Thrust rod heat treatment hardening and tempering line

Abstract

The invention discloses a thermal treatment hardening and tempering line for a thrust rod, and belongs to the field of thermal treatment. Comprising a conveying assembly, and the conveying assembly comprises a mounting frame; the cleaning assembly is arranged on the conveying assembly, the cleaning assembly comprises a brushing part which is arranged on a mounting frame and is used for cleaning the conveying mesh belt, a shielding part which is used for adjusting the shielding range along with the working state of the brushing part is arranged on the brushing part, and a suction part is arranged on the mounting frame; a spraying part is arranged on one side of the suction part, and a driving part is fixed to the spraying part. According to the thermal treatment hardening and tempering line for the thrust rod, when the conveying mesh belt bears the thrust rod for thermal treatment, the brushing part of the cleaning assembly cleans the mesh belt, the shielding part prevents impurities from scattering, the suction part removes residual impurities, the spraying part sprays a protective agent, and the driving part stably sprays the protective agent. And oil dirt and scale accumulation can be prevented, workpiece pollution and difficult cleaning are avoided, the mechanical property of the thrust rod is guaranteed, and the production quality and the equipment stability are improved.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology, and in particular to a heat treatment tempering line for a thrust rod. Background Technology

[0002] As a key load-bearing and force-transmitting component in automotive suspension systems and engineering machinery transmission systems, the thrust rod's mechanical properties determine the overall vehicle or equipment's driving safety, handling stability, and service life. In actual operating conditions, the thrust rod must withstand alternating loads, impact loads, and torsional moments for extended periods, thus imposing stringent requirements on its strength, hardness, toughness, and fatigue life. Heat treatment and tempering are core processes for improving the comprehensive mechanical properties of thrust rod materials. By controlling the heating temperature, holding time, cooling rate, and tempering parameters, a uniform sorbitic structure can be obtained in the thrust rod, meeting its requirements under complex operating conditions. In the traditional heat treatment and tempering process of thrust rods, the mesh belt conveyor serves as the carrier for the series production process. The specific process is as follows: First, the mesh belt carries the thrust rod to be treated into a continuous heating furnace, where the furnace temperature is precisely controlled at 850-950℃ and held for 1-2 hours to ensure complete austenitization of the workpiece structure, laying the foundation for quenching. After heating, the mesh belt directly and quickly conveys the high-temperature thrust rod into the quenching tank without additional transfer. The workpiece is cooled to below 200℃ in the quenching medium, and the rapid cooling forms a martensitic structure, increasing hardness. After quenching and cleaning and drying, the mesh belt continues to convey the workpiece into a tempering furnace, where the furnace temperature is adjusted to 500-600℃ and held for 2-3 hours to transform martensite into sorbite, reducing internal stress, increasing toughness, and preventing brittle fracture. After tempering, the mesh belt slowly conveys the workpiece to ensure uniform cooling and prevent secondary stress caused by excessively rapid cooling and performance fluctuations or deformation due to uneven cooling. However, in actual production, mesh belt conveyors are prone to problems due to contaminant accumulation. On the one hand, a small amount of quenching oil remains on the surface of the thrust rod after quenching. This oil gradually adheres to the mesh belt surface during the conveying process with the workpiece. Since the mesh belt is constantly exposed to the high temperatures of the heating and tempering furnaces, the adhered oil easily carbonizes, eventually forming hard deposits on the mesh belt surface. On the other hand, the high temperatures in the heating furnace cause oxide scale to form on the surface of the thrust rod. Some of this oxide scale detaches from the workpiece surface and accumulates in the mesh gaps of the mesh belt. This deposit and oxide scale directly contaminate the thrust rods being conveyed subsequently with the continuous transport of the mesh belt. This not only results in obvious oil spots or oxide scale indentations on the workpiece surface but also significantly increases the difficulty of subsequent cleaning processes. If cleaning is incomplete, the residual contaminants will also affect the uniformity of heating during tempering, ultimately affecting the mechanical properties of the thrust rod after tempering. Therefore, it is necessary to design a heat treatment and tempering line for thrust rods.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0004] This invention provides a heat treatment and tempering line for thrust rods to solve the problem of carbonized scale buildup from quenching oil and oxide scale buildup from heating furnaces contaminating thrust rods and increasing cleaning difficulty in mesh belt conveyors.

