Welding reinforcement structure for local fracture in cross beam of heavy manipulator

Abstract

The utility model discloses a heavy manipulator cross beam internal local fracture welding reinforcement structure, which comprises reinforcement main rib plates, a first reinforcement rib plate and a second reinforcement rib plate, the reinforcement main rib plates, the first reinforcement rib plate and the second reinforcement rib plate are arranged to be flat plate pieces, and the two reinforcement main rib plates are symmetrically arranged on the two sides of a local crack. The reinforcing main rib plates are parallel and fixedly arranged on the upper cover plate, the first reinforcing rib plate and the second reinforcing rib plate are fixedly arranged on the upper cover plate and arranged on the two sides of the reinforcing main rib plates respectively, and the second reinforcing rib plate is arranged between the two reinforcing main rib plates and fixedly connected with the two reinforcing main rib plates. The first reinforcing rib plate is fixedly connected with a reinforcing main rib plate and the upper cover plate at the same time; according to the utility model, online welding repair can be carried out on upper cover plate fractures on the heavy manipulator box body cross beam, the maintenance time is saved, the maintenance cost is reduced, the shutdown loss is reduced, and a guarantee is provided for reasonable production.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy-duty manipulator crossbeam repair, in particular to a local fracture welding reinforcement structure in a heavy-duty manipulator crossbeam. Background Art

[0002] In the current wheel production line, the core rolling process of the wheel is: heating steel billets, overall surface dephosphorization, 90MN wheel preforming, rolling by rolling mill, clamping by mobile manipulators, and positioning and forming by 50MN. The fixed heavy manipulator crossbeam spans between the 90MN hydraulic press, vertical rolling mill, and 50MN hydraulic press. The upper and lower tracks are installed on the heavy manipulator crossbeam. The heavy manipulator and crossbeam of the overall equipment are horizontally installed at the designated position by the structural member bracket. During normal production, the two heavy manipulators suspended on the large structural member box crossbeam constantly clamp the semi-finished wheels back and forth along the upper and lower tracks to accurately position and transport them to various designated rolling mills.

[0003] Due to design defects, long-term fatigue cycle operation and overloaded wheel production, the upper cover plate on the heavy manipulator crossbeam is prone to fracture. If not handled in time, it may directly lead to crack expansion, damage to equipment and threaten personal safety; in the absence of spare parts, it needs to be transported to the manufacturer for repair, and the disassembly and lifting transportation time is long. At the same time, customizing new spare parts not only takes a long time but also has high costs, which cannot guarantee the normal production.

[0004] In view of the above-mentioned defects, the inventor of the present invention finally obtained the present invention after a long period of research and practice. Utility Model Content

[0005] In order to solve the above technical defects, the technical solution adopted by the utility model is to provide a local fracture welding reinforcement structure in a heavy-duty manipulator crossbeam, which is used to reinforce the local cracks on the heavy-duty manipulator crossbeam, the heavy-duty manipulator crossbeam comprises an upper cover plate and two side cover plates, the two side cover plates are respectively arranged on both sides of the upper cover plate, and the local cracks are arranged on the upper cover plate; the local fracture welding reinforcement structure in the heavy-duty manipulator crossbeam comprises a reinforcing main rib plate, a first reinforcing rib plate and a second reinforcing rib plate, the reinforcing main rib plate, the first reinforcing rib plate and the second reinforcing rib plate are all arranged as flat plate parts, the two reinforcing main rib plates are symmetrically arranged on both sides of the local crack, the reinforcing main rib plates are parallel and fixedly arranged on the upper cover plate, the first reinforcing rib plate and the second reinforcing rib plate are fixedly arranged on the upper cover plate and the first reinforcing rib plate and the second reinforcing rib plate are respectively arranged on both sides of the reinforcing main rib plate, the second reinforcing rib plate is arranged between the two reinforcing main rib plates, and is fixedly connected to the two reinforcing main rib plates, and the first reinforcing rib plate is fixedly connected to one reinforcing main rib plate and the upper cover plate at the same time.

[0006] Preferably, the first reinforcing rib plate is configured as a right-angled triangle plate, and two right-angled sides of the first reinforcing rib plate are respectively fixedly connected to one of the reinforcing main rib plates and the upper cover plate.

