Transfer device for aluminum coil heat treatment

Abstract

A transfer device for aluminum coil heat treatment relates to the technical field of transfer tools and comprises a flat car, a telescopic device, a telescopic driving device, a lifting device, a lifting driving device and a lifting device. The flat car is switched among a plurality of heat treatment furnaces; the telescopic device is telescopically connected with the top of the flat car and driven by the telescopic driving device to enter and exit the heat treatment furnace; the lifting device is installed on the telescopic device and used for lifting the aluminum coil. The lifting driving device is located at the end, away from the heat treatment furnace, of the telescopic device. The lifting device is placed on the lifting device and used for supporting the aluminum coil. The lifting driving device adopts a deflection assembly and a labor-saving driving assembly, and efficient power transmission is achieved through a connecting rod mechanism composed of a fan-shaped swing arm, a sliding shaft, a connecting rod, a V-shaped driving arm, a telescopic cylinder and a transmission arm. According to the invention, the equipment structure is simplified, the operation reliability is improved, the service life is prolonged, efficient automatic operation is realized, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transfer tool, in particular to a transfer device for aluminum coil heat treatment. BACKGROUND

[0002] In the process of aluminum material processing, heat treatment is a key process to improve the mechanical properties and organizational structure of aluminum coil. In order to realize efficient continuous production, special transfer equipment is usually configured to transfer the aluminum coil to be processed or the aluminum coil after processing between the support frame outside the furnace and the support frame inside the furnace. In the prior art, most heat treatment systems adopt an internal feeding and discharging trolley structure, that is, the driving mechanism, walking wheel set and bearing platform are all integrated inside the heat treatment furnace. Although this design can complete the basic feeding function, it has obvious defects in actual application:

[0003] Firstly, the heat treatment furnace is in a high temperature environment for a long time, and the key driving and control elements such as motor, reducer and sensor cannot withstand continuous high temperature, which is easy to cause aging, failure and even burning, resulting in high equipment failure rate and frequent maintenance. Secondly, in order to protect the internal moving parts, the furnace body needs to be additionally provided with a complex heat insulation, cooling and sealing structure, which not only increases the manufacturing cost, but also makes the furnace body structure bulky, affecting the uniformity of the heat field and the energy efficiency. Thirdly, the internal trolley is limited by the furnace space, and its walking track length and bearing capacity are restricted, which is difficult to adapt to the batch transfer demand of aluminum coils of different specifications. In addition, more importantly, once the internal trolley fails, it often needs to be repaired after the furnace is cooled down, which seriously interferes with the production rhythm.

[0004] Chinese patent (publication number CN112375890A) discloses a material pile transfer equipment for a heat treatment furnace and a processing method thereof, which comprises a walking trolley, a transfer trolley and an electrical control device. In the walking trolley, a first driving mechanism drives the trolley frame to move along the walking track, and a transfer track is arranged on the upper surface of the walking trolley. The transfer trolley comprises a lower trolley frame, a lifting frame, an upper trolley frame, a second driving mechanism, a third driving mechanism and a lifting driving mechanism. The second driving mechanism drives the lower trolley frame to move along the transfer track, the third driving mechanism drives the lifting frame to move along the lower trolley frame, and the lifting driving mechanism drives the upper trolley frame to rise or fall in the vertical direction. However, it is found in actual use that the movement of the lower trolley frame of the patent will be stuck due to unbalanced load. In addition, the lifting driving mechanism of the patent has a high power requirement for the power source, which cannot meet the heavy load demand, and the lifting driving mechanism cannot be locked after lifting, which often causes unexpected falling and safety accidents.

[0005] Therefore, there is an urgent need for a transfer device specially used for aluminum coil heat treatment to overcome the shortcomings of the prior art in reliability. SUMMARY

[0006] To overcome the shortcomings of the prior art, the present invention discloses a transfer device for heat treatment of aluminum coils.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] A transfer device for heat treatment of aluminum coils, used to transfer aluminum coils onto a support frame inside a heat treatment furnace, or to remove aluminum coils from the heat treatment furnace, comprising:

[0009] Flatbed carts are used to switch between multiple heat treatment furnaces;

[0010] Telescopic device, which extends and retracts to the top of the flatbed truck;

[0011] Telescopic drive device, installed between the flatbed cart and the telescopic device; used to drive the telescopic device in and out of the heat treatment furnace;

[0012] A lifting device, installed on a telescopic device; used to lift aluminum coils.

[0013] A lifting drive device is installed between the lifting device and the telescopic device, and the power source of the lifting drive device is located at the end of the telescopic device away from the heat treatment furnace; it is used to drive the lifting device to lift.

