A heat treatment lifting appliance for automatic cooling liquid injection in a cavity

Abstract

The present application relates to a kind of heat treatment hangers for cavity automatic injection cooling fluid, comprising: hanger assembly and cavity automatic injection system;Cavity automatic injection system is set on hanger assembly, cavity automatic injection cooling fluid system includes: injection system rotating arm and cooling pipeline mechanism, injection system rotating arm includes liquid passage and cooling pipeline mechanism, liquid passage connects external cooling fluid system input cooling fluid;Cooling pipeline mechanism includes cooling pipeline and the reel device for fixing cooling pipeline, liquid passage is communicated with cooling pipeline;When the part to be processed needs to be cooled, injection system rotating arm rotates and drives liquid passage mechanism to rotate to the corresponding position above the cavity of the part to be processed, reel device releases cooling pipeline based on control signal and extends into cavity to inject cooling fluid, to realize the cooling of the cavity of the part to be processed.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of heat treatment hanger field, especially a kind of heat treatment device for inner cavity automatic injection cooling liquid. BACKGROUND

[0002] At present, the heat treatment of conical shape parts, the common heat treatment hanger and hanging tray are difficult to be reliably fixed. Figure 1 As shown, the existing process method is generally welded on the conical shape part, and the ring is cut off after heat treatment. When the weight of the conical shape part is large, the ring must be made of thick material to be reliable, which causes material waste. Since the ring is welded, the processing efficiency is also affected after the heat treatment. In addition, the conical shape part requires a test rod during heat treatment, and the test rod should be placed in a specific position of the conical shape part during heat treatment. The existing process method is to bind the heat treatment test rod on the conical shape part with iron wire after welding the ring. Since the conical shape part is conical, the method of binding and fixing the furnace test rod is easy to slip and fall. In addition, when the part is quenched into the quenching liquid, the air in the inner cavity of the part cannot be discharged, and the cooling liquid is difficult to enter the inner cavity. Even if there is liquid in the inner cavity, the liquid in the blind hole cavity cannot be circulated, so that the temperature of the liquid in the inner cavity is higher than that of the outside liquid, and the cooling effect is far less than that of the outer surface of the part, resulting in uneven hardness of the surface of the part.

[0003] Therefore, in order to solve the above problems of the prior art, it is urgent to provide a heat treatment hanger for parts with blind hole cavity, especially a heat treatment hanger for automatic injection of cooling liquid in the inner cavity, which is reusable and universal for multiple specifications and models, to solve the problem of uneven surface hardness caused by uneven cooling of the inner and outer parts with blind hole cavity. SUMMARY

[0004] The present application provides a heat treatment hanger for automatic injection of cooling liquid in the inner cavity, which is a heat treatment hanger for parts with blind hole cavity, to solve the problem of uneven surface hardness caused by uneven cooling of the inner and outer parts with blind hole cavity.

[0005] In order to achieve the above purpose, the present application provides a heat treatment hanger for automatic injection of cooling liquid in the inner cavity, which comprises:

[0006] The hanger assembly comprises a lifting adjusting assembly and a positioning frame assembly, and the lifting assembly is arranged on the positioning frame assembly; and

[0007] The inner cavity automatic injection system is arranged on the positioning frame assembly, and the inner cavity automatic injection system further comprises:

[0008] The liquid injection system rotating arm is arranged on the positioning frame assembly, and a liquid passage is arranged in the liquid injection system rotating arm. The liquid passage is connected to an external cooling liquid system to input cooling liquid when the liquid passage is in operation.

[0009] The cooling pipeline mechanism is arranged on the positioning frame assembly and connected to the liquid injection system rotating arm. The liquid injection system rotating arm can drive the cooling pipeline mechanism to rotate.

[0010] In some embodiments of the present application, the cooling pipeline mechanism further comprises:

[0011] The winding drum device is arranged on the liquid injection system rotating arm; and

[0012] The cooling pipeline is arranged around the winding drum device and connected to the liquid passage. The winding drum device releases the cooling pipeline to extend into the cavity of the part to be processed to inject cooling liquid, so as to cool the cavity of the part to be processed.