[0007] Preferably, the second reinforcing rib plate is configured as a rectangular plate, two parallel sides of the second reinforcing rib plate are respectively fixedly connected to the two main reinforcing rib plates, and the bottom edge of the second reinforcing rib plate is fixedly connected to the upper cover plate.

[0008] Preferably, a plurality of the first reinforcing rib plates are equidistantly arranged along the extension direction of the reinforcing main rib plate, and a plurality of the second reinforcing rib plates are equidistantly arranged along the extension direction of the reinforcing main rib plate.

[0009] Preferably, the first reinforcing rib plates and the second reinforcing rib plates on both sides of the same reinforcing main rib plate are arranged alternately.

[0010] Preferably, the first reinforcing rib plate, the second reinforcing rib and the main reinforcing rib plate are all vertically fixed on the upper cover plate, and the first reinforcing rib plate and the second reinforcing rib are both vertically fixed to the main reinforcing rib plate.

[0011] Preferably, a top edge of the second reinforcing rib plate is provided with a concave weight-reducing groove.

[0012] Preferably, both ends of the reinforcing main rib plate are provided with reinforcing blocks, the width of the reinforcing blocks is greater than the width of the reinforcing main rib plate, and the two ends of the reinforcing main rib plate are fixedly connected to the two side cover plates respectively through the reinforcing blocks.

[0013] Preferably, the main reinforcing rib plate is cut and processed from a 40 mm steel plate, the first reinforcing rib plate is cut and processed from a 25 mm steel plate, and the second reinforcing rib plate is cut and processed from a 30 mm steel plate.

[0014] Preferably, the heavy manipulator crossbeam also includes a plurality of supporting ribs, each of which is arranged in a straight line, and the supporting ribs are configured as hollow rectangular plates. The upper cover plate and the two side cover plates are respectively fixed on the three straight edges of each of the supporting ribs, thereby forming a beam-like structure in which the two side cover plates are vertically fixed on both sides of the upper cover plate.

[0015] Compared with the prior art, the beneficial effect of the utility model is that the utility model can perform online welding repair on the broken upper cover plate on the cross beam of the heavy manipulator box, saving maintenance time, reducing maintenance costs, reducing downtime losses, and providing guarantee for reasonable production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural view of the crossbeam of the heavy manipulator;

[0017] Figure 2 It is a structural front view of the local fracture welding reinforcement structure in the crossbeam of the heavy manipulator;

[0018] Figure 3 It is a three-dimensional structural view of the local fracture welding reinforcement structure inside the heavy manipulator crossbeam.

[0019] The numbers in the figure represent:

[0020] 1- heavy manipulator crossbeam; 2- reinforcing main rib plate; 3- first reinforcing rib plate; 4- second reinforcing rib plate; 11- upper cover plate; 12- side cover plate; 13- local crack; 14- supporting rib plate; 21- reinforcing block; 41- weight reduction groove. DETAILED DESCRIPTION

[0021] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0022] Embodiment 1

[0023] like Figure 1 As shown, Figure 1 This is a structural view of the heavy manipulator crossbeam.

[0024] The local fracture welding reinforcement structure in the heavy manipulator cross beam of the utility model is used to reinforce the local cracks 13 on the heavy manipulator cross beam 1. The heavy manipulator cross beam 1 includes an upper cover plate 11 and two side cover plates 12. The two side cover plates 12 are respectively arranged on both sides of the upper cover plate 11, and the local cracks 13 are arranged on the upper cover plate 11.

[0025] The local fracture welding reinforcement structure in the heavy manipulator crossbeam includes a reinforcing main rib plate 2, a first reinforcing rib plate 3 and a second reinforcing rib plate 4. The reinforcing main rib plate 2, the first reinforcing rib plate 3 and the second reinforcing rib plate 4 are all configured as flat plate parts. The two reinforcing main rib plates 2 are symmetrically arranged on both sides of the local crack 13. The reinforcing main rib plates 2 are parallel and fixedly arranged on the upper cover plate 11. The first reinforcing rib plate 3 and the second reinforcing rib plate 4 are fixedly arranged on the upper cover plate 11 and the first reinforcing rib plate 3 and the second reinforcing rib plate 4 are respectively arranged on both sides of the reinforcing main rib plate 2. The second reinforcing rib plate 4 is arranged between the two reinforcing main rib plates 2 and is fixedly connected to the two reinforcing main rib plates 2. The first reinforcing rib plate 3 is fixedly connected to one reinforcing main rib plate 2 and the upper cover plate 11 at the same time.

