A steel quenching apparatus and a quenching method for production of a tappet steel

Abstract

The present application relates to steel quenching technical field, disclose a kind of steel quenching equipment and quenching method for tappet steel production.The heated steel is arranged and placed on the placing rack first, the placing rack is conveyed to the nozzle by conveying roller, the placing rack is moved to the lower of nozzle again, while the nozzle sprays water to quench the steel on the placing rack, and the treated steel returns to the conveying roller with the placing rack, and the conveying roller transports the treated steel away, so that the workpiece quenching does not need to be arranged singly before quenching in turn, avoids quenching process by worker operating each workpiece alone, improves the efficiency of equipment use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel quenching, in particular to a steel quenching device and a quenching method for tappet steel production. BACKGROUND

[0002] Steel quenching is a heat treatment process that heats steel to a temperature above the critical temperature Ac3 or Ac1, holds it for a period of time, and then rapidly cools it below Ms with a cooling rate greater than the critical cooling rate to induce martensitic transformation. The solid solution treatment of aluminum alloys, copper alloys, titanium alloys, tempered glass and other materials or the heat treatment process with rapid cooling process is also called quenching.

[0003] In the existing quenching device, such as Chinese patent CN117625901B, a rotating mechanism is provided, a transmission motor is started, the transmission motor drives the transmission gear to rotate, the transmission gear drives the second annular pipeline to rotate through the transmission gear ring, the second annular pipeline rotates to drive the internal spray head to rotate, and then the workpiece passing through the second annular pipeline is rotated and sprayed, and the rotating spray of the spray head makes the workpiece not need to rotate, reduces the difficulty of clamping special-shaped workpieces, and improves the production efficiency; by setting the extension mechanism, after the second pipeline is communicated with the first pipeline, the water flow is divided into the second pipeline, and is guided to be inclinedly sprayed out, the inclinedly sprayed water flow moves to the side close to the groove under the pushing of the abutment, and then the water flow sprayed out of the second pipeline can be close to the edge of the groove for targeted flushing, so as to ensure the cooling effect of the edge of the groove in the steel.

[0004] However, there are still the following problems: the workpieces need to be arranged in a single row before quenching, or each workpiece is operated by a worker to perform the quenching process, resulting in low efficiency of the device. SUMMARY

[0005] In view of the defects of the prior art, the present application provides a steel quenching device and a quenching method for tappet steel production, which has the advantages of not needing to arrange the workpieces in a single row before quenching, avoiding the operation of each workpiece by a worker to perform the quenching process, improving the efficiency of the device, and solving the problem of low efficiency of the device caused by the need to arrange the workpieces in a single row before quenching or the operation of each workpiece by a worker to perform the quenching process.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a steel quenching device, comprising a machine body, a quenching mechanism arranged beside the machine body, and an auxiliary mechanism arranged beside the quenching mechanism, wherein the quenching mechanism comprises a placing rack and a spray head, the placing rack is arranged beside the machine body and is used for placing heated steel, the placing rack carrying the heated steel moves to below the spray head, and the spray head is used for spraying water for quenching treatment;

[0007] The auxiliary mechanism comprises a conveying roller, the conveying roller is arranged beside the spray head, the conveying roller is used for conveying the placing rack, the conveying roller conveys the heated steel to beside the spray head, after the placing rack carrying the steel moves to below the spray head for quenching treatment, the placing rack moves back to the conveying roller, and the conveying roller conveys the placing rack carrying the quenched steel away.

[0008] Preferably, the quenching mechanism further comprises a water pool, the water pool is fixedly arranged beside the machine body, the water pool has an open top end, the water pool is used for receiving water for quenching, and the size of the water pool is greater than the covered size of the moving track of the placing rack moving to below the spray head.

[0009] Preferably, a support frame is fixedly installed in the water pool, the size of the support frame is matched with the internal size of the water pool, the support frame penetrates through the open top end of the water pool, the top end of the support frame is located above the top surface of the water pool, a slide rail is fixedly installed on the support frame, the length of the slide rail is matched with the length of the water pool, a moving trolley is slidingly matched with the slide rail, and the placing rack is located between the moving trolley and the conveying roller.

