阅读说明：本技术 一种基于传动轴的渗碳淬火分段热处理系统及其处理方法 (Carburizing and quenching segmented heat treatment system based on transmission shaft and treatment method thereof ) 是由 赵国柱 于 2021-06-28 设计创作，主要内容包括：本发明公开了一种基于传动轴的渗碳淬火分段热处理系统及其处理方法,包括底板以及通过支撑腿固定连接于底板顶部的支撑架,支撑架顶部的一侧固定连接有加热箱,本发明涉及传动轴热处理技术领域。该基于传动轴的渗碳淬火分段热处理系统及其处理方法,通过对传动轴在淬火时进行分段式预热和加热处理,可精确控制淬火时的温度范围,保证了传动轴的淬火质量,同时利用余热收集机构将传动轴预热以及冷却时产生的余热进行收集并且输送至加热箱内部,便于后续传动轴的热处理工作,节约了电力能耗,符合节能环保的需求,同时采用放置机构的设置可对多个传动轴进行稳定放置,且淬火预热完成后可统一进行拿取,减轻了人员工作强度。(The invention discloses a carburizing and quenching segmented heat treatment system based on a transmission shaft and a treatment method thereof. The carburization quenching segmented heat treatment system based on the transmission shaft and the treatment method thereof have the advantages that the transmission shaft is subjected to segmented preheating and heating treatment during quenching, the temperature range during quenching can be accurately controlled, the quenching quality of the transmission shaft is guaranteed, meanwhile, the waste heat generated during preheating and cooling of the transmission shaft is collected by the waste heat collecting mechanism and is conveyed to the inside of the heating box, the heat treatment work of the subsequent transmission shaft is facilitated, the electric power consumption is saved, the requirements of energy conservation and environmental protection are met, meanwhile, the plurality of transmission shafts can be stably placed by the placing mechanism, and the transmission shaft can be uniformly taken after the quenching preheating is completed, and the working intensity of personnel is reduced.)

1. The utility model provides a carburization quenching segmentation heat treatment system based on transmission shaft, includes bottom plate (1) and support frame (2) through supporting leg fixed connection in bottom plate (1) top, its characterized in that: a heating box (3) is fixedly connected to one side of the top of the support frame (2), a preheating box (4) is fixedly connected to the bottom of the inner wall of the heating box (3), a placing mechanism (18) is arranged inside the preheating box (4), a waste heat utilization mechanism (5) is arranged at the top of the bottom plate (1), a heating unit (6) is arranged at one side of the top of the bottom plate (1), and a temperature control unit (7) is arranged on the front side of the heating unit (6);

the waste heat utilization mechanism (5) comprises a heat collection ring (51), the surface of the preheating box (4) is fixedly connected with a heat collection plate (52), two sides of the heat collection plate (52) are fixedly connected with heat conduction columns (53), one end of each heat conduction column (53) is fixedly connected with the inner wall of the heat collection ring (51), a cavity (54) is formed in the heat collection ring (51), heat conduction fillers (55) are filled in the cavity (54), the other side of the top of the support frame (2) is fixedly connected with an air pump (56) through a connecting block, an air inlet of the air pump (56) is communicated with an air extraction pipe (57), an air outlet of the air pump (56) is communicated with an air outlet pipe (58) penetrating through the bottom of the support frame (2), the other side of the top of the bottom plate (1) is fixedly connected with a steam-water separator (59), one end of the air outlet pipe (58) is communicated with an air inlet of the steam-water separator (59), the air outlet of the steam-water separator (59) is communicated with an exhaust pipe (510) penetrating to the top of the support frame (2), and one end, located at the top of the support frame (2), of the exhaust pipe (510) is communicated with one side of the bottom of the heating box (3).

Placing mechanism (18) includes base (181), the bottom of base (181) and the bottom fixed connection of preheating cabinet (4) inner wall, the top swing joint of base (181) has montant (182), and the top fixedly connected with rack (185) of montant (182), the bottom fixedly connected with mounting bracket (183) on montant (182) surface, standing groove (184) of looks adaptation are all seted up at the top of rack (185) and mounting bracket (183), the top fixedly connected with pull ring (186) of rack (185).

2. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 1, characterized in that: the top of support frame (2) just is located one side fixedly connected with cooler bin (8) of heater bin (3), and the bottom fixedly connected with refrigerator (9) of cooler bin (8) inner wall, the one end of exhaust tube (57) is linked together with the top of cooler bin (8) one side.

3. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 2, characterized in that: the positive top fixedly connected with of cooler bin (8) is fixed case (10), and the bottom fixedly connected with central processing unit (11) of fixed case (10) inner wall, heating element (6) include first high frequency induction heater (61) and second high frequency induction heater (62), and the bottom of first high frequency induction heater (61) and second high frequency induction heater (62) all with the top fixed connection of bottom plate (1).

4. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 1, characterized in that: the temperature control unit (7) comprises a first temperature controller (71) and a second temperature controller (72), the back surfaces of the first temperature controller (71) and the second temperature controller (72) are respectively fixedly connected with the front surfaces of the first high-frequency induction heater (61) and the second high-frequency induction heater (62), the output end of the temperature control unit (7) is electrically connected with the input end of the data comparison unit (12) through a lead, the data comparison unit (12) comprises a first data comparator (121) and a second data comparator (122), the tops of the first data comparator (121) and the second data comparator (122) are respectively fixedly connected with the top of the inner wall of the fixing box (10), the output end of the first temperature controller (71) is electrically connected with the input end of the first data comparator (121) through a lead, and the output end of the second temperature controller (72) is electrically connected with the input end of the second data comparator (122) through a lead And (4) sex connection.

5. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 4, characterized in that: the input end of the data comparison unit (12) is electrically connected with the output end of the central processing unit (11) through a lead, and the input end of the central processing unit (11) is electrically connected with the output end of the feedback module (13) through a lead.

6. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 5, characterized in that: the input end of the feedback module (13) is electrically connected with the output end of the data comparison unit (12) through a lead, and the output end of the central processing unit (11) is electrically connected with the input end of the heating unit (6) through a lead.

7. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 1, characterized in that: the inner wall fixedly connected with of heating cabinet (3) runs through to first heating coil (14) of support frame (2) bottom, preheating cabinet (4) inner wall fixedly connected with runs through to second heating coil (15) of support frame (2) bottom.

8. The sectional carburizing and quenching heat treatment system based on the transmission shaft according to claim 7, characterized in that: first heating coil (14) and second heating coil (15) are located one side fixed connection of one end of support frame (2) bottom respectively in first high frequency induction heater (61) and second high frequency induction heater (62), the top and the bottom of heat collecting ring (51) surface both sides all have heating ring (16) through bracing piece fixedly connected with, the both sides of heat collecting ring (51) just are located and pass through connecting rod fixedly connected with between the relative one side of two heating ring (16) and fix ring (17).

9. A carburizing and quenching segmented heat treatment method based on a transmission shaft is characterized in that: the method specifically comprises the following steps:

s1, setting of temperature interval range: firstly, judging the range values of quenching temperatures required in the heating box (3) and the preheating box (4), respectively inputting the range values of respective temperature intervals in the first temperature controller (71) and the second temperature controller (72), and respectively sending the range values of the respective temperature intervals to the first data comparator (121) and the second data comparator (122) for storage;

s2, quenching and preheating treatment of the transmission shaft: the transmission shaft to be quenched is placed in the preheating box (4) in advance, the transmission shaft is inserted into a placing groove (184) on a placing rack (185), the transmission shaft is supported and limited by the placing groove (184) arranged at the top of an installing rack (183), an external control switch is started, a central processing unit (11) controls a second high-frequency induction heater (62) to be started, meanwhile, the second high-frequency induction heater (62) enables a second heating coil (15) to be heated, a second temperature controller (72) detects the heating temperature, when the temperature of the second heating coil (15) is detected to exceed the highest value of a range value prestored in a second data comparator (122), the central processing unit (11) controls the second high-frequency induction heater (62) to be closed, the heating operation is stopped, and the internal temperature of the preheating box (4) is enabled to be always within a set range, taking out the preheated transmission shaft by using an external hoisting device through a pull ring (186) and placing the preheated transmission shaft into a cooling box (8) for cooling;

