CN110608612B - Furnace top sealing structure of suspension type heat treatment furnace - Google Patents
Furnace top sealing structure of suspension type heat treatment furnace Download PDFInfo
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- CN110608612B CN110608612B CN201910836947.9A CN201910836947A CN110608612B CN 110608612 B CN110608612 B CN 110608612B CN 201910836947 A CN201910836947 A CN 201910836947A CN 110608612 B CN110608612 B CN 110608612B
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- stacking
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 239000000725 suspension Substances 0.000 title claims abstract description 17
- 238000007667 floating Methods 0.000 claims abstract description 51
- 241000251468 Actinopterygii Species 0.000 claims abstract description 48
- 241000405070 Percophidae Species 0.000 claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 3
- 239000000112 cooling gas Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 206010021198 ichthyosis Diseases 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/02—Crowns; Roofs
- F27D1/021—Suspended roofs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
A furnace top sealing structure of a suspension type heat treatment furnace. The device comprises a floating type fish plate, a cooling beam and a positioning pin; the cooling beam comprises an air collecting beam, a duckbill air spraying beam, a track and a hollow beam; the invention can keep enough straightness at room temperature or in a high-temperature working state. The floating type fish scale plate is used as a cover plate and is dragged on a track with enough straightness by the self weight of the fish scale plate, so that the purpose of inhibiting the overflow of furnace gas is achieved. Meanwhile, an air curtain is arranged on the upper part of the floating type fish plate, so that a small amount of overflowed furnace gas is isolated, and the working temperature of the accumulation conveying component above the floating type fish plate is always close to the ambient temperature. When the floating type fish plate is not supported by a rail outside the furnace, a locating pin is arranged on the suspender; by setting the proper positioning pin position, the floating type fish plate is in a front-end upward-tilting posture outside the furnace, so that the transition action of the weight of the floating type fish plate from the positioning pin to the rail in the process of feeding and discharging the workpiece into and out of the furnace is smooth.
Description
Technical Field
The invention belongs to the technical field of heat treatment equipment, and particularly relates to a furnace top sealing structure of a suspension type heat treatment furnace.
Background
At present, heat treatment of parts, particularly a large number of single workpieces with shapes suitable for hanging modes, is commonly carried out by adopting a hanging type heat treatment furnace as heat treatment equipment. The suspended heat treatment furnace has the advantages of high productivity, small heating deformation of workpieces, reliable operation and the like, so the suspended heat treatment furnace is widely applied to industries such as automobiles, railways, engineering machinery, war industry and the like. However, unlike other heat treatment furnaces, a long slit must be provided at the top of the furnace body in the suspended heat treatment furnace for stepwise periodic beat movement of the boom connected between the stacker trolley above the furnace body and the work piece. The long seam is adjacent to the high-temperature furnace chamber, so that the long seam expands and irregularly deforms after being heated, and the thermal expansion and deformation of the long seam are more obvious especially for a large-scale long heat treatment furnace with larger productivity.
The existing technical proposal for solving the problem is that the long seam is made wider, two sides are connected with a furnace top steel plate by adopting a section of heat-resistant cast iron and a section of heat-resistant cast iron by bolts, the distance between a fish scale plate arranged in the middle of a suspender and the top of a furnace body is larger, and enough gaps are designed to ensure that the long seam after thermal expansion can still pass through the suspender driven by the stacking trolley.
However, the problem brought by the scheme is that a great amount of furnace gas flowing upwards in the furnace overflows outwards along the gap between the long seam and the suspender, so that the temperature uniformity of the furnace chamber is poor, the energy consumption is high, meanwhile, the working environment of the accumulation conveyor chain system right above the long seam is overhigh due to the overflow of a great amount of furnace gas, the lubricating oil and the electric control system are easy to lose efficacy after long-term use at the temperature above 100 ℃, and the reliability of the production line is reduced as a result.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a roof sealing structure of a suspension heat treatment furnace.
