Arc repairing plate mounting device for large structural part lifting arm

Abstract

The utility model discloses an arc repair plate installation device for a large structural member lifting arm, which comprises an arc repair plate and a structure adjusting part, a first binding surface and a second binding surface are arranged on the lifting arm, and an R angle section to be repaired is arranged at the connection position of the first binding surface and the second binding surface. The structure adjusting part is fixedly arranged on one side of the lifting arm, the arc repairing plate is connected with the structure adjusting part, the arc repairing plate is arranged corresponding to the R-angle section, and the structure adjusting part adjusts the relative position between the arc repairing plate and the lifting arm; the arc repairing plate is adjusted through the structure adjusting part, so that the fixing position of the arc repairing plate on the lifting arm is more accurate, the R-angle section, prone to cracking, of the lifting arm is machined and repaired through the arc repairing plate, and the service life of the repaired lifting arm is prolonged; and the conditions of resource waste caused by replacement of the lifting arm and short service life caused by only welding crack repair are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of large equipment repair, in particular to an arc repair plate installation device for a lifting arm of a large structural member. Background Art

[0002] The lifting arm, a key component of the continuous casting machine's ladle turret, is a large structural part. It is installed on the center line of the casting machine and supported by a spherical joint bearing on the bracket. The lifting arm adopts a parallel four-bar linkage to ensure the translation and lifting of the ladle. Long-term load use will cause cracks to appear on the crossbeam of the lifting arm box, a large structural part. The cracks will continue to expand with the use time, making it impossible for the lifting arm to operate normally.

[0003] The existing repair method generally adopts on-site crack welding repair. Although the repair weld can be guaranteed to be defect-free when the crack is repaired by welding, the post-weld heat treatment can reduce stress concentration, and the drawing size and precision size can be restored by online manual grinding, and the production can be delivered in time. However, for cracks at the R corner of the lifting arm of a large structural part, after welding repair, various mechanical properties cannot meet the long-term use requirements of the lifting arm translation and lifting due to the influence of welding repair. In order to meet long-term use, the lifting arm generally needs to be replaced, but the lifting arm is large in size, and there are certain difficulties in disassembly, hoisting and transportation. In addition, the replacement of local components is not suitable for the assembly of new and old equipment, which is also easy to waste a lot of procurement costs.

[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-mentioned technical defects, the technical solution adopted by the utility model is to provide an arc repair plate installation device for a lifting arm of a large structural member, including an arc repair plate and a structural adjustment part. The lifting arm is provided with a first fitting surface and a second fitting surface. The R-angle segment to be repaired is arranged at the connecting position of the first fitting surface and the second fitting surface. The structural adjustment part is fixedly arranged on one side of the lifting arm, the arc repair plate is connected to the structural adjustment part, and the arc repair plate is arranged corresponding to the R-angle segment. The structural adjustment part adjusts the relative position between the arc repair plate and the lifting arm.

[0006] Preferably, the structural adjustment portion includes a support frame and an adjustment plate, the adjustment plate is horizontally arranged through the support frame, and the adjustment plate is arranged directly above the R angle segment, and the adjustment plate is provided with a first adjustment component and a second adjustment component, and the first adjustment component and the second adjustment component are both connected to the arc repair plate.

[0007] Preferably, the arc repair plate includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are connected by an arc segment, the first connecting plate and the second connecting plate can both fit into corresponding positions of the lifting arm, the first adjusting component is connected to the first connecting plate by a first adjusting line, the second adjusting component is connected to the second connecting plate by a second adjusting line, and the first adjusting component and the second adjusting component respectively adjust the two end positions of the arc repair plate.

[0008] Preferably, the first adjustment component includes an adjustment frame, an adjustment port and a limit portion, the two ends of the adjustment frame are restricted by the limit portion to achieve linear movement, the adjustment port is arranged on the adjustment plate, and a first adjustment block is arranged on the adjustment frame, the first adjustment block is connected to the arc repair plate through the first adjustment line, and the first adjustment block is correspondingly arranged in the adjustment port.

