Single-toothed track shoe quenching and tempering equipment

Abstract

A single-tooth track shoe quenching and tempering heat treatment equipment, comprising a heating furnace, a press quenching machine tool and a tempering furnace, the heating furnace, the press quenching machine tool and the tempering furnace are arranged in sequence, the heating furnace adopts a heating mode combining a preheating assembly, a gas heating assembly and a circulating fan, the press quenching machine tool comprises a press quenching transmission roller, a press quenching stop plate and a spraying assembly, the press quenching transmission roller can move up and down, and the press quenching stop plate and the spraying assembly are arranged on the upper and lower sides of the press quenching transmission roller respectively, the tempering furnace adopts a heating mode combining an electric heating assembly and a stirring fan, and a spraying cooling station is further arranged at the discharge port of the tempering furnace. The combined heating mode of gas heating in the heating furnace and electric heating in the tempering furnace reduces the production energy consumption, and the press quenching mode is adopted for quenching, so that the quenching deformation of the single-tooth track shoe is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of heat treatment equipment for engineering machinery track plates, specifically to a tempering heat treatment equipment for single-tooth track plates. Background Technology

[0002] With the development and advancement of engineering machinery design and manufacturing technology, the demand for high-alloy steel track shoes for large engineering machinery has increased significantly, leading to continuously higher technical and quality requirements. Track shoes are one of the chassis components of engineering machinery, commonly used in excavators, bulldozers, tracked cranes, pavers, and other engineering machinery. These types of engineering vehicles use tracks as the load-bearing structure, ensuring chassis stability and improving the vehicle's passability under complex working conditions. As the parts in direct contact with the ground, track shoes must withstand the dual pressure of the vehicle's own weight and complex road conditions, significantly impacting vehicle safety and operational efficiency. During vehicle travel and operation, tracks are constantly subjected to repeated impacts and wear from ground debris, large rocks, etc., making them vulnerable parts under harsh operating conditions. Therefore, track shoes are required to possess high wear resistance and good toughness and strength.

[0003] Traditional heat treatment processes for track plates often result in numerous problems, such as cracking, uneven hardness, large deformation, and easy breakage, leading to low heat treatment efficiency and severely impacting the service life of the track plates. Furthermore, the entire equipment consumes a lot of energy, resulting in high production costs. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a heat treatment device for quenching and tempering single-tooth track plates to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A heat treatment device for quenching and tempering a single-tooth track plate includes a heating furnace, a quenching machine, and a tempering furnace. The heating furnace, the quenching machine, and the tempering furnace are arranged sequentially. A workpiece transfer device is provided between the heating furnace and the quenching machine, and between the quenching machine and the tempering furnace. The heating furnace adopts a heating mode combining a preheating component, a gas heating component, and a circulating fan. The workpiece transfer device includes a transfer roller assembly and a translation mechanism acting on the transfer roller assembly. The quenching machine includes a quenching drive roller, a quenching plate, and a spray assembly. The quenching drive roller can move up and down relative to the transfer roller assembly, and the quenching plate and the spray assembly are respectively provided on its upper and lower sides. The tempering furnace adopts a heating mode combining an electric heating component and a stirring fan, and a spray cooling station is also provided at the outlet of the tempering furnace.

[0007] Preferably, the heating furnace is provided with a first idler roller conveyor belt, the two ends of which are respectively arranged through the feed inlet and discharge outlet of the heating furnace, and the direction from the feed inlet to the discharge outlet is defined as the conveying direction of the first idler roller conveyor belt. The internal space of the heating furnace is divided into a preheating zone and multiple heating zones along the conveying direction of the first idler roller conveyor belt, and a furnace zone barrier wall is provided between two adjacent zones. The preheating component is arranged in the preheating zone, and each heating zone is provided with the gas heating component and the circulating fan.

[0008] Preferably, the preheating component includes a high-efficiency heat exchanger, one end of which is connected to the top of the preheating zone of the heating furnace, and the other end is located outside the heating furnace. The gas heating component includes multiple direct-injection gas burners, and the multiple direct-injection gas burners in each heating zone are evenly distributed on the upper and lower sides of the first idler roller conveyor belt.

