Heavy-load transfer equipment capable of preventing deformation under heavy load

Abstract

This application discloses a heavy-duty transfer device to prevent flexural deformation under heavy loads, relating to the field of material transfer equipment technology. The heavy-duty transfer device includes a frame, a lower support platform, an upper support platform, and multiple floating pressure-bearing components. The frame is equipped with a moving guide rail; the bottom of the lower support platform is equipped with a set of wheels that roll in cooperation with the moving guide rail; multiple floating pressure-bearing components are spaced apart between the upper support platform and the lower support platform. Each floating pressure-bearing component includes a lower support fixed to the lower support platform and a sliding seat with a second sliding mating surface on its upper part. The second sliding mating surface slides horizontally against the first sliding mating surface of the lower support platform. The arc-shaped protrusion at the upper end of the sliding seat bears pressure and movably engages with the arc-shaped groove at the bottom of the upper support platform. A limiting component with a horizontal clearance is also provided between the lower support platform and the upper support platform. This application can adapt to the angular sway and horizontal displacement generated by the upper support platform, reducing the rigid transmission of deformation to the bottom.

Description

Technical Field

[0001] This application relates to the field of material handling equipment, and in particular to a heavy-duty handling equipment that is resistant to bending deformation under heavy loads. Background Technology

[0002] In annealing furnaces, heat treatment furnaces, and other heavy-duty material handling scenarios, heavy-duty transfer equipment is typically used to move racks, pallets, coils, or other heavy materials into or out of target workstations. Existing heavy-duty transfer equipment generally includes a frame, a track mounted on the frame, and a mobile trolley that can move along the track. The bottom of the mobile trolley is equipped with wheels, which work in conjunction with the track to transfer heavy materials.

[0003] The mobile material cart and the wheel assembly are typically connected as a rigid unit through welding, bolting, or an integral frame. This type of structure is easy to manufacture and can meet the load-bearing requirements under normal working conditions.

[0004] However, in practical applications, the materials carried on the mobile trolley are often large, heavy-duty objects such as pallets or aluminum coils. To enable the mobile trolley to stably support more materials, it typically needs a large width, resulting in extended load-bearing sections on both sides. Under heavy loads, uneven loading, start-stop impacts, or high-temperature environments, these extended load-bearing sections are prone to localized deflection, torsional deformation, or tilting. Since the mobile trolley is rigidly connected to the wheel assembly, the localized deflection of the extended load-bearing sections generates bending torque that is directly transmitted downwards, forcing the lower wheel assembly mounting base to tilt in tandem. This causes the wheel axle of the wheel assembly to deflect, thereby disrupting the smooth, flush contact between the wheel tread and the track surface. Summary of the Invention

[0005] To address the problems of existing mobile material carts, when carrying large, heavy materials, the rigid connection between the upper load-bearing structure and the lower traveling structure easily leads to localized deflection, torsional deformation, and posture deviation, resulting in uneven stress on the traveling wheel assembly, wheel axle deflection, and uneven track contact. This application provides a heavy-duty transfer device that prevents heavy-load deflection deformation, comprising: The frame is equipped with a movable guide rail; The lower support platform has a set of traveling wheels at its bottom that roll in cooperation with the moving guide rail. An upper support platform is positioned above the lower support platform; Multiple floating pressure-bearing components are spaced apart between the upper support platform and the lower support platform; Each of the floating pressure-bearing components includes a lower support and a sliding seat. The lower support is fixedly mounted on the lower support platform and has a first sliding mating surface. The sliding seat is located above the lower support and has a second sliding mating surface that fits against the first sliding mating surface. The second sliding mating surface slides against the first sliding mating surface in a horizontal direction. The upper end of the sliding seat is provided with an arc-shaped protrusion, and the bottom of the upper support platform is provided with an arc-shaped groove that matches the arc-shaped protrusion. The arc-shaped protrusion supports and is movably fitted in the arc-shaped groove. A limiting component is also provided between the lower support platform and the upper support platform. The limiting component includes a first limiting part and a second limiting part. One of the lower support platform and the upper support platform is provided with the first limiting part, and the other is provided with the second limiting part. The first limiting part extends at least partially into the second limiting part, and a horizontal clearance gap is formed between the outer side of the first limiting part and the inner side of the second limiting part.

[0006] Through the above technical solution, when the upper bearing platform bears heavy materials, the floating pressure-bearing component can form a non-rigid pressure-bearing connection between the upper bearing platform and the lower support platform. Specifically, the sliding fit between the first and second sliding mating surfaces can accommodate the slight horizontal displacement of the upper bearing platform relative to the lower support platform, while the movable fit between the arc-shaped protrusion and the arc-shaped groove can accommodate the angular sway of the upper bearing platform relative to the sliding seat. The limiting component can limit excessive horizontal displacement of the upper bearing platform relative to the lower support platform while preserving horizontal clearance space. Therefore, it can reduce the rigid transmission of flexural deformation of the upper bearing platform caused by heavy loads, uneven loads, or high-temperature environments to the lower support platform and the traveling wheel assembly, allowing the traveling wheel assembly to maintain a more stable track contact posture and reducing the risks of rail wear, uneven wear, jamming, and unstable operation.