In order to achieve the above purpose, the suspended heat treatment furnace in the top sealing structure of the suspended heat treatment furnace mainly comprises a circulating type stacking trolley track, a plurality of groups of stacking trolleys, a furnace body, at least one suspender and a positioning tail rod; the multiple groups of stacking trolleys are arranged on the circulating stacking trolley track in a mode of being capable of moving along the circulating stacking trolley track; the furnace body is positioned at a certain part below the circulating stacking trolley track, and a long seam is formed in the middle of the top surface along the moving direction of the stacking trolley; the upper ends of a plurality of suspenders or a suspender and a positioning tail rod are connected to a group of stacking trolleys, the lower ends are used for hanging workpieces, and when the workpieces pass through a furnace body, the middle parts of the suspender and the positioning tail rod can pass through a long seam; the furnace top sealing structure comprises a floating type fish plate, a cooling beam and a positioning pin; the cooling beam comprises an air collecting beam, a duckbill air spraying beam, two rails and two hollow beams; the lower ends of the two hollow beams are respectively fixed at the positions on the top surface of the furnace body, which are positioned at the two sides of the long seam, and cooling gas or cooling water is introduced into the two hollow beams; the two rails are respectively fixed at the inner side parts of the top surfaces of the two hollow beams; the duckbill air-jet beam is arranged on the upper side of a hollow beam, cooling gas is introduced into the duckbill air-jet beam, and a nozzle on the duckbill air-jet beam faces the suspender and is higher than the track; the wind collecting beam is arranged on the upper side of the other hollow beam, and the wind suction inlet on the wind collecting beam faces the suspender and is higher than the track; the middle part of each suspender is respectively provided with a locating pin in a penetrating way along the transverse direction, and two ends of the locating pin protrude outside the suspender; when a suspender is arranged on each group of stacking trolleys, the upper end of the suspender is connected with the front middle part of the stacking trolley, the rear part of the stacking trolley is connected with a positioning tail rod, and the suspension height of the lower end of the positioning tail rod is lower than the length of the suspender positioned above the positioning pin; when a plurality of hanging rods are arranged on each group of stacking trolleys, the hanging rods are arranged at intervals along the front-back direction, and the heights of the positioning pins on the hanging rods are gradually reduced from front to back; each floating type fish plate is provided with at least one opening penetrating through the upper part of a corresponding suspender arranged on a group of stacking trolleys, so that the floating type fish plate can move up and down on the suspender at a position above the positioning pin; when a suspender is arranged, the rear part of the floating type fish plate is connected with the lower end of the positioning tail rod.
The elevation of the track is higher than that of the locating pin.
The minimum distance between the air suction inlet on the air collecting beam and the nozzle on the duckbill air spraying beam and the track is larger than the thickness of the floating type fish scale plate.
The front end part of the floating type fish plate is in a bevel shape with the lower part inclined downwards from front to back, and the rear end part is in a bevel shape with the upper part inclined upwards from back to front; the width of the floating type fish plate is smaller than the distance between the wind collecting beam and the duckbill wind spraying beam part and is larger than the maximum distance between the two rails.
The surface of the hollow beam is provided with a heat insulation layer made of heat insulation materials.
The furnace top sealing structure of the suspension type heat treatment furnace has the following beneficial effects:
the high-temperature linear guide device can keep enough linearity at room temperature or in a high-temperature working state. The floating type fish scale plate is used as a cover plate and is dragged on a track with enough straightness by means of self weight, so that the purpose of inhibiting the overflow of furnace gas is achieved. Meanwhile, the air curtain is arranged at the upper part of the floating type fish plate, so that a small amount of overflowed furnace gas is isolated, and the working temperature of the accumulation conveying component above the floating type fish plate is always close to the ambient temperature. Meanwhile, when the floating type fish plate is considered to have no track support outside the furnace, a locating pin is arranged on the suspender; by setting the proper positioning pin position, the floating type fish plate is in a front-end upward-tilting posture outside the furnace, so that the transition action of the weight of the floating type fish plate from the positioning pin to the rail in the process of feeding and discharging the workpiece into and out of the furnace can be ensured to be smooth.
Drawings
FIG. 1 is a cross-sectional view of a furnace body structure in a suspension type heat treatment furnace provided with a furnace top sealing structure according to the present invention.