[0010] Preferably, a claw hook is rotatably matched with the moving trolley, the claw hook is located between the moving trolley and the placing rack, the claw hook is located at the same height as the placing rack, the claw hook is matched with the placing rack, the claw hook hooks the placing rack to move together, a handle is rotatably matched with the moving trolley, and the handle is power-connected with the claw hook.

[0011] Preferably, a hydraulic telescopic rod is arranged on the machine body, the fixed rod of the hydraulic telescopic rod is rotatably matched with the machine body, the extension rod of the hydraulic telescopic rod is rotatably matched with the moving trolley, and the extension length of the hydraulic telescopic rod is greater than the length of the water pool.

[0012] Preferably, the slide rail is provided with the placing rack, the water tank top end is fixedly provided with a plurality of suspensions, the suspensions are uniformly distributed in a straight line, the suspensions are fixedly provided with the spray heads, the spray heads are uniformly distributed on the suspensions, the spray heads are downward, the spray coverage area of the spray heads is larger than the moving track area of the slide rail, the spray heads are above the water tank, a water pump is fixedly arranged beside the water tank, the water pump drainage end and the spray heads are communicated, the water pump pumping end is connected with a water supply system, a drain pipe is fixedly arranged at the water tank side lower end, the drain pipe is communicated with the water tank, and the drain pipe is used for draining water in the water tank.

[0013] Preferably, the auxiliary mechanism further comprises a side frame, the side frame is fixedly arranged beside the water tank, the side frame is adjacent to the moving track on the slide rail, a plurality of conveying rollers are rotatably arranged on the side frame, the conveying rollers are uniformly distributed in a straight line, the length of the conveying rollers is matched with the length of the placing rack, the conveying track on the conveying rollers is adjacent to the moving track on the slide rail, the conveying track on the conveying rollers is perpendicular to the moving track on the slide rail, the conveying track on the conveying rollers is at the same height as the moving track on the slide rail, a plurality of chain wheels are rotatably arranged on the side frame, each chain wheel is connected with each conveying roller, a chain is tensioned on the chain wheels, the chain is engaged with the chain wheels, a stepping motor is fixedly arranged on the side frame, and the stepping motor is connected with the chain wheel.

[0014] Preferably, a limiting rail is fixedly arranged on the side frame, the limiting rail track length is matched with the width of the placing rack, a first detection plate is slidably arranged on the limiting rail, the first detection plate is used for detecting the position of the placing rack conveyed on the conveying roller, a spring is arranged in the limiting rail, one end of the spring is connected with the limiting rail, the other end of the spring is connected with the first detection plate, and a first detector is fixedly arranged on the limiting rail, the first detector is used for detecting that the placing rack pushes the first detection plate to move to the end of the limiting rail.

[0015] Preferably, a second detection plate is rotatably arranged in the water tank, the second detection plate is between the slide rail and the conveying roller, the top end of the second detection plate is at the same height as the moving track on the slide rail, the top end of the second detection plate covers the moving track on the slide rail, a torsion spring is sleeved on the shaft of the second detection plate, one end of the torsion spring is connected with the second detection plate, the other end of the torsion spring is connected with the water tank, and a second detector is fixedly arranged on the water tank, the second detector is used for detecting the deflection direction of the second detection plate.

[0016] A quenching method for production of a plunger steel material, using the above-mentioned steel material quenching device, comprising the following steps:

[0017] S1: arranging and placing the heated steel material on the placing rack;

[0018] S2: conveying the placing rack to the side of the spray head by the conveying roller;

[0019] S3: moving the placing rack to the lower side of the spray head, while the spray head sprays water to quench the steel material on the placing rack;

[0020] S4: returning the processed steel material to the conveying roller with the placing rack, and conveying the processed steel material away by the conveying roller.

[0021] Compared with the prior art, the present application provides a steel material quenching device, which has the following beneficial effects:

[0022] 1. The steel material quenching device, by arranging and placing the heated steel material on the placing rack, conveying the placing rack to the side of the spray head by the conveying roller, moving the placing rack to the lower side of the spray head, while the spray head sprays water to quench the steel material on the placing rack, and returning the processed steel material to the conveying roller with the placing rack, and conveying the processed steel material away by the conveying roller, thus avoiding the need to arrange the workpieces individually before quenching, and improving the efficiency of the device.