[0007] Furthermore, each of the floating pressure-bearing components also includes an anti-detachment limiting member, which is vertically inserted through the upper support platform and fixedly connected to the sliding seat; the upper support platform is provided with a through hole for the anti-detachment limiting member to pass through, the diameter of the through hole is larger than the outer diameter of the rod of the anti-detachment limiting member, and there is a radial clearance between the outer peripheral surface of the rod of the anti-detachment limiting member and the wall of the through hole; the upper end of the anti-detachment limiting member is provided with a limiting head, and there is an axial clearance between the limiting head and the upper surface of the upper support platform or the stepped surface in the through hole.

[0008] Furthermore, a high-temperature resistant solid self-lubricating pad is provided between the arc-shaped protrusion and the arc-shaped groove; the high-temperature resistant solid self-lubricating pad is attached to the outer arc surface of the arc-shaped protrusion and / or the inner arc surface of the arc-shaped groove, and the arc-shaped protrusion is pressure-fitted with the arc-shaped groove through the high-temperature resistant solid self-lubricating pad.

[0009] Furthermore, the first limiting part is a positioning pin, and the second limiting part is a limiting hole; one of the lower support platform and the upper bearing platform is fixedly provided with the positioning pin, and the other is provided with the limiting hole; the positioning pin is inserted into the limiting hole, the diameter of the limiting hole is larger than the outer diameter of the positioning pin, and an annular horizontal clearance is formed between the outer peripheral surface of the positioning pin and the hole wall of the limiting hole; the radial width of one side of the annular horizontal clearance is greater than the horizontal sliding stroke of the sliding seat relative to the lower support.

[0010] Furthermore, both the first sliding mating surface and the second sliding mating surface are horizontal planes; the area of ​​the first sliding mating surface is larger than the area of ​​the second sliding mating surface; when the sliding seat reaches a preset maximum horizontal sliding stroke relative to the lower support, the horizontal projection of the second sliding mating surface is located within the horizontal projection area of ​​the first sliding mating surface.

[0011] Furthermore, a first wear-resistant sliding plate is fixedly provided on the lower support, and a second wear-resistant sliding plate is fixedly provided on the bottom of the sliding seat; the top surface of the first wear-resistant sliding plate forms the first sliding mating surface, and the bottom surface of the second wear-resistant sliding plate forms the second sliding mating surface; an oil storage groove is provided on the first sliding mating surface.

[0012] Furthermore, the upper end face of the sliding seat has a first clearance surface located around the arc-shaped protrusion; the bottom surface of the upper bearing platform has a second clearance surface located around the arc-shaped groove; when the arc-shaped protrusion and the arc-shaped groove are in pressure-bearing engagement, the first clearance surface and the second clearance surface are vertically opposite each other, and a vertical anti-adhesion gap is left between the first clearance surface and the second clearance surface.

[0013] Furthermore, the upper support platform has a larger dimension in the width direction than the lower support platform; the two sides of the upper support platform extend beyond the corresponding sides of the lower support platform in the width direction to form an extended support area. Multiple floating pressure-bearing components are arranged at intervals along the length and width directions of the lower support platform, and at least some of the floating pressure-bearing components are arranged adjacent to the side of the lower support platform along the width direction to support the extended load-bearing area.

[0014] Furthermore, the moving guide rail includes a material cart guide rail assembly and a traction vehicle guide rail assembly; the material cart guide rail assembly is mounted on the frame and rolls in cooperation with the traveling wheel assembly at the bottom of the lower support platform; the traction vehicle guide rail assembly and the material cart guide rail assembly are spaced apart.

[0015] Furthermore, it also includes a tractor; the tractor is movably mounted on the tractor guide rail assembly; the lower support platform is provided with a traction force receiving part, and the tractor is provided with a traction connection part that cooperates with the traction force receiving part; When the traction connection part cooperates with the traction force receiving part, the traction vehicle drives the lower support platform to move along the material car guide rail assembly.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting multiple floating pressure-bearing components between the upper bearing platform and the lower support platform, and making each floating pressure-bearing component include a lower support, a sliding seat, a first sliding mating surface, a second sliding mating surface, an arc-shaped protrusion, and an arc-shaped groove, the upper bearing platform and the lower support platform no longer form a completely rigid integral connection. Among them, the horizontal sliding fit between the first sliding mating surface and the second sliding mating surface can release the horizontal displacement component of the upper bearing platform caused by heavy load, off-center load, or thermal deformation. The arc surface fit between the arc-shaped protrusion and the arc-shaped groove can adapt to the angular sway caused by the local deflection or torsion of the upper bearing platform, thereby reducing the degree of rigid transmission of the bending deformation, torsional deformation, and attitude deviation of the upper bearing platform to the lower support platform, and reducing the risk of wheel axle deflection, local overload, rail wear, and increased running resistance caused by the linkage deformation of the lower support platform of the traveling wheel set.

