Large heavy workpiece conveying system for intelligent production line of heat treatment furnace

Abstract

The invention belongs to the technical field of conveying devices, and particularly relates to a large heavy workpiece conveying system for an intelligent production line of a heat treatment furnace. A T-shaped sliding part is arranged at the lower end of the bearing block, and the T-shaped sliding part is in sliding connection with the interior of a T-shaped sliding groove in the adjusting block; according to the invention, the bearing block and the adjusting block in the bearing part can slide relatively, so that after a part subjected to heat treatment deforms due to high temperature in the heat treatment process, the part subjected to heat treatment can push the bearing block to slide relative to the adjusting block along the horizontal direction; a T-shaped sliding part arranged at the lower end of the bearing block slides in a T-shaped sliding groove in the adjusting block to compensate the displacement amount, so that it is ensured that the lower end of the adjusting block does not generate displacement change with the conveying component, and the lower end of the adjusting block can stably and smoothly convey and move on the conveying component; and therefore, the fluency and the stability of the conveying system are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying devices, and in particular relates to a large-scale heavy workpiece conveying system for an intelligent production line of a heat treatment furnace. Background Art

[0002] In the actual production process of heat treatment furnaces, each batch of metal parts undergoing heat treatment is large in number and heavy in weight. In order to facilitate the delivery of metal parts into the furnace, a rolling conveyor is usually used to transport the products. Specifically, two parallel roller racks are set up, and rotatable rollers or wheels are set on the two roller racks. When the rollers or wheels rotate, the friction force can drive the objects above the rollers or wheels to move. Although this roller structure can achieve the transportation effect, when the roller is used in the production line of the heat treatment furnace, the following technical problems will occur: During transportation, parts are placed on pallets. Therefore, if the parts being transported are large and heavy, such as automobile front axles, crankshafts, drive shafts, piston rods, bridge housings, and other heavy and large parts, the pallet carrier must be designed to be larger. To ensure the strength of the carrier, the pallet thickness will also be thicker. In addition, the roller conveyor needs to carry the parts into the heat treatment furnace and then take the parts out of the furnace after the heat treatment is completed. Therefore, during the process of taking the parts out of the furnace, the pallet will take out a large amount of heat, resulting in a large amount of heat loss in the furnace.

[0003] The integrated tray deforms in the heat treatment furnace due to the high temperature and the weight of the heavy parts, which in turn affects the smoothness of the transmission between the tray and the rollers.

[0004] In order to solve the above technical problems, the prior art involves a patent title: Large heavy workpiece support and conveying system for automatic production line of heat treatment furnace, patent application number: 2024112207393; the support and conveying system includes a support assembly and a track assembly located above the support assembly; the track assembly includes at least two sets of roller frames installed above the support assembly, the roller frames are arranged parallel to each other, and rollers are rotatably connected to the roller frames. Each roller is independently provided with a support block, which is arranged along the conveying direction of the roller, and each support block spans at least two rollers; the outer periphery of the roller is provided with an annular groove, and the bottom of the support block is provided with a downwardly protruding limiting rib, the limiting rib is located in the annular groove, and the annular groove is used to guide the limiting rib; the width of the support block is smaller than the width of the roller. This transmission system can be used in high-temperature environments, not only to achieve smooth conveying of parts, but also to reduce heat loss in the heat treatment furnace, effectively reducing energy consumption costs.

[0005] Although this support and conveying system solves the above technical problems, the limiting ribs and the rollers are in contact through right-angled notches. If the two are tightly fitted under this technical method, when the heat-treated parts deform due to high temperature during the heat treatment process, the two limiting ribs will be pushed to squeeze the sides of the right-angled notches of the rollers, and the two will be axially squeezed, resulting in poor transmission. If the two are loosely fitted, the width of the support block in this solution is relatively small, which makes the stability between the limiting ribs and the rollers poor, and it is easy to tip over, which in turn affects the stability of the conveying. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention proposes a large, heavy workpiece conveying system for an intelligent production line in a heat treatment furnace. This invention primarily addresses the problem of existing integrated pallets deforming due to the high temperatures and weight of large, heavy parts within the heat treatment furnace, which can cause the pallet and rollers to skew, leading to friction and even jamming.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the present invention provides a large heavy workpiece conveying system for an intelligent production line of a heat treatment furnace, comprising a bearing component, a conveying component symmetrically arranged below the bearing component, and a base below the conveying component; the bearing component comprises a bearing block and an adjusting block; the bearing block and the adjusting block are both symmetrically arranged; a T-shaped sliding part is provided at the lower end of the bearing block, and the T-shaped sliding part is slidably connected in the T-shaped sliding groove on the adjusting block; the lower end of the adjusting block is conveyed and moved on the conveying component.