[0014] A lifting device, placed on a lifting device; used to support aluminum coils.

[0015] Preferably, the telescopic device includes:

[0016] The travel track is installed on the flatbed truck;

[0017] Telescopic frame, installed above the travel track;

[0018] The track wheel is rotatably connected to the telescopic frame, and the track wheel surface is provided with annular grooves that correspond to and are adapted to the traveling track.

[0019] Preferably, the telescopic drive device includes:

[0020] Sprockets, which are two sets installed at both ends of the flatbed truck;

[0021] The chain is wound and connected to two sets of sprockets to form a closed loop; the end of the telescopic frame facing away from the heat treatment furnace is hooked onto the chain.

[0022] The drive motor is installed at the end of the flatbed cart away from the heat treatment furnace and is connected to the sprocket drive at that end of the flatbed cart.

[0023] Preferably, the lifting device includes:

[0024] The lifting frame is located above the telescopic device;

[0025] The guiding assemblies are multiple, and the multiple guiding assemblies are divided into two groups and arranged on two sides of the lifting frame respectively.

[0026] The guiding assembly comprises:

[0027] The guiding sleeve is mounted on the telescopic device.

[0028] The guide column is mounted on the lifting frame, and the guide column is vertically and slidingly connected with the guiding sleeve.

[0029] Preferably, the lifting driving device comprises:

[0030] The deflection assembly is multiple and arranged along the length direction of the telescopic device.

[0031] The labor-saving driving assembly is mounted on one end of the telescopic device away from the heat treatment furnace.

[0032] The deflection assembly comprises:

[0033] The fan-shaped swing arm is hingedly connected with the telescopic device at the tip thereof, and the lifting device is provided with a horizontal strip-shaped sliding groove corresponding to the position of the fan-shaped swing arm.

[0034] The sliding shaft is fixedly connected with the fan-shaped swing arm at the angular end away from the labor-saving driving assembly and slidingly connected with the strip-shaped sliding groove of the lifting device.

[0035] The connecting rod is arranged between the adjacent two sliding shafts, and the two ends of the connecting rod are connected with the adjacent sliding shafts.

[0036] The labor-saving driving assembly comprises:

[0037] The driving arm is in a V-shaped structure, one end of the driving arm is hingedly connected with the telescopic device, and the opening direction of the driving arm is towards the heat treatment furnace.

[0038] The telescopic cylinder is hingedly connected with the driving arm at one end and hingedly connected with the telescopic device at the other end.

[0039] The transmission arm is hingedly connected with the driving arm at one end close to the telescopic device and hingedly connected with the fan-shaped swing arm at the other end close to the angular end of the driving arm.

[0040] Preferably, the telescopic device is provided with a limiting block on the side away from the driving arm corresponding to the fan-shaped swing arm, and the fan-shaped swing arm is provided with a slot corresponding to the limiting block. When the lifting device is in the lowest position, the lifting device falls on the limiting block. When the lifting device is in the highest position, the telescopic cylinder continues to act, so that the fan-shaped swing arm is deflected towards the limiting block until the slot of the fan-shaped swing arm is in abutment with the limiting block, thereby achieving self-locking.

[0041] Preferably, a buffer pad is mounted on the top of the limiting block.

[0042] Preferably, the telescopic cylinder and the sector-shaped swing arm of the same deflection assembly are both two.

[0043] Preferably, the lifting device comprises:

[0044] The base is in a frame structure, and the length of the base is greater than the width of the lifting device.

[0045] The support plates are two symmetrically arranged, and the two support plates are obliquely hinged to the base.

[0046] Preferably, a ground rail is further installed on the ground outside the heat treatment furnace, and the flat car travels along the ground rail; the fixed track is installed on the support frame, and the telescopic device can travel along the fixed track when entering the heat treatment furnace.

[0047] Due to the adoption of the technical scheme as described above, the present application has the following beneficial effects:

[0048] (1) The present application has a simple structure, and the flat car, the telescopic device, the lifting device and the lifting device are arranged as a whole outside the heat treatment furnace, and only the front end structure carrying the aluminum roll is extended into the furnace during operation, which effectively avoids the exposure of key components such as driving motor and transmission mechanism to high temperature environment for a long time, significantly improves the reliability and service life of the equipment operation, and simplifies the internal structure of the furnace body, reduces the difficulty of sealing and heat insulation design and the overall manufacturing and maintenance cost.

