CN110468272B - Large-scale heat treatment furnace with movable variable volume - Google Patents
Large-scale heat treatment furnace with movable variable volume Download PDFInfo
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- CN110468272B CN110468272B CN201910817856.0A CN201910817856A CN110468272B CN 110468272 B CN110468272 B CN 110468272B CN 201910817856 A CN201910817856 A CN 201910817856A CN 110468272 B CN110468272 B CN 110468272B
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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Abstract
The invention relates to a large heat treatment furnace with movable variable capacity, which comprises a furnace wall plate, a box beam, two rails and a furnace bottom bearing structure; the furnace wall plate is formed by assembling a plurality of furnace wall plate modules in a detachable connection mode, and the number of the furnace wall plate modules can be adjusted according to the size of a component to be processed so as to change the volume of the furnace chamber; the furnace wall plate module is vertically arranged on the box beam, and the box beam is formed by assembling a plurality of box beam modules in a detachable connection mode; the right box-shaped beam and the left box-shaped beam are embedded with traveling mechanisms which can travel along the track to drive the whole furnace body to move; the furnace bottom bearing structure is arranged between the two rails, a component to be processed is placed on the furnace bottom bearing platform, and the furnace body can move to the position above the furnace bottom bearing structure to enable the component to be located in the furnace cavity. According to the invention, after the furnace door inserting plate is taken off, the furnace body can be translated to one end of the hearth on the track, so that large-scale components can conveniently enter and exit the furnace, and the impact damage to the furnace body is avoided.
Description
Technical Field
The invention relates to the technical field of heat treatment equipment, in particular to a variable-volume movable large heat treatment furnace.
Background
In industrial production, a plurality of methods for eliminating stress on a welding seam of a component are available, but the technology is not mature, the heat treatment method is widely used, common heat treatment furnaces are all in a fixed type or a trolley type, the heat treatment method is not suitable for heat treatment of large components, and when the large components are subjected to heat treatment in the fixed type or trolley type heat treatment furnaces, hoisting equipment, hoisting height and hoisting radius of the large components in and out of the furnaces are limited to a certain degree. In order to reduce the hoisting height and the hoisting radius, smaller hoisting equipment is selected, and heat treatment furnaces with different volumes are selected for different components to reduce energy consumption, so that higher requirements on capacity change and mobility of the heat treatment furnaces are provided.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a variable-volume movable large-scale heat treatment furnace, which can meet the functions of variable volume and movement, reduce energy consumption and save cost, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a variable-capacity movable large heat treatment furnace comprises furnace wall plates positioned on the left side, the right side and the rear side and a furnace top cover arranged above three furnace wall plates, wherein the three furnace wall plates and the furnace top cover jointly form a furnace body of the heat treatment furnace; each furnace wall plate module comprises two upright posts and a furnace wall inserting plate which is detachably arranged between the two upright posts;
the heat treatment furnace also comprises a box beam arranged at the bottom of the furnace wall plate, an upright post of the furnace wall plate module is vertically arranged on the box beam, the box beam is formed by assembling a plurality of box beam modules in a detachable connection mode, and the number of the box beam modules is correspondingly adjusted according to the adjustment of the number of the furnace wall plate modules so as to meet the installation requirement of the furnace wall plate;
the heat treatment furnace also comprises two parallel rails, and traveling mechanisms are embedded in the right box-shaped beam and the left box-shaped beam and can travel along the rails to drive the whole furnace body to move;
the heat treatment furnace also comprises a furnace bottom bearing structure arranged between the two rails, and the furnace bottom bearing structure comprises a furnace bottom bearing platform, a furnace bottom heat-insulating layer and a furnace bottom steel box plate which are sequentially paved from top to bottom; the component to be processed is placed on the furnace bottom bearing platform, and the furnace body can move to the position above the furnace bottom bearing structure to enable the component to be located in the furnace cavity.
