A U-rib welding trolley for bridge steel structures

Abstract

The present invention discloses a U-rib welding trolley for bridge steel structures, which includes a trolley traveling mechanism, a trolley positioning mechanism, a mechanism transition connecting plate, a wire feeding mechanism, a gun head mechanism, a gun head adjusting connecting column, a video monitoring system, a flexible connection mechanism, and a trolley traveling and welding control system. The combined welding trolley travels and welds on the U-ribs or in small-space ribs. The trolley traveling and welding are controlled by the trolley traveling and welding system, and the real-time welding process is monitored through the video monitoring system, thereby completing the entire internal welding process. The present invention solves the problem that internal welding operations cannot be carried out manually on steel structures, U-ribs of bridge decks or in small spaces. It can be applied to steel structures, U-ribs of bridge decks or welding in small spaces where manual operation is impossible, and can realize automated space welding, with convenient use and relatively low cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding construction, and particularly relates to a U-rib welding trolley for bridge steel structures. Background Art

[0002] The bridge deck generally adopts an orthotropic steel deck full-welded structure. The deck usually uses U-shaped ribs as longitudinal stiffeners. The thickness of the U-ribs is generally 8 mm, and it is generally required that the penetration rate of one side (outer side) reaches more than 80%. In recent years, with the development of steel bridge technology and the research on the diseases of traditional single-sided welded U-ribs, in order to ensure that the connecting weld between the U-rib and the steel deck has better fatigue resistance, the concept of double-sided welding of U-ribs has been proposed, that is, it is required to weld inside the U-ribs. At present, the domestic and even global U-rib internal welding technology is still immature, the processing fee is extremely expensive, and the equipment purchase requires tens of millions of yuan. The equipment is a gantry welding, with a large group, occupying a large amount of site space, and is a fixed large-scale submerged arc welding equipment, which increases the cost for small-batch production. In order to improve the fatigue life of the U-rib weld and reduce the risk of weld failure and instability, more steel bridge deck systems will adopt the U-rib internal welding technology. The internal space of the U-rib is extremely narrow, and manual or other large welding equipment cannot reach it. This welding trolley can complete the internal welding. At present, the technology and equipment that can achieve U-rib internal welding in the world are extremely scarce. The U-rib internal welding trolley equipment has important application prospects and practical promotion significance. Summary of the Invention

[0003] The present invention aims at the deficiencies of the existing technology and provides a U-rib welding trolley for bridge steel structures.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A U-rib welding trolley for bridge steel structures includes a trolley traveling mechanism, a trolley positioning mechanism, a mechanism transition connecting plate, a wire feeding mechanism, a gun head mechanism, a gun head adjusting connecting column, a video monitoring system, a flexible connection mechanism, and a trolley traveling and welding control system, etc. The trolley positioning mechanism is installed on the trolley traveling mechanism, the video monitoring system is installed on the mechanism transition connecting plate, and the trolley traveling control system is used to control the traveling power servo motor, and the welding control system is beneficial to the docking of the welding torch chuck and the welding torch head.

[0006] Among them, the trolley traveling mechanism, the trolley positioning mechanism, the mechanism transition connecting plate, the wire feeding mechanism, the gun head mechanism, the gun head adjusting connecting column, the video monitoring system, and the flexible connection mechanism are combined to form a welding trolley to travel and weld on the U-rib or in a small space rib. The trolley traveling and welding system controls the traveling and welding, and the video monitoring system monitors the welding process in real time, so as to complete the entire internal welding process.

[0007] As a preferred technical solution, the traveling power servo motor is inherently provided on the trolley traveling mechanism.

[0008] As a preferred technical solution, the sliding positioning rods of the trolley positioning mechanism are fixed at both ends on the traveling mechanism.

[0009] As a preferred technical solution, the transition connecting plate is installed on the traveling mechanism.

[0010] As a preferred technical solution, the wire feeding mechanism is fixed on the transition connecting plate and on the right side of the traveling power servo motor.

[0011] As a preferred technical solution, the wire feeding mechanism includes a wire feeding servo motor, a wire feeding wheel set, a wire feeding wheel set pressing device, a current wire connecting seat, and a third bolt.

[0012] As a preferred technical solution, the monitoring camera is fixed on the transition connecting plate and on the left side of the traveling power servo motor.

