CN110608612A - Furnace top sealing structure of suspension type heat treatment furnace - Google Patents
Furnace top sealing structure of suspension type heat treatment furnace Download PDFInfo
- Publication number
- CN110608612A CN110608612A CN201910836947.9A CN201910836947A CN110608612A CN 110608612 A CN110608612 A CN 110608612A CN 201910836947 A CN201910836947 A CN 201910836947A CN 110608612 A CN110608612 A CN 110608612A
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- furnace
- fish scale
- suspender
- scale plate
- track
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 239000000725 suspension Substances 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 241000251468 Actinopterygii Species 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000009825 accumulation Methods 0.000 claims description 29
- 239000000112 cooling gas Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 230000007774 longterm Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241000405070 Percophidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001788 irregular Effects 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
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
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- 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 fish scale plate, a cooling beam and a positioning pin; the cooling beam comprises a wind collecting beam, a duckbilled air spraying beam, a track and a hollow beam; the invention can keep enough straightness under the working condition of both room temperature and high temperature. The floating fish scale plate is used as a cover plate and dragged on a track with enough straightness by the weight of the floating fish scale plate, so that the aim of inhibiting the furnace gas from overflowing is fulfilled. Meanwhile, the air curtain is arranged at the upper part of the floating type fish scale plate, so that a small amount of excessive furnace gas is isolated, and the working temperature of the accumulating and conveying part above the floating type fish scale plate is ensured to be close to the ambient temperature all the time. Considering that the floating fish scale plate has no track support outside the furnace, a positioning pin is arranged on the suspender; through setting the proper position of the positioning pin, the floating fish scale plate is in a front-end upward-facing posture outside the furnace, so that the transition action of mutual conversion of the weight of the floating fish scale plate from the positioning pin to the rail is smooth when a workpiece enters and exits the furnace.
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, a suspension type heat treatment furnace is generally adopted as heat treatment equipment for heat treatment of some parts, particularly large-batch single-variety workpieces with shapes suitable for hanging modes. Because the suspended heat treatment furnace has the advantages of large capacity, small workpiece heating deformation, reliable operation and the like, the suspended heat treatment furnace is widely applied to the industries of automobiles, railways, engineering machinery, war industry and the like. However, unlike other heat treatment furnaces, the suspended heat treatment furnace must have a long seam at the top of the furnace body for the step-wise periodic movement of a boom attached between a work piece and a stacking cart positioned above the furnace body. The long seam is adjacent to the high-temperature furnace chamber, so that the long seam expands after being heated and generates irregular deformation, and particularly, the thermal expansion and deformation of the long seam are more obvious for a large-scale long heat treatment furnace with larger capacity.
The existing technical scheme for solving the problem is to make the long seam wider, adopt a section of heat-resistant cast iron at two sides and connect the heat-resistant cast iron with a furnace top steel plate by bolts, make the distance between a fish scale plate arranged in the middle of a suspender and the top of a furnace body larger, and design enough clearance to ensure that the long seam after thermal expansion can still pass through the suspender driven by a stacking trolley.
However, this solution brings problems that a large amount of furnace gas flowing upward in the furnace overflows outward along the gap between the long seam and the hanger rod, which results in poor temperature uniformity of the furnace chamber and high energy consumption, and meanwhile, the overflow of a large amount of furnace gas causes the working environment temperature of the accumulation conveyor chain system right above the long seam to be too high, and the lubrication oil and the electric control system are prone to failure when used at a temperature of more than 100 ℃ for a long time, and as a result, the reliability of the production line is reduced.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a furnace top sealing structure of a suspension type heat treatment furnace.