In the scheme, the furnace wall inserting plate is of a channel steel frame structure and comprises two channel steels with opposite notches, outer side angle steels are arranged inside the channel steels close to the outer sides and connected with the two channel steels, and rain-proof plates are arranged on the outer surfaces of the outer side angle steels; the inside two channel-section steels of inboard bugle steel connection of leaning on the inboard of installing of channel-section steel, lay crashproof steel mesh wall on the inboard bugle steel, the welding has two inboard bugle steels to carry out the compaction on the crashproof steel mesh wall, and oven heat preservation cotton is laid on two inboard bugle steel surfaces.
In the scheme, the upright column is a square tube, and a hanging piece is welded on the outer side of the square tube; round steel is welded on the left side and the right side of the outer surface of the furnace wall inserting plate and matched with the hanging pieces on the stand columns to form a wall hanging structure; and the adjacent two upright posts are fastened by bolts through tensioning pieces so as to realize the wall profile splicing of two adjacent furnace wall plate modules. The heat preservation cotton is arranged on the inner surface of the upright post of the assembled furnace wall plate and is tightly combined with the furnace wall heat preservation cotton on the furnace wall inserting plate to ensure the heat preservation effect, so that the heat leakage is prevented from causing the failure of the heat treatment process.
In the scheme, the heat insulation cotton in the furnace wall plate is provided with the electric heating belt, and the electric heating belt is fixed on the heat insulation cotton through ceramic nails; the installation range of the electric heating belt on the wall plate of the three-face furnace is as follows: the furnace wall is arranged from the lower part of the furnace wall to the middle upper part of the furnace wall, and the top is not arranged, so that the thermal ascending principle is followed; the arrangement principle of the electric heating belt is as follows: the four corners are dense, the middle is thin, the near-high-far-low principle of heat radiation is satisfied, and the bottom is uniform; the electric heating belts are controlled in groups by adopting a star-shaped wiring method, namely a branch control circuit mode of firstly controlling the bottom, then four corners and then controlling the middle.
In the scheme, the joints of the box-type beam modules are provided with the mortise-tenon joints, and the mortise-tenon joints of the two groups of box-type beam modules are wedged tightly through the pins after being aligned.
In the above scheme, the two ends of the rear side box-shaped beam are respectively provided with the mortise and tenon interfaces, the rear ends of the right side box-shaped beam and the left side box-shaped beam are respectively provided with the matched mortise and tenon interfaces, and the two ends of the rear side box-shaped beam are respectively connected with the right side box-shaped beam and the left side box-shaped beam in a detachable manner through the mortise and tenon interfaces.
In the scheme, the heat treatment furnace also comprises a furnace door, wherein the furnace door comprises a plurality of inserting plates, and the furnace door inserting plates are vertically placed on a furnace door frame in a furnace opening state; the middle lower part of the furnace door is provided with an electric heating belt.
In the scheme, the rear end of the furnace top cover is formed by splicing a plurality of rear cover modules, and is fastened and connected with the upright posts of the three-sided furnace wall plate through bolts, so that the rear end of the furnace top cover is convenient to disassemble; the front end of the furnace top cover is hinged with an openable movable top cover, so that the furnace door is convenient to disassemble and assemble; the furnace top cover is characterized in that a steel plate is mounted on the inner surface of the furnace top cover, heat insulation cotton is fixed on the steel plate, and the surface of the heat insulation cotton is compacted through a flat steel bar of which the surface is welded with a bent round steel claw. The heat-insulating cotton is prevented from falling off due to high temperature or furnace body operation vibration, and a furnace top cover steel structure body is deformed and leaks air, so that the heat-insulating effect of the furnace body is unbalanced, and the heat treatment is invalid.
In the scheme, a gap is reserved between the edge of the furnace bottom bearing structure and the furnace wall plate heat insulation cotton, so that the furnace wall heat insulation cotton is prevented from being damaged by friction when the furnace body moves; the elevation of the upper surface of the furnace bottom heat-insulating layer exceeds the elevation of the tail end below the furnace wall heat-insulating cotton by more than 50mm, and after the furnace body moves in place, the heat insulation is completed by arranging asbestos in the gap in an auxiliary sealing manner. The asbestos is prevented from collapsing and leaking in the heating process of the furnace body by the auxiliary seal to generate a thermal deformation effect on the box-shaped beam, so that the furnace body is deformed and damaged.