[0005] The present invention adopts the following technical solution: a heat treatment and tempering line for a thrust rod. It includes a conveying assembly, which includes a mounting frame. Rollers are bearingly mounted on the mounting frame near both ends. Each roller has a shaft, and a conveyor belt connects two sets of rollers. A continuous heating furnace is mounted on the conveying assembly. A cleaning assembly is also included, mounted on the conveying assembly. The cleaning assembly includes a brushing section mounted on the mounting frame for cleaning the conveyor belt. The brushing section has a shielding section whose shielding range adjusts according to the working state of the brushing section. A suction section is mounted on the mounting frame, located on one side of the brushing section, to assist the brushing section in removing residual impurities after cleaning the conveyor belt. A spraying section is located on one side of the suction section to spray a protective agent onto the cleaned conveyor belt. A drive unit is fixed to the spraying section to perform the protective agent spraying action.

[0006] Furthermore, the cleaning brush unit includes a concave frame fixed on the mounting frame. A cylinder is fixed to the upper bottom surface of the concave frame. The output end of the cylinder passes through the concave frame. A support frame with a concave structure is fixed to the telescopic end of the cylinder. A cleaning brush is connected between the inner walls of the support frame through bearings. The cleaning brush is made of nylon filaments and is equipped with a brush shaft. A second motor is fixed to the side of the support frame. The output end of the second motor is connected to one end of the cleaning brush through a coupling.

[0007] Furthermore, two sets of spaced support plates are fixed on both sides of the concave frame, and the four sets of support plates are connected together to fix the cleaning box. A valve is connected to the bottom of the cleaning box, and the valve is connected to external equipment through a hose. Waist grooves adapted to the movement of the brush shaft are opened on both sides of the cleaning box.

[0008] Furthermore, the shielding part includes two sets of symmetrically distributed shielding plates disposed on the upper part of the four sets of support plates. The surface of the shielding plate has an inclined groove. A guide rail is fixed to the horizontal end of the bottom surface of the shielding plate. A contact rod adapted to the guide rail is fixed to the top of the support plate. The two sets of shielding plates are slidably connected to the contact rods at the top of the two sets of support plates on the same side.

[0009] Furthermore, L-shaped friction rods are fixed on both sides of the support frame near both ends, and side blocks are fixed on both sides of the cleaning box. A rotating shaft is installed through the side block via a bearing. Friction wheels are fixed at both ends of the rotating shaft. Two sets of friction wheels symmetrically arranged on the two sets of rotating shafts are in contact with the surface of the friction rods, and the other two sets of friction wheels are in contact with the bottom surface of the two sets of baffles respectively.

[0010] Furthermore, the suction unit includes two sets of support brackets fixed on the mounting frame. A fan unit is connected to the two sets of support brackets. The fan unit has multiple fans. Each fan has a motor shaft. A motor is fixed to the side of one set of support brackets. A drive shaft is fixed to the output end of the motor. Multiple sets of bevel gears are fixed on the drive shaft at intervals. The number of bevel gears is the same as the number of fans in the fan unit. A bevel gear is fixed on the motor shaft of each fan. The bevel gear meshes with the bevel gears.

[0011] Furthermore, the spraying unit includes a mounting box fixed on the mounting frame, a herringbone plate fixed on the mounting box, multiple sets of support platforms fixed between the inner walls of the mounting box, a storage tank fixed through each set of support platforms, a concave structure fixing frame fixed on the storage tank, a horizontally arranged turbine movably mounted on the fixing frame, a lead screw threadedly connected to the center of the turbine, a piston fixed to one end of the lead screw, and the edge of the piston fitting against the inner wall of the storage tank.

[0012] Furthermore, the bottom of the storage tank is connected to a one-way valve, which is connected to an external supply device via a hose. The bottom of the storage tank is also connected to a two-way valve, one end of which is connected to a pipe. One end of the pipe is fixed with a nozzle, which is installed through the herringbone plate. One end of the nozzle has a nozzle head.

[0013] Furthermore, plates are fixed on both sides of the mounting box, and a transmission rod is provided between the two sets of plates via a bearing. Multiple sets of worm gears, the same number as the turbines, are fixed on the transmission rod. The worm gears mesh with the turbines. A forward and reverse motor is fixed on the side of one set of plates, and the forward and reverse motors are connected to one end of the transmission rod via a coupling.

