CN116479225A - Cooling device for heat treatment of spheroidal graphite cast iron gear box - Google Patents
Cooling device for heat treatment of spheroidal graphite cast iron gear box Download PDFInfo
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- CN116479225A CN116479225A CN202310663386.3A CN202310663386A CN116479225A CN 116479225 A CN116479225 A CN 116479225A CN 202310663386 A CN202310663386 A CN 202310663386A CN 116479225 A CN116479225 A CN 116479225A
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- inner container
- gear box
- cooling box
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- 238000001816 cooling Methods 0.000 title claims abstract description 127
- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- 238000010791 quenching Methods 0.000 claims abstract description 106
- 230000000171 quenching effect Effects 0.000 claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 55
- 238000012423 maintenance Methods 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 description 15
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 229920001875 Ebonite Polymers 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000036544 posture Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a cooling device for heat treatment of a spheroidal graphite cast iron gear box, which comprises a cooling box and a box cover sealed with an opening at the top of the cooling box; the cooling box is provided with a main liquid inlet pipe, the top surface of the box cover is provided with a discharge pipe, and the discharge pipe is communicated with a sealing cavity formed by the box cover and the cooling box; the cooling box is internally embedded with a hollow-out structure inner container, and an exhaust assembly for maintaining the quenching workpiece at the middle part of the inner side of the inner container and in a rolling state is arranged in the cooling box. According to the quenching medium quenching device, the state of the gear box is changed in a quenching state, and the sprayed quenching medium acts on the gear box positioned in the inner container by utilizing the exhaust component, so that the gear box is suspended in the inner container and continuously overturns, residual air in the gear box is quickly discharged, the inner wall of the gear box can be in timely full contact with the quenching medium, and further, the balanced cooling is realized, and internal cracks or local deformation caused by too slow local cooling are avoided.
Description
Technical Field
The invention relates to the technical field of heat treatment devices, in particular to a cooling device for heat treatment of a spheroidal graphite cast iron gear box.
Background
Ductile iron is a cast iron material with high strength and high toughness, and is widely used in mechanical equipment such as gearboxes due to its good workability and corrosion resistance. Heat treatment is a very important process in the manufacture of spheroidal graphite cast iron gearboxes. The aim is to obtain the required properties and characteristics by controlling the heat treatment process of the material so as to achieve the expected service life and mechanical properties.
The annealing process does not require rapid cooling, but the quenching after the annealing is completed is to enhance the hardness, toughness and wear resistance of the cast iron, and the process requires rapid cooling of the material below room temperature to form a finer martensitic structure, so that the spheroidal graphite cast iron material has higher hardness and strength. Common quenching media are brine, water, mineral oil, and air.
In contrast, the quenching treatment of the spheroidal graphite cast iron gear box is relatively complex, mainly in that the internal structure of the gear box is complex, when the gear box is immersed in a quenching medium, the complex structure in the gear box is extremely easy to cause air residues, an air cavity is formed in the gear box, the condition of inconsistent temperature change occurs on the inner wall and other parts of the cavity area, internal cracks or local deformation are caused by inconsistent temperature change for a long time, and although thermal stress and residual austenite caused by quenching can be eliminated in the subsequent tempering and annealing procedures, the complexity of the subsequent production of the gear box is generally increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a cooling device for heat treatment of a spheroidal graphite cast iron gear box, which comprises the following specific technical scheme:
a cooling device for heat treatment of a spheroidal graphite cast iron gearbox, comprising:
a cooling box and a box cover sealed with an opening at the top of the cooling box;
the cooling box is provided with a main liquid inlet pipe, the top surface of the box cover is provided with a discharge pipe, and the discharge pipe is communicated with a sealing cavity formed by the box cover and the cooling box;
the cooling box is internally embedded with a hollow-out structure inner container, and an exhaust assembly for maintaining the quenching workpiece to be positioned in the middle of the inner side of the inner container and in a rolling state is arranged in the cooling box.
