CN219689798U - Large horizontal heat treatment furnace door device - Google Patents
Large horizontal heat treatment furnace door device Download PDFInfo
- Publication number
- CN219689798U CN219689798U CN202321330611.3U CN202321330611U CN219689798U CN 219689798 U CN219689798 U CN 219689798U CN 202321330611 U CN202321330611 U CN 202321330611U CN 219689798 U CN219689798 U CN 219689798U
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- furnace door
- opening
- baffle
- furnace
- heat treatment
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses a large-scale horizontal heat treatment furnace door device, which comprises: a furnace body provided with an opening; the furnace door is used for opening and closing the opening; the two baffle rails are arranged on two sides of the furnace door, a lower baffle is arranged below the baffle rails, and the lower baffle is arranged on the descending path of the furnace door; opening and closing mechanism: the two opening and closing mechanisms are positioned on two sides of the furnace door, each opening and closing mechanism comprises a plurality of rotating parts which rotate synchronously, each rotating part is connected with one side of the furnace door through a rotating shaft in a rotating way, each rotating part is connected with a first roller in a rotating way, each rotating part is provided with a lifting end, the first rollers and the lifting ends are positioned on two sides of the rotating shaft, and the first rollers roll on the baffle rails; the lifting steel wire rope lifts the counterweight connecting rod, so that the furnace door firstly translates along the horizontal direction to open the opening, and then lifts along the vertical direction after the furnace door is away from the opening to a set distance. The upper edge of the inner side of the furnace door is prevented from being scratched with the furnace body, and the abrasion of the furnace door is prevented.
Description
Technical Field
The utility model relates to the field of machinery in general, in particular to the field of heat treatment equipment, and particularly relates to a furnace door device of a large horizontal heat treatment furnace.
Background
In the process of manufacturing a machine structural part, various heat treatments are applied to a workpiece in accordance with the purpose of improving the strength of a member, improving the wear resistance, and the like. A heat treatment furnace for performing heat treatment of a workpiece requires that the interior of the furnace be maintained at a predetermined atmosphere. In heat treatment of a workpiece, the workpiece is required to be placed in a heat treatment furnace from an opening of a furnace body. After the heat treatment of the workpiece is completed, the workpiece needs to be taken out from the opening of the furnace body.
The furnace door of the existing large horizontal heat treatment furnace adopts a gate type furnace door which is opened gradually by sliding a channel, and the furnace door is directly lifted by a steel wire rope. The furnace body is provided with a channel, the furnace door is provided with a roller, and the roller rolls in the channel. In the heat treatment process of the heat treatment furnace, the furnace door needs to be tightly attached to the furnace body to seal the opening, so that the furnace door and the furnace body are prevented from being scratched in the lifting process of the furnace door, and a section of arc is arranged at the lower part of the track. When the furnace door is lifted and the roller rolls through the arc section, the furnace door gradually leaves the furnace body. However, in order to ensure that the roller rolls smoothly on the track, the arc of the arc section is relatively large and is inclined. The inner side of the furnace door can scratch the furnace body when the furnace door is just opened and is closed, the furnace door is generally made of asbestos, scratch and abrasion of the furnace door are caused, the furnace door is not tightly sealed, heat energy is dissipated, frequent maintenance is needed, and the operation and maintenance cost of the large horizontal heat treatment furnace is increased.
Disclosure of Invention
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a large horizontal heat treatment furnace door assembly that avoids wear of the furnace door.
