CN218812019U

CN218812019U - Carburizing furnace for heat treatment of gears

Info

Publication number: CN218812019U
Application number: CN202320043519.2U
Authority: CN
Inventors: 韩振州; 秦金海
Original assignee: Shouguang Jinhao Gear Co ltd
Current assignee: Shouguang Jinhao Gear Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-04-07
Anticipated expiration: 2033-01-04

Abstract

The utility model is suitable for a gear heat treatment field provides a carburizing furnace for gear heat treatment, including shell, interior stove and bell, interior stove sets up the inside at the shell, the bell sets up the top at the shell, still be provided with the heater strip between interior stove and the shell, set up the material loading mouth of radius frustum shape on the bell, the inside of material loading mouth is pegged graft and is had the sealing plug rather than the looks adaptation, it is provided with the air duct to run through on the sealing plug, the inside of sealing plug is rotated and is connected with the gyration piece, the side that the gyration piece is close to interior stove can be dismantled and be connected with the rack. The utility model discloses use the motor to drive the rotation of rotation piece, the rotation piece drives the rack and rotates, and the rotation piece uses the thermal insulation material preparation to form, has avoided the high temperature in the interior stove to transmit the outside, makes driving motor can normally work, and last pivoted rack then can make the even dispersion of carburizing gas that lets in the interior stove, makes the gear carburization effect better.

Description

Carburizing furnace for heat treatment of gears

Technical Field

The utility model belongs to gear heat treatment field especially relates to a carburizing furnace for gear heat treatment.

Background

The carburizing furnace is a commonly used heat treatment electric furnace and is mainly used for gas carburizing steel parts. The carburization process for preparing high-carbon surface layer features that the workpiece is loaded in sealed carburizing furnace, and gas (methane, ethane, etc.) or liquid (kerosene, benzene, alcohol, acetone, etc.) penetrant is introduced to decompose active carbon atoms at high temp. and permeate into workpiece surface while its core still retains original components. The surface of the gear needs to be carburized in a carburizing furnace during the heat treatment processing process of the gear.

The carburizing furnace for gear heat treatment disclosed in the Chinese utility model patent application publication No. CN215757567U comprises a furnace body, wherein the top of the furnace body is sealed by a furnace cover, and an inverted frustum-shaped window is arranged on the furnace cover; the heating mechanism is arranged in the furnace body, although the utility model has good sealing performance to the furnace body and convenient operation, the scheme that the motor drives the fan to uniformly disperse the carburizing gas is not practical, in the prior art, the highest temperature that the motor can bear is 180 ℃, and the highest temperature of carburizing and heating is 950 ℃, and because a rotor spindle of the motor is deep into the carburizing furnace, the heat in the furnace is easily transferred from the spindle to the inside of the motor, thereby causing the motor to be incapable of working normally; and because the window is smaller and the space in the furnace is large, when the furnace body is vibrated to cause the working frame to deviate from the window, the blanking is difficult and the use is inconvenient.

To avoid the above technical problems, it is necessary to provide a carburizing furnace for heat treatment of gears to overcome the above-mentioned drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a carburizing furnace for gear heat treatment aims at solving unable dispersion and the difficult problem of unloading that realizes the carburizing gas.

The embodiment of the utility model provides a realize like this, a carburizing furnace for gear heat treatment, including shell, interior stove and bell, interior stove sets up the inside at the shell, the bell sets up the top at the shell, still be provided with the heater strip between interior stove and the shell, set up the material loading mouth of radius frustum shape on the bell, peg graft in the inside of material loading mouth have rather than the sealing plug of looks adaptation, it is provided with the air duct to run through on the sealing plug, the air duct passes through the hose and is connected with the device of outside storage carburizing gas, the inside of sealing plug is rotated and is connected with the gyration piece, be provided with high temperature resistant sealing washer between gyration piece and the sealing plug, the side that the gyration piece is close to interior stove can be dismantled and be connected with the rack, still include:

the driving mechanism is arranged on the sealing plug, a transmission pair is connected between the driving mechanism and the rotating member, and the driving mechanism is used for driving the rotating member to continuously rotate;

and the auxiliary mechanism is connected to the shell, one end of the auxiliary mechanism is fixedly connected with the sealing plug, and the auxiliary mechanism is used for driving the sealing plug to ascend, descend and rotate.

