CN-119566744-B - Manufacturing method of balance weight of stacked steel plate type ship lift

CN119566744BCN 119566744 BCN119566744 BCN 119566744BCN-119566744-B

Abstract

The manufacturing method of the balance weight block of the stacked steel plate type ship lift simplifies the processing flow of the large complex balance weight block. The method firstly uses continuous casting billet to cut into single stacked steel plates with grooves, and measures and lines the single stacked steel plates. Then, the two sets of stacked steel plates are assembled together by machining and pre-assembling the gap pads. And after the primary assembly is finished, carrying out secondary scribing on the balance weight, then drilling and processing a locking bolt hole, a pin shaft hole and a hanging lug hole, and carrying out countersink treatment on the holes. The next step is to blanking and install the edge sealing plates at the top and bottom of the groove. And (5) carrying out test hoisting and preassembling a hoisting shaft hole reinforcing plate, so as to ensure stable structure. And then the stop seat board is processed and installed, so that a guarantee is provided for final stability. And finally, verifying the overall performance of the balance weight by secondary test hoisting, and preassembling the residual edge sealing plate. The invention can realize the efficient processing of the large-scale overlapped steel plate type balance weights by adopting conventional general equipment.

Inventors

YUE CHENGGANG
LIU GANG
XU LINZHI
ZHANG JIANZHONG
ZUO CHEN
WANG JUAN
Chen Danfa
LV YANAN
SHANGGUAN QING
WANG KUANGUI
LUO BINLING

Assignees

中国葛洲坝集团机械船舶有限公司

Dates

Publication Date: 20260508
Application Date: 20241230

Claims (9)

