Hub heat treatment waste heat utilization device

Abstract

The invention discloses a hub heat treatment waste heat utilization device which comprises a solid melting furnace, an aging furnace and a transfer mechanism, the solid melting furnace and the aging furnace are connected with a solid melting chimney and an aging chimney correspondingly, a waste gas pipe is connected between the solid melting chimney and the aging chimney, the waste gas pipe is connected with a communicating pipe, and the other end of the communicating pipe is connected with the aging furnace; a control valve is installed on the communicating pipe, material frames and moving assemblies are arranged in the solid melting furnace and the aging furnace, circulating fans are installed on the upper portion of the solid melting furnace and the upper portion of the aging furnace, and a water quenching groove and a water quenching mechanism are arranged at an outlet of the solid melting furnace. According to the invention, waste heat in heat treatment can be effectively utilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheel hub production, in particular to a wheel hub heat treatment waste heat utilization device. BACKGROUND

[0002] The waste heat recycling scheme of solid solution chimney flue gas to aging is used in actual application. Due to the relatively far distance between the two heating furnaces, the remote aging furnace cannot extract the chimney flue gas from the solid solution furnace according to the circulating fan. Finally, only the exhaust fan (2.2KW 4-pole) is added on the solid solution chimney flue gas pipeline to obtain the total heat value required by the aging process. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provide a wheel hub heat treatment waste heat utilization device.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] The present application discloses a wheel hub heat treatment waste heat utilization device, which comprises a solid solution furnace, an aging furnace and a transfer mechanism. The solid solution furnace and the aging furnace are respectively connected with a solid solution chimney and an aging chimney. An exhaust gas pipe is connected between the solid solution chimney and the aging chimney. A communication pipe is connected to the exhaust gas pipe. The other end of the communication pipe is connected to the aging furnace. A control valve is installed on the communication pipe. A material rack and a moving assembly are arranged inside the solid solution furnace and the aging furnace. A circulating fan is installed on the upper part of the solid solution furnace and the aging furnace. A water quenching tank and a water quenching mechanism are arranged at the outlet of the solid solution furnace.

[0006] Further, the aging furnace comprises five aging zones, which are sequentially divided into a first aging zone, a second aging zone, a third aging zone, a fourth aging zone and a fifth aging zone along the moving direction of the wheel hub. The third aging zone and the fourth aging zone are connected with the communication pipe.

[0007] Further, the solid solution furnace comprises a furnace body. Openings are arranged at both ends of the furnace body. End plates are arranged at both ends of the furnace body. Cover plates are installed on the end plates through hoisting mechanisms.

[0008] Further, the material rack comprises two mounting racks installed in the furnace body. A plurality of cross beams are connected between the two mounting racks. The cross beams are arranged on the left and right sides of the mounting racks. The heights of the cross beams on the left and right sides are correspondingly arranged. A plurality of support rods are installed on the cross beams at the same height.

[0009] Further, the moving assembly comprises a connecting frame, a plurality of vertical rods are connected to the upper portion of the connecting frame, a movable hole is formed in the lower portion of the furnace body, the vertical rods are arranged through the movable hole, a support plate is connected to the upper portion of the vertical rods, a plurality of support seats are connected to the upper portion of the support plate, a moving rod is connected to the upper portion of the support seat, and the moving rod is located between two adjacent support rods; a mounting frame is arranged below the furnace body, a track is arranged above the mounting frame, a connecting block is connected between the track and the mounting frame, the two ends of the connecting block are rotatably connected with the track and the mounting frame, the upper portion of the support frame is provided with a track, a plurality of support wheels are arranged in the connecting frame and located on the track, a fixing block is connected to the upper portion of the mounting frame, a linear actuator one is arranged between the fixing block and the support frame, the two ends of the linear actuator one are hingedly connected with the fixing block and the support frame, a support block is connected to the upper portion of the support frame, and a linear actuator two is arranged between the support block and the connecting frame.

[0010] Further, the circulating fan is located at the middle position of the front and rear directions of the solid melting furnace and the aging furnace, the circulating fan comprises a base mounted on the solid melting furnace and the aging furnace, a driving motor and a rotating shaft are mounted on the base, the driving motor is drivingly connected with the rotating shaft, a impeller is connected to the lower end of the rotating shaft, and a guide cover is mounted in the solid melting furnace and the aging furnace corresponding to the position of the impeller.