In order to achieve the aim, the suspended heat treatment furnace in the furnace top sealing structure of the suspended heat treatment furnace mainly comprises a circulating type accumulation trolley track, a plurality of groups of accumulation trolleys, a furnace body, at least one suspender and a positioning tail rod; the multiple groups of accumulation trolleys are arranged on the circulating accumulation trolley track in a way of moving along the circulating accumulation trolley track; the furnace body is positioned at a certain part below the track of the circulating type accumulation trolley, and a long seam is formed in the middle of the top surface along the moving direction of the accumulation trolley; the upper ends of the plurality of suspenders or one suspender and one positioning tail rod are connected to a group of stacking trolleys, the lower ends of the suspenders and the positioning tail rod are used for suspending workpieces, and the middles of the suspenders and the positioning tail rod can penetrate through the long seam when the suspenders pass through the furnace body; the furnace top sealing structure comprises a floating fish scale plate, a cooling beam and a positioning pin; the cooling beam comprises a wind collecting beam, a duckbilled air blast beam, two rails and two hollow beams; the lower ends of the two hollow beams are respectively fixed on the top surface of the furnace body at the positions at the two sides of the long seam, and cooling gas or cooling water is introduced into the hollow beams; the two rails are respectively fixed at the upper inner side parts of the top surfaces of the two hollow beams; the duckbilled air blast beam is arranged on the upper side of the hollow beam, cooling gas is introduced into the duckbilled air blast beam, and a nozzle on the duckbilled air blast beam faces the suspender and is higher than the track; the air collecting beam is arranged on the upper side of the other hollow beam, and an air suction opening on the air collecting beam faces the suspender and is higher than the track; the middle part of each suspender is respectively provided with a positioning pin along the transverse direction in a penetrating way, and the two ends of the positioning pin protrude out of the suspender; when each group of the stacking trolleys is provided with a suspender, the upper end of the suspender is connected with the front middle part of the stacking trolley, meanwhile, 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 part, above the positioning pin, of the suspender; when a plurality of hanging rods are arranged on each group of stacking trolleys, the hanging rods are arranged at intervals in 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 scale plate is provided with at least one hole which penetrates through the upper parts of the corresponding suspension rods on the group of stacking trolleys, so that the floating type fish scale plates can move up and down on the suspension rods at the positions above the positioning pins; when a suspender is arranged, the rear part of the floating fish scale plate is connected with the lower end of the positioning tail rod.
The elevation of the track is higher than that of the positioning pin.
The minimum distance between the suction opening on the wind collecting beam and the nozzle on the duckbilled wind spraying beam and the track is larger than the thickness of the floating type fish scale plate.
The front end part of the floating fish scale plate is in an inclined plane shape with the lower part inclined downwards from front to back, and the rear end part is in an inclined plane shape with the upper part inclined upwards from back to front; the width of floating fish scale board is less than the distance between collection wind beam portion and the duckbilled wind beam portion that spouts, is greater than the maximum distance between two tracks simultaneously.
And a heat insulation layer made of heat insulation materials is arranged on the surface of the hollow beam.
The furnace top sealing structure of the suspension type heat treatment furnace provided by the invention has the following beneficial effects:
the high-temperature linear guide rail can maintain enough linearity at room temperature and high-temperature working conditions. The floating fish scale plate is used as a cover plate and dragged on a track with enough straightness by the weight of the floating fish scale plate, so that the aim of inhibiting the furnace gas from overflowing is fulfilled. Meanwhile, the air curtain is arranged at the upper part of the floating type fish scale plate, so that a small amount of excessive furnace gas is isolated, and the working temperature of the accumulating and conveying part above the floating type fish scale plate is ensured to be close to the ambient temperature all the time. Meanwhile, when the floating fish scale plate is not supported by a rail outside the furnace, a positioning pin is arranged on the hanger rod; through setting the proper position of the positioning pin, the floating fish scale plate is in a front-end upward-pitching posture outside the furnace, so that the transition action of mutual conversion of the weight of the floating fish scale plate from the positioning pin to the rail can be smooth when a workpiece enters and exits the furnace.
Drawings
Fig. 1 is a sectional view of a furnace body structure in a suspension type heat treatment furnace provided with the furnace top sealing structure provided by the invention.
FIG. 2 is a cross-sectional view along direction AA in FIG. 1, wherein the left side portion is a schematic view of the inside state of the furnace chamber and the right side portion is a schematic view of the outside state of the furnace chamber;
fig. 3 is an enlarged view of a portion of fig. 1.
Fig. 4 is a partial structure enlarged view of a left side portion of fig. 2.