According to a further technical scheme, the driving mechanism comprises a driving motor fixedly mounted on the sealing plug, an output shaft of the driving motor is fixedly connected with a first gear, a second gear is fixedly connected to the rotating member, and the first gear is meshed with the second gear.

According to a further technical scheme, the auxiliary mechanism comprises an electric hydraulic rod fixedly connected to the shell, a rotary motor is fixedly connected to the movable end of the electric hydraulic rod, a fixing frame is fixedly connected to an output shaft of the rotary motor, and one end of the fixing frame is fixedly connected with the sealing plug.

According to the further technical scheme, a plurality of fan plates are arranged on the placing frame, and gaps are reserved between the placing frame and the bottom of the inner furnace.

According to the further technical scheme, a heat insulation layer is arranged in the side wall of the shell, and heat insulation materials are filled in the heat insulation layer.

According to a further technical scheme, the furnace cover, the sealing plug and the rotating part are all made of heat insulation materials.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the embodiment of the utility model provides a carburizing furnace for gear heat treatment uses the motor to drive the rotating member to rotate, the rotating member drives the placing rack to rotate, and the rotating member is made by using heat insulation materials, thereby avoiding the high temperature in the inner furnace from being transmitted to the outside, enabling the driving motor to work normally, and the placing rack which rotates continuously can lead carburizing gas introduced into the inner furnace to be dispersed evenly, and leading the gear carburizing effect to be better; because the placing frame is detachably connected on the sealing plug, the situation that the placing frame deviates due to vibration is avoided, and the blanking is smoother.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the front cross-sectional structure of the present invention;

fig. 3 is a schematic view of the three-dimensional structure of the placing rack of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the rotating member of the present invention.

In the drawings: the device comprises a shell 1, an inner furnace 2, a furnace cover 3, a heating wire 4, a sealing plug 5, a rotary member 6, a placing rack 7, a driving mechanism 8, a driving motor 81, a first gear 82, a second gear 83, an auxiliary mechanism 9, an electric hydraulic rod 91, a rotary motor 92, a fixing frame 93, an air guide pipe 10 and a fan plate 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided to illustrate specific embodiments of the present invention.

As shown in fig. 1-4, for the utility model provides a pair of a carburizing furnace for gear heat treatment, including shell 1, inner furnace 2 and bell 3, inner furnace 2 sets up the inside at shell 1, bell 3 sets up the top at shell 1, still be provided with heater strip 4 between inner furnace 2 and the shell 1, set up the material loading mouth of inverted circular truncated cone shape on the bell 3, peg graft in the inside of material loading mouth and have the sealing plug 5 rather than the looks adaptation, it is provided with air duct 10 to run through on the sealing plug 5, air duct 10 is connected with the device of outside storage carburizing gas through the hose, the inside rotation of bell 5 is connected with rotating member 6, be provided with high temperature resistant sealing washer between rotating member 6 and the sealing plug 5, rotating member 6 can be dismantled near the side of inner furnace 2 and be connected with rack 7, for example, rack 7 is connected for using fastening nut with rotating member 6's connected mode, fastening nut's screw thread direction is opposite with rotating member 6's rotation direction, and 7's diameter is less than the minimum diameter of material loading mouth, is provided with a plurality of support columns on rack 7, support columns and gear is the overlapping point contact, reduces the gear and the overlapping area of gear, makes the gear still include the quality better:

the driving mechanism 8 is installed on the sealing plug 5, a transmission pair is connected between the driving mechanism 8 and the rotating member 6, and the driving mechanism 8 is used for driving the rotating member 6 to continuously rotate;

the auxiliary mechanism 9 is connected to the shell 1, one end of the auxiliary mechanism 9 is fixedly connected with the sealing plug 5, the auxiliary mechanism 9 is used for driving the sealing plug 5 to lift and rotate, and the auxiliary mechanism 9 is used for feeding and discharging the gear.

In the embodiment of the present invention, as shown in fig. 1-2, as a preferred embodiment of the present invention, the driving mechanism 8 includes a driving motor 81 fixedly mounted on the sealing plug 5, an output shaft of the driving motor 81 is fixedly connected with a first gear 82, a second gear 83 is fixedly connected on the rotating member 6, and the first gear 82 is meshed with the second gear 83.

