A pulling and supporting device for the upper structure of an aluminum electrolysis cell

Abstract

The utility model relates to aluminum electrolysis cell maintenance technical field, concretely is a kind of aluminum electrolysis cell upper structure pull and carry support device, including the bottom plate being arranged in the carriage of transport vehicle, two support seats being arranged on the bottom plate, support plate being arranged on support seat, still include horizontal interval adjusting mechanism being arranged on the bottom plate and height adjusting mechanism being arranged on support seat;The horizontal interval adjusting mechanism is transmission connection with one support seat to drive support seat to move along the length direction of bottom plate, and the height adjusting mechanism is transmission connection with support plate to drive two support plates to move along the vertical direction of support seat. The device realizes gravity dynamic adaptation by horizontal interval adjusting mechanism and slidable support seat;The length direction of bottom plate is provided with sliding slot, and one support seat can slide along the sliding slot, cooperate the transmission structure of first screw rod and first hand wheel, and operator only needs to insert rocker to rotate first hand wheel, and then movable support seat can be driven to adjust interval.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolytic cell maintenance technology, specifically to a transport support device for the upper structure of an aluminum electrolytic cell. Background Technology

[0002] During major overhauls or equipment relocation of aluminum electrolytic cells, the upper structure (weighing 35-70 tons), including components such as anode busbars and column busbars, needs to be removed from the cell and transported to the maintenance site. Because the upper structure often experiences eccentric loads due to the inclined column busbars (a 500kA cell busbar weighs approximately 10 tons), causing a shift in the center of gravity, and because it needs to be compatible with transport vehicles of varying heights, the transport process requires precise adjustment of the center of gravity to prevent tilting, as well as flexible height adjustments for stable placement. This places core demands on the adjustability of the support device.

[0003] To address these challenges, existing technologies have developed related support devices. For example, Chinese Patent Publication No. CN207244017U discloses a lifting device for the upper structure of an electrolytic cell in an aluminum electrolytic plant. By setting shackles eccentrically at the top of the n-shaped frame, the lifting point coincides with the center of gravity of the upper structure, preventing tilting during lifting without additional counterweights and effectively solving the imbalance problem caused by eccentric loads.

[0004] However, this existing technology still has some limitations: 1. Its shackles are welded to the fixed position of the frame, which can only be adapted to the center of gravity position of a specific channel type. It cannot dynamically adjust the center of gravity according to different channel types or load changes, and its versatility is insufficient. 2. The device is not designed with a height adjustment structure, and it cannot flexibly adapt to the height difference when facing transfer vehicles of different heights, which makes the upper structure prone to impact or tilting risks when it is lowered.

[0005] Therefore, the development of a hauling support device that combines dynamic adjustment of the center of gravity with highly flexible adaptability has become an urgent need in the industry. Utility Model Content

[0006] The purpose of this invention is to provide a transport support device for the upper structure of an aluminum electrolysis cell, which solves the problems mentioned in the prior art in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a transport support device for the upper structure of an aluminum electrolysis cell, comprising a bottom plate installed inside a transport vehicle compartment, two support seats installed on the bottom plate, and support plates installed on the support seats, and further comprising a horizontal spacing adjustment mechanism installed on the bottom plate and a height adjustment mechanism installed on the support seats; the horizontal spacing adjustment mechanism is drivenly connected to one of the support seats to drive the support seat to move along the length direction of the bottom plate, and the height adjustment mechanism is drivenly connected to the support plates to drive the two support plates to move along the vertical direction of the support seats.

[0008] Furthermore, the base plate has a groove along its length, and one of the support seats is located in the groove and is slidably connected to the groove.

[0009] Furthermore, the horizontal spacing adjustment mechanism includes a first screw rotatably connected in the slide groove and a first handwheel located at the end of the first screw; the first screw is threadedly engaged with one of the support seats.

[0010] Furthermore, the height adjustment mechanism includes a vertical groove on one side of the two support seats that are far apart from each other, an upper limit plate horizontally disposed on one side of the two support seats that are far apart from each other, and a second screw vertically rotatably connected to the upper limit plate; the upper part of the support seat is provided with a limit groove communicating with the vertical groove, the support plate is T-shaped as a whole and its bottom is located in the limit groove and slides in cooperation with the limit groove, a transmission block is provided on one side of the bottom of the support plate, the transmission block extends to the outside of the vertical groove and slides vertically in cooperation with the vertical groove, the second screw is threadedly connected to the transmission block, and a second handwheel is provided at the end of the second screw.