[0008] By arranging the bearing block and the adjusting block in the bearing component to slide relative to each other, when the heat-treated parts are deformed due to high temperature during the heat treatment process, the heat-treated parts can slide relative to the adjusting block by pushing the bearing block in the horizontal direction, and then the T-shaped sliding part arranged at the lower end of the bearing block slides in the T-shaped sliding groove on the adjusting block to compensate for the displacement, thereby ensuring that the lower end of the adjusting block will not be displaced from the conveying component, and the lower end of the adjusting block can be transported and moved smoothly on the conveying component, thereby improving the fluency and stability of the conveying system.

[0009] Preferably, the bearing component further includes a sliding rod; a guide hole is provided through the upper end of the bearing block; and both ends of the sliding rod are respectively slidably connected to the guide holes on the two bearing blocks.

[0010] By setting a sliding rod between the two supporting blocks, the vertical position of the two supporting blocks is limited by the sliding rod. Because the sliding rod and the supporting blocks are in sliding connection, when the heat-treated parts are deformed due to high temperature during the heat treatment process, the heat-treated parts can push the supporting blocks to slide along the sliding rod. The setting of the sliding rod not only does not affect the sliding of the supporting blocks, but also can limit the relative position between the two supporting blocks, thereby limiting the vertical parallelism of the two supporting blocks before the heat-treated parts are placed, thereby ensuring that the heat-treated parts can be smoothly pushed to slide along the adjustment block after being heated and deformed, and there will be no jamming, thereby improving the smoothness of transportation.

[0011] Preferably, the conveying component includes a support block, a mounting groove, a roller, a bearing and a drive unit; the support block is symmetrically arranged on the base; a stepped groove is arranged on the upper end surface of the support block, and the lower end of the mounting groove is inserted into the stepped groove; aluminum silicate fiber and microporous ceramic composite insulation material are arranged in the stepped groove; the rollers are evenly spaced along the length direction of the mounting groove at the upper end of the mounting groove; the rollers are installed on the mounting groove through the bearing; and the drive unit is used to drive the rollers to rotate.

[0012] By setting the mounting groove and the support block separately, and setting aluminum silicate fiber and microporous ceramic composite insulation material between the two, the heat absorbed by the load-bearing components during the heat treatment process is isolated, thereby preventing the heat from being transferred downward and causing deformation of the conveying components and the base, which in turn causes friction or even jamming of the transmission components, thereby improving the smoothness and stability of the conveying system and indirectly increasing the service life of the conveying system.

[0013] Preferably, an annular V-shaped groove is provided on the cylindrical surface of the roller; an arc-shaped guide portion is provided at the lower end of the adjustment block; and three-point contact is formed between the guide portion and the V-shaped groove.

[0014] By setting up three-point contact between the lower end of the adjustment block and the roller, on the one hand, the point contact can greatly reduce the heat transferred from the load-bearing component to the conveying component, thereby preventing the conveying component and the base from being deformed after the heat is transferred downward, and then causing friction or even jamming of the transmission component, thereby improving the smoothness and stability of the conveying system; on the other hand, the three-point contact can also maximize the supporting force, thereby meeting the conveying requirements of large and heavy workpieces.

[0015] Preferably, the conveying component also includes a synchronous transmission unit; the synchronous transmission unit includes a driving chain, a synchronous sprocket, an upper tensioning frame, an upper tensioning wheel, a lower tensioning frame, a lower tensioning wheel, a synchronous gear and a driving mechanism; one end of the wheel axle of the roller is connected to the synchronous sprocket; the driving chain is overlapped on all rollers; an upper tensioning frame is arranged above the roller; the upper tensioning wheels are evenly spaced on the upper tensioning frame; the upper tensioning wheel is rotatably connected to the lower end of the upper tensioning frame through a first mounting plate; a lower tensioning frame is arranged below the roller; and the lower tensioning frame is evenly spaced. The lower tensioning wheels are arranged at even intervals; the lower tensioning wheels are rotatably connected to the upper end of the upper tensioning frame through a second mounting plate; vertical racks are provided at both ends of the upper tensioning frame and the lower tensioning frame, and the racks on the upper tensioning frame and the racks on the lower tensioning frame achieve synchronous movement toward each other by simultaneously engaging with the synchronous gear; the synchronous gear is rotatably connected to the mounting groove through a mounting seat; the upper tensioning frame and the lower tensioning frame are both mounted on the support block through sliding guide rails; the driving mechanism is used to drive the lower tensioning frame to move vertically.

