阅读说明：本技术 一种空心锻件的锻造用加热装置及锻造设备 (Heating device for forging hollow forging and forging equipment ) 是由 周岩 金嘉瑜 刘凯泉 郭义 杨晓禹 李行波 于 2020-06-03 设计创作，主要内容包括：本发明提供了一种空心锻件的锻造用加热装置及锻造设备,具体涉及自由锻技术领域。空心锻件的锻造用加热装置包括支撑机构以及多个加热机构,支撑机构开设有第一通孔；多个加热机构与支撑机构连接,多个加热机构环绕第一通孔设置,多个加热机构的加热端朝向支撑机构的一侧设置,第一通孔穿过支撑机构的一侧；通过空心锻件的锻造用加热装置对套在芯棒外的钢质锻件的端部加热。相对于现有技术,实现了对芯棒的端头的钢质锻件的端面进行保温的功能。(The invention provides a heating device for forging a hollow forging and forging equipment, and particularly relates to the technical field of free forging. The heating device for forging the hollow forging piece comprises a supporting mechanism and a plurality of heating mechanisms, wherein the supporting mechanism is provided with a first through hole; the heating mechanisms are connected with the supporting mechanism, the heating mechanisms are arranged around the first through hole, the heating ends of the heating mechanisms are arranged towards one side of the supporting mechanism, and the first through hole penetrates through one side of the supporting mechanism; the end part of the steel forging sleeved outside the core rod is heated by the heating device for forging the hollow forging. Compared with the prior art, the heat preservation function of the end face of the steel forging at the end of the core rod is realized.)

1. A heating device for forging a hollow forging, comprising:

the supporting mechanism (2) is provided with a first through hole (211); and

the heating mechanism (3) is connected with the supporting mechanism (2), the heating mechanism (3) is arranged around the first through hole (211), the heating end (34) of the heating mechanism (3) faces one side of the supporting mechanism (2) and is arranged in a plurality of modes, and the first through hole (211) penetrates one side of the supporting mechanism (2).

2. The heating device for forging of the hollow forging of claim 1, wherein the heating mechanism (3) is a burner, the heating mechanism (3) is hinged with the supporting mechanism (2), and a heating end (34) of the heating mechanism (3) is suitable for swinging along the radial direction of the first through hole (211).

3. The heating device for forging a hollow forging according to claim 2,

the plurality of heating mechanisms (3) are arranged in a first annular group and a second annular group, the plurality of heating mechanisms (3) of the first annular group being disposed around the first through hole (211), and the plurality of heating mechanisms (3) of the second annular group being disposed around the first annular group.

4. The heating device for forging the hollow forging piece according to claim 2, wherein the heating device for forging the hollow forging piece further comprises a gas pipeline and a combustion-supporting air pipeline, the gas pipeline and the combustion-supporting air pipeline are respectively arranged at the supporting mechanism (2), the gas pipeline is used for being respectively communicated with the plurality of heating mechanisms (3), the combustion-supporting air pipeline is used for being respectively communicated with the plurality of heating mechanisms (3), the gas pipeline is connected with each heating mechanism (3) through a first hose (311), and the combustion-supporting air pipeline is connected with each heating mechanism (3) through a second hose (312).

5. The heating device for forging of a hollow forging according to claim 4, wherein the gas line includes a first annular pipe (41) and a plurality of first connecting pipes (32), the first annular pipe (41) is connected to a natural gas source, the first annular pipe (41) is connected to each of the first connecting pipes (32), the first connecting pipes (32) are connected to the first hoses (311) in a one-to-one correspondence,

the combustion-supporting air pipeline comprises a second annular pipe (42) and a plurality of second connecting pipes (33), the second annular pipe (42) is connected with the air blower, the second annular pipe (42) is connected with each second connecting pipe (33), the second connecting pipes (33) are correspondingly connected with the second hoses (312),

the diameter of the first annular pipe (41) is smaller than that of the second annular pipe (42), the first connecting pipe (32) and the second connecting pipe (33) are arranged in parallel, and the first hose (311) and the second hose (312) are arranged in a crossed mode.

