阅读说明：本技术 电渣重熔炉炉头提升装置 (Furnace end lifting device of electroslag remelting furnace ) 是由 桂大兴 武学波 黄宗健 施卿 于 2021-10-19 设计创作，主要内容包括：本发明公开了一种电渣重熔炉炉头提升装置,包括：提升动力源与炉头升降与回转支架固定连接并通过第一连接组件连接固定盘和炉头支撑轴；炉头支撑轴转动连接在炉头升降与回转支架上；炉头回转套筒套装在提升动力源炉头支撑轴上；旋转动力源与炉头升降与回转支架固定连接,其通过第二连接组件连接炉头回转套筒；回转速度触发部和回转工作位置触发部形成在炉头回转套筒外壁上；回转速度限位开关和回转工作位置限位开关固定在炉头回转套筒下方的炉头升降与回转支架上；回转工作位置限位开关设置在回转速度限位开关的两侧；本发明能通过控制器根据不同材料的工艺需求编写控制程序,脱离人工操作实现自动化炉头提升和翻转,大幅提高生产效率。(The invention discloses a furnace end lifting device of an electroslag remelting furnace, which comprises: the lifting power source is fixedly connected with the furnace end lifting and rotating bracket and is connected with the fixed disc and the furnace end supporting shaft through the first connecting assembly; the furnace end supporting shaft is rotationally connected to the furnace end lifting and rotating bracket; the furnace end rotary sleeve is sleeved on a furnace end support shaft of the lifting power source; the rotary power source is fixedly connected with the furnace end lifting and rotating support and is connected with the furnace end rotating sleeve through a second connecting assembly; the rotary speed trigger part and the rotary working position trigger part are formed on the outer wall of the furnace end rotary sleeve; the rotary speed limit switch and the rotary working position limit switch are fixed on a furnace end lifting and rotating support below the furnace end rotary sleeve; the rotary working position limit switches are arranged on two sides of the rotary speed limit switch; according to the invention, a control program can be compiled through the controller according to the process requirements of different materials, manual operation is separated, automatic furnace head lifting and overturning are realized, and the production efficiency is greatly improved.)

1. An electroslag remelting furnace end lifting device, which is characterized by comprising:

the lifting power source (1) is fixedly connected with the furnace end lifting and rotating support (2), is connected with the first end of the fixed disc (4) through the first connecting assembly (3), and lifts the fixed disc (4) in a reciprocating manner within a first specified range according to a controller instruction;

the second end of the fixed disc (4) is fixedly connected with the furnace end supporting shaft (5);

the furnace end supporting shaft (5) penetrates through and is rotatably connected into the two mounting holes on the furnace end lifting and rotating bracket (2);

the furnace end rotating sleeve (6) is sleeved on the furnace end supporting shaft (5) close to the outer side of the mounting hole of the lifting power source (1), a furnace end rotating key (7) is fixed on the furnace end rotating sleeve (6), and the furnace end rotating key (7) and the furnace end supporting shaft (5) form movable clearance fit;

the rotary power source is fixedly connected with the furnace end lifting and rotating support (2), is connected with the furnace end rotating sleeve (6) through a second connecting assembly, and drives the movable furnace end rotating sleeve (6) on the furnace end supporting shaft (5) to rotate in a reciprocating mode within a second designated range according to the instruction of the controller;

the rotary speed trigger part (10) and the rotary working position trigger part (11) are formed on the outer wall of the furnace end rotary sleeve (6) in a staggered mode along the axial direction of the furnace end rotary sleeve (6);

the rotary speed limit switch (12) and the rotary working position limit switch (13) are fixed on the furnace end lifting and rotating bracket (2) below the furnace end rotary sleeve (6) in a staggered manner along the axial direction of the furnace end rotary sleeve (6);

the rotary working position limit switches (13) are arranged on two sides of the rotary speed limit switch (12);

when the furnace end rotating sleeve (6) rotates, the controller enables the rotating power source to work in a designated low-speed interval when the rotating speed trigger part (10) is in contact with the rotating speed limit switch (12), and enables the rotating power source to work in a designated high-speed interval when the rotating speed trigger part (10) is out of contact with the rotating speed limit switch (12);

the rotary working position trigger part (11) is contacted with the rotary working position limit switch (13), the controller enables the rotary power source to drive the furnace end rotary sleeve (6) to rotate, and meanwhile, the controller controls the working speed of the rotary power source according to the states of the rotary speed trigger part (10) and the rotary speed limit switch (12).