The conventional quenching process is to put the gear box in a high temperature state into the cooling box, submerge the gear box through the quenching medium, cool the gear box, and the gear box which is stationary is difficult to empty the air in the gear box due to the internal structure, so that the residual air after submerging in the quenching medium is accumulated in the gear box to form an air cavity, and the gear box wall body of the part cannot be directly contacted with the quenching medium, so that the local cooling is too slow, and internal cracks or local deformation are generated.
The scheme is that the state of the gear box is changed in a quenching state, so that air is discharged under the condition of full quenching. Specifically, the main liquid inlet pipe is used for continuously feeding the quenching medium into the cooling box, and after the cooling box is filled, the feeding of the quenching medium is stopped, so that the quenching medium can be used for quenching treatment of the gear box. And (3) sending the gearbox in the high-temperature state into the cooling box, immediately covering the box cover, and continuously sending the quenching medium into the main liquid inlet pipe until the quenching treatment is completed at the moment, wherein the box cover is covered to enable the cooling box and the box cover to form a sealed cavity, and in the state, the quenching medium absorbing heat can only be discharged through the discharge pipe, so that the flowing cooling of the quenching medium is realized.
Meanwhile, the quenching medium continuously fed by the main liquid inlet pipe is sprayed out through the exhaust component, and the sprayed quenching medium acts on the gear box positioned in the inner container, so that the gear box is suspended in the inner container and continuously overturns, residual air in the gear box is rapidly discharged, the inner wall of the gear box can be in timely full contact with the quenching medium, and further, balanced cooling is realized.
As an improvement of the technical scheme, the inner container is of a barrel-shaped structure with an opening at the top, and upper overflow openings are uniformly distributed at the edge of the opening of the inner container matched with the inner wall of the cooling box;
the side wall of the inner container is uniformly provided with upper notches;
a through hole is formed in the middle of the bottom surface of the inner container, and a lower notch with an arc-shaped structure is annularly formed around the through hole;
the bottom end of the inner container is provided with a supporting plate fixedly connected with the inner wall of the cooling box, and lower overflow ports are uniformly distributed on the supporting plate.
The setting of inner bag is in order to avoid the gear box upset in-process to take place the touching with the inner wall of cooling box, the protection the inner wall of cooling box is not damaged. Preferably, the material of the inner container is hard rubber.
Meanwhile, the supporting plate is used for fixing the inner container and the cooling box, so that the inner container is prevented from being displaced in the cooling box, and the sprayed quenching medium path is further influenced. The upper overflow port and the lower overflow port are used for ensuring that the quenching medium can smoothly pass through between the inner container and the cooling box, and the high-temperature quenching medium which can not gather and absorb heat can not influence the cooling linearity.
The upper notch, the through hole and the lower notch are used for spraying cooling medium into the inner container to act on the gear box, so that the cooling medium is suspended and continuously overturned. In addition, the arrangement of the upper notch, the through hole and the lower notch also avoids damage to the exhaust assembly caused by the overturned gear.
As an improvement of the above technical solution, the exhaust assembly includes:
a maintenance assembly and a tumbling assembly;
the maintaining assembly is used for suspending the quenching workpiece in the middle of the liner;
the rolling assembly is used for providing driving force for continuously overturning the quenched workpiece.
The exhaust assembly comprises two parts, a maintenance assembly used for suspending the gear box in the middle of the inner container, and the rolling assembly used for providing driving force for continuous overturning of the gear box. The overturning and the suspension of the gear box are respectively controlled by the two components, so that the automatic control device can be suitable for accurate control of gear boxes with different sizes.
As an improvement of the above technical solution, the maintenance assembly includes:
the maintenance spray heads are all positioned on the inner wall of the cooling box, a plurality of maintenance spray heads which are longitudinally arranged form a group, and a plurality of groups of maintenance spray heads are annularly and uniformly distributed along the inner wall of the cooling box;
the liquid inlet ends of the maintaining spray heads are communicated with the annular diversion grooves formed in the inner wall of the cooling box, and the liquid outlet ends of the maintaining spray heads which are positioned in the same group correspond to the positions of the upper notch so as to send the sprayed quenching medium into the inner container.