s3, collecting and utilizing waste heat: meanwhile, the temperature in the preheating box (4) is transmitted to the surface of a heat collecting ring (51) through a heat collecting plate (52) and a heat conducting column (53), the heat collecting ring (51) transmits the temperature to the inside of the heating box (3), so that the waste heat is used for heating the inside of the heating box (3), a transmission shaft with high surface temperature can generate high-temperature steam when encountering cooling water in the cooling box (8), an air pump (56) is started, the air pump (56) transmits the high-temperature steam to a steam-water separator (59) through an air exhaust pipe (57) and an air outlet pipe (58), and the residual high-temperature steam after moisture in the high-temperature steam is absorbed is transmitted to the inside of the heating box (3) through an air exhaust pipe (510) to further preheat the heating box (3);

s4, quenching and heating treatment of the transmission shaft: then the cooled transmission shaft is placed in the heating box (3), an external control switch is started, so that the central processing unit (11) controls the first high-frequency induction heater (61) to be started, meanwhile, the first high-frequency induction heater (61) enables the first heating coil (14) to be heated, the first temperature controller (71) detects the heating temperature, when the temperature of the first heating coil (14) is detected to exceed the highest value of the range value of the pre-stored range in the first data comparator (121), the central processing unit (11) controls the first high-frequency induction heater (61) to be closed, heating operation is stopped, the internal temperature of the heating box (3) is always in the set range, finally, the transmission shaft is taken out after quenching is finished, when the transmission shaft needs to be locally quenched, the transmission shaft only needs to be inserted into the fixing ring (17) and the heating ring (16), the whole work can be completed by heating the transmission shaft locally through the heating ring (16).

10. The carburizing and quenching segmented heat treatment method based on the transmission shaft according to claim 9, characterized in that: in the step S1, the heating temperatures of the preheating box (4) and the heating box (3) are in different interval ranges, and the low value of the temperature range of the heating box (3) is higher than the high value of the temperature range of the preheating box (4).

Technical Field

The invention relates to the technical field of heat treatment of transmission shafts, in particular to a carburizing and quenching segmented heat treatment system based on a transmission shaft and a treatment method thereof.

Background

The transmission shaft is a rotating body with high rotating speed and few supports, so the dynamic balance of the transmission shaft is vital, the dynamic balance test is carried out on the transmission shaft before the transmission is delivered, the adjustment is carried out on a balancing machine, the rotation of a transmission is transmitted to a shaft of a main speed reducer for a vehicle driven by a front engine and a rear wheel, the transmission shaft can be a plurality of joints, the joints can be connected through universal joints, the transmission shaft is an important part for transmitting power in a vehicle transmission system, and the transmission shaft is used for transmitting the power of the engine to wheels together with a gearbox and a drive axle so as to enable the vehicle to generate driving force.

Referring to a heat treatment device for producing a machine tool spindle with the Chinese patent publication No. CN112430724A, a plurality of blades are fixedly connected to the inner wall of a quenching box, then when the quenching box rotates, the blades further drive the quenching liquid in the box to rotate, and the rotating quenching liquid acts on the spindle, so that the single-layer cross section of the spindle is uniformly quenched, and the actual quenching effect of the spindle is further improved; simultaneously make the quenching liquid pass through the pipeline through the water pump and get into in the storage water tank, then get into through atomizer and spray water on the main shaft, realize the main shaft after the heating and realize the preliminary treatment, possess good application prospect, however this reference patent still exists following not enoughly:

1) when utilizing above-mentioned heat treatment device to carry out quenching treatment to the transmission shaft, wherein the heating device who adopts only can realize single heating temperature, do not carry out segmentation heat treatment to the transmission shaft surface in advance, and heating temperature is difficult to accurate control, the performance after the transmission shaft heat treatment has been reduced, simultaneously in heat treatment process, can produce more waste heat, these waste heat are not fully utilized, energy resource consumption has been increased, be not conform to energy-concerving and environment-protective demand, and inside piling up the device of putting into with a plurality of transmission shafts when heat treatment, influence quenching quality and be not convenient for get the transmission shaft put.