[0049] (2) The flat car travels straight along the ground rail without turning, and cooperates with the telescopic action perpendicular to the walking direction to realize the decoupling control of walking and telescopic function, which not only improves the repeated positioning accuracy and reduces the docking deviation, but also facilitates the realization of modular operation logic, enhances the stability and automation level of system operation. The lifting driving device is always located in the normal temperature area outside the furnace, which ensures that it is not affected by heat radiation during the process of aluminum roll in and out, avoids the performance degradation or failure caused by high temperature, and further guarantees the accuracy and safety of lifting action.

[0050] (3) The telescopic device of the present application adopts a double-track support structure, cooperates with a track wheel with a ring groove, effectively suppresses the risk of lateral deviation and derailment, and the chain closed-loop transmission mode has a certain flexibility, which can tolerate the slight fluctuation caused by assembly error and reduce the manufacturing and installation precision requirement. The fixed track flush with the external track is arranged in the furnace, and the slope chamfer is arranged at the connection end to make the track wheel transition smoothly, prevent the telescopic frame from being tilted or stuck due to suspension or sudden stress change, and improve the continuity and structural stability of the telescopic process.

[0051] (4) The guiding assembly composed of a guide sleeve and a guide column is arranged in the lifting device, so that horizontal deviation, shaking or tilting of the lifting device is effectively inhibited. The lifting driving device adopts a deflection assembly composed of a sector swing arm, a sliding shaft and a connecting rod, and combines with a labor-saving driving assembly composed of a V-shaped driving arm, a telescopic cylinder and a transmission arm to form a set of connecting rod type mechanical force amplification mechanism. The structure not only efficiently converts the linear thrust of the telescopic cylinder into vertical movement of the lifting frame, but also amplifies the output torque through the lever principle, improves the carrying capacity without increasing the pressure of the hydraulic system, reduces the energy consumption, and ensures smooth and reliable operation under heavy load conditions.

[0052] In addition, the limiting block cooperates with the slot on the sector swing arm to realize the load unloading function of the lifting device at the lowest position and the mechanical self-locking function at the highest position. The former can make the driving element separate from the load in the non-working state, prolonging the service life, and the latter can prevent the lifting frame from falling due to accidental pressure relief of the hydraulic system without additional brake device, which is simple in structure and safe and reliable.

[0053] (5) The lifting device adopts a hinged self-adaptive support plate structure, which is automatically reset and adheres to aluminum rolls of different diameters by gravity without additional driving or adjusting mechanism, which not only disperses the contact stress and prevents pressure injury, but also improves the loading and unloading efficiency and universality. The length of the base is greater than the width of the lifting platform, which can be stably lapped on the inner support frame of the furnace to form a reliable load bearing path, ensuring the safety and stability of the transfer process. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 It is a use state diagram of the present application;

[0055] Figure 2 It is a perspective structural diagram of the flat car;

[0056] Figure 3 It is a structural diagram of the flat car;

[0057] Figure 4 It is a top view of the flat car;

[0058] Figure 5 It is a partial structural diagram of the flat car;

[0059] Figure 6 It is a state diagram of the lifting device at the lowest position;

[0060] Figure 7 It is a state diagram of the lifting device at the highest position;

[0061] Figure 8 It is a structural diagram of the lifting device on the support frame;

[0062] Figure 9 It is a structural diagram of the support frame;

[0063] Figure 10 Structure diagram of the lifting device.

[0064] In the figure: 1, ground rail; 2, flat car; 3, telescopic device; 3-1, walking track; 3-2, telescopic frame; 3-3, track wheel; 4, telescopic driving device; 4-1, chain wheel; 4-2, chain; 4-3, driving motor; 5, lifting device; 5-1, lifting frame; 5-2, guide sleeve; 5-3, guide column; 6, lifting driving device; 6-1, fan-shaped swing arm; 6-2, sliding shaft; 6-3, connecting rod; 6-4, driving arm; 6-5, telescopic cylinder; 6-6, transmission arm; 6-7, limiting block; 7, lifting device; 7-1, base; 7-2, support plate; 8, support frame; 9, fixed track. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0066] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0067] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] Example one:

[0069] In combination with the accompanying Figures 1-4A transfer device for heat treatment of aluminum coils is provided, used to transfer aluminum coils to a support frame 8 inside a heat treatment furnace, or to remove aluminum coils from the heat treatment furnace. The transfer device includes a flatbed trolley 2, a telescopic device 3, a lifting device 5, and a lifting device 7. A ground rail 1 is installed on the ground outside the heat treatment furnace, extending along multiple heat treatment furnaces arranged side-by-side. The flatbed trolley 2 is equipped with motor-driven wheels, enabling it to move autonomously along the ground rail 1, thus allowing it to switch operating positions between multiple heat treatment furnaces. Compared to the prior art where loading and unloading trolleys are installed inside the heat treatment furnace, this embodiment arranges the main moving mechanisms outside the furnace body, avoiding direct damage to the driving components from the high-temperature environment, simplifying the internal structure of the heat treatment furnace, reducing the complexity of furnace body sealing and insulation design, and simultaneously reducing equipment maintenance frequency and overall operating costs.