[0017] 2. By setting a limiting component between the lower support platform and the upper bearing platform, and ensuring that the first limiting part at least partially extends into the second limiting part, and that a horizontal clearance is formed between the outer side of the first limiting part and the inner side of the second limiting part, the upper bearing platform can generate a horizontal micro-displacement within a preset range relative to the lower support platform under normal load, thermal expansion, or off-center load conditions, without being prematurely locked by the limiting component. At the same time, when the horizontal displacement of the upper bearing platform relative to the lower support platform exceeds the allowable range of the horizontal clearance, the first limiting part can form an abutment limit with the second limiting part, thereby limiting the upper bearing platform from continuing to undergo excessive horizontal misalignment, taking into account both the adaptive clearance capability of the floating pressure-bearing component and the overall positional safety of the upper bearing platform relative to the lower support platform.

[0018] 3. By incorporating anti-detachment limiting components, high-temperature resistant solid self-lubricating pads, a first wear-resistant sliding plate, a second wear-resistant sliding plate, and an oil reservoir, the floating pressure-bearing assembly possesses anti-detachment, wear resistance, lubrication, and high-temperature adaptability capabilities during long-term heavy-load operation. Specifically, the anti-detachment limiting components prevent interference with the normal micro-displacement and sway of the upper bearing platform through radial and axial clearances, and limit the upper bearing platform from detaching from the sliding seat under vibration or impact conditions. The high-temperature resistant solid self-lubricating pad reduces frictional wear between the arc-shaped protrusions and arc-shaped grooves. The first wear-resistant sliding plate, the second wear-resistant sliding plate, and the oil reservoir improve the sliding lubrication conditions between the first and second sliding mating surfaces, thereby reducing the probability of wear, jamming, and failure of the floating pressure-bearing assembly under heavy-load, high-temperature, and reciprocating movement conditions, and improving the operational stability and maintenance convenience of the heavy-load transfer equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the heavy-duty transfer equipment for preventing heavy-load flexural deformation according to this application. Figure 2 This is a top view of the heavy-duty transfer equipment designed to prevent flexural deformation under heavy loads, as described in this application. Figure 3 This is a cross-sectional view of the floating pressure-bearing component of this application; Figure 4 This is a cross-sectional view of the limiting component of this application; Figure 5 This is a three-dimensional structural diagram of the heavy-duty transfer equipment of this application after the upper support platform has been removed. Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0020] Explanation of reference numerals in the attached figures: 10. Frame; 11. Moving guide rail; 1101. Material cart guide rail assembly; 1102. Traction vehicle guide rail assembly; 20. Lower support platform; 21. Walking wheel assembly; 22. Traction bearing part; 30. Upper bearing platform; 31. Arc-shaped groove; 32. Through hole; 33. Second clearance surface; 34. Outwardly expanded bearing area; 40. Floating pressure bearing component; 41. Lower support; 411. First sliding mating surface; 412. First Wear-resistant sliding plate; 413, oil reservoir; 42, sliding seat; 421, second sliding mating surface; 422, arc-shaped protrusion; 423, second wear-resistant sliding plate; 424, first clearance surface; 44, high-temperature resistant solid self-lubricating pad; 50, limiting component; 51, first limiting part; 52, second limiting part; 60, anti-detachment limiting component; 61, rod part; 62, limiting head; 70, tractor; 71, traction connection part. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are only used to illustrate the technical solution of the present application and are not intended to limit the scope of protection of the present application.

[0022] For ease of explanation, in this embodiment, the direction of movement of the heavy-duty transfer equipment is defined as the length direction.

[0023] like Figures 1 to 6 As shown, this embodiment provides a heavy-duty transfer device that prevents bending deformation under heavy loads. It can be applied to annealing furnaces, heat treatment furnaces, coil transfer lines, pallet conveyor lines, or other heavy-duty material transfer scenarios. The heavy-duty transfer device includes a frame 10, a moving guide rail 11, a lower support platform 20, an upper bearing platform 30, and multiple floating pressure-bearing components 40.

[0024] The frame 10 is used to form the basic support for the equipment. The movable guide rail 11 is set on the frame 10. The lower support platform 20 is set above the movable guide rail 11. The bottom of the lower support platform 20 is provided with a set of traveling wheels 21. The set of traveling wheels 21 rolls with the movable guide rail 11, so that the lower support platform 20 can move back and forth along the movable guide rail 11.