[0016] Because the rollers and bearings are exposed to high temperatures and high pressures for a long time, they are more likely to be damaged, resulting in long maintenance times and affecting the efficiency of the heat treatment furnace. The method of driving all synchronous sprockets through the entire drive chain can quickly release the drive chain from the synchronous sprockets when the rollers and bearings are damaged, making it easier to quickly replace and repair them, greatly improving the efficiency of maintenance and ensuring the overall efficiency of the heat treatment furnace. In this case, the upper and lower tensioning pulleys are symmetrically arranged, which not only allows the drive chain to be quickly tensioned and relaxed, but also allows the drive chain to wrap around each synchronous sprocket in a longer arc, thereby increasing the meshing of the drive chain and the synchronous sprocket gears, thereby ensuring sufficient driving force between the drive chain and the synchronous sprocket, and improving the stability of the conveying system. During operation, the driving mechanism drives the lower tensioning frame to move up and down, and because the rack on the upper tensioning frame and the rack on the lower tensioning frame are engaged with the synchronous gear at the same time, the upper tensioning frame and the lower tensioning frame are synchronized and move toward each other, thereby driving the upper tensioning wheel and the lower tensioning wheel to tighten and loosen the drive chain.

[0017] Preferably, a hanging bracket is provided below the upper tensioning wheel; the upper end of the hanging bracket is connected to the upper tensioning frame; and the lower end of the hanging bracket is provided with an L-shaped or U-shaped supporting portion.

[0018] By arranging a hanging bracket under the upper tensioning wheel, when the upper tensioning bracket leads the upper tensioning wheel to loosen the tension on the drive chain, the drive chain can be lifted by the supporting part extended under the drive chain, so that the upper tensioning wheel can also hang the drive chain away from the synchronous sprocket after loosening the tension on the drive chain, and there is no need to remove the drive chain to disassemble the synchronous sprocket. In addition, since the drive chain is a double-row chain in actual use, it is also difficult to remove it manually, which greatly facilitates the replacement of rollers and bearings and improves the convenience of maintenance.

[0019] Preferably, a protruding structure is provided on the upper surface of the supporting portion.

[0020] By providing a raised structure on the upper surface of the supporting portion, which can be columnar or tooth-shaped, when the hanging bracket lifts the drive chain, the raised structure on the supporting portion is inserted between the links of the drive chain, thereby preventing the drive chain from moving after being lifted, and causing the meshing position to be misaligned when the drive chain and the synchronous sprocket re-engage, thereby affecting the meshing. Positioning by the raised structure on the supporting portion can well solve this technical problem, thereby ensuring the accuracy of re-engagement and the stability of the tensioning and loosening process. It should be noted that when the upper tensioning wheel is tensioning the drive chain, the raised structure on the supporting portion is not inserted between the links of the drive chain. Only when it is necessary to lift the chain, the raised structure on the supporting portion is inserted between the links of the drive chain.

[0021] Preferably, the driving mechanism includes a rotating rod, a synchronous chain, a connecting sprocket and a fixed seat; the lower tensioning frame is connected to several rotating rods through a threaded pair; the rotating rod is rotatably connected to the support block through a fixed seat; the two adjacent rotating rods are connected and transmitted through the connecting sprocket and the synchronous chain; the end of the rotating rod is provided with a driving structure for plug-in.

[0022] By setting up several rotating rods to synchronously drive the movement of the lower tensioning frame, it can be ensured that the longer lower tensioning frame can be moved stably. When in use, it is only necessary to insert a wrench into the end of the rotating rod, and then by twisting one of the rotating rods, all the rotating rods can be rotated synchronously under the action of the synchronous chain and the connecting sprocket, and then the lower tensioning frame is driven to move up and down stably through the threaded pair.

[0023] Preferably, the bearing is connected to the side wall of the installation slot via a plug-in plate; a plug-in slot is vertically arranged on the plug-in plate; and a vertical slot is arranged on the side wall of the installation slot.