[0014] Furthermore, initially, one side of each of the two sets of baffles is in a state of mutual contact, and the cleaning brush is adapted to gradually extend out of the gap between the two sets of baffles and contact the bottom surface of the conveyor belt.

[0015] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: 1. A heat treatment and tempering line for thrust rods, wherein when the thrust rods are carried by a conveyor belt of a conveyor assembly and undergo heat treatment in a continuous heating furnace, the cleaning component's brushing section cleans the surface of the conveyor belt, and the shielding section adjusts the shielding range according to the brushing state to prevent impurities from scattering; the suction section removes residual oxide scale and other impurities after cleaning, preventing them from accumulating in the gaps between the mesh of the conveyor belt; the spraying section sprays a protective agent after the conveyor belt is cleaned, and the drive section ensures stable spraying action and reduces the adhesion of quenching oil. This avoids the formation of scale and oxide deposits that contaminate subsequent thrust rods, prevents oil spots or oxide scale indentations on the workpiece, reduces the difficulty of subsequent cleaning, and prevents contaminants from affecting the uniformity of workpiece heating during tempering, ensuring the mechanical properties of the thrust rods after tempering, and improving production quality and equipment stability. 2. The cleaning brush is driven to lift and lower by a cylinder and rotated by a motor. The nylon brush can efficiently clean the conveyor belt, providing a foundation for preventing the accumulation of pollutants in the future.

[0016] 3. The cleaning box can store cleaning agent to clean the cleaning brush, the valve facilitates the discharge of waste liquid, and the waist groove provides space for the brush shaft to rise and fall, ensuring continuous and stable cleaning of the brush section.

[0017] 4. The baffle plate is slidably connected to the contact rod via the guide rail, and the inclined groove guides the impurities. The baffle range can be adjusted according to the state of the cleaning section to prevent impurities from scattering and contaminating the equipment.

[0018] 5. By leveraging the linkage between the friction rod, friction wheel, and rotating shaft, the baffle plate automatically opens and closes as the support frame rises and falls, requiring no additional power and improving the coordination of the cleaning components.

[0019] 6. The motor drives multiple fans to operate synchronously through bevel gear transmission, forming a strong suction airflow that can efficiently remove residual impurities after the mesh belt is cleaned, further improving the cleaning effect.

[0020] 7. The protective agent is stored in the storage tank, and the turbine and lead screw work together to drive the piston to extrude the protective agent. The herringbone plate prevents impurities from contaminating the protective agent, providing a stable structure for the protection of the mesh belt spraying.

[0021] 8. One-way valve 1 is used to replenish the protective agent, and one-way valve 2 is used to prevent backflow. The spray pipe and nozzle ensure that the protective agent is evenly sprayed on the conveyor belt, thereby enhancing the corrosion resistance of the conveyor belt.

[0022] 9. The transmission rod and worm gear are driven by the forward and reverse motors to rotate, and the meshing drives the turbine to make the piston reciprocate, realizing the suction and spraying of the protective agent, and providing stable power control for the spraying section.

[0023] 10. In the initial state, the baffle plate fits snugly to prevent impurities. During cleaning, the cleaning brush extends out to contact the mesh belt, ensuring unobstructed cleaning and effective protection when not cleaning, thus improving the practicality of the components. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0025] In the attached diagram: Figure 1 This is an overall schematic diagram of a heat treatment and tempering line for a thrust rod according to this application; Figure 2 for Figure 1 A partial structural diagram; Figure 3 for Figure 2 A partial structural diagram; Figure 4 for Figure 3 A partial structural diagram; Figure 5 for Figure 4 A partial structural diagram; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 for Figure 4 Enlarged view of point B; Figure 8 for Figure 1 A partial structural diagram; Figure 9 for Figure 5 Enlarged view of point C; Figure 10 for Figure 8 Enlarged view of point D; Figure label: 1. Conveying assembly; 11. Mounting frame; 12. Conveyor belt; 13. Base; 131. Motor 1; 14. Sprocket 1; 15. Chain; 16. Rotary wheel; 17. Sprocket 2; 2. Continuous heating furnace; 3. Quenching tank; 4. Tempering furnace; 5. Cleaning components; 51. Cleaning brush section; 511. Concave frame; 512. Cylinder; 513. Support frame; 514. Cleaning box; 515. Support plate; 516. Baffle plate; 517. Guide rail; 518. Motor II; 519. Cleaning brush; 520. Friction rod; 521. Side block; 522. Rotating shaft; 523. Friction wheel; 53. Suction section; 531. Support frame; 532. Fan unit; 533. Motor Shaft; 534, Motor 3; 535, Drive Shaft; 536, Bevel Gear 1; 54, Spraying Section; 541, Mounting Box; 542, Herringbone Plate; 543, Plate; 544, Forward and Reverse Motor; 545, Storage Tank; 546, Pipeline; 547, Spray Pipe; 549, Worm Gear; 550, Fixing Frame; 551, Turbine; 552, Lead Screw; 553, Transmission Rod; 554, Support Platform; 555, One-Way Valve 1. Detailed Implementation