[0009] Preferably, the limiting portion includes two parallel limiting bars, the limiting bars are fixedly arranged on the adjusting plate, the rectangular adjusting frame is between the two limiting bars and both ends of the adjusting frame are in close contact with the two limiting bars, the adjusting frame can move in a straight line along the limiting bars, and limiting blocks are also arranged at both ends of the limiting bars, and the limiting blocks are used to limit the straight line travel of the adjusting frame along the limiting bars.

[0010] Preferably, the limiting portion is configured as a first adjustment groove, the first adjustment grooves are all configured on the adjustment plate, a limiting movable block is configured on the adjustment frame, the limiting movable block is configured in the first adjustment groove, and the limiting movable block can move freely along the extension direction of the first adjustment groove to drive the adjustment frame to move along the extension direction of the first adjustment groove.

[0011] Preferably, two first adjustment grooves are provided, and the two first adjustment grooves are arranged in parallel, the two first adjustment grooves are respectively arranged on both sides of the adjustment port, and the limiting movable blocks are provided at both ends of the adjustment frame, and the two limiting movable blocks are respectively correspondingly arranged in the two first adjustment grooves.

[0012] Preferably, a second adjustment slot is provided on the adjustment frame, the first adjustment block is arranged in the second adjustment slot, and the first adjustment block can move freely along the second adjustment slot, and the extension direction of the second adjustment slot is perpendicular to the extension direction of the first adjustment slot.

[0013] Preferably, the second adjustment assembly includes a third adjustment groove and a second adjustment block, the third adjustment groove is arranged on the adjustment plate, the second adjustment block is arranged in the third adjustment groove, and the second adjustment block can move freely along the third adjustment groove, and the second adjustment block is connected to the arc repair plate through the second adjustment line.

[0014] Preferably, a fixed collision block is provided on the second fitting surface, and an avoidance groove is provided on the second connecting plate, the avoidance groove is provided corresponding to the fixed collision block, and two second adjustment blocks are provided, and the two second adjustment blocks are respectively connected to the second connecting plate through the second adjustment line, and the two second adjustment lines are respectively provided on both sides of the avoidance groove.

[0015] Compared with the prior art, the beneficial effect of the utility model is that: the utility model adjusts the arc repair plate through the structural adjustment part, so that the fixed position of the arc repair plate on the lifting arm is more accurate, so that the R-angle section of the lifting arm that is prone to cracks is processed and repaired by the arc repair plate, so as to increase the service life of the lifting arm after repair, avoid the waste of resources caused by the replacement of the lifting arm and the low service life caused by only welding crack repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural view of the arc repair plate installation device for the lifting arm of a large structural member in an adjusted state;

[0017] Figure 2 A structural front view of the arc repair plate installation device for the lifting arm of a large structural member in an adjusted state;

[0018] Figure 3 A three-dimensional structural view of the arc repair plate installation device for the lifting arm of the large structural member after adjustment;

[0019] Figure 4 This is a structural front view of the arc repair plate installation device for the large structural member lifting arm after adjustment.

[0020] The numbers in the figure represent:

[0021] 1-arc repair plate; 2-structural adjustment part; 3-lifting arm; 11-first connecting plate; 12-second connecting plate; 13-fixed hanging point; 21-support frame; 22-adjustment plate; 23-first adjustment component; 24-second adjustment component; 31-first fitting surface; 32-second fitting surface; 33-R angle segment; 34-fixed collision block; 121-avoidance groove; 211-bottom frame; 212-support rod; 231-first adjustment line; 232-adjustment frame; 233-adjustment mouth; 234-limiting strip; 235-limiting block; 236-first adjustment block; 237-second adjustment groove; 241-second adjustment line; 242-third adjustment groove; 243-second adjustment block. DETAILED DESCRIPTION

[0022] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0023] Embodiment 1

[0024] The utility model welds an arc repair plate at the corresponding position of the lifting arm, and uses the arc repair plate to process and repair the R-angle section of the lifting arm that is prone to cracks, thereby increasing the service life of the lifting arm after repair, avoiding the replacement of the lifting arm or the situation of low service life caused by only welding crack repairs.

