Quenching heat treatment device and control method thereof

Abstract

The present invention relates to the field of heat treatment technology, and in particular to a quenching heat treatment device and a control method thereof. The quenching heat treatment device includes a quenching mechanism and a transportation mechanism. The transportation mechanism can take out the supporting roller from the heat treatment furnace and transfer it to the quenching mechanism. At the same time, the transportation mechanism keeps the workpiece warm during the transfer of the supporting roller. The quenching mechanism includes a quenching tank, a support structure and a spoiler structure. The quenching tank has a liquid inlet and a liquid outlet. The support structure and the spoiler structure are both arranged in the quenching tank. A plurality of spoiler structures are arranged along the circumference of the inner circumference of the quenching tank. The support structure is configured to support the workpiece. During the quenching process, the spoiler structure works to keep the quenching liquid in a flowing state, so as to avoid the quenching liquid temperature near the workpiece being higher than the temperature at other positions during the quenching process, thereby ensuring the formation of the structure and the local cooling rate of the workpiece.

Description

Technical Field

[0001] The present invention relates to the field of heat treatment technology, and in particular to a quenching heat treatment device and a control method thereof. Background Art

[0002] During the heat treatment of steel, the heated workpiece needs to be cooled at different cooling rates to change the internal structure and properties of the material. When the workpiece is cooled in the quenching tank using a cooling medium, the temperature of the cooling medium near the workpiece will increase significantly due to the high temperature on the workpiece surface, affecting the formation of the structure, and thus making the performance of the workpiece fail to meet the design indicators. In addition, the steam film generated during the oil cooling process and the bubbles generated during the water cooling process are easy to adhere to the workpiece surface, affecting the local cooling rate of the workpiece, and thus affecting the quality of quenching.

[0003] Therefore, a quenching heat treatment device is urgently needed to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a quenching heat treatment device and a control method thereof, which can reduce the temperature difference of the cooling medium at various locations in the quenching tank, ensure the formation of the structure, and at the same time ensure the local cooling speed of the workpiece.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Quenching heat treatment device, comprising:

[0007] Heat treatment furnace, used to heat workpieces at high temperatures;

[0008] A quenching mechanism, comprising a quenching tank, a support structure and a spoiler structure, wherein the quenching tank has a quenching liquid inlet and a quenching liquid outlet, the support structure and the spoiler structure are both arranged in the quenching tank, a plurality of the spoiler structures are arranged circumferentially along the outer periphery of the support structure, and the support structure is configured to support a workpiece;

[0009] The transport mechanism is configured to take the workpiece out of the heat treatment furnace and transfer it to the quenching tank.

[0010] As a preferred technical solution of the above-mentioned quenching heat treatment device, the spoiler structure includes blade fans, and the blade fans are evenly arranged along the circumference of the inner periphery of the quenching tank, and each of the blade fans faces the supporting structure.

[0011] As an optimal technical solution for the above-mentioned quenching heat treatment device, the spoiler structure also includes a guide plate, each of the blade fans is correspondingly provided with a guide plate, the guide plate is arranged at an angle with the bottom of the quenching tank, and the guide plate is configured to drain the quenching liquid into the supporting structure.

[0012] As an optimal technical solution of the above-mentioned quenching heat treatment device, the quenching tank includes a quenching shell and a quenching inner tank, the quenching inner tank is arranged in a chamber formed by the quenching shell, the spoiler structure and the support structure are arranged in the chamber formed by the quenching inner tank, the top of the quenching inner tank has an opening, and a temperature control chamber is formed between the quenching inner tank and the quenching shell.

[0013] As an optimal technical solution of the above-mentioned quenching heat treatment device, the quenching mechanism also includes a quenching liquid inlet pipe, one end of the quenching liquid inlet pipe has the quenching liquid inlet, and one end of the quenching liquid inlet pipe extends into the bottom of the chamber formed by the quenching inner tank, and the other end is located outside the quenching tank; the quenching liquid outlet is opened at the opening of the quenching inner tank.

[0014] As an optimal technical solution for the above-mentioned quenching heat treatment device, the supporting structure includes a limiting frame and a lifting assembly, the lifting assembly is arranged in the area surrounded by the limiting frame, the lifting assembly includes a first lifting rod, a load-bearing platform and supporting feet, the first lifting rod is vertically arranged in the quenching tank, the first lifting rod is fixedly connected to the bottom of the quenching tank, the output end of the first lifting rod is fixedly connected to the load-bearing platform, and a plurality of supporting feet are arranged on the top surface of the load-bearing platform, and the plurality of supporting feet are arranged circumferentially along the outer periphery of the load-bearing platform.

[0015] As a preferred technical solution of the above-mentioned quenching heat treatment device, the transportation mechanism includes a power component, a transmission member, a second lifting rod and an insulation box, the power component can drive the second lifting rod to slide linearly along the transmission member, one end of the second lifting rod is slidably connected to the transmission member, and the other end of the second lifting rod is fixedly connected to the insulation box, an opening and closing component is provided outside the insulation box for opening or closing the insulation box, and a clamping component is provided inside the insulation box, and the clamping component is configured to clamp or release the workpiece.