2. The furnace head lifting device for electroslag remelting furnace of claim 1, further comprising:

the first limiting part (14) and the second limiting part (15) are fixed on the furnace end lifting and rotating bracket (2) at two sides of the rotating speed triggering part (10) and the rotating working position triggering part (11);

the third limiting part (16) is formed on the outer wall of the furnace end rotary sleeve (6) between the first limiting part (14) and the second limiting part (15);

the first limiting part (14) to the third limiting part (16) limit the maximum reciprocating rotation position of the burner rotating sleeve (6) together.

3. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: when the furnace end rotating sleeve (6) rotates in any direction, the rotating speed trigger part (10) is firstly contacted with the rotating speed limit switch (12), and the rotating working position trigger part (11) is then contacted with the rotating working position limit switch (13).

4. The furnace head lifting device for electroslag remelting furnace of claim 3, wherein: when the rotary working position trigger part (11) is contacted with the rotary working position limit switch (13), the rotary speed trigger part (10) is separated from the rotary speed limit switch (12).

5. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: the lifting power source (1) is a hydraulic cylinder, and the rotating power source is a hydraulic cylinder or a stepping motor.

6. Furnace head lifting device for electroslag remelting furnace according to claim 1, characterized in that the first connecting assembly (3) comprises:

a furnace end lifting thrust pin (17), one end of which is fixedly connected with a lifting power source (1) and the other end of which is fixedly connected with a connecting piece (18);

and the connecting piece (18) is fixed in the mounting hole of the first end of the fixed disc (4).

7. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: the second connecting component is a pin shaft, one end of the second connecting component is connected with a rotary power source, and the other end of the second connecting component is connected with a furnace end rotating sleeve (6).

8. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: the rotation speed trigger part (10) is a convex part with a sector-shaped section.

9. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: the rotary working position trigger part (11) is a strip-shaped convex part.

10. The furnace head lifting device of electroslag remelting furnace according to claim 1, wherein: the first to third limiting parts are stoppers.

Technical Field

The invention relates to the field of metallurgy, in particular to a furnace end lifting device of an electroslag remelting furnace.

Background

An electroslag remelting furnace is a device for remelting metal using the heat energy generated by passing a current through a high resistance slag (electroslag/slag). Electroslag remelting is generally carried out under atmospheric pressure, and a vacuum unit can be configured to carry out vacuum refining or inert gas environment refining according to requirements.

An electroslag remelting furnace refined in an inert gas environment is special smelting equipment which uses a vacuum induction furnace and the like for primary smelting to obtain steel ingots serving as electrode rods under the protection of inert gas, utilizes alternating current to generate heat energy to melt the electrode rods inserted into a slag pool, and solidifies metal molten drops into ingots in a copper water-cooling crystallizer after the metal molten drops are cleaned by slag liquid. In smelting, furnace end rotating operation is required according to process requirements, the temperature of a smelting metal solution is very high, manual operation needs to be very careful to avoid safety accidents such as leakage, the production efficiency is greatly influenced by the production flow, and personal safety hazards are easily caused by manual operation.

Disclosure of Invention

In this summary, a series of simplified form concepts are introduced that are simplifications of the prior art in this field, which will be described in further detail in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The invention aims to provide an electroslag remelting furnace end lifting device which can automatically complete lifting and overturning of an electroslag remelting furnace end according to a design process.

In order to solve the above technical problem, the present invention provides an electroslag remelting furnace end lifting device, comprising:

the lifting power source 1 is fixedly connected with the furnace end lifting and rotating support 2, is connected with the first end of the fixed disc 4 through the first connecting assembly 3, and lifts the fixed disc 4 in a reciprocating manner within a first specified range according to the instruction of the controller;

the second end of the fixed disc 4 is fixedly connected with the furnace end supporting shaft 5;

the furnace end supporting shaft 5 penetrates through and is rotatably connected into the two mounting holes on the furnace end lifting and rotating bracket 2;

the furnace end rotating sleeve 6 is sleeved on the furnace end supporting shaft 5 close to the outer side of the mounting hole of the lifting power source 1, a furnace end rotating key 7 is fixed on the furnace end rotating sleeve 6, and the furnace end rotating key 7 and the furnace end supporting shaft 5 form movable clearance fit;