[0026] Preferably, the first reinforcing rib plate 3 is configured as a right-angled triangle plate, and the two right-angled sides of the first reinforcing rib plate 3 are respectively fixedly connected to the reinforcing main rib plate 2 and the upper cover plate 11, to ensure that the connection state between the reinforcing main rib plate 2 and the upper cover plate 11 is stable.

[0027] The second reinforcing rib plate 4 is configured as a rectangular plate, and the two parallel sides of the second reinforcing rib plate 4 are respectively fixedly connected to the two reinforcing main rib plates 2, and the bottom edge of the second reinforcing rib plate 4 is fixedly connected to the upper cover plate 11 to improve the connection strength of the two reinforcing main rib plates 2. At the same time, the bottom edge of the second reinforcing rib plate 4 corresponds to the location of the local crack 13, and the connection between the bottom edge of the second reinforcing rib plate 4 and the upper cover plate 11 can further enhance the structural stability on both sides of the local crack 13.

[0028] Generally, a plurality of first reinforcing rib plates 3 are equidistantly arranged along the extension direction of the reinforcing main rib plate 2, and a plurality of second reinforcing rib plates 4 are equidistantly arranged along the extension direction of the reinforcing main rib plate 2, so as to ensure the supporting strength.

[0029] The first reinforcing rib plates 3 and the second reinforcing rib plates 4 on both sides of the same reinforcing main rib plate 2 can be arranged alternately to provide stable support for the reinforcing main rib plate 2 .

[0030] Preferably, the first reinforcing rib plate 3, the second reinforcing rib and the reinforcing main rib plate 2 are all vertically fixed on the upper cover plate 11, and the first reinforcing rib plate 3 and the second reinforcing rib are vertically fixed to the reinforcing main rib plate 2 to ensure the stability of the overall structure.

[0031] Preferably, the top edge of the second reinforcing rib plate 4 may be provided with a concave weight-reducing groove 41, so that the second reinforcing rib plate 4 is U-shaped, thereby ensuring that the overall width of the second reinforcing rib plate 4 can have a larger welding area with the reinforcing main rib plate 2, while reducing the weight of the second reinforcing rib plate 4, thereby avoiding the heavy manipulator beam 1 from increasing excessive weight after the local fracture welding reinforcement structure is set in the heavy manipulator beam.

[0032] Generally, reinforcement blocks 21 are provided at both ends of the reinforcing main rib plate 2, and the width of the reinforcement blocks is greater than the width of the reinforcing main rib plate 2. The two ends of the reinforcing main rib plate 2 are fixedly connected to the two side cover plates 12 through the reinforcement blocks 21, thereby avoiding the reinforcing main rib plate 2 from being set larger in size and increasing the welding area between the reinforcing main rib plate 2 and the heavy manipulator crossbeam 1 to improve the connection strength.

[0033] The reinforcing main rib plate 2 is cut and processed from a 40 mm steel plate, the first reinforcing rib plate 3 is cut and processed from a 25 mm steel plate, and the second reinforcing rib plate 4 is cut and processed from a 30 mm steel plate.

[0034] The heavy manipulator cross beam 1 also includes a plurality of support ribs 14, which are arranged in a straight line and are configured as hollow rectangular plates. The upper cover plate 11 and the two side covers 12 are respectively fixed on the three straight sides of each support rib 14, thereby forming a beam-like structure in which the two side covers 12 vertically fix the two sides of the upper cover plate 11. The hollow support ribs 14 reduce the overall weight of the heavy manipulator cross beam 1 while ensuring the stability of the overall beam-like structure of the heavy manipulator cross beam 1. When the first reinforcing rib 3 is close to the corresponding support rib 14, the first reinforcing rib 3 can also be welded and fixed to the support rib 14 to improve the overall structural strength.

[0035] The utility model can perform online welding repair on the broken upper cover plate 11 on the cross beam of the heavy manipulator box body, saves maintenance time, reduces maintenance costs, reduces downtime losses, and provides guarantee for reasonable production.

[0036] Embodiment 3

[0037] The specific implementation of the local fracture welding reinforcement structure in the cross beam of the heavy manipulator described in the utility model is:

[0038] S1, drilling crack-stop holes at both ends of the local crack;

[0039] S2, welding the local crack;

[0040] S3, welding the main reinforcing rib plate 2, the first reinforcing rib plate 3 and the second reinforcing rib plate 4.