[0023] 2. The steel material quenching device, by the arrangement of the first detection plate and the second detection plate, the movement direction of the placing rack is detected by the first detection plate and the second detection plate, so as to control the operation and stop of each part, improve the running relationship between the parts, and improve the stability of the device.

[0024] 3. The steel material quenching device, by the arrangement of the spring and the torsion spring, the reset of the first detection plate and the second detection plate is guaranteed, avoiding the running failure caused by the failure of the first detection plate and the second detection plate to reset, and improving the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural distribution diagram of the body of the present application;

[0026] Figure 2 It is a structural distribution diagram of the body of the present application;

[0027] Figure 3 It is a structural distribution diagram of the body of the present application;

[0028] Figure 4 It is a structural distribution diagram of the body of the present application;

[0029] Figure 5 The structure distribution diagram of the moving vehicle of the present application is shown in the figure.

[0030] Figure 6 The structure distribution diagram of the spray head of the present application is shown in the figure.

[0031] Figure 7 The structure distribution diagram of the water pump of the present application is shown in the figure.

[0032] Figure 8 The structure diagram of the auxiliary mechanism of the present application is shown in the figure.

[0033] Figure 9 The structure distribution diagram of the chain of the present application is shown in the figure.

[0034] Figure 10 The structure distribution diagram of the conveying roller of the present application is shown in the figure.

[0035] Figure 11 The structure diagram of the enlarged view of A in the figure. Figure 10

[0036] The structure diagram of the enlarged view of B in the figure. Figure 12 Figure 10

[0037] In the figure: 1, the machine body; 2, the quenching mechanism; 21, the water tank; 22, the support frame; 23, the sliding rail; 24, the moving vehicle; 25, the claw hook; 26, the handle; 27, the hydraulic telescopic rod; 28, the placing rack; 29, the suspension; 210, the spray head; 211, the water pump; 212, the drain pipe; 3, the auxiliary mechanism; 31, the side frame; 32, the conveying roller; 33, the chain wheel; 34, the chain; 35, the stepping motor; 36, the limiting rail; 37, the first detection plate; 38, the spring; 39, the first detector; 310, the second detection plate; 311, the torsional spring; 312, the second detector. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] As introduced in the background, the deficiencies in the prior art exist, in order to solve the above technical problems, the present application proposes a steel quenching equipment and a quenching method for tappet steel production.

[0040] In a typical embodiment of the present application, as Figure 1 ​​As shown, a steel quenching device includes a body 1, a quenching mechanism 2 disposed next to the body 1, and an auxiliary mechanism 3 disposed next to the quenching mechanism 2. The quenching mechanism 2 includes a placement rack 28 and a nozzle 210. The placement rack 28 is disposed next to the body 1. The placement rack 28 is used to place the heated steel. The placement rack 28 carries the heated steel to the bottom of the nozzle 210. The nozzle 210 is used to spray water for quenching treatment.

[0041] The auxiliary mechanism 3 includes a conveyor roller 32, which is located next to the nozzle 210. The conveyor roller 32 is used to transport the placement rack 28, so that the conveyor roller 32 transports the heated steel to the side of the nozzle 210. After the placement rack 28 moves to the bottom of the nozzle 210 and carries the steel for quenching treatment, the placement rack 28 moves back onto the conveyor roller 32, and the conveyor roller 32 transports the placement rack 28 carrying the quenched steel away.

[0042] When using this invention:

[0043] First, the heated steel is arranged on the placement rack 28. The conveyor roller 32 transports the placement rack 28 to the side of the nozzle 210. The placement rack 28 is then moved below the nozzle 210. At the same time, the nozzle 210 sprays water to quench the steel on the placement rack 28. The treated steel returns to the conveyor roller 32 with the placement rack 28. The conveyor roller 32 then transports the treated steel away. Thus, the workpieces do not need to be arranged individually before quenching, avoiding the need for workers to operate each workpiece individually for the quenching process, and improving the efficiency of equipment use.