1. The manufacturing method of the balance weight of the stacked steel plate type ship lift is characterized by comprising the following steps of: step 1, blanking a continuous casting billet, and cutting a single stacked steel plate (2) with a groove; step2, measuring and scribing the single laminated steel plate (2); step 3, manufacturing and pre-assembling a gap cushion block (9) of the spliced steel plates; step 4, stacking and assembling the two groups of stacked steel plates (2); Step 5, secondary scribing is carried out on the balance weight block (1); step 6, machining a balance weight locking bolt hole, a pin shaft hole and a lifting lug hole; step 7, counter bore processing is carried out on the balance weight locking bolt hole; Step 8, blanking and installing a balance weight groove and a top and bottom plate edge sealing plate; step 9, testing and hanging balance weights, and preassembling a hanging shaft hole reinforcing plate; step 10, machining and installing a stop plate seat board (5); step 11, carrying out test hoisting and preassembling the rest edge sealing plates (8) on the balance weight for the second time; the step 3 is as follows: placing a gap cushion block measuring plate (14) with adjusting screws (15) at the scribing position of the locking bolt holes, placing a frame level bar (13) above the gap cushion block measuring plate, measuring the elevations of 4 quadrant points and four round steel datum points on the gap cushion block measuring plate (14) to be equal by using a leveling instrument (10) through adjusting four adjusting screws (15) on the gap cushion block measuring plate (14), and horizontally arranging the frame level bar (13) in the longitudinal and transverse directions; Step 3-2, selecting a next annular plate of the numerical control cutting machine for the steel plate with proper thickness according to thickness values of 4 adjusting screws of the gap cushion block measuring plate (14), sequentially placing the gap cushion block measuring plate (14) and the gap cushion block (9) to be processed in a lathe chuck (16) and tightly attaching the gap cushion block measuring plate and the gap cushion block (9) with the required eccentric thickness by using a lathe and adopting an eccentric processing method to process the annular plate; And 3-3, checking the fit degree of the cushion block (9) and the surface of the overlapped steel plate (2), and installing and spot welding the cushion block after the cushion block is qualified.
2. The method for manufacturing the balance weight of the stacked steel plate ship lift, which is characterized in that in the step 1, a numerical control flame cutting machine is adopted to feed the continuous casting billet.
3. The manufacturing method of the balance weight of the stacked steel plate type ship lift, as claimed in claim 1, is characterized in that the sub-steps of the step 2 are as follows: step 2-1, according to the measurement record of each stacked steel plate (2), pairwise pairing the stacked steel plates (2) according to the principle of similar deviation; Step 2-2, hanging a single stacked steel plate (2) on a processing platform, and adjusting the stacked steel plate (2) to be in a horizontal state through hydraulic jacks at four corners of the platform; step 2-3, drawing a vertical central line and a horizontal central line; step 2-4, marking the center line of the hole of the locking bolt (6); And 2-5, measuring the elevation of the point by using a leveling instrument (10), and taking the average value of the elevation as the reference elevation of the A plane.
4. The manufacturing method of the balance weight of the laminated steel plate ship lift is characterized in that the number of laminated steel plates is multiple, the number of the laminated steel plates is 2# and is hung above the number of the laminated steel plates 1#, after the vertical central lines and the horizontal central lines of the two laminated steel plates are aligned, the number of the laminated steel plates 2# and the number of the laminated steel plates 2# are dropped onto the number of the laminated steel plates 1# and the two laminated steel plates are firmly welded by a backing plate to form the balance weight (1).
5. The manufacturing method of the balance weight of the stacked steel plate type ship lift, which is characterized in that the step 5 comprises the following substeps: Step 5-1, on the scribing platform, correcting and scribing the vertical central line of the balance weight block (1) again by taking the two sides of the two overlapped steel plates (2) and the two sides of the groove as reference lines; 5-2, respectively re-scribing central lines of the lug holes, the bolt holes and the shearing pin shaft holes, hole processing lines and checking round lines by taking the vertical central line and the horizontal central line of the balance weight block (1) as references; And 5-3, measuring the distance between the upper surfaces of 4 phi 20 round steels with diameters of the B surface of the 2# balance weight stacked steel plates (2) positioned at four corners and the lower surfaces of the corresponding round steels of the 1# stacked steel plates (2), taking the average height as the central surface in the thickness direction of the balance weight, and taking the plane elevation as the reference elevation of the thickness plane of the balance weight.
6. The manufacturing method of the balance weight of the stacked steel plate type ship lift, according to claim 1, is characterized in that the sub-step 6 is as follows: step 6-1, hanging the balance weight (1) below the radial drilling machine (17), adjusting the base of the drilling machine (17) to be in a horizontal state, and fixing the drilling machine (17) on a foundation; Step 6-2, adjusting the position of a spindle box of the drilling machine, aligning a drill bit to the center of a locking bolt hole, and drilling the locking bolt hole by using a large-aperture adjustable U-shaped drill (18); and 6-3, sequentially drilling other shear pin shaft holes and lifting lug holes by using a large-aperture adjustable U-shaped drill (18) according to the same method, wherein the diameters of the locking bolt holes and the shear pin shaft hole drilling holes are matched with the diameters of positioning bearings of the adjustable large-aperture counter bore U-shaped drill (19).
7. The manufacturing method of the balance weight of the stacked steel plate type ship lift, which is characterized by comprising the following substeps: step 7-1, placing a torque balance weight (1) below the radial drilling machine, and adjusting the balance weight to be in a horizontal state; step 7-2, adjusting the position of a spindle box of the drilling machine, and drilling and milling a countersink of a locking bolt hole and a shearing pin Kong Chenkong by using a countersink U drill (19) with an adjustable large aperture; 7-3, turning over the balance weight block (1) by using a tool, and adjusting the balance weight block to a horizontal state by enabling a B surface of the 1# overlapped steel plate (2) to face upwards; and 7-4, penetrating the bolt (6) into the locking bolt hole and screwing the bolt.