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0027] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1 to 3 As shown, this embodiment of the invention provides a heat treatment tempering line for thrust rods, which is a heat treatment production line. It includes a conveying assembly 1, which includes a mounting frame 11. Rollers 16 are mounted on the mounting frame 11 near both ends. Each roller 16 has a shaft, and a conveyor belt 12 connects the two sets of rollers 16. The conveyor belt 12 carries the thrust rods to be heat treated, allowing them to be transported orderly on the tempering line. A base 13 is fixed to the mounting frame 11, and a motor 131 is fixed to the base 13. The output end of the motor 131 has a sprocket 14, and a second sprocket 17 is located at one end of the shaft. A chain 15 is connected and meshed between the first sprocket 14 and the second sprocket 17. Through the transmission of the chain 15, the power of the motor 131 can be transmitted to the rollers 16, thereby driving the conveyor belt 12 to operate, realizing continuous conveying of the thrust rods and providing a stable material transport guarantee for subsequent heat treatment processes. A continuous heating furnace 2 is installed on the conveying assembly 1, which provides uniform and continuous heating for the thrust rod on the conveyor belt 12, providing the necessary temperature conditions for subsequent quenching. A quenching pool 3 is located at one end of the conveying assembly 1. The heated thrust rod is conveyed into the quenching pool 3 to complete the quenching process, altering the metallographic structure of the thrust rod and improving its hardness and other properties. Simultaneously, the conveying assembly 1 and a tempering furnace 4, which is mounted on the conveying assembly 1, are still located on one side of the quenching pool 3. The quenched thrust rod is conveyed through the conveying assembly 1 to the tempering furnace 4 for tempering treatment, eliminating the internal stress generated during quenching, stabilizing the structure and dimensions of the thrust rod, and enabling it to achieve good comprehensive mechanical properties. In actual thrust rod production heat treatment scenarios, this continuous tempering line structure ensures that the thrust rod undergoes heating, quenching, and tempering processes sequentially, guaranteeing the consistency and stability of heat treatment quality and meeting the stringent mechanical performance requirements of the thrust rod.

[0029] Reference Figures 2-6 As shown, a cleaning component 5 is provided on the conveying assembly 1. This cleaning component 5 is used to clean and maintain the conveyor belt 12 to ensure the stability of the conveying process and the cleanliness of the conveyed items. The cleaning component 5 includes a cleaning brush part 51 provided on the mounting frame 11, and the cleaning brush part 51 includes a concave frame 511 fixed on the mounting frame 11. A cylinder 512 is fixed on the upper bottom surface of the concave frame 511. The output end of the cylinder 512 passes through the concave frame 511, and a support frame 513 with a concave structure is fixed at the telescopic end of the cylinder 512. A cleaning brush 519 is connected to the inner wall of the support frame 513 through a bearing. The cleaning brush 519 is made of nylon filament. The bearing connection allows the cleaning brush 519 to rotate flexibly. The cleaning brush 519 is equipped with a brush shaft, which transmits rotational power. At the same time, a second motor 518 is fixed on the side of the support frame 513. The output end of the second motor 518 is connected to one end of the cleaning brush 519 through a coupling.

[0030] Meanwhile, two sets of spaced-apart support plates 515 are fixed on both sides of the concave frame 511. These four sets of support plates 515 connect and fix the cleaning box 514. The cleaning box 514 contains a special cleaning agent for cleaning the cleaning brush 519. A valve (not shown in the figure) is connected to the bottom of the cleaning box 514, and this valve is connected to external equipment via a hose. In the initial state, the cylinder 512 is not activated. At this time, a portion of the cleaning brush 519 is located inside the cleaning box 514 and is in contact with the cleaning agent inside. Simultaneously, the motor 518 keeps the cleaning brush 519 clean. Furthermore, waist grooves (not shown in the figure) are provided on both sides of the cleaning box 514 to accommodate the movement of the brush shaft. The presence of these waist grooves provides ample space for the brush shaft to move up and down, preventing obstruction during movement.