6. The heating device for forging of hollow forging of claim 5, characterized in that, first connecting pipe (32) is provided with needle valve (321), second connecting pipe (33) is provided with butterfly valve (331), needle valve (321) is used for adjusting the flow of first connecting pipe (32), butterfly valve (331) is used for adjusting the flow of second connecting pipe (33).

7. The heating device for forging of a hollow forging according to any one of claims 1 to 6, wherein the supporting mechanism (2) comprises two plate-shaped members (21) arranged at intervals and a plurality of fourth connecting members (216), the fourth connecting members (216) are in a lacing wire structure, the two supporting plates (21) are connected through the plurality of fourth connecting members (216), the first through holes (211) are opened on the plate surfaces of the plate-shaped members (21),

the plate surface of one plate-shaped part (21) is provided with a plurality of second through holes (213), the heating mechanisms (3) are burners, each heating mechanism (3) is correspondingly inserted into one second through hole (213), and the heating end (34) of each heating mechanism (3) extends out of the outer plate surface of one plate-shaped part (21).

8. The heating device for forging of a hollow forging according to claim 7, wherein the supporting mechanism (2) further comprises a positioning mechanism, the positioning mechanism comprises a plurality of connecting arms (217) and a positioning ring (5), the connecting arms (217) are connected with the outer plate surface of one plate-shaped member (21), the positioning ring (5) is arranged outside one plate-shaped member (21), and the positioning ring (5) is connected with the plurality of connecting arms (217).

9. The heating device for forging of a hollow forging according to claim 7, wherein the second through holes (213) are arranged at intervals with the heating means (3) inserted therein, the support means (2) further comprises a plurality of second connecting plates (214), the second connecting plates (214) are connected to one of the plate-like members (21), the second connecting plates (214) protrude from the plate surface of one of the plate-like members (21), the heating means (3) are hinged to the second connecting plates (214), and the heating means (3) are adapted to swing with respect to the second through holes (213) into which they are inserted;

or/and a plurality of heating mechanisms (3) are arranged at the plate surface of one plate-shaped member (21) into a first annular group and a second annular group, the plurality of heating mechanisms (3) of the first annular group are arranged around the first through hole, and the plurality of heating mechanisms (3) of the second annular group are arranged around the first annular group; the supporting mechanism (2) further comprises a first annular pipe (41), a second annular pipe (42), a plurality of first connecting pipes (32) and a plurality of second connecting pipes (33), the first annular pipe (41) and the second annular pipe (42) are arranged between the plate-shaped parts (21), the first annular pipe (41) is connected with a natural gas source, the first annular pipe (41) is connected with each first connecting pipe (32), the first connecting pipes (32) are connected with the heating mechanism (3) in a one-to-one correspondence mode, the second annular pipe (42) is connected with a blower, the second annular pipe (42) is connected with each second connecting pipe (33), the second connecting pipes (33) are connected with the heating mechanism (3) in a one-to-one correspondence mode, and the plate-shaped parts (21) are circular plates.

10. A forging apparatus, comprising the heating device for forging of a hollow forging according to any one of claims 1 to 9 and a mandrel (1), wherein the mandrel (1) is externally sheathed with a steel forging (11), the mandrel (1) is inserted into the first through hole (211), the mandrel (1) is in clearance fit with the first through hole (211), and the heating device for forging of a hollow forging is used for heating the end of the steel forging (11).

Technical Field

The invention relates to the technical field of free forging, in particular to a heating device for forging a hollow forging and forging equipment.

Background

Ultra-large steel hollow pipeline, for example stainless steel hollow pipeline, especially take the special-shaped integration pipeline forging of side direction mouthpiece, because product specification restriction, can not take shape through the mode of hot extrusion or rolling, only can adopt the mode of freely forging the plug and draw out long to make, because stainless steel forges the interval narrow, deformation resistance is big, easy fracture in forging, lead to the rejection rate at a high level, especially to hollow forging, when the forging is drawn out, because the temperature reduction of tip inside and outside circle edges and corners is very fast, the forging fracture often appears in this position, the crack continues to expand along degree of depth and length direction in subsequent forging, lead to forging to go on continuously, draw out long to stainless steel hollow plug, its end inside and outside edges and corners is the position that the crackle appears most easily.

