CN218860846U - Well type gas carburizing furnace for automobile gear transmission part - Google Patents

Abstract

The utility model relates to a carburizing furnace technical field especially relates to a gaseous carburizing furnace of well formula for car gear drive part, including the furnace body, set up the heating resistor silk on the furnace body inside wall, set up the inside resistant hot pot of furnace body, set up at the bell on furnace body top, install stirring fan and the filling tube on the bell, the inside of resistant hot pot is provided with the work or material rest that is used for placing the work piece, and work or material rest and bell fixed connection, one side of bell is provided with first support arm, gliding elevating assembly about the first support arm of drive is installed to one side of furnace body, when the bottom of first support arm slides to the highest point, the bottom of work or material rest is located the inside top of resistant hot pot, can reduce the heat loss that goes up the unloading is, and energy-concerving and environment-protective, and charging density can be adjusted during just carburization, improves the carburized homogeneity of work piece.

Description

Well type gas carburizing furnace for automobile gear transmission part

Technical Field

The utility model relates to a carburizing furnace technical field specifically is gaseous carburizing furnace of well formula for automobile gear drive part.

Background

Carburizing is a surface heat treatment process in which a low-carbon steel piece is heated to an austenite state in a carburizing medium and is kept warm, so that carbon atoms penetrate into the surface to obtain a certain surface carbon content and carbon concentration, is one of the main processes of chemical heat treatment, has the longest history and the most extensive use in all chemical heat treatment processes, and is generally applied to low-carbon steel and low-carbon alloy steel. The aim of the carburizing treatment is to obtain high hardness, high wear resistance, high contact fatigue and high bending fatigue strength on the surface of the workpiece, and the core part still maintains good toughness and plasticity of the low-carbon steel. Carburization can be classified into solid carburization, liquid carburization, gas carburization, vacuum carburization, and plasma carburization according to the physical state of a medium used. Carburizing treatment is widely applied to the production of parts which bear high load, high abrasion and high fatigue resistance. The new energy automobile gear transmission part is generally carburized by using a well type gas carburizing furnace, wherein the well type gas carburizing furnace is gas carburizing, and specifically, the method is a method for putting a workpiece into a sealed heating furnace, introducing a carburizing agent, heating and carburizing the workpiece in a high-temperature carburizing atmosphere.

The pit type gas carburizing furnace for the automobile gear transmission part generally has the following problems:

(1) When the furnace is in work, the temperature is high, the loading and unloading are inconvenient, and the furnace cover needs to be opened during loading and unloading, so that the internal heat loss is easy to cause, and the resource waste is caused;

(2) The work piece interval is inconvenient to be adjusted to the work piece of work rest in the stove, and when the work piece was great, the packing density was great, produced big resistance to stove interior circulation air current, and the circulation stirring air current weakens, and the short circuit air current is strengthened, influences the carburization homogeneity of work piece, and when the work piece was less, space was comparatively wasted again.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well type gas carburizing furnace for automobile gear drive part to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: well type gas carburizing furnace for automobile gear drive part, including the furnace body, set up the heating resistor silk on the furnace body inside wall, set up the inside resistant heat jar of furnace body, set up the bell on furnace body top, install stirring fan and filling tube on the bell, the inside of resistant heat jar is provided with the work or material rest that is used for placing the work piece, and work or material rest and bell fixed connection, one side of bell is provided with first supporting arm, gliding lifting unit about the first supporting arm of drive is installed to one side of furnace body, when the bottom of first supporting arm slides to the highest point, the bottom of work or material rest is located the inside top of resistant heat jar.

Preferably, the material rest includes that fixing base, a plurality of support montant, a plurality of equidistant setting that set up on fixing base under the bell through the connecting rod place the seat and at least three support horizontal pole that is used for supporting the work piece spacing on supporting the montant, support horizontal pole detachably and install on the periphery wall of placing the seat.

Preferably, the placing seat is in threaded connection with the supporting vertical rod.

Preferably, the outer side wall of the fixed base is tightly attached to the inner side wall of the heat-resistant tank.

