CN221959261U - Cover-moving type resistance furnace and billet feeding and discharging device - Google Patents

Abstract

The utility model relates to the technical field of resistance furnaces, in particular to a movable cover type resistance furnace and a billet feeding and discharging device. The utility model provides a moving cover type resistance furnace, which comprises: a furnace base for placing a billet; the furnace cover covers the furnace base; the lifting mechanism is used for driving the furnace cover to lift so as to adjust the height of the furnace cover relative to the furnace base; the billet feeding and discharging device is arranged between the furnace base and the conveying line; the billet feeding and discharging device comprises a travelling mechanism, a turnover fork and an angle adjusting mechanism; the running mechanism is arranged between the conveying line and the furnace bottom seat. The steel billet feeding and discharging device is used for feeding and discharging, so that the feeding and discharging time can be greatly shortened, the loss speed of the temperature in the furnace during feeding is reduced, and the problem that the temperature is too low and needs to be reheated due to too long time at normal temperature is avoided.

Description

Cover-moving type resistance furnace and billet feeding and discharging device

Technical Field

The utility model relates to the technical field of resistance furnaces, in particular to a movable cover type resistance furnace and a billet feeding and discharging device.

Background

At present, when placing billets or taking out heated billets, the moving cover type resistance furnace firstly utilizes a lifting device to lift the furnace cover, then manually uses a clamp to place the billets on a furnace base, uses the clamp to take out the heated billets on the furnace base and transfers the billets to a conveyor, and the conveyor conveys the billets to a rolling mill for rolling.

At present, a cover-moving type resistance furnace completely depends on manual operation during billet feeding and discharging, and the manual feeding time is long, so that the temperature loss in the furnace is fast; the time of manual blanking is long, and the red steel in the furnace is difficult to be quickly transferred to the conveyor, so that the temperature is quickly reduced due to long residence time of the red steel at normal temperature, and the subsequent rolling work is not facilitated.

Disclosure of utility model

The utility model solves the problems that: at present, the cover-moving type resistance furnace completely depends on manual operation during billet feeding and discharging, so that the temperature loss in the furnace is rapid, and the temperature of red steel is reduced, which is unfavorable for the subsequent rolling work.

(II) technical scheme

A moving hood type resistance furnace comprising:

A furnace base for placing a billet;

The furnace cover covers the furnace base;

The lifting mechanism is used for driving the furnace cover to lift so as to adjust the height of the furnace cover relative to the furnace base;

The billet feeding and discharging device is arranged between the furnace base and the conveying line;

the billet feeding and discharging device comprises a travelling mechanism, a turnover fork and an angle adjusting mechanism;

The travelling mechanism is arranged between the conveying line and the furnace base, the overturning fork is hinged to the travelling mechanism, and the travelling mechanism is used for driving the overturning fork to move between the furnace base and the conveying line;

The angle adjusting mechanism is used for driving the overturning fork to deflect towards one side of the furnace base so that billets on the overturning fork roll down on the furnace base along the overturning fork;

And the angle adjusting mechanism is used for driving the overturning fork to deflect towards one side of the conveying line, so that billets on the overturning fork roll down onto the conveying line along the overturning fork.

According to one embodiment of the utility model, the angle adjusting mechanism comprises a telescopic member, one end of the telescopic member is hinged with the overturning fork, and the other end of the telescopic member is hinged with the travelling mechanism.

According to one embodiment of the utility model, the turnover fork comprises a plate body and a plurality of gear shaping teeth, wherein the plate body is hinged with the travelling mechanism, and one end of the telescopic piece is hinged with the plate body; the gear shaping is fixed in the plate body is close to the one end of stove base, just the gear shaping with be formed with the contained angle between the plate body, the contained angle is the obtuse angle.

According to one embodiment of the utility model, the lower surface of the plate body is provided with a connecting seat, the travelling mechanism is provided with a fixed seat, and the fixed seat is hinged with the connecting seat.

According to one embodiment of the utility model, the upper surface of the plate body is provided with a plurality of grooves for placing billets.

According to one embodiment of the utility model, the two side ends of the furnace base are respectively provided with a support frame, each support frame is provided with a vertical upright rod, the side surface of the furnace cover, facing the support frame, is provided with an angle block, and the angle block is in sliding connection with the upright rods; the lifting mechanism comprises two lifters, and the two lifters are respectively arranged on the two supporting frames.