The traditional steel part forging heat preservation mode is by two kinds, one kind is the flexible sheath, wraps the forging surface with the heat preservation asbestos after the forging goes out of the stove promptly to play the purpose of heat preservation, nevertheless the plug is drawn out the in-process because the forging constantly contacts with the appurtenance, the problem that the heat preservation asbestos hangs often appears, leads to the heat preservation inefficacy. The other type is that the forge piece is sprayed with heat preservation paint after being discharged from a furnace, the method can avoid the problem that the heat preservation asbestos cannot be coated for a long time, but the heat preservation paint is water-based paint, the surface of the forge piece is greatly cooled in the spraying process, the influence on the workshop environment is great, most of the paint contains acidic substances, pungent smell is released after preheating, certain influence is also exerted on the body of an operator, in addition, a spray gun is close to a hot forge piece for a long time, paint solidification and nozzle blockage often occur in a nozzle, the traditional forging heat preservation modes are difficult to effectively preserve heat of the inner and outer edges and corners of the end of the steel hollow core rod, and cracks appear in the inner and outer edges and corners of.

Disclosure of Invention

The invention aims to solve the problem that the internal and external edges and corners of a steel forging at the end of a steel hollow core rod are difficult to be effectively insulated by the existing forging heat insulation mode to a certain extent, so that the internal and external edges and corners of the steel forging have cracks.

In order to solve the above problems, the present invention provides a heating device for forging a hollow forging, comprising:

the supporting mechanism is provided with a first through hole; and

the heating mechanism is arranged around the first through hole, the heating end of the heating mechanism faces one side of the supporting mechanism, and the first through hole penetrates through one side of the supporting mechanism.

Further, the heating mechanism is a burner, the heating mechanism is hinged to the supporting mechanism, and the heating end of the heating mechanism is suitable for swinging along the radial direction of the first through hole.

Further, the plurality of heating mechanisms are arranged in a first annular group and a second annular group, the plurality of heating mechanisms of the first annular group being disposed around the first through hole, the plurality of heating mechanisms of the second annular group being disposed around the first annular group.

Further, the heating device for forging the hollow forging piece comprises a gas pipeline and a combustion-supporting air pipeline, the gas pipeline and the combustion-supporting air pipeline are respectively arranged at the supporting mechanism, the gas pipeline is used for being communicated with the plurality of heating mechanisms respectively, the combustion-supporting air pipeline is used for being communicated with the plurality of heating mechanisms respectively, the gas pipeline is connected with each heating mechanism through a first hose, and the combustion-supporting air pipeline is connected with each heating mechanism through a second hose.

Further, the gas pipeline comprises a first annular pipe and a plurality of first connecting pipes, the first annular pipe is connected with a natural gas source, the first annular pipe is connected with each first connecting pipe, and the first connecting pipes are connected with the first hoses in a one-to-one correspondence manner;

the combustion-supporting air pipeline comprises a second annular pipe and a plurality of second connecting pipes, the second annular pipe is connected with the air blower, the second annular pipe is connected with each second connecting pipe, and the second connecting pipes are connected with the second hoses in a one-to-one correspondence manner;

the diameter of the first annular pipe is smaller than that of the second annular pipe, the first connecting pipe and the second connecting pipe are arranged in parallel, and the first hose and the second hose are arranged in a crossed mode.

Further, first connecting pipe is provided with the needle valve, the second connecting pipe is provided with the butterfly valve, the needle valve is used for adjusting the flow of first connecting pipe, the butterfly valve is used for adjusting the flow of second connecting pipe.