[0016] As a preferred technical solution of the above-mentioned quenching heat treatment device, the insulation box includes a first insulation shell and a second insulation shell, the first insulation shell and the second insulation shell each have an opening, the opening of the first insulation shell and the opening of the second insulation shell are arranged relative to each other to form a space for accommodating the clamping assembly, the first insulation shell and the second insulation shell are provided with the opening and closing assembly on the same side, and the top of the first insulation shell and the top of the second insulation shell are rotatably connected;

[0017] The opening and closing assembly includes a first telescopic rod and a connecting platform. One of the first insulation shell and the second insulation shell is provided with a first telescopic rod, and the other is provided with a connecting platform. The first telescopic rod is rotatably connected to the connecting platform at one end thereof facing the connecting platform. The first telescopic rod pushes and pulls the connecting platform to separate or bring the first insulation shell and the second insulation shell together.

[0018] As an optimal technical solution for the above-mentioned quenching heat treatment device, the clamping assembly includes a clamping claw, a second telescopic rod, a fixed seat, a fixed platform, a connecting frame and a rotating rod. The fixed seat is fixedly connected to the output end of the second lifting rod, and multiple fixed platforms are arranged circumferentially along the outer circumference of the fixed seat and are located below the fixed seat. The fixed platform is fixedly connected to the fixed seat through a connecting column, and the clamping claw is arranged between adjacent fixed platforms. The clamping claw is rotatably connected to two adjacent fixed platforms. One end of the second telescopic rod is fixedly arranged in the middle of the bottom surface of the fixed platform, and the output end of the second telescopic rod is rotatably connected to the multiple rotating rods through the connecting frame. The rotating rod is rotatably connected to the clamping claw one by one, and the second telescopic rod can drive each of the clamping claws to rotate.

[0019] The present invention also provides a quenching heat treatment device control method, which is applied to any of the quenching heat treatment devices described above, and comprises the following steps:

[0020] The heat treatment furnace heats the workpiece to high temperatures;

[0021] The transport mechanism transfers the workpiece heated to the set temperature to the quenching mechanism;

[0022] After receiving the workpiece, the support structure descends into the quenching tank and is immersed in the quenching liquid in the quenching tank;

[0023] The flow disturbance structure works to disturb the quenching liquid to flow toward the workpiece.

[0024] The present invention has at least the following beneficial effects:

[0025] The quenching mechanism provided by the present invention includes a spoiler structure, which can spoil the quenching liquid in the quenching tank. Compared with the prior art, the spoiler structure works during the quenching process to keep the quenching liquid in a flowing state. This can avoid the quenching liquid temperature near the workpiece being higher than the temperature at other positions during the quenching process, thereby ensuring the formation of the structure. At the same time, the flowing quenching liquid can impact the surface of the workpiece to destroy the steam film or eliminate bubbles, thereby ensuring the local cooling rate of the workpiece.

[0026] The transport component includes an insulation box, and the heated workpiece is placed in the insulation box during the transfer process. The insulation box can keep the workpiece warm during the transfer process to prevent the surface temperature of the workpiece from dropping during the transfer process, thereby ensuring the quality of the heat treatment.

[0027] The method provided by the present invention disturbs the quenching liquid in the quenching tank during the quenching process so that the quenching liquid in the quenching tank flows everywhere, thereby ensuring that the quenching liquid flows in the workpiece in the quenching train, reducing the temperature deviation of the quenching liquid in various parts of the workpiece, and thus ensuring the formation of the workpiece structure and the local cooling rate of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of a quenching heat treatment device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of a quenching mechanism provided in an embodiment of the present invention;

[0031] Figure 3 A top view of a quenching mechanism provided by an embodiment of the present invention;

[0032] Figure 4 A cross-sectional view of a quenching mechanism provided by an embodiment of the present invention;

[0033] Figure 5 A cross-sectional view of a quenching tank provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the structure of a lifting assembly provided in an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the structure of a transport mechanism provided by an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of the structure of the incubator provided in an embodiment of the present invention in an open state;

[0037] Fig. 9 A schematic diagram of the structure of a clamping assembly provided in an embodiment of the present invention;

[0038] Fig.10 It is a structural schematic diagram of a heat treatment furnace.