According to one embodiment of the utility model, the lifting mechanism comprises a pushing piece, the pushing piece is vertically fixed on the furnace base, an angle code connecting piece is arranged on the side face of the furnace cover, the rod end of the pushing piece is fixedly connected with the angle code connecting piece, and the pushing piece is stretched or shortened to drive the furnace cover to lift or lower.

According to one embodiment of the utility model, at least one bearing seat is arranged on the side surface of the furnace bottom seat, a guide column which is vertically arranged is arranged on the bearing seat, at least one fixed block which corresponds to the guide column one by one is arranged on the side surface of the furnace cover, and the guide column penetrates through the fixed block.

According to one embodiment of the utility model, the hood-type resistance furnace comprises a fence mechanism, wherein the fence mechanism covers the billet feeding and discharging device inside the furnace.

The steel billet feeding and discharging device is provided with the steel billet feeding and discharging device of the moving cover type resistance furnace.

The utility model has the beneficial effects that:

The utility model provides a moving cover type resistance furnace, which comprises a furnace base, wherein the furnace base is used for placing billets; a furnace cover which covers the furnace base; the lifting mechanism is used for driving the furnace cover to lift so as to adjust the height of the furnace cover relative to the furnace base; the billet feeding and discharging device is arranged between the furnace base and the conveying line; the billet feeding and discharging device comprises a travelling mechanism, a turnover fork and an angle adjusting mechanism; the traveling mechanism is arranged between the conveying line and the furnace base, the overturning fork is hinged on the traveling mechanism, and the traveling mechanism is used for driving the overturning fork to move between the furnace base and the conveying line; the angle adjusting mechanism is used for driving the overturning fork to deflect towards one side where the furnace base is located, so that billets on the overturning fork roll down onto the furnace base along the overturning fork; and the angle adjusting mechanism is used for driving the turning fork to deflect towards one side of the conveying line, so that the steel billet on the turning fork rolls down onto the conveying line along the turning fork.

The operator places the steel billet on the turnover fork on the steel billet feeding and discharging device, then starts the elevating system, the elevating system rises the furnace mantle fast in order to expose the steel billet placed on the furnace base, then the workman places the steel billet on the turnover fork, then the running gear drives the turnover fork towards the direction of furnace base and draws close, until the one end that the turnover fork is close to the furnace base moves to the top of furnace base, then the angle adjusting mechanism drives the turnover fork to deflect towards one side where the furnace base is located, the steel billet on the turnover fork rolls down along the turnover fork onto the furnace base, then the elevating system drives the furnace mantle to descend, and the furnace mantle presses on the furnace base. After the billet is heated, the lifting mechanism lifts the furnace cover again to expose the heated billet on the furnace base, then the angle adjusting mechanism adjusts the angle of the turnover fork, so that one end of the turnover fork, which is close to the furnace base, is lower than the other end of the turnover fork, the travelling mechanism drives the turnover fork to move towards the direction of the furnace base, so that the turnover fork is inserted from the lower part of the billet, then the angle adjusting mechanism adjusts the turnover fork to be in a horizontal state, the billet is stopped on the turnover fork, then the travelling mechanism drives the turnover fork to move towards the direction of the conveying line, after the turnover fork moves to a designated position, the angle adjusting mechanism drives the turnover fork to deflect towards one side of the conveying line, the billet on the turnover fork rolls onto the conveying line along the turnover fork, and the conveying line conveys the heated billet into the rolling mill for rolling.

The billet feeding and discharging device is used for feeding, so that the feeding time can be greatly shortened, and the loss speed of the temperature in the furnace during feeding can be reduced. The steel billet feeding and discharging device is used for discharging, and heated steel billets can be rapidly taken out and conveyed to the conveying line, so that the time spent for transferring the steel billets is shortened, the temperature of the heated steel billets is slowly reduced, and the problem that the heated steel billets need to be reheated due to too low temperature caused by too long time at normal temperature is solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of a first embodiment of the present utility model;

FIG. 2 is a block diagram of a furnace base, furnace mantle and another lifting mechanism according to a first embodiment of the present utility model;

fig. 3 is a side view of fig. 2 provided in accordance with an embodiment of the present utility model.