The maintenance spray heads are distributed on the inner wall of the cooling box, and the sprayed quenching medium acts on the gear box through the upper notch, so that the suspended gear box is always kept at a distance from the inner wall of the inner container, and collision between the suspended gear box and the inner container and the inner wall of the cooling box is avoided.
The annular flow dividing grooves are arranged to uniformly convey the quenching medium to the maintaining spray heads, so that the quenching medium sprayed by each maintaining spray head and even each group of maintaining spray heads is ensured to have approximately the same force acting on the gear box, and the gear box is always positioned in the inner container.
As an improvement of the foregoing technical solution, the maintenance assembly further includes:
the pushing spray head is vertically arranged on the inner bottom surface of the cooling box and sends the sprayed quenching medium into the inner container through the through hole.
In addition, in order to enable the height position of the gear box suspended in the inner container to be accurately controlled, a pushing spray head is vertically arranged on the inner bottom surface of the cooling box, the quenching medium sprayed out by the pushing spray head acts on the bottom of the gear box, an upward force is applied to the gear box, and the gear box is stably suspended in the quenching medium in the inner container in cooperation with the acting force of the quenching medium sprayed out by the maintaining spray head on the gear box.
As an improvement of the above technical solution, the rolling assembly includes:
the overturning spray heads are arranged on the inner bottom surface of the cooling box and distributed annularly around the through holes, the overturning spray heads are obliquely arranged, and the sprayed quenching medium passes through the corresponding lower notch and is intersected in the middle of the inner container.
The quenching medium sprayed out of the turnover spray head applies centrifugal acting force to the gear box, so that the gear box turns under a suspension state. Therefore, the overturning spray head adopts an inclined arrangement mode to spray quenching medium, so that acting force of the quenching medium breaks the suspension state of the gear box and promotes the quenching medium to overturn. For better control gear box's upset speed and gesture, so the upset shower nozzle sets up a plurality ofly to the upset shower nozzle is around the hole and is annular distribution, can be favorable to the unified adjustment of upset shower nozzle inclination.
As an improvement of the technical scheme, the inclination angle of the overturning spray head is adjustable.
Because the size, the weight and the structural parameters of the gear box are different, the different differences can lead the quenching medium sprayed out of the turnover spray head to act on the gear box to ensure that the turnover speed and the turnover gesture are different, so the tilting angle of the turnover spray head is adjusted to change the force of the sprayed quenching medium acting on the gear box, the turnover speed and the turnover gesture of the gear box are controllable, and the efficiency of discharging the residual air is realized.
As an improvement of the technical scheme, one side of the box cover is connected with the cooling box, the other side of the box cover is opened or closed through the fixing lock and the cooling box, and the circumferential side wall of the box cover corresponding to the fixing lock is provided with a handle for assisting in opening or closing the box cover.
When the box cover is hinged with the cooling box, the box cover can be opened or closed more conveniently and easily by the handle. The fixing lock can keep the cover state of the box cover when the cooling box is covered with the box cover, and the box cover cannot be propped open by quenching medium.
As an improvement of the technical scheme, the bottom surface of the box cover is provided with a protective filter cover, and the liquid inlet end of the discharge pipe extends into the protective filter cover;
when the box cover and the cooling box cover are connected, the protective filter cover extends into the opening at the upper part of the liner.
On one hand, the turnover gearbox is used for avoiding damage to the bottom surface of the box cover and liquid leakage; on the other hand, the discharge pipe extending into the cooling box is protected, so that the discharge pipe is prevented from being collided by the overturned gear box, and the discharge pipe influences the overturned gear box. Preferably, the material of the protective filter cover is hard rubber.