[0039] In the figure:

[0040] 1. Quenching mechanism; 11. Quenching tank; 111. Quenching shell; 1111. First liquid inlet; 1112. First liquid outlet; 1113. Second liquid outlet; 112. Quenching liner; 1121. Quenching liquid outlet; 113. Temperature control chamber; 114. Quenching liquid inlet pipe; 1141. Quenching liquid inlet; 115. Spacer ring; 116. Guide chamber; 12. Support structure; 121. Limit frame; 122. First lifting rod; 123. Load-bearing platform; 124. Support foot; 13. Spoiler structure; 131. Blade fan; 132. Guide vane;

[0041] 2. Transport mechanism; 21. Transmission member; 22. Second lifting rod; 23. First heat-insulating shell; 231. Sliding groove; 24. Second heat-insulating shell; 25. First telescopic rod; 26. Connecting platform; 27. Clamping claw; 271. First connecting rod; 272. Clamping rod; 273. Clamping plate; 274. Second connecting rod; 28. Second telescopic rod; 29. ​​Fixed seat; 210. Fixed platform; 211. Connecting column; 212. Connecting frame; 213. Rotating rod;

[0042] 3. Heat treatment furnace; 31. Machine frame; 32. Conveying roller; 33. Furnace door; 34. Furnace door frame; 341. Furnace door slot; 35. Receiving platform; 351. Limiting slot. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] The track rollers used in construction machinery are usually quenched, which can increase the hardness and wear resistance of the track rollers and improve their service life. The specific heat treatment process includes heating the track rollers to a certain temperature and then cooling them rapidly to achieve martensitic transformation and increase the hardness of the material. Different track roller materials and quenching media will have different effects on the heat treatment effect. After quenching, the track rollers are usually tempered to reduce internal stress and improve toughness and impact resistance.

[0048] However, during the quenching process, the temperature of the quenching liquid near the roller will increase significantly, affecting the formation of the structure, and thus making the performance of the roller fail to meet the design indicators. In addition, the steam film generated during the oil cooling process and the bubbles generated during the water cooling process are easy to adhere to the surface of the roller, affecting the local cooling speed of the roller, and thus affecting the quality of quenching.

[0049] For this reason, Figures 1 to 9 As shown, a quenching heat treatment device is provided in an embodiment of the present invention, which can play a turbulent role on the quenching liquid, so that the quenching temperature of the supporting wheel accessories will not be significantly higher than the temperature of the quenching liquid at other positions. At the same time, the quenching liquid turbulence will also destroy the steam film or bubbles, thereby ensuring the local cooling rate of the supporting wheel.

[0050] The quenching heat treatment device is used to heat treat the wheel body (track wheel) of engineering machinery, such as Figures 1 to 3As shown, the quenching heat treatment device includes a quenching mechanism 1, a transport mechanism 2 and a heat treatment furnace 3. The heat treatment furnace 3 is used to heat the workpiece at high temperature. The transport mechanism 2 can take out the supporting roller (i.e., the workpiece) from the heat treatment furnace 3 and transfer it to the quenching mechanism 1. At the same time, the transport mechanism 2 keeps the workpiece warm during the transfer of the supporting roller. The quenching mechanism 1 includes a quenching tank 11, a support structure 12 and a spoiler structure 13. The quenching tank 11 has a liquid inlet and a liquid outlet. The support structure 12 and the spoiler structure 13 are both arranged in the quenching tank 11. A plurality of spoiler structures 13 are arranged along the circumference of the inner periphery of the quenching tank 11. The support structure 12 is configured to support the workpiece.

[0051] In the embodiment of the present invention, the quenching mechanism 1 includes a spoiler structure 13, which can spoil the quenching liquid in the quenching tank 11. Compared with the prior art, the spoiler structure 13 works during the quenching process to keep the quenching liquid in a flowing state. This can avoid the quenching liquid temperature near the workpiece being higher than the temperature at other positions during the quenching process, thereby ensuring the formation of the structure. At the same time, the flowing quenching liquid can impact the surface of the workpiece to destroy the steam film or eliminate bubbles, thereby ensuring the local cooling rate of the workpiece.

[0052] In some embodiments, continue to refer to Figure 3 The spoiler structure 13 includes blade fans 131, and the blade fans 131 are evenly arranged along the circumference of the inner periphery of the quenching tank 11, and each blade fan 131 faces the support structure 12. The blade fans 131 face the support structure 12, which can drive the quenching liquid to flow toward the support structure 12, and the support structure 12 flows toward the workpiece, so that the temperature rise of the quenching liquid around the workpiece will be slowed down, and will not be higher than the temperature of the quenching liquid at other positions. At the same time, the blade fans 131 face the support structure 12, and can also guide the quenching liquid to the inner circle of the workpiece, so as to achieve the purpose of providing power for the quenching liquid in the inner circle of the workpiece, which can avoid the quenching liquid in the inner circle of the workpiece from not flowing, causing the inner circle structure of the workpiece to be difficult to form. It should be noted that the specific structure of the blade fans 131 is a prior art and will not be described in detail here.

[0053] Furthermore, the spoiler structure 13 also includes a guide plate 132, and each blade fan 131 is correspondingly provided with a guide plate 132, the guide plate 132 is arranged at an angle with the bottom of the quenching tank 11, and the guide plate 132 is used to guide the quenching liquid into the support structure 12. Specifically, the height of the guide plate 132 at one end facing the blade fan 131 is lower than the height of the guide plate 132 at the other end facing the support structure 12, so that when the blade fan 131 is working, the quenching liquid is disturbed by the blade fan 131 and flows along the inclined direction of the guide plate 132, so that a large amount of quenching liquid can flow to the support structure 12, and the support structure 12 supports the workpiece, so that a large amount of quenching liquid will enter the inner ring of the workpiece (that is, the wheel body) through the bottom of the workpiece, further reducing the quenching liquid temperature of the inner ring of the workpiece (that is, the wheel body) to ensure the formation of the structure. The width of the guide plate 132 is the same as or greater than the outer diameter of the blade fan 131, so that more quenching liquid can enter the inner ring of the workpiece (ie, the wheel body).