the rotary power source is fixedly connected with the furnace end lifting and rotating support 2, is connected with the furnace end rotating sleeve 6 through a second connecting assembly, and drives the movable furnace end rotating sleeve 6 on the furnace end supporting shaft 5 to rotate in a reciprocating manner within a second designated range according to the instruction of the controller;

the rotary speed triggering part 10 and the rotary working position triggering part 11 are formed on the outer wall of the furnace end rotary sleeve 6 in a staggered mode along the axial direction of the furnace end rotary sleeve 6;

the rotary speed limit switch 12 and the rotary working position limit switch 13 are fixed on the furnace end lifting and rotating bracket 2 below the furnace end rotary sleeve 6 in a staggered manner along the axial direction of the furnace end rotary sleeve 6;

the rotary working position limit switches 13 are arranged at two sides of the rotary speed limit switch 12; namely, when viewed along the axial direction of the furnace end rotary sleeve 6, the rotary speed limit switch 12 is positioned in an included angle formed by the two rotary working position limit switches 13 and the center of the furnace end rotary sleeve 6 continuously;

when the furnace end rotating sleeve 6 rotates, the controller enables the rotating power source to work in a designated low-speed interval when the rotating speed trigger part 10 is in contact with the rotating speed limit switch 12, and enables the rotating power source to work in a designated high-speed interval when the rotating speed trigger part 10 is out of contact with the rotating speed limit switch 12;

the rotary working position trigger part 11 is contacted with a rotary working position limit switch 13, the controller enables the rotary power source to drive the furnace end rotary sleeve 6 to rotate, and meanwhile, the controller controls the working speed of the rotary power source according to the states of the rotary speed trigger part 10 and the rotary speed limit switch 12.

Optionally, the furnace end lifting device for electroslag remelting furnace is further improved, and the furnace end lifting device further comprises:

a first limit part 14 and a second limit part 15 which are fixed on the furnace end lifting and rotating bracket 2 at two sides of the rotating speed trigger part 10 and the rotating working position trigger part 11; namely, when viewed along the axial direction of the burner rotating sleeve 6, the rotating speed trigger part 10 and the rotating working position trigger part 11 are positioned in an included angle formed by the first limit part 14 and the second limit part 15 and the center of the burner rotating sleeve 6 continuously;

the third limiting part 16 is formed on the outer wall of the burner rotating sleeve 6 between the first limiting part 14 and the second limiting part 15;

the first to third position-limiting portions 14 to 16 limit the maximum reciprocating position of the burner rotating sleeve 6.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, when the furnace end rotary sleeve 6 rotates in any direction, the rotary speed trigger part 10 is firstly contacted with the rotary speed limit switch 12, and the rotary working position trigger part 11 is then contacted with the rotary working position limit switch 13.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, when the rotary working position trigger part 11 is contacted with the rotary working position limit switch 13, the rotary speed trigger part 10 is separated from the rotary speed limit switch 12.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, the lifting power source 1 is a hydraulic cylinder, and the rotating power source is a hydraulic cylinder or a stepping motor.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, and the first connecting assembly 3 comprises:

a furnace end lifting thrust pin 17, one end of which is fixedly connected with the lifting power source 1 and the other end of which is fixedly connected with a connecting piece 18;

and a connecting member 18 fixed in the mounting hole fixed to the first end of the fixed plate 4.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, and the second connecting component is a pin shaft, one end of the second connecting component is connected with a rotary power source, and the other end of the second connecting component is connected with the furnace end rotating sleeve 6.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, and the rotation speed triggering part 10 is a convex part with a sector-shaped section.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, and the rotary working position triggering part 11 is a strip-shaped convex part.

Optionally, the furnace end lifting device of the electroslag remelting furnace is further improved, and the first limiting part to the fifth limiting part are stop blocks.

Compared with the prior art, the invention can at least realize the following technical effects:

1. the invention can control the reciprocating rotation speed of the rotation speed limit switch through the rotation speed trigger part and the rotation speed limit switch to form a low-speed rotation area and a high-speed rotation area, thereby effectively avoiding potential safety hazards caused by sudden acceleration/deceleration/rotation stop and accurately positioning, installing and smelting.