FIG. 2 is a view AA in section in FIG. 1, wherein the left part is a schematic view of the inner state of the oven cavity, and the right part is a schematic view of the outer state of the oven cavity;
fig. 3 is an enlarged view of a partial structure in fig. 1.
Fig. 4 is an enlarged view of a part of the structure of the left part in fig. 2.
FIG. 5 is a diagram of an example of a floating pallet hanging scheme with one boom on each group of stacking trolleys.
Detailed Description
The furnace top sealing structure of the suspension type heat treatment furnace provided by the invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 5, the suspended heat treatment furnace in the top sealing structure of the suspended heat treatment furnace provided by the invention mainly comprises a circulating type stacking trolley track 6, a plurality of groups of stacking trolleys 1, a furnace body 7, at least one suspender 5 and a positioning tail rod 9; the multiple groups of stacking trolleys 1 are arranged on the circulating stacking trolley track 6 in a mode of being capable of moving along the circulating stacking trolley track 6; the furnace body 7 is positioned at a certain part below the circulating stacking trolley track 6, and a long slit 8 is formed in the middle of the top surface along the moving direction of the stacking trolley 1; the upper ends of a plurality of hanging rods 5 or a hanging rod 5 and a positioning tail rod 9 are connected to a group of stacking trolleys 1, the lower ends are used for hanging workpieces 2, and when the workpieces pass through a furnace body 7, the middle parts of the hanging rod 5 and the positioning tail rod 9 can pass through a long seam 8; the furnace top sealing structure comprises a floating type fish plate 3, a cooling beam 4 and a positioning pin 5.1; the cooling beam 4 comprises an air collecting beam 4.1, a duckbill air spraying beam 4.2, two rails 4.3 and two hollow beams 4.4; the lower ends of the two hollow beams 4.4 are respectively fixed at the positions on the top surface of the furnace body 7, which are positioned at the two sides of the long seam 8, and cooling gas or cooling water is introduced into the two hollow beams; the two rails 4.3 are respectively fixed at the inner side parts on the top surfaces of the two hollow beams 4.4; the duckbill air-jet beam 4.2 is arranged on the upper side of a hollow beam 4.4, cooling gas is introduced into the duckbill air-jet beam, and a nozzle on the duckbill air-jet beam faces the boom 5 and is higher than the track 4.3; the wind collecting beam 4.1 is arranged on the upper side of the other hollow beam 4.4, and the wind suction inlet on the wind collecting beam faces the hanging rod 5 and is higher than the track 4.3; the middle part of each suspender 5 is respectively provided with a locating pin 5.1 in a penetrating way along the transverse direction, and two ends of the locating pin 5.1 protrude outside the suspender 5; when one suspender 5 is arranged on each group of stacking trolleys 1, the upper end of the suspender 5 is connected with the front middle part of the stacking trolleys 1, the rear part of the stacking trolleys 1 is connected with a positioning tail rod 9, and the suspension height of the lower end of the positioning tail rod 9 is lower than the length of the suspender 5, which is positioned above the positioning pin 5.1; when a plurality of hanging rods 5 are arranged on each group of stacking trolleys 1, the hanging rods 5 are arranged at intervals along the front-back direction, and the heights of positioning pins 5.1 on the hanging rods 5 are gradually reduced from front to back; each floating type fish plate 3 is provided with at least one opening penetrating through the upper part of the corresponding suspender 5 arranged on the group of stacking trolleys 1, so that the floating type fish plate 3 can move up and down on the suspender 5 at a position above the positioning pin 5.1; when a boom 5 is provided, the rear part of the floating type fish plate 3 is connected with the lower end of the positioning tail rod 9.
The elevation of the track 4.3 is higher than that of the locating pin 5.1.
The minimum distance between the air suction inlet on the air collecting beam 4.1 and the nozzle on the duckbill air spraying beam 4.2 and the track 4.3 is larger than the thickness of the floating fish scale plate 3.
The front end part of the floating type fish plate 3 is in a bevel shape with the lower part inclined downwards from front to back, and the rear end part is in a bevel shape with the upper part inclined upwards from back to front; the width of the floating fish plate 3 is smaller than the distance between the wind collecting beam 4.1 and the upper part of the duckbill wind-spraying beam 4.2 and is larger than the maximum distance between the two rails 4.3.