[0025] like Figures 1 to 4 As shown, Figure 1 A three-dimensional structural view of the arc repair plate installation device for the lifting arm of a large structural member in an adjusted state; Figure 2 A structural front view of the arc repair plate installation device for the lifting arm of a large structural member in an adjusted state; Figure 3 A three-dimensional structural view of the arc repair plate installation device for the lifting arm of the large structural member after adjustment; Figure 4 This is a structural front view of the arc repair plate installation device for the large structural member lifting arm after adjustment.

[0026] The arc repair plate installation device for the lifting arm of a large structural member described in the utility model includes an arc repair plate 1 and a structural adjustment part 2. A first fitting surface 31 and a second fitting surface 32 are provided on the lifting arm 3. The R-angle segment 33 to be repaired is arranged at the connecting position of the first fitting surface 31 and the second fitting surface 32. The structural adjustment part 2 is fixedly arranged on one side of the lifting arm 3. The arc repair plate 1 is connected to the structural adjustment part 2, and the arc repair plate 1 is arranged corresponding to the R-angle segment 33. The structural adjustment part 2 adjusts the relative position between the arc repair plate 1 and the lifting arm 3, thereby ensuring that the position of the machined arc plate on the lifting arm 3 is accurate.

[0027] The structural adjustment part 2 includes a support frame 21 and an adjustment plate 22. The adjustment plate 22 is horizontally arranged through the support frame 21, and the adjustment plate 22 is arranged directly above the R angle section 33 of the lifting arm. The adjustment plate 22 is provided with a first adjustment component 23 and a second adjustment component 24. The first adjustment component 23 and the second adjustment component 24 are both connected to the arc repair plate 1.

[0028] Specifically, the arc repair plate 1 includes a first connecting plate 11 and a second connecting plate 12, the first connecting plate 11 and the second connecting plate 12 are connected by an arc segment, the first connecting plate 11 and the second connecting plate 12 can both fit in the corresponding positions of the lifting arm 3, the first adjusting component 23 is connected to the first connecting plate 11 through a first adjusting line 231, and the second adjusting component 24 is connected to the second connecting plate 12 through a second adjusting line 241, the first adjusting component 23 and the second adjusting component 24 respectively adjust the positions of the two ends of the arc repair plate 1, thereby ensuring that the corresponding position of the arc repair plate 1 on the lifting arm 3 is accurate.

[0029] Generally, the first adjustment component 23 includes an adjustment frame 232, an adjustment port 233 and a limiting portion, and the two ends of the adjustment frame 232 are restricted by the limiting portion to achieve linear movement. The adjustment port 233 is arranged on the adjustment plate 22, and a first adjustment block 236 is arranged on the adjustment frame 232. The first adjustment block 236 is connected to the arc repair plate 1 through the first adjustment line 231, and the first adjustment block 236 is correspondingly arranged in the adjustment port 233. The adjustment port 233 facilitates the connection between the first adjustment block 236 and the arc repair plate 1.

[0030] The limiting portion can be set as two parallel limiting strips 234, and the limiting strips 234 are fixedly set on the adjustment plate 22. The rectangular adjustment frame 232 forms a card-connected limit between the two limiting strips 234. The adjustment frame can only move in a straight line along the limiting strips 234. Limiting blocks 235 are also set at both ends of the limiting strips 234. The limiting blocks 235 are used to limit the straight-line travel of the adjustment frame 232 along the limiting strips 234.

[0031] The limiting portion can be set as a first adjustment groove, and the first adjustment grooves are all set on the adjustment plate 22. A limiting movable block is set on the adjustment frame 232, and the limiting movable block is set in the first adjustment groove. The limiting movable block can move freely along the extension direction of the first adjustment groove, thereby driving the adjustment frame 232 to move along the extension direction of the first adjustment groove.