Furthermore, the supporting mechanism comprises two plate-shaped parts arranged at intervals and a plurality of fourth connecting parts, the fourth connecting parts are of lacing wire structures, the two supporting plates are connected through the plurality of fourth connecting parts, and the first through holes are formed in the plate surfaces of the plate-shaped parts;

the plate surface of one plate-shaped part is provided with a plurality of second through holes, the heating mechanisms are burners, each heating mechanism is inserted into one second through hole in a one-to-one correspondence mode, and the heating end of each heating mechanism extends out of the outer plate surface of one plate-shaped part.

Further, the supporting mechanism further comprises a positioning mechanism, the positioning mechanism comprises a plurality of connecting arms and positioning circular rings, the connecting arms are connected with one of the outer side plate surfaces of the plate-shaped part, the positioning circular rings are arranged outside the plate-shaped part, and the positioning circular rings are connected with the connecting arms.

Furthermore, the second through holes are arranged at intervals with the heating mechanism inserted into the second through holes, the supporting mechanism further comprises a plurality of second connecting plates, the second connecting plates are connected with one plate-shaped piece, the second connecting plates protrude out of the plate surface of the plate-shaped piece, the heating mechanism is hinged with the second connecting plates, and the heating mechanism is suitable for swinging relative to the second through holes into which the heating mechanism is inserted;

or/and a plurality of said heating mechanisms are arranged at one said plate panel surface in a first annular group and a second annular group, said plurality of said heating mechanisms of said first annular group being arranged around said first through hole, said plurality of said heating mechanisms of said second annular group being arranged around said first annular group; the supporting mechanism further comprises a first annular pipe, a second annular pipe, a plurality of first connecting pipes and a plurality of second connecting pipes, the first annular pipe and the second annular pipe are arranged between the plate-shaped pieces, the first annular pipe is connected with a natural gas source, the first annular pipe is connected with each first connecting pipe, the first connecting pipes are connected with the heating mechanism in a one-to-one mode, the second annular pipe is connected with the air blower, the second annular pipe is connected with each second connecting pipe, the second connecting pipes are connected with the heating mechanism in a one-to-one mode, and the plate-shaped pieces are circular plates.

In addition, the invention also provides forging equipment which comprises the heating device for forging the hollow forging.

Since the technical improvement and the technical effect of the forging apparatus are the same as those of the heating device for forging a hollow forging, the technical effect of the forging apparatus will not be described in detail.

Furthermore, the forging equipment also comprises a core rod, wherein a steel forging is sleeved outside the core rod, the core rod is inserted into the first through hole, the core rod is in clearance fit with the first through hole, and the heating device for forging the hollow forging is used for heating the end part of the steel forging.

Compared with the prior art, the heating device for forging the hollow forging provided by the invention has the following technical effects:

the supporting mechanism is sleeved at the end part of the core rod, the heating mechanism is close to the steel forging, when the steel forging is drawn out, the heating mechanism is used for heating the end face of the steel forging, namely, the temperature of the steel forging is compensated, in the drawing process, due to the gravity of the heating device for forging the hollow forging, the heating device for forging the whole set of hollow forging cannot rotate along with the rotation of the core rod, and the temperature drop of the steel forging in the forging process can be effectively inhibited by means of online heating and temperature compensation of the heating device for forging the hollow forging, so that cracks are inhibited; the problem of current forging heat preservation mode all be difficult to effectual steel forging's to the end of plug inside and outside edges and corners department keep warm, cause the crackle to appear in the inside and outside edges and corners of steel forging is solved. Meanwhile, the forging time of the steel forging can be prolonged, the forging fire number and the clearing frequency of the drawn steel forging are greatly reduced, and the forging quality is improved.

Drawings

FIG. 1 is a schematic configuration view of a heating apparatus for forging a hollow forging according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a heating apparatus for forging a hollow forging according to an embodiment of the present invention;

FIG. 3 is a schematic front view of the support mechanism of the present invention;

FIG. 4 is a schematic side view of a support mechanism of an embodiment of the present invention;

FIG. 5 is a schematic structural view of a heating mechanism of an embodiment of the present invention;

FIG. 6 is a schematic side view of a heating mechanism of an embodiment of the present invention;

FIG. 7 is a schematic side view showing a state of use of a heating apparatus for forging a hollow forging according to the embodiment of the present invention.