The surface of the hollow beam 4.4 is provided with a heat insulation layer made of heat insulation materials.
The working principle of the furnace top sealing structure of the suspension type heat treatment furnace provided by the invention is explained as follows:
when the workpiece 2 is positioned outside the furnace body 7, the weight of the floating type fish plate 3 on each group of stacking trolleys 1 is borne by the positioning pins 5.1 or one positioning pin 5.1 and the positioning tail rod 9 on the plurality of hanging rods 5; when one hanging rod 5 is arranged, the hanging height of the lower end of the positioning tail rod 9 is lower than the length of the part, above the positioning pin 5.1, of the hanging rod 5, when a plurality of hanging rods 5 are arranged, the height of the positioning pin 5.1 on the hanging rods 5 is gradually reduced from front to back, so that the floating type fish plate 3 is in a state that the front end is high and the rear end is low, at the moment, the elevation of the front end of the floating type fish plate 3 is higher than the elevation of the track 4.3, and the elevation of the rear end is lower than the elevation of the track 4.3, so that a certain included angle is formed between the plane of the floating type fish plate 3 and the extension line of the track 4.3, and the right side part in the view of fig. 2;
when the workpiece 2 is driven by the stacking trolley 1 and the hanging rod 5 to enter the hearth of the furnace body 7 from the outside of the furnace body 7, the front end elevation is higher than that of the track 4.3, and under the dragging of the hanging rod 5 and the upper supporting effect of the rear end of the track 4.3, the floating type ichthyosis 3 floats up from front to back in sequence, so that the locating pin 5.1 is separated and finally the weight of the floating type ichthyosis 3 is completely borne on the two tracks 4.3, at the moment, the floating type ichthyosis 3 is in a horizontal posture, and the rear end part of the floating type ichthyosis 3 on the previous group of stacking trolley 1 is arranged in a ichthyosis shape under the stacking state.
When the workpiece 2 is to be moved out of the hearth of the furnace body 7, under the dragging of the hanging rod 5, the floating type fishplates 3 are sequentially separated from the front end surface of the track 4.3 from front to back, and finally the weight of the workpiece is carried by the locating pins 5.1 or the locating pins 5.1 and the locating tail rods 9 again.
When the workpiece 2 is in a stacking state in the furnace body 7, the length direction of the long seam 8 on the top surface of the furnace body 7 is sealed by a plurality of floating type fish scales 3 which are arranged in a fish scale shape, and the left side part in the figure 2 is referred to; the width direction of the long slit 8 is sealed by the floating type fish plate 3 and the track 4.3.
The surface of the hollow beam 4.4 close to the furnace chamber is provided with the heat insulation layer made of heat insulation materials, the working temperature of the heat insulation layer is greatly reduced, meanwhile, cooling water or cooling air is introduced into the hollow beam 4.4 for forced refrigeration, so that the working temperature of the heat insulation layer can be further reduced, and even though the working temperature in the furnace chamber is possibly up to 950 ℃, the working temperature of the hollow beam 4.4 can still be far lower than the long-term allowable temperature, so that the hollow beam 4.4 can keep certain straightness in the horizontal and vertical directions, and the track 4.3 arranged on the hollow beam 4.4 can also keep straightness in the horizontal and vertical directions at the working temperature of the furnace chamber.
Because the hollow beam 4.4 can keep a certain horizontal straightness at the working temperature of the furnace chamber, the width of the long seam 8 can be smaller, so that the diameter of the hanging rod 5 and the positioning tail rod 9 can be more similar to that of the hollow beam, high-temperature deformation can not be generated, so that motion interference is avoided, and the heat preservation effect is better.
Because the hollow beam 4.4 can keep a certain vertical straightness at the working temperature of the furnace chamber, the track 4.3 fixed on the hollow beam can be straight enough, so that the floating type fish plate 3 falling on the track 4.3 by means of self weight can be completely attached to the surface of the track 4.3 under the dragging of the suspender 5, and a large amount of furnace gas is isolated as a result, and the heat preservation effect is better.