[0024] The bearing is connected to the side wall of the mounting groove through the plug-in plate, so that the bearing can be quickly installed and disassembled, thereby greatly improving the replacement efficiency of the roller and the bearing.

[0025] Preferably, clamping blocks are symmetrically arranged on both sides of the bottom of the plug-in slot of the plug-in board; the clamping block is a C-shaped structure, and the middle part of the clamping block is rotatably connected to the side wall of the mounting slot; the lower end of the clamping block abuts against the upper end of the compression spring; the lower end of the compression spring is connected to the plug-in board.

[0026] By symmetrically placing clamping blocks on both sides of the bottom of the plug-in slot of the plug-in plate, when the bearing is placed in the plug-in slot, the lower end of the bearing presses against the lower end of the clamping block, which then rotates around the central hinge point, causing the upper end of the clamping block to clamp the side wall of the bearing. This automatically clamps the bearing, preventing the conveying system from being unstable due to bearing vibration during conveying, thereby improving the stability of the conveying system. The clamping block can also be automatically unlocked by the action of the compression spring, thereby ensuring the rapid removal of the bearing.

[0027] The beneficial effects of the present invention are as follows: 1. The present invention provides a bearing block and an adjusting block in a bearing component so that they can slide relative to each other. When a heat-treated part is deformed due to high temperature during the heat treatment process, the heat-treated part can push the bearing block to slide relative to the adjusting block in the horizontal direction, and then utilize the T-shaped sliding portion provided at the lower end of the bearing block to slide in the T-shaped sliding groove on the adjusting block to compensate for the displacement, thereby ensuring that the lower end of the adjusting block will not be displaced from the conveying component, so that the lower end of the adjusting block can be transported and moved smoothly on the conveying component, thereby improving the fluency and stability of the conveying system.

[0028] 2. The present invention sets a sliding rod between the two supporting blocks, thereby limiting the vertical position of the two supporting blocks through the sliding rod. Because the sliding rod and the supporting blocks are in sliding connection, when the heat-treated parts are deformed due to high temperature during the heat treatment process, the heat-treated parts can push the supporting blocks to slide along the sliding rod. The setting of the sliding rod not only does not affect the sliding of the supporting blocks, but also can limit the relative position between the two supporting blocks, thereby limiting the vertical parallelism of the two supporting blocks before the heat-treated parts are placed, thereby ensuring that the heat-treated parts can be smoothly pushed to slide along the adjusting block after being heated and deformed, and no jamming will occur, thereby improving the smoothness of transportation.

[0029] 3. The present invention uses the entire drive chain to drive all synchronous sprockets, which can quickly release the drive chain from the synchronous sprockets when the rollers and bearings are damaged, thereby facilitating rapid replacement and maintenance, greatly improving maintenance efficiency and ensuring the overall working efficiency of the heat treatment furnace. In this case, the upper and lower tensioning pulleys are symmetrically arranged, which not only allows for rapid tensioning and loosening of the drive chain, but also allows for a longer arc wrapped around each synchronous sprocket, thereby increasing the meshing of the drive chain and the synchronous sprocket gears, thereby ensuring sufficient driving force between the drive chain and the synchronous sprockets, and thus improving the stability of the conveying system.