[0025] An upper support platform 30 is positioned above the lower support platform 20 and is used to support material racks, pallets, aluminum coils, rolls, or other heavy-duty materials. Multiple floating pressure-bearing components 40 are spaced apart between the upper support platform 30 and the lower support platform 20. These floating pressure-bearing components 40 form a pressure-bearing support between the upper support platform 30 and the lower support platform 20, allowing the upper support platform 30 to be supported on the lower support platform 20 by the multiple floating pressure-bearing components 40.

[0026] In practical use, the materials carried by the upper support platform 30 are usually heavy and large in size. When the heavy-load material is placed off-center, or when the equipment is impacted during start-up and shutdown, or when the equipment is in a high-temperature environment such as an annealing furnace or heat treatment furnace, the upper support platform 30 may experience local deflection, torsional deformation, or tilting. If the upper support platform 30 and the lower support platform 20 are rigidly connected, the local deformation of the upper support platform 30 can easily be transmitted downward to the traveling wheel set 21 through the rigid structure, causing the wheel axle of the traveling wheel set 21 to tilt, which in turn leads to the disruption of the contact posture between the traveling wheel set 21 and the moving guide rail 11.

[0027] In this embodiment, the upper support platform 30 and the lower support platform 20 are set separately, and multiple floating pressure-bearing components 40 are set between them. This allows the floating pressure-bearing components 40 to adapt to the local deflection, torsion or posture deviation of the upper support platform 30 under heavy load or eccentric load, thereby reducing the rigid transmission of the deflection deformation of the upper support platform 30 to the lower support platform 20 and the walking wheel set 21.

[0028] Furthermore, each floating pressure-bearing assembly 40 includes a lower support 41 and a sliding seat 42. The lower support 41 is fixed to the lower support platform 20. The lower support 41 can be installed on the lower support platform 20 by bolt connection, welding, locating pin connection or other fixed connection methods. The lower support 41 is provided with a first sliding mating surface 411. The sliding seat 42 is disposed above the lower support 41. The sliding seat 42 is provided with a second sliding mating surface 421 that fits against the first sliding mating surface 411. The second sliding mating surface 421 slides horizontally against the first sliding mating surface 411, so that the sliding seat 42 can slide horizontally relative to the lower support 41.

[0029] The upper end of the sliding seat 42 is provided with an arc-shaped protrusion 422. The bottom of the upper support platform 30 is provided with an arc-shaped groove 31 that mates with the arc-shaped protrusion 422. The arc-shaped protrusion 422 is accommodated within the arc-shaped groove 31, and the outer arc surface of the arc-shaped protrusion 422 fits against the inner arc surface of the arc-shaped groove 31. Thus, the upper support platform 30 and the sliding seat 42 form an arc-shaped bearing fit through the arc-shaped protrusion 422 and the arc-shaped groove 31.

[0030] In one embodiment, the arc-shaped protrusion 422 can be a spherical protrusion, a circular arc protrusion, or other protrusion structures with an arc-shaped bearing surface; the arc-shaped groove 31 can be a spherical groove, a circular arc groove, or other arc-shaped bearing groove that matches the arc-shaped protrusion 422. The arc-shaped fit between the arc-shaped protrusion 422 and the arc-shaped groove 31 can accommodate minor changes in the posture of the upper support platform 30 while bearing vertical loads.

[0031] The first sliding mating surface 411 and the second sliding mating surface 421 form a horizontal sliding pair, and the arc-shaped protrusion 422 and the arc-shaped groove 31 form an arc-shaped bearing fit. The horizontal sliding pair is used to accommodate the horizontal displacement component of the upper bearing platform 30 due to heavy load deflection, eccentric load, or thermal deformation, while the arc-shaped bearing fit is used to accommodate the angular wobble of the upper bearing platform 30 relative to the sliding seat 42 due to local downward deflection or torsion. The two work together to prevent the deformation of the upper bearing platform 30 from being directly and rigidly transmitted to the lower support platform 20.

[0032] Multiple floating load-bearing components 40 can be arranged at intervals along the length and width of the lower support platform 20. When different areas of the upper support platform 30 bear different loads and undergo local deformation, each floating load-bearing component 40 can slide horizontally and adapt to the arc surface at its corresponding support position, thereby improving the overall load-bearing stability.

[0033] The heavy-duty transfer equipment also includes a limiting component 50. The limiting component 50 is located between the lower support platform 20 and the upper bearing platform 30.

[0034] The limiting component 50 includes a first limiting part 51 and a second limiting part 52. One of the lower support platform 20 and the upper bearing platform 30 is provided with the first limiting part 51, and the other is provided with the second limiting part 52. The first limiting part 51 extends at least partially into the second limiting part 52, and a horizontal clearance gap is formed between the outer surface of the first limiting part 51 and the inner surface of the second limiting part 52.