[0041] At the beginning of the reinforcement method described above, welding preparation is required:

[0042] Welding equipment: WS-400T manual argon arc welding machine, DC reverse connection. Low alloy steel welding materials use E5015 welding rods, φ4.0mm, φ3.2mm baking temperature 350℃×2h insulation barrel ready for use. Heating and heat treatment equipment: H01-20 baking gun, 3# welding nozzle, hose clamp, oxygen·acetylene bottle, oxygen·acetylene wind belt.

[0043] Welding position: horizontal symmetrical upward welding.

[0044] The welding position area and welding wire must be free of oil, oxide layer, moisture, etc., and the metallic luster must be exposed. To remove rust, grease, and moisture, use an oxyacetylene flame to remove moisture and oil, and then use emery cloth or a grinding wheel machine to grind and remove rust.

[0045] Welding technical requirements: The cladding layer shall be fused to the base material and the weld seam shall not have any welding defects.

[0046] The material of the heavy-duty manipulator crossbeam 1 is 16Mn low-alloy steel, and the material of the local fracture welding reinforcement structure in the heavy-duty manipulator crossbeam is 16Mn low-alloy steel.

[0047] Bevel: fillet weld.

[0048] Auxiliary facilities: sample, magnifying glass, mask, gloves, slag hammer, hammer, chisel, file, wire brush, sandpaper, steel ruler, level, adjustable wrench, straight grinder, angle grinder. Wire cutters, hacksaw blades, labor protection supplies (work clothes, shoes, hats, plain glasses).

[0049] The welding parameters of the local crack, the reinforcing main rib plate 2, the first reinforcing rib plate 3 and the second reinforcing rib plate 4 are shown in Table 1.

[0050] Table 1 Manual arc welding

[0051]

[0052] In the step S1, during normal welding, a pistol drill is used to drill crack-stop holes at both ends of the local cracks on the box cross beam to prevent the original cracks from continuing to expand during pre-welding heating or welding.

[0053] In step S2, the local crack and the surrounding area are heated and cleaned using a H01-20 baking gun. After completion, a V-shaped groove is processed on the local crack on the outside of the heavy manipulator beam 1 using a manual angle grinder and a straight grinder, and a repair weld is formed at the local crack by welding.

[0054] Specifically, the V-shaped groove must ensure that the base electrode can be melted through to form a single-sided weld and double-sided formation. Because the material is Q345 with a wall thickness of 12mm to 20mm, the H01-20 baking gun is used to preheat the two sides of the V-shaped groove (100℃ to 120℃) during the first layer of welding. The first layer of the base is a single-sided weld and double-sided formation. The welding method adopts the arc extinguishing and rod moving method. The arc extinguishing method can not only control the size of the welding gap of the groove, but also the welding molten hole penetrates the bottom of the crack to ensure the quality of single-sided welding and double-sided formation. The welding position is flat welding operation, the horizontal angle of the electrode is 80° to 90°, small current, short arc welding, after the bottom layer welding is completed, it is confirmed that there are no welding defects through visual inspection or a 10x magnifying glass inspection, and then the filling layer welding is carried out. For the second layer and above The welding current is a little bit larger, and the triangular welding method is adopted. There are more pauses on both sides to maintain the temperature between layers. After each layer is welded, it is confirmed that there are no welding defects. After the welding is 1mm~2mm lower than the base material, wait for the temperature of the overall weld of the welding layer to drop slightly, which is convenient for the final weld cover. When the weld is covered, the welding current is 10%~20% smaller than the filling layer. The crescent-shaped welding method is adopted. Not only the covering weld must be well fused with both sides of the base material, but also the transition to the base material body must be smooth. After the crack welding of the box beam is completed, the H01-20 baking gun is used to track and temper the weld at 300°, and then it is kept warm and waited for cooling to room temperature. After that, it is confirmed through inspection that the overall weld has no welding defects, and the weld surface is repaired and smoothed with a manual angle grinder.