[0030] 4. The present invention provides a hanging bracket below the upper tensioning wheel, so that when the upper tensioning bracket brings the upper tensioning wheel to release the tension on the drive chain, the drive chain can be lifted by the supporting portion extending below the drive chain, so that the upper tensioning wheel can also hang the drive chain away from the synchronous sprocket after releasing the tension on the drive chain, and there is no need to remove the drive chain to disassemble the synchronous sprocket. In addition, since the drive chain is a double-row chain in actual use, it is also difficult to remove it manually, which greatly facilitates the replacement of rollers and bearings and improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the conveying system of the present invention; Figure 2 yes Figure 1 A partial enlarged view of point A in the middle; Figure 3 It is a structural diagram of the synchronous transmission unit in the present invention; Figure 4 It is a right side view of the conveying system of the present invention; Figure 5 yes Figure 4 A partial enlarged view of point C in the middle; Figure 6 yes Figure 2 A partial enlarged view of point B in the middle; Figure 7 It is a structural diagram of the adjustment block in the present invention; Figure 8 It is a structural schematic diagram of the bearing block in the present invention; Figure 9 It is a structural schematic diagram of the hanging bracket in the present invention; In the figure: bearing component 1, bearing block 11, adjusting block 12, sliding rod 13, conveying component 2, support block 21, stepped groove 211, mounting groove 22, roller 23, bearing 24, synchronous transmission unit 25, driving chain 251, synchronous sprocket 252, upper tensioning frame 253, upper tensioning wheel 254, lower tensioning frame 255, lower tensioning wheel 256, synchronous gear 257, driving mechanism 258, rotating rod 2581, synchronous chain 2582, connecting sprocket 2583, fixed seat 2584, hanging bracket 259, plug-in plate 26, clamping block 261, compression spring 262, base 3. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] like Figures 1 to 8 As shown, a large heavy workpiece conveying system for an intelligent production line of a heat treatment furnace includes a bearing component 1, a conveying component 2 symmetrically arranged below the bearing component 1, and a base 3 below the conveying component 2; the bearing component 1 includes a bearing block 11 and an adjusting block 12; the bearing block 11 and the adjusting block 12 are symmetrically arranged; a T-shaped sliding portion is provided at the lower end of the bearing block 11, and the T-shaped sliding portion is slidably connected in the T-shaped sliding groove on the adjusting block 12; the lower end of the adjusting block 12 is conveyed and moved on the conveying component 2.

[0035] By setting the supporting block 11 and the adjusting block 12 in the supporting component 1 to be able to slide relative to each other, when the heat-treated parts are deformed due to high temperature during the heat treatment process, the heat-treated parts can push the supporting block 11 to slide relative to the adjusting block 12 in the horizontal direction, and then use the T-shaped sliding part set at the lower end of the supporting block 11 to slide in the T-shaped sliding groove on the adjusting block 12 to compensate for the displacement, thereby ensuring that the lower end of the adjusting block 12 will not be displaced with the conveying component 2, so that the lower end of the adjusting block 12 can be transported and moved smoothly on the conveying component 2, thereby improving the fluency and stability of the conveying system.

[0036] like Figures 1 to 5 As shown, the bearing component 1 further includes a sliding rod 13 ; a guide hole is provided on the upper end of the bearing block 11 ; and both ends of the sliding rod 13 are slidably connected to the guide holes on the two bearing blocks 11 .

[0037] By setting a sliding rod 13 between the two supporting blocks 11, the vertical position of the two supporting blocks 11 is limited by the sliding rod 13. Because the sliding rod 13 and the supporting blocks 11 are in sliding connection, when the heat-treated parts are deformed due to high temperature during the heat treatment process, the heat-treated parts can push the supporting blocks 11 to slide along the sliding rod 13; the setting of the sliding rod 13 not only does not affect the sliding of the supporting blocks 11, but also can limit the relative position between the two supporting blocks 11, and thus limit the vertical parallelism of the two supporting blocks 11 before the heat-treated parts are placed, thereby ensuring that the heat-treated parts can be smoothly pushed to slide along the adjustment block 12 after being heated and deformed, and no jamming will occur, thereby improving the smoothness of transportation.

[0038] like Figures 1 to 5 As shown, the conveying component 2 includes a support block 21, a mounting groove 22, a roller 23, a bearing 24 and a driving unit; the support block 21 is symmetrically arranged on the base 3; a stepped groove 211 is arranged on the upper end surface of the support block 21, and the lower end of the mounting groove 22 is inserted into the stepped groove 211; aluminum silicate fiber and microporous ceramic composite insulation material are arranged in the stepped groove 211; the rollers 23 are evenly spaced at the upper end of the mounting groove 22 along the length direction of the mounting groove 22; the rollers 23 are installed on the mounting groove 22 through the bearings 24; the driving unit is used to drive the rollers 23 to rotate.

[0039] By setting the mounting groove 22 and the support block 21 separately, and setting aluminum silicate fiber and microporous ceramic composite insulation material between the two, the heat absorbed by the load-bearing component 1 during the heat treatment is isolated, thereby preventing the heat from being transferred downward to cause deformation of the conveying component 2 and the base 3, thereby causing friction or even jamming of the transmission component, thereby improving the smoothness and stability of the conveying system, and indirectly improving the service life of the conveying system.

[0040] like Figures 4 and 5 As shown, an annular V-shaped groove is provided on the cylindrical surface of the roller 23; an arc-shaped guide portion is provided at the lower end of the adjustment block 12; and the guide portion and the V-shaped groove are in three-point contact.