[0011] Further, the application further comprises a gas supply main pipe, a burner is mounted on the solid melting furnace and the aging furnace, a gas supply branch pipe is connected between the burner and the gas supply main pipe, a guide pipe is mounted in the solid melting furnace and the aging furnace, the guide pipe is connected with the burner, the guide pipe is vertically arranged and located close to the front and rear sides.

[0012] Further, the transfer mechanism comprises a moving vehicle, a support frame is connected to the upper portion of the moving vehicle, the support frame is vertically arranged, a lifting motor is mounted on the upper portion of the support frame, a winding wheel is drivingly connected with the lifting motor, a lifting seat is slidingly arranged on the upper portion of the support frame, a connecting rope is arranged on the winding wheel, one end of the connecting rope is connected with the upper end surface of the lifting seat, the other end of the connecting rope is connected with a counterweight, a support arm is connected to the side surface of the lifting seat, one end of the support arm away from the lifting seat is connected with a mounting plate, and a plurality of support strips one are mounted on the side of the mounting plate away from the support arm.

[0013] Further, one limiting wheel is mounted on the upper portion and the lower portion of the lifting seat respectively, the limiting wheels are arranged against the side surface of the support frame, and the two limiting wheels are located on the two sides of the support frame.

[0014] The application has the advantages that the waste heat of the exhaust gas in the solid melting furnace is utilized to heat part of the area in the aging furnace, so that the area does not need to be provided with a burner and can meet the temperature control requirement of the aging process, and the waste heat is reused. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the waste heat utilization device for the hub heat treatment in the embodiment;

[0016] Figure 2 A plan view of a waste heat utilization device for the wheel hub heat treatment in the embodiment;

[0017] Figure 3 A structural schematic view of a solid melting furnace in the embodiment;

[0018] Figure 4 A sectional view of the solid melting furnace in the embodiment;

[0019] Figure 5 A Figure 4 An enlarged schematic view of A in the embodiment;

[0020] Figure 6 A structural schematic view of a transfer mechanism in the embodiment;

[0021] Figure 7 A structural schematic view of a water quenching mechanism in the embodiment.

[0022] The drawings show that: 1, solid melting furnace; 2, aging furnace; 3, transfer mechanism; 4, water quenching tank; 5, water quenching mechanism; 6, discharging assembly; 7, solid melting chimney; 8, aging chimney; 9, exhaust pipe; 10, communication pipe; 11, gas supply main pipe; 12, conveying roller; 13, inspection table; 14, furnace body; 15, circulating fan; 16, end plate; 17, hoisting mechanism; 18, sealing plate; 19, mounting frame; 20, opening; 21, cross beam; 22, support rod; 23, mounting frame; 24, support frame; 25, connecting block; 26, track; 27, connecting frame; 28, support wheel; 29, vertical rod; 30, movable hole; 31, support plate; 32, support seat; 33, moving rod; 34, connecting rod; 35, fixed block; 36, linear actuator I; 37, support block; 38, linear actuator II; 39, machine base; 40, driving motor; 41, rotating shaft; 42, impeller; 43, gas supply branch pipe; 44, burner; 45, guide pipe; 46, guide cover; 47, moving trolley; 48, support; 49, lifting motor; 50, winding wheel; 51, lifting seat; 52, connecting rope; 53, limit wheel; 54, counterweight; 55, support arm; 56, mounting plate; 57, support bar I; 58, reinforcing arm; 59, machine frame; 60, moving frame; 61, lifting arm; 62, support bar II. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the application will be clearly and completely described in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0024] like Figures 1-7 As shown, a waste heat utilization device for wheel hub heat treatment includes a solid solution furnace 1, an aging furnace 2, and a transfer mechanism 3. The solid solution furnace 1 and the aging furnace 2 are respectively connected to a solid solution chimney 7 and an aging chimney 8. An exhaust pipe 9 is connected between the solid solution chimney 7 and the aging chimney 8. One end of the exhaust pipe 9 is connected to the upper end of the solid solution chimney 7, and the other end of the solid solution chimney 7 is connected to the side of the aging chimney 8. A connecting pipe 10 is connected to the exhaust pipe 9, and the other end of the connecting pipe 10 is connected to the aging furnace 2. A control valve is installed on the connecting pipe 10. The air intake is controlled by adjusting the opening of the control valve to complete the temperature control of the area. The solid solution furnace 1 and the aging furnace 2 are both provided with a material rack and a moving component. The moving component can drive the wheel hub on the material rack to move. A circulating fan 15 is installed on the top of the solid solution furnace 1 and the aging furnace 2. A water quenching tank 4 and a water quenching mechanism 5 are provided at the outlet of the solid solution furnace 1.