[0011] Furthermore, a positioning sleeve and a positioning plate are respectively connected to the two support seats on their sides that are close to each other. The positioning plate is located inside the positioning sleeve and can slide inside the positioning sleeve.

[0012] Furthermore, set screws are provided on the side of the two supports that are far apart from each other and on the positioning sleeve.

[0013] Furthermore, both of the support bases are provided with reinforcing ribs on their side walls.

[0014] This invention addresses the shortcomings of existing support devices in the prior art—namely, insufficient versatility and inability to adapt to different transport vehicle heights—through targeted design of horizontal and vertical adjustment and stable support structures. It also enhances stability under heavy loads, with the following specific beneficial effects: 1. Addressing the limitations of existing devices in the background technology, which rely solely on shackle fixing and can only adapt to specific tank types, failing to dynamically adjust the center of gravity according to different tank types or load changes, this device achieves dynamic center of gravity adaptation through a horizontal spacing adjustment mechanism and a sliding support base. A sliding groove is formed along the length of the base plate, allowing one support base to slide along the groove. Combined with the transmission structure of the first screw and the first handwheel, the operator only needs to insert a rocker arm and rotate the first handwheel to adjust the spacing of the movable support base (adapting to different center of gravity requirements within common transport vehicle compartments of 4500-5500m). The positioning sleeve and positioning plate assembly ensure that the movable support base remains parallel to the fixed support base during sliding, preventing support offset. After adjustment, the support base position is locked by a set screw, stably adapting to the upper structure of aluminum electrolysis cells of different weights and tank types (such as 500kA and other specifications) ranging from 35-70 tons. It can handle center of gravity offset caused by eccentric loads (such as a 10-ton inclined column busbar) without requiring device replacement, breaking the limitation of existing devices adapting to a single tank type and significantly improving versatility.

[0015] 2. Addressing the shortcomings of existing devices in the background technology, which lack a height adjustment structure and are prone to impact or tilting risks when facing transport vehicles of different heights, this device achieves height adaptation through a height adjustment mechanism and a support plate. A vertical groove is formed on the side wall of the support base, and the vertical sliding section of the support plate is embedded in the support base's limiting groove. In conjunction with the transmission of the second screw, transmission block, and second handwheel, rotating the second handwheel moves the support plate up and down along the vertical groove, with an adjustment range of 300-600mm (adapting to transport vehicles of different heights). When the upper structure is lowered, it matches the height of the vehicle, avoiding impact collisions caused by height differences in existing technologies, while eliminating the risk of tilting and achieving stable lowering and transport. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a rear view of the present invention.

[0017] In the diagram: 1. Base plate; 2. Support base; 3. Support plate; 4. Slide groove; 5. First screw; 6. First handwheel; 7. Vertical groove; 8. Limiting plate; 9. Second screw; 10. Transmission block; 11. Second handwheel; 12. Positioning sleeve; 13. Positioning plate; 14. Set screw; 15. Reinforcing rib. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Figure 1-2As shown, this utility model discloses a transport support device for the upper structure of an aluminum electrolytic cell. It is suitable for transporting the upper structure of an aluminum electrolytic cell after maintenance and disassembly or before the installation of a new upper structure. The core functionality involves adjusting the position of one of the support seats 2 using a horizontal spacing adjustment mechanism and adjusting the height of the support plate 3 using a height adjustment mechanism. This achieves precise support and height adaptation for the center of gravity of the upper structure of the aluminum electrolytic cell, ensuring stability during transport. The device consists of a base plate 1, two support seats 2, two support plates 3, a horizontal spacing adjustment mechanism, a height adjustment mechanism, positioning components (positioning sleeve 12, positioning plate 13), a set screw 14, and reinforcing ribs 15, as detailed below: The base plate 1 is made of Q235B carbon structural steel with a tensile strength ≥375MPa, balancing load-bearing capacity and weldability, and can support the upper structure of an aluminum electrolysis cell weighing 5-8 tons. Its length is 5000mm (suitable for common transport vehicle bodies of 4500-5500mm), width is 1200mm (matching the lateral space of the vehicle body), and thickness is 20mm (to prevent deformation under stress). It is fixed to the transport vehicle body base plate using 12 sets of M16×40 high-strength bolts (grade 4.8), with the bolts evenly distributed in 3 rows (4 sets per row) along the length of base plate 1, spaced 500mm apart; the bolt hole diameter is 17mm (with a 1mm installation gap), and the hole edge is ≥50mm from the edge of base plate 1 to prevent edge cracking.