In the scheme, the furnace bottom steel box plate comprises a plurality of box-shaped base plates which are arranged side by side from left to right, adjacent box-shaped base plates are connected in a mortise-tenon insertion mode, and transverse and longitudinal vertical ribs in the box-shaped base plates are uniformly distributed in a groined shape; the furnace bottom heat-insulating layer is laid on the furnace bottom steel box plate, and an electric heating belt is laid on the furnace bottom heat-insulating layer; the furnace bottom bearing platform is a frame platform structure which is formed by welding I-shaped steel longitudinally and equidistantly paved on a furnace bottom heat insulation layer and square tubes transversely and equidistantly arranged on the I-shaped steel into a whole.
The invention has the beneficial effects that:
1. after the furnace door inserting plate is taken off, the furnace body can be translated to one end of the hearth on the track, so that large-scale components can conveniently enter and exit the furnace, and the furnace body is prevented from being damaged by impact. The furnace body, the furnace bottom and the bearing rail beam are all modular, can be randomly combined into heat treatment furnaces with different volumes, are simple to disassemble and easy to pack and transport, and improve the recycling rate.
2. The furnace body of the heat treatment furnace is movable, 4 traveling motor wheel sets control the opening and closing of the furnace body, the limitations of hoisting height and hoisting radius of auxiliary hoisting equipment are reduced, and smaller hoisting equipment is selected.
3. According to the invention, the heat treatment furnace body stand column and the furnace wall inserting plate are arranged in an inserting mode, and one end of the bearing box-shaped beams at two sides is in a tenon-and-mortise structure mode, so that the heat treatment furnace is convenient to combine, disassemble, pack and transport at will, and the recycling rate is improved.
4. The electric heating strips are controlled in groups, a star-shaped wiring method is adopted, each furnace wall plate is provided with an external power supply circuit, and the problem of random splicing of the circuit groups is solved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a perspective view of a large heat treatment furnace of the present invention with a movable variable volume;
FIG. 2 is a side view of the heat treatment furnace shown in FIG. 1;
FIG. 3 is a front view of the heat treatment furnace shown in FIG. 1;
FIG. 4 is a top view of the structure of the furnace wall inserting plate and the vertical column of the large heat treatment furnace with movable volume change of the invention;
FIG. 5 is an exploded view of right/left box girders of a large heat treatment furnace of the present invention with variable capacity and movable type;
FIG. 6 is an assembled view of FIG. 5;
FIG. 7 is a schematic view showing the structure of three box beams of the large heat treatment furnace of the present invention with variable capacity and movable type;
in the figure: 10. a furnace wall panel; 11. a box beam; 111. a right box beam; 112. a left box beam; 113. a rear side box beam; 12. a column; 121. hanging parts; 13. a furnace wall inserting plate; 131. channel steel; 132. outer angle steel; 133. a flashing board; 134. a first angle steel on the inner side; 135. an anti-collision steel net wall; 136. a second angle steel on the inner side; 137. furnace wall heat preservation cotton; 138. round steel; 139. a tension member; 14. a column positioning groove; 15. mortise and tenon interfaces; 16. a vent hole; 17. a bolt; 20. a traveling mechanism; 30. a furnace roof; 31. a movable top cover; 32. a tensioning mechanism; 33. a furnace top heat dissipation hole; 40. a furnace door; 41. inserting plates; 42. an upper opening of the furnace body; 50. a furnace bottom load bearing structure; 51. a furnace bottom bearing platform; 52. a furnace bottom heat-insulating layer; 53. a furnace bottom steel box plate; 54. a sand-bonded stone cushion layer; 55. a primary soil layer; 60. a track; 61. a rail bearing beam; 62. an independent foundation cap; 63. an independent foundation pad layer; 64. and (6) a vehicle bumper.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the variable capacity movable large heat treatment furnace according to a preferred embodiment of the present invention includes furnace wall panels 10 located at left, right and rear sides and a furnace roof 30 installed above three furnace wall panels 10, the left and right furnace wall panels 10 are symmetrically arranged, and the three furnace wall panels 10 and the furnace roof 30 together constitute a furnace body of the heat treatment furnace. The furnace wall panel 10 is assembled from a number of furnace wall panel modules in a detachable connection, the number of which can be adjusted to change the volume of the furnace chamber according to the size of the component to be treated. Each furnace wall plate module comprises two upright posts 12 and a furnace wall inserting plate 13 which is detachably arranged between the two upright posts 12. The bottom of the furnace wall plate 10 is provided with a box beam 11, and the upright posts 12 of the furnace wall plate module are vertically arranged on the box beam 11. The box beam 11 is formed by assembling a plurality of box beam modules in a detachable connection mode, and the number of the box beam modules is correspondingly adjusted according to the adjustment of the number of the furnace wall plate modules so as to meet the installation requirement of the furnace wall plate 10.