[0025] Furthermore, aging furnace 2 comprises five aging zones: the first, second, third, fourth, and fifth aging zones, respectively, along the direction of wheel hub movement. The third and fourth aging zones are connected to a connecting pipe 10 at their upper portions. Due to the temperature requirements of the solution quenching process, the product blank temperature after quenching has already dropped from 540°C (the solution quenching temperature) to 70°C after the solution quenching process. However, the aging process temperature is 180°C. Upon entering the racks within aging furnace 2, the blanks must absorb a significant amount of heat to rapidly reach the required aging temperature. Consequently, the first and even the second aging zones cannot directly utilize the limited waste heat from solution furnace 1. Burner heating is retained to ensure sufficient heating capacity. The initial design of this device utilized waste heat in the second aging zone. Multiple tests using an online temperature tracker revealed that the aging temperature rise curve was excessively long, posing a risk of compromising the aging process. During equipment commissioning, the second aging zone was directly modified to utilize burner heating. In the third and fourth aging zones, the product blanks have already absorbed enough heat and entered the insulation stage early, so the heating power requirements are reduced. Therefore, the third and fourth aging zones are ultimately decided to be waste heat utilization heating zones. In addition, because the fifth aging zone is already in the discharge area of ​​the aging furnace 2, when the furnace door of the aging furnace 2 is open, a large amount of heat will flow out of the furnace body along with the airflow of the circulating fan 15, causing temperature loss. A larger power heating capacity is required. Therefore, the fifth aging zone also needs to be heated by a burner.

[0026] Furthermore, the solid solution furnace 1 includes a furnace body 14, each end of which is provided with an opening 20. Both ends of the furnace body 14 are provided with end plates 16. Closing plates 18 are mounted on the end plates 16 via a hoisting mechanism 17. The hoisting mechanism 17 can drive the closing plates 18 to rise and fall, thereby exposing or closing the openings 20. The structure of the aging furnace 2 is the same as that of the solid solution furnace 1.

[0027] Further, the rack comprises two mounting frames 19 mounted in the furnace body 14, a plurality of cross beams 21 are connected between the two mounting frames 19, the cross beams 21 are respectively arranged on the left and right sides of the mounting frames 19, the heights of the cross beams 21 on the left and right sides are correspondingly arranged, a plurality of support rods 22 are mounted on two cross beams 21 at the same height, in the embodiment, four cross beams 21 are arranged, so that the support rods 22 have two layers, the spacing between adjacent two support rods 22 is the same, the support rods 22 have a gap, so that air can pass through and circulate in the furnace body 14, thereby better heating the hub, and the support rods 22 are laid along the length direction of the furnace body 14.

[0028] Further, the moving assembly comprises a connecting frame 27, a plurality of vertical rods 29 are connected to the upper part of the connecting frame 27, a movable hole 30 is formed in the lower part of the furnace body 14, the length direction of the movable hole 30 is arranged along the length direction of the furnace body 14, the vertical rods 29 are arranged through the movable hole 30, a support plate 31 is connected to the upper part of the vertical rod 29, a plurality of support seats 32 are connected to the upper part of the support plate 31, a moving rod 33 is connected to the upper part of the support seat 32, the moving rod 33 is located between adjacent two support rods 22, the number of the moving rod 33 corresponds to the number of layers of the support rods 22, and a connecting rod 34 is connected between adjacent two support plates 31. In the embodiment, the number of the support plates 31 is two, and the support plates 31 are respectively located below the two support rods 22.

[0029] A mounting frame 23 is arranged below the furnace body 14, a track 26 is arranged above the mounting frame 23, a connecting block 25 is connected between the track 26 and the mounting frame 23, both ends of the connecting block 25 are rotatably connected with the track 26 and the mounting frame 23, the track 26 is arranged on the upper part of the support frame 24, a plurality of support wheels 28 are arranged in the connecting frame 27, the support wheels 28 are located on the track 26, a fixed block 35 is connected to the upper part of the mounting frame 23, a linear actuator one 36 is arranged between the fixed block 35 and the support frame 24, both ends of the linear actuator one 36 are hingedly connected with the fixed block 35 and the support frame 24, a support block 37 is connected to the upper part of the support frame 24, and a linear actuator two 38 is arranged between the support block 37 and the connecting frame 27.