[0044] Example 2, as Figures 2-7 As shown, the difference from the above embodiment is that the quenching mechanism 2 also includes a water tank 21. A water tank 21 is fixedly installed next to the machine body 1. The top of the water tank 21 is an open end. The water tank 21 is used to receive water used for quenching. The size of the water tank 21 is larger than the coverage size of the movement trajectory of the placement frame 28 moving to the bottom of the nozzle 210.

[0045] Furthermore, a support frame 22 is fixedly installed inside the water tank 21. The size of the support frame 22 is adapted to the internal size of the water tank 21. The support frame 22 passes through the open end of the water tank 21, and the top of the support frame 22 is located above the top surface of the water tank 21. A slide rail 23 is fixedly installed on the support frame 22. The length of the slide rail 23 is adapted to the length of the water tank 21. A moving cart 24 is slidably fitted on the slide rail 23. The placement rack 28 is located between the moving cart 24 and the conveyor roller 32.

[0046] Furthermore, a pawl hook 25 is rotatably fitted on the mobile carriage 24. The pawl hook 25 is located between the mobile carriage 24 and the placement rack 28. The pawl hook 25 and the placement rack 28 are at the same height. The pawl hook 25 is adapted to the placement rack 28 so that the pawl hook 25 hooks the placement rack 28 to move together. A handle 26 is rotatably fitted on the mobile carriage 24. The handle 26 is poweredly connected to the pawl hook 25.

[0047] Further, the hydraulic telescopic rod 27 is arranged on the machine body 1, the fixed rod of the hydraulic telescopic rod 27 is rotationally connected with the machine body 1, the telescopic rod of the hydraulic telescopic rod 27 is rotationally connected with the moving trolley 24, and the length of the hydraulic telescopic rod 27 is greater than the length of the water tank 21.

[0048] Further, the placing rack 28 is arranged on the slide rail 23 in a sliding mode, the plurality of suspensions 29 are fixedly installed on the top end of the water tank 21, the suspensions 29 are uniformly distributed in a straight line, the spray heads 210 are fixedly installed on the suspensions 29, the spray heads 210 are uniformly distributed on the suspensions 29, the spray heads 210 are downwardly arranged, the spray coverage area of the spray heads 210 is greater than the moving track area of the slide rail 23, the spray heads 210 are arranged above the water tank 21, the water pump 211 is fixedly arranged beside the water tank 21, the water outlet of the water pump 211 is connected with the spray heads 210, the water inlet of the water pump 211 is connected with the water supply system, the drain pipe 212 is fixedly installed on the lower end of the side surface of the water tank 21, the drain pipe 212 is connected with the water tank 21, and the drain pipe 212 is used for draining the water in the water tank 21.

[0049] Further, the water supply system required by the quenching device is a prior art, specifically, the water supply system is a water supply communication pipeline composed of pipelines, which is used for conveying water to the spray heads 210.

[0050] During the quenching process, the placing rack 28 with the steel materials is conveyed to the side of the slide rail 23, the hydraulic telescopic rod 27 is started, the moving trolley 24 is driven by the hydraulic telescopic rod 27 to move on the slide rail 23, the moving trolley 24 is driven by the hydraulic telescopic rod 27 to move to the head end, the handle 26 is controlled, the claw hook 25 is deflected by the handle 26, the claw hook 25 is hooked on the placing rack 28, the placing rack 28 is moved below the spray heads 210 on the slide rail 23 of the support frame 22 by the hydraulic telescopic rod 27, the water pump 211 is started, the water pump 211 pumps water into the spray heads 210 on the suspensions 29, the spray heads 210 spray the steel materials on the placing rack 28 for quenching treatment, and the placing rack 28 is sent back to the conveying roller 32 by the moving trolley 24.

[0051] Embodiment 3, as Figures 8-12As shown, the difference from the above embodiment is that the auxiliary mechanism 3 further comprises a side frame 31, the side frame 31 is fixed beside the water tank 21, the side frame 31 is adjacent to the moving track on the slide rail 23, a plurality of conveying rollers 32 are rotatably connected on the side frame 31, the conveying rollers 32 are uniformly distributed in a straight line, the length of the conveying rollers 32 is matched with the length of the placing rack 28, the conveying track on the conveying rollers 32 is adjacent to the moving track on the slide rail 23, the conveying track on the conveying rollers 32 is perpendicular to the moving track on the slide rail 23, the conveying track on the conveying rollers 32 is at the same height as the moving track on the slide rail 23, a plurality of sprockets 33 are rotatably connected on the side frame 31, each sprocket 33 is power-connected with each conveying roller 32, the sprockets 33 are tensioned with a chain 34, the chain 34 is engaged with the sprockets 33, a stepping motor 35 is fixedly installed on the side frame 31, and the stepping motor 35 is power-connected with the single sprocket 33.