Preferably, the bottom of supporting the montant is provided with movable base, and movable base passes through the slide rail spout and slides and set up on unable adjustment base's top, movable base passes through fixing bolt and unable adjustment base is spacing fixed.

Preferably, a guide limiting module which has the same sliding direction with the first support arm is arranged on the outer side wall of the furnace body.

Preferably, the guide limiting module comprises an outer shell fixed on the outer side wall of the furnace body, a slide bar vertically installed inside the outer shell and a second supporting arm, the top end of the second supporting arm is fixedly connected with the furnace cover, and the bottom end of the second supporting arm extends to the inside of the outer shell and is connected with the slide bar in a sliding mode through a sliding block.

Compared with the prior art, the beneficial effects of the utility model are that: the well type gas carburizing furnace for the automobile gear transmission part

(1) The material rest is fixed at the bottom end of the furnace cover, the furnace cover and the material rest are synchronously driven to lift up and down by arranging the first supporting arm and the lifting assembly, so that loading and unloading are facilitated, meanwhile, the bottom end of the material rest is always positioned inside the heat-resistant tank, when the material rest moves to the topmost end to carry out loading and unloading, the material rest can block the top end of the heat-resistant tank, heat loss is reduced, and the furnace is more energy-saving and environment-friendly;

(2) Support the montant, place the seat and support the horizontal pole through setting up on the top of work or material rest, can place a plurality of work pieces simultaneously, and place the seat and support montant threaded connection, can slide from top to bottom as required and place the seat, then the adjustment is placed the interval of seat, when improving the work piece carburization homogeneity, improves space utilization, once only carburizes a plurality of work pieces.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the top-down structure of the condensing box of the present invention;

fig. 4 is a system block diagram of the present invention;

fig. 5 is a system block diagram of the present invention.

In the figure: 1. a furnace body; 2. heating resistance wires; 3. a heat-resistant tank; 4. a furnace cover; 5. a stirring fan; 6. a material rack; 601. a fixed base; 602. a connecting rod; 603. supporting the vertical rod; 604. a placing seat; 605. a support rail; 606. a movable base; 607. fixing the bolt; 7. a first support arm; 8. a lifting assembly; 9. a guide limit module; 901. an outer housing; 902. a slide bar; 903. a second support arm; 10. a feed tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not intended to be particularly descriptive in order or sequence, nor for limiting the invention, but are intended merely to distinguish components or operations described in the same technical language and are not to be construed as indicating or implying any relative importance or implying any indication of the number of technical features indicated, whereby the features defined as "first", "second", etc. may indicate or implicitly include at least one such feature. To the extent that the term "includes" and any variations thereof are used in either the detailed description or the claims, as well as the appended drawings, this is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed in a manner consistent with the meaning of a non-exclusive inclusion.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be, for example, a fixed connection or a detachable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-5, the present invention provides an embodiment: the pit-type gas carburizing furnace for the automobile gear transmission part comprises a furnace body 1, a heating resistance wire 2 arranged on the inner side wall of the furnace body 1, a heat-resistant tank 3 arranged inside the furnace body 1, a furnace cover 4 arranged at the top end of the furnace body 1, a stirring fan 5 and a feeding pipe 10 which are arranged on the furnace cover 4, wherein the feeding pipe 10 is used for adding a carburizing agent into the heat-resistant tank 3, the commonly used gas carburizing agent comprises compounds such as kerosene, acetone and natural gas, the most commonly used are the kerosene and the acetone, carbon-containing organic liquid is directly carburized into the furnace to generate a required atmosphere in the furnace, the heating resistance wire 2 is used for heating the heat-resistant tank 3, the pit-type gas carburizing furnace is also provided with a temperature sensor for detecting the temperature, a pressure gauge for detecting the furnace pressure and an electric control cabinet (not shown in the figure), so that the heating temperature and the furnace pressure can be accurately controlled, the gas inside the furnace body 1 is stirred by the stirring fan 5, the atmosphere components inside the heat-resistant tank 3 are uniform, and the furnace temperature tends to be uniform;