In the embodiment of the present invention, as shown in fig. 1-2, as a preferred embodiment of the present invention, the assisting mechanism 9 includes an electric hydraulic rod 91 fixedly connected to the housing 1, the movable end of the electric hydraulic rod 91 is fixedly connected to a rotary motor 92, an output shaft of the rotary motor 92 is fixedly connected to a fixing frame 93, one end of the fixing frame 93 is fixedly connected to the sealing plug 5.

During the unloading, electronic hydraulic stem 91 drives sealing plug 5 and rises, makes rack 7 shift out from shell 1 completely, reuses rotating electrical machines 92 and makes sealing plug 5 rotate to the cooling bath top, and electronic hydraulic stem 91 drives rack 7 and descends, and then cools off the gear, can shift to the unloading district again after the cooling finishes and carry out the unloading, makes the device convenient to use.

In the embodiment of the present invention, as shown in fig. 3, as a preferred embodiment of the present invention, a plurality of fan plates 11 are provided on the placing rack 7, when the placing rack 7 rotates, the fan plates 11 can move the gas by the fan, so as to make the carburizing gas uniformly disperse, and the placing rack 7 and the bottom of the inner furnace 2 leave a gap, the gas can flow into the lower surface of the gear from the gap, so as to make the gear carburize comprehensively.

In the embodiment of the utility model, as the utility model discloses a preferred embodiment, be provided with the heat preservation in the lateral wall of shell 1, the inside packing of heat preservation has insulation material, avoids the heat loss of interior stove 2, avoids the staff to be scalded by shell 1 simultaneously.

In the embodiment of the present invention, as a preferred embodiment of the present invention, the furnace lid 3, the sealing plug 5 and the rotating member 6 are made of a heat insulating material, so as to prevent heat from being transferred to the outside.

This a carburizing furnace for gear heat treatment, during the use, place the gear on rack 7 earlier, then utilize electronic hydraulic stem 91 and rotary motor 92 to put into interior stove 2 with rack 7, sealing plug 5 can be fine plays the sealing effect, open the power of heater strip 4, heater strip 4 produces the heat, heat transfer is to interior stove 2, and simultaneously, it lets in the carburizing gas to interior stove 2 from air duct 10 department, gas and high temperature contact go into and decompose, form one deck carbon layer on the gear surface, driving motor 81 can drive rotating member 6 and continuously rotate, rotating member 6 drives rack 7 and rotates, make the gear evenly with carburizing gas contact, make the gear more even.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a carburizing furnace for gear heat treatment, includes shell, interior stove and bell, interior stove sets up the inside at the shell, the bell sets up the top at the shell, a serial communication port, still be provided with the heater strip between interior stove and the shell, set up the material loading mouth of radius frustum shape on the bell, peg graft in the inside of material loading mouth and have the sealing plug rather than the looks adaptation, the internal rotation of sealing plug is connected with the gyration piece, the side that the gyration piece is close to the interior stove can be dismantled and be connected with the rack, still includes:

the auxiliary mechanism is connected to the shell, one end of the auxiliary mechanism is fixedly connected with the sealing plug, and the auxiliary mechanism is used for driving the sealing plug to lift and rotate.

2. The carburizing furnace for gear heat treatment according to claim 1, wherein the driving mechanism comprises a driving motor fixedly mounted on the sealing plug, an output shaft of the driving motor is fixedly connected with a first gear, a second gear is fixedly connected to the rotating member, and the first gear is in meshed connection with the second gear.

3. The carburizing furnace for gear heat treatment according to claim 1, wherein the auxiliary mechanism comprises an electric hydraulic rod fixedly connected to the housing, a rotary motor is fixedly connected to a movable end of the electric hydraulic rod, a fixing frame is fixedly connected to an output shaft of the rotary motor, and one end of the fixing frame is fixedly connected to the sealing plug.

4. The carburizing furnace for gear heat treatment according to claim 1, wherein a plurality of fan plates are arranged on the placing frame, and a gap is left between the placing frame and the bottom of the inner furnace.

5. The carburizing furnace for gear heat treatment according to claim 4, wherein an insulating layer is arranged in the side wall of the housing, and an insulating material is filled in the insulating layer.

6. The carburizing furnace for heat treatment of gears according to any one of claims 1 to 5, wherein the furnace cover, the sealing plug, and the rotating member are all made of a heat insulating material.