[0032] Preferably, two first adjustment grooves are provided, and the two first adjustment grooves are arranged in parallel, the two first adjustment grooves are respectively arranged on both sides of the adjustment port 233, and the limiting movable blocks are provided at both ends of the adjustment frame 232, and the two limiting movable blocks are respectively arranged in the two first adjustment grooves, thereby ensuring the stable linear movement of the adjustment frame 232.

[0033] The adjustment frame 232 is provided with a second adjustment groove 237, the first adjustment block 236 is arranged in the second adjustment groove 237, and the first adjustment block 236 can move freely along the second adjustment groove 237, and the extension direction of the second adjustment groove 237 is perpendicular to the extension direction of the first adjustment groove, so that the first adjustment block 236 can realize the adjustment movement of the end of the arc repair plate 1 on the horizontal plane.

[0034] The second adjustment component 24 includes a third adjustment groove 242 and a second adjustment block 243. The third adjustment groove 242 is arranged on the adjustment plate 22, and the second adjustment block 243 is arranged in the third adjustment groove 242. The second adjustment block 243 can move freely along the third adjustment groove 242. The second adjustment block 243 is connected to the arc repair plate 1 through the second adjustment line 241. The position of the end of the arc repair plate 1 can be adjusted by moving the second adjustment block 243 in the third adjustment groove 242.

[0035] It is worth pointing out that in this embodiment, when repairing, the first fitting surface 31 and the first connecting plate 11 are welded and fixed, the second fitting surface 32 and the second connecting plate 12 are welded and fixed, and the arc segment corresponds to strengthening the R corner segment 33, thereby realizing the reinforcement repair operation of the arc repair plate 1 on the crack of the R corner segment 33 of the lifting arm 3.

[0036] Generally, during the repair process, the first fitting surface 31 is set as a horizontal plane, and correspondingly, the first connecting plate 11 is set horizontally, and the first adjustment component 23 is used to adjust the horizontal position of the first connecting plate 11. A fixed collision block 34 is set on the second fitting surface 32, and the fixed collision block 34 is the original structure of the lifting arm 3, so the second connecting plate 12 is provided with an avoidance groove 121, and the avoidance groove 121 is set corresponding to the fixed collision block 34 to avoid interference between the arc repair plate 1 and the lifting arm 3, so under the corresponding setting of the avoidance groove 121 and the fixed collision block 34, the second adjustment block 243 has a pulling effect on the second connecting plate 12, and during the adjustment process, the second connecting plate 12 is tilted and lifted or lowered along the second fitting surface 32, that is, the positional coordination between the avoidance groove 121 and the fixed collision block 34 and the horizontal movement adjustment of the second adjustment block 243 realize the position adjustment of the second connecting plate 12 on the second fitting surface 32.

[0037] Generally, two second adjustment blocks 243 are provided, and the two second adjustment blocks 243 are respectively connected to the second connecting plate 12 through the second adjustment lines 241, and the two second adjustment lines 241 are respectively provided on both sides of the avoidance groove 121, so as to ensure stable adjustment of the second connecting plate 12 on the second fitting surface 32.

[0038] The extension direction of the first adjustment groove and the second adjustment groove 237 are consistent, and the first adjustment groove extends along the first fitting surface 31 toward the second fitting surface 32, thereby ensuring that the first adjustment component 23 and the second adjustment component 24 adjust the lifting position of the arc repair plate 1.

[0039] The support frame 21 includes a bottom frame 211 and a support rod 212. The bottom frame 211 is horizontally arranged, and the support rod 212 is vertically connected to the upper surface of the bottom frame 211. The upper end of the support rod 212 is fixedly connected to the adjustment plate 22. At least two of the support rods 212 are in close contact with the side of the lifting arm 3 or are welded and fixed, thereby ensuring the relative position between the adjustment plate 22 and the lifting arm 3 is stable.

[0040] It is worth pointing out that in this embodiment, the original structure of the lifting arm 3, such as the fixed collision block 34, is provided on the second fitting surface 32, and it is necessary to avoid the original structure by providing the avoidance groove 121. At the same time, the relative position coordination and positioning between the arc repair plate 1 and the lifting arm 3 can be achieved through the cooperation of the original structure and the avoidance groove 121.