[0009] Preferably, the furnace lining hot surface is made of insulating bricks, the furnace lining back is made of ceramic fiber board, the furnace lining thickness is 450mm, the furnace top is covered with a folded refractory fiber needle-punched insulating blanket, and the furnace inlet and outlet are respectively provided with insulating curtains.

[0010] Preferably, the workpiece transfer device further includes a transfer frame, the transfer roller assembly is disposed on the top of the transfer frame and its transfer direction is from the heating furnace to the press quenching machine or from the press quenching machine to the tempering furnace, the height of the transfer roller assembly is consistent with the height of the discharge port of the heating furnace, the inlet and outlet of the press quenching machine and the inlet of the tempering furnace, and the translation mechanism is drivenly connected to the transfer frame to drive the transfer roller assembly to reciprocate between the discharge port of the heating furnace and the press quenching machine or between the press quenching machine and the inlet of the tempering furnace.

[0011] Preferably, the translation mechanism includes a movable base, a movable screw, a movable motor, and a movable nut. The movable base is disposed on the ground. The movable screw is rotatably disposed on the movable base with its axis parallel to the transmission direction of the transfer roller assembly. The movable motor is disposed at any end of the movable screw and is drivenly connected to the movable screw. The movable nut is threadedly connected to the movable screw. The bottom of the transfer frame is fixedly connected to the movable nut.

[0012] Preferably, the pressure quenching machine tool further includes a receiving drive roller and a pressure quenching frame. The receiving drive roller is provided on both sides of the pressure quenching frame corresponding to the position of the transfer roller assembly on the workpiece transfer device. A quenching tank is provided at the bottom of the pressure quenching frame. The pressure quenching drive roller, the pressure quenching plate and the spray assembly are all movably mounted on the pressure quenching frame.

[0013] Preferably, the press quenching machine tool is also equipped with a defective product handling system, which includes a parameter monitoring device, a sorting device and an alarm device. The sorting device is located on the side of the receiving transmission roller near the tempering furnace, and the parameter monitoring device and the alarm device are both located on the press quenching machine frame.

[0014] Preferably, the tempering furnace is equipped with a second idler roller conveyor belt, with both ends of the second idler roller conveyor belt passing through the feed inlet and discharge outlet of the tempering furnace, and the direction from the feed inlet to the discharge outlet is defined as the conveying direction of the second idler roller conveyor belt. The internal space of the tempering furnace is divided into multiple tempering heating zones along the conveying direction of the second idler roller conveyor belt, and a furnace zone barrier wall is provided between two adjacent zones. Each tempering heating zone is equipped with the electric heating component and the stirring fan. The furnace top corresponding to each tempering heating zone in the tempering furnace adopts a concave structure. The feed inlet and discharge outlet of the tempering furnace are respectively equipped with heat-insulating curtains.

[0015] Preferably, the electric heating assembly includes multiple finned heaters, with the multiple finned heaters in each tempering heating zone evenly distributed on the upper and lower sides of the second idler roller conveyor belt.

[0016] Compared with existing technologies, the single-tooth track plate quenching and tempering heat treatment equipment provided by this invention reduces production energy consumption by using a combined heating method of gas heating in the heating furnace and electric heating in the tempering furnace. The quenching process employs a pressing quenching method, reducing the occurrence of quenching deformation in the single-tooth track plate. The single-tooth track plate treated by this quenching and tempering heat treatment equipment has a cross-sectional hardness of 44~52HRC, no soft spots on the surface, and a curvature of less than or equal to 0.5mm on the mounting surface and less than or equal to 1.5mm in other areas, all meeting the usage requirements. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This invention provides a structural schematic diagram of a single-tooth track plate tempering and heat treatment device;

[0019] Figure 2 This is a schematic diagram of the heating furnace structure;

[0020] Figure 3 This is a schematic diagram of the workpiece transfer equipment.

[0021] Figure 4 This is a schematic diagram of the structure of a pressure quenching machine.

[0022] Figure 5 This is a schematic diagram of the working process of a pressure quenching machine.

[0023] Figure 6 This is a schematic diagram of the tempering furnace.