8. The manufacturing method of the balance weight of the stacked steel plate type ship lift, as claimed in claim 1, is characterized in that the sub-step 8 is as follows: step 8-1, respectively pulling side lines on two sides of the upper surface of the balance weight (1) and distance lines between two sides of the groove on the basis of the vertical central line of the balance weight (1), checking and recording the distance between the vertical surface of the side lines and the side edges of the balance weight by using a vertical method, calculating flat steel blanking, and using the flat steel blanking as an adjustment patch (20) of a groove seal and a top and bottom plate edge sealing plate (8), and welding; 8-2, adjusting the mounting mode of the patch board (20), wherein if the clearance between the edge sealing board (8) and the overlapped steel plate (2) is smaller than 2mm, adopting a C1 node mode, and if the clearance between the edge sealing board (8) and the overlapped steel plate (2) is larger than 2mm, adopting a C2 node mode; 8-3, after the adjustment of the groove and the edge sealing plates (20) of the top and bottom plates (8) is completed, checking the distance between the vertical surface of the edge and the side edge of the balance weight and the vertical condition of the edge sealing plates of the balance weight by using a pull wire again; And 8-4, installing a blanking edge sealing plate (8) on the three sides of the groove of the balance weight and the top and bottom sealing plates of the balance weight, positioning the vertical position of the edge sealing plate by taking the elevation center line of the balance weight as a reference, checking again after spot welding the edge sealing plate, confirming the three sides of the groove of the balance weight, the verticality of the top and bottom sealing plates of the balance weight and the distance from the center line, and welding the edge sealing plate after error-free.
9. The manufacturing method of the balance weight of the stacked steel plate type ship lift, as claimed in claim 1, wherein the step 9 comprises the following sub-steps: Step 9-1, placing the balance weight (1) on a tire frame to adjust to a horizontal state, and measuring the distance from the upper plane of the lifting lug (3) to the base plane by taking the reference elevation of the average plane of the thickness of the balance weight as a reference to process a lifting lug reinforcing plate (24) of the stacked steel plates; Step 9-2, temporarily spot-welding lifting lug reinforcing plates (24) to two sides of a lifting lug hole, installing a tool lifting lug (3), and simultaneously installing a line pile (23) and a measuring line hammer (22) below the lifting lug hole; Step 9-3, slowly lifting the balance weight (1) by a crane until the balance weight is in an upright suspension state, measuring the weight of the flat moment weight and the offset value of the lifting wire hammer (22), and adjusting the thickness of lifting lug reinforcing plates (24) at two sides if the offset value of the balance weight along the water flow direction is greater than 10mm, wherein an electronic hanging scale (21) is arranged under a main hanging hook of the crane; The step 10 comprises the following substeps: Step 10-1, firstly, placing a balance weight (1) on a scribing platform in a falling hook manner by using a crane, and adjusting the balance weight to be in a horizontal state according to an average thickness reference plane of the balance weight; 10-2, placing a stop plate seat plate measuring plate (26) with adjusting screws at the scribing position of the stop plate seat plate (5) by taking the upper surface of a lifting lug reinforcing plate (24) as a reference, placing a frame level bar (13) above the stop plate seat plate measuring plate, measuring the heights of 4 corner points and four round steel datum points on the stop plate seat plate measuring plate (26) by using a level gauge (10) through adjusting four adjusting screws (15) on the stop plate seat plate measuring plate (26), and horizontally arranging the frame level bar (13) in the longitudinal and transverse directions; step 10-3, selecting a next rectangular plate of a steel plate with proper thickness by a numerical control cutting machine according to thickness values of 4 adjusting screws of a stop plate seat plate measuring plate (26), sequentially placing the stop plate seat plate measuring plate (26) and the stop plate seat plate (5) to be processed in a lathe chuck (16) and tightly attaching the stop plate seat plate and processing the rectangular plate into the stop plate seat plate (5) with the eccentric thickness by using a lathe by adopting an eccentric processing method; Step 10-4, placing a rectangular plate at a position corresponding to the stop plate seat plate (5), checking the fitting degree of the backing plate and the surface of the overlapped steel plate (2), and mounting and spot-welding the stop plate seat plate (5) after the backing plate is qualified; the sub-step of step 11 is: Step 11-1, installing a tooling lifting lug (3) on a balance weight (1), and simultaneously installing a line pile (23) and a measuring line weight (22) below a lifting shaft hole; Step 11-2, slowly hoisting the balance weight (1) by a crane until the balance weight is in an upright suspension state, measuring the weight of the flat moment weight and the offset value of the lifting wire hammer (22), checking whether the offset value of the balance weight in the vertical water flow direction is larger than 5mm, and calculating the plate thickness of the edge sealing plates (8) at the two sides of the balance weight according to the weight difference of the balance weight and the offset value of the balance weight in the vertical water flow direction; Step 11-3, firstly, placing the balance weight (1) on a line drawing platform in a horizontal position, slowly placing the balance weight on the line drawing platform, blanking the line drawing platform according to the pre-calculated plate thickness, and positioning and welding the line drawing platform on two sides of the balance weight (1); Step 11-4, slowly hoisting the balance weight (1) by using a crane until the balance weight is in a vertical suspension state, checking whether the offset value of the balance weight perpendicular to the water flow direction is greater than 5mm and whether the offset value along the water flow direction is greater than 10mm, placing the balance weight in a hook-falling manner after error is avoided, and welding edge sealing plates (8) on two sides of the balance weight; and 11-5, during the measuring and processing process of the backing plate, the balance weight (1) is firstly installed and clamped by a turning-over clamp (27) during turning over, and then the lifting lug of the turning-over clamp (27) is hung by a crane to turn over.