2. The speed of the low-speed rotation area and the high-speed rotation area can be specified through a controller (such as a PLC), and a plurality of controllable rotation speed areas can be formed by arranging more than one over-rotation speed trigger part and a rotation speed limit switch, so that the rotation of the furnace end is more linear, the accurate control is facilitated, and the production control accuracy is provided.

3. The invention also provides mechanical limiting structures (the first limiting part to the third limiting part), and when an electric control part (such as a rotation speed limiting switch, a rotation working position triggering part, a lifting power source or a rotating power source) breaks down, the mechanical limiting structures ensure that the furnace end cannot be overturned excessively to cause leakage of metal molten drops, so that potential safety hazards are avoided.

4. According to the invention, a control program can be compiled through the controller according to the process requirements of different materials, manual operation is separated, automatic furnace head lifting and overturning are realized, and the production efficiency is greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification. The drawings are not necessarily to scale, however, and may not be intended to accurately reflect the precise structural or performance characteristics of any given embodiment, and should not be construed as limiting or restricting the scope of values or properties encompassed by exemplary embodiments in accordance with the invention. The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

FIG. 1 is a first schematic structural diagram of the present invention.

FIG. 2 is a second schematic structural diagram of the present invention.

FIG. 3 is a third schematic view of the present invention, showing a view along the direction A-A in FIG. 1.

Fig. 4 is a fourth schematic structural diagram of the present invention.

Fig. 5 is a fifth structural diagram of the present invention.

Description of the reference numerals

Lifting power source 1

Furnace end lifting and rotating bracket 2

First connecting component 3

Fixing disc 4

Furnace end back shaft 5

Furnace end rotary sleeve 6

Furnace end rotary key 7

Low speed turning zone 9

Rotation speed trigger unit 10

Slewing operation position trigger part 11

Rotation speed limit switch 12

Rotary operating position limit switch 13

First position-limiting part 14

Second stopper 15

Third stopper 16

Jamb lifting thrust pin 17

A connecting member 18.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like reference numerals refer to like elements throughout the drawings. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Other words used to describe the relationship between elements or layers (e.g., "between … …" and "directly between … …", "adjacent to … …" and "directly adjacent to … …", "on … …" and "directly on … …", etc.) should be interpreted in the same manner.

A first embodiment;

as shown in fig. 1 and 2, the furnace end lifting device of an electroslag remelting furnace provided by the invention comprises:

the lifting power source 1 is fixedly connected with the furnace end lifting and rotating support 2, is connected with the first end of the fixed disc 4 through the first connecting assembly 3, and lifts the fixed disc 4 in a reciprocating manner within a first specified range according to the instruction of the controller;

the second end of the fixed disc 4 is fixedly connected with the furnace end supporting shaft 5;

the furnace end supporting shaft 5 penetrates through and is rotatably connected into the two mounting holes on the furnace end lifting and rotating bracket 2;

the furnace end rotating sleeve 6 is sleeved on the furnace end supporting shaft 5 close to the outer side of the mounting hole of the lifting power source 1, a furnace end rotating key 7 is fixed on the furnace end rotating sleeve 6, and the furnace end rotating key 7 and the furnace end supporting shaft 5 form movable clearance fit;

a rotary power source (not shown in the figure), which is fixedly connected with the furnace end lifting and rotating bracket 2, is connected with the furnace end rotating sleeve 6 through a second connecting component, and drives the movable furnace end rotating sleeve 6 on the furnace end supporting shaft 5 to rotate in a reciprocating manner within a second designated range according to the instruction of the controller;

the rotary speed triggering part 10 and the rotary working position triggering part 11 are formed on the outer wall of the furnace end rotary sleeve 6 in a staggered mode along the axial direction of the furnace end rotary sleeve 6;

the rotary speed limit switch 12 and the rotary working position limit switch 13 are fixed on the furnace end lifting and rotating bracket 2 below the furnace end rotary sleeve 6 in a staggered manner along the axial direction of the furnace end rotary sleeve 6;

the rotary working position limit switches 13 are arranged at two sides of the rotary speed limit switch 12; it should be noted that, in fig. 2, 2 rotation speed limit switches 12 and 2 rotation working position limit switches 13 are exemplarily provided, and the scheme can also be implemented by providing 1 rotation speed limit switch 12;