[0070] A telescopic device 3 is connected to the top of the flatbed trolley 2. The telescopic direction of the device 3 is perpendicular to the traveling direction of the flatbed trolley 2, that is, it extends into or out of the heat treatment furnace in a direction perpendicular to the ground rail 1. Since the flatbed trolley 2 is always located outside the heat treatment furnace and does not require turning during travel, but only needs to move along a straight track, its repeatability is significantly improved, and docking deviations caused by turning errors are reduced. A telescopic drive device 4 is provided between the flatbed trolley 2 and the telescopic device 3. The telescopic drive device 4 is used to drive the telescopic device 3 to enter and exit the heat treatment furnace in a direction perpendicular to the ground rail 1. This arrangement makes the telescopic action independent of the traveling action of the flatbed trolley 2, which facilitates modular control and improves the reliability of system operation.

[0071] A lifting device 5 is installed on the telescopic device 3, which is used to lift or lower the aluminum coil. A lifting drive device 6 is installed between the lifting device 5 and the telescopic device 3, with the power source of the lifting drive device 6 located at the end of the telescopic device 3 away from the heat treatment furnace. The lifting drive device 6 drives the lifting device 5 to complete the lifting action. Before the aluminum coil enters the heat treatment furnace, it is first lifted by the lifting device 5 so that its bottom is higher than the support surface of the support frame 8, so that it can be smoothly sent into the furnace and accurately positioned. Since the power source of the lifting drive device 6 is installed at the end of the telescopic device 3 away from the heat treatment furnace, the power source of the lifting drive device 6 is in the ambient temperature environment outside the furnace throughout the entire process of the aluminum coil entering and leaving the heat treatment furnace, avoiding the impact of high temperature on its performance and lifespan, improving the stability of equipment operation, and reducing the need for cooling or protective measures.

[0072] A lifting device 7 for supporting the aluminum coil is placed on the lifting device 5. (See attached image) Figure 1 As shown, multiple lifting devices 7 can be placed side by side, capable of supporting multiple aluminum coils simultaneously to meet batch transfer needs. The structure of the lifting device 7 is adapted to the shape of the aluminum coil, ensuring that the aluminum coil is subjected to uniform force during transfer, preventing it from rolling or shifting, thus improving operational safety.

[0073] As shown in the accompanying drawings Figure 1 and 8 When the aluminum coil is sent into the heat treatment furnace, the following steps are taken:

[0074] Step 1: Place the lifting device 7 on the lifting device 5, and use the crane to hoist the aluminum coil onto the lifting device 7;

[0075] Step 2: Drive the lifting device 5 to rise by the lifting drive device 6 until the lifting drive device 6 reaches the self-locking state, and the bottom of the lifting device 7 is higher than the support surface of the support frame 8;

[0076] Step 3: Start the flat car 2 and make it run along the ground rail 1 to the target heat treatment furnace;

[0077] Step 4: Drive the telescopic device 3 into the heat treatment furnace by the telescopic drive device 4 until the aluminum coil is sent to the designated placement position;

[0078] Step 5: Drive the lifting device 5 to lower by the lifting drive device 6, so that the bottom of the lifting device 7 falls on the support surface of the support frame 8, and the unloading of the aluminum coil is completed;

[0079] Step 6: Drive the telescopic device 3 to reset and exit the heat treatment furnace by the telescopic drive device 4, then close the furnace door and start the heat treatment operation.

[0080] It should be noted that steps 1 to 3 have no fixed order requirement.

[0081] Example Two:

[0082] In combination with the accompanying drawings Figures 5-6 , 8 and 9, a transfer device for aluminum coil heat treatment is different from example one in that on the basis of example one, the telescopic device 3 includes a walking track 3-1, a telescopic frame 3-2 and a track wheel 3-3. The walking track 3-1 is installed on the flat car 2 and is spaced apart into two, located on both sides of the telescopic device 3, forming a double-track support structure, which improves the lateral stability of the telescopic frame 3-2 during telescopic process, preventing the deflection or jam caused by unilateral stress. The telescopic frame 3-2 is provided above the walking track 3-1, and the telescopic frame 3-2 is a frame structure, which is rotationally connected with a plurality of track wheels 3-3 corresponding to the positions of the two walking tracks 3-1. The wheel surface of the track wheel 3-3 is provided with a ring groove matched with the contour of the walking track 3-1, and the ring groove structure can effectively limit the displacement of the track wheel 3-3 in the transverse direction, preventing it from accidentally leaving the track during operation, improving the reliability and safety of operation.