Description of the labeling:

1-core rod, 11-steel forging, 2-supporting mechanism, 21-supporting plate, 211-first through hole, 212-notch groove, 213-second through hole, 214-second connecting plate, 215-first connecting piece, 216-fourth connecting piece, 217-connecting arm, 3-heating mechanism, 311-first hose, 312-second hose, 32-first connecting pipe, 321-first valve, 33-second connecting pipe, 331-second valve, 34-heating end, 36-third connecting piece, 37-bolt, 41-first annular pipe, 411-natural gas inlet, 412-natural gas interface, 42-second annular pipe, 421-combustion-supporting air inlet, 422-combustion-supporting air interface and 5-positioning annular.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like, which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred devices or elements 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.

Also, in the drawings, the Z-axis represents a vertical, i.e., up-down position, and a positive direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents up, and a negative direction of the Z-axis (i.e., a direction opposite to the positive direction of the Z-axis) represents down;

in the drawings, the X-axis represents the longitudinal direction of the horizontal plane, perpendicular to the Z-axis, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) represents the front side, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the rear side;

in the drawings, Y represents a horizontal direction, while being perpendicular to the Z-axis and the X-axis, and a positive direction of the Y-axis (i.e., an arrow direction of the Y-axis) represents a left side, and a negative direction of the Y-axis (i.e., a direction opposite to the positive direction of the Y-axis) represents a right side;

the plane formed by the X axis and the Z axis is a vertical plane.

It should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 and 7, the present embodiment provides a heating device for forging a hollow forging, including:

the supporting mechanism 2 is provided with a first through hole 211; and

the plurality of heating mechanisms 3 are connected with the supporting mechanism 2, the plurality of heating mechanisms 3 are arranged around the first through hole 211, the heating ends 34 of the plurality of heating mechanisms 3 are arranged towards one side of the supporting mechanism 2, and the first through hole 211 penetrates through one side of the supporting mechanism 2.

Here, the heating device for forging a hollow forging may be configured to heat an end portion of the steel forging 11 sleeved outside the mandrel 1, the supporting mechanism 2 is sleeved on the end portion of the mandrel 1 through the first through hole 211, the supporting mechanism 2 is adapted to move relative to the mandrel 1, such as to rotate relative to the mandrel 1 and move along an axial direction of the mandrel 1, the heating mechanism 3 is disposed adjacent to the steel forging 11, and the heating mechanism 3 is configured to heat the end portion of the steel forging 11. The heating can be conducted to supplement the temperature of the end face of the steel forging, and can also be conducted to further increase the temperature.

It should be noted that the steel forging may be a stainless steel forging, carbon structural steel, low-alloy high-strength structural steel, high-quality carbon structural steel, alloy structural steel, and other special-purpose steel.

The supporting machine 2 is sleeved at the end part of the mandrel 1, the heating mechanism 3 is close to the steel forging 11, when the steel forging 11 is drawn out, the heating mechanism 2 is used for heating the end face of the steel forging 11, namely, the temperature compensation is carried out on the steel forging 11, in the drawing-out process, due to the gravity of the heating device for forging of the hollow forging, the heating device for forging of the whole set of hollow forging cannot rotate along with the rotation of the mandrel 1, and the temperature drop of the steel forging 11 in the forging process can be effectively inhibited by means of online heating and temperature compensation by the heating device for forging of the hollow forging, so that the generation of cracks is inhibited; the problem of current forging heat preservation mode all be difficult to effectual steel forging's to the end of stainless steel hollow core stick inside and outside edges and corners keep warm, cause the inside and outside edges and corners of steel forging to appear crackle is solved. Meanwhile, the forging time of the steel forging can be prolonged, the forging fire number and the clearing frequency of the drawn steel forging are greatly reduced, and the forging quality is improved.