[0031] In addition, a shielding part is connected to one end of each of the four sets of support plates 515. The shielding part is used to block impurities falling from the conveyor belt 12 when the cleaning brush 519 is not working. The shielding part includes two sets of symmetrically distributed shielding plates 516 disposed on the upper end of the four sets of support plates 515. The surface of the shielding plate 516 has inclined grooves, which help to guide the falling impurities. A guide rail 517 is fixed to the bottom surface of the horizontal end of the bottom surface of the shielding plate 516. At the same time, a contact rod (not shown in the figure) adapted to the guide rail 517 is fixed to the top of the support plate 515. The two sets of shielding plates 516 are slidably connected to the contact rods at the top of the two sets of support plates 515 on the same side. This sliding connection method allows the shielding plate 516 to slide smoothly, thereby realizing the adjustment of the shielding range.

[0032] Furthermore, L-shaped friction rods 520 are fixed on both sides of the support frame 513 near both ends. The friction rods 520 play a transmission role during the lifting and lowering of the support frame 513. Side blocks 521 are fixed on both sides of the cleaning box 514. A rotating shaft 522 is installed through the side block 521 via bearings. Friction wheels 523 are fixed at both ends of the rotating shaft 522. The friction wheels 523 use friction to transmit power. Among them, two sets of friction wheels 523 symmetrically arranged on the two sets of rotating shafts 522 are in contact with the surface of the friction rods 520, and the other two sets of friction wheels 523 are in contact with the bottom surfaces of the two sets of baffles 516 respectively. When cylinder 512 drives support frame 513 to rise and fall, friction rod 520, through contact with friction wheel 523, drives shaft 522 to rotate, thereby causing friction wheel 523, which is in contact with baffle plate 516, to rotate, ultimately achieving sliding of baffle plate 516. Specifically, initially, one side of the two sets of baffle plates 516 is in a state of mutual contact. As sliding progresses, the two sets of baffle plates 516 gradually move away from each other. At this time, simultaneously, cleaning brush 519 gradually extends out of the gap between the two sets of baffle plates 516 and contacts the bottom surface of conveyor belt 12. Then, motor 518 is started to drive cleaning brush 519 to rotate. The rotation direction of cleaning brush 519 is opposite to the conveying direction of conveyor belt 12. This reverse rotation design can more effectively remove impurities on conveyor belt 12 and improve the cleaning effect.

[0033] Reference Figures 6-8As shown, a suction unit 53 is provided on one side of the cleaning unit 51 on the mounting frame 11. This suction unit 53 is used to promptly remove residual impurities from the conveyor belt 12 during the cleaning process, further improving the cleaning effect of the conveyor belt 12. The suction unit 53 includes two sets of support brackets 531 fixed to the mounting frame 11, and a fan unit 532 is connected to each set of support brackets 531. The fan unit 532 has multiple fans, which can form a strong suction airflow. Each fan has a motor shaft 533, which is the power transmission component for the fan rotation. A third motor 534 is fixed to the side of one set of support brackets 531, providing the power source for the rotation of the multiple fans. The output end of the motor 534 is fixed with a drive shaft 535. Multiple sets of bevel gears 536, spaced apart, are fixed on the drive shaft 535. The number of bevel gears 536 matches the number of fans in the fan unit 532. A bevel gear 2 is fixed on the motor shaft 533 of each fan, meshing with bevel gear 536. Through this meshing transmission, the power of the motor 534 is transmitted to the motor shafts 533 of each fan, driving them to rotate and achieving synchronous suction. Simultaneously, a herringbone baffle (not shown in the figure) is fixed between the two sets of support frames 531. This baffle shields the multiple sets of bevel gears 536 and bevel gear 2, preventing impurities from entering the transmission components and ensuring the stability and reliability of the transmission. In actual thrust rod heat treatment production, the suction unit 53 and the cleaning unit 51 work together to further clean the conveyor belt 12, creating favorable conditions for stable thrust rod transport and subsequent heat treatment processes.

