Steel secondary heat treatment device

Abstract

The utility model relates to a steel secondary heat treatment device which comprises a frame body, a first heat treatment device and a second heat treatment device. A tempering furnace located above the conveying mechanism is arranged on the frame body, a heating section and a heat preservation section which are communicated with each other are arranged in the tempering furnace, and the heating section and the heat preservation section conduct heating and heat preservation on workpieces respectively. According to the heat treatment device, through cooperation of the conveying mechanism and the lifting mechanisms, automatic conveying and lifting feeding work of the workpieces is achieved, the automation degree of heat treatment work is greatly improved, manual operation is reduced, and the work efficiency is improved. And the working intensity of operators is reduced, the labor cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel tempering, and particularly relates to a steel secondary heat treatment device. BACKGROUND

[0002] In the current steel heat treatment process, a secondary continuous tempering furnace as a key heat treatment equipment is widely used to improve the mechanical properties and stability of steel.

[0003] Most of the existing secondary continuous tempering furnaces usually ignore the efficiency and convenience of the feeding and discharging links. In actual operation, due to the lack of automatic feeding and discharging equipment, manual loading and unloading of workpieces are usually relied on. For large workpieces with large volume, additional self-discharging equipment needs to be used for operation, which not only requires a large amount of manpower and equipment cost, but also is inconvenient to operate, resulting in low efficiency. In this process, workers need to spend a lot of time and effort to move, position and fix the workpieces to cooperate with the use of external self-discharging equipment such as a forklift, which not only increases the production cost, but also may cause damage to the workpieces or safety accidents due to improper operation.

[0004] In view of the above problems, the present application provides a steel secondary heat treatment device. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides a steel secondary heat treatment device to solve the problem that the existing continuous tempering furnace in the prior art cannot be automatically fed and discharged, manual operation is inconvenient for workpieces with large volume, the labor cost is high, and the efficiency is low.

[0006] In a first aspect, a steel secondary heat treatment device is provided, comprising:

[0007] a frame body, a conveying mechanism for conveying workpieces is arranged on the frame body;

[0008] a tempering furnace is arranged above the conveying mechanism on the frame body, the tempering furnace has a heating section and a holding section which are in communication with each other, and the heating section and the holding section heat and hold the workpieces, respectively;

[0009] the conveying mechanism is provided with a lifting mechanism at both ends, and the lifting mechanism is used for controlling the lifting of the workpieces;

[0010] the lifting mechanism comprises a driving member and a discharging platform, the discharging platform is used for receiving materials, and the driving member is connected with the discharging platform and is used for driving the discharging platform to lift and lower.

[0011] In some embodiments, the conveying mechanism has a feeding end and a discharging end which are respectively used for feeding and discharging;

[0012] The conveying mechanism comprises conveying rollers arranged on the frame body in opposite rotation, and stainless steel mesh belts are arranged on the outer sides of the two conveying rollers in transmission.

[0013] The conveying mechanism further comprises a driving motor arranged inside the frame body, and the output shaft of the driving motor and one end of one of the conveying rollers are both provided with pulleys, and the two pulleys are in transmission through a belt.

[0014] In some embodiments, the driving member comprises:

[0015] A housing arranged at one end of the frame body;

[0016] Two rails arranged in opposite directions inside the housing;

[0017] A sliding block in sliding fit with the rails;

[0018] A lead screw arranged in rotation inside the housing;

[0019] A driving motor two arranged inside the housing;

[0020] A transmission table in threaded connection with the lead screw;

[0021] The output shaft of the driving motor two and one end of the lead screw are both provided with pulley two, and the two pulleys are in transmission through a belt;

[0022] A plurality of sliding holes are formed in the housing, and one end of the transmission table and one end of the sliding block are both connected with the material placing platform.

[0023] In some embodiments, the material placing platform comprises a fixed disc and a material placing frame connected with each other, the other end of the fixed disc is connected with the sliding block and the transmission table respectively, and the material placing frame is a rectangular frame.