Referring to fig. 1 and 7, preferably, a plurality of heating mechanisms 3 are arranged around the first through hole 211, the heating mechanisms 3 are burners, the heating mechanisms 3 are hinged to the supporting mechanism 2, and the heating ends 34 of the heating mechanisms 3 are adapted to swing along the radial direction of the first through hole 211.

Here, when the heating device for forging a hollow forging is sleeved outside the mandrel bar 1 to heat the steel forging 11, the heating ends 34 of the plurality of heating mechanisms 3 are arranged toward the steel forging 11, and the heating ends 34 of the heating mechanisms 3 are adapted to swing along the radial direction of the first through holes 211, that is, the heating ends 34 of the heating mechanisms 3 are adapted to swing along the radial direction of the mandrel bar 1;

here, by adjusting the angle of the heating end 34 of the heating mechanism 3 and further changing the size of the heating region of the heating mechanism 3, even if the stainless steel forging 11 is pulled out, the temperature can be effectively compensated by adjusting the angle of the heating end 34.

Referring to fig. 1 to 3, preferably, the plurality of heating mechanisms 3 are arranged in a first annular group and a second annular group, the plurality of heating mechanisms 3 of the first annular group being disposed around the first through hole 211, and the plurality of heating mechanisms 3 of the second annular group being disposed around the first annular group.

Here, the plurality of heating mechanisms 3 of the first annular group are used for heating one end of the inner hole of the steel forging 11, and the plurality of heating mechanisms 3 of the second annular group are used for heating one end of the outer surface of the steel forging 11;

here, two groups of heating mechanisms 3, namely a first annular group and a second annular group, are arranged, and one end of the inner control of the steel forging 11 is heated and temperature-compensated through the plurality of heating mechanisms 3 of the first annular group, namely the inner edges and corners of the steel forging 11 are heated and temperature-compensated; one end of the outer surface of the temperature compensation steel forging 11 is heated through the plurality of heating mechanisms 3 of the second annular group, namely the outer edge of the temperature compensation steel forging 11 is heated, and therefore a comprehensive heating and temperature compensation effect on the end face of the steel forging 11 is guaranteed.

Referring to fig. 2 and 5, preferably, the heating device for forging a hollow forging further includes a gas pipeline and a combustion-supporting air pipeline, the gas pipeline and the combustion-supporting air pipeline are respectively disposed at the supporting mechanism 2, the gas pipeline is used for being respectively communicated with the plurality of heating mechanisms 3, the combustion-supporting air pipeline is used for being respectively communicated with the plurality of heating mechanisms 3, the gas pipeline is connected with each heating mechanism 3 through a first hose 311, and the combustion-supporting air pipeline is connected with each heating mechanism 3 through a second hose 312.

Here, provide the gas to a plurality of heating mechanism 3 simultaneously through the gas pipeline, provide combustion-supporting wind to a plurality of heating mechanism 3 simultaneously through combustion-supporting wind pipeline, it is more convenient. Meanwhile, the first hose 311 and the second hose 312 ensure that the heating mechanism 3 can be subjected to angle adjustment and cannot be limited by a gas pipeline and a combustion-supporting air pipeline.

Referring to fig. 2 and 5, preferably, the gas pipeline includes a first annular pipe 41 and a plurality of first connection pipes 32, the first annular pipe 41 is connected with a natural gas source, the first annular pipe 41 is connected with each first connection pipe 32, and the first connection pipes 32 are connected with first hoses 311 in a one-to-one correspondence manner;

the combustion-supporting air pipeline comprises a second annular pipe 42 and a plurality of second connecting pipes 33, the second annular pipe 42 is connected with the blower, the second annular pipe 42 is connected with each second connecting pipe 33, and the second connecting pipes 33 are correspondingly connected with the second hoses 312 one by one;

the diameter of the first annular pipe 41 is smaller than that of the second annular pipe 42, the first connection pipe 32 is disposed in parallel with the second connection pipe 33, and the first hose 311 is disposed to cross the second hose 312. Wherein the crossing comprises a perpendicular to non-perpendicular state.

Here, the first annular pipe 41 is connected to a natural gas source, for example, the first annular pipe may be connected to a natural gas tank or an external gas pipe.