Fig. 5 is an example diagram of a floating type fish scale hanging scheme when a hanging rod is arranged on each group of accumulating trolleys.
Detailed Description
The furnace top sealing structure of the suspension type heat treatment furnace provided by the invention is described in detail below by combining the attached drawings and specific embodiments.
As shown in fig. 1-5, the suspension type heat treatment furnace in the furnace top sealing structure of the suspension type heat treatment furnace provided by the invention mainly comprises a circulating type accumulation trolley track 6, a plurality of groups of accumulation trolleys 1, a furnace body 7, at least one hanger rod 5 and a positioning tail rod 9; the multiple groups of accumulation trolleys 1 are arranged on the circulating accumulation trolley track 6 in a manner of moving along the circulating accumulation trolley track 6; the furnace body 7 is positioned at a certain part below the track 6 of the circulating type accumulation trolley, and a long seam 8 is formed in the middle of the top surface along the moving direction of the accumulation trolley 1; the upper ends of a plurality of suspenders 5 or a suspender 5 and a positioning tail rod 9 are connected on a group of accumulation trolleys 1, the lower ends are used for suspending workpieces 2, and the middles of the suspenders 5 and the positioning tail rod 9 can penetrate through the long seam 8 when passing through the furnace body 7; the furnace top sealing structure comprises a floating fish scale plate 3, a cooling beam 4 and a positioning pin 5.1; wherein, the cooling beam 4 comprises a wind collecting beam 4.1, a duckbilled blast beam 4.2, two tracks 4.3 and two hollow beams 4.4; the lower ends of the two hollow beams 4.4 are respectively fixed on the top surface of the furnace body 7 at the positions at two sides of the long seam 8, and cooling gas or cooling water is introduced into the interior of the furnace body; 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 duckbilled air blast beam 4.2 is arranged on the upper side of a hollow beam 4.4, cooling gas is introduced into the duckbilled air blast beam, and a nozzle on the duckbilled air blast beam faces the suspender 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 an air suction opening on the wind collecting beam faces the suspender 5 and is higher than the track 4.3; the middle part of each suspender 5 is respectively provided with a positioning pin 5.1 along the transverse direction in a penetrating way, and the two ends of the positioning pin 5.1 protrude out of the suspender 5; when each group of the accumulating trolleys 1 is provided with a suspender 5, the upper end of the suspender 5 is connected with the front middle part of the accumulating trolley 1, meanwhile, the rear part of the accumulating trolley 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 part, above the positioning pin 5.1, of the suspender 5; when a plurality of suspenders 5 are arranged on each group of stacking trolleys 1, the suspenders 5 are arranged at intervals along the front-back direction, and the heights of positioning pins 5.1 on the suspenders 5 are gradually reduced from front to back; each floating type fish scale plate 3 is provided with at least one hole which penetrates through the upper parts of the corresponding suspension rods 5 on the group of stacking trolleys 1, so that the floating type fish scale plates 3 can move up and down at the parts, which are positioned above the positioning pins 5.1, on the suspension rods 5; when a suspender 5 is arranged, the rear part of the floating fish scale 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 positioning pin 5.1.
The minimum distance between the air suction opening on the wind collecting beam 4.1 and the nozzle on the duckbilled wind 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 fish scale plate 3 is in an inclined plane shape with the lower part inclined downwards from front to back, and the rear end part is in an inclined plane shape with the upper part inclined upwards from back to front; the width of the floating fish scale plate 3 is smaller than the distance between the upper parts of the wind collecting beam 4.1 and the duckbill blast beam 4.2, and is larger than the maximum distance between the two tracks 4.3.
And a heat insulation layer made of heat insulation materials is arranged on the surface of the hollow beam 4.4.