Icon: 1. a steel structure table top; 2. a furnace base; 201. a bearing seat; 202. a guide post; 3. a steel billet; 4. a furnace cover; 401. a fixed block; 402. a corner connector; 5. a lifter; 6. a moving trolley; 7. turning over the fork; 8. a fixing seat; 9. a fence; 10. a conveying line; 11. a pushing member.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

As shown in fig. 1 to 3, a first embodiment of the present utility model provides a moving hood type resistance furnace, comprising: a furnace base 2, wherein the furnace base 2 is used for placing billets 3; a furnace cover 4, wherein the furnace cover 4 covers the furnace bottom seat 2; the lifting mechanism is used for driving the furnace cover 4 to lift so as to adjust the height of the furnace cover 4 relative to the furnace base 2; the billet 3 feeding and discharging device is arranged between the furnace base 2 and the conveying line 10; the billet feeding and discharging device comprises a travelling mechanism, a turnover fork 7 and an angle adjusting mechanism; the traveling mechanism is arranged between the conveying line 10 and the furnace base 2, the overturning fork 7 is hinged on the traveling mechanism, and the traveling mechanism is used for driving the overturning fork 7 to move between the furnace base 2 and the conveying line 10; the angle adjusting mechanism is used for driving the turning fork 7 to deflect towards the side where the furnace base 2 is located, so that billets on the turning fork 7 roll down onto the furnace base 2 along the turning fork 7; and the angle adjusting mechanism is used for driving the turning fork 7 to deflect towards the side where the conveying line 10 is located, so that the steel billet on the turning fork 7 rolls down onto the conveying line 10 along the turning fork 7.

In this embodiment, the operator places the billet 33 on the turning fork 7 on the billet 3 feeding and discharging device, then starts the lifting mechanism, the lifting mechanism rapidly lifts the furnace cover 4 to expose the billet 3 placed on the furnace base 2, then the worker places the billet 3 on the turning fork 7, then the travelling mechanism drives the turning fork 7 to approach toward the direction of the furnace base 2 until one end of the turning fork 7, which is close to the furnace base 2, moves to the position above the furnace base 2, then the angle adjusting mechanism drives the turning fork 7 to deflect toward the side where the furnace base 2 is located, the billet 3 on the turning fork 7 rolls down onto the furnace base 2 along the turning fork 7, then the lifting mechanism drives the furnace cover 4 to descend, and the furnace cover 4 is pressed on the furnace base 2. After the billet 3 is heated, the lifting mechanism lifts the furnace cover 4 again to expose the heated billet 3 on the furnace base 2, then the angle adjusting mechanism adjusts the angle of the turnover fork 7, so that one end of the turnover fork 7, which is close to the furnace base 2, is lower than the other end of the turnover fork 7, then the travelling mechanism drives the turnover fork 7 to move towards the furnace base 2, so that the turnover fork 7 is inserted from the lower part of the billet 3, then the angle adjusting mechanism adjusts the turnover fork 7 to be in a horizontal state, the billet 3 is stopped on the turnover fork 7, then the travelling mechanism drives the turnover fork 7 to move towards the conveying line 10, after the turnover fork 7 moves to a designated position, the angle adjusting mechanism drives the turnover fork 7 to deflect towards one side of the conveying line 10, the billet 3 on the turnover fork 7 rolls down onto the conveying line 10 along the turnover fork 7, and the conveying line 10 conveys the heated billet 3 into the rolling mill for rolling.

Compared with the prior art that the clamp is manually used for feeding and discharging, the embodiment has the following advantages:

Firstly, the billet 3 feeding and discharging device is used for feeding, so that the feeding time can be greatly shortened, and the loss speed of the temperature in the furnace during feeding can be reduced. Secondly, the heated steel billet 3 can be quickly taken out and conveyed to the conveying line 10 by using the steel billet 3 feeding and discharging device for discharging, so that the time for transferring the steel billet 3 is shortened, the temperature of the heated steel billet 3 is slowly reduced, and the problem that the temperature is too low and needs to be reheated due to overlong time at normal temperature is avoided. Thirdly, the feeding and discharging processes are safer, and the labor burden of workers can be reduced.

It should be noted that when the heated billet 3 is not lower than 1100 ℃, the billet 3 is manually discharged by using the clamp, and accidents are easily caused due to improper operation. And the steel billet 3 feeding and discharging device is adopted for discharging, so that manual direct participation is not needed, the accidents can be avoided, and the discharging is safer.

As a preferred embodiment, as shown in fig. 1, the billet 3 feeding and discharging device comprises a traveling mechanism, a turning fork 7 and an angle adjusting mechanism. Wherein running gear sets up between transfer chain 10 and stove base 2, and the lower surface of upset fork 7 articulates and installs on running gear, and running gear is used for driving upset fork 7 and removes between stove base 2 and transfer chain 10, and angle adjustment mechanism is used for driving upset fork 7 and rotates around its articulated joint with running gear.