As shown in fig. 4, two vertical pillars 12 and the furnace wall insert 13 therebetween form a furnace wall plate module, and the furnace volume can be adjusted by increasing or decreasing the number of the furnace wall plate modules according to the requirements of different components. The furnace wall inserting plate 13 is of a channel steel frame structure and comprises channel steel 131 with two notches arranged oppositely, outside angle steel 132 is installed near the outside inside the channel steel 131 to connect the two channel steel 131, a rain-proof plate 133 is installed on the outer surface of the outside angle steel 132, the rain-proof plate 133 adopts a galvanized sheet, the galvanized sheet adopts an overlap joint, an overlap joint form is pressed upwards to implement, and a joint is welded to achieve a rainproof effect. An inner side first angle steel 134 is arranged inside the channel steel 131 close to the inner side and connected with the two channel steels 131, an anti-collision steel mesh wall 135 is laid on the inner side first angle steel 134, an inner side second angle steel 136 is welded on the anti-collision steel mesh wall 135 for compaction, and furnace wall heat insulation cotton 137 is laid on the surface of the inner side second angle steel 136. The upright post 12 is a square tube, and a hanging piece 121 is welded on the outer side of the square tube; round steel 138 is welded on the left side and the right side of the outer surface of the furnace wall inserting plate 13 and matched with the hanging pieces 121 on the upright posts to form a wall hanging structure; and two adjacent upright columns 12 are fastened by bolts through tensioning pieces 139 so as to realize the wall shape surface splicing of two adjacent furnace wall plate modules. The heat insulation cotton is arranged on the inner surface of the upright post 12 of the assembled furnace wall plate and is tightly combined with the furnace wall heat insulation cotton 137 on the furnace wall inserting plate to ensure the heat insulation effect, and the heat leakage is prevented to cause the failure of the heat treatment process. The components of the furnace wall plate module are detachably connected, so that the furnace wall plate module is convenient to disassemble, pack, case and transport for repeated use, and is simple and convenient to assemble.
In this embodiment, square tubes of 200 × 14mm are used for the pillars 12, and the furnace wall insertion plates 13 are 3500mm × 2550mm × 200mm in size (width × height × thickness). 3 uniformly distributed inner first angle steels 134(L75 x6, length 3025mm) are welded on the inner surface of each furnace wall plate module, and the inner sides of the furnace wall plate modules are required to be flat. After the module group is assembled, the anti-collision steel net wall 135 is assembled and welded on the first inner side angle steel 134, then the second inner side angle steel 136(L40 x 4mm) @300 is uniformly compacted and welded along the longitudinal direction, and heat insulation cotton with the thickness of 150mm is paved on the outer surface of the second inner side angle steel 136 to form furnace wall heat insulation cotton 137. The outer surface of furnace wall board 10 installs the suitable outside angle steel 132 of interval (L40 × 4mm), installs flashing 133 on the outside angle steel 132, and flashing 133 adopts the thick galvanized sheet of 2mm, and the galvanized sheet adopts the overlap joint, thereby joint department adopts the welding to reach rain-proof effect. After the furnace wall heat insulation cotton 137 is installed, an electric heating belt is installed, and the electric heating belt is fixed on the heat insulation cotton through ceramic nails. And finally, drilling holes in the inlet and outlet lines of the binding posts of the furnace body according to the size of the electric heating belt, wherein each binding post must be sleeved with a ceramic insulating tube to prevent electric leakage, and the joint of each binding post and an external power line must be subjected to insulating treatment to ensure the safety of electricity consumption.
