Multi-structure linkage transfer mechanism and method of stainless steel heat treatment processing line

Abstract

The present application relates to the technical field of stainless steel heat treatment, in particular to a multi-structure linkage transfer mechanism and method of a stainless steel heat treatment processing line, comprising a trolley, the trolley is provided with a support plate composed of a plurality of beam plates, a fixing assembly is installed in the middle of the beam plate, and a support assembly is arranged at the front end of the middle of the beam plate; the fixing assembly is composed of an expansion tank, an expansion rod and a clamping plate; the support assembly is composed of a supporting leg and a second spring, and the two supporting legs and the foremost end movable rod are connected through a second transmission structure. The fixing assembly is arranged, the clamping plate is clamped and fixed by the heat of the stainless steel plate during the transfer, the supporting leg is driven to pop out to support the sliding platform at the same time, the risk of deformation is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of stainless steel heat treatment technology, specifically a multi-structure linkage transfer mechanism and method for stainless steel heat treatment processing lines. Background Technology

[0002] In the stainless steel plate processing technology, trolleys are usually required for transfer. That is, trolleys are used to transfer stainless steel plates between operations such as furnace heating, quenching, reheating, and cooling in the processing line. Usually, the floor of the processing plant is equipped with slide rails for the trolleys to move. The trolleys are also equipped with sliding platforms and gantry frames. The entry and exit of stainless steel plates are controlled by the linkage of various structures.

[0003] For example, patent application CN121915230A discloses a high-efficiency heat treatment method for a trolley furnace with dual-trolley transfer coordination in the field of heat treatment technology. It includes equipment composition and optimized design, core heat treatment steps, in-furnace heat treatment process, efficient connection between furnace exit transfer and alternating furnace entry, and cyclic operation and dynamic adjustment optimization. It achieves a dual breakthrough in furnace utilization and production efficiency: through the coordinated design of dual trolleys and intelligent transfer vehicles, the charging, heat treatment and cooling processes can be carried out in parallel. When one trolley is performing heat treatment in the furnace, the other trolley can be loaded and ready at the same time, completely eliminating the furnace idle waiting time.

[0004] Based on the above cases and actual situations, we have found the following problems: In the existing technology, when the trolley is transferring stainless steel plates on the heat treatment processing line, the sliding platform used to place the stainless steel plates is usually designed to be cantilevered so that it can extend into each furnace. However, stainless steel plates are subjected to high temperatures and have a large mass during heat treatment. After long-term and repeated use, the outer end of the cantilevered sliding platform may bend downward, increasing the risk of the stainless steel plates slipping during transfer and affecting the service life of the sliding platform. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-structure linkage transfer mechanism and method for stainless steel heat treatment processing lines. By setting up a fixing component and a support component, the stainless steel plate itself is driven by heat to clamp and fix the plate during transfer, while the support legs are driven to pop out to support the sliding platform, thereby solving the above-mentioned problems of the prior art.

[0006] To achieve the above objectives, the present invention provides a multi-structure linkage transfer mechanism for a stainless steel heat treatment processing line, including a trolley that moves along the stainless steel plate heat treatment processing line. The trolley is provided with a support plate composed of several beams installed at intervals. Several fixed components are regularly distributed in the middle of the beams for clamping the stainless steel plate during transfer. A support component is provided in the middle of the front end of the beam for supporting the cantilever end of the beam. The fixing assembly consists of an expansion box, movable rods on both sides of the expansion box, and clamping plates that are connected to the movable rods on both sides through a first transmission structure. The expansion box is filled with gas that expands when heated, which is used to drive the movable rods on both sides to extend outward and drive the clamping plates on both sides to move towards each other to clamp the stainless steel plate when transferring the stainless steel plate. The support assembly consists of two legs on the left and right, and two second springs located on the outer sides of the corresponding legs. The two legs are connected to the movable rod near the front end of the beam plate through a second transmission structure. When the movable rod, which cooperates with the support assembly, extends outward, the second transmission structure drives the legs to rotate clockwise and tilt forward, stretching the second springs. At this time, the second springs provide a clockwise pulling force to the legs, which then abut against the trolley for lifting and support. When the stainless steel plate is fed into the processing equipment, the bottom of the processing equipment door pushes the legs to rotate counterclockwise, and the pulling force of the second springs retracts the legs to a horizontal position.