Specifically, during feeding, the overturning fork 7 is in a horizontal state, a worker places the steel billet 3 on the overturning fork 7, then the travelling mechanism drives the overturning fork 7 to be close to the direction of the furnace base 2 until one end of the overturning fork 7, which is close to the furnace base 2, moves to the position above the furnace base 2, then the angle adjusting mechanism drives the overturning fork 7 to deflect towards the side of the furnace base 2, and the steel billet 3 on the overturning fork 7 rolls down to the furnace base 2 along the overturning fork 7. Therefore, the steel billet 3 is placed on the overturning fork 7 in advance only by manpower, and the steel billet 3 feeding and discharging device automatically completes feeding work, so that the feeding efficiency is improved.

During blanking, the angle adjusting mechanism firstly adjusts the angle of the overturning fork 7, so that one end of the overturning fork 7, which is close to the furnace base 2, is lower than the other end, then the travelling mechanism drives the overturning fork 7 to move towards the direction of the furnace base 2, so that the overturning fork 7 is inserted from the lower part of the billet 3, then the angle adjusting mechanism adjusts the overturning fork 7 to be in a horizontal state, the billet 3 stably stops on the overturning fork 7, then the travelling mechanism drives the overturning fork 7 to move towards the direction of the conveying line 10, after the overturning fork 7 moves to a designated position, the angle adjusting mechanism drives the overturning fork 7 to deflect towards the side where the conveying line 10 is located, and the billet 3 on the overturning fork 7 rolls onto the conveying line 10 along the overturning fork 7. The billet 3 feeding and discharging device automatically completes the transfer work of the billet 3, and has high transfer efficiency and small time.

As a preferred embodiment, as shown in fig. 1, the hearth base 2 is provided on the upper surface of the steel structure table top 1, and the top of the conveyor line 10 is substantially the same as the top of the hearth base 2. The travelling mechanism comprises a guide rail and a travelling trolley 6, the guide rail is positioned between the steel structure table top 1 and the conveying line 10, and the travelling trolley 6 is slidably arranged on the guide rail. Specifically, the moving trolley 6 is a robot trolley, and the moving trolley 6 can automatically move left and right along the guide rail.

Optionally, the running gear includes sharp module and moving platform, and slidable mounting has the sliding block on the sharp module, and moving platform's bottom fixed mounting is on the sliding block, drives the moving platform through sharp module drive sliding block and removes.

Preferably, as shown in fig. 1, the overturning fork 7 comprises a plate body and a plurality of gear shaping teeth, the plate body is rectangular plate-shaped, a connecting seat is fixedly arranged on the lower surface of the plate body, a fixing seat 8 is arranged at the top of the mobile trolley 6, and the connecting seat is hinged with the fixing seat 8 through a pin shaft. The plate body is close to the one end of stove base 2 and evenly is equipped with a plurality of gear shaping, is formed with the contained angle between gear shaping and the plate body, and the contained angle is the obtuse angle.

A plurality of pillows are provided on the upper surface of the hearth base 2, the pillows are provided at equal intervals, and the billet 3 is placed on the plurality of pillows. So that a space for inserting the gear shaping is formed between the lower surface of the billet 3 and the upper surface of the furnace base 2.

Preferably, the angle adjusting mechanism comprises an air cylinder, the bottom end of the air cylinder is hinged with the upper surface of the movable trolley 6, and the top end of the air cylinder is hinged with the lower surface of the plate body of the overturning fork 7. The overturning fork 7 is driven to rotate around the hinge point of the connecting seat and the fixed seat 8 by the extension or the shortening of the air cylinder.

As shown in fig. 1, during blanking, the cylinder is extended to drive the turnover fork 7 to rotate counterclockwise, so that the left side of the turnover fork 7 is lower than the right side, then the moving trolley 6 drives the turnover fork 7 to move towards the furnace base 2, the gear shaping in the turnover fork 7 is inserted below the billet 3, then the cylinder is shortened to drive the turnover fork 7 to rotate clockwise to a horizontal state, and the billet 3 on the gear shaping slides onto the plate body. Then travelling car 6 drives upset fork 7 and steel billet 3 to remove towards transfer chain 10, when waiting that upset fork 7 removes to be close to transfer chain 10 soon, the cylinder shortens once more so that drive upset fork 7 clockwise rotation once more for upset fork 7 deflects towards transfer chain 10's direction, until the right-hand member of upset fork 7 is less than the left end, and steel billet 3 on the upset fork 7 can roll along upset fork 7 to on transfer chain 10 like this.