As shown in fig. 5-6, a plurality of column positioning grooves 14 are equidistantly formed in the upper end surface of the box beam 11 along the length direction, the columns 12 are inserted into the column positioning grooves 14, a steel plate with the thickness of 30mm x 260mm x 350mm is welded at the bottom of each column 12, and the steel plate is inserted into the column positioning grooves 14 during installation. The joints of the adjacent box-type beam modules are provided with mortise and tenon joints, and the mortise and tenon joints of the two groups of box-type beam modules are wedged tightly through the bolts 17 after being aligned. As shown in fig. 7, two ends of the rear box girder 113 are respectively provided with a mortise and tenon socket 15, the rear ends of the right box girder 111 and the left box girder 112 are respectively provided with a mortise and tenon socket 15, and two ends of the rear box girder 113 are respectively detachably connected with the right box girder 111 and the left box girder 112 through the mortise and tenon socket 15.
The heat treatment furnace further comprises two rails 60 arranged in parallel, and the rails 60 are parallel to the right side furnace wall plate 10 and the left side furnace wall plate 10 and perpendicular to the rear side furnace wall plate 10. The right box-shaped beam 111 and the left box-shaped beam 112 are both embedded with a traveling mechanism 20, and the traveling mechanism 20 can travel along the rail 60 to drive the whole furnace body to move. A rail bearing beam 61 is laid below the rail 60, an independent foundation bearing platform 62 is laid below the rail bearing beam 61, and an independent foundation cushion 63 is laid below the independent foundation bearing platform 62. The rail bearing beam 61 is welded H-shaped steel (H800: 400: 30: 20), the welded H-shaped steel is fixedly connected through bolts, welded angle steel inclined supports on two sides of the welded H-shaped steel are fixed, the lateral movement of the rail bearing beam 61 during use is eliminated, and the rail 60 is installed on the rail bearing beam 61. Reinforcing steel bars are uniformly distributed in the independent foundation bearing platform 62, and embedded parts are installed on the surface of the independent foundation bearing platform. The independent foundation pad 63 is original soil non-backfilled soil, and gravel with the thickness of 300mm is filled and tamped.
The heat treatment furnace also comprises a furnace bottom bearing structure 50 arranged between the two rails 60, wherein the furnace bottom bearing structure 50 comprises a furnace bottom bearing platform 51, a furnace bottom heat preservation layer 52, a furnace bottom steel box plate 53, a sand-bonded stone cushion layer 54 and an original soil layer 55 which are sequentially paved from top to bottom. The component to be processed is placed on the furnace bottom bearing platform 51, and the furnace body can move to the upper part of the furnace bottom bearing structure 50 under the driving of the walking mechanism 20, so that the component is positioned in the furnace cavity, and the heating is convenient. A 100mm gap is left between the edge of the furnace bottom bearing structure 50 and the furnace wall plate 10, so that the furnace wall heat insulation cotton 137 is prevented from being damaged by friction when the furnace body moves; when the furnace body moves in place, asbestos is arranged in the gap to be sealed in an auxiliary mode to finish heat preservation. The furnace bottom steel box plate 53 comprises a plurality of box-shaped base plates which are arranged side by side from left to right, the size of each box-shaped base plate is 6550mm and 2620mm, the thickness of each box-shaped base plate is 400mm, adjacent box-shaped base plates are connected in a mortise-tenon insertion mode, and transverse and longitudinal vertical ribs in each box-shaped base plate are uniformly distributed in a # -shape. The furnace bottom steel box plate 53 is laid on a bearing platform basic cushion layer (consisting of a bonded sand stone cushion layer 54 and an original soil layer 55), 3 layers of asbestos quilts (namely a furnace bottom heat-insulating layer 52) are laid, a gap of 100mm reserved on the periphery is sealed by the asbestos quilts to finish heat insulation, the peripheral sealing asbestos is removed when a heated part is discharged, a certain distance is kept between the heated part and a furnace body, and the furnace wall heat-insulating cotton 137 is prevented from being damaged by friction when the furnace body moves. An electric heating belt is laid on the bottom heat-insulating layer 52. The furnace bottom bearing platform 51 contacted with the heated part is welded into a whole by using I300I-shaped steel with the length of 1200mm, spreading 6 pieces of I300I-shaped steel on the furnace bottom insulating layer 52 at equal intervals in the longitudinal direction, and transversely arranging 200 x 14mm square tubes @500 x 500mm on the I300I-shaped steel.
