U-rib repairing equipment for in-service bridge

Abstract

The invention belongs to the technical field of in-service bridge repair, and provides in-service bridge U-rib repair equipment which comprises a walking guide unit, a U-rib repair unit, a U-rib repair unit and a U-rib repair unit. Welding guns are installed at the tail ends of the welding gun position adjusting units respectively, and the welding gun position adjusting units are used for adjusting the positions of the welding guns in the plane perpendicular to the length direction of the U rib; the two welding gun position adjusting units are arranged in the left-right direction of the vehicle body, each welding gun points to a welding seam on the same side as the welding gun, and the two welding gun position adjusting units are each provided with one welding gun position guiding unit. The welding gun guide unit can directly guide the welding gun position adjusting unit, so that the welding guns on the two sides are aligned to the welding seam positions on the same side in real time, the situation that a U rib of an in-service bridge deforms can be dealt with, and therefore the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of repairing in-service bridges, and in particular to a U-rib repairing device for in-service bridges. Background Art

[0002] Steel box girders are an important part of the load-bearing structure of bridges. Steel box girders are generally orthotropic steel bridge decks, which are mainly used to provide support to prevent bridge deformation. Steel box girders generally include structures such as top plates and bottom plates, and the top plates and bottom plates are generally welded by U ribs and steel plates.

[0003] The inner corners of the U-ribs of many bridges in service are not welded to the steel plates. Currently, when repairing these bridges in service, internal welding vehicles are used to weld the inner corners of the U-ribs using internal welding technology. Double-sided welding can greatly improve the fatigue life of the welded joints between the U-ribs and the steel plates.

[0004] However, inspections of U-ribs on in-service bridges after repair have found that the quality of the U-rib inner corner welds in some locations does not meet the requirements. Summary of the invention

[0005] The purpose of the present invention is to improve the quality of the U-rib inner corner weld and to provide a U-rib repair device for an in-service bridge.

[0006] The present invention is achieved through the following technical solutions.

[0007] U-rib repair equipment for in-service bridges, including:

[0008] A vehicle body, used for traveling inside the U-rib along the length direction of the U-rib;

[0009] A travel guide unit, installed on the vehicle body, for guiding the vehicle body;

[0010] A welding gun position adjustment unit, at each end of which a welding gun is installed, and the welding gun position adjustment unit is used to adjust the position of the welding gun in a plane perpendicular to the length direction of the U-rib; two welding gun position adjustment units are arranged in the left and right directions of the vehicle body, and each welding gun is respectively pointed to the weld on the same side thereof;

[0011] A welding gun position guiding unit comprises an upper guide wheel and a side guide wheel, wherein the upper guide wheel and the side guide wheel are freely rotatable along their respective wheel axles, the wheel axles of the upper guide wheel and the side guide wheel are connected to the welding gun position adjusting unit, the wheel circumference of the upper guide wheel is pressed against the upper wall of the U-rib, and the wheel circumference of the side guide wheel is pressed against the side wall of the U-rib; one welding gun position guiding unit is configured for each of the two welding gun position adjusting units, and the side guide wheel on each welding gun position adjusting unit is pressed against the side wall on the same side thereof.

[0012] In one embodiment, the welding gun position adjustment unit comprises:

[0013] A first linear output device connected to the vehicle body, wherein the linear displacement output by the first linear output device is located in a plane perpendicular to the length direction of the U rib;

[0014] The second linear output device is connected to the end of the first linear output device, and the linear displacement output by the second linear output device is located in a plane perpendicular to the length direction of the U rib and has a different direction from the linear displacement output by the first linear output device.

[0015] In one embodiment, the axle of the upper guide wheel is connected to the output end of the first linear output device;

[0016] The wheel axle of the side guide wheel is connected to the output end of the second linear output device;

[0017] The first linear output device and the second linear output device are pneumatic cylinders or hydraulic cylinders, and the displacement changes of the output ends of the first linear output device and the second linear output device make the loads they receive constant.

[0018] In one embodiment, relative to the vertical direction, the cylinder of the first linear output device is tilted outward;

[0019] The cylinder body of the second linear output device is arranged horizontally.

[0020] In one embodiment, the output end of the first linear output device is connected to a transverse base, the bottom surface of the transverse base is perpendicular to the cylinder body of the first linear output device, and the top surface of the transverse base is horizontal;

[0021] A transverse sliding rail is arranged on the transverse sliding rail, a sliding block is arranged on the transverse sliding rail, a driving motor is installed on the sliding block, and an output end of the driving motor is connected to a welding gun.