In a first aspect, the present utility model provides a large-sized horizontal heat treatment furnace door apparatus comprising:
a furnace body provided with an opening;
the furnace door is used for opening and closing the opening, and is fixedly connected with an upper baffle plate which is provided with a waist hole;
the two baffle rails are arranged on two sides of the furnace door, the lower part of the baffle rail is provided with a lower baffle plate, and the lower baffle plate is positioned on the descending path of the furnace door;
opening and closing mechanism: the device comprises two opening and closing mechanisms, wherein the two opening and closing mechanisms are positioned on two sides of a furnace door, the opening and closing mechanisms comprise a plurality of rotating parts which rotate synchronously, the rotating parts are connected with one side of the furnace door in a rotating way through a rotating shaft, the rotating parts are connected with first idler wheels in a rotating way, the rotating parts are provided with lifting ends, the lifting ends are respectively connected with counterweight connecting rods in a rotating way, the first idler wheels and the counterweight connecting rods are positioned on two sides of the rotating shaft, the first idler wheels roll on baffle rails, the counterweight connecting rods pass through waist holes, one side of each counterweight connecting rod, which is close to an upper baffle, is connected with a baffle block in an adjustable position, the baffle block is positioned between the upper baffle and a lower baffle, and the outer diameter of the baffle block is larger than the width of each waist hole; and
a lifting steel wire rope for lifting the counterweight connecting rod,
the lifting steel wire rope lifts the counterweight connecting rod, so that the furnace door firstly translates along the horizontal direction to open the opening, and then lifts along the vertical direction after the furnace door is away from the opening to a set distance.
According to the technical scheme provided by the embodiment of the utility model, when the furnace door is opened, the lifting steel wire rope lifts the counterweight connecting rod to drive the rotating parts to rotate, so that the first rollers on the rotating parts on two sides synchronously approach to the baffle rails on two sides, and then the baffle rails are attached to pry the furnace door open, namely the furnace door is driven to translate along the horizontal direction, so that the furnace door is far away from the furnace body, the opening is opened, the lifting steel wire rope continues to lift, when the baffle block touches the upper baffle, the furnace door is separated from the opening to a set distance, the lifting steel wire rope can lift the furnace door along the vertical direction, the inner side of the furnace door and the furnace body are prevented from being scratched and worn, and the heat energy is lost and the furnace door is frequently maintained due to the inexact closing of the furnace door, so that the effect of reducing the operation and maintenance cost of the large horizontal heat treatment furnace is achieved.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic front view of a large horizontal heat treatment furnace door apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic side view of a furnace door assembly of a large horizontal heat treatment furnace according to an embodiment of the present utility model;
fig. 3 is a schematic view showing a structure of a counterweight link and a stopper of a furnace door device of a large horizontal heat treatment furnace according to an embodiment of the utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 3, the large-sized horizontal heat treatment furnace door apparatus of the present utility model includes: a furnace body provided with an opening; the furnace door 100 is used for opening and closing the opening, the furnace door 100 is fixedly connected with the upper baffle 130, and the upper baffle 130 is provided with a waist hole 131; the two baffle rails 200 are arranged, the two baffle rails 200 are positioned on two sides of the furnace door 100, the lower part of the baffle rail 200 is provided with a lower baffle 210, and the lower baffle 210 is positioned on the descending path of the furnace door 100; opening and closing mechanism 300: the two opening and closing mechanisms 300 are arranged on two sides of the furnace door 100, the opening and closing mechanisms 300 comprise a plurality of rotating pieces 310 which rotate synchronously, the rotating pieces 310 are rotationally connected with one side of the furnace door 100 through rotating shafts 320, the rotating pieces 310 are rotationally connected with first rollers 311, the rotating pieces 310 are provided with lifting ends 313, the lifting ends 313 are respectively rotationally connected with weight connecting rods 330, the first rollers 311 and the weight connecting rods 330 are positioned on two sides of the rotating shafts 320, the first rollers 311 roll on baffle rails 200, the weight connecting rods 330 pass through waist holes 131, one side of the weight connecting rods 330 close to the upper baffle 130 is adjustably connected with a stop block 334, the stop block 334 is positioned between the upper baffle 130 and the lower baffle 210, and the outer diameter of the stop block 334 is larger than the width of the waist holes 131; and a lifting wire rope 400, which is used for lifting the counterweight connecting rod 330, wherein the lifting wire rope 400 lifts the counterweight connecting rod 330, drives the plurality of rotating members 310 to synchronously rotate, so that the upper and lower first rollers 311 synchronously move towards the baffle rail 200 to be close, and further the baffle rail 200 (two sides synchronously) is attached to pry open the furnace door 100, so that the furnace door 100 firstly translates along the horizontal direction to open the opening, and then lifts along the vertical direction after the furnace door 100 is away from the opening to a set distance.