[0034] like Figures 8-10 As shown, a spraying section 54 is provided on one side of the suction section 53. The spraying section 54 is used to spray a protective agent onto the cleaned conveyor belt 12 to enhance the corrosion resistance and service life of the belt. The spraying section 54 includes a mounting box 541 fixed on the mounting frame 11. The mounting box 541 stores the protective agent and provides a container for the storage and supply of the protective agent. A herringbone plate 542 is fixed on the mounting box 541. The herringbone plate 542 is used to shield the upper end of the mounting box 541 to prevent external impurities from falling into the mounting box 541 and contaminating the protective agent. Furthermore, multiple sets of support platforms 554 are fixed between the inner walls of the mounting box 541. A storage tank 545 is fixed through each support platform 554. The storage tank 545 stores the protective agent and is the direct storage unit for the protective agent. A concave structure fixing frame 550 is fixed on the storage tank 545. A horizontally arranged turbine 551 is movably arranged on the fixing frame 550. The turbine 551 can rotate flexibly, and a lead screw 552 is threadedly connected to the center of the turbine 551. A piston (not shown in the figure) is fixed to one end of the lead screw 552. The edge of the piston is in contact with the inner wall of the storage tank 545. The rotation of the turbine 551 drives the lead screw 552 to move, thereby pushing the piston to move inside the storage tank 545 to realize the extrusion of the protective agent. Meanwhile, a one-way valve 555 is connected to the bottom of the storage tank 545. The one-way valve 555 is connected to an external supply device through a hose and is used to replenish the protective agent into the storage tank 545. A second one-way valve is also connected to the bottom of the storage tank 545. One end of the second one-way valve is connected to a pipe 546. The pipe 546 is used to transmit the protective agent, and a spray pipe 547 is fixed at one end of the pipe 546. The spray pipe 547 is set through the herringbone plate 542. One end of the spray pipe 547 has a nozzle. The protective agent is evenly sprayed onto the conveyor belt 12 through the spray pipe 547 and the nozzle.

[0035] In addition, plates 543 are fixed on both sides of the mounting box 541, and a drive unit is fixed on the plates 543. A transmission rod 553 is also installed between the two sets of plates 543 via a bearing, and multiple sets of worm gears 549, the same number as the turbines 551, are fixed on the transmission rods 553. The worm gears 549 mesh with the turbines 551, and the rotation of the worm gears 549 drives the turbines 551 to rotate, thus realizing power transmission. At the same time, a forward and reverse motor 544 is fixed on the side of one set of plates 543. The forward and reverse motor 544 is connected to one end of the transmission rod 553 via a coupling. The forward and reverse motor 544 provides a power source for the rotation of the transmission rod 553. The rotation direction of the transmission rod 553 can be controlled by forward and reverse rotation, thereby controlling the rotation direction of the turbines 551, realizing the reciprocating motion of the piston, and completing the suction and spraying of the protective agent. In actual thrust rod heat treatment production, the spraying unit 54 can spray a protective agent in time after the conveyor belt 12 is cleaned, which can effectively protect the belt, extend the service life of the conveyor belt 12, and ensure the long-term operation of the equipment.