Even if the sealing is still rigid, a small amount of furnace gas still overflows outwards, therefore, the invention arranges the wind collecting beam 4.1 and the duckbill wind spraying beam 4.2 above the floating type fish plate 3, the cooling gas from the inside of the duckbill wind spraying beam 4.2 is sprayed outwards from the nozzle and forms an air curtain above the floating type fish plate 3, thereby further isolating a small amount of furnace gas, and then the furnace gas is collected by the wind collecting beam 4.1 through a wind suction port and then discharged, thus, the circulating type accumulating trolley track 6, the accumulating trolley 1 and other parts above the floating type fish plate 3 can work at the temperature close to room temperature, and the long-term reliable operation of the production line can be ensured.
By means of the measures, on the premise that long-term reliable furnace feeding, furnace stacking and discharging actions and running of the workpiece 2 are ensured, the floating type fish plate 3 is towed on the track 4.3 by means of self weight, and therefore most furnace gas overflow can be isolated. The air curtain can further completely isolate a small amount of furnace gas from overflowing, and the uniformity of the furnace temperature is better after no air convection exists in the furnace body 7; a large amount of furnace gas does not overflow, so that the energy conservation of the furnace body 7 is better; after the furnace top working environment is closer to room temperature, the mechanical lubrication and electrical performance of the components such as the circulating type stacking trolley track 6, the stacking trolley 1 and the like can be ensured, and the long-term operation reliability of the production line is better.
Claims (5)
1. The furnace top sealing structure of the suspension type heat treatment furnace mainly comprises a circulating stacking trolley track (6), a plurality of groups of stacking trolleys (1), a furnace body (7), at least one suspender (5) and a positioning tail rod (9); the multiple groups of stacking trolleys (1) are arranged on the circulating stacking trolley track (6) in a mode of being capable of moving along the circulating stacking trolley track (6); the furnace body (7) is positioned at a certain part below the circulating stacking trolley track (6), and a long seam (8) is formed in the middle of the top surface along the moving direction of the stacking trolley (1); the upper ends of a plurality of hanging rods (5) or a hanging rod (5) and a positioning tail rod (9) are connected to a group of stacking trolleys (1), the lower ends are used for hanging workpieces (2), and when the workpieces pass through a furnace body (7), the middle parts of the hanging rods (5) and the positioning tail rod (9) can penetrate through a long seam (8); the method is characterized in that: the furnace top sealing structure comprises a floating type fish plate (3), a cooling beam (4) and a positioning pin (5.1); the cooling beam (4) comprises an air collecting beam (4.1), a duckbill air spraying beam (4.2), two rails (4.3) and two hollow beams (4.4); the lower ends of the two hollow beams (4.4) are respectively fixed at the positions on the top surface of the furnace body (7) which are positioned at the two sides of the long seam (8), and cooling gas or cooling water is introduced into the two hollow beams; the two rails (4.3) are respectively fixed at the inner side parts on the top surfaces of the two hollow beams (4.4); the duckbill air-jet beam (4.2) is arranged on the upper side of a hollow beam (4.4), cooling gas is introduced into the duckbill air-jet beam, and a nozzle on the duckbill air-jet beam faces the boom (5) and is higher than the track (4.3); the wind collecting beam (4.1) is arranged on the upper side of the other hollow beam (4.4), and the wind suction inlet on the wind collecting beam faces the hanging rod (5) and is higher than the track (4.3); the middle part of each suspender (5) is respectively provided with a locating pin (5.1) in a penetrating way along the transverse direction, and two ends of the locating pin (5.1) protrude outside the suspender (5); when one suspender (5) is arranged on each group of stacking trolleys (1), the upper end of the suspender (5) is connected to the front middle part of the stacking trolleys (1), the rear part of each stacking trolley (1) is connected with a positioning tail rod (9), and the suspension height of the lower end of each positioning tail rod (9) is lower than the length of the suspender (5) at a position above the positioning pin (5.1); when a plurality of hanging rods (5) are arranged on each group of stacking trolleys (1), the hanging rods (5) are arranged at intervals along the front-back direction, and the heights of positioning pins (5.1) on the hanging rods (5) are gradually reduced from front to back; each floating type fish plate (3) is provided with at least one opening penetrating through the upper part of a corresponding suspender (5) arranged on a group of stacking trolleys (1), so that the floating type fish plate (3) can move up and down on the suspender (5) at a position above a locating pin (5.1); when a suspender (5) is arranged, the rear part of the floating type fish plate (3) is connected with the lower end of the positioning tail rod (9).