[0007] In this design, considering that in existing technologies, when stainless steel plates are transferred on a heat treatment line via a trolley, the sliding platform used to hold the plates is typically cantilevered to extend into each furnace. However, stainless steel plates are subjected to high temperatures and have a large mass during heat treatment. After prolonged and repeated use, the cantilevered sliding platform may exhibit downward deflection, increasing the risk of the stainless steel plates slipping during transfer and affecting the service life of the sliding platform. Therefore, this invention incorporates a fixing component that uses the heat of the stainless steel plate itself to drive clamping plates for fixation during transfer, while simultaneously driving outriggers to extend and support the sliding platform, reducing the risk of deformation and extending its service life.

[0008] In the technical solution of the present invention, the trolley is provided with a sliding platform, the sliding platform and the trolley are slidably connected by a drag chain, the sliding platform is provided with a gantry frame for controlling the up and down sliding of the support plate, and the rear ends of several beams are fixedly connected to the same connecting plate, the connecting plate is slidably connected to the left and right side supports of the gantry frame.

[0009] In this setup, the sliding platform and gantry are coordinated to drive the support plate to slide forward and backward and up and down, thereby enabling the placement and retraction of the stainless steel plate.

[0010] In the technical solution of the present invention, the beam plate is generally designed as a racetrack with a hollow center. Several fixing components are regularly arranged along the long side of the beam plate. The fixing components are separated by a partition plate. The upper and lower surfaces of the expansion box are fixed to the upper and lower inner surfaces of the beam plate.

[0011] In this setup, the beam is divided into multiple independent mounting cavities by a partition plate. Each mounting cavity contains a set of fixing components, allowing each set of fixing components to work independently without interfering with each other.

[0012] In the technical solution of the present invention, a piston is coaxially fixed to the inner end of the movable rod, a groove adapted to the piston is provided in the expansion box, the expansion gas is filled between the two pistons in the same groove, an outwardly protruding extension is fixed to the outer wall of the movable rod, a slide rod is coaxially slidably connected to the outer end of the movable rod, and the outer end of the slide rod is fixed to the dividing plate at the corresponding position.

[0013] In this setup, pistons and chutes are used. High-purity nitrogen is filled into the chutes as a thermal expansion medium and is placed between two pistons in the same chutes to form a sealed drive chamber. During transport, the thermal expansion medium expands due to heat, which drives the movable rods on both sides to extend outward and causes the clamping plates on both sides to move towards each other to clamp the stainless steel plate.

[0014] In the technical solution of the present invention, the first transmission structure consists of a first toothed plate, a first gear, and a second toothed plate from bottom to top. The first toothed plate and the second toothed plate are respectively meshed with the same first gear. The first toothed plate is fixed on the wall of the movable rod and faces upward. The first gear is installed in the middle of the beam plate through a bracket plate rotatably connected on both sides. The clamping plate is fixed on the inner end of the upper surface of the second toothed plate. An opening is provided on the beam plate for sliding corresponding to the clamping plate.

[0015] In this configuration, by setting up a first transmission structure, when the nitrogen gas in the chute expands due to heat, the movable rod extends outward and drives the two clamping plates to clamp the workpiece in opposite directions through the first toothed plate, the first gear, and the second toothed plate.

[0016] In the technical solution of the present invention, the front and rear ends of the left and right side walls of the second toothed plate are fixed with limit blocks, the inner top surface of the beam plate is provided with a limit groove adapted to the limit block, the limit block and the corresponding limit groove are slidably connected, the front and rear inner walls of the limit groove are fixed with a limit rod, and the portion of the limit rod located between the inner limit block and the inner wall of the limit groove is fitted with a first spring.