[0035] The horizontal clearance is used to allow the upper bearing platform 30 to have a slight horizontal displacement relative to the lower support platform 20 within a normal range. When the upper bearing platform 30 experiences a slight horizontal slippage through the floating pressure-bearing assembly 40 due to heavy load, off-center load, or thermal deformation, the first limiting part 51 will not immediately form a rigid abutment with the second limiting part 52, thus preventing premature restriction of the normal operation of the floating pressure-bearing assembly 40.

[0036] When the horizontal displacement of the upper support platform 30 relative to the lower support platform 20 exceeds a preset range, the first limiting part 51 can abut against the second limiting part 52, thereby limiting the upper support platform 30 from continuing to undergo excessive horizontal misalignment. Therefore, the limiting component 50 is not a structure used to rigidly lock the upper support platform 30 and the lower support platform 20, but a safety limiting structure with a horizontal clearance.

[0037] In one specific embodiment, the first limiting part 51 is a positioning pin, and the second limiting part 52 is a limiting hole. The positioning pin is fixedly installed on one of the lower support platform 20 and the upper bearing platform 30, while the limiting hole is provided on the other. The positioning pin is inserted into the limiting hole, the diameter of the limiting hole is larger than the outer diameter of the positioning pin, and an annular horizontal clearance gap is formed between the outer circumferential surface of the positioning pin and the wall of the limiting hole.

[0038] The radial width of one side of the annular horizontal clearance is greater than the horizontal sliding stroke of the sliding seat 42 relative to the lower support 41. Therefore, when the sliding seat 42 slides horizontally relative to the lower support 41, the locating pin will not prematurely abut against the wall of the limiting hole, thus ensuring that the floating pressure-bearing assembly 40 can release horizontal displacement normally.

[0039] In other embodiments, the positioning pin can be fixedly mounted on the upper support platform 30, and the limiting hole can be mounted on the lower support platform 20. As long as a horizontal clearance can be formed between the positioning pin and the limiting hole to avoid normal floating displacement, the same limiting effect can be achieved.

[0040] Furthermore, each floating pressure-bearing assembly 40 may also include an anti-detachment limiting member 60. The anti-detachment limiting member 60 is vertically inserted through the upper support platform 30 and fixedly connected to the sliding seat 42.

[0041] The upper support platform 30 is provided with a through hole 32 for the anti-detachment limiting member 60 to pass through. The anti-detachment limiting member 60 includes a rod 61 and a limiting head 62 disposed at the upper end of the rod 61. After passing through the through hole 32, the rod 61 is fixedly connected to the sliding seat 42. This fixed connection can be a threaded connection, welding, pin connection or other connection methods.

[0042] The diameter of the through hole 32 is larger than the outer diameter of the rod portion 61 of the anti-detachment limiting member 60, and there is a radial clearance between the outer peripheral surface of the rod portion 61 and the hole wall of the through hole 32. There is an axial clearance between the limiting head 62 and the upper surface of the upper support platform 30. Alternatively, when a stepped surface is provided in the through hole 32, there is an axial clearance between the limiting head 62 and the stepped surface.

[0043] The radial clearance allows the upper bearing platform 30 to undergo slight horizontal displacement or angular sway relative to the sliding seat 42 without rigidly interfering with the wall of the through hole 32. The axial clearance allows the upper bearing platform 30 to have a certain vertical relative movement space during normal pressure-bearing sway.

[0044] When the upper support platform 30 tends to detach from the sliding seat 42 due to vibration, impact, or abnormal working conditions, the limiting head 62 can abut against the upper surface of the upper support platform 30 or the stepped surface inside the through hole 32, thereby preventing the upper support platform 30 from detaching from the sliding seat 42. Therefore, the anti-detachment limiting member 60 can achieve anti-detachment protection without affecting the normal angular wobble and horizontal micro-displacement of the upper support platform 30 relative to the sliding seat 42.

[0045] Furthermore, a high-temperature resistant solid self-lubricating gasket 44 can be provided between the arc-shaped protrusion 422 and the arc-shaped groove 31. The high-temperature resistant solid self-lubricating gasket 44 can be attached to the outer arc surface of the arc-shaped protrusion 422, the inner arc surface of the arc-shaped groove 31, or both. The arc-shaped protrusion 422 and the arc-shaped groove 31 are press-fitted together by the high-temperature resistant solid self-lubricating gasket 44.

[0046] The high-temperature resistant solid self-lubricating gasket 44 is used to reduce the frictional resistance between the arc-shaped protrusion 422 and the arc-shaped groove 31, thereby reducing wear and jamming under high-temperature and heavy-load conditions. The high-temperature resistant solid self-lubricating gasket 44 can be made of graphite-based self-lubricating materials, molybdenum disulfide composite materials, copper-based embedded solid lubricating materials, or other self-lubricating materials that can adapt to high-temperature and pressure-bearing conditions.