[0022] In one embodiment, one of the cylinder bodies of the second linear output devices of the two welding gun position adjustment units is located above the transverse slide rail, and the other is located below the transverse slide rail.

[0023] In one embodiment, driven running wheels and two pairs of driving running wheels are arranged at the bottom of the vehicle body;

[0024] The driven walking wheel is located between the two first linear output devices;

[0025] The two pairs of driving wheels are arranged one in front and one behind.

[0026] In one embodiment, the travel guide unit comprises two travel guide wheels which are symmetrically arranged on the left and right sides, the wheel circumference of the travel guide wheel is pressed on the side wall of the U rib, and the wheel axle of the travel guide wheel is connected to the output end of the third linear output device;

[0027] The third linear output device adopts a pneumatic cylinder or a hydraulic cylinder, and the displacement change of the output end of the third linear output device makes the load it receives constant.

[0028] In one embodiment, a travel guide wheel bracket is connected to the wheel axle of each pair of the driving travel wheels, and the top end of the bracket is connected to the travel guide wheel.

[0029] In one embodiment, the walking guide device further comprises an upper top wheel, the wheel circumference of the upper top wheel is pressed on the upper wall of the U rib, and the wheel axle of the upper top wheel is connected to the output end of the fourth linear output device;

[0030] The fourth linear output device adopts a pneumatic cylinder or a hydraulic cylinder, and the displacement change of the output end of the fourth linear output device makes the load it receives constant;

[0031] The cylinder body of the fourth linear output device is installed on a top device base higher than the bottom of the vehicle body.

[0032] In one embodiment, a mounting plate is arranged behind the welding gun position adjustment unit, and a camera and a lighting lamp are arranged on the mounting plate, wherein the field of view of the camera and the lighting lamp includes the gun head of the welding gun.

[0033] The U-rib repair equipment for an in-service bridge in the technical solution provided by the present invention comprises: a walking guide unit, which is installed on the vehicle body to guide the vehicle body; a welding gun position adjustment unit, at the end of which each welding gun is installed, and the welding gun position adjustment unit is used to adjust the position of the welding gun in a plane perpendicular to the length direction of the U-rib; two welding gun position adjustment units are arranged in the left and right directions of the vehicle body, each welding gun points to the weld on the same side thereof, and a welding gun position guide unit is configured for each of the two welding gun position adjustment units. The welding gun guide unit can directly guide the welding gun position adjustment unit, so that the welding guns on both sides are aligned with the weld position on the same side thereof in real time, and can cope with the deformation of the U-rib of the in-service bridge, thereby improving the welding quality.

[0034] For further clarification, various aspects and advantages of the embodiments disclosed in the present invention will become apparent in the following description or can be learned through the practice of the embodiments disclosed in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention.

[0036] Figure 1 A schematic diagram of the structure of a U-rib repair device for an in-service bridge provided in Example 1;

[0037] Figure 2 A partial structural schematic diagram of a U-rib repair device for an in-service bridge provided in Example 1;

[0038] Figure 3 for Figure 2 A schematic diagram of the structure in another perspective;

[0039] Figure 4 for Figure 2 A schematic diagram of the structure in a top-down perspective;

[0040] Figure 5 This is a schematic structural diagram of the front portion of the U-rib repair equipment for an in-service bridge provided in Example 1. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] Example 1

[0043] Reference Figures 1 to 5 This embodiment provides a U-rib repair device for an in-service bridge, comprising:

[0044] A vehicle body 25, used for traveling inside the U-rib along the length direction of the U-rib;

[0045] A travel guide unit, installed on the vehicle body 25, for guiding the vehicle body 25;

[0046] A welding gun position adjustment unit, at each end of which a welding gun 1 is installed, and the welding gun position adjustment unit is used to adjust the position of the welding gun 1 in a plane perpendicular to the length direction of the U rib; two welding gun position adjustment units are arranged in the left and right directions of the vehicle body 25, and each welding gun 25 is respectively directed to the weld on the same side thereof;

[0047] A welding gun position guiding unit comprises an upper guide wheel 3 and a side guide wheel 2, wherein the upper guide wheel 3 and the side guide wheel 2 are free to rotate along their respective axles, and the axles of the upper guide wheel 3 and the side guide wheel 2 are connected to the welding gun position adjusting unit, and the circumferential surface of the upper guide wheel 3 is pressed against the upper wall of the U-rib, and the circumferential surface of the side guide wheel 2 is pressed against the side wall of the U-rib; one welding gun position guiding unit is configured for each of the two welding gun position adjusting units, and the side guide wheel on each welding gun position adjusting unit is pressed against the side wall on the same side thereof.