The rear end of the furnace top cover 30 of the heat treatment furnace is formed by fixedly splicing a plurality of rear cover modules by staggered lap bolts, and is fixedly connected with the upright post 12 of the three-face furnace wallboard 10 by bolts, so that the rear end is convenient to detach. The length of the furnace top cover 30 is less than that of the right furnace wall plate 10, the openable movable top cover 31 is hinged at the front end (close to the direction of the furnace door) of the furnace top cover 30, the end part of the movable top cover 31 is provided with a tension mechanism 32, and when the movable top cover 31 is opened, the front end of the furnace top cover 30 forms a furnace body upper opening 42, so that the furnace door 40 can be conveniently disassembled and assembled. The inner surface of the furnace top cover 30 is a steel plate with the thickness of 6mm, and round steel 138 passes through the steel plate
The long 300mm is as fixed nail fixed mounting heat preservation cotton, and the flat bar (width 30mm) compaction that has crooked round steel 138 claws through the surface welding on the cotton surface of heat preservation, and the asbestos is by 3 layers or 4 layers of tiling layer numbers.
The furnace door 40 of the heat treatment furnace consists of 4 insertion plates 41 on the upper layer and the lower layer, and two insertion plates 41 are respectively welded on the upper end and the lower end of the outer surface of each insertion plate 41
Round steel 138, upper and lower 4 insertion plates 41 are stacked to form a whole oven door 40, and the whole oven door 40 extends out of the width direction of the oven door 40
The round steel 138 is positioned on the hanging lug of the vertical column of the oven door to form a wall-mounted structure. The furnace door inserting plate 41 is vertically placed in the state of opening the furnaceOn a door frame (not shown). An electric heating belt is arranged on the 3 inserting plates 41 positioned below the oven door 40.
The large heat treatment furnace with the movable variable capacity has the structure that the furnace body and the furnace bottom bearing structure 50 are separated, after the furnace body is moved away, a large member is hoisted to the furnace bottom bearing platform 51 by hoisting equipment, then the furnace body is opened above the member and is tightly attached to the furnace bottom bearing platform 51, the movable top cover 31 is opened, the furnace door 40 inserting plate 41 is hoisted, then the movable top cover 31 is closed, the vent hole 16 and the furnace top heat dissipation hole 33 are blocked, and the integral heat treatment of the member can be realized. After the heat treatment and heat preservation of the component are completed, the heat dissipation holes 33 on the top of the furnace and the asbestos quilt 16 in the four ventilation holes below the furnace body are opened firstly, after the temperature in the furnace is reduced to reach the standard, the movable top cover 31 is opened, the door sealing plate is extracted, the furnace body is opened to the parking area, and the component is lifted away.
Further optimize, in this embodiment, leave ventilation hole 16 below the trilateral stove wallboard 10, stove top lid 30 is opened has 4 furnace roof louvres 33 to adopt the cotton shutoff of keeping warm, rise, control through opening, closing ventilation hole 16 and furnace roof louvre 33 and rise, cool down the speed.
The running gear 20 comprises 2 motor wheel sets on two sides respectively, and the motor wheel sets are lower than the upper surface of the furnace bottom bearing structure 50. The upper plane of the track 60 is 600 mm lower than the upper plane of the bearing table foundation cushion layer, so that water drainage is facilitated. Underground soil layer buried structures are arranged below the upper plane of the rail bearing beam 61, and the rail 60 is arranged on the ground surface. The walking mechanism used by the invention is a low-speed motor, and the power is as follows: 4.5 kw; voltage: 380V; current: 11A; frequency: 50 Hz; rotating speed: 1400 rpm. And the anti-collision rubber buffers are additionally arranged at the two ends of the box beams 11 at the two sides, and no limit stops are required to be installed. The two ends of the rail 60 are respectively provided with a stop 64 and a limiter for controlling the safe running distance of the furnace body. The car bumper 64 is formed by using a steel plate with the thickness of 30mm as a baffle, a vertical rib plate is used for supporting behind the baffle, two steel plates are welded at the terminal of a track, and two car bumpers are welded at the terminals of two ends of the two tracks respectively to prevent the furnace body from derailing.