[0047] In one specific embodiment, both the first sliding mating surface 411 and the second sliding mating surface 421 are horizontal planes. The area of ​​the first sliding mating surface 411 is larger than the area of ​​the second sliding mating surface 421. The sliding seat 42 has a preset maximum horizontal sliding stroke relative to the lower support 41. When the sliding seat 42 reaches the preset maximum horizontal sliding stroke relative to the lower support 41, the horizontal projection of the second sliding mating surface 421 is located within the horizontal projection area of ​​the first sliding mating surface 411.

[0048] Therefore, even if the sliding seat 42 slides horizontally within the maximum allowable range, the second sliding mating surface 421 can still be supported by the first sliding mating surface 411, preventing the sliding seat 42 from sliding out of the effective pressure bearing area, thereby improving the load bearing safety of the floating pressure bearing assembly 40.

[0049] Furthermore, a first wear-resistant sliding plate 412 can be fixedly mounted on the lower support 41, and a second wear-resistant sliding plate 423 can be fixedly mounted on the bottom of the sliding seat 42. The top surface of the first wear-resistant sliding plate 412 forms a first sliding mating surface 411, and the bottom surface of the second wear-resistant sliding plate 423 forms a second sliding mating surface 421.

[0050] The first wear-resistant sliding plate 412 and the second wear-resistant sliding plate 423 can be made of wear-resistant alloy steel, copper alloy, high-temperature resistant composite wear-resistant material, or other wear-resistant materials. By setting the first wear-resistant sliding plate 412 and the second wear-resistant sliding plate 423, the wear between the lower support 41 and the sliding seat 42 can be reduced, and replacement and maintenance can be facilitated after long-term use.

[0051] An oil reservoir 413 may also be formed on the first sliding mating surface 411. Specifically, the first wear-resistant slide plate 412 forms the first sliding mating surface 411 on the side facing the second wear-resistant slide plate 423, and the oil reservoir 413 is formed on the top surface of the first wear-resistant slide plate 412. The oil reservoir 413 is used to contain lubricating oil, grease, solid lubricating materials, or other lubricating media to improve the lubrication conditions between the first sliding mating surface 411 and the second sliding mating surface 421.

[0052] The upper surface of the sliding seat 42 may also have a first clearance surface 424 located around the arc-shaped protrusion 422. The bottom surface of the upper support platform 30 has a second clearance surface 33 located around the arc-shaped groove 31. When the arc-shaped protrusion 422 and the arc-shaped groove 31 are in pressure-bearing engagement, the first clearance surface 424 and the second clearance surface 33 are vertically opposite each other, and a vertical anti-adhesion gap is left between the first clearance surface 424 and the second clearance surface 33.

[0053] The vertical anti-adhesion gap is used to prevent the first clearance surface 424 and the second clearance surface 33 from prematurely adhering under normal pressure. As a result, the arc-shaped protrusion 422 and the arc-shaped groove 31 can maintain the main pressure-bearing and swaying matching relationship, avoiding premature contact of the outer plane and limiting the angular sway of the upper bearing platform 30.

[0054] The upper support platform 30 is wider than the lower support platform 20 in the same direction. The upper support platform 30 extends beyond the corresponding sides of the lower support platform 20 on both sides in the width direction, forming an extended load-bearing area 34. This extended load-bearing area 34 increases the load-bearing area of ​​the upper support platform 30, enabling it to support wide pallets, racks, aluminum coils, or other large, heavy-duty materials. Under heavy or off-center load conditions, the extended load-bearing area 34 has a larger overhang relative to the lower support platform 20, making it more prone to localized deflection or torsional deformation.

[0055] Multiple floating pressure-bearing components 40 are arranged at intervals along the length and width directions of the lower support platform 20. At least some of the floating pressure-bearing components 40 are disposed on the lower support platform 20 and are arranged adjacent to the side of the lower support platform 20 along the width direction. That is, some of the floating pressure-bearing components 40 are arranged as close as possible to the outward bearing area 34 to provide effective floating pressure support for the outward bearing area 34.

[0056] With the above arrangement, when the extended load-bearing area 34 deflects or tilts due to heavy load, the floating pressure-bearing component 40 arranged on the side of the adjacent lower support platform 20 along the width direction can adapt to the local deformation through the horizontal sliding pair and the arc surface pressure-bearing cooperation, reducing the bending torque transmitted from the deflection deformation of the extended load-bearing area 34 to the lower support platform 20 and the traveling wheel set 21.

[0057] In one embodiment suitable for feeding an annealing furnace, the moving guide rail 11 includes a material cart guide rail assembly 1101 and a traction vehicle guide rail assembly 1102. The material cart guide rail assembly 1101 is mounted on the frame 10 and rolls in cooperation with the traveling wheel assembly 21 at the bottom of the lower support platform 20. The traction vehicle guide rail assembly 1102 is spaced apart from the material cart guide rail assembly 1101.