[0054] The present invention arranges a blade fan 131 so that the quenching liquid circulates along the guide plate 132 to the workpiece to be quenched, and circulates the heated quenching liquid to the upper layer of the quenching tank 11. The quenching liquid with too high temperature near the workpiece flows out from the quenching liquid outlet 1121 in time, thereby realizing the internal circulation of the quenching liquid in the quenching tank 11 and ensuring the quenching quality.

[0055] In some embodiments, Figure 4 and Figure 5 As shown, the quenching tank 11 includes a quenching shell 111 and a quenching liner 112. The quenching liner 112 is arranged in a chamber formed by the quenching shell 111. The spoiler structure 13 and the support structure 12 are arranged in a chamber formed by the quenching liner 112. That is, the quenching liner 112 is used to contain quenching liquid. The top of the quenching liner 112 has an opening, and a temperature control chamber 113 is formed between the quenching liner 112 and the quenching shell 111. The side wall of the quenching shell 111 is provided with a first liquid inlet 1111 and a first liquid outlet 1112. The first liquid inlet 1111 and the first liquid outlet 1112 are connected to the temperature control chamber 113. The temperature control chamber 113 can contain water to cool the surface of the quenching liner 112, so as to cool the quenching liquid. The height of the first liquid outlet 1112 is less than the height of the first liquid inlet 1111, and the height of the first liquid inlet 1111 is less than the opening height of the quenching tank 112, so that water can cool the quenching tank 112 from top to bottom. The quenching shell 111 and the quenching tank 112 are both made of high temperature resistant metal materials.

[0056] Specifically, the quenching tank 11 is a hollow rectangular parallelepiped structure with one end open. Guide plates 132 and blade fans 131 are respectively arranged at the four corners of the quenching tank 11 , and the guide plates 132 and blade fans 131 are arranged in a one-to-one correspondence.

[0057] The temperature control chamber 113 is connected to an external cooling circulating liquid through the first liquid inlet 1111 and the first liquid outlet 1112. The circulating liquid can be selected as water, ice water or liquid nitrogen. The temperature control chamber 113 can increase the control of the internal quenching liquid. Before the temperature control chamber 113 is provided, the cooling of the quenching tank 11 is only dependent on the external cooling tower through the quenching liquid outlet 1121 and the quenching liquid inlet 1141 to circulate and cool the quenching liquid and control the temperature. After the temperature control chamber 113 is provided, the additional influence on the temperature of the quenching tank 11 can be flexibly controlled by adjusting the liquid in the temperature control chamber 113. The temperature in the quenching tank 11 will not change sharply through the provision of the temperature control chamber 113, thereby stabilizing the quenching liquid temperature and improving the quenching quality.

[0058] In order to ensure that the quenching liquid can circulate in and out of the quenching tank 11, in some embodiments, the quenching mechanism 1 further includes a quenching liquid inlet pipe 114, one end of which has a quenching liquid inlet 1141, and one end of the quenching liquid inlet pipe 114 extends into the bottom of the chamber formed by the quenching inner tank 112, and the other end is located outside the quenching tank 11. The opening of the quenching inner tank 112 has a quenching liquid outlet 1121, so that one end of the quenching liquid inlet pipe 114 is far away from the quenching liquid outlet 1121, which can ensure that the temperature of the quenching liquid flowing out of the quenching liquid outlet 1121 is high, and prevent the cooled quenching liquid from entering the quenching inner tank 112 and flowing out of the quenching liquid outlet 1121 before the temperature is reduced.

[0059] The outer wall of the quenching inner tank 112 is provided with a baffle ring 115, and the baffle ring 115, the quenching inner tank 112 and the quenching outer shell 111 are jointly arranged to form a guide cavity 116, and the guide cavity 116 is not connected to the temperature control cavity 113, so as to prevent the water and the quenching liquid from mixing and causing the temperature of the quenching inner tank 112 to rise. The quenching outer shell 111 is also provided with a second liquid outlet 1113, which is connected to the guide cavity 116 and is not connected to the temperature control cavity 113, so that the quenching liquid with a higher temperature can flow out, and the temperature of the quenching liquid in the quenching inner tank 112 is prevented from rising and affecting the quenching effect.