[0013] As a preferred technical solution, the flexible connection mechanism includes a current wire, an insulating gasket, a nut, a current bridge connection wire, a fifth bolt, a wire feeding hose, a gas supply hose interface, a gas supply bridge connection hose, a welding gun head, and a pressing sleeve.

[0014] As a preferred technical solution, the current wire is connected to the current wire connecting seat.

[0015] As a preferred technical solution, the welding gun head is inherently provided on the welding gun chuck.

[0016] As a preferred technical solution, the gun head height adjustment connection column is fixed on the transition connecting plate and on the left side of the monitoring camera.

[0017] As a preferred technical solution, the gun head adjustment servo motor chuck is fixed on the gun head height adjustment connection column.

[0018] As a preferred technical solution, the gun head adjustment servo motor is fixed on the gun head adjustment servo motor chuck.

[0019] As a preferred technical solution, the monitoring display screen is connected to the monitoring camera, the trolley traveling system control panel controls the traveling power servo motor, and the welding control panel controls the wire feeding servo motor and the gun head adjustment servo motor.

[0020] The beneficial effects are as follows:

[0021] The present invention solves the problem that internal welding operations cannot be carried out manually for steel structures, U ribs of bridge decks, or small spaces.

[0022] The present invention improves a U-rib welding device for bridge steel structures, which is applied to steel structures, U-ribs of bridge decks or small spaces where manual welding is impossible, enabling an automated space, being convenient to use and operate, having a relatively low cost, and being suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 It is a schematic diagram of a U-rib welding trolley for a bridge steel structure in an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the trolley traveling mechanism in an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the trolley positioning mechanism in an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the mechanism transition connecting plate in an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the wire feeding mechanism in an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the gun head mechanism in an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the gun head adjusting connecting column in an embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of the video monitoring system in an embodiment of the present invention;

[0032] Figure 9 It is a schematic diagram of the flexible connection mechanism in an embodiment of the present invention

[0033] Figure 10 It is a schematic diagram of the trolley traveling and welding control system in an embodiment of the present invention.

[0034] In the figure, 1 is a walking power servo motor, 2 is a walking mechanism; 3 is a sliding positioning rod of the trolley positioning mechanism, 4 is a first bolt; 5 is a transition connecting plate, 6 is a second bolt; 7 is a wire feeding servo motor, 8 is a wire feeding wheel set, 9 is a wire feeding wheel set pressing device, 10 is a current wire connecting seat, 11 is a third bolt; 12 is a gun head adjustment servo motor, 13 is a welding gun chuck, 14 is a gun head adjustment servo motor fixed chuck; 15 is a gun head height adjustment connecting column, 16 is a fourth bolt; 17 is a monitoring camera, 18 is a fifth bolt, 19 is a monitoring display screen; 20 is a current wire, 21 is an insulating gasket, 22 is a nut, 23 is a current connecting wire, 24 is a sixth bolt, 25 is a wire feeding hose, 26 is an air supply hose interface, 27 is an air supply connecting hose, 28 is a welding gun head, 29 is a pressing sleeve, 30 is a trolley walking system control panel, 31 is a welding system control panel. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the invention.

[0039] Now, the present invention will be further described with reference to the accompanying drawings of the specification.

[0040] Embodiment:

[0041] Please refer to Figure 1-10As shown in the figure, a U-rib welding trolley for bridge steel structures includes a trolley traveling mechanism, a trolley positioning mechanism, a mechanism transition connecting plate, a wire feeding mechanism, a gun head mechanism, a gun head adjusting connecting column, a video monitoring system, a flexible connection mechanism, and a trolley traveling and welding control system, etc. The trolley positioning mechanism is installed on the trolley traveling mechanism, the video monitoring system is installed on the mechanism transition connecting plate, and the trolley traveling control system is used to control the traveling power servo motor, and the welding control system facilitates the docking of the welding torch chuck and the welding gun head.

[0042] Among them, the trolley traveling mechanism, the trolley positioning mechanism, the mechanism transition connecting plate, the wire feeding mechanism, the gun head mechanism, the gun head adjusting connecting column, the video monitoring system, and the flexible connection mechanism are combined to form a welding trolley to travel and weld on the U-rib or in a small space rib. The trolley traveling and welding system controls the traveling and welding, and the video monitoring system monitors the welding process in real time, so as to complete the entire internal welding process.