[0017] In this setup, a limiting block is used to support and limit the entire second toothed plate and clamping plate. A first spring is used so that when the workpiece cools down, the nitrogen gas contracts, and the first spring pushes the limiting block to reset, causing the clamping plate to loosen and the movable rod to retract.

[0018] In the technical solution of the present invention, the second transmission structure includes two left and right supports fixed on the inner bottom surface of the beam plate near the front end, a second gear and a third gear rotatably connected between the two supports, and a third toothed plate meshing with the third gear. The third toothed plate is fixed on the wall of the movable rod and is arranged downwards. The third gear is arranged between the second gear and the third toothed plate.

[0019] In this configuration, by setting a second transmission structure, when the outermost movable rod extends outward, it sequentially drives the support leg to rotate clockwise and tilt forward through the third toothed plate, the third gear, and the second gear, so that the support leg abuts against the trolley for support.

[0020] In the technical solution of the present invention, the left and right ends of the shaft of the second gear are coaxially fixed with rotating plates, the inner end of the support leg is coaxially fixedly connected with the corresponding rotating plate, the top surface of the beam plate is fixed with two mounting brackets at the front end, the top ring of the second spring is rotatably connected with the corresponding mounting bracket, the bottom ring is rotatably connected with the middle section of the support leg, the top ring of the second spring and the center of the rotating plate are located on the same vertical line, the bottom surface of the beam plate is provided with a slot for the support leg to rotate out at the front end, and the trolley is fixed with a support beam at the front end for abutting and supporting the support leg.

[0021] In this setup, by incorporating a second spring, when the stainless steel plate is fed into the processing equipment, the bottom of the processing equipment door pushes the support leg to rotate counterclockwise, and the pull of the second spring retracts the support leg to a horizontal position, thus preventing obstruction of the sliding platform's movement.

[0022] In the technical solution of the present invention, a horizontally extending baffle is fixed on the inner side of the support, and a clamping plate adapted to the baffle is fixed on the inner side of the rotating plate.

[0023] In this configuration, by setting up baffles and locking plates, when the outrigger rotates counterclockwise to the horizontal position, the locking plates abut against the baffles, limiting the maximum rotation angle of the outrigger and preventing excessive rotation that could cause it to impact the beam.

[0024] It should be noted that all components of this invention are made of high-temperature resistant steel.

[0025] On the other hand, the present invention also provides a multi-structure linkage transfer method for a stainless steel heat treatment processing line, which adopts the above-mentioned multi-structure linkage transfer mechanism for a stainless steel heat treatment processing line and includes the following steps: S1. The stainless steel plate to be processed is hoisted between two clamps of the same fixed component. The trolley is started and moved along the heat treatment processing line. When the trolley moves to the heating furnace, the furnace door is opened. The support plate and stainless steel are sent into the furnace by drag chain. The hydraulic device on the gantry is started to drive the support plate down. At this time, the stainless steel is separated from the beam plate and remains in the furnace. Then the support plate is retracted by drag chain. S2. After heating is complete, open the furnace door, put the support plate back in, and then move the support plate up to separate the stainless steel plate from the bottom of the furnace. The support plate supports the stainless steel plate. Then, retract the support plate. At this time, the temperature of the stainless steel plate is high, and it transfers heat to the expansion box, causing the gas inside to expand and drive the movable rods on both sides to extend outward. Then, through the sequential transmission of the first toothed plate, the first gear, and the second toothed plate, the corresponding clamping plates move towards each other to clamp the stainless steel plate and ensure the stability of the stainless steel plate during transfer. S3. When the movable rod extends outward to contact the third gear with the third tooth plate, it drives the third gear to rotate counterclockwise, which in turn drives the second gear to rotate clockwise. This, in turn, drives the rotating plate and the support leg to rotate clockwise synchronously by more than 90° and less than 130°. At this time, the support leg pops out to support the cantilever end of the beam plate at an angle, thus preventing the beam plate from deforming due to heat. S4. Then the trolley moves to the quenching tank again. When the support plate moves to the point where the legs contact the bottom of the quenching tank, push the legs to rotate counterclockwise to reset. After placing the stainless steel plate into the quenching tank, retract the support plate. The placement operation is the same as step S1. S5. After quenching, the stainless steel plate is reattached to the support plate, and the trolley is moved to the tempering furnace for tempering. The placement operation is the same as in step S1. After quenching, the stainless steel plate is reattached, and the reattachment operation is the same as in step S2. The stainless steel plate is transferred on the heat treatment processing line in this way.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by setting a fixing component, the residual heat during the heat treatment of the stainless steel plate is used to drive multiple sets of clamping plates to clamp synchronously in opposite directions, thereby achieving multi-point uniform clamping of the stainless steel plate. This effectively prevents the high-temperature workpiece from shifting or moving during the transfer process, and avoids plastic deformation caused by excessive local stress in the beam plate due to uneven load distribution.