2) The heat treatment device can only carry out heat treatment processing on a single transmission shaft once, greatly reduces the processing efficiency, increases the working strength of personnel, is difficult to realize local quenching of the transmission shaft simultaneously, and reduces the application range of the device.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a carburizing and quenching segmented heat treatment system based on a transmission shaft and a treatment method thereof, which solve the problems that the surface of the transmission shaft is not subjected to segmented heat treatment in advance, the heating temperature is difficult to control accurately, the waste heat is not fully utilized in the heat treatment process, the energy consumption is increased, the stacked transmission shafts are inconvenient to take and place, and the local quenching of the transmission shaft is difficult to realize simultaneously.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a carburization quenching segmentation heat treatment system based on transmission shaft, includes the bottom plate and passes through supporting leg fixed connection in the support frame at bottom plate top, one side fixedly connected with heating cabinet at support frame top, and the bottom fixedly connected with preheating cabinet of heating cabinet inner wall, the inside of preheating cabinet is provided with places the mechanism, the top of bottom plate is provided with waste heat utilization mechanism, one side at bottom plate top is provided with the heating unit, and the front of heating unit is provided with temperature control unit.

The waste heat utilization mechanism comprises a heat collecting ring, a heat collecting plate is fixedly connected to the surface of the preheating box, heat conducting columns are fixedly connected to the two sides of the heat collecting plate, one end of each heat conducting column is fixedly connected with the inner wall of the heat collecting ring, a cavity is formed in the heat collecting ring, heat conducting filler is filled in the cavity, an air pump is fixedly connected to the other side of the top of the support frame through a connecting block, an air inlet of the air pump is communicated with an air exhaust pipe, an air outlet pipe penetrating through the bottom of the support frame is communicated with an air outlet pipe of the air pump, a steam-water separator is fixedly connected to the other side of the top of the bottom plate, one end of the air outlet pipe is communicated with an air inlet of the steam-water separator, an air outlet of the steam-water separator is communicated with an exhaust pipe penetrating through the top of the support frame, and one end, located at the top of the support frame, of the exhaust pipe is communicated with one side of the bottom of the heating box.

The placing mechanism comprises a base, the bottom of the base is fixedly connected with the bottom of the inner wall of the preheating box, the top of the base is movably connected with a vertical rod, the top end of the vertical rod is fixedly connected with a placing rack, the bottom of the vertical rod is fixedly connected with a supporting frame, the top of the placing rack and the top of the supporting frame are both provided with a placing groove matched with each other, and the top of the placing rack is fixedly connected with a pull ring.

Preferably, the top of the support frame is fixedly connected with a cooling box on one side of the heating box, the bottom of the inner wall of the cooling box is fixedly connected with a refrigerator, and one end of the exhaust tube is communicated with the top of one side of the cooling box.

Preferably, the front top of the cooling box is fixedly connected with a fixed box, the bottom of the inner wall of the fixed box is fixedly connected with a central processing unit, the heating unit comprises a first high-frequency induction heater and a second high-frequency induction heater, and the bottoms of the first high-frequency induction heater and the second high-frequency induction heater are fixedly connected with the top of the bottom plate.

Preferably, the temperature control unit includes first temperature controller and second temperature controller, and the back of first temperature controller and second temperature controller is respectively in the front fixed connection of first high frequency induction heater and second high frequency induction heater, the output of temperature control unit passes through wire and data comparison unit's input electric connection, the data comparison unit includes first data comparator and second data comparator, the top of first data comparator and second data comparator all with the top fixed connection of fixed incasement wall, the output of first temperature controller passes through wire and first data comparator's input electric connection, the output of second temperature controller passes through wire and second data comparator's input electric connection.

Preferably, the input end of the data comparison unit is electrically connected with the output end of the central processing unit through a wire, and the input end of the central processing unit is electrically connected with the output end of the feedback module through a wire.

Preferably, the input end of the feedback module is electrically connected with the output end of the data comparison unit through a wire, and the output end of the central processing unit is electrically connected with the input end of the heating unit through a wire.

Preferably, the inner wall of the heating box is fixedly connected with a first heating coil penetrating to the bottom of the support frame, and the inner wall of the preheating box is fixedly connected with a second heating coil penetrating to the bottom of the support frame.

Preferably, the one end that first heating coil and second heating coil are located the support frame bottom is respectively in one side fixed connection of first high frequency induction heater and second high frequency induction heater, the top and the bottom of thermal-arrest ring surface both sides all are through bracing piece fixedly connected with heating ring, the both sides of thermal-arrest ring just are located and pass through connecting rod fixedly connected with solid fixed ring between the relative one side of two heating rings.