[0052] Further, a limiting rail 36 is fixedly installed on the side frame 31, the track length of the limiting rail 36 is matched with the width of the placing rack 28, a first detection plate 37 is slidably connected on the limiting rail 36, the first detection plate 37 is used for detecting the position of the placing rack 28 conveyed on the conveying roller 32, a spring 38 is arranged in the limiting rail 36, one end of the spring 38 is connected with the limiting rail 36, the other end of the spring 38 is connected with the first detection plate 37, and a first detector 39 is fixedly installed on the limiting rail 36, the first detector 39 is used for detecting that the placing rack 28 pushes the first detection plate 37 to move to the end of the limiting rail 36.

[0053] Further, a second detection plate 310 is rotatably connected in the water tank 21, the second detection plate 310 is located between the slide rail 23 and the conveying roller 32, the top end of the second detection plate 310 is at the same height as the moving track on the slide rail 23, the top end of the second detection plate 310 covers the moving track on the slide rail 23, a torsion spring 311 is sleeved on the shaft of the second detection plate 310, one end of the torsion spring 311 is connected with the second detection plate 310, the other end of the torsion spring 311 is connected with the water tank 21, and a second detector 312 is fixedly installed on the water tank 21, the second detector 312 is used for detecting the deflection direction of the second detection plate 310.

[0054] Wherein, the conveying rack 28, the rack 28 with heated steel is placed on the conveying roller 32, the step motor 35 is started, the single sprocket 33 is driven to rotate by the step motor 35, the chain 34 is driven to rotate by the single sprocket 33, the overall sprocket 33 is driven to rotate by the chain 34, the conveying roller 32 is driven to rotate on the side frame 31 by the sprocket 33, the rack 28 is moved by the conveying roller 32, the rack 28 abuts against the first detection plate 37 and drives the first detection plate 37 to move on the limiting rail 36, the first detection plate 37 compresses the spring 38, after the first detection plate 37 touches the first detector 39, the first detector 39 controls the step motor 35 to stop running, so that the rack 28 is aligned with the slide rail 23, when the rack 28 is moved to the slide rail 23 by the claw hook 25 of the moving trolley 24, the rack 28 pushes the second detection plate 310 to deflect, the second detection plate 310 twists the torsional spring 311, the second detector 312 detects the deflection of the second detection plate 310, and the second detector 312 controls the water pump 211 to run, so that the rack 28 moves on the slide rail 23, and the spray head 210 simultaneously performs spray quenching treatment;

[0055] Then, the first detection plate 37 is reset by the spring 38, and the second detection plate 310 is reset by the torsional spring 311, when the rack 28 is placed back on the conveying roller 32 again, the rack 28 pushes the second detection plate 310 to reversely deflect, after the rack 28 is placed back and the moving trolley 24 is reset, the second detector 312 controls the step motor 35 to continue running, so that the conveying roller 32 conveys the steel on the rack 28 after quenching treatment away, and simultaneously conveys new heated steel.

[0056] The working principle of the application is as follows:

[0057] First, the heated steel is arranged and placed on the rack 28, the conveying roller 32 conveys the rack 28 to the side of the spray head 210, the rack 28 is moved to the lower side of the spray head 210, and the spray head 210 sprays water to quench the steel on the rack 28, the treated steel returns to the conveying roller 32 with the rack 28, and the conveying roller 32 conveys the treated steel away, so that the workpiece does not need to be arranged individually before quenching, and the quenching process is performed on each workpiece by workers, the efficiency of the equipment is improved;