[0024] In some embodiments, two material placing platforms are arranged at the feeding end and the discharging end of the conveying mechanism respectively;

[0025] A pushing member is arranged on the material placing platform at the feeding end, and the pushing member is used for pushing the workpiece on the material placing platform to the conveying mechanism;

[0026] The pushing member comprises:

[0027] Two guide rods arranged inside the material placing frame;

[0028] A lead screw two arranged in rotation inside the material placing frame;

[0029] The outer side of the lead screw two is in threaded connection with a transmission plate, and the transmission plate is in sliding fit with the guide rods at both ends respectively;

[0030] A baffle is arranged on the material placing frame;

[0031] A pushing plate arranged above the baffle, a top end of the transmission plate being connected with the pushing plate;

[0032] A driving motor three arranged inside the material placing rack, a belt pulley three being arranged on an output shaft of the driving motor three and a screw rod two, and the two belt pulleys three being driven by a belt.

[0033] In some embodiments, a plurality of rollers are arranged on the material placing rack at one end of the discharging end and are arranged to rotate along the length of the material placing rack.

[0034] In some embodiments, a cooling part is further arranged on the rack body above the conveying mechanism, the cooling part being arranged at one end of the annealing furnace close to the discharging end and being used to cool the workpiece.

[0035] The cooling part comprises a plurality of mounting seats arranged on the rack body, two fans being oppositely arranged on the mounting seats, and ventilation nets being embedded on both sides of the mounting seats.

[0036] The embodiments of the present application provide a steel secondary heat treatment device, which realizes automatic conveying and lifting of the workpiece by cooperation of the conveying mechanism and the lifting mechanism, greatly improves the automation degree of the heat treatment operation, reduces manual operation, reduces the working strength of the operator, reduces the labor cost, and improves the production efficiency.

[0037] The arrangement of the heating section and the holding section ensures that the workpiece can be uniformly and sufficiently heated, thereby improving the quality of the heat treatment.

[0038] The workpiece can be lifted in the vertical direction by the lifting mechanism, thereby saving horizontal space and making the whole heat treatment device more compact and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0040] Figure 1 The three-dimensional structure schematic diagram provided by the embodiments of the present application is provided.

[0041] Figure 2 The front view cross-sectional view provided by the embodiments of the present application is provided.

[0042] Figure 3 The lifting piece three-dimensional schematic cross-sectional view provided by the embodiments of the present application is provided.

[0043] Figure 4 A front view of the pusher provided in the embodiment of the present application;

[0044] Figure 5 A top view of the pusher provided in the embodiment of the present application;

[0045] Figure 6 A three-dimensional schematic view of the connecting structure of the roller and the feeding rack provided in the embodiment of the present application;

[0046] Figure 7 A left view of the conveyor mechanism provided in the embodiment of the present application.

[0047] In the figure: 1, frame body; 2, conveying mechanism; 2a, feeding end; 2b, discharging end; 21, conveying roller; 22, stainless steel mesh belt; 23, driving motor; 24, pulley; 3, tempering furnace; 31, heating section; 32, heat preservation section; 4, lifting mechanism; 41, driving member; 411, housing; 412, track; 413, sliding block; 414, screw rod; 415, driving motor two; 416, transmission table; 42, feeding platform; 421, fixed disc; 422, feeding rack; 5, pusher; 51, guide rod; 52, screw rod two; 53, transmission plate; 54, baffle; 55, push plate; 6, roller; 7, cooling part; 71, mounting seat; 72, fan; 73, ventilation net. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0049] The steel secondary heat treatment device provided in the embodiments of the present application can solve the problems in the related art that the existing continuous tempering furnace cannot perform automatic feeding and discharging operations, manual operation for large-sized workpieces is inconvenient, the labor cost is high, and the efficiency is low.

[0050] Please refer to Figures 1-3The utility model provides a steel secondary heat treatment device, which comprises a frame body 1 provided with a conveying mechanism 2 for conveying workpieces; a tempering furnace 3 is arranged above the conveying mechanism 2 on the frame body 1, the tempering furnace 3 has a heating section 31 and a heat preservation section 32 that are in communication with each other inside the tempering furnace 3, and the heating section 31 and the heat preservation section 32 heat and preserve the workpieces, respectively; lifting mechanisms 4 are arranged at both ends of the conveying mechanism 2, and the lifting mechanisms 4 are used for controlling the workpieces to ascend and descend; the lifting mechanism 4 comprises a driving piece 41 and a material placing platform 42, the material placing platform 42 is used for receiving materials, and the driving piece 41 is connected with the material placing platform 42 and is used for driving the material placing platform 42 to ascend and descend.