[0013] In some embodiments of the present application, the winding drum device comprises:

[0014] The liquid pipe winding drum fixing arm is fixedly arranged on the liquid injection system rotating arm;

[0015] The liquid pipe winding drum rotating shaft is connected to the liquid pipe winding drum fixing arm. The liquid pipe winding drum rotating shaft is internally provided with a cooling liquid cavity. The cooling liquid cavity is connected to the liquid passage and the cooling pipeline; and

[0016] The liquid pipe winding drum is rotatably arranged on the liquid pipe winding drum rotating shaft. The cooling pipeline is wound around the outside of the liquid pipe winding drum.

[0017] In some embodiments of the present application, the winding drum device further comprises:

[0018] The spring hook is arranged at one end of the liquid pipe winding drum fixing arm. When the cooling operation is performed, the spring hook fixes the liquid pipe winding drum fixing arm and the liquid pipe winding drum.

[0019] In some embodiments of the present application, the positioning frame assembly further comprises:

[0020] The two suspending rods are vertically arranged;

[0021] The cross beam has a middle section and two end positioning sections connected to the middle section. The middle section has a hollow disc structure. The positioning sections are fixedly connected to the upper portions of the two suspending rods.

[0022] The fixed base plate is fixedly arranged at the lower portions of the two suspending rods corresponding to the middle section of the cross beam. The part to be processed is fixed on the fixed base plate.

[0023] In some embodiments of the present application, the lifting assembly has a hollow disc structure and is arranged on the two suspending rods and located between the fixed base plate and the middle section of the cross beam.

[0024] In some embodiments of the present application, the cooling pipe mechanism further comprises:

[0025] A circuit control mechanism for receiving a remote control signal to control the winding device to release the cooling pipe into the cavity;

[0026] A transmission mechanism connected to the circuit control mechanism and the winding device for transmitting power from the circuit control mechanism to the winding device.

[0027] In some embodiments of the present application, the circuit control mechanism comprises:

[0028] A remote control receiving module arranged at one end of the rotating arm of the liquid injection system for receiving a remote control signal and issuing a start instruction;

[0029] A PLC controller connected to the remote control receiving module for receiving the start instruction, and the PLC controller controls the start or stop of the stepper motor through a preset program;

[0030] A stepper motor connected to the PLC controller for receiving the control start of the PLC and driving the liquid pipe winding shaft to rotate through the transmission mechanism, and the liquid pipe winding shaft drives the cooling pipe on the liquid pipe winding shaft to wind up or down;

[0031] An electric control valve connected to the external cooling liquid system for controlling the cooling liquid to enter the cooling liquid cavity through the liquid pipe and then enter the cooling pipe to be injected into the inner cavity of the part.

[0032] In some embodiments of the present application, the heat treatment lifting appliance further comprises:

[0033] A furnace following test rod box arranged at the side of the lifting rod, and a furnace following test rod arranged inside the furnace following test rod box for detecting the external environment temperature of the part to be treated.

[0034] In some embodiments of the present application, the cooling pipe mechanism further comprises:

[0035] A counterweight head fixedly arranged at one end of the cooling pipe, and under the joint driving of the counterweight head and the winding device, the cooling pipe extends into the cavity.

[0036] Compared with the prior art, the present application has the following advantages:

[0037] 1) The present application provides a heat treatment special lifting appliance for heating and medium cooling of a conical shaped part;

[0038] 2) The lifting appliance of the present application can not only be reused, but also can accurately fix the furnace following test rod, and is designed with an automatic liquid supply system for automatically injecting cooling liquid into the inner cavity of the part, which ensures that the liquid in the blind hole inner cavity of the part always maintains a circulating cooling state, and finally ensures that the hardness inside and outside the part is consistent;

[0039] 3) The present application replaces the old welding type lifting appliance, and solves the problem that the old one-off lifting appliance for conical shaped parts cannot be used repeatedly, cannot accurately position the furnace test rod, and the inner cavity cooling liquid cannot be circulated, and the cooling effect is poor. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 Structure diagram of the prior art part heat treatment lifting appliance;

[0041] Figure 2 Perspective view of the present application heat treatment lifting appliance;

[0042] Figure 3 Front view of the present application heat treatment lifting appliance;

[0043] Figure 4 Front view of the present application inner cavity automatic cooling liquid injection system;

[0044] Figure 5 Side view of the present application inner cavity automatic cooling liquid injection system;

[0045] Figure 6 Sectional view of the present application inner cavity automatic cooling liquid injection system;

[0046] Figure 7 Front view of the present application heat treatment lifting appliance in heating state;

[0047] Figure 8 Top view of the present application heat treatment lifting appliance in heating state;

[0048] Figure 9 Front view of the present application heat treatment lifting appliance in cooling state.