It can be understood that the first annular pipe 41 may be communicated with a natural gas inlet 411 and a plurality of natural gas ports 412, one natural gas port 412 is respectively connected with one first connecting pipe 32, and the natural gas inlet 411 is connected with a natural gas tank; the second annular pipe 42 is communicated with a combustion-supporting air inlet 421 and a plurality of combustion-supporting air interfaces 422, one combustion-supporting air interface 422 is respectively connected with one combustion-supporting air connecting pipe 33, and the combustion-supporting air inlet 421 is connected with the blower.

Here, one end of the first connection pipe 32 is connected to the heating mechanism 3 through a first hose 311, and the other end thereof may be connected to the natural gas port 411 through a hose or a bellows; one end of the second connection pipe 33 is connected to the heating means 3 through a second hose 312, and the other end thereof may be connected to the combustion air port 421 through a hose or a bellows. I.e. to ensure that the heating means 3 can be adjusted over a wider range of angles.

Referring to fig. 5 and 6, preferably, the first connection pipe 32 is provided with a needle valve 321, and the second connection pipe 33 is provided with a butterfly valve 331, the needle valve 321 for regulating a flow rate of the first connection pipe 32, and the butterfly valve 331 for regulating a flow rate of the second connection pipe 33.

The needle valve 321 is disposed on the first connecting pipe 32, and because the needle valve 321 has the best flow rate adjustability, high adjustment accuracy, and good inner sealing performance, it is a good choice for natural gas, which is a toxic and flammable gas. The butterfly valve 331 is provided in the second connection pipe 33, and the butterfly valve 331 is inexpensive, has a minimum number of installation positions, is quickly opened and closed, has a small fluid resistance, and is liable to leak internally, but since the combustion air flows through the second connection pipe 33, it does not matter if a part of the combustion air leaks.

Referring to fig. 1 to 7, preferably, the supporting mechanism 2 includes two plate-shaped members 21 arranged at intervals and a plurality of fourth connecting members 216, the fourth connecting members 216 are in a lacing wire structure, so that the fourth connecting members and the two plate-shaped members 21 form a frame structure, the space is wide, the weight is light, the two supporting plates 21 are connected by the plurality of fourth connecting members 216, and the plate-shaped members 21 are provided with first through holes 211.

The plate surface of one plate-shaped member 21 is provided with a plurality of second through holes 213, the heating mechanisms 3 are burners, each heating mechanism 3 is inserted into one second through hole 213 in a one-to-one correspondence manner, and the heating end 34 of each heating mechanism 3 extends out of the outer plate surface of one plate-shaped member 21.

Here, the mandrel bar 1 can be inserted into the first through hole 211, and the mandrel bar 1 is in clearance fit with the first through hole 211, so that the heating device for forging the hollow forging can move along the axial direction of the mandrel bar 1;

here, two plate-like pieces 21 are sleeved on the mandrel 1 through the first through hole, and because the first through hole 211 is in clearance fit with the mandrel 1, it is ensured that the supporting mechanism 2 can drive the heating mechanism 3 to rotate or move along the axial direction of the mandrel 1, and particularly, it is important to ensure that the axial direction of the mandrel 1 moves, and because of the elongation of the steel forging 11, only if it is ensured that the heating mechanism 3 can move towards the steel forging 11, the heating end 34 of the heating mechanism 3 can always keep a proper distance from the steel forging 11, and the heating and temperature-supplementing effects are better.