[0051] Workpiece ascending: the lifting mechanism 4 at the starting end of the conveying mechanism 2 is started, the material placing platform 42 is driven to ascend by the driving piece 41, and the workpieces on the material placing platform 42 are sent onto the conveying mechanism 2.

[0052] Workpiece conveying: the workpieces are placed on the conveying mechanism 2 and are conveyed from one end of the device to the other end, passing through the tempering furnace 3 for heat treatment.

[0053] Heating and heat preservation: when the workpieces enter the tempering furnace 3, the workpieces first enter the heating section 31. The heating section 31 is used for heating the workpieces to a predetermined temperature. After heating is completed, the workpieces continue to move into the heat preservation section 32. The heat preservation section 32 is mainly used for maintaining the temperature of the workpieces obtained in the heating section, so as to ensure that the heat treatment effect is uniform and sufficient. The heat preservation time is determined according to the material quality, size and heat treatment requirement of the workpieces.

[0054] Workpiece ascending and descending: when the heat treatment of the workpieces is completed, the lifting mechanism 4 at the end of the conveying mechanism 2 is started, the material placing platform 42 is pushed to ascend, and the workpieces conveyed from the conveying mechanism 2 are received. Then, the material placing platform 42 slowly descends, and the workpieces are placed at a designated position, and the whole heat treatment process is completed.

[0055] Through the cooperation of the conveying mechanism 2 and the lifting mechanism 4, the automatic conveying and ascending and descending of the workpieces are realized, the automation degree of the heat treatment operation is greatly improved, manual operation is reduced, the working strength of the operators is reduced, the labor cost is reduced, and the production efficiency is improved.

[0056] Through the arrangement of the heating section 31 and the heat preservation section 32, it is ensured that the workpieces can be uniformly and sufficiently heated, so that the quality of the heat treatment is improved.

[0057] The design of the lifting mechanism 4 enables the workpieces to ascend and descend in the vertical direction, so that horizontal space is saved, and the whole heat treatment device is more compact and efficient.

[0058] In actual operation, the whole device structure is clear, easy to operate, easy to maintain and maintain. At the same time, through the existing intelligent control such as PLC programming control, the operation process can be further simplified and the operation difficulty can be reduced.

[0059] As shown in Figure 2 and Figure 7 , in one embodiment, the conveying mechanism 2 has an upper feeding end 2a and a lower feeding end 2b for feeding and discharging respectively; the conveying mechanism 2 includes conveying rollers 21 arranged in opposite rotation on the frame 1, and stainless steel mesh belts 22 are arranged on the outer sides of the two conveying rollers 21; the conveying mechanism 2 further includes a drive motor 23 arranged inside the frame 1, and the output shaft of the drive motor 23 and one end of one side of the conveying roller 21 are both provided with pulleys 24, and the two pulleys 24 are driven by a belt.

[0060] The conveying rollers 21 are arranged in opposite rotation on the frame 1, which provides support and guidance for the transmission of the stainless steel mesh belts 22. The stainless steel mesh belts 22 are arranged on the outer sides of the two conveying rollers 21 to form a continuous conveying surface for carrying and conveying workpieces.

[0061] The drive motor 23 is installed inside the frame 1 to provide power for the conveying mechanism. A pulley 24 is installed on the output shaft of the motor, and the other end of the conveying roller 21 on the opposite side is also provided with a pulley 24, and the two pulleys are connected by a belt to form a transmission system. When the drive motor 23 starts, it will drive the pulley 24 on the output shaft to rotate, and then drive the pulley 24 on the other side of the conveying roller 21 to rotate through the belt transmission. In this way, the two conveying rollers 21 will rotate in opposite directions at the same speed, thereby driving the stainless steel mesh belts 22 to move continuously.