[0060] In some embodiments, in combination Figure 4 and Figure 6The support structure 12 includes a limit frame 121 and a lifting assembly. The lifting assembly is arranged in the area surrounded by the limit frame 121. The limit frame 121 is used to prevent the workpiece on the lifting assembly from falling. The lifting assembly includes a first lifting rod 122, a load-bearing platform 123 and support legs 124. The first lifting rod 122 is vertically arranged in the quenching tank 11. The first lifting rod 122 is fixedly connected to the bottom of the quenching tank 11. The output end of the first lifting rod 122 is fixedly connected to the load-bearing platform 123. The first lifting rod 122 can drive the load-bearing platform 123 to rise and fall, and the load-bearing platform 123 is used to carry the workpiece, so as to raise or lower the workpiece to be immersed in the quenching liquid. In order to achieve the purpose of positioning the workpiece, a plurality of support legs 124 are arranged on the top surface of the load-bearing platform 123, and the plurality of support legs 124 are arranged circumferentially along the outer periphery of the load-bearing platform 123. It can be understood that the support foot 124 can be located in the inner circle of the workpiece to limit the workpiece. Of course, the support foot 124 can be located on the outer periphery of the workpiece to limit the outer periphery of the workpiece. Specifically, the setting position of the support foot 124 is related to the diameter of the load-bearing platform 123. As long as the workpiece can be limited and the workpiece can be prevented from moving during the quenching process, it will be fine.

[0061] When performing the quenching process, the traditional heat treatment equipment needs to open the door of the heat treatment furnace 3, slide the workpiece to the specified position through a conveyor roller with a certain slope, and then move the workpiece to the quenching tank 11. During this process, the surface temperature of the workpiece will decrease and cannot reach the established heating temperature, which is not conducive to the improvement of the performance after quenching and cooling, and the movement of the workpiece is laborious.

[0062] To this end, in some embodiments, such as Figures 7 to 9 As shown, the transport mechanism 2 includes a power component, a transmission member 21, a second lifting rod 22 and an insulation box. The transmission member 21 is arranged above the treatment furnace and the quenching mechanism 1, and the transmission member 21 is supported by a bracket (not shown in the figure). The insulation box can keep the workpiece warm during the transfer of the workpiece to prevent the surface temperature of the workpiece from dropping during the transfer process. One end of the second lifting rod 22 is slidably connected to the transmission member 21, and the other end of the second lifting rod 22 is fixedly connected to the insulation box, so that the second lifting rod 22 can drive the insulation box to move horizontally and lift at the same time, thereby achieving the purpose of moving the insulation box to a position. An opening and closing component is provided outside the insulation box for opening or closing the insulation box, and a clamping component is provided inside the insulation box, and the clamping component is used to clamp or release the workpiece. For example, the transmission member 21 can be a guide rail or a conveyor belt.

[0063] It should be noted that the power assembly can drive the second lifting rod 22 to slide linearly along the transmission member 21. The power assembly can be a ball screw structure or a cylinder. There is no special limitation in this embodiment. It only needs to enable the transmission member 21 to slide.

[0064] Specifically, Figure 8As shown, the insulation box includes a first insulation shell 23 and a second insulation shell 24, and the first insulation shell 23 and the second insulation shell 24 both have an opening. The opening of the first insulation shell 23 and the opening of the second insulation shell 24 are arranged relative to each other to form a space for accommodating the clamping assembly. The top of the first insulation shell 23 is rotatably connected to the top of the second insulation shell 24. For example, the top of the first insulation shell 23 is rotatably connected to the top of the second insulation shell 24 by a hinge (i.e., a hinge). The first insulation shell 23 and the second insulation shell 24 are provided with an opening and closing assembly on the same side. The opening and closing assembly can be arranged on both sides of the first insulation shell 23, that is, the opening assembly can be arranged on both sides of the second insulation shell 24. Of course, it can also be arranged on only one side, as long as the purpose of opening and closing the first insulation shell 23 and the second insulation shell 24 can be achieved.

[0065] The first heat-insulating shell 23 and the second heat-insulating shell 24 are metal shells, which can keep the workpieces warm.

[0066] The opening and closing assembly includes a first telescopic rod 25 and a connecting platform 26. One of the first insulation shell 23 and the second insulation shell 24 is provided with the first telescopic rod 25, and the other is provided with the connecting platform 26. The first telescopic rod 25 is rotatably connected to the connecting platform 26 at one end facing the connecting platform 26, so that the normal opening of the first insulation shell 23 and the second insulation shell 24 can be ensured. The first telescopic rod 25 pushes and pulls the connecting platform 26 to separate or bring the first insulation shell 23 and the second insulation shell 24 together. Specifically, the first insulation shell 23 is provided with the connecting platform 26, and the second insulation shell 24 is provided with the first telescopic rod 25. The first insulation shell 23 is also provided with a sliding groove 231, and the connecting platform 26 can be slidably installed in the sliding groove 231, so as to provide a limit for the connecting platform 26 when the first insulation shell 23 and the second insulation shell 24 are separated.