[0030] In normal state, the hub blank is placed on the support rod 22, and is placed in two layers. By pulling the support frame 24 through the linear drive 36, the support frame 24 is right- shifted and upwardly offset under the action of the connecting block 25. The support frame 24 drives the support wheel 28 on the track 26 to rise, thereby driving the support plate 31 to rise through the vertical rod 29. The moving rod 33 on the support plate 31 rises to pass through the support rod 22, and lifts the hub blank on the support rod 22. The linear drive 38 pulls the connecting frame 27, thereby driving the support plate 31 to move, and moving the hub blank on the moving rod 33, so that the hub blank moves a distance at the outlet of the furnace body 14. After completing a movement, the support frame 24 is reset, so that the hub blank falls on the support rod 22 again. By repeating the process, the hub blank at the inlet of the furnace body 14 can be moved to the outlet.

[0031] Further, the circulating fan 15 is located at the middle position of the front and rear directions of the solidification furnace 1 and the aging furnace 2, and the circulating fan 15 comprises a base 39 installed on the solidification furnace 1 and the aging furnace 2, a driving motor 40 and a rotating shaft 41 installed on the base 39, the driving motor 40 drivingly connected with the rotating shaft 41, an impeller 42 connected with the lower end of the rotating shaft 41, and a guide cover 46 installed in the solidification furnace 1 and the aging furnace 2 corresponding to the position of the impeller 42. The device further comprises the gas supply main pipe 11, the burners 44 installed on the solidification furnace 1 and the aging furnace 2, the third aging zone and the fourth aging zone heated by waste heat, and no burners 44 installed. The burners 44 and the gas supply branch pipe 43 are connected, and the guide pipes 45 are installed in the solidification furnace 1 and the aging furnace 2 and connected with the burners 44. The guide pipes 45 are vertically arranged and located close to the front and rear sides. The hot air generated by the burners 44 enters from the front and rear sides of the furnace body 14 and flows downward, and under the action of the circulating fan 15, the hot air is sucked upward from the middle position of the furnace body 14, thereby circulating in the furnace body, and better and more uniformly heating the hub blanks on the racks.

[0032] Further, the transfer mechanism 3 comprises a moving trolley 47, a support frame 48 connected with the upper portion of the moving trolley 47, the support frame 48 vertically arranged, a lifting motor 49 installed on the upper portion of the support frame 48, a winding wheel 50 drivingly connected with the lifting motor 49, a lifting seat 51 slidingly arranged on the support frame 48, a connecting rope 52 arranged on the winding wheel 50, one end of the connecting rope 52 connected with the upper end surface of the lifting seat 51, the other end of the connecting rope 52 connected with a counterweight 54, a support arm 55 connected with the side surface of the lifting seat 51, an installation plate 56 connected with the end of the support arm 55 away from the lifting seat 51, a plurality of support bars 57 installed on the side of the installation plate 56 away from the support arm 55, and the support bars 57 arranged in two layers.

[0033] Further, the lifting seat 51 is provided with a limiting wheel 53 at the upper and lower parts, respectively, and the limiting wheels 53 are arranged against the side of the support 48, and the two limiting wheels 53 are arranged at the two sides of the support 48. The lifting seat 51 is supported by the two limiting wheels 53, thereby effectively limiting the lifting of the lifting seat 51.

[0034] Further, the device further comprises a plurality of discharging assemblies 6, which are respectively arranged at the inlet of the solid melting furnace 1, the side of the water quenching tank 4, the inlet of the aging furnace 2 and the outlet of the aging furnace 2. The discharging assembly 6 comprises a plurality of conveying rollers arranged side by side, and the support bars I 57 on the transfer mechanism 3 are arranged alternately with the conveying rollers, and the support bars I 57 can pass through between two adjacent conveying rollers. The support arm 55 and the mounting plate 56 are connected with a reinforcing arm 58 for reinforcing the connection firmness.

[0035] Further, the discharging assembly 6 comprises a rack 59, a moving frame 60 is arranged on the rack 59 through a moving mechanism, a lifting arm 61 is arranged on the moving frame 60 through a lifting mechanism, and a plurality of support bars II 62 are arranged on the lifting arm 61.

[0036] The device further comprises a conveying roller way 12 arranged between the solid melting furnace 1 and the aging furnace 2, and a plurality of inspection tables 13 are arranged at the side of the conveying roller way 12.