2. The roof sealing structure of a suspension type heat treatment furnace according to claim 1, wherein: the elevation of the track (4.3) is higher than the elevation of the locating pin (5.1).
3. The roof sealing structure of a suspension type heat treatment furnace according to claim 1, wherein: the minimum distance between the air suction inlet on the air collecting beam (4.1) and the nozzle on the duckbill air spraying beam (4.2) and the track (4.3) is larger than the thickness of the floating fish scale plate (3).
4. The roof sealing structure of a suspension type heat treatment furnace according to claim 1, wherein: the front end part of the floating type fish plate (3) is in a bevel shape with the lower part inclined downwards from front to back, and the rear end part is in a bevel shape with the upper part inclined upwards from back to front; the width of the floating fish plate (3) is smaller than the distance between the wind collecting beam (4.1) and the upper part of the duckbill wind spraying beam (4.2), and is larger than the maximum distance between the two rails (4.3).
5. The roof sealing structure of a suspension type heat treatment furnace according to claim 1, wherein: the surface of the hollow beam (4.4) is provided with a heat insulation layer made of heat insulation materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910836947.9A CN110608612B (en) | 2019-09-05 | 2019-09-05 | Furnace top sealing structure of suspension type heat treatment furnace |
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| CN201910836947.9A CN110608612B (en) | 2019-09-05 | 2019-09-05 | Furnace top sealing structure of suspension type heat treatment furnace |
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| CN110608612B true CN110608612B (en) | 2024-04-05 |
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|---|---|---|---|---|
| CN2299874Y (en) * | 1997-06-23 | 1998-12-09 | 机械工业部第五设计研究院 | Overhead heat treatment conveying and channel sealing device for crankshaft |
| CN1341758A (en) * | 2001-08-27 | 2002-03-27 | 江苏省机电研究所 | Piling suspension chain workpiece heat treatment production line |
| CN2915879Y (en) * | 2006-07-04 | 2007-06-27 | 中国南车集团戚墅堰机车车辆厂 | Catenary continuous heating apparatus sealing structure |
| CN108239696A (en) * | 2018-01-12 | 2018-07-03 | 天津鼎元热工工程有限公司 | A kind of multi-joint suspension type elevating transport apparatus |
| CN108642259A (en) * | 2018-05-17 | 2018-10-12 | 马鞍山钢铁股份有限公司 | Workpiece temperature test method and system in a kind of suspension type heat-treatment furnace |
| CN210625355U (en) * | 2019-09-05 | 2020-05-26 | 天津鼎元热工工程有限公司 | Furnace top sealing structure of suspension type heat treatment furnace |
-
2019
- 2019-09-05 CN CN201910836947.9A patent/CN110608612B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2299874Y (en) * | 1997-06-23 | 1998-12-09 | 机械工业部第五设计研究院 | Overhead heat treatment conveying and channel sealing device for crankshaft |
| CN1341758A (en) * | 2001-08-27 | 2002-03-27 | 江苏省机电研究所 | Piling suspension chain workpiece heat treatment production line |
| CN2915879Y (en) * | 2006-07-04 | 2007-06-27 | 中国南车集团戚墅堰机车车辆厂 | Catenary continuous heating apparatus sealing structure |
| CN108239696A (en) * | 2018-01-12 | 2018-07-03 | 天津鼎元热工工程有限公司 | A kind of multi-joint suspension type elevating transport apparatus |
| CN108642259A (en) * | 2018-05-17 | 2018-10-12 | 马鞍山钢铁股份有限公司 | Workpiece temperature test method and system in a kind of suspension type heat-treatment furnace |
| CN210625355U (en) * | 2019-09-05 | 2020-05-26 | 天津鼎元热工工程有限公司 | Furnace top sealing structure of suspension type heat treatment furnace |
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| CN110608612A (en) | 2019-12-24 |
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