[0067] In some embodiments, Fig. 9As shown, the clamping assembly includes a clamping claw 27, a second telescopic rod 28, a fixed seat 29, a connecting frame 212, a rotating rod 213 and a fixed platform 210, wherein one end of the fixed platform 210 extends out of the space formed by the first insulation shell 23 and the second insulation shell 24 and is fixedly connected to the second lifting rod 22, so that the insulation box can be moved with the second lifting rod 22. In order to prevent the clamping assembly from separating from the insulation box, the first insulation shell 23 and the second insulation shell 24 are both provided with semicircular grooves. When the first insulation shell 23 and the second insulation shell 24 are rotatably connected, the semicircular grooves of the first insulation shell 23 and the second insulation shell 24 are spliced ​​to form a through hole, and the fixed seat 29 partially passes through the through hole and is fixedly connected to the second lifting rod 22. A plurality of fixed platforms 210 are arranged along the circumference of the outer periphery of the fixed seat 29 and are located below the fixed seat 29. The fixed platforms 210 are fixedly connected to the fixed seat 29 through connecting columns 211, that is, the connecting columns 211 are located below the fixed seat 29, and the connecting columns 211 are arranged circumferentially on the outer periphery of the fixed seat 29. A clamping jaw 27 is arranged between adjacent fixed platforms 210, and the clamping jaw 27 is rotatably connected to two adjacent fixed platforms 210. One end of the second telescopic rod 28 is fixedly arranged at the middle of the bottom surface of the fixed platform 210, and the output end of the second telescopic rod 28 is rotatably connected to a plurality of rotating rods 213 through a connecting frame 212. The rotating rods 213 are rotatably connected to the clamping jaws 27 in a one-to-one correspondence. The second telescopic rod 28 can drive each clamping jaw 27 to rotate, and the plurality of clamping jaws 27 cooperate to clamp or release the workpiece.

[0068] Specifically, the clamping jaw 27 includes a first connecting rod 271, a clamping rod 272, a second connecting rod 274 and a clamping plate 273. The first connecting rod 271 and the second connecting rod 274 are arranged in parallel, and the first connecting rod 271 and the second connecting rod 274 are respectively rotatably connected to the fixed platform 210. One end of the first connecting rod 271 is rotatably connected to the connecting frame 212 through the rotating rod 213. Specifically, the two ends of the rotating rod 213 are respectively rotatably connected to the connecting frame 212 and the first connecting rod 271, and the other end of the first connecting rod 271 is rotatably connected to the clamping rod 272. 272 is rotatably connected, the clamping rod 272 and the first connecting rod 271 are set at an angle so that the clamping rod 272 faces the central axis of the fixing seat 29, one end of the clamping rod 272 is rotatably connected to the first connecting rod 271, and the other end is fixedly connected to the clamping plate 273, and the two ends of the second connecting rod 274 are rotatably connected to the fixing table 210 and the clamping rod 272, respectively. Multiple clamping plates 273 can enclose a circular space, and each clamping plate 273 can fit with the outer peripheral wall of the workpiece, thereby achieving the purpose of multiple clamping plates 273 working together to clamp the workpiece. For example, the clamping plate 273 is an arc-shaped plate.

[0069] The present invention achieves stable temperature of the workpiece and convenient transportation by cooperating with the heat preservation box through the clamping assembly, avoids the decline of quenching quality caused by temperature drop, and further improves the overall performance of the workpiece.

[0070] like Fig.10 As shown, the heat treatment furnace 3 is an existing equipment, which is mainly composed of a furnace body (not shown in the figure), a frame 31, a conveying roller 32, a furnace door 33, a furnace door frame 34 and a receiving platform 35. The frame 31 supports the conveying roller 32, the furnace body and the furnace door 33. The furnace door 33 is arranged at the opening of the furnace body to close the furnace body. The furnace body is used to heat the workpiece. The furnace door frame 34 has a furnace door groove 341 for installing the limiting furnace door 33. A furnace door groove 341 is arranged on one side of the conveying roller 32. The furnace door 33 is arranged at one end of the conveying roller 32, and a receiving platform 35 is arranged at the other end. The receiving platform 35 has a limiting groove 351. The limiting groove 351 is used to limit the workpiece from moving too far under the action of inertia, so as to ensure that the transportation mechanism 2 can accurately clamp the workpiece.

[0071] In an embodiment of the present invention, a quenching heat treatment device control method is also provided, which is applied to the above-mentioned quenching heat treatment device. The quenching heat treatment device control method comprises the following steps:

[0072] S1, heat treatment furnace 3 heats the workpiece at high temperature;

[0073] S2, the transport mechanism 2 transfers the workpiece heated to the set temperature to the quenching mechanism 1;

[0074] S3, after receiving the workpiece, the support structure 12 descends into the quenching tank 11 and is immersed in the quenching liquid in the quenching tank 11;

[0075] S4, the flow disturbance structure 13 works to disturb the quenching liquid to flow toward the workpiece.

[0076] The method provided by the present invention disturbs the quenching liquid in the quenching tank 11 during the quenching process so that the quenching liquid in the quenching tank 11 flows everywhere. In this way, the quenching liquid can flow when the workpiece is in the quenching tank 11, and the temperature deviation of the quenching liquid in various parts of the workpiece is reduced, thereby ensuring the formation of the workpiece structure and the local cooling rate of the workpiece.