The furnace body volume is great, and its four corners is far away from the heated component, and for the inside heat energy of furnace body is balanced basically, when arranging the electric heating area, this region needs to encrypt and arranges, also can adjust through setting up thermal sensor feedback temperature value. According to the basic principle of thermal radiation, the electric heating belts are arranged in a mode that four corners are dense, the middle is thin, and the bottom is uniform. Paving the sand stones on the ground covered by the furnace body to tamp and lay the steel box plate 53 at the bottom of the furnace, paving the heat preservation asbestos 52 on the steel box plate at the bottom of the furnace, paving the heating belt on the asbestos, and laying the heating belt to reserve a gap to place the frame bearing tables 50 and 51 for combined welding. The middle and lower parts of the furnace body are provided with electric heating belts, and the upper part does not need to be arranged due to the heat ascending principle. The electric heating bands are controlled in groups, and a star-shaped wiring method is adopted, namely a branch control circuit mode of firstly controlling the bottom, then four corners and then controlling the middle is adopted.
Further preferably, in the embodiment, 1 part of vertical ladder is arranged on the outer surface of the furnace body and extends to the furnace top cover 30, and the vertical ladder is additionally provided with an annular protective guard. Three sides of the furnace body (except the surface of the furnace door 40) are provided with a safe walking board with the distance of 30800mm from the furnace top cover, a movable tripod is made of L75X6 angle steel, and the tripod and the walking board are detachable pieces.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A variable-capacity movable large heat treatment furnace comprises furnace wall plates positioned on the left side, the right side and the rear side and a furnace top cover arranged above three furnace wall plates, wherein the three furnace wall plates and the furnace top cover jointly form a furnace body of the heat treatment furnace; each furnace wall plate module comprises two upright posts and a furnace wall inserting plate which is detachably arranged between the two upright posts;
the heat treatment furnace also comprises a box beam arranged at the bottom of the furnace wall plate, an upright post of the furnace wall plate module is vertically arranged on the box beam, the box beam is formed by assembling a plurality of box beam modules in a detachable connection mode, and the number of the box beam modules is correspondingly adjusted according to the adjustment of the number of the furnace wall plate modules so as to meet the installation requirement of the furnace wall plate;
the heat treatment furnace also comprises two parallel rails, and traveling mechanisms are embedded in the right box-shaped beam and the left box-shaped beam and can travel along the rails to drive the whole furnace body to move;
the heat treatment furnace also comprises a furnace bottom bearing structure arranged between the two rails, and the furnace bottom bearing structure comprises a furnace bottom bearing platform, a furnace bottom heat-insulating layer and a furnace bottom steel box plate which are sequentially paved from top to bottom; the component to be processed is placed on the furnace bottom bearing platform, and the furnace body can move to the position above the furnace bottom bearing structure to enable the component to be located in the furnace cavity.
2. The large-scale variable-capacitance movable heat treatment furnace according to claim 1, wherein the furnace wall inserting plate is of a channel steel frame structure and comprises two channel steels with opposite notches, outer side angle steels are arranged inside the channel steels and close to the outer sides of the channel steels and connected with the two channel steels, and rain-proof plates are arranged on the outer surfaces of the outer side angle steels; the inside two channel-section steels of inboard bugle steel connection of leaning on the inboard of installing of channel-section steel, lay crashproof steel mesh wall on the inboard bugle steel, the welding has two inboard bugle steels to carry out the compaction on the crashproof steel mesh wall, and oven heat preservation cotton is laid on two inboard bugle steel surfaces.