[0027] 2. In this invention, by setting up a support component, while the clamping plates clamp in opposite directions, the outriggers are driven to rotate clockwise and pop out, forming an oblique rigid support structure. This directly transfers the load at the cantilever end of the beam to the trolley body, significantly reducing the bending stress at the root of the beam, reducing the risk of high-temperature flexural deformation of the cantilever beam, and reducing the safety risk of workpiece slippage caused by beam deformation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the beam and connecting plate of the present invention; Figure 3 This is a schematic diagram of the beam plate in this invention; Figure 4 This is a partial sectional view of the beam-slab in this invention; Figure 5 This is another partial sectional view of the beam-slab in this invention; Figure 6 This is a schematic diagram of the fixing component in this invention; Figure 7 This is a schematic diagram of the support components in this invention; Figure 8 This is an exploded view of the support component in this invention; Figure 9 This is a schematic diagram of the outriggers in the open state in this invention; Explanation of reference numerals in the attached figures: 100. Trolley; 101. Sliding platform; 102. Gantry frame; 103. Support beam; 200. Beam and slab; 201. Connecting plate; 300. Fixed assembly; 301. Expansion box; 3011. Slide groove; 302. Movable rod; 3021. Piston; 303. Clamping plate; 310. First transmission structure; 311. First gear plate; 312. First gear; 313. Second gear plate; 314. Limiting block; 315. Limiting rod; 316. First spring; 400, Support assembly; 401, Support leg; 402, Second spring; 410, Second transmission structure; 411, Third gear plate; 412, Second gear; 413, Support; 4131, Baffle; 414, Rotating plate; 4141, Clamping plate; 415, Third gear. Detailed Implementation

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0030] Unless otherwise expressly stated, throughout this specification, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0031] Reference Figures 1-9 As shown, this embodiment provides a technical solution: A multi-structure linkage transfer mechanism for a stainless steel heat treatment processing line includes a trolley 100 that moves along the stainless steel heat treatment processing line. The trolley 100 is a welded steel frame structure with four sets of walking wheels with braking function installed at the bottom. It moves along the ground guide rail of the processing line and is driven by a servo motor. The specific principle is existing technology and will not be described in detail here.

[0032] Specifically, a steel sliding platform 101 is installed on the top surface of the trolley 100, and the two are connected by a drag chain to drive the support plate smoothly in and out of the heating furnace and quenching tank. A gantry frame 102 is fixed on the top surface of the sliding platform 101. Heavy-duty linear guide rails are installed on the inner sides of the columns on both sides of the gantry frame 102. The connecting plate 201 is slidably connected to the guide rails through a slider. A hydraulic cylinder is installed on the top of the gantry frame 102 to ensure the smooth lifting and placement of the workpiece. These three parts form a multi-structure linkage for transportation. The specific working principle is existing technology and will not be described in detail here.