[0036] Working Principle: When the thrust rod heat treatment and tempering line is running, the conveyor assembly 1 starts first, and the motor 131 rotates. Through the transmission of sprocket 14, chain 15, and sprocket 17, the rotating wheel 16 rotates, which in turn makes the conveyor belt 12 run continuously. The thrust rod to be heat treated is placed on the conveyor belt 12 and enters the continuous heating furnace 2, quenching tank 3, and then the tempering furnace 4 in sequence. In the continuous heating furnace 2, the thrust rod is heated evenly and continuously to reach the temperature conditions required for quenching. It is then conveyed to the quenching tank 3 to complete the quenching process, which changes its metallographic structure and improves its hardness and other properties. After quenching, the thrust rod is sent to the tempering furnace 4 by another set of conveyor assemblies 1 for tempering treatment to eliminate the internal stress generated by quenching, stabilize the structure and size, and finally obtain good comprehensive mechanical properties. When cleaning and maintenance of the conveyor belt 12 is required, the cleaning assembly 5 begins operation. Cylinder 512 activates, pushing the support frame 513 upwards. At this time, the L-shaped friction rod 520 fixed on the support frame 513 contacts the friction wheel 523, causing the rotating shaft 522 to rotate. The friction wheels 523 at both ends of the rotating shaft 522 rotate accordingly. On one hand, the friction wheels 523, which are in contact with the bottom surface of the baffle plate 516, rotate, causing the two sets of baffle plates 516 to slide along the contact rod at the top of the support plate 515, gradually changing from an initial state of mutual contact to a state of separation, opening up the cleaning space. On the other hand, the rise of the support frame 513 causes the cleaning brush 519 to extend and contact the bottom surface of the conveyor belt 12. Next, motor 518 activates, driving the cleaning brush 519 to rotate in the opposite direction to the conveying direction of the conveyor belt 12, using nylon bristles to efficiently remove impurities from the belt. At the same time, the motor 534 of the suction unit 53 operates, and through the meshing of multiple sets of bevel gears 536 on the drive shaft 535 and bevel gears 2 on the fan motor shaft 533, the multiple sets of fans in the fan unit 532 rotate synchronously, generating suction airflow, and promptly removing the impurities remaining on the conveyor belt 12 during the cleaning process, further improving the cleaning effect. After cleaning, the spraying unit 54 begins operation. The forward and reverse motor 544 starts, driving the transmission rod 553 to rotate via a coupling. Multiple sets of worm gears 549 on the transmission rod 553 rotate accordingly, meshing with the turbine 551 to rotate it. Since the turbine 551 is threadedly connected to the lead screw 552, the rotation of the turbine 551 drives the lead screw 552 to move, which in turn pushes the piston inside the storage tank 545. The piston squeezes the conveyor belt protectant inside the storage tank 545, allowing it to enter the pipe 546 through the second check valve, and then be evenly sprayed onto the cleaned conveyor belt 12 through the spray pipe 547 and nozzle. The first check valve 555 can be connected to an external supply device via a hose to replenish the protectant in the storage tank 545 when needed. The sprayed protectant enhances the corrosion resistance of the conveyor belt 12, effectively extending its service life and ensuring long-term stable operation of the equipment. After the cleaning and spraying operations are completed, cylinder 512 lowers support frame 513, and cleaning brush 519 returns to cleaning box 514, contacting the cleaning agent inside. Simultaneously, under the transmission action of components such as friction rod 520 and friction wheel 523, baffle plate 516 slides and closes, returning to its initial baffle state to prevent impurities on conveyor belt 12 from falling into cleaning box 514. Suction unit 53 and spraying unit 54 also cease operation, and the entire cleaning assembly 5 returns to its initial state, awaiting the next cleaning and maintenance operation on conveyor belt 12, ensuring that conveyor assembly 1 always provides a stable and clean material transport guarantee for the thrust rod heat treatment process.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A heat treatment and tempering line for a thrust rod, characterized in that: include The conveying assembly (1) includes a mounting frame (11), on which rollers (16) are mounted on bearings near both ends. Each roller (16) has a roller shaft, and a conveyor belt (12) is connected between two sets of rollers (16). A continuous heating furnace (2) is mounted on the conveying assembly (1). A cleaning component (5) is provided on the conveying component (1). The cleaning component (5) includes a cleaning brush (51) provided on the mounting frame (11) for cleaning the conveyor belt (12). The cleaning brush (51) is provided with a shielding part that adjusts the shielding range according to the working state of the cleaning brush (51). The mounting frame (11) is provided with a suction part (53) on one side of the cleaning brush (51) to cooperate with the cleaning brush (51) to remove the remaining impurities after cleaning the conveyor belt (12). A spraying part (54) is provided on one side of the suction part (53) to spray the belt protectant onto the cleaned conveyor belt (12). A drive part is fixed on the spraying part (54) to realize the protective agent spraying action.

2. The heat treatment and tempering line for a thrust rod according to claim 1, characterized in that: The cleaning brush unit (51) includes a concave frame (511) fixed on the mounting frame (11). A cylinder (512) is fixed on the upper bottom surface of the concave frame (511). The output end of the cylinder (512) passes through the concave frame (511). A support frame (513) with a concave structure is fixed on the telescopic end of the cylinder (512). A cleaning brush (519) is connected between the inner walls of the support frame (513) by a bearing. The cleaning brush (519) is made of nylon filament and is equipped with a brush shaft. A second motor (518) is fixed on the side of the support frame (513). The output end of the second motor (518) is connected to one end of the cleaning brush (519) through a coupling.