[0043] During specific implementation, refer to Figure 1 First, place the welding trolley inside the U-rib. The traveling power servo motor 1 is inherent in the trolley traveling mechanism and is a combined body.

[0044] Then refer to Figures 2-4 Adjust the trolley positioning mechanism for positioning. The trolley positioning mechanism includes a traveling power servo motor 1 and a traveling mechanism 2; the trolley positioning mechanism includes a sliding positioning rod 3 and a first bolt 4. The sliding positioning rod 3 of the trolley positioning mechanism is connected to both ends of the traveling mechanism 2 through the first bolt 4. The transition connecting plate 5 is fixed above the variable-speed traveling mechanism 2 through a second bolt 6. The wire feeding mechanism is fixed above the transition connecting plate 5 through a third bolt and is on the right side of the traveling servo motor 1. The wire feeding mechanism includes a wire feeding servo motor 7, a wire feeding wheel set 8, a wire feeding wheel set pressing device 9, a current wire connecting seat 10, and a third bolt 11. The wire feeding servo motor 7 is used to drive the wire feeding wheel set 8, and the wire feeding wheel set pressing device 9 is used for the transmission cooperation with the wire feeding wheel set 8.

[0045] Secondly, refer to Figures 5-8 Through the monitoring display screen 19, the monitoring display screen 19 is connected to the monitoring camera 17. The monitoring camera 17 is fixed above the transition connecting plate 5 through a fourth bolt 16 and is on the left side of the traveling servo motor 1. Then, the gun head adjusting servo motor 12 and the welding torch chuck 13 are adjusted by the trolley control system control panel 30 for the welding alignment of the welding gun head 28. The gun head height adjusting connecting column 15 is fixed above the transition connecting plate 5 through a fourth bolt 16 and is on the left side of the monitoring camera 17. The gun head adjusting servo motor fixed chuck 14 is fastened on the gun head height adjusting connecting column 15 and is adjustable. The gun head adjusting servo motor 12 is fixed on the gun head adjusting servo motor fixed chuck 14.

[0046] Specific reference Figure 9 Figure 9 The flexible connection mechanism includes a current wire 20, an insulating gasket 21, a nut 22, a current connection wire 23, a sixth bolt 24, a wire feeding hose 25, a gas feeding hose interface 26, a gas feeding connection hose 27, a welding gun head 28, and a compression sleeve 29. The current wire is connected to the current wire connection seat 10 through the insulating gasket 21 and the nut 22. One end of the current wire connection seat 10 is fixedly provided with a welding host joint, and the other end is fixedly provided with a wire feeding hose 25. The wire feeding hose 25 and the welding host are respectively fixedly provided with gas feeding hose interfaces 26. The gas feeding connection hose 27 is used to connect the gas feeding hose interfaces 26 at both ends. The current connection wire 23 is used to connect the current wire 20 and the current wire connection seat 10. The welding gun head 28 is fixed on the welding gun chuck 13, and the compression sleeve 29 is fixedly provided above it.

[0047] Then refer to Figure 10 Figure 10 The trolley is controlled to perform internal welding of the U-rib through the trolley traveling system control panel 30 and the welding system control panel 31. The traveling power servo motor 1 receives the control instruction of the trolley traveling system panel 30, and the wire feeding servo motor 7 and the gun head adjustment servo motor receive the control instruction of the welding system control panel 31.