[0083] As shown in the accompanying drawings Figure 6As shown, the telescopic drive device 4 includes a chain wheel 4-1, a chain 4-2 and a drive motor 4-3. Among them, the chain wheel 4-1 is two groups respectively installed at both ends of the flat car 2, and the chain 4-2 is wound and connected with the two groups of chain wheels 4-1 and forms a closed loop transmission structure. The end of the telescopic frame 3-2 away from the heat treatment furnace is hung with the chain 4-2, and the telescopic frame 3-2 is driven to move back and forth along the walking track 3-1 by the circulating movement of the chain 4-2, which meets the required telescopic stroke. Because the chain 4-2 has a certain flexibility, even if the telescopic frame 3-2 has a small amplitude fluctuation during walking due to manufacturing or assembly error, it will not cause transmission jam, thereby appropriately relaxing the assembly precision requirement of the telescopic device 3, reducing the manufacturing and installation difficulty. The drive motor 4-3 is installed at the end of the flat car 2 away from the heat treatment furnace, and the drive motor 4-3 is in transmission connection with the chain wheel 4-1 located at the end. Since the drive motor 4-3 is always away from the heat treatment furnace and is in the normal temperature area, the adverse effects of high temperature radiation on its electrical elements and lubrication system are avoided, the service life is prolonged, and the maintenance requirement is reduced.

[0084] Further, as shown in the accompanying drawings Figure 8 and 9 As shown, the support frame 8 is installed with a fixed track 9 coaxially arranged with the walking track 3-1, and the track surface of the fixed track 9 is flush with the track surface of the walking track 3-1. When the telescopic frame 3-2 enters the heat treatment furnace, the track wheel 3-3 thereon can smoothly transition from the walking track 3-1 to the fixed track 9 to continue walking, forming a continuous track support, effectively preventing the telescopic frame 3-2 from being off-loaded, warped or deformed due to suspension or single-point support. In order to facilitate the smooth entry and exit of the track wheel 3-3 into the track connection area, the opposite ends of the fixed track 9 and the walking track 3-1 are both provided with a slope chamfer structure. The chamfer structure can guide the smooth transition of the track wheel 3-3, avoid the impact, jumping or jam caused by the sudden change of the track end surface, and improve the smoothness of the telescopic action and the stability of the equipment operation.

[0085] Example three:

[0086] In combination with the accompanying drawings Figures 4-7A transfer device for heat treatment of aluminum coils, based on Embodiment 1 or 2, includes a lifting device 5 comprising a lifting frame 5-1 and guide components. The lifting frame 5-1 is positioned above a telescopic device 3. Multiple guide components are installed between the telescopic device 3 and the lifting device 5, divided into two groups and respectively located on both sides of the lifting frame 5-1, arranged symmetrically to ensure balanced force during lifting. Each guide component includes a guide sleeve 5-2 and a guide post 5-3. The guide sleeve 5-2 is fixedly installed on the telescopic device 3; the guide post 5-3 is vertically fixed to the bottom of the lifting frame 5-1; the guide post 5-3 is inserted into the corresponding guide sleeve 5-2, forming a vertical sliding fit with the guide sleeve 5-2. This structure effectively limits the horizontal displacement of the lifting frame 5-1 during lifting, preventing it from swaying or shaking, thereby improving the stability of the aluminum coil during transfer and preventing the aluminum coil from slipping or failing due to tilting of the lifting frame 5-1.

[0087] As attached Figure 6 and 7 As shown, the lifting drive device 6 includes a deflection assembly and a labor-saving drive assembly. The deflection assemblies are multiple units spaced apart along the length of the telescopic device 3; the labor-saving drive assembly is installed at the end of the telescopic device 3 facing away from the heat treatment furnace; the labor-saving drive assembly drives the deflection assemblies to deflect synchronously, thereby driving the lifting frame 5-1 to achieve lifting action.