[0058] Wherein, when quenching, the rack 28 with steel is transported to the side of the slide rail 23, the hydraulic telescopic rod 27 is started, the moving trolley 24 is moved on the slide rail 23 by the hydraulic telescopic rod 27, the moving trolley 24 is driven by the hydraulic telescopic rod 27 to move to the conveying roller 32, after the moving trolley 24 moves to the head end, the handle 26 is controlled, the claw hook 25 is deflected by the handle 26, the claw hook 25 hooks the rack 28, the rack 28 is moved below the nozzle 210 on the slide rail 23 of the support frame 22 by the hydraulic telescopic rod 27, then the water pump 211 is started, the water pump 211 pumps water into the nozzle 210 on the suspension 29, the nozzle 210 sprays the steel on the rack 28 for quenching treatment, and the rack 28 is sent back to the conveying roller 32 by the moving trolley 24 again;

[0059] When the rack 28 is transported, the rack 28 with heated steel is placed on the conveying roller 32, the stepping motor 35 is started, the single sprocket 33 is rotated by the stepping motor 35, the chain 34 is rotated by the single sprocket 33, the overall sprocket 33 is rotated by the chain 34, the conveying roller 32 is rotated on the side frame 31 by the sprocket 33, the rack 28 is moved by the conveying roller 32, the rack 28 abuts against the first detection plate 37 and drives the first detection plate 37 to move on the limiting rail 36, the first detection plate 37 compresses the spring 38, after the first detection plate 37 touches the first detector 39, the first detector 39 controls the stepping motor 35 to stop running, so that the rack 28 is aligned with the slide rail 23, when the moving trolley 24 moves the rack 28 to the slide rail 23 by the claw hook 25, the rack 28 pushes the second detection plate 310 to deflect, the second detection plate 310 twists the torsional spring 311, the second detection plate 310 is deflected by the second detector 312, the second detector 312 controls the water pump 211 to run, so that the rack 28 moves on the slide rail 23, and the nozzle 210 sprays at the same time for quenching treatment;

[0060] Then, the first detection plate 37 is reset by the spring 38, the second detection plate 310 is reset by the torsional spring 311, when the rack 28 is placed back on the conveying roller 32 again, the rack 28 pushes the second detection plate 310 to reversely deflect, after the rack 28 is placed back and the moving trolley 24 is reset, the second detector 312 controls the stepping motor 35 to continue running, so that the conveying roller 32 transports the steel on the rack 28 after quenching treatment away, and at the same time, new heated steel is transported.

[0061] A quenching method for production of tappet steel, using the steel quenching device, comprising the following steps:

[0062] S1: The heated steel is arranged and placed on the rack 28;

[0063] S2: The conveying roller 32 transports the rack 28 to the side of the nozzle 210;

[0064] S3: the placing rack 28 is moved further downwardly relative to the spray head 210, while the spray head 210 sprays water to quench the steel material on the placing rack 28;

[0065] S4: the treated steel material is returned to the conveying roller 32 with the placing rack 28, and the conveying roller 32 further conveys the treated steel material away.

[0066] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel quenching device, comprising a machine body, a quenching mechanism arranged beside the machine body, and an auxiliary mechanism arranged beside the quenching mechanism, characterized in that: the quenching mechanism comprises a placing rack arranged beside the machine body, the placing rack being used for placing heated steel, and the placing rack carrying the heated steel moves to below a spray head, the spray head being used for spraying water for quenching treatment; the auxiliary mechanism comprises a conveying roller and a side frame, a plurality of conveying rollers are rotatably arranged on the side frame, the conveying rollers are arranged beside the spray head, and the conveying rollers are used for conveying the placing rack, so that the conveying rollers convey the heated steel to beside the spray head, after the placing rack carrying the steel moves to below the spray head for quenching treatment, the placing rack moves back to the conveying rollers, and the conveying rollers convey the placing rack carrying the quenched steel away; a support frame is fixedly arranged in the water pool, a slide rail is fixedly arranged on the support frame, a moving trolley is slidably arranged on the slide rail, a claw hook is rotatably arranged on the moving trolley, and the moving trolley pulls the placing rack by means of the claw hook; a limiting rail is fixedly arranged on the side frame, a length of a track of the limiting rail is matched with a width of the placing rack, a first detection plate is slidably arranged on the limiting rail, the first detection plate is used for detecting a position of the placing rack conveyed on the conveying rollers, a spring is arranged in the limiting rail, one end of the spring is connected with the limiting rail, the other end of the spring is connected with the first detection plate, a first detector is fixedly arranged on the limiting rail, and the first detector is used for detecting that the placing rack pushes the first detection plate to move to an end of the limiting rail; a second detection plate is rotatably arranged in the water pool, the second detection plate is located between the slide rail and the conveying roller, a torsional spring is sleeved on a shaft of the second detection plate, one end of the torsional spring is connected with the second detection plate, the other end of the torsional spring is connected with the water pool, and a second detector is fixedly arranged on the water pool, and the second detector is used for detecting a deflection direction of the second detection plate.