[0024] Explanation of reference numerals and components in the accompanying drawings:

[0025] 1. Heating furnace; 101. Circulating fan; 102. First idler roller conveyor belt; 103. Preheating zone; 104. Heating zone; 105. High-efficiency heat exchanger; 106. Direct injection gas burner;

[0026] 2. Press quenching machine tool; 201. Press quenching transmission roller; 202. Press quenching abutment plate; 203. Spray assembly; 204. Receiving transmission roller; 205. Press quenching machine frame; 206. Quenching tank;

[0027] 3. Tempering furnace; 301. Stirring fan; 302. Spray cooling station; 303. Second idler roller conveyor; 304. Tempering heating zone; 305. Finned heater; 306. Concave structure;

[0028] 4. Workpiece transfer equipment; 401. Transfer roller assembly; 402. Transfer frame; 403. Moving base; 404. Moving screw; 405. Moving motor; 406. Moving nut;

[0029] 5. Furnace area partition wall; 6. Insulated curtain; 7. Single tooth track plate. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] See Figures 1-6As shown, a single-tooth track plate quenching and tempering heat treatment equipment includes a heating furnace 1, a press quenching machine 2, and a tempering furnace 3. The heating furnace 1, the press quenching machine 2, and the tempering furnace 3 are arranged in sequence, and a workpiece transfer device 4 is provided between the heating furnace 1 and the press quenching machine 2 and between the press quenching machine 2 and the tempering furnace 3. The above components are described in detail below.

[0032] In this embodiment, the heating furnace 1 employs a heating mode combining a preheating component, a gas heating component, and a circulating fan 101. A first idler roller conveyor belt 102 is installed inside the heating furnace 1, with its two ends passing through the inlet and outlet of the heating furnace 1, respectively. The drive-side bearing of the first idler roller conveyor belt 102 is a high-temperature resistant, large-clearance bearing, and it uses an oil-based automatic heating system. The heating-side bearing is a universal graphite self-lubricating bearing, which effectively ensures service life, reduces the probability of equipment maintenance, and eliminates the hassle of manual maintenance.

[0033] For ease of description, the direction from the feed inlet to the discharge outlet of the heating furnace 1 is defined as the conveying direction of the first idler conveyor belt. The internal space of the heating furnace 1 is sequentially divided into a preheating zone 103 and multiple heating zones 104 along the conveying direction of the first idler conveyor belt. Each preheating zone 103 contains a preheating assembly, and each heating zone 104 contains a gas heating assembly and a circulating fan 101. The preheating assembly includes a high-efficiency heat exchanger 105, one end of which is connected to the top of the corresponding preheating zone 103 of the heating furnace 1, and the other end is located outside the heating furnace 1. This high-efficiency heat exchanger 105 has a large heat exchange area, which can preheat the combustion air inside the heating furnace 1, enabling the gas utilization rate of the gas heating assembly to reach over 80%, thereby reducing operating costs. The gas heating assembly includes multiple direct-injection gas burners 106. These burners are evenly distributed on the upper and lower sides of the first idler conveyor belt 102 in each heating zone 104, a reasonable layout that ensures both sufficient heating power and uniform furnace temperature. Simultaneously, the circulating fan 101 enables forced circulation of hot air within the furnace, resulting in a uniform furnace temperature (within ±5℃ of the same cross-section).

[0034] The furnace lining of heating furnace 1 uses insulating bricks on the hot side and ceramic fiber board on the back, with a lining thickness of 450mm, effectively reducing heat loss. The furnace top of heating furnace 1 is covered with a folded refractory fiber needle-punched insulation blanket. Unlike the suspended insulation blankets used in existing technologies, the folded refractory fiber needle-punched insulation blanket does not have thermal short-circuit points and is not easily dislodged, providing good insulation and a long service life. A furnace zone partition wall 5 is also installed between adjacent zones within heating furnace 1, making each zone relatively independent, reducing cross-flow of furnace gas between zones, and ensuring temperature control accuracy, stability, and insulation precision in each zone. Correspondingly, insulating curtains 6 are also installed at the feed inlet and discharge outlet of heating furnace 1 to reduce heat loss within the furnace and ensure stable temperature control.