Description

Manufacturing method of balance weight of stacked steel plate type ship lift Technical Field The invention belongs to the field of hydraulic engineering equipment manufacturing, and particularly relates to a manufacturing method of a balance weight of a stacked steel plate type ship lift. Background The counterweight type vertical ship lift utilizes counterweight blocks to balance the weight of a ship receiving box, and lifting power is only used for overcoming the resistance and inertia force of an unbalanced weight and a motion system. The balance weights of the small ship lifts generally adopt a concrete structure, and the large ship lifts generally adopt cast steel billets or stacked steel plate balance weights. The stacked steel plate type balance weight is formed by stacking two layers of steel plates, and compared with a cast steel billet, the single stacked steel plate is light in weight, the density of the rolled steel plate is more uniform, the thickness and size precision are higher, and the application range is wider and wider. The balance weight block of the stacked steel plate type ship lift is formed by stacking two layers of steel plates, the top of the balance weight block is provided with a lifting lug, the lifting lug suspends the balance weight block through a hanging shaft, and the hanging shaft penetrates through the stacked steel plates of the balance weight block. Pin shaft holes and bolt holes matched with the pin shafts and the connecting bolts are formed in the overlapped steel plates of the balance weights, so that corresponding counter bores are formed. The balance weight is a cuboid with a groove, and a gap cushion block is arranged at the bolt hole position at the inner side of the stacked steel plates. The periphery of the balance weight is welded with a peripheral sealing plate, and a stop plate is arranged outside the stacked steel plates of the balance weight. The counterweight blocks of a ship lift are generally large in overall size and heavy in weight. For example, the external dimension of the balance weight of a large ship lift in China is 9m multiplied by 2m multiplied by 0.368m (height multiplied by width multiplied by thickness), the weight of a single piece is 45t, wherein the thickness of each piece of stacked steel plate is 169mm, and the weight is 22.5t. The device is provided with 6 bolt holes with the diameter phi of 70mm, 4 pin shaft holes with the diameter phi of 120mm and 1 hanging shaft hole with the diameter phi of 160 mm. Bolt hole and pin shaft hole two ends is provided with a counter bore with the diameter phi of 160 mm. The balance weight is assembled with the safety beam, so that the requirement on the external dimension is high, and the planeness of the groove external dimension of the balance weight and the stop plate seat board is +/-1 mm. In addition, the mass error of the balance weight is required to be not more than 200kg, and the deflection of the balance weight in the water flow direction in the whole height range is not more than 10mm and the deflection of the balance weight in the vertical water flow direction is not more than 5mm in the steel wire rope suspension state after the balance weight is installed on site. Because the steel plate type ship lift balance weight is large in weight, large in machining aperture and high in requirement on machining precision of external dimensions, the steel plate type ship lift balance weight is machined by adopting special machine tools such as a large-scale boring and milling machine and a planer type milling machine in the traditional method, special large-scale machining equipment and lifting capacity are needed in the methods, the equipment use cost is high, the machining period is long, and the work efficiency is low. Therefore, improvements in the conventional manufacturing and processing methods are needed to improve the manufacturing and processing efficiency and save the processing cost. Disclosure of Invention The invention aims to solve the technical problem of providing a manufacturing method of the balance weight of the stacked steel plate type ship lift, which can solve the problem of processing and manufacturing of the large stacked steel plate type balance weight, adopts conventional general processing equipment for processing, has simple and easy method, improves the processing work efficiency and greatly reduces the manufacturing cost. In order to solve the technical problems, the invention adopts the following technical scheme: a manufacturing method of a balance weight of a stacked steel plate type ship lift comprises the following steps: And 1, blanking the continuous casting billet, and cutting a single stacked steel plate with a groove. And a numerical control flame cutting machine is adopted for blanking, so that the overall dimension of the stacked steel plates can be controlled within a specified tolerance range. And 2, measuring and scribing the single laminated steel plat