[0077] The above-mentioned quenching heat treatment device control method specifically includes the following steps:

[0078] (1) The workpiece is heat treated in the heat treatment furnace 3. At the same time, the quenching liquid in the external cooling tower enters the quenching tank 11 through the quenching liquid inlet pipe 114. When the quenching liquid rises to the position of the quenching liquid outlet 1121, the quenching liquid can flow back to the cooling tower, and the quenching tank 11 enters the standby state;

[0079] Specifically, the workpiece is heat treated in the heat treatment furnace 3. At the same time, the quenching liquid in the external cooling tower is injected into the quenching tank 112 through the quenching liquid inlet pipe 114. When the quenching liquid rises to the quenching liquid outlet 1121, it enters the guide cavity 116. The quenching liquid flows back to the cooling tower through the guide cavity 116 and the second liquid outlet 1113, and the quenching tank 11 enters the standby state.

[0080] (2) After the workpiece is heated to the set temperature in the heating furnace, the workpiece is located in the limiting groove 351 of the heat treatment furnace 3, and moves to the top of the workpiece. After the heat preservation box is opened, the clamping assembly in the heat preservation box moves to open;

[0081] Specifically, after the workpiece is heated to the set temperature in the heating furnace, it slides into the limiting groove 351 through the conveying roller 32 in the heat treatment furnace 3, and the second lifting rod 22 drives the heat preservation box to move above the workpiece, and the first telescopic rod 25 extends to open the first heat preservation shell 23 and the second heat preservation shell 24, and then the second telescopic rod 28 extends, and the clamping jaws 27 are pressed down to open the multiple clamping jaws 27;

[0082] (3) The heat preservation box moves down to the workpiece position, the clamping assembly retracts to clamp the workpiece, the heat preservation box is closed as a whole and then moves up, and then the clamping mechanism is moved to the top of the quenching tank 11;

[0083] Specifically, the second lifting rod 22 is extended to move the insulation box down to the workpiece position, and then the second telescopic rod 28 is retracted, the clamping claw 27 clamps the workpiece, the second lifting rod 22 is retracted, and at the same time the first telescopic rod 25 is retracted, the first insulation shell 23 and the second insulation shell 24 are closed to keep the workpiece warm, and then the clamping mechanism is moved above the quenching tank 11;

[0084] (4) The heat preservation box is moved down, and the clamping assembly is moved down to the top of the quenching tank 11. The heat preservation box is then opened, and the clamping assembly is opened. At the same time, the lifting assembly is used to receive the workpiece released by the clamping assembly. The lifting assembly then descends, and the workpiece is completely immersed in the quenching liquid. During the quenching process, the spoiler structure works to allow the cooled quenching liquid to continuously flow to the workpiece. The quenching liquid with too high a temperature near the workpiece flows out through the quenching liquid outlet 1121, thereby ensuring that the quenching liquid temperature near the workpiece in the quenching tank 11 is uniform, thereby improving the quenching quality of the workpiece. After quenching is completed, the workpiece is manually taken out.

[0085] Specifically, the second lifting rod 22 is extended to move the clamping assembly down to above the quenching tank 11, then the first insulation shell 23 and the second insulation shell 24 are opened, the first lifting rod 122 is raised, the second telescopic rod 28 is extended, the clamping claw 27 is opened, and the workpiece is placed on the load-bearing platform 123, and then the first lifting rod 122 is lowered to completely immerse the workpiece in the quenching liquid. During the quenching process, the blade fan 131 is powered on and started, so that the cooled quenching liquid continuously flows to the workpiece along the guide plate 132. The quenching liquid with too high temperature near the workpiece flows to the upper layer of the quenching liner 112 and flows out through the second liquid outlet 1113, so as to ensure that the temperature of the quenching liquid near the workpiece in the quenching tank 11 is uniform and the quenching quality of the workpiece is improved. After quenching is completed, the workpiece is manually taken out.