[0062] The workpiece is placed on the stainless steel mesh belt 22, and as the mesh belt moves continuously, the workpiece will be conveyed from the feeding end 2a of the conveying mechanism to the discharging end 2b. In this process, the workpiece will pass through the heating section 31 and the holding section 32 of the tempering furnace 3 in turn to complete the heat treatment process.

[0063] As shown in Figure 3As shown, in one embodiment, the driving member 41 comprises: a shell 411 arranged at one end of the frame body 1; two rails 412 oppositely arranged inside the shell 411; a sliding block 413 in sliding fit with the rails 412; a lead screw 414 rotatably arranged inside the shell 411; a driving motor two 415 arranged inside the shell 411; a transmission table 416 in threaded connection with the lead screw 414; the output shaft of the driving motor two 415 and one end of the lead screw 414 are both provided with a belt pulley two, and the two belt pulleys are driven by a belt; a plurality of sliding holes are formed in the shell 411, and one end of the transmission table 416 and one end of the sliding block 413 are both connected with the feeding platform 42. A fixed table is arranged inside the shell 411, the driving motor two 415 is arranged on the fixed table, an installation hole for accommodating the top end of the lead screw 414 is formed in the fixed table, the bottom end of the lead screw 414 is rotatably connected with the shell 411, and a threaded hole matched with the lead screw 414 is formed in the transmission table 416.

[0064] The shell 411 serves as the main body of the entire driving member, and two opposite parallel rails 412 are arranged inside the shell 411 to guide the sliding of the sliding block 413. The sliding block 413 is in sliding fit with the rails 412, thereby ensuring the stability of the lifting movement.

[0065] The output shaft of the driving motor two 415 and one end of the lead screw 414 are both provided with a belt pulley two, and the two belt pulleys are driven by a belt. When the driving motor two 415 is started, it will drive the belt pulley two on the output shaft to rotate, and then drive the lead screw 414 to rotate through the belt transmission.

[0066] The lead screw 414 is in threaded connection with the threaded hole formed in the transmission table 416. When the lead screw 414 rotates, the transmission table 416 will move up and down along the axial direction of the lead screw 414. At the same time, one end of the transmission table 416 and one end of the sliding block 413 are both connected with the feeding platform 42, so that the lifting movement of the transmission table 416 will drive the feeding platform 42 to lift synchronously.

[0067] The sliding of the sliding block 413 on the rails 412 not only provides additional guiding effect for the lifting of the transmission table 416, but also enhances the stability of the entire driving member. In addition, the plurality of sliding holes formed in the shell 411 allow the sliding block 413 to have a certain degree of freedom during the lifting process, thereby further ensuring the stability of the lifting movement.

[0068] As shown in the drawings, Figure 6 In one embodiment, the feeding platform 42 comprises a fixed disc 421 and a feeding rack 422 connected with each other, one end of the fixed disc 421 is connected with the sliding block 413 and the transmission table 416 respectively, and the feeding rack 422 is a rectangular frame.

[0069] The fixed disc 421 is connected with the sliding block 413 and the transmission table 416 at one end, ensuring the stability of the feeding platform during lifting. The other end is connected with the feeding frame 422, which together constitutes the workpiece bearing platform.

[0070] The feeding frame 422 is designed as a rectangular frame, which not only has sufficient strength and rigidity to bear workpieces of various shapes and sizes, but also facilitates the placement and removal of workpieces. At the same time, the design of the rectangular frame makes the feeding platform more stable during lifting, reducing the shaking caused by irregular workpiece shapes.