[0088] Specifically, the deflection assembly includes a fan-shaped swing arm 6-1, a sliding shaft 6-2, and a connecting rod 6-3. The tip of the fan-shaped swing arm 6-1 is hinged to the telescopic device 3 via a pin, forming a swing structure that can rotate around the hinge point. The lifting frame 5-1 has a horizontally extending strip groove at the position corresponding to the fan-shaped swing arm 6-1. The sliding shaft 6-2 is fastened to the corner end of the fan-shaped swing arm 6-1 away from the force-saving drive assembly. The sliding shaft 6-2 passes into the strip groove of the lifting frame 5-1 and forms a sliding fit with the groove. When the fan-shaped swing arm 6-1 rotates around its tip hinge point, the sliding shaft 6-2 moves horizontally along the strip groove, thereby converting the swing of the fan-shaped swing arm 6-1 into the vertical movement of the lifting frame 5-1. A connecting rod 6-3 is installed between each of the two adjacent sliding shafts 6-2. The two ends of the connecting rod 6-3 are respectively hinged to the adjacent sliding shafts 6-2, so that all the fan-shaped swing arms 6-1 keep rotating synchronously under the linkage of the connecting rod 6-3, avoiding uneven force or jamming of the lifting frame 5-1 due to asynchronous movement of each deflection component.

[0089] The force-saving drive assembly includes a drive arm 6-4, a telescopic cylinder 6-5, and a transmission arm 6-6. The drive arm 6-4 has a V-shaped structure, with one end hinged to the telescopic device 3 via a pin, and the V-shaped opening facing the heat treatment furnace. One end of the telescopic cylinder 6-5 is hinged to the free end of the drive arm 6-4, and the other end is hinged to a fixed support on the telescopic device 3. The V-shaped structure of the drive arm 6-4 not only facilitates the installation and positioning of the telescopic cylinder 6-5 but also makes full use of the limited space at the tail of the telescopic device 3, resulting in a more compact overall structure and reducing the impact of the drive components on the lateral dimensions of the telescopic device 3. The transmission arm 6-6 is hinged to one end of the drive arm 6-4 near the telescopic device 3, and the other end of the transmission arm 6-6 is hinged to the corner end of the fan-shaped swing arm 6-1 near the drive arm 6-4, thus forming a linkage mechanism consisting of the drive arm 6-4, the transmission arm 6-6, and the fan-shaped swing arm 6-1. The linkage mechanism forms a mechanical force amplification structure, namely, the drive arm 6-4 and the transmission arm 6-6 constitute a force-saving lever system. When the telescopic cylinder 6-5 outputs the same thrust, it can amplify the driving torque acting on the fan-shaped swing arm 6-1, thereby reducing the requirements for the output pressure of the hydraulic system, reducing energy consumption, and improving the driving reliability of the lifting device 5 when carrying heavy aluminum coils.

[0090] As attached Figure 6 and 7 As shown, the lifting principle of the lifting frame 5-1 is as follows: When the telescopic cylinder 6-5 extends, it pushes the drive arm 6-4 to deflect away from the heat treatment furnace around its hinge point with the telescopic device 3, causing the transmission arm 6-6 to move synchronously, which in turn pushes the fan-shaped swing arm 6-1 to deflect counterclockwise upward around its tip hinge point; the fan-shaped swing arm 6-1 drives the sliding shaft 6-2 to move upward and to the left, and the sliding shaft 6-2 slides to the left along the horizontal strip groove of the lifting frame 5-1, while simultaneously pushing the lifting frame 5-1 upward, causing it to rise as a whole. During this process, the guide column 5-3 moves synchronously upward along the inner wall of the guide sleeve 5-2 to ensure the verticality of the lifting path. Conversely, when the telescopic cylinder 6-5 shortens, the drive arm 6-4 deflects in the opposite direction, the fan-shaped swing arm 6-1 rotates clockwise downward, the sliding shaft 6-2 slides to the right along the strip groove and drives the lifting frame 5-1 downward, and the guide column 5-3 then moves downward along the guide sleeve 5-2 to complete the reset action.