[0019] Both support seats 2 are made of Q235B steel plates welded into a rectangular frame structure to avoid excessive weight from a solid structure. The overall height is 800mm, width is 500mm, and frame sidewall thickness is 15mm. One support seat 2 has a T-shaped sliding part at the bottom (200mm wide, 300mm long), with a surface roughness of Ra1.6 at the bottom to reduce sliding friction. Both support seats 2 are located above the base plate 1. One support seat 2 is fixed near the rear of the carriage, with its bottom fully welded to the base plate 1 (weld height 10mm, continuously distributed along the bottom edge), serving as a fixed support seat. The other support seat 2 with a T-shaped sliding part is located near the front of the carriage, with its bottom sliding part embedded in the T-shaped groove 4 of the base plate 1, allowing it to slide along the length of the groove 4, serving as a movable support seat.

[0020] The support plate 3 is made of Q235B steel plate, integrally stamped (without welding deformation), and coated with a 60μm thick epoxy resin anti-rust layer to prevent electrolyte corrosion. A 5mm thick nitrile rubber pad (Shore hardness 60±5) is attached to the upper surface to increase friction with the upper structure. The support plate 3 is T-shaped, with a horizontal bearing section (in contact with the upper structure) and a vertical sliding section (bottom) connected to the bottom of the horizontal bearing section. The horizontal bearing section is 600mm long, 200mm wide, and 12mm thick; the vertical sliding section is 300mm long, 100mm wide, and 12mm thick. The vertical sliding sections of the two support plates 3 are respectively embedded in the limiting grooves opened on the upper part of the two support seats 2, with a 2mm gap between the vertical sliding section and the inner wall of the limiting groove (to ensure smooth sliding). One side of the vertical sliding section is fully welded to the transmission block 10 (weld height 8mm, length 100mm), and after welding, it is subjected to stress relief treatment at 200℃ for 2 hours.

[0021] The horizontal spacing adjustment mechanism is used to drive the movable support 2 to move along the length of the base plate 1, and includes a first screw 5 and a first handwheel 6. The first screw 5 is made of 45 steel with heat treatment (hardness 220-250HB) to ensure thread strength and wear resistance; its diameter is 50mm, its length is 3000mm (matching the length of the slide groove 4), its thread specification is M50×3 (coarse thread, high transmission efficiency), and its thread accuracy is 7H; it is rotatably connected to the slide groove 4 through two 6210 type deep groove ball bearings (inner diameter 50mm, outer diameter 90mm, width 20mm), the outer ring of the bearing is interference-fitted with the Q235B steel bearing seats at both ends of the slide groove 4 (H7 / js6), and the bearing seats are fixed to the base plate 1 by M12×30 bolts; one end of the first screw 5 extends out of the slide groove 4 and is connected to the first handwheel 6 through an 8×20 type flat key (key width 8mm, key length 20mm), the keyway depth is 10mm. The first handwheel 6 is made of 45 steel with a blackened surface treatment (for rust prevention); it is disc-shaped (150mm in diameter and 20mm in thickness), with 6 evenly spaced operating holes of 18mm in diameter and 25mm in depth on the edge (for easy insertion of the joystick); after assembly, it is evenly fixed by 3 weld points of 8mm in diameter to prevent relative slippage.

[0022] The height adjustment mechanism is used to drive the two support plates 3 to move vertically along the support base 2, and includes a vertical groove 7, a limiting plate 8, a second screw 9, a transmission block 10, and a second handwheel (11), wherein: The vertical groove 7 is opened on the upper part of the side wall of the two support seats 2 that are far apart from each other, and extends along the height direction of the support seat 2; its width is 102mm (to match the thickness of the transmission block 10) and its height is 600mm (to meet the 300-600mm adjustment stroke of the support plate), and the surface roughness of the groove wall is Ra3.2 (to avoid scratching the transmission block).