3. A heat treatment and tempering line for a thrust rod according to claim 2, characterized in that: Two sets of spaced support plates (515) are fixed on both sides of the concave frame (511). The four sets of support plates (515) are connected together and fixed to the cleaning box (514). The bottom of the cleaning box (514) is connected to a valve, which is connected to an external device through a hose. The cleaning box (514) has waist grooves on both sides to accommodate the movement of the brush shaft.

4. A heat treatment and tempering line for a thrust rod according to claim 3, characterized in that: The shielding part includes two sets of symmetrically distributed shielding plates (516) disposed on the upper end of the four sets of support plates (515). The surface of the shielding plate (516) has an inclined groove. A guide rail (517) is fixed to the horizontal end of the bottom surface of the shielding plate (516). A contact rod adapted to the guide rail (517) is fixed to the top of the support plate (515). The two sets of shielding plates (516) are slidably connected to the contact rods at the top of the two sets of support plates (515) on the same side.

5. A heat treatment and tempering line for a thrust rod according to claim 4, characterized in that: The support frame (513) has L-shaped friction rods (520) fixed on both sides near its two ends. The cleaning box (514) has side blocks (521) fixed on both sides of its two ends. The side blocks (521) have a rotating shaft (522) through which a bearing passes. The rotating shaft (522) has friction wheels (523) fixed on both ends. The two sets of friction wheels (523) symmetrically arranged on the two sets of rotating shafts (522) are in contact with the surface of the friction rods (520). The other two sets of friction wheels (523) are in contact with the bottom surfaces of the two sets of baffles (516).

6. A heat treatment and tempering line for a thrust rod according to claim 5, characterized in that: The suction unit (53) includes two sets of support brackets (531) fixed on the mounting frame (11). A fan unit (532) is connected to the two sets of support brackets (531). The fan unit (532) has multiple fans. Each fan has a motor shaft (533). A motor (534) is fixed to the side of one set of support brackets (531). A drive shaft (535) is fixed to the output end of the motor (534). Multiple sets of bevel gears (536) are fixed on the drive shaft (535) at intervals. The number of bevel gears (536) is the same as the number of fans in the fan unit (532). A bevel gear (2) is fixed on the motor shaft (533) of the fan. The bevel gear (2) meshes with the bevel gear (536).

7. A heat treatment and tempering line for a thrust rod according to claim 6, characterized in that: The spraying unit (54) includes a mounting box (541) fixed on the mounting frame (11). A herringbone plate (542) is fixed on the mounting box (541). Multiple sets of support platforms (554) are fixed between the inner walls of the mounting box (541). A storage tank (545) is fixed through each set of support platforms (554). A concave structure fixing frame (550) is fixed on the storage tank (545). A horizontally arranged turbine (551) is movably arranged on the fixing frame (550). A lead screw (552) is threadedly connected to the center of the turbine (551). A piston is fixed at one end of the lead screw (552). The edge of the piston is in contact with the inner wall of the storage tank (545).

8. A heat treatment and tempering line for a thrust rod according to claim 7, characterized in that: The bottom of the storage tank (545) is connected to a one-way valve (555), which is connected to an external supply device via a hose. The bottom of the storage tank (545) is also connected to a one-way valve (2), one end of which is connected to a pipe (546). One end of the pipe (546) is fixed with a nozzle (547), which is installed through the herringbone plate (542). One end of the nozzle (547) has a nozzle.

9. A heat treatment and tempering line for a thrust rod according to claim 8, characterized in that: Plates (543) are fixed on both sides of the mounting box (541). A transmission rod (553) is provided between the two sets of plates (543) and a transmission rod (553) is provided between them. Multiple sets of worm gears (549) with the same number as the turbine (551) are fixed on the transmission rod (553). The worm gears (549) mesh with the turbine (551). A forward and reverse motor (544) is fixed on the side of one set of plates (543). The forward and reverse motor (544) is connected to one end of the transmission rod (553) through a coupling.

10. A heat treatment and tempering line for a thrust rod according to claim 9, characterized in that: Initially, one side of the two sets of baffles (516) is in a state of mutual contact, and the cleaning brush (519) is adapted to gradually extend out of the gap between the two sets of baffles (516) and contact the bottom surface of the conveyor belt (12).

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