As an improvement of the above technical solution, the main liquid inlet pipe includes an upper liquid inlet branch pipe and a lower liquid inlet branch pipe, the upper liquid inlet branch pipe is used for feeding the maintenance assembly, and the lower liquid inlet branch pipe is used for feeding the rolling assembly.
The main liquid inlet pipe is split by the upper liquid inlet branch pipe and the lower liquid inlet branch pipe, so that quenching medium is respectively conveyed to the maintaining component and the rolling component, and the quenching medium is used for realizing regulation and control of different suspension forces, turning speeds and postures.
The invention has the beneficial effects that:
1. through the state of the gear box under the change quenching state, utilize exhaust assembly to act on the gear box that is located the inner bag with the quenching medium of blowout for the gear box is suspended in the inner bag, and continuously overturns, so that the residual air in the gear box is discharged fast, makes the inner wall of gear box can be timely fully contacted with the quenching medium, and then realizes balanced cooling, thereby avoids the local cooling too slowly, leads to inside crackle or local deformation to take place.
2. The quenching medium in the sealed cavity continuously flows through the sealed cavity formed by the box cover and the cooling box to ensure the quenching linearity and the adjustability of the exhaust assembly, so that the device is suitable for quenching treatment of gear boxes with various sizes and sizes. In addition, the pressurization mode of the sealing cavity is adopted to help accelerate the discharge of residual air.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a top view of the overall structure of the present invention;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is a side view of the overall structure of the present invention;
FIG. 5 is a cross-sectional view at B-B in FIG. 4;
fig. 6 is a cross-sectional view at C-C in fig. 4.
Reference numerals: 100. a cooling box; 110. a main liquid inlet pipe; 111. an upper liquid inlet branch pipe; 112. a lower liquid inlet branch pipe; 200. a case cover; 210. a discharge pipe; 220. a fixed lock; 230. a handle; 240. a protective filter cover; 300. an inner container; 310. an upper overflow port; 320. an upper notch; 330. a via hole; 340. a lower notch; 350. a supporting plate; 360. a lower overflow port; 400. an exhaust assembly; 410. a maintenance assembly; 411. maintaining the spray head; 412. an annular shunt channel; 413. pushing the spray head; 420. a tumbling assembly; 421. and (5) turning the spray head.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-6, fig. 1 is a perspective view of the overall structure of the present invention; FIG. 2 is a top view of the overall structure of the present invention; FIG. 3 is a cross-sectional view at A-A in FIG. 2; FIG. 4 is a side view of the overall structure of the present invention; FIG. 5 is a cross-sectional view at B-B in FIG. 4; fig. 6 is a cross-sectional view at C-C in fig. 4.
In the conventional quenching process, the gear box in a high temperature state is placed in the cooling box 100, the gear box is immersed by the quenching medium and cooled, and the gear box which is stationary is difficult to empty the air in the gear box due to the internal structure, so that the residual air after immersing in the quenching medium is accumulated in the gear box to form an air chamber, and the gear box wall body of the part cannot be directly contacted with the quenching medium, so that the partial cooling is too slow, and internal cracks or partial deformation are generated.
In order to solve the above technical problems, a cooling device for heat treatment of a spheroidal graphite cast iron gear box is provided, comprising:
the cooling box 100 and the box cover 200 sealed with the top opening of the cooling box 100;
the cooling box 100 is provided with a main liquid inlet pipe 110, the top surface of the box cover 200 is provided with a discharge pipe 210, and the discharge pipe 210 is communicated with the main liquid inlet pipe 110 through a sealed cavity formed by the box cover 200 and the cooling box 100;
wherein, the cooling box 100 is internally embedded with a hollow-out inner container 300, and the cooling box 100 is internally provided with an exhaust assembly 400 for maintaining quenching workpieces at the middle part of the inner side of the inner container 300 and in a rolling state.