the inside of the heat-resistant tank 3 is provided with a material rack 6 for placing a workpiece, and the material rack 6 is fixedly connected with the furnace cover 4, specifically, the material rack 6 comprises a fixing base 601 fixed under the furnace cover 4 through a connecting rod 602, a plurality of supporting vertical rods 603 arranged on the fixing base 601, a plurality of placing bases 604 arranged on the supporting vertical rods 603 at equal intervals, and at least three supporting cross rods 605 for supporting and limiting the workpiece, wherein the length of the supporting cross rods 605 is greater than the radius of the workpiece, in the embodiment, the bottom ends of the supporting vertical rods 603 are directly fixed on the fixing base 601, the number of the supporting cross rods 605 is four, the supporting cross rods 605 are detachably mounted on the peripheral wall of the placing base 604, the supporting cross rods 605 can be in threaded connection with the side wall of the placing base 604, or movably inserted, when the workpiece is placed from top to bottom, the supporting cross rods 605 are firstly mounted on the placing base 604, then the workpiece is placed on the supporting cross rods 605, the contact area is small, and the circulation of air is facilitated;

the placing seats 604 are in threaded connection with the supporting vertical rods 603, so that the distance between the placing seats 604 can be conveniently adjusted according to the size of the workpieces, the distance between the workpieces can be further adjusted, the phenomena that the charging density is too high, large resistance is generated on circulating airflow in a furnace, circulating stirring airflow is weakened, short-circuit airflow is strengthened, the carburization uniformity of the workpieces is influenced, and when the workpieces are small, space is wasted are avoided;

a first supporting arm 7 is arranged on one side of the furnace cover 4, a lifting assembly 8 for driving the first supporting arm 7 to slide up and down is installed on one side of the furnace body 1, the lifting assembly 8 can be any one of a cylinder, a hydraulic telescopic rod, an electric telescopic rod and the like, in the embodiment, the lifting assembly 8 specifically comprises a dustproof shell fixed on the outer side wall of the furnace body 1, a lead screw vertically installed in the dustproof shell, a motor for driving the lead screw to rotate and a driving block in threaded connection with the lead screw, the bottom end of the first supporting arm 7 extends from the top end of the dustproof shell to the inside of the dustproof shell and is fixedly connected with the driving block, the sealing performance is good, sundries are prevented from entering the inside of the dustproof shell to influence transmission, when the bottom end of the first supporting arm 7 slides to the highest end, the bottom end of the material rack 6 is located at the top end inside the heat-resistant tank 3, the outer side wall of the fixing base 601 is tightly attached to the inner side wall of the heat-resistant tank 3, when the material rack 6 moves to the inside of the heat-resistant tank 3, the top end of the fixing base 601 is blocked, and heat-resistant tank 3 heat loss can be reduced;

be provided with the spacing module 9 of direction the same with the 7 slip directions of first support arm on the lateral wall of furnace body 1, the spacing module 9 of direction is including fixing shell body 901 on the furnace body 1 lateral wall, vertically install slide bar 902 and the second support arm 903 inside shell body 901, the top and the bell 4 fixed connection of second support arm 903, the bottom of second support arm 903 extends to the inside of shell body 901 and passes through slider and slide bar 902 sliding connection from the top of shell body 901, improve the stability of bell 4 motion, the leakproofness of shell body 901 is good simultaneously.