The invention also discloses a carburizing and quenching segmented heat treatment method for the transmission shaft, which comprises the following steps:

s1, setting of temperature interval range: firstly, judging the range values of quenching temperatures required in the heating box and the preheating box, respectively inputting the range values of respective temperature intervals in the first temperature controller and the second temperature controller, and respectively sending the range values of the respective temperature intervals to the first data comparator and the second data comparator for storage;

s2, quenching and preheating treatment of the transmission shaft: the transmission shaft to be quenched is placed in the preheating box in advance, the transmission shaft is inserted into the placing groove on the placing rack, the placing groove arranged at the top of the mounting frame supports and limits the transmission shaft, the external control switch is started, so that the central processor controls the second high-frequency induction heater to start, meanwhile, the second high-frequency induction heater heats the second heating coil, the second temperature controller detects the heating temperature, when it is detected that the temperature of the second heating coil exceeds the highest value of the previously stored interval range values in the second data comparator, the CPU controls the second high-frequency induction heater to be closed and stops heating work, so that the internal temperature of the preheating box is always in a set interval range, and an external hoisting device is used for taking out the preheated transmission shaft through a pull ring and placing the transmission shaft into the cooling box for cooling;

s3, collecting and utilizing waste heat: meanwhile, the temperature in the preheating box is transmitted to the surface of the heat collecting ring through the heat collecting plate and the heat conducting columns, the heat collecting ring transmits the temperature to the inside of the heating box, so that the waste heat is used for heating the inside of the heating box, a transmission shaft with high surface temperature can generate high-temperature steam when encountering cooling water in the cooling box, an air pump is started, the air pump conveys the high-temperature steam to a steam-water separator through an air exhaust pipe and an air outlet pipe, and residual high-temperature steam after moisture in the high-temperature steam is absorbed is conveyed to the inside of the heating box through the air exhaust pipe to further preheat the heating box;

s4, quenching and heating treatment of the transmission shaft: the cooled transmission shaft is placed into the heating box, the external control switch is started, the central processing unit controls the first high-frequency induction heater to be started, meanwhile, the first high-frequency induction heater enables the first heating coil to be heated, the first temperature controller detects the heating temperature, when the temperature of the first heating coil is detected to exceed the highest value of the range value of the pre-stored interval in the first data comparator, the central processing unit controls the first high-frequency induction heater to be closed, heating is stopped, the internal temperature of the heating box is enabled to be always within the set interval range, finally, the quenching is completed, the transmission shaft is taken out, when the transmission shaft needs to be locally quenched, the transmission shaft only needs to be inserted into the fixing ring and the heating ring, and the whole work can be completed by locally heating the transmission shaft through the heating ring.

Preferably, in step S1, the heating temperatures of the preheating box and the heating box are in different interval ranges, and the low value of the temperature range of the heating box is higher than the high value of the temperature range of the preheating box.

(III) advantageous effects

The invention provides a carburizing and quenching segmented heat treatment system based on a transmission shaft and a treatment method thereof. The method has the following beneficial effects:

(1) the sectional type preheating and heating treatment are carried out on the transmission shaft during quenching, the temperature range during quenching can be accurately controlled, the quenching quality of the transmission shaft is guaranteed, meanwhile, the waste heat generated during preheating and cooling of the transmission shaft by the waste heat collecting mechanism is collected and conveyed to the inside of the heating box, the heat treatment work of the follow-up transmission shaft is facilitated, the electric power energy consumption is saved, the requirements of energy conservation and environmental protection are met, meanwhile, the arrangement of the placing mechanism is adopted, the plurality of transmission shafts can be stably placed, the quenching and preheating can be uniformly taken after completion, the operation is convenient, and the working intensity of personnel is reduced.

(2) The carburization quenching segmented heat treatment system based on the transmission shaft and the treatment method thereof are characterized in that the heating box is fixedly connected to one side of the top of the support frame, the preheating box is fixedly connected to the bottom of the inner wall of the heating box, the heating rings are fixedly connected to the top and the bottom of the two sides of the surface of the heat collecting ring through the support rods, the two sides of the heat collecting ring are located between the two opposite sides of the two heating rings and are fixedly connected with fixing rings through connecting rods, more transmission shafts can be quenched simultaneously through the heating boxes and the preheating box, the heat treatment efficiency is greatly improved, and the transmission shaft can be locally heated by the aid of the fixing rings and the heating rings.