[0035] After the single-tooth track plate 7 completes normalizing treatment in the heating furnace 1, it will enter the pressure quenching machine 2 for quenching treatment. The pressure quenching machine 2 includes a pressure quenching drive roller 201, a pressure quenching abutment plate 202, a spray assembly 203, a receiving drive roller 204, and a pressure quenching frame 205. A quenching tank 206 is provided at the bottom of the pressure quenching frame 205, and receiving drive rollers 204 are provided on both sides of the pressure quenching frame 205 corresponding to the feeding mechanism positions on the workpiece transfer device 4. These rollers are used to move the single-tooth track plate 7 from the workpiece transfer device 4 to the pressure quenching drive roller 201 for quenching treatment or to move the quenched single-tooth track plate 7 from the pressure quenching drive roller 201 to the workpiece transfer device 4. The pressure quenching drive roller 201 is vertically movable relative to the feeding mechanism on the workpiece transfer device 4 and is mounted on the pressure quenching frame 205. The pressure quenching abutment plate 202 and spray assembly 203 are respectively provided on its upper and lower sides. The pressure quenching plate 202 is driven by a hydraulic cylinder, replacing the traditional pneumatic drive. The pressure applied to the workpiece during quenching can be adjusted according to actual requirements, solving the problem of insufficient pressure from pneumatic drives and the need for on-site compressed air sources. Because the single-tooth track plate 7 is prone to wobbling during traditional quenching and tempering due to its structural shape, resulting in poor quenching effects and easy deformation, this equipment adopts a pressure quenching method, using the pressure quenching plate 202 to press the single-tooth track plate against the workpiece from top to bottom, preventing wobbling during quenching. Subsequently, the spray assembly 203 adjusts the water spray volume and angle to spray the single-tooth track plate 7, and together with the pressure quenching plate 202 and the pressure quenching transmission roller 201, it moves on the pressure quenching frame 205 into the quenching tank 206 for quenching treatment, thereby achieving the purpose of controlling cooling and deformation.

[0036] In addition, a non-conforming product handling system is also provided on the pressure quenching machine 2. This system includes a parameter monitoring device, a sorting device, and an alarm device. The parameter monitoring device and the alarm device are both installed on the pressure quenching frame 205. The parameter monitoring device can monitor process parameters such as the pre-quenching temperature of the single-tooth track plate, the quenching fluid pressure, the spray cooling time, the quenching fluid temperature, and the residual temperature after quenching. When the above parameters are abnormal, the alarm device will issue an audible and visual alarm. At the same time, a sorting device is provided on the side of the receiving transmission roller 201 near the tempering furnace 3. This sorting device can sort the quenched non-conforming workpiece into the non-conforming workpiece material box.

[0037] After quenching, the single-tooth track plate 7 will be tempered in the tempering furnace 3. The tempering furnace 3 uses a heating mode combining electric heating components and a stirring fan 301. The outlet of the tempering furnace 3 is also equipped with a spray cooling station 302, which sprays the tempered single-tooth track plate 7 evenly from top to bottom to remove residual heat quickly. The tempering furnace 3 is equipped with a second idler conveyor belt 303, with both ends of the second idler conveyor belt 303 passing through the inlet and outlet of the tempering furnace 3, respectively. Similar to the first idler conveyor belt 102, the drive-side bearing of the second idler conveyor belt 303 also uses a high-temperature resistant, large-clearance bearing, while the heating-side bearing uses a universal graphite self-lubricating bearing.

[0038] For ease of description, the direction from the inlet to the outlet of the tempering furnace 3 is defined as the conveying direction of the second idler conveyor belt. The internal space of the tempering furnace 3 is divided into multiple tempering heating zones 304 along the conveying direction of the second idler conveyor belt, with furnace zone isolation walls 5 separating adjacent zones. This ensures that each zone is relatively independent, reducing cross-flow of furnace gas and guaranteeing temperature control accuracy, stability, and heat preservation accuracy in each zone, thereby reducing energy consumption. Simultaneously, heat-insulating curtains 6 are installed at the inlet and outlet of the tempering furnace 3 to reduce heat loss within the furnace and ensure stable temperature control.