[0048] Finally, the welding is monitored through the monitoring display screen of the video monitoring system to complete the entire internal welding process.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A U-rib welding trolley for bridge steel structures, characterized in that: It includes a trolley traveling mechanism, a trolley positioning mechanism, a mechanism transition connecting plate, a wire feeding mechanism, a gun head mechanism, a gun head adjusting connecting column, a video monitoring system, a flexible connecting mechanism, and a trolley traveling and welding control system; The trolley travel mechanism comprises a travel power servo motor (1) and a travel mechanism (2); the travel mechanism (2) has a built-in trolley positioning mechanism, the trolley positioning mechanism comprises a trolley positioning mechanism sliding positioning rod (3) and a first bolt (4), the trolley positioning mechanism sliding positioning rod (3) is connected to two ends of the travel mechanism (2) through the first bolt (4); the travel mechanism (2) has a built-in mechanism transition connecting plate, the mechanism transition connecting plate comprises a transition connecting plate (5) and a second bolt (6), the transition connecting plate (5) is fixed above the speed change travel mechanism (2); the transition connecting plate (5) is fixed with a wire feeding mechanism and is connected to the travel power servo motor (1) by the wire feeding mechanism. On the right side, the wire feeding mechanism includes a wire feeding servo motor (7), a wire feeding wheel assembly (8), a wire feeding wheel assembly clamping device (9), a current wire connection seat (10), and a third bolt (11), wherein the wire feeding servo motor (7) is used to drive the wire feeding wheel assembly (8), and the wire feeding wheel assembly clamping device (9) is used to cooperate with the wire feeding wheel assembly (8) in transmission; a gun head adjustment connecting column is installed on the leftmost end of the transition connecting plate (5), and the gun head adjustment connecting column includes a gun head height adjustment connecting column (15) and a fourth bolt (16); the gun head height adjustment connecting column (15) has an inherent gun head mechanism, and the gun head mechanism includes a gun head adjustment servo motor (12), a welding gun clamp (13) , a gun head adjustment servo motor fixing clamp (14), the gun head adjustment servo motor (12) is fixed on the gun head adjustment servo motor fixing clamp (14), the gun head adjustment servo motor (12) and the welding gun clamp (13) are used for welding alignment of the welding gun head (28); the transition connecting plate (5) has an inherent video monitoring system and is close to the left side of the walking power servo motor (1), the video monitoring system includes a monitoring camera (17), a fifth bolt (18), and a monitoring display screen (19); its soft connection mechanism includes a current conductor (20), an insulating gasket (21), a nut (22), a current connecting conductor (23), and a sixth bolt (24) A wire feeding hose (25), an air feeding hose interface (26), an air feeding connecting hose (27), a welding gun head (28), and a compression sleeve (29); one end of the current wire connecting seat (10) has a welding host connector, and the other end has a wire feeding hose (25); the wire feeding hose (25) and the welding host have air feeding hose interfaces (26) respectively; the air feeding connecting hose (27) is used to connect the air feeding hose interfaces (26) at both ends; the current connecting wire (23) is used to connect the current wire (20) and the current wire connecting seat (10); the welding gun head (28) is fixed on the welding gun clamp (13) and has the compression sleeve (29) on the top;The trolley traveling and welding control system includes a monitoring display screen (19), a trolley traveling system control panel (30), and a welding system control panel (31). The traveling power servo motor (1) receives control instructions from the trolley traveling system control panel (30), and the wire feeding servo motor (7) and the gun head adjustment servo motor receive control instructions from the welding system control panel (31). The traveling mechanism (2) is inherently equipped with a traveling power servo motor (1) and is a combined body; The sliding positioning rod (3) of the trolley positioning mechanism is connected to both ends of the traveling mechanism (2) by bolts (4).

2. The welding trolley for U-rib of bridge steel structure according to claim 1, characterized in that: The transition connecting plate (5) is fixed above the variable-speed traveling mechanism (2) by bolts (6).

3. The welding trolley for U-rib of bridge steel structure according to claim 1, characterized in that: The wire feeding mechanism is fixed above the transition connecting plate (5) by bolts (11).

4. The welding trolley for U-rib of bridge steel structure according to claim 1, characterized in that: The gun head mechanism is fastened to the gun head height adjusting connecting column (15) by the gun head adjusting servo motor fixing chuck (14) and is adjustable.

5. The bridge steel structure U-rib welding trolley according to claim 1, characterized in that: The gun head height adjusting connecting column (15) is fixed above the transition connecting plate (5) by bolts (16).

6. The welding trolley for U-rib of bridge steel structure according to claim 1, characterized in that: The monitoring camera (17) is fixed above the transition connecting plate (5) by bolts (18).

7. The welding trolley for U-rib of bridge steel structure according to claim 1, characterized in that: The current wire (20) is connected to the current wire connecting seat (10) through an insulating gasket (21) and a nut (22), and the welding gun head (28) is stuck on the welding gun chuck (13).

8. The welding trolley for U ribs of bridge steel structure according to claim 1, characterized in that: The monitoring display screen (19) is connected to the monitoring camera (17), the trolley traveling system control panel (30) commands the traveling power servo motor (1), and the welding control system panel (31) commands the wire feeding servo motor (7) and the gun head adjusting servo motor (12).

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