[0071] As shown in Figure 2 , Figure 4 and Figure 5 , the two feeding platforms 42 in the present embodiment are arranged at the feeding end 2a and the discharging end 2b of the conveying mechanism 2 respectively; the feeding platform 42 at the feeding end 2a is provided with a pushing member 5 for pushing the workpieces on the feeding platform 42 onto the conveying mechanism 2;

[0072] The pushing member 5 comprises two guide rods 51 arranged inside the feeding frame 422, a second screw rod 52 rotatably arranged inside the feeding frame 422, a transmission plate 53 threadedly connected to the outside of the second screw rod 52, the two ends of the transmission plate 53 being slidably fitted with the guide rods 51, the transmission plate 53 being provided with threads matching the second screw rod 52 and two sliding holes matching the guide rods 51, a baffle 54 arranged on the feeding frame 422, a pushing plate 55 arranged above the baffle 54, the top end of the transmission plate 53 being connected with the pushing plate 55, three sliding holes being formed above the baffle 54, the transmission plate 53 being E-shaped, the three top ends of the transmission plate 53 penetrating through the corresponding sliding holes and being connected with the pushing plate 55, a third drive motor arranged inside the feeding frame 422, a belt pulley three being arranged on the output shaft of the third drive motor and the second screw rod 52, and a belt being arranged between the two belt pulleys three.

[0073] The second screw rod 52 and the guide rod 51 provide guidance and power for the pushing movement. The transmission plate 53 is threadedly connected with the second screw rod 52 and slides along the guide rod 51, achieving precise control of the pushing action. The baffle 54 and the pushing plate 55 together constitute the pushing surface of the workpiece.

[0074] The output shaft of the third driving motor and the screw rod two 52 are provided with a belt pulley three, and are driven by a belt. When the third driving motor is started, it will drive the belt pulley three on the output shaft to rotate, and then drive the screw rod two 52 to rotate through the belt. The rotation of the screw rod two 52 will drive the transmission plate 53 to move along its axial direction. Since the transmission plate 53 is in sliding fit with the guide rod 51, it will maintain stable linear motion. At the same time, the top end of the transmission plate 53 is connected with the pushing plate 55, so that the movement of the transmission plate 53 will drive the pushing plate 55 to move synchronously. When the pushing plate 55 contacts the workpiece, it will push the workpiece from the feeding platform 42 to the conveying mechanism 2.

[0075] The baffle 54 plays a limiting and guiding role. It ensures that the pushing plate 55 does not deviate from the predetermined trajectory during the pushing process, and also prevents the workpiece from slipping or being damaged during the pushing process.

[0076] By integrating the conveying mechanism, the feeding platform and the pushing member, the whole process automation of the workpiece from feeding to discharging is realized. This not only improves the production efficiency, but also reduces the difficulty and cost of manual operation.

[0077] Further, the baffle 54 is embedded with a plurality of balls on the upper part, which reduces the friction between the workpiece and the surface of the baffle 54 through the balls. Two partition strips are arranged on the baffle 54, and the two partition strips are located on both sides of the pushing plate 55.

[0078] The arrangement of the balls aims to further optimize the smoothness of the workpiece during the pushing process and reduce friction loss.

[0079] The arrangement of the balls greatly reduces the direct friction between the workpiece and the surface of the baffle 54. When the pushing plate 55 pushes the workpiece to slide along the baffle 54, the balls act as rolling contact points, effectively reducing the frictional resistance, so that the workpiece can move more smoothly. Not only reduces the surface wear of the workpiece, but also improves the pushing efficiency.

[0080] At the same time, the arrangement of the balls also reduces the wear of the baffle 54 and the pushing plate 55 and other components. In the long run, this helps to prolong the overall life of the equipment, reduce maintenance costs and replacement frequency.

[0081] The two oppositely arranged partition strips play a guiding and limiting role. This ensures that the workpiece does not deviate from the predetermined trajectory during the pushing process of the pushing plate 55, improving the stability and accuracy of the pushing.

[0082] It should be noted that the feeding rack 422 at one end of the discharging end 2b is rotatably provided with a plurality of rollers 6, and the plurality of rollers 6 are distributed along the length of the feeding rack 422.

[0083] The roller 6 greatly reduces the friction between the workpiece and the surface of the discharge rack 422. When the workpiece is removed from the heat treatment equipment and placed on the discharge rack 422, the roller 6 can roll to support the workpiece, reducing the frictional resistance between the workpiece and the discharge rack. This not only helps the workpiece to move more smoothly, but also reduces the surface wear of the workpiece.