In the embodiment of the utility model, the furnace body is provided with an opening, a workpiece enters and exits the furnace body from the opening, and the furnace door can open and close the opening. Specifically, when a workpiece is required to be placed into the furnace body or the workpiece is required to be taken out from the furnace body, the electric hoist lifts the steel wire rope, and the steel wire rope lifts the furnace door, so that the furnace door ascends to open the opening, and the workpiece can smoothly enter and exit the furnace door from the opening. When the workpiece is put into the furnace body and heat treatment is required to be carried out on the workpiece in the furnace body, the electric hoist loosens the steel wire rope, and the furnace door descends under the action of self gravity until the furnace door seals the opening.
The two baffle rails are arranged on two sides of the furnace door. The door opening mechanisms are arranged in two, and the two door opening mechanisms are positioned on two sides of the furnace door. One opening and closing mechanism is matched with one baffle rail at one side of the furnace door; on the other side of the oven door, another opening and closing mechanism is matched with another baffle rail. By arranging the baffle rail and the door opening mechanism on the two sides of the furnace door respectively, the furnace door is ensured to be stressed uniformly in the opening and closing process.
The baffle rail is provided with a lower baffle plate which is positioned on the descending path of the furnace door. The door opening mechanism comprises a plurality of rotating parts which rotate synchronously, and the rotating parts are respectively connected with one side of the furnace door in a rotating way. The plurality of rotating parts of the same door opening mechanism are positioned at one side of the furnace door. The rotating piece rotates and is connected with first gyro wheel, and the rotating piece is provided with the lift end, and first gyro wheel rolls on keeping off the rail. The baffle rail is provided with a first side 231 and a second side 232 which are opposite to each other, the second side 232 is one side of the baffle rail close to the furnace body, the first side 231 is one side of the baffle rail far away from the furnace body, and the first roller 311 rolls on the first side 231.
Referring to fig. 2, when the opening of the furnace body needs to be opened, the lifting wire rope lifts the counterweight connecting rod, the counterweight connecting rod drives the plurality of rotating members to synchronously rotate clockwise in the drawing, and the first roller abuts against the first side. Along with the rotation of the rotating piece, the rotating piece moves the furnace door rightward in the drawing through the rotating shaft, and the rotating piece starts to incline, so that the furnace door is firstly translated and separated from the furnace body. Along with lifting the wire rope and continuing to lift, touch the upper baffle at the dog, the dog can drive the upper baffle upward movement after the furnace gate is apart from the opening to the settlement distance this moment, and the wire rope pulls the furnace gate along vertical direction upward movement promptly, avoids the furnace gate to take place to scratch with the furnace body in the upward movement in-process to avoid the furnace gate to appear scratching wearing and tearing, reduced the fortune dimension cost of large-scale horizontal heat treatment furnace. In the process of opening the opening, the furnace door is firstly translated outwards to separate from the furnace body, the opening is opened, and then the furnace door rises along the vertical direction.
The counterweight connecting rod is connected with a stop block in an adjustable position, and the set distance is adjusted by adjusting the position of the stop block on the counterweight connecting rod. Specifically, when the furnace door is in a state of closing the opening, the further the distance between the stop block and the upper baffle is, the larger the set distance between the furnace door and the opening is; the closer the distance between the stop block and the upper baffle plate is, the smaller the set distance between the furnace door and the opening is. The position of the stop block on the counterweight connecting rod can be adjusted according to actual conditions, namely the distance between the stop block and the upper baffle is adjusted, so that the stop block is prevented from being scratched with the furnace body when the furnace door is opened or closed.