[0033] Please see Figures 1-2 As shown, the trolley 100 is equipped with a support plate, which consists of several beams 200 arranged in parallel at equal intervals. The rear ends of all beams 200 are rigidly connected to the same connecting plate 201 by bolts, forming a cantilevered load-bearing structure. The multiple beams 200 are spaced apart and adapted to the bottom surfaces of the furnaces in the heat treatment processing line. That is, the furnace bottom surfaces are supports that are staggered with the multiple beams 200, which provide support and facilitate the placement and retraction of stainless steel plates.

[0034] The single beam 200 is shaped like a racetrack with a hollow center. Several fixing components 300 are regularly arranged along the long side of the beam 200. Multiple partition plates are welded at equal intervals along the length of the beam 200 to divide it into multiple independent installation cavities. Each installation cavity is equipped with a set of fixing components 300, so that each set of fixing components 300 can work independently and without interference.

[0035] Several regularly distributed fixing components 300 are installed in the middle of the beam 200 to clamp the stainless steel plate during transportation. A support component 400 is provided in the middle of the beam 200 near the front end to support the cantilever end of the beam 200.

[0036] Please see Figures 3-4 As shown, the fixing assembly 300 consists of an expansion box 301, movable rods 302 on both sides of the expansion box 301, and clamping plates 303 that are connected to the movable rods 302 on both sides via a first transmission structure 310. The expansion box 301 is a cuboid sealed structure, with its upper and lower surfaces welded and fixed to the inner wall of the cavity of the beam plate 200. A circular groove 3011 is opened inside, and high-purity nitrogen gas is filled in the groove 3011 as a thermal expansion medium and is filled between the two pistons 3021 in the same groove 3011 to form a sealed driving cavity. This cavity is used to drive the movable rods 302 on both sides to extend outward and drive the clamping plates 303 on both sides to move towards each other to clamp the stainless steel plate during transport.

[0037] A piston 3021 is coaxially welded to the inner end of the movable rod 302. The piston 3021 is sealed with a fluororubber sealing ring and slides in contact with the inner wall of the slide groove 3011. A protruding extension is fixed to the middle of the outer wall of the movable rod 302 to prevent rotation. A slide rod is coaxially slidably connected to the outer end of the movable rod 302. The outer end of the slide rod is welded and fixed to the dividing plate for guiding and limiting.

[0038] Please see Figures 5-6 As shown, the first transmission structure 310 consists of a first toothed plate 311, a first gear 312, and a second toothed plate 313 from bottom to top. The first toothed plate 311 is fixed to the upper surface of the extended portion of the movable rod 302, with its tooth surface facing upwards. The first gear 312 is mounted on a support plate inside the cavity of the beam plate 200 via a rotating shaft and bearings. The second toothed plate 313 has its tooth surface facing downwards and meshes with the upper side of the first gear 312. A clamping plate 303 is welded to the inner part of the upper surface of the second toothed plate, and an opening is provided on the top surface of the beam plate 200 for the clamping plate 303 to slide. Limiting blocks 314 are welded to the front and rear ends of the two side walls of the second toothed plate 313, which slide in cooperation with the limiting groove on the inner top surface of the beam plate 200. A limiting rod 315 is fixed in the limiting groove, and a first spring 316 is sleeved on the limiting rod 315, located between the inner limiting block 314 and the inner wall of the limiting groove.

[0039] When the nitrogen gas in the slide 3011 is heated and expands, the movable rod 302 extends outward and drives the two clamping plates 303 to clamp the workpiece in opposite directions through the first toothed plate, the first gear, and the second toothed plate. After the workpiece cools down, the nitrogen gas contracts, and the first spring 316 pushes the limit block 314 to reset, causing the clamping plates 303 to loosen and the movable rod 302 to retract.

[0040] Please see Figures 7-9 As shown, the support assembly 400 consists of two left and right legs 401 and two second springs 402 disposed on the outer side of the corresponding legs 401. The two legs 401 are connected to the foremost movable rod 302 through a second transmission structure 410. The legs 401 are made of thick steel plate bent into shape, and a rotating plate 414 is coaxially welded to the inner end.