[0049] The following figures:

[0050] Lifting appliance assembly 100, inner cavity automatic liquid injection system 200, part to be treated 300;

[0051] Cooling pipeline mechanism 20, cooling pipeline 21, drum device 22

[0052] Lifting rod 50, cross beam 51, height adjustment disc 52, fixed base disc 53

[0053] Circuit control mechanism 60, transmission mechanism 61, furnace test rod box 70

[0054] Liquid pipeline 2, liquid injection system rotating arm 4, liquid pipe drum fixing arm 3, liquid pipe drum rotating shaft 12, liquid pipe drum rotating shaft 12, liquid pipe drum 14, spring hook 15, remote control receiving module 10, PLC controller 16, stepping motor 5, electric control valve 6 DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the specific implementation ways of the overall technical solutions of the present application, but not all the implementation ways. Based on the overall concept of the present application, all the other embodiments obtained by those skilled in the art fall within the scope of the present application.

[0056] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0057] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0058] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The present application provides a special lifting device for heat treatment of conical-shaped parts. The lifting device can be reused, and the test rod in the furnace can be accurately fixed. An automatic liquid supply system for automatically injecting cooling liquid into the inner cavity of the part is designed, which ensures that the liquid in the blind hole cavity of the part always maintains a circulating cooling state, and finally ensures that the hardness inside and outside the part is consistent. Instead of the old welding type lifting device, the lifting device solves the problems of the old one-time lifting device for conical-shaped parts, such as inability to reuse, inability to accurately position the test rod in the furnace, and inability to circulate the cooling liquid in the inner cavity, and poor cooling effect.

[0060] The embodiment of the present application provides a heat treatment lifting device for automatic injection of cooling liquid in the inner cavity, as shown in Figure 2 and Figure 3 The heat treatment lifting device for automatic injection of cooling liquid in the inner cavity comprises a lifting device assembly 100 and an inner cavity automatic liquid injection system 200.

[0061] The lifting assembly 100 comprises a lifting adjusting assembly 101 and a positioning frame assembly 102, the lifting adjusting assembly 101 is arranged on the positioning frame assembly 102; and the inner cavity automatic liquid injection system 200 is arranged on the positioning frame assembly 102;

[0062] The inner cavity automatic liquid injection system 200 further comprises an injection system rotating arm 4 and a cooling pipeline mechanism 20, the injection system rotating arm 4 is rotatably arranged on the positioning frame assembly 102, a liquid pipeline 2 is arranged in the injection system rotating arm 4, and the liquid pipeline 2 is connected with an external cooling liquid system to input cooling liquid in a working state; the cooling pipeline mechanism 20 is arranged on the positioning frame assembly 102 and connected with the injection system rotating arm 4, and the injection system rotating arm 4 can drive the cooling pipeline mechanism 20 to rotate.

[0063] The heat treatment lifting assembly further comprises a furnace following test rod box 70 arranged on the side of the lifting rod 50, and the furnace following test rod box 70 is internally provided with furnace following test rods for detecting the external environment temperature of the parts to be treated 300.

[0064] As shown in the figure, Figures 4-6 The cooling pipeline mechanism 20 further comprises a cooling pipeline 21 and a winding drum device 22.

[0065] The winding drum device 22 is arranged on the injection system rotating arm 4, and the cooling pipeline 21 is arranged around the winding drum device 22 and connected with the liquid pipeline 2, the winding drum device 22 releases the cooling pipeline 21 to extend into the cavity of the parts to be treated 300 to inject cooling liquid based on a control signal, so as to cool the inner cavity of the parts to be treated 300.

[0066] The winding drum device 22 comprises a liquid pipeline winding drum fixing arm 3, a liquid pipeline winding drum rotating shaft 12 and a liquid pipeline winding drum 14.