[0041] By setting three-point contact between the lower end of the adjustment block 12 and the roller 23, on the one hand, the point contact can greatly reduce the heat transferred from the load-bearing component 1 to the conveying component 2, thereby preventing the heat from being transferred downward and causing deformation of the conveying component 2 and the base 3, thereby causing friction or even jamming of the transmission component, thereby improving the smoothness and stability of the conveying system; on the other hand, the three-point contact can also maximize the supporting force, thereby meeting the conveying requirements of large and heavy workpieces.

[0042] like Figures 1 to 3As shown, the conveying component 2 also includes a synchronous transmission unit 25; the synchronous transmission unit 25 includes a driving chain 251, a synchronous sprocket 252, an upper tensioning frame 253, an upper tensioning wheel 254, a lower tensioning frame 255, a lower tensioning wheel 256, a synchronous gear 257 and a driving mechanism 258; one end of the wheel shaft of the roller 23 is connected to the synchronous sprocket 252; the driving chain 251 is overlapped on all the rollers 23; an upper tensioning frame 253 is arranged above the roller 23; the upper tensioning wheels 254 are evenly spaced on the upper tensioning frame 253; the upper tensioning wheel 254 is rotatably connected to the lower end of the upper tensioning frame 253 through a first mounting plate; a lower tensioning frame 255 is arranged below the roller 23; The lower tensioning wheels 256 are evenly spaced on the lower tensioning frame 255; the lower tensioning wheels 256 are rotatably connected to the upper end of the upper tensioning frame 253 through a second mounting plate; vertical racks are provided at both ends of the upper tensioning frame 253 and the lower tensioning frame 255, and the racks on the upper tensioning frame 253 and the racks on the lower tensioning frame 255 achieve synchronous movement toward each other by simultaneously engaging with the synchronous gear 257; the synchronous gear 257 is rotatably connected to the mounting groove 22 through a mounting seat; the upper tensioning frame 253 and the lower tensioning frame 255 are both mounted on the support block 21 through sliding guide rails; the driving mechanism 258 is used to drive the lower tensioning frame 255 to move vertically.

[0043] Because the rollers 23 and bearings 24 are exposed to high temperatures and high pressures for a long time, they are more likely to be damaged, resulting in long maintenance times and affecting the efficiency of the heat treatment furnace. The method of driving all synchronous sprockets 252 through the entire drive chain 251 can quickly release the drive chain 251 from the synchronous sprockets 252 when the rollers 23 and bearings 24 are damaged, thereby facilitating rapid replacement and maintenance, greatly improving maintenance efficiency and ensuring the overall efficiency of the heat treatment furnace. In this case, the upper and lower tensioning pulleys 254 and 256 are symmetrically arranged, which not only allows the drive chain 251 to be quickly tensioned and released, but also allows the drive chain 251 to wrap around each synchronous sprocket 252 in a longer arc, thereby increasing the meshing of the gears between the drive chain 251 and the synchronous sprocket 252, thereby ensuring sufficient driving force between the drive chain 251 and the synchronous sprocket 252, and thus improving the stability of the conveying system. During operation, the driving mechanism 258 drives the lower tensioning frame 255 to move up and down, and because the rack on the upper tensioning frame 253 and the rack on the lower tensioning frame 255 are simultaneously engaged with the synchronous gear 257, the upper tensioning frame 253 and the lower tensioning frame 255 are synchronized and move toward each other, thereby driving the upper tensioning wheel 254 and the lower tensioning wheel 256 to tighten and loosen the drive chain 251.

[0044] like Figure 3 and Figure 9 As shown, a hanging bracket 259 is provided below the upper tensioning wheel 254 ; the upper end of the hanging bracket 259 is connected to the upper tensioning frame 253 ; and the lower end of the hanging bracket 259 is provided with an L-shaped or U-shaped supporting portion.

[0045] By arranging a hanging bracket 259 below the upper tensioning wheel 254, when the upper tensioning frame 253 brings the upper tensioning wheel 254 to release the tension on the drive chain 251, the drive chain 251 can be lifted by the supporting part extending below the drive chain 251, so that the upper tensioning wheel 254 can also hang the drive chain 251 away from the synchronous sprocket 252 after releasing the tension on the drive chain 251, and there is no need to remove the drive chain 251 to disassemble the synchronous sprocket 252. In addition, since the drive chain 251 is a double-row chain in actual use, it is also difficult to remove it manually, which greatly facilitates the replacement of the roller 23 and the bearing 24, and improves the convenience of maintenance.