Referring to fig. 1, preferably, the second through holes 213 are spaced apart from the heating mechanism 3 inserted therein, the supporting mechanism 2 further includes a plurality of second connecting plates 214, the second connecting plates 214 are connected to one plate-shaped member 21, the second connecting plates 214 protrude from the plate surface of one plate-shaped member 21, the heating mechanism 3 is hinged to the second connecting plates 214, and the heating mechanism 3 is adapted to swing with respect to the second through holes 213 inserted therein;

the heating mechanism 3 is positioned between the two support plates 21, one side of the heating mechanism 3 is provided with a third connecting piece 36, and the heating mechanism 3 is rotatably connected with the second connecting plate 214 through the third connecting piece 36 so as to be suitable for adjusting the angle of the heating end 34;

here, the heating mechanism 3 is rotatably connected to the second connecting plate 214 through the third connecting member 36 to adjust the angle of the temperature transmitting pipe 34, it is understood that the heating mechanism 3 can be stopped at any angle compared to the second connecting plate 214, and thus the inclination angle of the heating end 34 can be adjusted;

the third connecting piece 36 and the second connecting plate 214 can be rotatably connected through a bolt 37, so that the structure is simple, and the instant stop of the temperature conveying pipe 34 can be realized, wherein the instant stop means that the heating end 34 can be angularly adjusted and stopped at a certain angle.

Referring to fig. 5 and 4, preferably, each heating mechanism 3 is provided with two third connecting members 36, and a corresponding two second connecting plates 214 are arranged outside each corresponding second through hole 213 to ensure the strength of the connecting structure;

the third connecting member 36 and the second connecting plate 214 may be plate members, which can reduce the occupied space and weight while ensuring an effective connection.

Referring to fig. 1 to 7, preferably, the supporting mechanism 2 further includes a positioning mechanism, the positioning mechanism includes a plurality of connecting arms 217 and a positioning ring 5, the connecting arms 217 are connected to the outer plate surface of one plate-shaped member 21, the positioning ring 5 is disposed outside the one plate-shaped member 21, and the positioning ring 5 is connected to the plurality of connecting arms 217.

Here, the locating ring 5 is located the foremost end of the heating device for forging of the whole hollow forging, in the process of drawing out the steel forging 11 of the mandrel 1, the end face of the steel forging 11 is in contact with the locating ring 5, along with the drawing out of the steel forging 11, the heating device for forging of the hollow forging is pushed to slide on the mandrel 1, the locating ring 5 is made to be always in contact with the steel forging 11, the locating ring 5 is made to be always in contact with the end face of the steel forging 11, and it is guaranteed that the heating end 34 of the heating mechanism 3 is always kept a good distance from the steel forging 11.

Here, the plurality of heating mechanisms 3 are arranged at the plate surface of the one plate-like member 21 in a first annular group and a second annular group, the plurality of heating mechanisms 3 of the first annular group being provided around the first through hole 211, the plurality of heating mechanisms 3 of the second annular group being provided around the first annular group; the first and second annular pipes 41 and 42 are disposed between the two plate members 21, and the two plate members 21 may be circular plates;

the first circular pipe 41 may be directly connected to the plate member 21 at the rear end, and the natural gas inlet 411 may be disposed rearward through a predetermined hole of the support plate 21 at the rear end, so that the natural gas inlet 411 and the combustion supporting air inlet 421 are not crowded. The second annular pipe 42 may be connected to the plate member 21 at the rear end by a plurality of first connectors 215, the second annular pipe 42 being located at the front end of the first annular pipe 41.

Referring to fig. 1, preferably, the edge of the plate-shaped member 21 is opened with at least two notched grooves 212 for lifting.

Through setting up breach groove 212, provide a impetus of hoist, can guarantee the hoist of heating device, and then guarantee to embolia supporting mechanism 2 on plug 1.

In addition, the embodiment also provides forging equipment which comprises the heating device for forging the hollow forged piece.

Since the technical improvement and the technical effect of the forging apparatus are the same as those of the heating device for forging a hollow forged piece, the technical effect of the forging apparatus will not be described in detail.

The forging equipment further comprises a core rod 1, the steel forging 11 is sleeved outside the core rod 1, the core rod 1 is inserted into the first through hole 211, the core rod 1 is in clearance fit with the first through hole 211, through the clearance fit, it is guaranteed that the heating device for forging the hollow forging can move along the axial direction of the core rod 1, and the heating device for forging the hollow forging is used for heating the end portion of the steel forging 11.

It should be noted that the above "disposed" and "disposed" include various connection manners, such as fixed connection, detachable connection, and the like.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.