[0067] The liquid pipeline winding drum fixing arm 3 is fixedly arranged on the injection system rotating arm 4, the liquid pipeline winding drum rotating shaft 12 is connected with the liquid pipeline winding drum fixing arm 3, the liquid pipeline winding drum rotating shaft 12 is internally provided with a cooling liquid cavity, the cooling liquid cavity is connected with the liquid pipeline 2 and the cooling pipeline 21, and the liquid pipeline winding drum 14 is rotatably arranged on the liquid pipeline winding drum rotating shaft 12 and used for winding the cooling pipeline 21 outside the liquid pipeline winding drum 14. In the embodiment of the present application, the cooling pipeline 21 is a bendable stainless steel bellows 13, but the present application is not limited to this, and other materials such as plastic hose can also be used.

[0068] The winding drum device 22 further comprises a spring hook 15 arranged at one end of the liquid pipeline winding drum fixing arm 3, and the spring hook 15 fixes the liquid pipeline winding drum fixing arm 3 and the liquid pipeline winding drum 14 during the cooling operation.

[0069] The positioning frame assembly 102 further comprises two vertical hangers 50, a cross beam 51 having a middle section and two positioning sections connecting the two ends of the middle section, the middle section being a hollow disc structure, and the positioning sections being fixedly connected to the upper portions of the two hangers 50; and a fixed base 53 fixedly arranged on the lower portions of the two hangers 50 corresponding to the middle section of the cross beam 51, and the part to be processed 300 being fixed on the fixed base 53.

[0070] The lifting assembly comprises a height-adjusting disc 52, which is a hollow disc structure and is arranged on the two hangers 50 and between the fixed base 53 and the middle section of the cross beam 51.

[0071] The cooling pipe mechanism 20 further comprises a circuit control mechanism 60 and a transmission mechanism 61.

[0072] The circuit control mechanism 60 is configured to receive a remote control signal to control the release of the cooling pipe 21 from the winding device 22 into the cavity; and the transmission mechanism 61 is connected between the circuit control mechanism 60 and the winding device 22, and is configured to transmit power from the circuit control mechanism 60 to the winding device 22.

[0073] The circuit control mechanism 60 comprises a remote control receiving module 10, a PLC controller 16, a stepping motor 5, and an electric control valve 6.

[0074] The remote control receiving module 10 is arranged at one end of the rotating arm 4 of the liquid injection system, and is configured to receive a remote control signal and send a start instruction; the PLC controller 16 is connected to the remote control receiving module 10, and is configured to receive the start instruction; the PLC controller 16 is configured to control the stepping motor 5 to start or stop through a preset program; the stepping motor 5 is connected to the PLC controller 16, and is configured to drive the liquid pipe winding shaft 12 to rotate through the transmission mechanism 61 after being controlled to start by the PLC, and the liquid pipe winding shaft 12 drives the cooling pipe 30 on the liquid pipe winding drum 14 to be wound up or unwound; and the electric control valve 6 is connected to an external cooling liquid system, and is configured to control the cooling liquid to continue to be injected into the inner cavity of the part through the liquid pipe 2 after entering the cooling liquid cavity from the liquid pipe 21.

[0075] As shown in Figure 9 The cooling pipe mechanism 20 further comprises a counterweight head 62 fixedly arranged at one end of the cooling pipe 21, and the cooling pipe 21 is extended into the cavity under the joint driving of the counterweight head 62 and the winding device 22.

[0076] The structure and working principle of the lifting assembly 100 are shown in Figure 3As shown, in use, first slide the height adjustment disc 52 to the highest position of the hanger 50, insert the head of the part 300 into the hole of the fixed base disc 53, then adjust the height adjustment disc 52 to the fixed position of the hanger 50, and put the furnace test rod into the furnace test rod box 70 with a vent hole. The position of the furnace test rod box 70 is welded on the fixed position of the hanger 50 according to the design requirements. The crane hooks the lifting ring 6 to lift the conical part 300 together with the lifting tool and put it into the heat treatment furnace 700 (see Figure 7 and Figure 8 ), and the crossbeam 51 is placed at the mouth of the heat treatment furnace. During the whole heat treatment process, the crossbeam 51 supports the weight of the whole part 300 and the lifting tool itself.