[0041] A slot is provided at the front end of the bottom of the beam plate 200 for the outrigger to rotate out. Two mounting brackets are fixed to the front end of the top surface of the beam plate 200. The second spring 402 is a tension spring. The top ring of the second spring 402 is rotatably connected to the corresponding mounting bracket through a pin, and the bottom ring is rotatably connected to the middle section of the outrigger 401. The top ring of the second spring 402 and the center of the rotating plate 414 are located on the same vertical line to ensure that the direction of the torque generated by the spring tension is consistent with the direction of the outrigger 401 ejection.

[0042] When the outermost movable rod 302 extends outward, the second transmission structure 410 drives the support leg 401 to rotate clockwise and tilt forward, and stretches the second spring 402, so that the support leg 401 abuts against the front end of the slot of the trolley 100 for support. When the stainless steel plate is sent into the processing equipment, the bottom of the processing equipment door pushes the support leg 401 to rotate counterclockwise, and with the pull of the second spring 402, the support leg 401 is retracted to a horizontal state.

[0043] In addition, when the outrigger 401 rotates out clockwise, it is tilted with its bottom facing forward and its front end abutting against the front end of the slot. The trolley 100 is fixed with a support beam 103 at its front end. When the outrigger 401 rotates out, its bottom end abuts against the support beam 103 as a support.

[0044] In addition, there are two left and right supports 413 fixed to the inner bottom surface of the beam plate 200 near the front end, a second gear 412 and a third gear 415 rotatably connected between the two supports 413, and a third toothed plate 411 meshing with the third gear 415. The third toothed plate 411 is fixed to the lower surface of the outer extension of the foremost movable rod 302 with its tooth surface facing downwards. The third gear 415 is disposed between the second gear 412 and the third toothed plate 411 and meshes with both of them.

[0045] Specifically, the two ends of the shaft of the second gear 412 extend out of the support 413 and are coaxially welded to the rotating plate 414. The support leg 401 is rigidly connected to the rotating plate 414. A horizontal baffle 4131 is welded to the inside of the support 413, and a clamping plate 4141 is welded to the inside of the rotating plate 414. When the support leg 401 rotates counterclockwise to the horizontal position, the clamping plate 4141 abuts against the baffle 4131, limiting the maximum rotation angle of the support leg 401 and preventing excessive rotation from impacting the beam plate 200.

[0046] When the movable rod 302 extends outward to contact the third gear 415 with the third toothed plate 411, it drives the third gear 415 to rotate counterclockwise, which in turn drives the second gear 412 to rotate clockwise. This, in turn, drives the rotating plate 414 and the support leg 401 to rotate clockwise synchronously by more than 90° and less than 130°. At this time, the support leg 401 pops out to support the cantilever end of the inclined support beam 200, thus preventing the beam 200 from deforming due to heat, which would reduce the service life of the beam 200 and reduce the risk of transportation.