3. The large-scale heat treatment furnace with the movable variable capacity according to claim 2, wherein the upright posts are square tubes, and hanging pieces are welded on the outer sides of the square tubes; round steel is welded on the left side and the right side of the outer surface of the furnace wall inserting plate and matched with the hanging pieces on the stand columns to form a wall hanging structure; and the adjacent two upright posts are fastened by bolts through tensioning pieces so as to realize the wall profile splicing of two adjacent furnace wall plate modules.
4. The large-scale heat treatment furnace with the movable variable capacity according to claim 2, wherein an electric heating belt is mounted on the heat insulation cotton in the furnace wall plate, and the electric heating belt is fixed on the heat insulation cotton through ceramic nails; the installation range of the electric heating belt on the wall plate of the three-face furnace is as follows: the furnace wall is arranged from the lower part of the furnace wall to the middle upper part of the furnace wall, and the top is not arranged, so that the thermal ascending principle is followed; the arrangement principle of the electric heating belt is as follows: the four corners are dense, the middle is thin, the near-high-far-low principle of heat radiation is satisfied, and the bottom is uniform; the electric heating belts are controlled in groups by adopting a star-shaped wiring method, namely a branch control circuit mode of firstly controlling the bottom, then four corners and then controlling the middle.
5. The large-scale heat treatment furnace with the movable variable capacity according to claim 1, wherein the joints of the box-type beam modules are provided with mortise and tenon joints, and the mortise and tenon joints of the two groups of box-type beam modules are aligned and then wedged tightly through pins.
6. The large heat treatment furnace with the movable variable capacity according to claim 1, wherein the two ends of the rear box girder are respectively provided with a mortise and tenon socket, the rear ends of the right box girder and the left box girder are respectively provided with a matched mortise and tenon socket, and the two ends of the rear box girder are respectively detachably connected with the right box girder and the left box girder through the mortise and tenon sockets.
7. The large-scale heat treatment furnace with the movable variable capacity according to claim 1, further comprising a furnace door, wherein the furnace door comprises a plurality of insertion plates, and the insertion plates are vertically placed on the furnace door frame in a furnace opening state; the middle lower part of the furnace door is provided with an electric heating belt.
8. The large-scale heat treatment furnace with the movable variable capacity according to claim 1, wherein the rear end of the furnace top cover is formed by splicing a plurality of rear cover modules and is fixedly connected with the upright posts of the three-sided furnace wall plate through bolts, so that the large-scale heat treatment furnace is convenient to disassemble; the front end of the furnace top cover is hinged with an openable movable top cover, so that the furnace door is convenient to disassemble and assemble; the furnace top cover is characterized in that a steel plate is mounted on the inner surface of the furnace top cover, heat insulation cotton is fixed on the steel plate, and the surface of the heat insulation cotton is compacted through a flat steel bar of which the surface is welded with a bent round steel claw.
9. The large-scale heat treatment furnace with the movable variable capacity according to claim 2, wherein a gap is left between the edge of the furnace bottom bearing structure and the furnace wall heat insulation cotton, so that the furnace wall heat insulation cotton is prevented from being damaged by friction when the furnace body moves; the elevation of the upper surface of the furnace bottom heat-insulating layer exceeds the elevation of the tail end below the furnace wall heat-insulating cotton by more than 50mm, and after the furnace body moves in place, the heat insulation is completed by arranging asbestos in the gap in an auxiliary sealing manner.
10. The large-scale variable-capacity movable heat treatment furnace according to claim 1, wherein the furnace bottom steel box plate comprises a plurality of box-type base plates which are arranged side by side from left to right, adjacent box-type base plates are connected in a mortise-tenon joint mode, and transverse and longitudinal vertical ribs in each box-type base plate are uniformly distributed in a groined shape; the furnace bottom heat-insulating layer is laid on the furnace bottom steel box plate, and an electric heating belt is laid on the furnace bottom heat-insulating layer; the furnace bottom bearing platform is a frame platform structure which is formed by welding I-shaped steel longitudinally and equidistantly paved on a furnace bottom heat insulation layer and square tubes transversely and equidistantly arranged on the I-shaped steel into a whole.
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