[0077] The structure and working principle of the internal cavity automatic cooling liquid injection system 200 are shown in Figure 4 During the heating process, the cooling liquid injection system rotating arm 4 of the internal cavity automatic cooling liquid injection system rotates around the hanger 100 hanger to be parallel to the hanger crossbeam 51 (see Figure 3 ). At this time, the cooling liquid pipe reel is at 90 degrees to the hanger crossbeam 51, and the part 300 and the hanger 100 can be put into the heating furnace 700 for heating. At this time, the main parts of the internal cavity automatic cooling liquid injection system 200, the stepping motor 5, the electric control valve 6, the remote control receiving module 10 and the cooling liquid pipe reel (see Figure 4 ), are above the heating furnace cover 600 and away from the center of the heating furnace 700, so that these parts can avoid the influence of heat on their performance.

[0078] When the part 300 is heated, it needs to be cooled in the cooling liquid tank. At this time, the heat treatment crane lifts the lifting tool out of the furnace, and before the part enters the cooling liquid tank 400, the cooling liquid injection system rotating arm 4 is rotated to be at 90 degrees to the hanger crossbeam (see Figure 4 , Figure 5 and Figure 9As shown, because the coolant hose reel fixing arm 3 and the coolant injection system rotating arm 4 are always perpendicular, the coolant hose reel 14 is directly above the part, and is fixed by the spring hook 15. After the coolant hose is fixed in the reel, the coolant hose is connected to the coolant pump and the internal automatic coolant injection system through the coolant hose quick-connect coupling 9, and the power cord is connected through the cable socket 8. At this time, turn on the coolant pump and power. When the part is close to the coolant tank and ready to be immersed in the coolant, operate the remote control. After receiving the signal, the remote controller 10 starts the PLC controller 18. The PLC controller 16 first starts the stepper motor 5. The stepper motor 5 drives the coolant tube reel shaft 12 to rotate through the transmission chain 11. The flexible stainless steel corrugated tube 13 begins to extend into the inner cavity of the part under the joint drive of the coolant tube reel shaft 12 and the coolant tube counterweight 62. The PLC controller 16 has a pre-set program. When the flexible stainless steel corrugated tube 13 extends to the set position, the PLC controller 16 stops the stepper motor and starts the electric control valve 6. The coolant is injected into the inner cavity of the part through the coolant tube built into the coolant injection system rotating arm 4 and the coolant tube reel shaft 12, and together with the coolant in the coolant tank outside the part, it cools the part.

[0079] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

[0080] This invention provides a novel reusable heat treatment lifting device that can automatically inject coolant into the inner cavity of a part. It is specifically designed for heat treatment heating and medium cooling of conical parts. However, this invention is not limited to this and can also be used for parts with other shapes, such as cylinders and irregular shapes.

[0081] like Figure 3 As shown, the lifting assembly 100 of the present invention includes a lifting rod 50 and a crossbeam 51 welded together with the lifting rod, a height adjustment disc 52 loosely fitted on the lifting rod 50, a test bar box 70 fixed to the lifting rod 50 and a fixed base 53, a lifting ring 6 welded to the crossbeam 51, and an automatic internal coolant injection system 300 loosely fitted on the lifting rod 50 and freely rotatable. In use, first slide the height adjustment disc 52 to the highest point of the lifting rod 50, insert the part head into the hole of the fixed base 53, then adjust the height adjustment disc 52 to the fixed position on the lifting rod 50, and place the test bar into the test bar box 70 with a vent hole. The position of the test bar box 70 is welded to the fixed position of the lifting rod 50 according to design requirements. The crane hooks the lifting ring and lifts the conical part 300 together with the lifting assembly and places it into the heat treatment furnace 700 (see...). Figure 7), the crossbeam 51 is just placed to the mouth of the heat treatment furnace, and the crossbeam 51 plays a role of supporting the whole part 300 and the weight of the lifting appliance itself during the whole heat treatment process. When entering the cooling liquid tank, the lifting ring 6 plays a role of supporting the whole part 300 and the weight of the lifting appliance itself.

[0082] The structure and working principle of the inner cavity automatic cooling liquid injection system are shown in Figure 4 During the heating process of the part, the cooling liquid injection system rotating arm 4 of the inner cavity automatic cooling liquid injection system 200 rotates around the lifting rod of the lifting appliance 100 to be parallel to the lifting appliance crossbeam 51 (see Figure 7 ), at this time, the cooling liquid pipe reel is 90 degrees to the lifting appliance crossbeam 51, and the part 300 and the lifting appliance 100 can be put into the heating furnace 700 for heating, at this time, the main parts of the inner cavity automatic cooling liquid injection system 200, the stepping motor 5, the electric control valve 6, the remote control receiving module 10 and the cooling liquid pipe reel are all above the heating furnace insulation cover 600 and far away from the center of the heating furnace 700 (see Figure 7 and Figure 8 ), and all the parts of the inner cavity automatic cooling liquid injection system are made of stainless steel, heat-resistant steel and other materials, and the motor and the cable are treated by reliable insulation and heat insulation, so that the performance of these components can be avoided from being affected by heat.