[0091] It is worth noting that the telescopic device 3 has a limiting block 6-7 fixedly installed on the side of the corresponding fan-shaped swing arm 6-1 away from the drive arm 6-4. The fan-shaped swing arm 6-1 has a slot that matches the position and contour of the limiting block 6-7. When the lifting device 5 is in the lowest working position, the lifting frame 5-1 falls directly on the limiting block 6-7, and the limiting block 6-7 bears all the static load of the aluminum coil and the lifting frame 5-1, thereby relieving the continuous stress state of the lifting drive device 6 and extending the service life of the telescopic cylinder 6-5 and other drive components. When the lifting device 5 rises to the highest position, the telescopic cylinder 6-5 continues to extend slightly, and the fan-shaped swing arm 6-1 will further deflect towards the limiting block 6-7 until the inner side wall of its slot abuts against the outer edge of the limiting block 6-7. At this time, the fan-shaped swing arm 6-1 is mechanically locked and cannot continue to rotate, thereby realizing the self-locking function of the lifting device 5 at the high position. This self-locking mechanism requires no additional braking device, has a simple and reliable structure, and can effectively prevent the lifting frame 5-1 from falling unexpectedly due to accidental pressure leakage of the hydraulic system during the process of the telescopic device 3 entering and exiting the heat treatment furnace, thus ensuring operational safety.

[0092] Furthermore, a buffer pad made of elastic material is installed on the top of the limiting block 6-7. When the lifting frame 5-1 descends to its lowest position and contacts the limiting block 6-7, the buffer pad absorbs impact energy, reduces rigid collisions between metal parts, lowers operating noise, and avoids structural fatigue damage caused by frequent impacts. The telescopic cylinder 6-5 and the corresponding fan-shaped swing arms 6-1 of the same deflection assembly are both spaced apart and symmetrically arranged on both sides of the lifting frame 5-1, forming a dual-sided synchronous drive structure. This arrangement not only improves the structural symmetry and motion synchronization during lifting, but also significantly enhances the overall load-bearing capacity, enabling the lifting frame 5-1 to maintain a stable and tilt-free lifting state when supporting heavy aluminum coils.

[0093] As attached Figure 6 As shown, a hydraulic station is installed on one side of the flatbed trolley 2 corresponding to the lifting drive device 6. This hydraulic station serves as the power source for the telescopic cylinder 6-5, providing it with a stable supply of hydraulic oil and pressure control. Simultaneously, due to the hydraulic station's mass, its installation position at the rear of the flatbed trolley 2 allows it to function as a counterweight. When the telescopic device 3 is fully extended into the heat treatment furnace, it balances the overturning moment generated by the forward movement of the front load, preventing the flatbed trolley 2 from tilting or the rear wheels from becoming unsupported, thus ensuring the stability and safety of the entire machine during operation.

[0094] Example 4:

[0095] Combined with appendix Figures 1-3 10, a transfer device for heat treatment of aluminum coils, based on any one of embodiments one to three, as shown in the appendix. Figure 10As shown, the lifting device 7 includes a base 7-1 and support plates 7-2. The base 7-1 has a frame-like structure, and its length is greater than the width of the lifting device 5, allowing both ends of the base 7-1 to be stably attached to the support frame 8, forming a reliable load-bearing support. Two support plates 7-2 are symmetrically arranged on the left and right sides of the inner frame of the base 7-1. The support plates 7-2 are inclinedly connected to the base 7-1 through hinge shafts, with the hinge points located near the bottom edge of the support plates 7-2. This structure allows the support plates 7-2 to swing naturally upwards under their own weight when no external force is applied. When an aluminum coil is placed on it, the support plates 7-2 can automatically adjust their angle according to the diameter of the aluminum coil, achieving adaptive and close support, effectively dispersing the pressure on the bottom of the aluminum coil, and preventing local crushing or rolling.

[0096] After the aluminum coil is lifted off by the overhead crane, the support plate 7-2 automatically tilts upwards and resets to its initial tilted position under gravity, preparing for the next placement of the aluminum coil. This eliminates the need for an additional reset mechanism, simplifying the structure and improving operational efficiency. This adaptive support design is suitable for aluminum coils of different diameters, enhancing the versatility and applicability of the device.

[0097] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. A transfer device for heat treatment of aluminum coils, used to transfer aluminum coils onto a support frame (8) inside a heat treatment furnace, or to remove aluminum coils from the heat treatment furnace, characterized in that, include: Flatbed cart (2) switches between multiple heat treatment furnaces; Telescopic device (3) is telescopically connected to the top of the flatbed vehicle (2); Telescopic drive device (4) is installed between flatbed vehicle (2) and telescopic device (3); used to drive telescopic device (3) to enter and exit heat treatment furnace; Lifting device (5), installed on telescopic device (3); used to lift aluminum coil; The lifting drive device (6) is installed between the lifting device (5) and the telescopic device (3), and the power source of the lifting drive device (6) is located at the end of the telescopic device (3) away from the heat treatment furnace; it is used to drive the lifting device (5) to lift. The lifting device (7) is placed on the lifting device (5) to support the aluminum coil.