(3) The carburization quenching segmented heat treatment system based on the transmission shaft and the treatment method thereof are characterized in that a temperature control unit comprises a first temperature controller and a second temperature controller, the back surfaces of the first temperature controller and the second temperature controller are respectively and fixedly connected with the front surfaces of a first high-frequency induction heater and a second high-frequency induction heater, the output end of the temperature control unit is electrically connected with the input end of a data comparison unit through a lead, the data comparison unit comprises a first data comparator and a second data comparator, the top parts of the first data comparator and the second data comparator are both fixedly connected with the top part of the inner wall of a fixed box, the output end of the first temperature controller is electrically connected with the input end of the first data comparator through a lead, the output end of the second temperature controller is electrically connected with the input end of the second data comparator through a lead, and the input end of the data comparison unit is electrically connected with the output end of a central processing unit through a lead, the input end of the central processing unit is electrically connected with the output end of the feedback module through a wire, the input end of the feedback module is electrically connected with the output end of the data comparison unit through a wire, the output end of the central processing unit is electrically connected with the input end of the heating unit through a wire, the temperature inside the heating box and the temperature inside the preheating box can be conveniently set and detected, when the temperature is higher than the highest value of the set range value, the heating work is stopped, and the performance requirement of the transmission shaft is guaranteed.

(4) The carburization quenching segmented heat treatment system based on the transmission shaft and the treatment method thereof are characterized in that a steam-water separator is fixedly connected to the other side of the top of the bottom plate, one end of an air outlet pipe is communicated with an air inlet of the steam-water separator, an air outlet of the steam-water separator is communicated with an air outlet pipe penetrating through the top of the support frame, one end, located at the top of the support frame, of the air outlet pipe is communicated with one side of the bottom of the heating box, water inside high-temperature steam during cooling of the transmission shaft can be removed through the steam-water separator, dryness of the steam is guaranteed, the steam can be conveniently conveyed to the inside of the heating box in a follow-up mode, and meanwhile the water is discharged from a water outlet of the steam-water separator.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a cross-sectional view of a heater box structure of the present invention;

FIG. 3 is a cross-sectional view of the stationary box structure of the present invention;

FIG. 4 is a top view of the heating ring structure of the present invention;

FIG. 5 is a cross-sectional view of the heat collection ring structure of the present invention;

FIG. 6 is a cross-sectional view of the preheat tank structure of the present invention;

FIG. 7 is a cross-sectional view of the cooling box structure of the present invention;

FIG. 8 is a schematic block diagram of the architecture of the system of the present invention;

FIG. 9 is a schematic block diagram of the heating unit of the present invention;

FIG. 10 is a flow chart of a heat treatment method of the present invention;

fig. 11 is a sectional view showing the structure of the preheating chamber according to the present invention.

In the figure: 1-bottom plate, 2-support frame, 3-heating box, 4-preheating box, 5-waste heat utilization mechanism, 51-heat collecting ring, 52-heat collecting plate, 53-heat conducting column, 54-cavity, 55-heat conducting filler, 56-air pump, 57-air pumping pipe, 58-air outlet pipe, 59-steam-water separator, 510-air exhaust pipe, 6-heating unit, 61-first high-frequency induction heater, 62-second high-frequency induction heater, 7-temperature control unit, 71-first temperature controller, 72-second temperature controller, 8-cooling box, 9-refrigerator, 10-fixing box, 11-central processing unit, 12-data comparison unit, 121-first data comparator, 122-second data comparator, 13-feedback module, 14-first heating coil, 15-second heating coil, 16-heating ring, 17-fixing ring, 18-placing mechanism, 181-base, 182-vertical rod, 183-mounting rack, 184-placing groove, 185-placing rack and 186-pull ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 10, an embodiment of the present invention provides a technical solution: the utility model provides a carburization quenching segmentation heat treatment system based on transmission shaft, include bottom plate 1 and through supporting leg fixed connection in the support frame 2 at 1 top of bottom plate, one side fixedly connected with heating cabinet 3 at 2 tops of support frame, and the bottom fixedly connected with preheating cabinet 4 of 3 inner walls of heating cabinet, the inside of preheating cabinet 4 is provided with placement machine and constructs 18, the top of bottom plate 1 is provided with waste heat utilization mechanism 5, one side at 1 top of bottom plate is provided with heating element 6, and the front of heating element 6 is provided with temperature control unit 7.