By changing the state of the gear box in the quenched state, air is discharged under the condition of sufficient quenching. Specifically, the main liquid inlet pipe 110 is used for continuously feeding the quenching medium into the cooling tank 100, and stopping feeding the quenching medium after filling the cooling tank 100, so that the quenching medium can be used for quenching treatment of the gear box. The gearbox in a high temperature state is fed into the cooling box 100, the box cover 200 is immediately covered, at this time, the main liquid inlet pipe 110 starts to continuously feed the quenching medium until the quenching treatment is completed, and the cooling box 100 and the box cover 200 form a sealed cavity due to the cover 200 being covered, in this state, the quenching medium absorbing heat can only be discharged through the discharge pipe 210, thereby realizing the flow cooling of the quenching medium.
Meanwhile, the quenching medium continuously fed into the main liquid inlet pipe 110 is sprayed out through the exhaust assembly 400, and the sprayed quenching medium acts on the gear box positioned in the inner container 300, so that the gear box is suspended in the inner container 300 and continuously overturns, so that residual air in the gear box is rapidly discharged, the inner wall of the gear box can be in timely full contact with the quenching medium, and further, the balanced cooling is realized.
Referring to fig. 3, in one embodiment, in order to further efficiently and rapidly discharge the residual air inside the gear box, a relief valve a is provided on the blast discharge pipe 210, and the pressure of the discharged quenching medium is set through the relief valve a, thereby increasing the pressure inside the cooling tank 100, and increasing the discharge efficiency of the residual air by increasing the hydraulic pressure.
Furthermore, a support leg b is provided at the bottom of the cooling tank 100 for elevating the cooling tank 100 for the connection arrangement of the main inlet pipe 110.
Referring to fig. 3, 5 and 6, in one embodiment, the liner 300 has a barrel-shaped structure with an open top, and upper overflow ports 310 are uniformly distributed at the edge of the opening of the liner 300, which is matched with the inner wall of the cooling box 100;
the side wall of the inner container 300 is uniformly distributed with upper notches 320;
the middle part of the bottom surface of the liner 300 is provided with a via hole 330, and a lower notch 340 with an arc-shaped structure is annularly arranged around the via hole 330;
the bottom end of the inner container 300 is provided with a supporting plate 350 fixedly connected with the inner wall of the cooling box 100, and lower overflow ports 360 are uniformly distributed on the supporting plate 350.
The inner container 300 is provided to prevent the inner wall of the cooling box 100 from being damaged by touching the inner wall of the cooling box 100 during the overturning process of the gear box. Preferably, the material of the inner container 300 is hard rubber. When the cast iron gear box collides with the inner container 300, the inner container 300 is not damaged, the hard rubber does not damage the cast iron gear box, and the shape of the cast iron gear box can be kept stable.
Meanwhile, the supporting plate 350 is used for fixing the liner 300 and the cooling box 100, so that the liner 300 is prevented from being displaced in the cooling box 100, and the sprayed quenching medium path is further prevented from being influenced. The upper overflow port 310 and the lower overflow port 360 are used for ensuring that the quenching medium between the liner 300 and the cooling tank 100 can smoothly pass through without the high-temperature quenching medium which gathers and absorbs heat to influence the cooling linearity.
The upper notch 320, the through hole 330 and the lower notch 340 are used for spraying cooling medium into the inner container 300 to act on the gear box, so that the cooling medium is suspended and continuously overturned. In addition, the arrangement of the upper notch 320, the via 330, and the lower notch 340 also avoids damage to the exhaust assembly 400 caused by the flipped gears.
With continued reference to FIG. 3, in one embodiment, the exhaust assembly 400 includes:
a maintenance assembly 410 and a tumbling assembly 420;
wherein, the maintaining component 410 is used for suspending the quenching workpiece in the middle of the liner 300;
the tumbling assembly 420 is used to provide a driving force for the continued tumbling of the quenched workpiece.