[0084] At the same time, it is convenient for the staff to push and reduces the labor intensity. And because of the reduction of frictional resistance, the moving speed of the workpiece on the discharge rack 422 is accelerated. This helps to improve the discharging efficiency and shorten the time from removing the workpiece from the heat treatment equipment to placing it on the discharge rack.

[0085] Specifically, the cooling part 7 is arranged above the conveying mechanism 2, and the cooling part 7 is located at one end of the tempering furnace 3 close to the discharging end 2b and cools the workpiece. The cooling part 7 comprises a plurality of mounting seats 71 arranged on the rack body 1, and two fans 72 are oppositely arranged on the mounting seat 71. Ventilation nets 73 are embedded on both sides of the mounting seat 71. The mounting seat 71 is in U shape

[0086] The cooling part 7 realizes rapid cooling of the workpiece removed from the tempering furnace 3 through the two fans 72 oppositely arranged on the mounting seat 71. The airflow generated by the fan 72 can directly blow on the surface of the workpiece, accelerating the heat dissipation, thereby shortening the cooling time and improving the production efficiency.

[0087] The ventilation nets 73 embedded on both sides of the mounting seat 71 not only provide a channel for the fans 72 to enter and exit the airflow, but also enhance the heat dissipation effect. The ventilation nets 73 can increase the flow area of the airflow, improve the heat dissipation efficiency, and ensure that the workpiece can be quickly and uniformly cooled to the predetermined temperature.

[0088] The efficient and uniform cooling capacity of the cooling part 7 enables the workpiece to quickly reach the temperature state required for subsequent processing or storage. This helps to shorten the time of the entire heat treatment process and improve the production efficiency and response speed of the overall system.

[0089] The tempering furnace 3 in the embodiment comprises a furnace body, and the furnace body has a cavity inside. The cavity is divided into a heating section 31 close to the feeding end 2a and a discharging end 2b close to the heat preservation section 32. The cavity is located above the conveying mechanism 2, and both ends of the cavity are open. A plurality of electric heating nets are arranged above and on both sides of the cavity. The electric heating net is made of high-temperature resistance alloy wire into a mesh belt shape. A plurality of fans 2 are embedded on the top of the cavity. The fan blades of the fan 2 are located above the electric heating net. The main body of the fan is arranged above the tempering furnace 3. A heat insulation shell is arranged outside the fan blade. Ventilation openings are formed in the heat insulation shell. The furnace body is provided with a heat insulation cavity. The heat insulation cavity is filled with heat preservation bricks. The bottom of the rack body 1 is also filled with heat preservation bricks.

[0090] A plurality of electric heating nets are arranged above and on both sides of the chamber interior, and are made of high-temperature resistance alloy wire into a net belt shape, thereby ensuring uniform distribution and efficient transmission of heat.

[0091] The reasonable division of the heating section 31 and the holding section 32 enables the workpiece to enter a holding state after being heated to a predetermined temperature, thereby further ensuring the stability and consistency of the heat treatment effect.

[0092] A plurality of fans II are arranged above the chamber, and air flow is generated through rotation of the fan blades, thereby promoting uniform distribution of heat generated by the electric heating nets in the chamber. Meanwhile, the design of the heat insulation shell outside the fan blades protects the fan blades from high temperature. The arrangement of the fans II also enhances air flow in the chamber, which helps to accelerate the heating and cooling processes of the workpiece and improves the overall heat treatment efficiency.

[0093] The furnace body is provided with a heat insulation cavity, which is filled with heat insulation bricks, thereby effectively reducing heat loss, improving the thermal efficiency of the tempering furnace, reducing energy waste, and ensuring the stability of the temperature in the chamber, thereby providing a good heat treatment environment for the workpiece. The bottom of the frame body 1 is also filled with heat insulation bricks, thereby further enhancing the heat insulation performance of the entire heat treatment system and avoiding the influence of heat on the surrounding environment.

[0094] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "upper", "lower", etc. are based on the positions or location relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0095] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0096] The foregoing is merely illustrative of the principles of the application and various modifications can be made by those skilled in the art without departing from the spirit and scope of the application. The above embodiments are illustrative, and not restrictive, of the scope of the application.