In the embodiment of the invention, the waste heat utilization mechanism 5 comprises a heat collecting ring 51, a heat collecting plate 52 is fixedly connected to the surface of the preheating tank 4, heat conducting columns 53 are fixedly connected to both sides of the heat collecting plate 52, one end of each heat conducting column 53 is fixedly connected to the inner wall of the heat collecting ring 51, a cavity 54 is formed in the heat collecting ring 51, heat conducting filler 55 is filled in the cavity 54, an air pump 56 is fixedly connected to the other side of the top of the support frame 2 through a connecting block, an air inlet of the air pump 56 is communicated with an air suction pipe 57, an air outlet of the air pump 56 is communicated with an air outlet pipe 58 penetrating through the bottom of the support frame 2, a steam-water separator 59 is fixedly connected to the other side of the top of the bottom plate 1, one end of the air outlet pipe 58 is communicated with an air inlet of the steam-water separator 59, an air outlet of the steam-water separator 59 is communicated with an air outlet pipe 510 penetrating through the top of the support frame 2, and one end of the air pipe 510 positioned at the top of the support frame 2 is communicated with one side of the bottom of the heating tank 3, the moisture in the high-temperature steam can be removed through the steam-water separator 59 when the transmission shaft is cooled, the dryness of the steam is guaranteed, the steam can be conveniently conveyed to the heating box 3 subsequently, and meanwhile the moisture is discharged from the water outlet of the steam-water separator 59.

In the embodiment of the invention, the placing mechanism 18 comprises a base 181, the bottom of the base 181 is fixedly connected with the bottom of the inner wall of the preheating box 4, the top of the base 181 is movably connected with a vertical rod 182, the top end of the vertical rod 182 is fixedly connected with a placing frame 185, the bottom of the surface of the vertical rod 182 is fixedly connected with an installing frame 183, the top of the placing frame 185 and the top of the installing frame 183 are both provided with a placing groove 184 which are matched with each other, and the top of the placing frame 185 is fixedly connected with a pull ring 186.

In the embodiment of the invention, the cooling box 8 is fixedly connected to the top of the support frame 2 and positioned on one side of the heating box 3, the refrigerator 9 is fixedly connected to the bottom of the inner wall of the cooling box 8, one end of the exhaust tube 57 is communicated with the top of one side of the cooling box 8, and the refrigerator 9 can cool cooling water or cooling liquid in the cooling box 8, so that the transmission shaft can be cooled conveniently.

In the embodiment of the invention, the top of the front surface of the cooling box 8 is fixedly connected with a fixed box 10, the bottom of the inner wall of the fixed box 10 is fixedly connected with a central processing unit 11, the model of the central processing unit 11 is ARM9, the central processing unit 11 is called CPU for short, is an operation core and a control core of a computer, and is a final execution unit for information processing and program operation, the heating unit 6 comprises a first high-frequency induction heater 61 and a second high-frequency induction heater 62, and the bottoms of the first high-frequency induction heater 61 and the second high-frequency induction heater 62 are fixedly connected with the top of the bottom plate 1.

In the embodiment of the present invention, the temperature control unit 7 includes a first temperature controller 71 and a second temperature controller 72, and the back surfaces of the first temperature controller 71 and the second temperature controller 72 are respectively and fixedly connected to the front surfaces of the first high-frequency induction heater 61 and the second high-frequency induction heater 62, the high-frequency induction heaters are energy-saving and environment-friendly induction heating devices with highest heating efficiency and fastest heating speed for metal materials, and are particularly suitable for heat treatment quenching, annealing, metal diathermanous forging, extrusion molding, solder welding, etc., the output end of the temperature control unit 7 is electrically connected to the input end of the data comparison unit 12 through a wire, the data comparison unit 12 includes a first data comparator 121 and a second data comparator 122, the top portions of the first data comparator 121 and the second data comparator 122 are both and fixedly connected to the top portion of the inner wall of the fixing box 10, the output terminal of the first temperature controller 71 is electrically connected to the input terminal of the first data comparator 121 through a conductive wire, and the output terminal of the second temperature controller 72 is electrically connected to the input terminal of the second data comparator 122 through a conductive wire.

In the embodiment of the present invention, the input terminal of the data comparing unit 12 is electrically connected to the output terminal of the central processing unit 11 through a conductive wire, the input terminal of the central processing unit 11 is electrically connected to the output terminal of the feedback module 13 through a conductive wire, and the first data comparator 121 and the second data comparator 122 are LM211P in model numbers.