2. The transfer device for heat treatment of aluminum coils as described in claim 1, characterized in that, The telescopic device (3) includes: The travel track (3-1) is installed on the flatbed vehicle (2); Telescopic frame (3-2) is installed above the travel track (3-1); The track wheel (3-3) is rotatably connected to the telescopic frame (3-2), and the surface of the track wheel (3-3) is provided with an annular groove that corresponds to and is adapted to the traveling track (3-1).

3. The transfer device for heat treatment of aluminum coils as described in claim 2, characterized in that, The telescopic drive device (4) includes: Sprockets (4-1) are two sets installed at both ends of the flatbed (2); The chain (4-2) is wound and connected with two sets of sprockets (4-1) to form a closed loop; the telescopic frame (3-2) is hooked to the chain (4-2) at the end opposite to the heat treatment furnace; The drive motor (4-3) is installed at one end of the flatbed cart (2) away from the heat treatment furnace and is connected to the sprocket (4-1) at that end of the flatbed cart (2) for transmission.

4. The transfer device for heat treatment of aluminum coils as described in claim 1, characterized in that, The lifting device (5) includes: The lifting frame (5-1) is located above the telescopic device (3); The guide components are multiple, and the multiple guide components are divided into two groups, which are respectively located on both sides of the lifting frame (5-1); The guiding component includes: Guide sleeve (5-2) is installed on telescopic device (3); The guide column (5-3) is installed on the lifting frame (5-1); the guide column (5-3) and the guide sleeve (5-2) are vertically slidingly engaged.

5. The transfer device for heat treatment of aluminum coils as described in claim 1, characterized in that, The lifting drive device (6) includes: The deflection components are multiple units spaced apart along the length of the telescopic device (3); The labor-saving drive component is installed at the end of the telescopic device (3) away from the heat treatment furnace; The deflection component includes: The fan-shaped swing arm (6-1) has its tip hinged to the telescopic device (3); the lifting device (5) has a horizontal strip groove at the position corresponding to the fan-shaped swing arm (6-1); The sliding shaft (6-2) is fastened to the corner end of the fan-shaped swing arm (6-1) away from the force-saving drive component, and slides in cooperation with the strip groove of the lifting device (5); A connecting rod (6-3) is located between two adjacent sliding shafts (6-2), and the two ends of the connecting rod (6-3) are connected to the adjacent sliding shafts (6-2) respectively. The labor-saving drive component includes: The drive arm (6-4) has a V-shaped structure. One end of the drive arm (6-4) is hinged to the telescopic device (3), and its opening direction faces the heat treatment furnace. The telescopic cylinder (6-5) is hinged at one end to the drive arm (6-4) and at the other end to the telescopic device (3); The transmission arm (6-6) is hinged at one end to the end of the drive arm (6-4) near the telescopic device (3), and at the other end to the corner end of the fan-shaped swing arm (6-1) near the drive arm (6-4).

6. The transfer device for heat treatment of aluminum coils as described in claim 5, characterized in that, The telescopic device (3) is equipped with a limit block (6-7) on the side of the fan-shaped swing arm (6-1) away from the drive arm (6-4). The fan-shaped swing arm (6-1) has a slot that matches the limit block (6-7). When the lifting device (5) is at its lowest position, the lifting device (5) rests on the limit block (6-7). When the lifting device (5) is at its highest position, the telescopic cylinder (6-5) continues to move, causing the fan-shaped swing arm (6-1) to deviate towards the limit block (6-7) until the slot of the fan-shaped swing arm (6-1) abuts against the limit block (6-7), thus achieving self-locking.

7. The transfer device for heat treatment of aluminum coils as described in claim 6, characterized in that, A buffer pad is installed on the top of the limiting block (6-7).

8. The transfer device for heat treatment of aluminum coils as described in claims 5 to 7, characterized in that, The telescopic cylinder (6-5) and the fan-shaped swing arm (6-1) of the same deflection assembly are both spaced apart.

9. The transfer device for heat treatment of aluminum coils as described in claim 1, characterized in that, The lifting device (7) includes: The base (7-1) has a frame structure and the length of the base (7-1) is greater than the width of the lifting device (5); The support plates (7-2) are two symmetrically arranged, and the two support plates (7-2) are inclinedly hinged to the base (7-1).

10. The transfer device for heat treatment of aluminum coils as described in claim 1, characterized in that, It also includes a ground rail (1) installed on the ground outside the heat treatment furnace, and a flatbed cart (2) travels along the ground rail (1); a fixed track (9) is installed on the support frame (8), and the telescopic device (3) can travel along the fixed track (9) when it extends into the heat treatment furnace.

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