[0023] The limiting plate 8 is made of Q235B steel plate; it is 300mm long, 100mm wide, and 12mm thick, with a bearing mounting hole of 80mm diameter (H7 tolerance) in the center; two limiting plates 8 are vertically welded on the side wall of each support seat 2 (located above and below the vertical groove 7, 50mm from the top and 50mm from the bottom of the vertical groove 7), fully welded (weld height 8mm), and the flatness error after welding is ≤0.5mm / m.

[0024] The second screw 9 is made of 45 steel with heat treatment (hardness 220-250HB); its diameter is 40mm, its length is 600mm (matching the height of the vertical groove 7), its thread specification is M40×2 (fine thread, high adjustment accuracy), and its thread accuracy is 7H; it is rotatably connected to the bearing holes of the two limiting plates 8 through a 6208 type deep groove ball bearing (inner diameter 40mm, outer diameter 80mm, width 18mm), the inner ring of the bearing is interference-fitted with the second screw 9 (H7 / k6), and the outer ring is interference-fitted with the bearing hole of the limiting plate 8 (H7 / js6); the transmission block 10 is located between the two limiting plates 8 and is threadedly engaged with the second screw 9.

[0025] The transmission block 10 is made of Q235B steel plate; it is 200mm long, 100mm wide, and 10mm thick, with an M40×2 internal thread hole in the center; one end is fully welded to the vertical sliding section of the support plate 3, and the other end extends to the outside of the vertical groove 7, with a gap of 2mm between it and the inner wall of the vertical groove 7 (allowing for vertical sliding).

[0026] The second handwheel 11 is made of 45 steel with a blackened surface. It is also disc-shaped (120mm in diameter and 18mm in thickness), with four evenly spaced operating holes of 16mm in diameter and 20mm in depth on the edge. It is connected to the upper end of the second screw 9 via a 6×16 type flat key (6mm wide and 16mm long), with a keyway depth of 8mm. After assembly, it is fixed by two symmetrical welding points.

[0027] The positioning assembly includes a positioning sleeve 12 and a positioning plate 13. The positioning sleeve 12 is made of Q235B seamless steel pipe; its inner diameter is 152mm, outer diameter is 160mm, length is 500mm, and the surface roughness of the inner wall is Ra3.2; one end is vertically welded to the middle of the side wall of the fixed support 2 (400mm from the bottom of the support), and is fully welded (weld height is 10mm, continuously distributed along the circumference of the sleeve). After welding, the axis of the sleeve is parallel to the length direction of the base plate 1, and the coaxiality error is ≤0.5mm / m. The positioning plate 13 is made of Q235B steel plate; it is 600mm long, 150mm wide, and 10mm thick. One end of the plate is rounded (5mm radius for easy insertion) and inserted into the positioning sleeve 12. The other end is vertically welded to the middle of the side wall of the movable support 2 (at the same height as the positioning sleeve 12) and fully welded. The other end is inserted into the positioning sleeve 12 with a 2mm gap from the inner wall of the sleeve. It slides along the sleeve axis as the movable support 2 moves to ensure that the two support seats 2 are parallel.

[0028] The set screw 14 is made of 45 steel with quenching treatment (hardness HRC40-45) and galvanized surface (thickness 10μm) for rust prevention; the specification is M20×50 (thread length 30mm, smooth rod length 20mm), and the end is provided with a 1mm deep anti-slip texture; each support seat 2 has 2 set screws on the side walls that are far apart from each other (symmetrical left and right), the threaded hole is perpendicular to the side wall of the support seat 2 (tapping depth 30mm, M20 specification), after screwing in, the end can be tightened to the movable support seat and the fixed support seat, locking the position of the two support plates 3; the upper side of the positioning sleeve 12 has two set screws (tapping depth 25mm, M20 specification), after screwing in, the end can be tightened to the positioning plate 13, enhancing the stability of the support seat 2.

[0029] The reinforcing rib 15 is made of Q235B steel plate stamped into a right-angled triangle; the right-angled side is 200mm long and 10mm thick, and the bevel is polished smooth (to prevent scratches); each support base has a set of reinforcing ribs on its two side walls (two on each side).