[0083] When the part is heated, it needs to be cooled in the cooling liquid tank 400, at this time, the heat treatment crane lifts the lifting appliance out of the furnace, and before the part enters the cooling liquid tank 400, the cooling liquid injection system rotating arm 4 is rotated to be 90 degrees to the lifting appliance crossbeam (see Figure 1 ), because the cooling liquid pipe reel fixing arm 3 is always perpendicular to the cooling liquid injection system rotating arm 4, at this time, the cooling liquid pipe reel 14 is just above the part (see Figure 9 ), and the cooling liquid pipe reel fixing arm 3 and the cooling liquid pipe reel 14 are fixed by the spring hook 15. Because the temperature of the part at this time is thousands of degrees Celsius, and it is in the cooling liquid tank 400, it is difficult for personnel to approach, so the system uses a remote control and PLC programming control to control the inner cavity automatic cooling liquid injection system. After the cooling liquid pipe reel is fixed, the cooling liquid pipe is connected to the inner cavity automatic cooling liquid injection system through the cooling liquid pipe quick-change connector 9, and the power line is connected through the cable socket 8. At this time, the cooling liquid pump and the power supply are turned on, and when the part approaches the cooling liquid tank and is ready to be immersed in the cooling liquid, the operator starts the remote control, the remote control receiving module 10 receives the signal, and the PLC controller 16 is started. The PLC controller 16 first starts the stepping motor 5, and the stepping motor drives the cooling liquid pipe reel rotating shaft 12 through the transmission chain 11 to rotate, and the flexible stainless steel bellows 13 are rotated around the cooling liquid pipe reel rotating shaft 12 and the stainless steel bellows counterweight head 62 (see Figure 4 , Figure 5 , Figure 6 and Figure 9Under the common drive of the flexible stainless steel bellows 13, the cooling liquid starts to extend into the cavity of the part. The PLC controller 16 is preprogrammed, and when the flexible stainless steel bellows 13 extends to the set position, the PLC controller 16 stops the stepping motor and starts the electric control valve 6. The cooling liquid passes through the cooling pipe 2 in the rotating arm 4 of the cooling liquid injection system and the cooling pipe winding drum shaft 12, and is injected into the cavity of the part through the flexible stainless steel bellows 13, and is cooled together with the cooling liquid in the cooling liquid pool outside the part.

[0084] The embodiment of the present application also provides a heat treatment method for automatic cavity cooling liquid injection, which adopts the heat treatment hanger for automatic cavity cooling liquid injection as described above, and is used for cooling a part to be treated having a cavity blind hole, and comprises the following steps:

[0085] Step one: fixing and arranging the part to be treated 300 on the hanger assembly 100;

[0086] Step two: when the part to be treated needs to be cooled, the rotating arm 4 of the liquid injection system rotates to drive the cooling pipe mechanism 20 to rotate to the corresponding position above the cavity of the part to be treated 300, and the winding drum device 40 releases the cooling pipe 30 to extend into the cavity to inject the cooling liquid, so as to realize the cooling of the cavity of the part to be treated 300.

[0087] Compared with the prior art, the present application has the advantages of simple structure, reliable action, good adaptability to the special shape of the conical part, the fixing requirement of the test rod in the furnace, and the automatic cavity cooling liquid injection of the part, and ensures the consistency of the internal and external hardness of the part in heat treatment.

[0088] The above description is a specific embodiment of the present application, which aims to enable the skilled person to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent replacement or change according to the technical scheme and the inventive concept of the present application should be covered in the protection scope of the present application. It should be noted that the implementation methods not drawn or described in the drawings or the text are known to the skilled person in the art, and are not described in detail. In addition, the definitions of the components and process methods described above are not limited to the specific structures, shapes or ways mentioned in the embodiment.