Because the whole material taking process is automatic, manual participation is not needed, the material taking efficiency is obviously improved, and the transfer time for heating the steel billet 3 is shortened, so that the problem that the temperature of the steel billet 3 is excessively reduced due to overlong transfer time is avoided.

Optionally, the free end of the gear shaping, i.e. the left end of the slot, is provided with a protruding block, and when the turning fork 7 rotates clockwise to pick up the billet 3, the billet 3 will not roll down from the gear shaping due to the blocking effect of the protruding block.

The steel billet 3 is divided into square steel batches and steel bars, and the steel bars are easy to roll off from the overturning fork 7 in consideration of the fact that the steel bars are fed or discharged, so that a plurality of grooves are formed in the plate body of the overturning fork 7, the lower ends of the steel bars stay in the grooves, and the steel bars are not easy to roll off. Specifically, during the material loading, upset fork 7 adjusts to the horizontality, then operating personnel places the steel bar in the recess on the upset fork 7, and the steel bar is difficult for rolling like this, and after upset fork 7 is close to stove base 2, cylinder drive upset fork 7 anticlockwise rotation, after rotatory to a certain extent, the steel bar breaks away from the recess and rolls along upset fork 7 and falls on the stove base 2.

Preferably, fig. 1 is a side view of a hood-type resistance furnace, and support frames are fixedly installed at two ends of a furnace base 2, respectively, and are in the form of door-shaped frames. Two vertical rods are welded on each supporting frame and are vertically arranged. Further, two corner blocks are fixedly installed on two side surfaces of the furnace cover 4 respectively, holes for the vertical rods to pass through are formed in each corner block, and the corner blocks can move up and down along the vertical rods. The lifting mechanism comprises two lifters 5, the lifters 5 are arranged, the two lifters 5 are respectively arranged on the two supporting frames, the two lifters 5 realize synchronous variable-frequency lifting at the two ends of the furnace hood 4, and automatic hood lifting actions are completed.

It should be noted that, in the conventional resistance furnace, the furnace cover 4 is lifted by using a lifting device, the lifting device is tied up on lifting lugs at two ends of the furnace cover 4 by using a steel cable, the lifting speed is slow, the temperature of the steel billet 3 on the furnace base 2 is always reduced in the lifting process, the lifting process is unstable, and the furnace cover 4 is easy to shake.

In this embodiment, two lifters 5 are used to drive two ends of the furnace cover 4 to lift in a synchronous frequency conversion manner, so that the lifting speed is high, the furnace cover 4 is not easy to shake, and the furnace cover 4 can be lifted more stably.

As an alternative embodiment, as shown in fig. 2 and 3, the lifting mechanism comprises a plurality of pushing members 11, and the pushing members 11 are hydraulic cylinders or electric push rods, preferably hydraulic cylinders. The bottom of the pushing piece 11 is fixed on the side of the furnace base 2, the pushing piece 11 is vertically arranged, a plurality of corner connector pieces 402 are arranged on the side of the furnace cover 4, the corner connector pieces 402 are in one-to-one correspondence with the pushing piece 11, the corner connector pieces 402 are located right above the pushing piece 11, and the rod ends of the pushing piece 11 are fixedly connected with the corner connector pieces 402. The pushing member 11 is thus extended to lift the hood 4, driving the hood 4 up, and the pushing member 11 is shortened to lower the height of the hood 4 so that the hood 4 falls back onto the oven base 2.

Optionally, in order to improve stability when the furnace cover 4 is lifted, as shown in fig. 2 and 3, a plurality of bearing seats 201 are arranged on the side surface of the furnace bottom seat 2, guide posts 202 vertically arranged are arranged on each bearing seat 201, a plurality of fixing blocks 401 corresponding to the guide posts 202 one by one are arranged on the side surface of the furnace cover 4, the fixing blocks 401 are positioned right above the corresponding bearing seats 201, holes for the guide posts 202 to pass through are formed in the fixing blocks 401, and the guide posts 202 pass through the holes of the fixing blocks 401.