2. The steel quenching device according to claim 1, characterized in that: the water pool is fixedly arranged beside the machine body, a top end of the water pool is an open end, the water pool is used for receiving water used for quenching, and a size of the water pool is greater than a covered size of a moving track of the placing rack moving to below the spray head.

3. The steel quenching device according to claim 2, characterized in that: a size of the support frame is matched with an internal size of the water pool, the support frame penetrates through the open end of the water pool, a top end of the support frame is located above a top surface of the water pool, a length of the slide rail is matched with a length of the water pool, and the placing rack is located between the moving trolley and the conveying roller.

4. The steel quenching device according to claim 3, characterized in that: ​ ​ ​ ​ ​ ​ ​ The claw hook is located between the moving trolley and the placing rack, the claw hook is at the same height with the placing rack, the claw hook is matched with the placing rack, the claw hook hooks the placing rack to move together, the handle is rotationally matched with the moving trolley, and the handle is power connected with the claw hook.

5. The steel quenching device according to claim 4, characterized in that: The machine body is provided with a hydraulic telescopic rod, the fixed rod of the hydraulic telescopic rod is rotationally matched with the machine body, the extension rod of the hydraulic telescopic rod is rotationally matched with the moving trolley, and the extension length of the hydraulic telescopic rod is greater than the length of the pool.

6. The steel quenching device according to claim 5, characterized in that: The placing rack is slidably arranged on the slide rail, a plurality of suspensions are fixedly installed at the top end of the pool, the suspensions are uniformly distributed in a straight line, the spray heads are fixedly installed on the suspensions, the spray heads are uniformly distributed on each suspension, the spray heads are downward, the spray coverage area of the spray heads is greater than the moving track area of the slide rail, the spray heads are located above the pool, a water pump is fixedly arranged beside the pool, the drainage end of the water pump is in communication with the spray heads, the water pumping end of the water pump is connected with a water supply system, a drainage pipe is fixedly installed at the lower end of the side surface of the pool, the drainage pipe is in communication with the pool, and the drainage pipe is used for draining water in the pool.

7. The steel quenching device according to claim 6, characterized in that: The side frame is fixedly arranged beside the pool, the side frame is adjacent to the moving track on the slide rail, the conveying rollers are uniformly distributed in a straight line, the length of the conveying rollers is matched with the length of the placing rack, the conveying track on the conveying roller is adjacent to the moving track on the slide rail, the conveying track on the conveying roller is perpendicular to the moving track on the slide rail, the conveying track on the conveying roller is at the same height with the moving track on the slide rail, a plurality of sprockets are rotationally matched with the side frame, each sprocket is power connected with each conveying roller, the sprockets are tensioned with a chain, the chain is engaged with the sprockets, a stepping motor is fixedly installed on the side frame, and the stepping motor is power connected with the sprocket.

8. The steel quenching device according to claim 7, characterized in that: The top end of the second detection plate is at the same height with the moving track on the slide rail, and the top end of the second detection plate covers the moving track on the slide rail.

9. A quenching method for production of a gudgeon steel material, using the steel material quenching apparatus according to any one of claims 1 to 8, characterized by, The method comprises the following steps: S1: arranging and placing the heated steel on the placing rack; S2: conveying the placing rack to the spray head by the conveying roller; S3: moving the placing rack below the spray head, and spraying water on the placing rack by the spray head to quench the steel; S4: returning the treated steel to the conveying roller with the placing rack, and conveying the treated steel away by the conveying roller.

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