Claims

1. A heat treatment hanger for automatically injecting coolant into an internal cavity, characterized in that, include: A lifting device assembly, the lifting device assembly including a lifting adjustment assembly and a positioning frame assembly, the lifting adjustment assembly being disposed on the positioning frame assembly; and An automatic internal fluid injection system is mounted on the positioning frame assembly, and the automatic internal fluid injection system further includes: The liquid injection system rotating arm is rotatably mounted on the positioning frame assembly. A liquid passage is provided inside the liquid injection system rotating arm. When the liquid passage is in working condition, it is connected to an external coolant system to input coolant. A cooling pipe mechanism is mounted on the positioning frame assembly and connected to the liquid injection system rotating arm, which can drive the cooling pipe mechanism to rotate.

2. The heat treatment hanger for automatic internal coolant injection according to claim 1, characterized in that, The cooling piping system further includes: The reel device is mounted on the rotating arm of the injection system; and A cooling pipe is wound around the reel device and connected to the liquid flow pipe. The reel device releases the cooling pipe based on a control signal to inject the coolant into the cavity of the part to be processed, thereby cooling the cavity of the part to be processed.

3. The heat treatment hanger for automatic internal coolant injection according to claim 2, characterized in that, The winding device includes: A liquid tube reel fixing arm is fixedly mounted on the rotating arm of the liquid injection system; A liquid hose reel shaft is connected to the liquid hose reel fixing arm. The liquid hose reel shaft has a coolant cavity inside, which connects to the liquid supply pipe and the cooling pipe. A liquid pipe reel is rotatably mounted on the liquid pipe reel shaft and is used to wind the cooling pipe around the outside of the liquid pipe reel.

4. The heat treatment hanger for automatic internal coolant injection according to claim 3, characterized in that, The reel assembly further includes: A spring hook is provided at one end of the liquid pipe reel fixing arm. During cooling operations, the spring hook fixes the liquid pipe reel fixing arm and the liquid pipe reel.

5. The heat treatment hanger for automatic internal coolant injection according to claim 2, characterized in that, The positioning frame assembly further includes: Two booms, erected vertically; The crossbeam has a middle section and two positioning sections connecting the middle section. The middle section has a hollow disc-shaped structure, and the positioning sections are fixedly connected to the upper part of the two suspension rods. A fixed chassis is fixedly installed at the lower part of the two suspension rods, corresponding to the middle section of the crossbeam, and the part to be processed is fixed to the fixed chassis.

6. The heat treatment hanger for automatic internal coolant injection according to claim 5, characterized in that, The lifting and adjusting assembly is a hollow disc-shaped structure, which is installed on the two suspension rods and located between the fixed chassis and the middle section of the crossbeam.

7. The heat treatment hanger for automatic internal coolant injection according to claim 3, characterized in that, The cooling piping system further includes: A circuit control mechanism is used to receive remote control signals to control the drum device to release the cooling pipe into the cavity; A transmission mechanism connects the circuit control mechanism and the drum device, and is used to transmit the power of the circuit control mechanism to the drum device.

8. The heat treatment hanger for automatic internal coolant injection according to claim 7, characterized in that, The circuit control mechanism includes: A remote control receiving module is located at one end of the rotating arm of the injection system, used to receive control signals from a remote location and issue start commands; A PLC controller is connected to the remote control receiving module to receive the start command. The PLC controller controls the stepper motor to start or stop through a preset program. A stepper motor, connected to the PLC controller, is used to receive control from the PLC and, after starting, drive the liquid tube reel shaft to rotate through the transmission mechanism. The liquid tube reel shaft drives the cooling tube on the liquid tube reel to be wound up or unwound. An electrically controlled valve, connected to the external coolant system, is used to control the coolant to enter the coolant cavity through the liquid passage and then continue to enter the cooling passage to be injected into the inner cavity of the part.

9. The heat treatment hanger for automatic internal coolant injection according to claim 5, characterized in that, The heat treatment lifting fixture also includes: A furnace test bar box is installed on the side of the lifting rod. The furnace test bar box contains a furnace test bar for detecting the external ambient temperature of the part to be processed.

10. The heat treatment hanger for automatic internal coolant injection according to claim 7, characterized in that, The cooling piping system further includes: A counterweight head is fixedly installed at one end of the cooling pipe. Under the combined drive of the counterweight head and the drum device, the cooling pipe extends into the cavity.

Images