In the embodiment of the present invention, the input terminal of the feedback module 13 is electrically connected to the output terminal of the data comparing unit 12 through a wire, and the output terminal of the central processing unit 11 is electrically connected to the input terminal of the heating unit 6 through a wire.

In the embodiment of the invention, a first heating coil 14 penetrating to the bottom of the support frame 2 is fixedly connected to the inner wall of the heating box 3, and a second heating coil 15 penetrating to the bottom of the support frame 2 is fixedly connected to the inner wall of the preheating box 4.

In the embodiment of the invention, one ends of the first heating coil 14 and the second heating coil 15, which are positioned at the bottom of the support frame 2, are fixedly connected with one sides of the first high-frequency induction heater 61 and the second high-frequency induction heater 62 respectively, the top and the bottom of two sides of the surface of the heat collecting ring 51 are fixedly connected with the heating rings 16 through the support rods, and the fixing rings 17 are fixedly connected between two sides of the heat collecting ring 51 and the opposite sides of the two heating rings 16 through the connecting rods.

The invention also discloses a carburizing and quenching segmented heat treatment method for the transmission shaft, which comprises the following steps:

s1, setting of temperature interval range: firstly, judging the range values of quenching temperatures required in the heating box 3 and the preheating box 4, inputting the range values of respective temperature intervals in the first temperature controller 71 and the second temperature controller 72 respectively, and sending the range values of respective temperature intervals to the first data comparator 121 and the second data comparator 122 for storage respectively;

s2, quenching and preheating treatment of the transmission shaft: the transmission shaft to be quenched is put into the preheating box 4 in advance, the transmission shaft is inserted into the placing groove 184 on the placing rack 185, and the placing groove 184 arranged on the top of the mounting frame 183 supports and limits the transmission shaft, and the external control switch is started, so that the central processor 11 controls the second high-frequency induction heater 62 to start, while the second high-frequency induction heater 62 heats the second heating coil 15, the second temperature controller 72 detects the heating temperature, when it is detected that the temperature of the second heating coil 15 exceeds the highest value of the previously stored interval range values in the second data comparator 122, the second high frequency induction heater 62 is controlled to be turned off by the cpu 11, the heating operation is stopped, the internal temperature of the preheating box 4 is always in the set interval range, and the preheated transmission shaft is taken out by an external hoisting device through a pull ring 186 and is placed into the cooling box 8 for cooling;

s3, collecting and utilizing waste heat: meanwhile, the temperature in the preheating box 4 is transferred to the surface of the heat collecting ring 51 through the heat collecting plate 52 and the heat conducting columns 53, the heat collecting ring 51 transfers the temperature to the inside of the heating box 3, so that the waste heat is used for heating the inside of the heating box 3, when a transmission shaft with high surface temperature meets cooling water in the cooling box 8, high-temperature steam is generated, the air pump 56 is started, the air pump 56 conveys the high-temperature steam to the steam-water separator 59 through the air exhaust pipe 57 and the air outlet pipe 58, and the residual high-temperature steam after moisture in the high-temperature steam is absorbed is conveyed to the inside of the heating box 3 through the air exhaust pipe 510, so that the heating box 3 is further preheated;

s4, quenching and heating treatment of the transmission shaft: then the cooled transmission shaft is placed in the heating box 3, the external control switch is started, so that the central processing unit 11 controls the first high-frequency induction heater 61 to start, while the first high-frequency induction heater 61 heats the first heating coil 14, the first temperature controller 71 detects the heating temperature, when it is detected that the temperature of the first heating coil 14 exceeds the highest value of the previously stored interval range values in the first data comparator 121, the turn-off of the first high frequency induction heater 61 is controlled by the cpu 11, the heating operation is stopped, so that the internal temperature of the heating box 3 is always in the set interval range, finally the transmission shaft is taken out after quenching is finished, when the transmission shaft needs to be locally quenched, the transmission shaft only needs to be inserted into the fixing ring 17 and the heating ring 16, and the transmission shaft is locally heated through the heating ring 16, so that the whole work can be completed.

In the embodiment of the present invention, in step S1, the heating temperatures of the preheating box 4 and the heating box 3 are in different interval ranges, and the low value of the temperature range of the heating box 3 is higher than the high value of the temperature range of the preheating box 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.