[0046] A convex structure is provided on the upper surface of the supporting portion.

[0047] By providing a raised structure on the upper surface of the supporting portion, which can be columnar or tooth-shaped, the raised structure on the supporting portion is inserted between the links of the drive chain 251 when the hanging bracket 259 lifts the drive chain 251, thereby preventing the drive chain 251 from moving after being lifted, which would cause the meshing position to be misaligned when the drive chain 251 re-engages with the synchronous sprocket 252, thereby affecting the meshing. The positioning of the raised structure on the supporting portion can effectively solve this technical problem, thereby ensuring the accuracy of re-engagement and the stability of the tensioning and loosening process. It should be noted that when the upper tensioning wheel 254 is tensioning the drive chain 251, the raised structure on the supporting portion is not inserted between the links of the drive chain 251. Only when lifting is required, the raised structure on the supporting portion is inserted between the links of the drive chain 251.

[0048] like Figures 1 to 3 As shown, the driving mechanism 258 includes a rotating rod 2581, a synchronous chain 2582, a connecting sprocket 2583 and a fixed seat 2584; the lower tensioning frame 255 is connected to a plurality of the rotating rods 2581 through a threaded pair; the rotating rod 2581 is rotatably connected to the support block 21 through the fixed seat 2584; the two adjacent rotating rods 2581 are connected and transmitted through the connecting sprocket 2583 and the synchronous chain 2582; the end of the rotating rod 2581 is provided with a driving structure for plug-in.

[0049] By setting up several rotating rods 2581 to synchronously drive the lower tensioning frame 255 to move, it can be ensured that the longer lower tensioning frame 255 can be moved stably. When in use, it is only necessary to insert a wrench into the end of the rotating rod 2581, and then by twisting one of the rotating rods 2581, all the rotating rods 2581 can be rotated synchronously under the action of the synchronous chain 2582 and the connecting sprocket 2583, and then the lower tensioning frame 255 is driven to move up and down stably through the threaded pair.

[0050] like Figure 2 and Figure 6 As shown, the bearing 24 is connected to the side wall of the installation slot 22 via a plug-in plate 26 ; a plug-in slot is vertically provided on the plug-in plate 26 ; and a vertical slot is provided on the side wall of the installation slot 22 .

[0051] The bearing 24 is connected to the side wall of the mounting groove 22 via the plug-in plate 26 , thereby enabling quick installation and removal of the bearing 24 , thereby greatly improving the replacement efficiency of the roller 23 and the bearing 24 .

[0052] like Figure 2 and Figure 6 As shown, clamping blocks 261 are symmetrically arranged on both sides of the bottom of the plug-in slot of the plug-in board 26; the clamping block 261 is a C-shaped structure, and the middle part of the clamping block 261 is rotatably connected to the side wall of the mounting slot 22; the lower end of the clamping block 261 abuts against the upper end of the compression spring 262; the lower end of the compression spring 262 is connected to the plug-in board 26.

[0053] By symmetrically placing clamping blocks 261 on both sides of the bottom of the insertion slot of the insertion plate 26, after the bearing 24 is placed in the insertion slot of the insertion plate 26, the lower end of the bearing 24 presses against the lower end of the clamping blocks 261, and the clamping blocks 261 rotate about the central hinge point, thereby causing the upper ends of the clamping blocks 261 to clamp the side walls of the bearing 24, thereby achieving automatic clamping of the bearing 24, thereby preventing the conveying system from being unstable due to the bouncing of the bearing 24 during conveying, thereby improving the operational stability of the conveying system. In addition, the clamping blocks 261 can be automatically unlocked by the action of the compression spring 262, thereby ensuring the rapid removal of the bearing 24.

[0054] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A large heavy workpiece conveying system for an intelligent production line of a heat treatment furnace, comprising a bearing component (1), a conveying component (2) symmetrically arranged below the bearing component (1), and a base (3) below the conveying component (2); characterized in that: The bearing component (1) comprises a bearing block (11) and an adjusting block (12); the bearing block (11) and the adjusting block (12) are both symmetrically arranged; a T-shaped sliding portion is arranged at the lower end of the bearing block (11), and the T-shaped sliding portion is slidably connected in a T-shaped sliding groove on the adjusting block (12); the lower end of the adjusting block (12) is transported and moved on the conveying component (2).

2. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 1 is characterized in that: The bearing component (1) further comprises a sliding rod (13); a guide hole is provided on the upper end of the bearing block (11); and both ends of the sliding rod (13) are respectively slidably connected to the guide holes on the two bearing blocks (11).

3. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 1 is characterized in that: The conveying component (2) comprises a support block (21), a mounting groove (22), a roller (23), a bearing (24) and a driving unit; the support block (21) is symmetrically arranged on the base (3); a stepped groove (211) is arranged on the upper end surface of the support block (21), and the lower end of the mounting groove (22) is inserted into the stepped groove (211); an aluminum silicate fiber and microporous ceramic composite insulation material is arranged in the stepped groove (211); the rollers (23) are evenly spaced at the upper end of the mounting groove (22) along the length direction of the mounting groove (22); the rollers (23) are mounted on the mounting groove (22) through the bearing (24); and the driving unit is used to drive the rollers (23) to rotate.

4. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 3 is characterized in that: An annular V-shaped groove is provided on the cylindrical surface of the roller (23); an arc-shaped guide portion is provided at the lower end of the adjustment block (12); and the guide portion and the V-shaped groove are in three-point contact.

5. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 3 is characterized in that: The conveying component (2) further comprises a synchronous transmission unit (25); the synchronous transmission unit (25) comprises a driving chain (251), a synchronous sprocket (252), an upper tensioning frame (253), an upper tensioning wheel (254), a lower tensioning frame (255), a lower tensioning wheel (256), a synchronous gear (257) and a driving mechanism (258); one end of the wheel shaft of the roller (23) is connected to the synchronous sprocket (252); the driving chain (251) is overlapped on all rollers (23); an upper tensioning frame (253) is arranged above the roller (23); the upper tensioning wheels (254) are evenly spaced on the upper tensioning frame (253); the upper tensioning wheels (254) are rotatably connected to the lower end of the upper tensioning frame (253) through a first mounting plate; a lower tensioning frame (257) is arranged below the roller (23) 255); the lower tensioning wheels (256) are evenly spaced on the lower tensioning frame (255); the lower tensioning wheels (256) are rotatably connected to the upper end of the upper tensioning frame (253) through a second mounting plate; vertical racks are provided at both ends of the upper tensioning frame (253) and the lower tensioning frame (255), and the racks on the upper tensioning frame (253) and the racks on the lower tensioning frame (255) are simultaneously engaged with the synchronous gear (257) to achieve synchronous movement toward each other; the synchronous gear (257) is rotatably connected to the mounting groove (22) through a mounting seat; the upper tensioning frame (253) and the lower tensioning frame (255) are both mounted on the support block (21) through a sliding guide rail; the driving mechanism (258) is used to drive the lower tensioning frame (255) to move vertically.

6. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 5, characterized in that: A hanging bracket (259) is provided below the upper tensioning wheel (254); the upper end of the hanging bracket (259) is connected to the upper tensioning frame (253); and the lower end of the hanging bracket (259) is provided with an L-shaped or U-shaped supporting portion.

7. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 6, characterized in that: A convex structure is provided on the upper surface of the supporting portion.

8. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 5, characterized in that: The driving mechanism (258) comprises a rotating rod (2581), a synchronous chain (2582), a connecting sprocket (2583) and a fixed seat (2584); the lower tensioning frame (255) is connected to a plurality of the rotating rods (2581) via a threaded pair; the rotating rods (2581) are rotatably connected to the support block (21) via the fixed seat (2584); two adjacent rotating rods (2581) are connected and transmitted via the connecting sprocket (2583) and the synchronous chain (2582); and a driving structure for plugging is provided at the end of the rotating rod (2581).

9. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 3, characterized in that: The bearing (24) is connected to the side wall of the installation slot (22) via a plug-in plate (26); a plug-in slot is vertically arranged on the plug-in plate (26); and a vertical slot is arranged on the side wall of the installation slot (22).

10. The large heavy workpiece conveying system for a heat treatment furnace intelligent production line according to claim 9, characterized in that: Clamping blocks (261) are symmetrically arranged on both sides of the bottom of the plug-in slot of the plug-in board (26); the clamping blocks (261) are C-shaped structures, and the middle part of the clamping blocks (261) is rotatably connected to the side wall of the installation slot (22); the lower end of the clamping block (261) contacts the upper end of the compression spring (262); the lower end of the compression spring (262) is connected to the plug-in board (26).

Images