The working principle is as follows: when feeding, firstly, the material rack 6 and the furnace cover 4 are driven to synchronously ascend through the lifting component 8, when the fixing base 601 slides to the top end of the heat-resistant tank 3, workpieces are placed on the supporting cross rod 605 one by one, then the furnace cover 4 and the material rack 6 are driven to downwards move through the lifting component 8 until the bottom end of the furnace cover 4 is abutted to the top end of the furnace body 1, heating is carried out through the heating resistance wire 2, carburizing agents are added into the heat-resistant tank 3 through the charging pipe 10, gas inside the furnace body 1 is stirred through the stirring fan 5, atmosphere components inside the heat-resistant tank 3 are made uniform, meanwhile, the furnace temperature tends to be uniform, the temperature is heated to 900-950 ℃, the parts are carburized in a high-temperature carburizing atmosphere, after the parts are carburized, the material rack 6 and the furnace cover 4 are driven to synchronously ascend through the lifting component 8, when the fixing base 601 slides to the top end of the heat-resistant tank 3, the workpieces are taken down one by one and placed on another, and meanwhile, the top end of the heat-resistant tank 3 is plugged by the fixing base 601, and heat loss can be reduced.

Example 2

Referring to fig. 4, the difference between this embodiment and embodiment 1 is that a movable base 606 is disposed at the bottom end of the supporting vertical rod 603, the movable base 606 is slidably disposed at the top end of the fixed base 601 through a sliding rail, the movable base 606 is fixed to the fixed base 601 through a fixing bolt 607, a handle convenient to drag can be mounted on the movable base 606, during loading and unloading, the fixing bolt 607 is unscrewed, the movable base 606 can be directly taken down from the fixed base 601, and then the movable base 606 with good loading can be mounted, so that the time for loading and unloading is reduced, and convenience and rapidness are achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. Well type gas carburizing furnace for automobile gear drive part, including furnace body (1), heating resistor silk (2) of setting on furnace body (1) inside wall, set up inside heat-resisting jar (3) of furnace body (1), set up bell (4) on furnace body (1) top, install stirring fan (5) and filling tube (10) on bell (4), its characterized in that: the inside of heat-resisting jar (3) is provided with work or material rest (6) that are used for placing the work piece, and work or material rest (6) and bell (4) fixed connection, one side of bell (4) is provided with first supporting arm (7), gliding elevating module (8) about first supporting arm (7) of drive is installed to one side of furnace body (1), the bottom of first supporting arm (7) slides when the highest point, the bottom of work or material rest (6) is located the inside top of heat-resisting jar (3).

2. The pit-type gas carburizing furnace for the automobile gear transmission part according to claim 1, characterized in that: the material rack (6) comprises a fixed base (601) fixed under the furnace cover (4) through a connecting rod (602), a plurality of supporting vertical rods (603) arranged on the fixed base (601), a plurality of placing seats (604) arranged on the supporting vertical rods (603) at equal intervals, and at least three supporting cross rods (605) used for supporting and limiting workpieces, wherein the supporting cross rods (605) are detachably arranged on the peripheral wall of the placing seats (604).

3. The pit-type gas carburizing furnace for the automobile gear transmission part according to claim 2, characterized in that: the placing seat (604) is in threaded connection with the supporting vertical rod (603).

4. The well type gas carburizing furnace for the automobile gear transmission part according to claim 2, characterized in that: the outer side wall of the fixed base (601) is tightly attached to the inner side wall of the heat-resistant tank (3).

5. The pit-type gas carburizing furnace for the automobile gear transmission part according to claim 2, characterized in that: the bottom of supporting vertical rod (603) is provided with movable base (606), and movable base (606) slides through the slide rail spout and sets up on the top of unable adjustment base (601), movable base (606) is spacing fixed through fixing bolt (607) and unable adjustment base (601).

6. The well type gas carburizing furnace for the automobile gear transmission part according to claim 1, characterized in that: the outer side wall of the furnace body (1) is provided with a guide limiting module (9) which has the same sliding direction with the first supporting arm (7).

7. The pit-type gas carburizing furnace for the automobile gear transmission part according to claim 6, characterized in that: the guide limiting module (9) comprises an outer shell (901) fixed on the outer side wall of the furnace body (1), a sliding rod (902) vertically installed inside the outer shell (901) and a second supporting arm (903), the top end of the second supporting arm (903) is fixedly connected with the furnace cover (4), and the bottom end of the second supporting arm (903) extends to the inside of the outer shell (901) and is connected with the sliding rod (902) in a sliding mode through a sliding block.

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