[0048] In this embodiment, the inner wall shape or direction of the U rib is sensed by the upper guide wheel 3 and the side guide wheel 2, and the inner wall shape or direction information of the U rib is transmitted to the welding gun position adjustment unit through the structural connection, so that the welding gun can be aligned with the weld.

[0049] Furthermore, the welding gun guide units on the left and right sides of the U-rib repair equipment for the in-service bridge provided in this embodiment adjust the position of the welding gun at the end of the welding gun position adjustment unit according to the weld position on the same side, so that the welding guns on both sides can be aligned with the weld position on the same side in real time, which can cope with the deformation of the U rib of the in-service bridge, thereby improving the welding quality.

[0050] In this embodiment, the welding gun position adjustment unit includes:

[0051] A first linear output device 14, connected to the vehicle body 25, wherein the linear displacement output by the first linear output device 14 is located in a plane perpendicular to the length direction of the U rib;

[0052] The second linear output device 18 is connected to the end of the first linear output device 14 . The linear displacement output by the second linear output device 18 is located in a plane perpendicular to the length direction of the U rib and has a different direction from that of the linear displacement output by the first linear output device 14 .

[0053] By setting the first linear output device 14 and the second linear output device 18, the displacements output by the two are both in a plane perpendicular to the length direction of the U rib and in different directions, so that the position of the welding gun 1 in the plane perpendicular to the length direction of the U rib can be adjusted to align the weld.

[0054] In this embodiment, the second linear output device 18 is arranged at the end of the first linear output device 14. The adjustment of the second linear output device 18 is not affected by the first linear output device 14, and the adjustment is smoother.

[0055] In this embodiment, the axle of the upper guide wheel 3 is connected to the output end of the first linear output device 14 through the upper guide wheel bracket 22;

[0056] The wheel axle of the side guide wheel 2 is connected to the output end of the second linear output device 18 through the side guide wheel bracket 21;

[0057] The position of the upper guide wheel 3 directly affects the position of the output end of the first linear output device 14, and the position of the side guide wheel 2 directly affects the position of the output end of the second linear output device 18, thereby changing the position of the welding gun. Due to the reinforcement of the old bridge U rib, there may be deformation of the U rib. The side guide wheel 2 can be adjusted in real time and is not affected by the upper guide wheel 3. The adjustment is smoother, so that the welding gun 1 is aligned with the weld position on the same side in real time; the welding gun position guide unit directly guides the welding gun part, which is more accurate.

[0058] The first linear output device 14 and the second linear output device 18 are pneumatic cylinders or hydraulic cylinders. The displacement changes of the output ends of the first linear output device 14 and the second linear output device 18 make the loads they receive constant, thereby achieving guidance.

[0059] In this embodiment, relative to the vertical direction, the cylinder of the first linear output device 14 is tilted outward;

[0060] The cylinder of the second linear output device 14 is arranged horizontally.

[0061] Specifically, a lifting base 17 can be set and fixed on the bottom plate of the vehicle body 25. The upper surface of the lifting base 17 is designed with two symmetrical inclined surfaces, two of which are placed and fixed on the inclined surfaces. The connection surfaces of the two transverse bases 16 and the cylinder output ends of the first linear output device 14 are provided with inclined surfaces, which have the same inclination angle as the upper surface of the lifting base 17, so that the bottom surface of the transverse base 16 is perpendicular to the cylinder of the first linear output device 14, and the upper surface of the transverse base 16 is horizontal. The cylinder of the first linear output device 14 is placed at an angle, and the transverse base 16 will move in both upward and outward directions during the lifting process, which can reduce the travel required by the transverse slide rail 15 provided on the transverse base. A slider is provided on the transverse slide rail 15, and a drive motor 4 is installed on the slider. The output end of the drive motor 4 is connected to the welding gun 1.

[0062] During the repair operation, the output end of the driving motor 4 drives the welding gun 1 to swing within a preset angle and at a preset speed to improve the welding quality.

[0063] In this embodiment, one of the cylinders of the second linear output devices 18 of the two welding gun position adjustment units is located above the transverse slide rail 15, and the other is located below the transverse slide rail 15, so as to save space. When the length of the vehicle body 25 is shortened and repaired, the length of the opening on the U-rib needs to be shortened accordingly, so as not to reduce the strength and stiffness of the bridge in service as much as possible.