[0039] Each tempering heating zone 304 is equipped with an electric heating assembly and a stirring fan 301. The electric heating assembly includes multiple finned heaters 305. The finned heaters 305 use electric heating, resulting in low surface load and long service life. The multiple finned heaters 305 in each tempering heating zone 304 are evenly distributed on the upper and lower sides of the second idler roller conveyor belt 303, with small spacing for uniform heating from top to bottom. The stirring fan 301 has an independent air duct to achieve forced hot air circulation, ensuring uniform furnace temperature. The furnace temperature uniformity (within the same cross section) can reach within ±5℃. Furthermore, to facilitate hot air circulation within the furnace, the furnace top corresponding to each tempering heating zone 304 in the tempering furnace 1 adopts a concave structure 306, further enhancing the uniformity of hot air circulation.

[0040] To improve the ease of movement of workpieces between heating furnace 1 and press quenching machine 2, and between press quenching machine 2 and tempering furnace 3, a workpiece transfer device 4 is provided. This workpiece transfer device 4 includes a transfer roller assembly 401, a transfer frame 402, and a translation mechanism acting on the transfer roller assembly 401. The transfer roller assembly 401 is located on top of the transfer frame 402, and its transmission direction is either from heating furnace 1 to press quenching machine 2 or from press quenching machine 2 to tempering furnace 3. The height of the transfer roller assembly 401 is consistent with the height of the discharge port of heating furnace 1, the inlet and outlet of press quenching machine 2, and the inlet of tempering furnace 3, so that the workpiece can flow smoothly between heating furnace 1, press quenching machine 2, and tempering furnace 3.

[0041] Since there is a distance between the transfer roller assembly 401 and the discharge port of the heating furnace 1, the inlet and outlet of the press quenching machine 2, and the inlet of the tempering furnace 3, a translation mechanism is specially installed on the transfer roller assembly 401 to facilitate the transfer of workpieces. The translation mechanism is driven by the transfer frame 402 to drive the transfer roller assembly 401 to move back and forth between the discharge port of the heating furnace 1 and the press quenching machine 2 or between the press quenching machine 2 and the inlet of the tempering furnace 3, thereby shortening the above-mentioned distance. Specifically, the translation mechanism includes a movable base 403, a movable screw 404, a movable motor 405, and a movable nut 406. The movable base 403 is mounted on the ground. The movable screw 404 is rotatably mounted on the movable base 403 with its axis parallel to the transmission direction of the transfer roller assembly 401. The movable motor 405 is located at either end of the movable screw 404 and is driven by the movable screw 404. The movable nut 406 is threaded onto the movable screw 404, and the bottom of the transfer frame 402 is fixedly connected to the movable nut 406. By controlling the rotation direction of the movable motor 405, the rotation direction of the movable screw 404 is controlled, which in turn controls the movement direction of the movable nut 406 on the movable screw 404, ultimately controlling the movement direction of the transfer roller assembly 401.

[0042] The single-tooth track plate treated by this quenching and tempering heat treatment equipment has a cross-sectional hardness of 44~52HRC, no soft spots on the surface, and the curvature of the track plate mounting surface is less than or equal to 0.5mm, while the curvature of other areas is less than or equal to 1.5mm, all of which meet the usage requirements.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat treatment device for quenching and tempering single-tooth track plates, characterized in that: The system includes a heating furnace, a quenching machine, and a tempering furnace, arranged sequentially. A workpiece transfer device is provided between the heating furnace and the quenching machine, and between the quenching machine and the tempering furnace. The heating furnace employs a heating mode combining a preheating component, a gas heating component, and a circulating fan. The workpiece transfer device includes a transfer roller assembly and a translation mechanism acting on the transfer roller assembly. The quenching machine includes a quenching drive roller, a quenching plate, and a spray assembly. The quenching drive roller can move up and down relative to the transfer roller assembly, and the quenching plate and the spray assembly are respectively provided on its upper and lower sides. The tempering furnace employs a heating mode combining an electric heating component and a stirring fan, and a spray cooling station is also provided at the outlet of the tempering furnace. The workpiece transfer equipment also includes a transfer frame, the transfer roller assembly is disposed on the top of the transfer frame and its transmission direction is from the heating furnace to the press quenching machine or from the press quenching machine to the tempering furnace. The height of the transfer roller assembly is consistent with the height of the discharge port of the heating furnace, the inlet and outlet of the press quenching machine and the inlet of the tempering furnace. The translation mechanism is drivenly connected to the transfer frame to drive the transfer roller assembly to reciprocate between the discharge port of the heating furnace and the press quenching machine or between the press quenching machine and the inlet of the tempering furnace. The translation mechanism includes a movable base, a movable screw, a movable motor, and a movable nut. The movable base is set on the ground. The movable screw is rotatably mounted on the movable base with its axis parallel to the transmission direction of the transfer roller assembly. The movable motor is located at any end of the movable screw and is drivenly connected to the movable screw. The movable nut is threaded onto the movable screw. The bottom of the transfer frame is fixedly connected to the movable nut.

2. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 1, characterized in that: The heating furnace is equipped with a first idler roller conveyor belt, with both ends of the first idler roller conveyor belt passing through the feed inlet and discharge outlet of the heating furnace, respectively. The direction from the feed inlet to the discharge outlet is defined as the conveying direction of the first idler roller conveyor belt. The internal space of the heating furnace is divided into a preheating zone and multiple heating zones along the conveying direction of the first idler roller conveyor belt, and a furnace zone barrier wall is provided between two adjacent zones. The preheating component is located in the preheating zone, and each heating zone is equipped with the gas heating component and the circulating fan.

3. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 2, characterized in that: The preheating assembly includes a high-efficiency heat exchanger, one end of which is connected to the top of the preheating zone of the heating furnace, and the other end is located outside the heating furnace. The gas heating assembly includes multiple direct-injection gas burners, and the multiple direct-injection gas burners in each heating zone are evenly distributed on the upper and lower sides of the first idler roller conveyor belt.

4. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 1, characterized in that: The furnace lining of the heating furnace has a hot surface made of insulating bricks and a back surface made of ceramic fiber board. The furnace lining thickness is 450mm. The furnace top is covered with a folded refractory fiber needle-punched insulating blanket. The inlet and outlet of the heating furnace are respectively equipped with insulating curtains.

5. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 1, characterized in that: The pressure quenching machine tool also includes a receiving drive roller and a pressure quenching frame. The receiving drive roller is provided on both sides of the pressure quenching frame corresponding to the position of the transfer roller assembly on the workpiece transfer device. A quenching tank is provided at the bottom of the pressure quenching frame. The pressure quenching drive roller, the pressure quenching plate and the spray assembly are all movably mounted on the pressure quenching frame.

6. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 5, characterized in that: The press quenching machine is also equipped with a non-conforming product handling system, which includes a parameter monitoring device, a sorting device and an alarm device. The sorting device is located on the side of the receiving transmission roller near the tempering furnace. The parameter monitoring device and the alarm device are both located on the press quenching machine frame.

7. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 1, characterized in that: The tempering furnace is equipped with a second idler roller conveyor belt. The two ends of the second idler roller conveyor belt pass through the feed inlet and discharge outlet of the tempering furnace, respectively, and the direction from the feed inlet to the discharge outlet is defined as the conveying direction of the second idler roller conveyor belt. The internal space of the tempering furnace is divided into multiple tempering heating zones along the conveying direction of the second idler roller conveyor belt, and a furnace zone barrier wall is provided between two adjacent zones. Each tempering heating zone is equipped with the electric heating component and the stirring fan. The furnace top corresponding to each tempering heating zone in the tempering furnace adopts a concave structure. The feed inlet and discharge outlet of the tempering furnace are respectively equipped with heat-insulating curtains.

8. The single-tooth track plate quenching and tempering heat treatment equipment according to claim 7, characterized in that: The electric heating assembly includes multiple finned heaters, and the multiple finned heaters in each tempering heating zone are evenly distributed on the upper and lower sides of the second idler roller conveyor belt.

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