when the furnace end rotating sleeve 6 rotates, the controller enables the rotating power source to work in a designated low-speed interval when the rotating speed trigger part 10 is in contact with the rotating speed limit switch 12, and enables the rotating power source to work in a designated high-speed interval when the rotating speed trigger part 10 is out of contact with the rotating speed limit switch 12;

the rotary working position trigger part 11 is contacted with a rotary working position limit switch 13, the controller enables the rotary power source to drive the furnace end rotary sleeve 6 to rotate, and meanwhile, the controller controls the working speed of the rotary power source according to the states of the rotary speed trigger part 10 and the rotary speed limit switch 12.

A second embodiment;

with continuing reference to fig. 1, 2 and 3, the furnace head lifting device for electroslag remelting furnace provided by the invention comprises:

the lifting power source 1 is fixedly connected with the furnace end lifting and rotating support 2, is connected with the first end of the fixed disc 4 through the first connecting assembly 3, and lifts the fixed disc 4 in a reciprocating manner within a first specified range according to the instruction of the controller;

the second end of the fixed disc 4 is fixedly connected with the furnace end supporting shaft 5;

the furnace end supporting shaft 5 penetrates through and is rotatably connected into the two mounting holes on the furnace end lifting and rotating bracket 2;

the furnace end rotating sleeve 6 is sleeved on the furnace end supporting shaft 5 close to the outer side of the mounting hole of the lifting power source 1, a furnace end rotating key 7 is fixed on the furnace end rotating sleeve 6, and the furnace end rotating key 7 and the furnace end supporting shaft 5 form movable clearance fit;

the rotary power source is fixedly connected with the furnace end lifting and rotating support 2, is connected with the furnace end rotating sleeve 6 through a second connecting assembly, and drives the movable furnace end rotating sleeve 6 on the furnace end supporting shaft 5 to rotate in a reciprocating manner within a second designated range according to the instruction of the controller; the rotary speed triggering part 10 and the rotary working position triggering part 11 are formed on the outer wall of the furnace end rotary sleeve 6 in a staggered mode along the axial direction of the furnace end rotary sleeve 6;

the rotary speed limit switch 12 and the rotary working position limit switch 13 are fixed on the furnace end lifting and rotating bracket 2 below the furnace end rotary sleeve 6 in a staggered manner along the axial direction of the furnace end rotary sleeve 6;

the rotary working position limit switches 13 are arranged at two sides of the rotary speed limit switch 12; it should be noted that, in fig. 2, 2 rotation speed limit switches 12 and 2 rotation working position limit switches 13 are exemplarily provided, and the scheme can also be implemented by providing 1 rotation speed limit switch 12;

when the furnace end rotating sleeve 6 rotates, the controller enables the rotating power source to work in a designated low-speed interval when the rotating speed trigger part 10 is in contact with the rotating speed limit switch 12, and enables the rotating power source to work in a designated high-speed interval when the rotating speed trigger part 10 is out of contact with the rotating speed limit switch 12;

the rotary working position triggering part 11 is contacted with a rotary working position limit switch 13, the controller enables the rotary power source to drive the furnace end rotary sleeve 6 to rotate, and meanwhile, the controller controls the working speed of the rotary power source according to the states of the rotary speed triggering part 10 and the rotary speed limit switch 12;

when the burner rotating sleeve 6 rotates in any direction during working, the rotating speed trigger part 10 is firstly contacted with the rotating speed limit switch 12, the controller instructs the rotating power source to work in a low-speed interval, namely an area marked by 9 in the figure, and the rotating working position trigger part 11 is then contacted with the rotating working position limit switch 13 to trigger the rotating power source to reversely rotate; accordingly, when the swing working position trigger 11 contacts the swing working position limit switch 13, the swing speed trigger 10 is separated from the swing speed limit switch 12.