[0055] In step S3, the repair weld is firstly smoothed with an angle grinder on the inner side of the heavy manipulator cross beam 1, and then the reinforcing main rib plate 2 is first fixed on both sides of the repair weld, and is welded and fixed with the corner welds of the upper cover plate 11 and the two side cover plates 12; after passing the magnetic particle flaw detection, the second reinforcing rib plate 4 is evenly fixed between the two reinforcing main rib plates 2, and is welded and fixed with the corner welds of the two reinforcing main rib plates 2 and the upper cover plate 11; after passing the magnetic particle flaw detection, the first reinforcing rib plate 3 is evenly fixed on one side of the two reinforcing main rib plates 2, and is welded and fixed with the corresponding reinforcing main rib plates 2 and the upper cover plate 11 corner welds, and is delivered for use after passing the magnetic particle flaw detection. After periodic coordinated suspension of two manipulators for operation inspection, the use effect of the overall box cross beam of the bridge manipulator is achieved.

[0056] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.

Claims

1. A local fracture welding reinforcement structure in a heavy manipulator crossbeam, characterized in that: Used to reinforce local cracks on a heavy-duty manipulator crossbeam, the heavy-duty manipulator crossbeam comprises an upper cover plate and two side cover plates, the two side cover plates are respectively arranged on both sides of the upper cover plate, and the local cracks are arranged on the upper cover plate; the local fracture welding reinforcement structure in the heavy-duty manipulator crossbeam comprises a reinforcing main rib plate, a first reinforcing rib plate and a second reinforcing rib plate, the reinforcing main rib plate, the first reinforcing rib plate and the second reinforcing rib plate are all arranged as flat plates, the two reinforcing main rib plates are symmetrically arranged on both sides of the local cracks, the reinforcing main rib plates are parallel and fixedly arranged on the upper cover plate, the first reinforcing rib plate and the second reinforcing rib plate are fixedly arranged on the upper cover plate and the first reinforcing rib plate and the second reinforcing rib plate are respectively arranged on both sides of the reinforcing main rib plate, the second reinforcing rib plate is arranged between the two reinforcing main rib plates, and is fixedly connected to the two reinforcing main rib plates, and the first reinforcing rib plate is fixedly connected to one reinforcing main rib plate and the upper cover plate at the same time.

2. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: The first reinforcing rib plate is configured as a right-angled triangle plate, and two right-angled sides of the first reinforcing rib plate are respectively fixedly connected to one of the reinforcing main rib plates and the upper cover plate.

3. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: The second reinforcing rib plate is configured as a rectangular plate, two parallel sides of the second reinforcing rib plate are respectively fixedly connected to the two reinforcing main rib plates, and the bottom edge of the second reinforcing rib plate is fixedly connected to the upper cover plate.

4. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: A plurality of the first reinforcing rib plates are equidistantly arranged along the extension direction of the reinforcing main rib plate, and a plurality of the second reinforcing rib plates are equidistantly arranged along the extension direction of the reinforcing main rib plate.

5. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: The first reinforcing rib plates and the second reinforcing rib plates on both sides of the same reinforcing main rib plate are arranged alternately.

6. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1, characterized in that: The first reinforcing rib plate, the second reinforcing rib and the reinforcing main rib plate are all vertically fixed on the upper cover plate, and the first reinforcing rib plate and the second reinforcing rib are both vertically fixed to the reinforcing main rib plate.

7. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: The top edge of the second reinforcing rib plate is provided with a concave weight-reducing groove.

8. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1 is characterized in that: Both ends of the reinforcing main rib plate are provided with reinforcing blocks, the width of the reinforcing blocks is greater than the width of the reinforcing main rib plate, and the two ends of the reinforcing main rib plate are fixedly connected to the two side cover plates respectively through the reinforcing blocks.

9. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1, characterized in that: The main reinforcing rib plate is cut and processed from a 40 mm steel plate, the first reinforcing rib plate is cut and processed from a 25 mm steel plate, and the second reinforcing rib plate is cut and processed from a 30 mm steel plate.

10. The local fracture welding reinforcement structure in the cross beam of a heavy manipulator as claimed in claim 1, characterized in that: The heavy manipulator crossbeam also includes a plurality of supporting ribs, each of which is arranged in a straight line. The supporting ribs are configured as hollow rectangular plates. The upper cover plate and the two side cover plates are respectively fixed on the three straight sides of each of the supporting ribs, thereby forming a beam-like structure in which the two side cover plates are vertically fixed on both sides of the upper cover plate.

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