The exhaust assembly 400 includes a maintenance assembly 410 for suspending the gear case in the middle of the inner container 300, and a tumbling assembly 420 for providing a driving force for the continuous overturning of the gear case. The overturning and the suspension of the gear box are respectively controlled by the two components, so that the automatic control device can be suitable for accurate control of gear boxes with different sizes.
With continued reference to fig. 3, in one embodiment, the maintenance component 410 includes:
the maintenance spray heads 411, the maintenance spray heads 411 are all positioned on the inner wall of the cooling box 100, a plurality of maintenance spray heads 411 which are longitudinally arranged form a group, and a plurality of groups of maintenance spray heads are annularly and uniformly distributed along the inner wall of the cooling box 100;
the liquid inlet ends of the maintaining spray heads 411 are communicated with annular diversion grooves 412 formed in the inner wall of the cooling box 100, and the liquid outlet ends of the maintaining spray heads 411 in the same group correspond to the positions of the upper notch 320 so as to send the sprayed quenching medium into the inner container 300.
Wherein, the spray nozzles 411 are maintained to be distributed on the inner wall of the cooling box 100, and the sprayed quenching medium acts on the gear box through the upper notch 320, so that the suspended gear box always keeps a distance from the inner wall of the inner container 300, and collision between the suspended gear box and the inner container 300 and the inner wall of the cooling box 100 is avoided.
The annular diversion channel 412 is provided to uniformly feed the quenching medium to the maintenance heads 411, and to ensure that the forces of the quenching medium ejected from each maintenance head 411 and each group of maintenance heads 411 acting on the gear case are substantially the same, so that the gear case is always located in the inner container 300.
Preferably, there are 4 or more sustain jets 411 per set, and there are no fewer than 6 sets, each set being equally spaced.
With continued reference to fig. 3, in one embodiment, the maintenance component 410 further comprises:
the pushing spray head 413, the pushing spray head 413 is vertically arranged on the inner bottom surface of the cooling box 100, and the sprayed quenching medium is sent into the inner container 300 through the hole 330.
In addition, in order to precisely control the height position of the gear box suspended in the inner container 300, a pushing nozzle 413 is vertically disposed on the inner bottom surface of the cooling tank 100, and the quenching medium sprayed by the pushing nozzle 413 acts on the bottom of the gear box to apply an upward force to the gear box, and cooperates with the maintaining nozzle 411 to spray the quenching medium to apply the acting force on the gear box, so that the gear box is stably suspended in the quenching medium in the inner container 300.
In this embodiment, the pushing nozzle 413 and the rolling assembly 420 are both located at the bottom of the inner side of the cooling tank 100 and are located closer to each other, so that the pushing nozzle 413 and the rolling assembly 420 share a common pipeline for conveying quenching medium for simplifying the pipeline layout.
With continued reference to fig. 3 and 6, in one embodiment, the tumble assembly 420 includes:
the overturning spray heads 421 are arranged on the inner bottom surface of the cooling box 100 and distributed annularly around the holes 330, the overturning spray heads 421 are arranged obliquely, and the sprayed quenching medium passes through the corresponding lower notch 340 to be intersected in the middle of the inner container 300.
The quenching medium sprayed from the overturning nozzle 421 applies centrifugal force to the gear box, so that the gear box is overturned in a suspension state. Therefore, the overturning spray heads 421 spray the quenching medium in an inclined mode, so that acting force of the quenching medium breaks the suspension state of the gearbox and causes the quenching medium to overturn. For better control of the overturning speed and the overturning posture of the gearbox, a plurality of overturning spray heads 421 are arranged, and the overturning spray heads 421 are distributed annularly around the holes 330, so that unified adjustment of the inclination angle of the overturning spray heads 421 can be facilitated.
With continued reference to fig. 3 and 6, in one embodiment, the tilt angle of the flip head 421 is adjustable.