Claims

1. A secondary heat treatment apparatus for steel, characterized in that, Include: The frame (1) is provided with a conveying mechanism (2) for conveying workpieces; The frame (1) is provided with a tempering furnace (3) above the conveying mechanism (2), the tempering furnace (3) has a heating section (31) and a heat preservation section (32) which are communicated with each other, the heating section (31) and the heat preservation section (32) heat and preserve the workpieces respectively; Both ends of the conveying mechanism (2) are provided with lifting mechanisms (4), the lifting mechanisms (4) are used for controlling the lifting of the workpieces; The lifting mechanism (4) includes a driving member (41) and a discharging platform (42), the discharging platform (42) is used for receiving materials, and the driving member (41) is connected with the discharging platform (42) and is used for driving the discharging platform (42) to lift.

2. The secondary heat treatment device for steel material according to claim 1, characterized in that: The conveying mechanism (2) has a feeding end (2a) and a discharging end (2b) for feeding and discharging respectively; The conveying mechanism (2) includes conveying rollers (21) which are arranged in opposite rotation on the frame (1), and stainless steel mesh belts (22) which are arranged in transmission on the outer sides of the two conveying rollers (21); The conveying mechanism (2) further includes a driving motor (23) arranged in the frame (1), and the output shaft of the driving motor (23) and one end of one of the conveying rollers (21) are provided with pulleys (24), and the two pulleys (24) are driven by a belt.

3. The secondary heat treatment device for steel material according to claim 1, characterized in that: The driving member (41) includes: A housing (411) arranged at one end of the frame (1); Two rails (412) arranged in opposite in the housing (411); A sliding block (413) in sliding fit with the rails (412); A lead screw (414) arranged in rotation in the housing (411); A driving motor two (415) arranged in the housing (411); A transmission table (416) in threaded connection with the lead screw (414); The output shaft of the driving motor two (415) and one end of the lead screw (414) are provided with pulleys two, and the two pulleys are driven by a belt; The housing (411) is provided with a plurality of sliding holes, and one end of the transmission table (416) and one end of the sliding block (413) are connected with the discharging platform (42).

4. The secondary heat treatment device for steel material according to claim 3, characterized in that: The discharging platform (42) includes a fixed disc (421) and a discharging frame (422) which are connected with each other, the other end of the fixed disc (421) is connected with the sliding block (413) and the transmission table (416) respectively, and the discharging frame (422) is a rectangular frame.

5. The secondary heat treatment device for steel material according to claim 4, characterized in that: The two discharging platforms (42) are arranged at the feeding end (2a) and the discharging end (2b) of the conveying mechanism (2) respectively. A pushing piece (5) is arranged on the discharging platform (42) at the feeding end (2a), and the pushing piece (5) is used for pushing the workpiece on the discharging platform (42) to the conveying mechanism (2); The pushing piece (5) comprises: Two guide rods (51) arranged inside the discharging rack (422); A screw rod two (52) rotatably arranged inside the discharging rack (422); The outer side of the screw rod two (52) is threadedly connected with a transmission plate (53), and the two ends of the transmission plate (53) are respectively in sliding fit with the guide rods (51); A baffle (54) arranged on the discharging rack (422); A pushing plate (55) arranged above the baffle (54), and the top end of the transmission plate (53) is connected with the pushing plate (55); A driving motor three arranged inside the discharging rack (422), and a belt pulley three is arranged on the output shaft of the driving motor three and the screw rod two (52).

6. The steel secondary heat treatment device according to claim 5, characterized in that: A plurality of rollers (6) are rotatably arranged on the discharging rack (422) at one end of the discharging end (2b), and the plurality of rollers (6) are used for distributing along the length of the discharging rack (422).

7. The steel secondary heat treatment device according to claim 5, characterized in that: The frame body (1) is further provided with a cooling part (7) above the conveying mechanism (2), the cooling part (7) is located at one end of the tempering furnace (3) close to the discharging end (2b) and is used for cooling the workpiece; The cooling part (7) comprises a plurality of mounting seats (71) arranged on the frame body (1), two fans (72) are oppositely arranged on the mounting seat (71), and ventilation nets (73) are embedded on the two sides of the mounting seat (71).

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