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 fish scale plates 3 on each group of the accumulating trolleys 1 is jointly borne by a plurality of positioning pins 5.1 on the suspender 5 or a positioning pin 5.1 and a positioning tail rod 9; when one suspender 5 is arranged, the suspension height of the lower end of the positioning tail rod 9 is lower than the length of the part, which is positioned above the positioning pin 5.1, of the suspender 5, when a plurality of suspenders 5 are arranged, the height of the positioning pins 5.1 on the suspenders 5 is gradually reduced from front to back, so that the floating type fish scale plate 3 is in a state that the front end is higher than the rear end, the front end of the floating type fish scale plate 3 is higher than the elevation of the track 4.3, and the rear end elevation is lower than the elevation of the track 4.3, therefore, a certain included angle is formed between the plane where the floating type fish scale plate 3 is positioned and the extension line of the track 4.3, which is seen from the right part;
when the workpiece 2 is driven by the stacking trolley 1 and the suspender 5 to enter the furnace chamber of the furnace body 7 from the outside of the furnace body 7, the front end of the workpiece is higher than the elevation of the rail 4.3, under the dragging action of the suspender 5 and the lifting action of the rear end of the rail 4.3, the floating type fish scales 3 float from front to back in sequence, so that the workpiece leaves the positioning pin 5.1 and finally the weight of the workpiece is completely borne on the two rails 4.3, at the moment, the floating type fish scales 3 are in a horizontal posture, and in the stacking state, the rear end parts of the floating type fish scales 3 on the previous stacking trolley 1 are overlapped on the front end parts of the floating type fish scales 3 on the next stacking trolley 1, so that the workpieces are arranged in a fish scale shape.
When the workpiece 2 is to be moved out of the hearth of the furnace body 7, under the dragging of the suspender 5, the floating type fish scales 3 are sequentially separated from the front end surface of the rail 4.3 from front to back, and finally the weight of the floating type fish scales is carried by the positioning pin 5.1 or the positioning pin 5.1 and the positioning tail rod 9 again.
When the workpiece 2 is in a stacked state in the furnace body 7, the long seam 8 on the top surface of the furnace body 7 is sealed in the length direction by a plurality of floating fish-scale plates 3 which are arranged in a fish scale shape, see the left part in fig. 2; the long slit 8 is sealed by the floating fish scale 3 and the rail 4.3 in the width direction.
Because 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 is greatly reduced, and simultaneously, cooling water or cooling air is introduced into the hollow beam 4.4 for forced refrigeration, the working temperature can be further reduced, so that even if the working temperature in the furnace chamber can reach 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 the straightness in the horizontal and vertical directions at the working temperature of the furnace chamber.
Because the hollow beam 4.4 can keep certain horizontal direction straightness under the furnace chamber operating temperature, therefore, the width of the long seam 8 can be smaller, so can be closer to the diameter of the suspender 5 and the positioning tail rod 9, and can not generate high temperature deformation to cause movement interference, and consequently the heat preservation effect is better.
Because the hollow beam 4.4 can keep a certain vertical direction straightness under the working temperature of the furnace chamber, the track 4.3 fixed on the hollow beam can be flat enough, so the floating type fish scale plate 3 falling on the track 4.3 by self weight can be completely attached to the surface of the track 4.3 under the dragging of the suspender 5, as a result, a large amount of furnace gas is isolated, and the heat preservation effect is better.
Even if the sealing is still rigid sealing, a small amount of furnace gas still overflows outwards, and therefore the air collecting beam 4.1 and the duckbilled air spraying beam 4.2 are arranged above the floating fish-scale plate 3, cooling gas from the inside of the duckbilled air spraying beam 4.2 is sprayed outwards from the nozzle, and an air curtain is formed above the floating fish-scale plate 3, so that a small amount of furnace gas is further isolated, and then the cooling gas is collected by the air collecting beam 4.1 through the air suction opening and then discharged, so that the circulating type accumulation trolley track 6, the accumulation trolley 1 and other parts above the floating fish-scale plate 3 can work at the temperature close to room temperature, and the production line can be ensured to run reliably for a long time.
Through the measures, the floating type fish scale plate 3 can be dragged on the track 4.3 by self weight on the premise of ensuring the long-term reliable operation of the work piece 2 in the furnace, the accumulation in the furnace and the discharge from the furnace, thereby being capable of isolating most furnace gas from overflowing. The air curtain can further completely isolate the overflow of a small amount of furnace gas, 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-saving property of the furnace body 7 is better; after the working environment of the furnace top is closer to the room temperature, the mechanical lubrication and electrical performance of the components such as the circulating type accumulation trolley track 6, the accumulation trolley 1 and the like can be ensured, and the long-term operation reliability of the production line is better.