[0041] If there is no original structure, the structure of the second adjustment component 24 can be consistent with the structure of the first adjustment component 23, that is, the second connecting plate 12 can also be adjusted in two directions on the horizontal plane, thereby improving the position adjustment accuracy of the second connecting plate 12 on the second fitting surface 32.

[0042] Similarly, if the first fitting surface 31 and the second fitting surface 32 are both provided with original structures requiring the first connecting plate 11 and the second connecting plate 12 to be provided with avoidance grooves 121 to avoid interference, the first adjustment component 23 can also be configured to be consistent with the structure of the second adjustment component 24, and the adjustment of the first connecting plate 11 and the second connecting plate 12 can be achieved through the coordination of the avoidance groove 121 with the original structure and unidirectional adjustment.

[0043] The utility model adjusts the arc repair plate 1 through the structural adjustment part 2, so that the arc repair plate 1 is more accurately fixed on the lifting arm 3, so that the R-angle section 33 of the lifting arm 3 that is prone to cracks is processed and repaired through the arc repair plate 1, so as to increase the service life of the lifting arm 3 after repair, avoid the waste of resources caused by the replacement of the lifting arm 3 and the low service life caused by only welding crack repair.

[0044] Embodiment 2

[0045] The specific steps of using the arc repair plate installation device for the lifting arm of a large structural member of the utility model to repair the R corner section of the lifting arm are as follows: the arc repair plate 1 is placed under the adjustment plate 22, and a fixed hanging point 13 is arranged on the arc repair plate 1. The two ends of the first adjustment line 231 are respectively connected to the corresponding fixed hanging point 13 and the first adjustment block 236, and the two ends of the second adjustment line 241 are respectively connected to the corresponding fixed hanging point 13 and the second adjustment block 243. The arc repair plate 1 is hung on the structural adjustment part 2, and then the structural adjustment part 2 is fixedly arranged on one side of the lifting arm 3. The front support frame of the structural adjustment part 2 is welded to the side of the lifting arm 3, and the rear support frame of the structural adjustment part 2 is welded to the end of the lifting arm 3 to ensure that the arc repair plate 1 is above the R angle section 33. At the same time, the adjustment frame 232, the first adjustment block 236 and the second adjustment block 243 are linearly adjusted to determine that the first connecting plate 11 is horizontally installed on the first fitting surface 31, and the avoidance groove 121 is inserted into and set on the outside of the fixed collision block 34 on the lifting arm 3. Finally, the first connecting plate 11 and the first fitting surface 31, the second connecting plate 12 and the second fitting surface 32 are symmetrically welded and fixed respectively.

[0046] After all fillet welds have passed UT and MT flaw detection and are found to be defect-free, the structural adjustment part 2 is removed, and the on-site actual sample inspection and acceptance fully complies with the design and installation requirements, and is put into use. After periodic continuous casting machine large package turntable operation inspection, the mechanical performance effect is achieved.

[0047] The fixed hanging point 13 is evenly welded and fixed to the upper surface of the arc repair plate 1 by nuts with a diameter of 50, and the first adjustment line 231 and the second adjustment line 241 are respectively connected to the first adjustment block 236 and the second adjustment block 243.

[0048] The use of the utility model for repairing the lifting arm of a large structural member is not only safe and easy to operate, but also has stable welding quality and low investment cost, meets actual on-site needs, has high work efficiency, and greatly reduces maintenance costs and reduces losses caused by long-term downtime, thus providing a guarantee for reasonable production.

[0049] 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. An arc repair plate installation device for a large structural lifting arm, characterized in that: It includes an arc repair plate and a structural adjustment part. A first fitting surface and a second fitting surface are provided on the lifting arm. The R-angle segment to be repaired is provided at the connecting position of the first fitting surface and the second fitting surface. The structural adjustment part is fixedly provided on one side of the lifting arm. The arc repair plate is connected to the structural adjustment part, and the arc repair plate is provided corresponding to the R-angle segment. The structural adjustment part adjusts the relative position between the arc repair plate and the lifting arm.