[0064] In this embodiment, the cylinder bodies of the two second linear output devices 18 are respectively connected to the transverse driving cylinder fixed bracket 19, and the cylinder rods of the two second linear output devices 18 are connected to the transverse driving cylinder telescopic shaft bracket 20. The transverse driving cylinder fixed bracket 19 is fixed on the transverse base 16, and the transverse driving cylinder telescopic shaft bracket 20 is fixed on the base for installing the driving motor 4. The second linear output device 18 can be used to make the driving motor 4 and the welding gun 1 move laterally on the transverse slide rail 15.

[0065] In this embodiment, the bottom of the vehicle body 25 is provided with driven running wheels 13 and two pairs of driving running wheels 9;

[0066] The driven walking wheel 13 is located between the two first linear output devices 14 to increase walking stability;

[0067] The two pairs of driving wheels 9 are arranged one in front and one behind.

[0068] The two pairs of driving wheels 9 are connected to the output shaft of the servo motor through a double-axis reducer. Compared with a chain transmission between the motor and the driving wheels, the vehicle body 25 runs more stably.

[0069] In this embodiment, the walking guide unit includes two walking guide wheels 12 that are symmetrically arranged on the left and right, the wheel circumference of the walking guide wheel 12 is pressed against the side wall of the U rib, and the wheel axle of the walking guide wheel 12 is connected to the output end of the third linear output device;

[0070] The third linear output device adopts a cylinder or a hydraulic cylinder, and the displacement change of the output end of the third linear output device makes the load it receives constant, thereby achieving guidance.

[0071] In addition, in this embodiment, the two travel guide wheels 12 are installed below the second linear output device 18 to shorten the length of the vehicle body 25 .

[0072] The walking guide unit may be provided in plurality, so that the walking process of the vehicle body 25 is more stable, thereby improving the welding quality.

[0073] Furthermore, the wheel axles of each pair of the driving wheels 9 are connected to the travel guide wheel bracket 8, and the top of the travel guide wheel bracket 8 is connected to the travel guide wheel 5. The middle of the travel guide wheel bracket 8 is empty, and the drive motor and wiring are placed in the internal space, which reduces space waste and shortens the length of the vehicle body 25. When the length of the vehicle body 25 is shortened, the length of the opening on the U rib needs to be shortened accordingly during repair, so as not to reduce the strength and stiffness of the bridge in service as much as possible.

[0074] In this embodiment, the driving wheel 9 ( Figure 1A walking guide device whose height is lower than the top of the bracket 8 is arranged between the left side of the bracket 8 and the driven walking wheel 13.

[0075] The travel guide devices are arranged at different heights, so that the vehicle body 25 can travel more smoothly, thereby improving the welding quality.

[0076] In this embodiment, the walking guide device further includes an upper top wheel 7, the wheel circumference of the upper top wheel 7 is pressed on the upper wall of the U rib, and the wheel axle of the upper top wheel 7 is connected to the output end of the fourth linear output device 10 through a connecting member 6;

[0077] The fourth linear output device 10 is a pneumatic cylinder or a hydraulic cylinder. The displacement change of the output end of the fourth linear output device 11 makes the load it receives constant, thereby achieving guidance.

[0078] The cylinder of the fourth linear output device 10 is installed on the upper device base 11 which is higher than the bottom of the vehicle body. The upper device base 11 is designed as a hollow structure. Increasing the height of the cylinder of the fourth linear output device 10 can reduce the stroke of the cylinder. At the same time, the internal space is used to place the drive motor and the wiring, which reduces space waste and shortens the length of the vehicle body 25. When the length of the vehicle body 25 is shortened, the length of the opening on the U rib needs to be shortened accordingly during repair, so as not to reduce the strength and stiffness of the bridge in service as much as possible.

[0079] In this embodiment, a mounting plate is provided behind the welding gun position adjustment unit, and a camera 23 and a lighting lamp 24 are provided on the mounting plate, and the field of view of the camera 23 and the lighting lamp 24 includes the head of the welding gun 1. The lighting lamp 24 and the camera 23 are fixedly placed, and the welding position can be observed at all times, which is convenient for monitoring the welding quality.