[0030] Taking the need for maintenance and relocation of the upper structure of an aluminum electrolysis cell as an example, the specific operating steps are as follows: 1. Confirm the weight of the upper structure (assuming 5 tons) and the position of the center of gravity (assuming 1.2m from the end). Clean the surface of the device of debris, loosen all the set screws 14, and test the smoothness of the sliding of the level / height adjustment mechanism. Insert the rocker arm into the operating hole of the first handwheel 6, turn the rocker arm to drive the first screw 5 to rotate, so that the movable support 2 moves along the slide groove 4. Adjust the distance between the two support 2 to 1.6m (ensure that the center of gravity is located between the two support 2). Tighten the set screws 14 on the side wall of the movable support 2 (torque 50N·m, not shown in the figure) to tighten the slide groove 4. Tighten the set screws 14 on the positioning sleeve 12 (torque 45N·m) to tighten the positioning plate 13 and lock the position of the movable support 2.

[0031] 2. Insert the rocker arm into the operating hole of the second handwheel 11, turn the rocker arm to drive the second screw 9 to rotate, so that the transmission block 10 drives the support plate 3 to move along the vertical groove 7, and adjust the top height of the support plate 3 to 1.2m (to adapt to the height limit of the carriage); tighten the set screw 14 (torque 50N・m) on the side wall of the support seat 2 to tighten the transmission block 10 and lock the height of the support plate (3); it is necessary to ensure that the heights of the two support plates 3 are consistent.

[0032] 3. Use a crane to smoothly lift the upper structure onto the two support plates 3, ensuring that the center of gravity coincides with the line connecting the two support seats 2, and check the tightness of the contact; install rubber anti-slip pads between the upper structure and the support seats 2, and use 12mm diameter steel wire ropes to bind the upper structure and the support seats 2 (4 binding points are symmetrically distributed), check the tightness of the top screw 14 again, and start the transport vehicle after confirming that there are no problems.

[0033] 4. Upon arrival at the destination, loosen the wire rope and anti-slip pad, use a crane to lift the upper structure, loosen the top screw 14, and adjust the support seat 2 and support plate 3 to their original positions for future use.

Claims

1. A transport support device for the upper structure of an aluminum electrolytic cell, comprising a floor plate (1) disposed in the cargo compartment of a transport vehicle, two support seats (2) disposed on the floor plate (1), and a support plate (3) disposed on the support seats (2), characterized in that, It also includes a horizontal spacing adjustment mechanism on the base plate (1) and a height adjustment mechanism on the support seat (2); the horizontal spacing adjustment mechanism is connected to one of the support seats (2) to drive the support seat (2) to move along the length direction of the base plate (1), and the height adjustment mechanism is connected to the support plate (3) to drive the two support plates (3) to move along the vertical direction of the support seat (2).

2. The support device as described in claim 1, characterized in that, The base plate (1) has a groove (4) along its length, and one of the support seats (2) is located in the groove (4) and is slidably connected to the groove (4).

3. The support device as described in claim 2, characterized in that, The horizontal spacing adjustment mechanism includes a first screw (5) rotatably connected in the slide groove (4) and a first handwheel (6) located at the end of the first screw (5); the first screw (5) is threadedly engaged with one of the support seats (2).

4. The support device as described in claim 2, characterized in that, The height adjustment mechanism includes a vertical groove (7) opened on the opposite side of the two support seats (2), an upper limit plate (8) horizontally arranged on the opposite side of the two support seats (2), and a second screw (9) vertically rotatably connected to the upper limit plate (8); the upper part of the support seat (2) is provided with a limit groove communicating with the vertical groove (7), the support plate (3) is T-shaped as a whole and its bottom is located in the limit groove and slides with the limit groove, a transmission block (10) is provided on one side of the bottom of the support plate (3), the transmission block (10) extends to the outside of the vertical groove (7) and slides vertically with the vertical groove (7), the second screw (9) is threadedly connected to the transmission block (10), and a second handwheel (11) is provided at the end of the second screw (9).

5. The support device as described in claim 4, characterized in that, The two support bases (2) are respectively connected to a positioning sleeve (12) and a positioning plate (13) on the side that is close to each other. The positioning plate (13) is located inside the positioning sleeve (12) and can slide inside the positioning sleeve (12).

6. The support device as described in claim 5, characterized in that, A set screw (14) is provided on the side of the two support seats (2) that are far apart from each other and on the positioning sleeve (12).

7. The support device as described in claim 1, characterized in that, The two support bases (2) are provided with reinforcing ribs (15) on their side walls.

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