[0037] Heat treatment process unit profile:

[0038] Discharging of the solid melting furnace 1: Since the hub blanks to be heat treated have different sizes, in order to fully improve the production capacity of the heat treatment furnace, the number of hub blanks entering is controlled. The number of the solid melting furnace 1 is limited to 3 hub blanks at a time for greater than 20 inches, and 4 hub blanks at a time for less than 20 inches. The operator inputs the feeding parameters in advance, so that the product blanks are sorted in order before entering the solid melting furnace 1, ensuring that the hub blanks on the rack are evenly distributed, reducing the single-sided pressure on the internal beam of the solid melting furnace 1 and the balance of the temperature guide of the circulating fan 15.

[0039] Feeding of the solid melting furnace 1: The transfer mechanism 3 can put the evenly arranged product blanks on the discharging assembly 6 at the inlet of the solid melting furnace 1 into the upper and lower layers of the rack of the solid melting furnace 1 according to the order; the support bars I 57 on the transfer mechanism 3 can pass through the conveying rollers on the discharging assembly 6, thereby lifting the hub blanks to complete the feeding when the support bars I 57 are lifted; the support bars I 57 are divided into two layers, and two groups of hub blanks are lifted from the discharging assembly 6 in turn.

[0040] According to the solid melting time and production rhythm required by the solid melting process, the length of the rack in the solid melting furnace 1 and the process temperature required for solid melting are calculated. In this embodiment, the solid melting process temperature is 500-600℃, preferably 540℃, and the solid melting process time is 2-4 hours.

[0041] The output of the solid melting furnace 1: the water quenching mechanism 5 can take the wheel hub blanks according to the layer of the wheel hub blank in the rack. The wheel hub blanks in the upper and lower layers are taken in batches. The taken wheel hub blanks are put into the water quenching tank 4 for water quenching in less than 7 seconds. The water quenching tank 4 is provided with a circulating cooling mechanism outside to keep the water temperature in the water quenching tank 4 at 70±1℃. The water quenching tank 4 can accommodate 3-4 wheel hub blanks at a time, and the effective water total volume is 6.1 cubic meters.

[0042] The water quenching mechanism 5 places the water quenched wheel hub blanks on the discharge assembly 6 beside the water quenching tank 4. The subsequent material can be directly sent to the rack in the aging furnace 2 through the transfer mechanism 3. It can also be placed on the conveying roller 12 through the transfer mechanism 3, and then taken off by the staff and placed on the nearby inspection table 13 for inspection. The qualified wheel hub blanks are placed on the conveying roller 12 again, and then conveyed to the discharge assembly 6 at the entrance of the aging furnace 2. The order is rearranged, and the arrangement mode remains consistent with the feeding of the solid melting furnace 1. The wheel hub blanks on the discharge assembly 6 are placed in the rack in the aging furnace 2 by the transfer mechanism 3.

[0043] According to the time and production rhythm required by the aging process, the total length of the rack in the aging furnace 2 is calculated, and the process temperature required for aging is calculated. The aging process temperature is 150-200℃, and the preferred temperature is 180℃. The aging process time is 4-6 hours.

[0044] The transfer mechanism 3 at the outlet of the aging furnace 2 can take out the aged wheel hub blanks in order to the layer of the wheel hub blank in the aging furnace 2 to the aging roller line.

[0045] After aging, the temperature of the wheel hub blank is still 180℃, which cannot be directly placed on the transfer pallet. During the conveying process of the aging roller line, the temperature of the wheel hub blank needs to be lowered from 180℃ to below 60℃ by water spraying cooling.

[0046] The aging roller line can store 22 or less wheel hub blanks at a time to ensure that the wheel hub blanks to be transferred have a buffer time in the aging roller line.

[0047] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the scope of the present application should be considered within the protection scope of the present application. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application should also be considered within the protection scope of the present application.

Claims

1. A device for utilizing waste heat from wheel hub heat treatment, characterized in that: The invention comprises a solid melting furnace (1), an aging furnace (2), and a transfer mechanism (3). The solid melting furnace (1) and the aging furnace (2) are respectively connected to a solid melting chimney (7) and an aging chimney (8). An exhaust pipe (9) is connected between the solid melting chimney (7) and the aging chimney (8). A connecting pipe (10) is connected to the exhaust pipe (9). The other end of the connecting pipe (10) is connected to the aging furnace (2). A control valve is installed on the connecting pipe (10). A material rack and a moving component are provided inside the solid melting furnace (1) and the aging furnace (2). A circulating fan (15) is installed on the upper part of the solid melting furnace (1) and the aging furnace (2). A water quenching tank (4) and a water quenching mechanism (5) are provided at the outlet of the solid melting furnace (1).

2. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The aging furnace (2) comprises five aging zones, which are sequentially divided into a first aging zone, a second aging zone, a third aging zone, a fourth aging zone, and a fifth aging zone along the moving direction of the hub. The third aging zone and the fourth aging zone are connected to a connecting pipe (10) at their upper parts.

3. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The solid solution furnace (1) comprises a furnace body (14), both ends of the furnace body (14) are provided with openings (20), both ends of the furnace body (14) are provided with end plates (16), and the end plates (16) are installed with sealing plates (18) via a hoisting mechanism (17). The structure of the aging furnace (2) is the same as that of the solid solution furnace (1).

4. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The material rack includes two mounting frames (19) installed in the furnace body (14), and a plurality of crossbeams (21) are connected between the two mounting frames (19). The crossbeams (21) are respectively arranged on the left and right sides of the mounting frames (19). The heights of the crossbeams (21) on the left and right sides are set correspondingly, and a plurality of support rods (22) are installed on the two crossbeams (21) at the same height.

5. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The moving assembly comprises a connecting frame (27), the upper portion of the connecting frame (27) is connected to a plurality of vertical rods (29), the lower portion of the furnace body (14) is provided with a movable hole (30), the vertical rod (29) is arranged through the movable hole (30), the upper portion of the vertical rod (29) is connected to a support plate (31), the upper portion of the support plate (31) is connected to a plurality of support seats (32), the upper portion of the support seat (32) is connected to a moving rod (33), and the moving rod (33) is located between two adjacent support rods (22); an installation frame (23) is provided below the furnace body (14), a track (26) is provided above the installation frame (23), and a connecting block (25) is connected between the track (26) and the installation frame (23) The two ends of the connecting block (25) are rotatably connected to the track (26) and the mounting frame (23) respectively. The upper part of the support frame (24) is provided with a track (26). The connecting frame (27) is provided with a plurality of support wheels (28). The support wheels (28) are located on the track (26). The upper part of the mounting frame (23) is connected with a fixed block (35). A linear drive (36) is installed between the fixed block (35) and the support frame (24). The two ends of the linear drive (36) are hinged to the fixed block (35) and the support frame (24) respectively. The upper part of the support frame (24) is connected with a support block (37). A linear drive (38) is installed between the support block (37) and the connecting frame (27).

6. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The circulating fan (15) is located in the middle position of the upper front-to-back direction of the solid solution furnace (1) and the aging furnace (2). The circulating fan (15) includes a base (39) installed on the solid solution furnace (1) and the aging furnace (2). A driving motor (40) and a rotating shaft (41) are installed on the base (39). The driving motor (40) drives the rotating shaft (41). The lower end of the rotating shaft (41) is connected to an impeller (42). A guide cover (46) is installed at a position corresponding to the impeller (42) in the solid solution furnace (1) and the aging furnace (2).

7. The waste heat utilization device for wheel hub heat treatment according to claim 1, characterized in that: The invention also includes a gas supply main pipe (11), a burner (44) is installed on the solid solution furnace (1) and the aging furnace (2), a gas supply branch pipe (43) is connected between the burner (44) and the gas supply main pipe (11), and a guide pipe (45) is installed in the solid solution furnace (1) and the aging furnace (2), the guide pipe (45) is connected to the burner (44), and the guide pipe (45) is vertically arranged and located near the front and rear sides.

8. The device for utilizing waste heat from hub heat treatment according to claim 1, characterized in that: The transfer mechanism (3) includes a moving vehicle (47), the upper part of the moving vehicle (47) is connected to a support (48), the support (48) is vertically arranged, the upper part of the support (48) is installed with a lifting motor (49), the lifting motor (49) is driven by a winding wheel (50), a lifting seat (51) is slidably arranged on the support (48), a connecting rope (52) is provided on the winding wheel (50), one end of the connecting rope (52) is connected to the upper end surface of the lifting seat (51), the other end of the connecting rope (52) is connected to a counterweight (54), the side of the lifting seat (51) is connected to a support arm (55), the end of the support arm (55) away from the lifting seat (51) is connected to a mounting plate (56), and a side of the mounting plate (56) away from the support arm (55) is installed with a plurality of support bars (57).

9. The waste heat utilization device for wheel hub heat treatment according to claim 8, characterized in that: A limiting wheel (53) is respectively installed on the upper and lower parts of the lifting seat (51), and the limiting wheel (53) is arranged against the side of the support (48), and the two limiting wheels (53) are correspondingly located on both sides of the support (48).

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