2. The arc repair plate installation device for the lifting arm of a large structural member according to claim 1, characterized in that: The structural adjustment part includes a support frame and an adjustment plate, the adjustment plate is horizontally arranged through the support frame, and the adjustment plate is arranged directly above the R angle segment, and the adjustment plate is provided with a first adjustment component and a second adjustment component, and the first adjustment component and the second adjustment component are both connected to the arc repair plate.

3. The arc repair plate installation device for the lifting arm of a large structural member according to claim 2, characterized in that: The arc repair plate includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are connected by an arc segment, the first connecting plate and the second connecting plate can both be fitted to the corresponding positions of the lifting arm, the first adjusting component is connected to the first connecting plate by a first adjusting line, the second adjusting component is connected to the second connecting plate by a second adjusting line, the first adjusting component and the second adjusting component respectively adjust the two end positions of the arc repair plate.

4. The arc repair plate installation device for the lifting arm of a large structural member as claimed in claim 3 is characterized in that: The first adjustment component includes an adjustment frame, an adjustment port and a limit portion, the two ends of the adjustment frame are restricted by the limit portion to achieve linear movement, the adjustment port is arranged on the adjustment plate, and a first adjustment block is arranged on the adjustment frame, the first adjustment block is connected to the arc repair plate through the first adjustment line, and the first adjustment block is correspondingly arranged in the adjustment port.

5. The arc repair plate installation device for the lifting arm of a large structural member according to claim 4, characterized in that: The limiting portion includes two parallel limiting bars, which are fixedly arranged on the adjustment plate. The rectangular adjustment frame is between the two limiting bars and both ends of the adjustment frame are in close contact with the two limiting bars. The adjustment frame can move in a straight line along the limiting bars. Limiting blocks are also arranged at both ends of the limiting bars. The limiting blocks are used to limit the straight line travel of the adjustment frame along the limiting bars.

6. The arc repair plate installation device for a large structural lifting arm as claimed in claim 4, characterized in that: The limiting portion is set as a first adjustment groove, and the first adjustment grooves are all set on the adjustment plate. A limiting movable block is set on the adjustment frame, and the limiting movable block is set in the first adjustment groove. The limiting movable block can move freely along the extension direction of the first adjustment groove to drive the adjustment frame to move along the extension direction of the first adjustment groove.

7. The arc repair plate installation device for a large structural member lifting arm according to claim 6, characterized in that: There are two first adjustment grooves, and the two first adjustment grooves are arranged in parallel. The two first adjustment grooves are respectively arranged on both sides of the adjustment port, and the limiting movable blocks are arranged at both ends of the adjustment frame. The two limiting movable blocks are respectively arranged in the two first adjustment grooves.

8. The arc repair plate installation device for a large structural lifting arm as claimed in claim 7, characterized in that: The adjustment frame is provided with a second adjustment slot, the first adjustment block is arranged in the second adjustment slot, and the first adjustment block can move freely along the second adjustment slot, and the extension direction of the second adjustment slot is perpendicular to the extension direction of the first adjustment slot.

9. The arc repair plate installation device for a large structural lifting arm as claimed in claim 3, characterized in that: The second adjustment component includes a third adjustment groove and a second adjustment block, the third adjustment groove is arranged on the adjustment plate, the second adjustment block is arranged in the third adjustment groove, and the second adjustment block can move freely along the third adjustment groove, and the second adjustment block is connected to the arc repair plate through the second adjustment line.

10. The arc repair plate installation device for a large structural lifting arm according to claim 9, characterized in that: A fixed collision block is arranged on the second fitting surface, and an avoidance groove is arranged on the second connecting plate, and the avoidance groove is arranged corresponding to the fixed collision block. Two second adjustment blocks are arranged, and the two second adjustment blocks are respectively connected to the second connecting plate through the second adjustment line, and the two second adjustment lines are respectively arranged on both sides of the avoidance groove.

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