Optionally, in order to improve the work area of avoiding the external personnel from entering the billet feeding and discharging device by mistake, as shown in fig. 1, a rail 9 is arranged between the steel structure table top 1 and the conveying line 10, two rails 9 are arranged, and the two rails 9 are respectively positioned at two sides of the billet feeding and discharging device.

Embodiment two:

The first embodiment of the utility model provides a steel billet feeding and discharging device, and the steel billet 3 feeding and discharging device is the steel billet 3 feeding and discharging device in the first embodiment. The billet 3 feeding and discharging device is used for the billet 3 feeding and discharging device to convey the billet 3 onto the furnace base 2, and to take out the billet 3 on the furnace base 2 and convey it onto the conveyor line 10.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct or indirect through an intermediate medium, or may be internal to two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A moving hood type resistance furnace, characterized by comprising:

A furnace base (2), wherein the furnace base (2) is used for placing billets;

a furnace cover (4), wherein the furnace cover (4) covers the furnace bottom seat (2);

The lifting mechanism is used for driving the furnace cover (4) to lift so as to adjust the height of the furnace cover (4) relative to the furnace bottom seat (2);

The billet feeding and discharging device is arranged between the furnace base (2) and the conveying line (10);

The billet feeding and discharging device comprises a travelling mechanism, a turnover fork (7) and an angle adjusting mechanism;

The travelling mechanism is arranged between the conveying line (10) and the bottom seat (2), the overturning fork (7) is hinged to the travelling mechanism, and the travelling mechanism is used for driving the overturning fork (7) to move between the bottom seat (2) and the conveying line (10);

The angle adjusting mechanism is used for driving the overturning fork (7) to deflect towards the side where the furnace bottom seat (2) is located, so that billets on the overturning fork (7) roll down onto the furnace bottom seat (2) along the overturning fork (7);

And the angle adjusting mechanism is used for driving the overturning fork (7) to deflect towards one side where the conveying line (10) is located, so that billets on the overturning fork (7) roll down onto the conveying line (10) along the overturning fork (7).

2. A hood-type resistance furnace according to claim 1, characterized in that the angle adjusting mechanism comprises a telescopic member, one end of which is hinged with the turning fork (7) and the other end of which is hinged with the travelling mechanism.

3. A hood-type resistance furnace according to claim 2, characterized in that the turning fork (7) comprises a plate body and a plurality of gear shaping teeth, the plate body is hinged with the travelling mechanism, and one end of the telescopic piece is hinged with the plate body; the gear shaping is fixed in the plate body is close to the one end of stove base (2), just the gear shaping with be formed with the contained angle between the plate body, the contained angle is the obtuse angle.

4. A hood-type resistance furnace according to claim 3, characterized in that a connecting seat is arranged on the lower surface of the plate body, a fixed seat (8) is arranged on the travelling mechanism, and the fixed seat (8) is hinged with the connecting seat.

5. A hood-type resistance furnace according to claim 3, wherein the upper surface of the plate body is provided with a plurality of grooves for placing billets.

6. The hood-type resistance furnace according to claim 1, wherein supporting frames are respectively arranged at two side ends of the furnace base (2), vertical rods which are vertically arranged are arranged on each supporting frame, and corner blocks are arranged on the side surfaces of the furnace hood (4) facing the supporting frames and are in sliding connection with the vertical rods; the lifting mechanism comprises two lifters (5), and the two lifters (5) are respectively arranged on the two supporting frames.

7. The hood-type resistance furnace according to claim 1, wherein the lifting mechanism comprises a pushing member (11), the pushing member (11) is vertically fixed on the furnace base (2), a corner connector (402) is arranged on the side face of the furnace hood (4), the rod end of the pushing member (11) is fixedly connected with the corner connector (402), and the pushing member (11) is stretched or shortened to drive the furnace hood (4) to rise or fall.

8. The moving hood type resistance furnace according to claim 7, wherein at least one bearing seat (201) is arranged on the side face of the furnace bottom seat (2), guide posts (202) which are vertically arranged are arranged on the bearing seat (201), at least one fixed block (401) which corresponds to the guide posts (202) one by one is arranged on the side face of the furnace hood (4), and the guide posts (202) penetrate through the fixed block (401).

9. The moving hood type electric resistance furnace according to claim 1, wherein the moving hood type electric resistance furnace includes a fence mechanism which houses the billet feeding and discharging device inside thereof.

10. A billet feeding and discharging device, characterized in that the billet feeding and discharging device is a billet feeding and discharging device provided in a moving cover type resistance furnace according to any one of claims 1 to 9.