When the opening of the furnace body needs to be closed, the lifting steel wire rope starts to be loosened, and the furnace door descends under the action of self gravity. In the furnace door descending process, the rotating piece always keeps an inclined state, so that the upper first roller wheels and the lower first roller wheels on two sides are attached to the baffle rails on two sides, the furnace door forms an inclined angle (the angle can be finely adjusted) to ensure that the roller wheels are attached to the baffle rails tightly, the furnace door stably rolls and slides down on the baffle rails, the furnace door keeps a certain distance from the furnace body, and the furnace door is prevented from being scratched with the furnace body. After the furnace door moves to be stopped by the lower baffle, the furnace door cannot continuously descend due to the stop of the lower baffle, the rotating piece can rotate anticlockwise due to the gravity action of the counterweight connecting rod along with the continuous loosening of the lifting steel wire rope, and the first roller can be separated from the first side. The air cylinder can push the furnace door to the furnace body, so that the furnace door seals the opening. In the process of closing the opening, the furnace door firstly descends along the vertical direction from a position far away from the furnace body, and then moves inwards in a translation way to close the opening.
The side of the first roller 311 near the oven door may be provided with a limiting plate 312, but is not limited thereto, and the limiting plate 312 surrounds the first roller. When the first roller rolls on the first side, the limiting plate 312 can prevent the first roller from separating from the first side, so that the reliability of rolling of the first roller on the baffle rail is ensured.
The door opening mechanism is provided with two rotating parts, one rotating part is positioned above the furnace door, and the other rotating part is positioned below the furnace door, so that the furnace door can be stressed uniformly when the rotating parts rotate.
Further, the upper baffle 110 is rotatably connected with a second roller 111, the first roller 311 and the second roller 111 are located at two opposite sides of the baffle rail 200, and the horizontal distance between the first roller 311 and the second roller 111 is greater than the width of the baffle rail 200.
In the embodiment of the utility model, the vertical height of the second roller is larger than that of the first roller, and in the process of lifting the counterweight connecting rod by the lifting steel wire rope to drive the furnace door to move, the first roller rolls on the first side and the second roller rolls on the second side, so that the balance of the furnace door is maintained, the furnace door is prevented from moving away from the baffle rail, and the stability of the movement of the furnace door is ensured.
Further, a fixed seat 120 is fixedly connected to the bottom of the oven door 100, a plurality of third rollers 121 are rotatably connected to one side of the fixed seat 120 facing the lower baffle 210, and the lower baffle 210 is located right below the third rollers 121.
In the embodiment of the utility model, the lower baffle can stop and support the furnace door, and the lower baffle plays a limiting role on the lowest position of the furnace door. When the lower baffle stops the furnace door, the third roller clings to the lower baffle, and when the furnace door translates outwards or inwards, the third roller rolls on the lower baffle, so that the furnace door and the lower baffle are prevented from being scratched, and the furnace door is also convenient to translate.
Further, the baffle rail 200 is fixedly connected with a plurality of air cylinders 220, the plurality of air cylinders 220 synchronously act, and the plurality of air cylinders 220 are used for driving the furnace door 100 to cling to the furnace body.
In the embodiment of the utility model, when the opening needs to be closed and the furnace door descends, after the furnace door moves to be stopped by the lower baffle plate, the plurality of air cylinders synchronously act to push the furnace door to cling to the furnace body, so that the furnace door closes the opening. In addition, in the heat treatment process of the heat treatment furnace on the workpiece, the air cylinder props against the furnace door, so that the tightness between the furnace door and the furnace body can be ensured. When the furnace door needs to be lifted and the opening is opened, the air cylinder can reset, so that the air cylinder is prevented from affecting the translation of the furnace door.