Claims (5)
1. A furnace top sealing structure of a suspension type heat treatment furnace mainly comprises a circulating type accumulation trolley track (6), a plurality of groups of accumulation trolleys (1), a furnace body (7), at least one suspender (5) and a positioning tail rod (9); the multiple groups of accumulation trolleys (1) are arranged on the circulating accumulation trolley track (6) in a manner of moving along the circulating accumulation trolley track (6); the furnace body (7) is positioned at a certain part below the track (6) of the circulating type accumulation trolley, and a long seam (8) is formed in the middle of the top surface along the moving direction of the accumulation trolley (1); the upper ends of a plurality of suspenders (5) or a suspender (5) and a positioning tail rod (9) are connected on a group of stacking trolleys (1), the lower ends are used for suspending workpieces (2), and the middles of the suspenders (5) and the positioning tail rod (9) can penetrate through long seams (8) when passing through a furnace body (7); the method is characterized in that: the furnace top sealing structure comprises a floating fish scale plate (3), a cooling beam (4) and a positioning pin (5.1); wherein, the cooling beam (4) comprises a wind collecting beam (4.1), a duckbilled blast beam (4.2), two tracks (4.3) and two hollow beams (4.4); the lower ends of the two hollow beams (4.4) are respectively fixed on the top surface of the furnace body (7) at the positions at two sides of the long seam (8), and cooling gas or cooling water is introduced into the interior of the furnace body; 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 duckbilled air blast beam (4.2) is arranged on the upper side of a hollow beam (4.4), cooling gas is introduced into the duckbilled air blast beam, and a nozzle on the duckbilled air blast beam faces the suspender (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 an air suction opening on the wind collecting beam faces the suspender (5) and is higher than the track (4.3); the middle part of each suspender (5) is respectively provided with a positioning pin (5.1) in a transverse penetrating way, and the two ends of the positioning pin (5.1) protrude out of the suspender (5); when each group of the accumulating trolleys (1) is provided with a suspender (5), the upper end of the suspender (5) is connected with the front middle part of the accumulating trolley (1), meanwhile, the rear part of the accumulating trolley (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 part, above the positioning pin (5.1), of the suspender (5); when a plurality of hanging rods (5) are arranged on each group of stacking trolleys (1), the hanging rods (5) are arranged at intervals in 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 scale plate (3) is provided with at least one hole which is arranged on a group of accumulation trolleys (1) in a penetrating way and corresponds to the upper part of the suspender (5), so that the floating type fish scale plates (3) can move up and down at the position above the positioning pin (5.1) on the suspender (5); when a suspender (5) is arranged, the rear part of the floating fish scale plate (3) is connected with the lower end of the positioning tail rod (9).
2. The furnace top sealing structure of a suspension heat treatment furnace according to claim 1, characterized in that: the elevation of the track (4.3) is higher than that of the positioning pin (5.1).
3. The furnace top sealing structure of a suspension heat treatment furnace according to claim 1, characterized in that: the minimum distance between the suction opening on the wind collecting beam (4.1) and the nozzle on the duckbilled wind spraying beam (4.2) and the track (4.3) is larger than the thickness of the floating fish scale plate (3).
4. The furnace top sealing structure of a suspension heat treatment furnace according to claim 1, characterized in that: the front end part of the floating fish scale plate (3) is in an inclined plane shape with the lower part inclined downwards from front to back, and the rear end part is in an inclined plane shape with the upper part inclined upwards from back to front; the width of the floating fish scale plate (3) is smaller than the distance between the upper parts of the wind collecting beam (4.1) and the duckbilled blast beam (4.2), and is larger than the maximum distance between the two tracks (4.3).
5. The furnace top sealing structure of a suspension heat treatment furnace according to claim 1, characterized in that: 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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| CN110608612A true CN110608612A (en) | 2019-12-24 |
| CN110608612B CN110608612B (en) | 2024-04-05 |
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| 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 |
-
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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| CN110608612B (en) | 2024-04-05 |
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