[0080] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. U-rib repair equipment for in-service bridges, characterized in that: Include: A vehicle body, used for traveling inside the U-rib along the length direction of the U-rib; A travel guide unit, installed on the vehicle body, for guiding the vehicle body; A welding gun position adjustment unit, at each end of which a welding gun is installed, and the welding gun position adjustment unit is used to adjust the position of the welding gun in a plane perpendicular to the length direction of the U-rib; two welding gun position adjustment units are arranged in the left and right directions of the vehicle body, and each welding gun is respectively pointed to the weld on the same side thereof; A welding gun position guiding unit comprises an upper guide wheel and a side guide wheel, wherein the upper guide wheel and the side guide wheel are freely rotatable along their respective wheel axles, the wheel axles of the upper guide wheel and the side guide wheel are connected to the welding gun position adjusting unit, the wheel circumference of the upper guide wheel is pressed against the upper wall of the U-rib, and the wheel circumference of the side guide wheel is pressed against the side wall of the U-rib; one welding gun position guiding unit is configured for each of the two welding gun position adjusting units, and the side guide wheel on each welding gun position adjusting unit is pressed against the side wall on the same side thereof.

2. The U-rib repairing device for an in-service bridge according to claim 1 is characterized in that: The welding gun position adjustment unit comprises: A first linear output device connected to the vehicle body, wherein the linear displacement output by the first linear output device is located in a plane perpendicular to the length direction of the U-rib; The second linear output device is connected to the end of the first linear output device, and the linear displacement output by the second linear output device is located in a plane perpendicular to the length direction of the U rib and has a different direction from the linear displacement output by the first linear output device.

3. The U-rib repairing device for an in-service bridge according to claim 2 is characterized in that: The axle of the upper guide wheel is connected to the output end of the first linear output device; The wheel axle of the side guide wheel is connected to the output end of the second linear output device; The first linear output device and the second linear output device are pneumatic cylinders or hydraulic cylinders, and the displacement changes of the output ends of the first linear output device and the second linear output device make the loads they receive constant.

4. The U-rib repairing device for an in-service bridge according to claim 3 is characterized in that: With respect to the vertical direction, the cylinder of the first linear output device is tilted outward; The cylinder body of the second linear output device is arranged horizontally.

5. The U-rib repairing device for an in-service bridge according to claim 4, characterized in that: The output end of the first linear output device is connected to a transverse base, the bottom surface of the transverse base is perpendicular to the cylinder body of the first linear output device, and the top surface of the transverse base is horizontal; A transverse sliding rail is arranged on the transverse sliding rail, a sliding block is arranged on the transverse sliding rail, a driving motor is installed on the sliding block, and an output end of the driving motor is connected to a welding gun.

6. The U-rib repairing device for an in-service bridge according to claim 5, characterized in that: One of the cylinder bodies of the second linear output devices of the two welding gun position adjustment units is located above the transverse slide rail, and the other is located below the transverse slide rail.

7. The U-rib repairing device for an in-service bridge according to claim 2, characterized in that: The bottom of the vehicle body is provided with driven running wheels and two pairs of driving running wheels; The driven walking wheel is located between the two first linear output devices; The two pairs of driving wheels are arranged one in front and one behind.

8. The U-rib repairing device for an in-service bridge according to claim 7, characterized in that: The walking guide unit comprises two walking guide wheels which are symmetrically arranged on the left and right sides, the wheel circumference of the walking guide wheels is pressed on the side wall of the U rib, and the wheel axle of the walking guide wheels is connected to the output end of the third linear output device; The third linear output device adopts a pneumatic cylinder or a hydraulic cylinder, and the displacement change of the output end of the third linear output device makes the load it receives constant.

9. The U-rib repairing device for an in-service bridge according to claim 8, characterized in that: The wheel axles of each pair of driving walking wheels are connected to walking guide wheel brackets, and the top ends of the brackets are connected to the walking guide wheels.

10. The U-rib repairing device for an in-service bridge according to claim 8, characterized in that: The walking guide device further comprises an upper top wheel, the wheel circumference of which is pressed against the upper wall of the U-rib, and the wheel axle of which is connected to the output end of the fourth linear output device; The fourth linear output device adopts a pneumatic cylinder or a hydraulic cylinder, and the displacement change of the output end of the fourth linear output device makes the load it receives constant; The cylinder body of the fourth linear output device is installed on a top device base higher than the bottom of the vehicle body.

11. The U-rib repairing device for an in-service bridge according to claim 1, characterized in that: A mounting plate is arranged behind the welding gun position adjustment unit, and a camera and an illuminator are arranged on the mounting plate. The field of view of the camera and the illuminator includes the gun head of the welding gun.

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