[0047] The multi-structure linkage transfer method for stainless steel heat treatment processing lines in this invention, employing the aforementioned multi-structure linkage transfer mechanism for stainless steel heat treatment processing lines, includes the following steps: S1. The stainless steel plate to be processed is hoisted between the two clamps 303 of the same fixed component 300. The trolley 100 is started and moves along the heat treatment processing line. When the trolley 100 moves to the heating furnace, the furnace door is opened. The support plate and stainless steel plate are sent into the furnace by drag chain. The hydraulic device on the gantry frame 102 is started to drive the support plate to move down. At this time, the stainless steel plate is separated from the beam plate 200 and remains in the furnace. Then the support plate is retracted by drag chain. S2. After heating is complete, open the furnace door, put the support plate back in, and then move the support plate up to separate the stainless steel plate from the bottom of the furnace. The support plate supports the stainless steel plate, and then the support plate is retracted. At this time, the temperature of the stainless steel plate is high, and it transfers heat to the expansion box 301, causing the gas inside to expand and drive the movable rods 302 on both sides to extend outward. Then, through the sequential transmission of the first toothed plate 311, the first gear 312, and the second toothed plate 313, the corresponding clamping plates 303 move towards each other to clamp the stainless steel plate and ensure the stability of the stainless steel plate during transfer. S3. When the movable rod 302 extends outward to contact the third toothed plate 411 and the third gear 415, it drives the third gear 415 to rotate counterclockwise, which in turn drives the second gear 412 to rotate clockwise. This, in turn, drives the rotating plate 414 and the support leg 401 to rotate clockwise by more than 90°. At this time, the support leg 401 pops out to support the cantilever end of the inclined support beam 200, thus preventing the beam 200 from deforming due to heat. S4. Then the trolley 100 moves to the quenching tank again. When the support plate moves to the point where the support leg 401 contacts the bottom of the quenching tank, push the support leg 401 to rotate counterclockwise to reset. After placing the stainless steel plate into the quenching tank, retract the support plate. The placement operation is the same as step S1. S5. After quenching, the stainless steel plate is reattached to the support plate, and the trolley 100 is moved to the tempering furnace for tempering. The placement operation is the same as in step S1. After quenching, the stainless steel plate is reattached, and the reattachment operation is the same as in step S2. The stainless steel plate is transferred on the heat treatment processing line in this way.

[0048] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A multi-structure linkage transfer mechanism for a stainless steel heat treatment processing line, comprising a trolley moving along the stainless steel plate heat treatment processing line, characterized in that: The trolley is equipped with a support plate consisting of several beams installed at intervals. Several fixed components are regularly distributed in the middle of the beams for clamping stainless steel plates during transportation. A support component is provided in the middle of the front end of the beam for supporting the cantilever end of the beam. The fixing assembly consists of an expansion box, movable rods on both sides of the expansion box, and clamping plates that are connected to the movable rods on both sides through a first transmission structure. The expansion box is filled with gas that expands when heated. When transferring stainless steel plates, the gas expands and drives the movable rods on both sides to extend outward and move the clamping plates on both sides towards each other to clamp the stainless steel plates. The support assembly consists of two legs on the left and right, and two second springs located on the outer sides of the corresponding legs. The two legs are connected to the movable rod near the front end of the beam plate via a second transmission structure. When the movable rod, which cooperates with the support assembly, extends outward, the second transmission structure drives the legs to rotate clockwise and tilt forward, stretching the second springs. At this time, the second springs provide a clockwise pulling force to the legs, which then abut against the trolley for lifting and support. When the stainless steel plate is fed into the processing equipment, the bottom of the processing equipment door pushes the legs to rotate counterclockwise, and the pulling force of the second springs retracts the legs to a horizontal state.

2. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 1, characterized in that: The trolley is equipped with a sliding platform, which is slidably connected to the trolley by a drag chain. The sliding platform is equipped with a gantry frame that controls the up and down sliding of the support plate. The rear ends of several beams are fixedly connected to the same connecting plate, which is slidably connected to the left and right side supports of the gantry frame.

3. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 2, characterized in that: The beam plate is shaped like a racetrack with a hollow center. Several fixing components are regularly arranged along the long side of the beam plate, and the fixing components are separated by partition plates. The upper and lower surfaces of the expansion box are fixed to the upper and lower inner surfaces of the beam plate.

4. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 3, characterized in that: A piston is coaxially fixed to the inner end of the movable rod. The expansion box is provided with a groove adapted to the piston. The expanding gas is filled between the two pistons in the same groove. An outwardly protruding part is fixed to the outer wall of the movable rod. A slide rod is slidably connected to the outer end of the movable rod. The outer end of the slide rod is fixed to the dividing plate at the corresponding position.

5. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 4, characterized in that: The first transmission structure consists of a first toothed plate, a first gear, and a second toothed plate from bottom to top. The first toothed plate and the second toothed plate are respectively meshed with the same first gear. The first toothed plate is fixed on the wall of the movable rod and faces upward. The first gear is installed in the middle of the beam plate through a bracket plate rotatably connected to both sides. The clamping plate is fixed on the inner end of the upper surface of the second toothed plate. An opening is provided on the beam plate for sliding of the clamping plate.

6. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 5, characterized in that: Limiting blocks are fixed at both ends of the left and right sidewalls of the second toothed plate. The inner top surface of the beam plate is provided with a limiting groove that matches the limiting block. The limiting block and the corresponding limiting groove are slidably connected. A limiting rod is fixed between the inner walls of the limiting groove and the portion of the limiting rod located between the inner limiting block and the inner wall of the limiting groove is fitted with a first spring.

7. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 6, characterized in that: The second transmission structure includes two left and right supports fixed to the inner bottom surface of the beam plate near the front end, a second gear and a third gear rotatably connected between the two supports, and a third gear plate meshing with the third gear. The third gear plate is fixed to the wall of the movable rod and is arranged downwards. The third gear is arranged between the second gear and the third gear plate.

8. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 7, characterized in that: The second gear has rotating plates fixed coaxially at both ends of its shaft. The inner end of the support leg is fixedly connected coaxially to the corresponding rotating plate. Two mounting brackets are fixed to the front end of the top surface of the beam plate. The top ring of the second spring is rotatably connected to the corresponding mounting bracket, and the bottom ring is rotatably connected to the middle section of the support leg. The top ring of the second spring and the center of the rotating plate are located on the same vertical line. The bottom surface of the beam plate has a slot for the support leg to rotate out near the front end. The trolley has a support beam fixed to the front end for abutting and supporting the support leg.

9. The multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 8, characterized in that: A horizontally extending baffle is fixed to the inner side of the support, and a clamping plate adapted to the baffle is fixed to the inner side of the rotating plate.

10. A multi-structure linkage transfer method for a stainless steel heat treatment processing line, employing the multi-structure linkage transfer mechanism of the stainless steel heat treatment processing line as described in claim 9, characterized in that... Includes the following steps: S1. The stainless steel plate to be processed is hoisted between two clamps of the same fixed component. The trolley is started and moved along the heat treatment processing line. When the trolley moves to the heating furnace, the furnace door is opened. The support plate and stainless steel plate are sent into the furnace by drag chain. The hydraulic device on the gantry is started to drive the support plate down. At this time, the stainless steel plate is separated from the beam plate and left in the furnace. Then the support plate is retracted by drag chain. S2. After heating is complete, open the furnace door, put the support plate back in, and then move the support plate up to separate the stainless steel plate from the bottom of the furnace. The support plate supports the stainless steel plate. Then, retract the support plate. At this time, the temperature of the stainless steel plate is high, and it transfers heat to the expansion box, causing the gas inside to expand and drive the movable rods on both sides to extend outward. Then, through the sequential transmission of the first toothed plate, the first gear, and the second toothed plate, the corresponding clamping plates move towards each other to clamp the stainless steel plate and ensure the stability of the stainless steel plate during transfer. S3. When the movable rod extends outward to contact the third gear plate, it drives the third gear to rotate counterclockwise, which in turn drives the second gear to rotate clockwise. This, in turn, drives the rotating plate and the support leg to rotate clockwise synchronously by more than 90° and less than 130°. At this time, the support leg pops out to support the cantilever end of the beam plate at an angle, thus preventing the beam plate from deforming due to heat. S4. Then the trolley moves to the quenching tank again. When the support plate moves to the point where the legs contact the bottom of the quenching tank, push the legs to rotate counterclockwise to reset. After placing the stainless steel plate into the quenching tank, retract the support plate. The placement operation is the same as step S1. S5. After quenching, the stainless steel plate is reattached to the support plate, and the trolley is moved to the tempering furnace for tempering. The placement operation is the same as in step S1. After quenching, the stainless steel plate is reattached, and the reattachment operation is the same as in step S2. The stainless steel plate is transferred on the heat treatment processing line in this way.

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