A third embodiment;

referring to fig. 1, 2 and 4, the furnace end lifting device for electroslag remelting furnace provided by the invention comprises:

the lifting power source 1 is fixedly connected with the furnace end lifting and rotating support 2, is connected with the first end of the fixed disc 4 through the first connecting assembly 3, and lifts the fixed disc 4 in a reciprocating manner within a first specified range according to the instruction of the controller;

the second end of the fixed disc 4 is fixedly connected with the furnace end supporting shaft 5;

the furnace end supporting shaft 5 penetrates through and is rotatably connected into the two mounting holes on the furnace end lifting and rotating bracket 2;

a furnace end rotating sleeve 6 which is sleeved on the furnace end supporting shaft 5 near the outer side of the mounting hole of the lifting power source 1, a furnace end rotating key 7 is fixed on the furnace end rotating sleeve 6, and the furnace end rotating key 7 and the furnace end supporting shaft 5 form movable clearance fit

The rotary power source is fixedly connected with the furnace end lifting and rotating support 2, is connected with the furnace end rotating sleeve 6 through a second connecting assembly, and drives the movable furnace end rotating sleeve 6 on the furnace end supporting shaft 5 to rotate in a reciprocating manner within a second designated range according to the instruction of the controller;

the rotary speed triggering part 10 and the rotary working position triggering part 11 are formed on the outer wall of the furnace end rotary sleeve 6 in a staggered mode along the axial direction of the furnace end rotary sleeve 6;

the rotary speed limit switch 12 and the rotary working position limit switch 13 are fixed on the furnace end lifting and rotating bracket 2 below the furnace end rotary sleeve 6 in a staggered manner along the axial direction of the furnace end rotary sleeve 6;

the rotary working position limit switches 13 are arranged at two sides of the rotary speed limit switch 12; it should be noted that, in fig. 3, 2 rotation speed limit switches 12 and 2 rotation working position limit switches 13 are exemplarily provided, and the scheme can also be implemented by providing 1 rotation speed limit switch 12;

a first limit part 14 and a second limit part 15 which are fixed on the furnace end lifting and rotating bracket 2 at two sides of the rotating speed trigger part 10 and the rotating working position trigger part 11;

the third limiting part 16 is formed on the outer wall of the burner rotating sleeve 6 between the first limiting part 14 and the second limiting part 15;

the first limiting part 14 to the third limiting part 16 limit the maximum reciprocating rotation position of the burner rotating sleeve 6 together, wherein when the burner rotating sleeve 6 rotates, the controller enables the rotating power source to work in a designated low-speed interval when the rotating speed trigger part 10 is in contact with the rotating speed limiting switch 12, and the controller enables the rotating power source to work in a designated high-speed interval when the rotating speed trigger part 10 is out of contact with the rotating speed limiting switch 12;

the rotary working position triggering part 11 is contacted with a rotary working position limit switch 13, the controller enables the rotary power source to drive the furnace end rotary sleeve 6 to rotate, and meanwhile, the controller controls the working speed of the rotary power source according to the states of the rotary speed triggering part 10 and the rotary speed limit switch 12;

when the burner rotating sleeve 6 rotates in any direction during working, the rotating speed trigger part 10 is firstly contacted with the rotating speed limit switch 12, the controller instructs the rotating power source to work in a low-speed interval, namely an area marked by 9 in the figure, and the rotating working position trigger part 11 is then contacted with the rotating working position limit switch 13 to trigger the rotating power source to reversely rotate; accordingly, when the swing working position trigger 11 contacts the swing working position limit switch 13, the swing speed trigger 10 is separated from the swing speed limit switch 12.

Alternatively, the lifting power source 1 in the first, second, or third embodiments described above is a hydraulic cylinder, and the rotational power source is a hydraulic cylinder or a stepping motor.

Referring to fig. 5, alternatively, in the first, second or third embodiments, the first connecting assembly 3 includes:

a furnace end lifting thrust pin 17, one end of which is fixedly connected with the lifting power source 1 and the other end of which is fixedly connected with a connecting piece 18;

a connector 18 fixed in a mounting hole fixed at a first end of the fixed plate 4;

alternatively, in the first, second or third embodiments, the second connecting assembly is a pin, one end of which is connected to the rotary power source, and the other end of which is connected to the burner rotating sleeve 6.

Or the second connecting component is a chain or a belt, and the rotary power source drives the furnace end rotary sleeve 6 to rotate through the chain or the belt;

alternatively, in the first, second, or third embodiment, the turning speed trigger part 10 is a convex part with a sector-shaped cross section, and the turning operation position trigger part 11 is a strip-shaped convex part.

Optionally, in the first, second or third embodiments, the first to third position-limiting portions are stoppers.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.