Further, the door 100 is fixedly connected with a push plate, which is aligned with the air cylinder 220.
In the embodiment of the utility model, the air cylinder drives the furnace door to cling to the furnace body by pushing the pushing plate, and the air cylinder is convenient to push the furnace door to move by arranging the pushing plate.
Further, the fire door 100 is fixedly connected with a trigger block, the stop rail 200 is provided with a travel switch, and when the fire door 100 descends to the lowest position, the trigger block triggers the travel switch, and the air cylinder 220 pushes the fire door 100 to cling to the furnace body.
In the embodiment of the utility model, when the furnace door descends to the lowest position, the trigger block triggers the travel switch and stops the electric hoist. The air cylinder indicates that the furnace door is lowered to the lowest position according to the trigger signal of the travel switch, the electric hoist stops and does not drive the lifting steel wire rope to move, the piston rod of the air cylinder stretches out, the furnace door is pushed to cling to the furnace body, and automatic control can be achieved.
Further, the end of the counterweight connecting rod 330 near the upper baffle 130 is fixedly connected with a connecting rod 331, the connecting rod 331 is in screwed connection with an adjusting nut 332, one side of the adjusting nut 332 facing the upper baffle 130 is fixedly connected with a stop block 334, one end of the connecting rod 331 penetrating through the waist hole 131 is fixedly connected with a connecting stop seat 333, and the lifting steel wire rope 400 lifts the connecting stop seat 333.
In the embodiment of the utility model, when the position of the stop block needs to be adjusted, the adjusting nut can be rotated to change the threaded connection position of the adjusting nut and the connecting rod. The locking nut can be screwed on the connecting rod and is positioned on one side of the adjusting nut, which is opposite to the stop block, and the locking nut can play a role in locking the adjusting nut. The connecting rod is also provided with a connecting stop seat, and the connecting stop seat can prevent the connecting rod from penetrating through the waist hole.
Further, a connection member 314 is rotatably connected to the pulling end 313 of the rotation member 310 at the bottom, and a bolt 315 is screwed with the weight link 330 through the connection member 314.
In the embodiment of the present utility model, the connection member is rotatably connected to the pulling end, and may, but not limited to, the connection member 314 includes a first connection plate 318 and a second connection plate 319, and the pulling end 313 is partially located between the first connection plate 318 and the second connection plate 319, so that the connection reliability of the connection member and the pulling end is ensured. The bolt passes through the connecting piece and is in threaded connection with the counterweight connecting rod, and the distance between the connecting piece and the counterweight connecting rod can be adjusted by rotating the bolt, so that the installation and the debugging of the large-scale horizontal heat treatment furnace door device are facilitated.
Further, the bolt 315 is screwed with a first nut 316 and a second nut 317, and the first nut 316 and the second nut 317 are located between the weight link 330 and the connecting member 314.
In the embodiment of the utility model, the first roller positioned above and the first roller positioned below are synchronously attached to the first side by rotating the first nut and the second nut in the process of driving the furnace door to move by the lifting steel wire rope, so that the stability of the movement of the furnace door is ensured.
Further, the end of the rotating member 310 connected with the first roller 311 is bent downward.
The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.