Because the size, the weight and the structural parameters of the gear box are different, the different differences can lead the quenching medium sprayed out by the turnover spray nozzle 421 to act on the gear box to ensure that the turnover speed and the turnover gesture are different, so the tilting angle of the turnover spray nozzle 421 is adjusted to change the force of the sprayed quenching medium acting on the gear box, the turnover speed and the turnover gesture of the gear box are controllable, and the efficiency of discharging the residual air is realized.
With continued reference to fig. 3 and 5, in one embodiment, the cover 200 interfaces with the cooling box 100 on one side and is opened or closed with the cooling box 100 on the other side by a securing lock 220, and the cover 200 has a handle 230 on a circumferential side wall corresponding to the securing lock 220 to assist in opening or closing the cover 200.
When the cover 200 is hinged with the cooling box 100, the cover 200 can be opened or closed by turning the cover more conveniently and easily by the handle 230. The fixing lock 220 is provided to maintain the lid state of the lid 200 against being pushed open by the quenching medium when the cooling box 100 is closed with the lid 200.
In addition, the mating surfaces of the case cover 200 and the cooling case 100 are in a stepped transition structure so as to improve sealability.
With continued reference to fig. 3 and 5, in one embodiment, the bottom surface of the lid 200 has a protective filter housing 240, and the liquid inlet end of the discharge tube 210 extends into the protective filter housing 240;
when the cover 200 is closed with the cooling box 100, the protection filter 240 is extended into the upper opening of the inner container 300.
On one hand, the turnover gearbox is used for avoiding damage to the bottom surface of the box cover 200 and liquid leakage; on the other hand, the discharge pipe 210 extending into the cooling tank 100 is protected from the collision of the gear box with the discharge pipe 210 being turned upside down, and the discharge pipe 210 affects the turning of the gear box. Preferably, the material of the protective filter cover 240 is hard rubber.
With continued reference to fig. 3 and 5, in one embodiment, the main feed leg 110 includes an upper feed leg 111 and a lower feed leg 112, the upper feed leg 111 being configured to feed the maintenance assembly 410 and the lower feed leg 112 being configured to feed the tumble assembly 420.
The main liquid inlet pipe 110 is branched by the upper liquid inlet branch pipe 111 and the lower liquid inlet branch pipe 112, so that quenching medium is respectively conveyed to the maintaining component 410 and the rolling component 420, and the control of different suspension forces, turning speeds and postures is realized.
In one embodiment, the upper feed leg 111 is used to provide quench medium to the annular bypass channel 412 and the quench medium is ultimately ejected from the maintenance spray 411. The tumbling assembly 420 serves to supply quenching medium to the pushing nozzle 413 and the tilting nozzle 421 disposed at the inner bottom of the cooling tank 100, preferably having a lower diverting chamber c at the bottom of the cooling tank 100, and the pushing nozzle 413 and the tilting nozzle 421 communicate with the lower feed manifold 112 through the lower diverting chamber c.
In one embodiment, to increase the internal pressure of the cooling tank 100 and to avoid the reverse flow of the quenching medium, a check valve d is provided on the lower feed leg 112 for pressurizing and avoiding the reverse flow.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox, comprising:
a cooling box (100) and a box cover (200) sealed with an opening at the top of the cooling box (100);
the cooling box (100) is provided with a main liquid inlet pipe (110), the top surface of the box cover (200) is provided with a discharge pipe (210), and the discharge pipe (210) is communicated with the main liquid inlet pipe (110) through a sealed cavity formed by the box cover (200) and the cooling box (100);
the cooling box (100) is internally embedded with a hollow-out inner container (300), and an exhaust assembly (400) for maintaining quenching workpieces to be located in the middle of the inner side of the inner container (300) and in a rolling state is arranged in the cooling box (100).
2. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 1, wherein:
the inner container (300) is of a barrel-shaped structure with an opening at the top, and upper overflow ports (310) are uniformly distributed at the edge of the opening of the inner container (300) matched with the inner wall of the cooling box (100);
the side wall of the inner container (300) is uniformly provided with upper notches (320);
a through hole (330) is formed in the middle of the bottom surface of the inner container (300), and a lower notch (340) with an arc-shaped structure is formed around the through hole (330) in a ring shape;
the bottom end of the inner container (300) is provided with a supporting plate (350) fixedly connected with the inner wall of the cooling box (100), and lower overflow ports (360) are uniformly distributed on the supporting plate (350).
3. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 2, characterized in that:
the exhaust assembly (400) includes:
a maintenance assembly (410) and a tumbling assembly (420);
wherein the maintaining component (410) is used for suspending the quenching workpiece in the middle of the liner (300);
the tumbling assembly (420) is used for providing driving force for continuous overturning of the quenched workpiece.
4. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 3, wherein:
the maintenance assembly (410) includes:
the maintenance spray heads (411), the maintenance spray heads (411) are all positioned on the inner wall of the cooling box (100), a group of a plurality of maintenance spray heads (411) which are longitudinally arranged are formed, and a plurality of groups of maintenance spray heads are annularly and uniformly distributed along the inner wall of the cooling box (100);
the liquid inlet ends of the maintaining spray heads (411) are communicated with annular flow dividing grooves (412) formed in the inner wall of the cooling box (100), and the liquid outlet ends of the maintaining spray heads (411) in the same group correspond to the positions of the upper notch (320) so as to convey the sprayed quenching medium into the inner container (300).
5. The cooling apparatus for heat treatment of a spheroidal graphite cast iron gearbox according to claim 4, wherein the maintenance assembly (410) further comprises:
the pushing spray head (413) is vertically arranged on the inner bottom surface of the cooling box (100), and the sprayed quenching medium is sent into the inner container (300) through the through hole (330).
6. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 3, wherein:
the tumble assembly (420) comprises:
the overturning spray heads (421), the overturning spray heads (421) are arranged on the inner bottom surface of the cooling box (100) and are distributed annularly around the through holes (330), the overturning spray heads (421) are arranged obliquely, and the ejected quenching medium passes through the corresponding lower notch (340) to be intersected in the middle of the inner container (300).
7. The cooling device for heat treatment of a spheroidal graphite cast iron gear box according to claim 6, wherein:
the inclination angle of the overturning spray head (421) is adjustable.
8. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 1, wherein:
one side of the box cover (200) is connected with the cooling box (100), the other side of the box cover is opened or closed with the cooling box (100) through the fixed lock (220), and a handle (230) for assisting in opening or closing the box cover (200) is arranged on the circumferential side wall of the box cover (200) corresponding to the fixed lock (220).
9. The cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 8, wherein:
the bottom surface of the box cover (200) is provided with a protective filter cover (240), and the liquid inlet end of the discharge pipe (210) extends into the protective filter cover (240);
when the box cover (200) and the cooling box (100) are covered, the protective filter cover (240) extends into the upper opening of the liner (300).
10. A cooling device for heat treatment of a spheroidal graphite cast iron gearbox according to claim 3, wherein:
the main liquid inlet pipe (110) comprises an upper liquid inlet branch pipe (111) and a lower liquid inlet branch pipe (112), the upper liquid inlet branch pipe (111) is used for feeding the maintenance component (410), and the lower liquid inlet branch pipe (112) is used for feeding the rolling component (420).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310663386.3A CN116479225A (en) | 2023-06-06 | 2023-06-06 | Cooling device for heat treatment of spheroidal graphite cast iron gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310663386.3A CN116479225A (en) | 2023-06-06 | 2023-06-06 | Cooling device for heat treatment of spheroidal graphite cast iron gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116479225A true CN116479225A (en) | 2023-07-25 |
Family
ID=87214096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310663386.3A Pending CN116479225A (en) | 2023-06-06 | 2023-06-06 | Cooling device for heat treatment of spheroidal graphite cast iron gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116479225A (en) |
-
2023
- 2023-06-06 CN CN202310663386.3A patent/CN116479225A/en active Pending
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