[0086] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A quenching heat treatment device, characterized in that: include: A heat treatment furnace (3), used for heating the workpiece at high temperature; A quenching mechanism (1) comprises a quenching tank (11), a support structure (12) and a spoiler structure (13), wherein the quenching tank (11) has a quenching liquid inlet (1141) and a quenching liquid outlet (1121), the support structure (12) and the spoiler structure (13) are both arranged in the quenching tank (11), a plurality of the spoiler structures (13) are arranged along the circumference of the outer periphery of the support structure (12), and the support structure (12) is configured to support a workpiece; A transport mechanism (2) configured to take the workpiece out of the heat treatment furnace (3) and transfer it to the quenching tank (11); The transport mechanism (2) comprises a power assembly, a transmission member (21), a second lifting rod (22) and an insulation box, wherein the power assembly is capable of driving the second lifting rod (22) to slide linearly along the transmission member (21), one end of the second lifting rod (22) is slidably connected to the transmission member (21), and the other end of the second lifting rod (22) is fixedly connected to the insulation box, an opening and closing assembly is arranged outside the insulation box for opening or closing the insulation box, and a clamping assembly is arranged inside the insulation box, and the clamping assembly is configured to clamp or release the workpiece; The heat preservation box comprises a first heat preservation shell (23) and a second heat preservation shell (24), the first heat preservation shell (23) and the second heat preservation shell (24) both having an opening, the opening of the first heat preservation shell (23) and the opening of the second heat preservation shell (24) being arranged opposite to each other to form a space for accommodating the clamping assembly, the opening and closing assembly being arranged on the same side of the first heat preservation shell (23) and the second heat preservation shell (24), and the top of the first heat preservation shell (23) and the top of the second heat preservation shell (24) being rotatably connected; The opening and closing assembly comprises a first telescopic rod (25) and a connecting platform (26); one of the first heat-insulating shell (23) and the second heat-insulating shell (24) is provided with the first telescopic rod (25), and the other is provided with the connecting platform (26); one end of the first telescopic rod (25) facing the connecting platform (26) is rotatably connected to the connecting platform (26); the first telescopic rod (25) pushes and pulls the connecting platform (26) to separate or bring the first heat-insulating shell (23) and the second heat-insulating shell (24) together.

2. The quenching heat treatment device according to claim 1, characterized in that: The spoiler structure (13) comprises blade fans (131), and the blade fans (131) are evenly arranged along the circumference of the inner periphery of the quenching tank (11), and each of the blade fans (131) faces the supporting structure (12).

3. The quenching heat treatment device according to claim 2, characterized in that: The spoiler structure (13) further comprises a guide plate (132), each of the blade fans (131) being provided with a corresponding guide plate (132), the guide plate (132) being arranged at an angle with the bottom of the quenching tank (11), and the guide plate (132) being configured to guide the quenching liquid into the supporting structure (12).

4. The quenching heat treatment device according to claim 1, characterized in that: The quenching tank (11) comprises a quenching shell (111) and a quenching liner (112); the quenching liner (112) is arranged in a chamber formed by the quenching shell (111); the spoiler structure (13) and the support structure (12) are arranged in a chamber formed by the quenching liner (112); the top of the quenching liner (112) has an opening; and a temperature control chamber (113) is formed between the quenching liner (112) and the quenching shell (111).

5. The quenching heat treatment device according to claim 4, characterized in that: The quenching mechanism (1) further comprises a quenching liquid inlet pipe (114), one end of which is provided with the quenching liquid inlet (1141), and one end of which extends into the bottom of the chamber formed by the quenching inner tank (112), and the other end of which is located outside the quenching tank (11); the quenching liquid outlet (1121) is provided at the opening of the quenching inner tank (112).

6. The quenching heat treatment device according to claim 1, characterized in that: The support structure (12) comprises a limiting frame (121) and a lifting component, wherein the lifting component is arranged in an area surrounded by the limiting frame (121), and the lifting component comprises a first lifting rod (122), a load-bearing platform (123) and supporting feet (124), wherein the first lifting rod (122) is vertically arranged in the quenching tank (11), the first lifting rod (122) is fixedly connected to the bottom of the quenching tank (11), the output end of the first lifting rod (122) is fixedly connected to the load-bearing platform (123), and a plurality of supporting feet (124) are arranged on the top surface of the load-bearing platform (123), and the plurality of supporting feet (124) are arranged circumferentially along the outer periphery of the load-bearing platform (123).

7. The quenching heat treatment device according to claim 1, characterized in that: The clamping assembly comprises a clamping claw (27), a second telescopic rod (28), a fixed seat (29), a fixed platform (210), a connecting frame (212) and a rotating rod (213); the fixed seat (29) is fixedly connected to the output end of the second lifting rod (22); a plurality of fixed platforms (210) are arranged along the circumference of the outer periphery of the fixed seat (29) and are located below the fixed seat (29); the fixed platforms (210) are fixedly connected to the fixed seat (29) via connecting columns (211); adjacent fixed platforms (210) are connected to the fixed seat (29) via connecting columns (212); The clamping jaw (27) is arranged between the two adjacent fixed platforms (210), and the clamping jaw (27) is rotatably connected to two adjacent fixed platforms (210). One end of the second telescopic rod (28) is fixedly arranged at the middle of the bottom surface of the fixed platform (210). The output end of the second telescopic rod (28) is rotatably connected to a plurality of rotating rods (213) through the connecting frame (212). The rotating rods (213) are rotatably connected to the clamping jaws (27) in a one-to-one correspondence. The second telescopic rod (28) can drive each of the clamping jaws (27) to rotate.

8. A method for controlling a quenching heat treatment device, characterized in that: The quenching heat treatment device according to any one of claims 1 to 7 comprises the following steps: The heat treatment furnace (3) heats the workpiece at high temperature; The transport mechanism (2) transfers the workpiece heated to a set temperature to the quenching mechanism (1); After receiving the workpiece, the support structure (12) descends into the quenching tank (11) and is immersed in the quenching liquid in the quenching tank (11); The disturbing structure (13) works to disturb the quenching liquid to flow toward the workpiece.

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