Claims (10)
1. The utility model provides a large-scale horizontal heat treatment furnace gate device which characterized in that, this large-scale horizontal heat treatment furnace gate device includes:
a furnace body provided with an opening;
the furnace door is used for opening and closing the opening, and is fixedly connected with an upper baffle plate which is provided with a waist hole;
the two baffle rails are arranged on two sides of the furnace door, the lower part of the baffle rail is provided with a lower baffle plate, and the lower baffle plate is positioned on the descending path of the furnace door;
opening and closing mechanism: the device comprises two opening and closing mechanisms, wherein the two opening and closing mechanisms are positioned on two sides of a furnace door, the opening and closing mechanisms comprise a plurality of rotating parts which rotate synchronously, the rotating parts are connected with one side of the furnace door in a rotating way through a rotating shaft, the rotating parts are connected with first idler wheels in a rotating way, the rotating parts are provided with lifting ends, the lifting ends are respectively connected with counterweight connecting rods in a rotating way, the first idler wheels and the counterweight connecting rods are positioned on two sides of the rotating shaft, the first idler wheels roll on baffle rails, the counterweight connecting rods pass through waist holes, one side of each counterweight connecting rod, which is close to an upper baffle, is connected with a baffle block in an adjustable position, the baffle block is positioned between the upper baffle and a lower baffle, and the outer diameter of the baffle block is larger than the width of each waist hole; and
a lifting steel wire rope for lifting the counterweight connecting rod,
the lifting steel wire rope lifts the counterweight connecting rod, so that the furnace door firstly translates along the horizontal direction to open the opening, and then lifts along the vertical direction after the furnace door is away from the opening to a set distance.
2. The large horizontal heat treatment furnace door device according to claim 1, wherein the upper baffle is rotatably connected with a second roller, the first roller and the second roller are positioned on two opposite sides of the baffle rail, and the horizontal distance between the first roller and the second roller is larger than the width of the baffle rail.
3. The furnace door device of the large horizontal heat treatment furnace according to claim 1, wherein a fixed seat is fixedly connected to the bottom of the furnace door, a plurality of third rollers are rotatably connected to one side of the fixed seat facing the lower baffle, and the lower baffle is located under the third rollers.
4. The furnace door device of the large horizontal heat treatment furnace according to claim 1, wherein the baffle rail is fixedly connected with a plurality of air cylinders, the air cylinders synchronously act, and the air cylinders are used for driving the furnace door to cling to the furnace body.
5. The furnace door device of a large horizontal heat treatment furnace according to claim 4, wherein the furnace door is fixedly connected with a pushing plate, and the pushing plate faces the air cylinder.
6. The furnace door device of the large horizontal heat treatment furnace according to claim 4, wherein the furnace door is fixedly connected with a trigger block, the baffle rail is provided with a travel switch,
when the furnace door descends to the lowest position, the trigger block triggers the travel switch, and the air cylinder pushes the furnace door to cling to the furnace body.
7. The large horizontal heat treatment furnace door device according to claim 1, wherein one end of the counterweight connecting rod, which is close to the upper baffle plate, is fixedly connected with a connecting rod, an adjusting nut is in threaded connection with the connecting rod, one side of the adjusting nut, which faces the upper baffle plate, is fixedly connected with the stop block, one end of the connecting rod, which passes through the waist hole, is fixedly connected with a connecting stop seat, and the lifting steel wire rope lifts the connecting stop seat.
8. The furnace door device of a large horizontal heat treatment furnace according to claim 1, wherein a connecting piece is rotatably connected to a pulling end of the rotating piece at the bottom, and a bolt passes through the connecting piece and is in threaded connection with the counterweight connecting rod.
9. The large horizontal heat treatment furnace door apparatus according to claim 8, wherein the bolt is screwed with a first nut and a second nut, both of the first nut and the second nut being located between the weight link and the connecting member.
10. The furnace door device of a large horizontal heat treatment furnace according to claim 1, wherein the end of the rotating member to which the first roller is connected is bent downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321330611.3U CN219689798U (en) | 2023-05-29 | 2023-05-29 | Large horizontal heat treatment furnace door device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321330611.3U CN219689798U (en) | 2023-05-29 | 2023-05-29 | Large horizontal heat treatment furnace door device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219689798U true CN219689798U (en) | 2023-09-15 |
Family
ID=87963600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321330611.3U Active CN219689798U (en) | 2023-05-29 | 2023-05-29 | Large horizontal heat treatment furnace door device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219689798U (en) |
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2023
- 2023-05-29 CN CN202321330611.3U patent/CN219689798U/en active Active
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