[0058] The heavy-duty transfer equipment also includes a tractor 70. The tractor 70 is movably mounted on the tractor guide rail assembly 1102. The lower support platform 20 is provided with a traction force-bearing part 22, and the tractor 70 is provided with a traction connection part 71 that cooperates with the traction force-bearing part 22.

[0059] When the traction connection 71 cooperates with the traction force receiving part 22, the traction vehicle 70 can drive the lower support platform 20 to move along the material car guide rail assembly 1101. Thus, the traction vehicle 70 and the lower support platform 20 can run along different guide rails respectively, which is convenient to adapt to the requirements of different track heights, track gauges or spatial arrangements in annealing furnaces, heat treatment furnaces or other workstations.

[0060] See attached document Figure 5 , Figure 6As shown, in this embodiment, the material car guide rail assembly 1101 is mainly used to support and guide the lower support platform 20 and the upper bearing platform 30 above it, while the traction vehicle guide rail assembly 1102 is mainly used to guide the traction vehicle 70. By separating the material car guide rail assembly 1101 and the traction vehicle guide rail assembly 1102, the interference of the traction vehicle 70 on the material car bearing path can be reduced, and it is also convenient for the material car guide rail assembly 1101 to connect with the furnace guide rail or the target station guide rail.

[0061] It should be noted that the dual guide rail and tractor structure is mainly used to adapt to the traction arrangement requirements in specific transfer scenarios. Even when the tractor 70 drives the lower support platform 20 to move, in this embodiment, the upper support platform 30 and the lower support platform 20 are still connected by multiple floating pressure-bearing components 40, so that the heavy-load flexural deformation of the upper support platform 30 is not directly rigidly transmitted to the lower support platform 20 and the traveling wheel set 21.

[0062] Work process and technical effects In use, the rack, pallet, aluminum coil or other heavy materials are placed on the upper support platform 30. The lower support platform 20 moves along the moving guide rail 11 via the traveling wheel set 21, thereby driving the upper support platform 30 and the heavy materials it carries into or out of the target workstation.

[0063] When the upper support platform 30 is subjected to heavy loads, eccentric loads, start-stop impacts, or high-temperature deformation, it may experience downward deflection, torsion, or tilting in localized areas. In this case, the arc-shaped protrusion 422 and the arc-shaped groove 31 provide a bearing fit to accommodate the angular sway of the upper support platform 30 relative to the sliding seat 42; the sliding fit between the first sliding mating surface 411 and the second sliding mating surface 421 accommodates the horizontal displacement of the sliding seat 42 relative to the lower support 41.

[0064] Meanwhile, the horizontal clearance in the limiting component 50 allows the upper bearing platform 30 to undergo slight horizontal displacement relative to the lower support platform 20 within the normal floating range, without prematurely locking the floating pressure bearing component 40. The anti-detachment limiting component 60 prevents the upper bearing platform 30 from disengaging from the sliding seat 42 without affecting normal angular sway and slight horizontal displacement.

[0065] Therefore, this embodiment can achieve floating decoupling between the upper bearing platform 30 and the lower support platform 20 while ensuring heavy load bearing capacity, reducing the bending torque transmitted from the flexural deformation of the upper bearing platform 30 to the traveling wheel set 21, so that the traveling wheel set 21 can maintain a relatively stable contact posture with the moving guide rail 11, thereby reducing the risk of rail biting, uneven wear, jamming and unstable operation.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A heavy-duty transfer device designed to prevent bending deformation under heavy loads, characterized in that, include: The frame (10) is equipped with a movable guide rail (11). The lower support platform (20) has a set of walking wheels (21) at its bottom that roll in cooperation with the moving guide rail (11). The upper support platform (30) is located above the lower support platform (20); Multiple floating pressure-bearing components (40) are spaced apart between the upper support platform (30) and the lower support platform (20); each floating pressure-bearing component (40) includes: The lower support (41) is fixed on the lower support platform (20), and the lower support (41) is provided with a first sliding mating surface (411). A sliding seat (42) is disposed above the lower support (41). The sliding seat (42) has a second sliding mating surface (421) that fits against the first sliding mating surface (411), and an arc-shaped protrusion (422) is also provided at its upper end. The second sliding mating surface (421) slides against the first sliding mating surface (411) in the horizontal direction. The bottom of the upper support platform (30) is provided with an arc-shaped groove (31) that matches the arc-shaped protrusion (422). The arc-shaped protrusion (422) is supported and movably fitted in the arc-shaped groove (31) so that the upper support platform (30) can be tilted at an angle relative to the sliding seat (42). A limiting component (50) is disposed between the lower support platform (20) and the upper bearing platform (30); it includes a first limiting part (51) and a second limiting part (52). One of the lower support platform (20) and the upper support platform (30) is provided with a first limiting part (51), and the other is provided with a second limiting part (52); the first limiting part (51) extends at least partially into the second limiting part (52), and a horizontal clearance gap is formed between the outer side of the first limiting part (51) and the inner side of the second limiting part (52).

2. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: Each of the floating pressure-bearing components (40) further includes an anti-detachment limiting member (60), which is vertically inserted through the upper support platform (30) and fixedly connected to the sliding seat (42); the upper support platform (30) is provided with a through hole (32) for the anti-detachment limiting member (60) to pass through, the diameter of the through hole (32) is larger than the outer diameter of the rod portion (61) of the anti-detachment limiting member (60), and there is a radial clearance between the outer peripheral surface of the rod portion (61) of the anti-detachment limiting member (60) and the hole wall of the through hole (32); the upper end of the anti-detachment limiting member (60) is provided with a limiting head (62), and there is an axial clearance between the limiting head (62) and the upper surface of the upper support platform (30) or the stepped surface in the through hole (32).

3. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: A high-temperature resistant solid self-lubricating pad (44) is provided between the arc-shaped protrusion (422) and the arc-shaped groove (31); the high-temperature resistant solid self-lubricating pad (44) is attached to the outer arc surface of the arc-shaped protrusion (422) and / or the inner arc surface of the arc-shaped groove (31), and the arc-shaped protrusion (422) is pressure-fitted with the arc-shaped groove (31) through the high-temperature resistant solid self-lubricating pad (44).

4. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: The first limiting part (51) is a positioning pin, and the second limiting part (52) is a limiting hole; one of the lower support platform (20) and the upper bearing platform (30) is fixedly provided with the positioning pin, and the other is provided with the limiting hole; the positioning pin is inserted into the limiting hole, the diameter of the limiting hole is larger than the outer diameter of the positioning pin, and an annular horizontal clearance is formed between the outer peripheral surface of the positioning pin and the hole wall of the limiting hole; the radial width of the annular horizontal clearance is greater than the horizontal sliding stroke of the sliding seat (42) relative to the lower support (41).

5. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: Both the first sliding mating surface (411) and the second sliding mating surface (421) are horizontal planes; the area of ​​the first sliding mating surface (411) is greater than the area of ​​the second sliding mating surface (421); when the sliding seat (42) reaches the preset maximum horizontal sliding stroke relative to the lower support (41), the horizontal projection of the second sliding mating surface (421) is located within the horizontal projection area of ​​the first sliding mating surface (411).

6. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: The lower support (41) is fixedly provided with a first wear-resistant sliding plate (412), and the bottom of the sliding seat (42) is fixedly provided with a second wear-resistant sliding plate (423); the top surface of the first wear-resistant sliding plate (412) forms the first sliding mating surface (411), and the bottom surface of the second wear-resistant sliding plate (423) forms the second sliding mating surface (421); an oil storage groove (413) is provided on the first sliding mating surface (411).

7. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: The upper end face of the sliding seat (42) has a first clearance surface (424) located around the arc-shaped protrusion (422); the bottom surface of the upper support platform (30) has a second clearance surface (33) located around the arc-shaped groove (31); when the arc-shaped protrusion (422) and the arc-shaped groove (31) are in pressure-fitting state, the first clearance surface (424) and the second clearance surface (33) are vertically opposite each other, and a vertical anti-adhesion gap is left between the first clearance surface (424) and the second clearance surface (33).

8. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: The upper support platform (30) has a larger dimension in the width direction than the lower support platform (20) in the width direction; the two sides of the upper support platform (30) extend beyond the corresponding side of the lower support platform (20) in the width direction to form an extended support area (34). Multiple floating pressure-bearing components (40) are arranged at intervals along the length and width directions of the lower support platform (20), and at least some of the floating pressure-bearing components (40) are arranged adjacent to the side of the lower support platform (20) along the width direction to support the extended bearing area (34).

9. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 1, characterized in that: The moving guide rail (11) includes a material cart guide rail group (1101) and a traction vehicle guide rail group (1102); the material cart guide rail group (1101) is set on the frame (10) and rolls in cooperation with the walking wheel group (21) at the bottom of the lower support platform (20); the traction vehicle guide rail group (1102) is spaced apart from the material cart guide rail group (1101).

10. The heavy-duty transfer equipment for preventing heavy-load flexural deformation according to claim 9, characterized in that: It also includes a tractor (70); the tractor (70) is movably mounted on the tractor guide rail assembly (1102); the lower support platform (20) is provided with a traction force receiving part (22), and the tractor (70) is provided with a traction connection part (71) that cooperates with the traction force receiving part (22); when the traction connection part (71) cooperates with the traction force receiving part (22), the tractor (70) drives the lower support platform (20) to move along the material car guide rail assembly (1101).

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