Heat treatment inclined bottom furnace for stainless steel pipe

Abstract

The utility model relates to a heat treatment inclined bottom furnace for stainless steel pipes, and relates to the technical field of stainless steel pipe machining, the heat treatment inclined bottom furnace comprises a feeding area and a heat treatment area, the feeding area comprises a feeding frame and a feeding table arranged on the feeding frame, and the heat treatment area comprises a plurality of heating chambers which are connected in sequence; a feeding port and a discharging port are formed in the portions, located at the head and the tail of the heat treatment area, of the heating chamber respectively, the feeding table is in butt joint with the feeding port, a walking ladder is erected on the feeding frame, a main lifting device is in lap joint with one side of the feeding frame, and an auxiliary lifting device is arranged on the main lifting device. The device has the characteristics of being convenient to operate and high in production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of production equipment for stainless steel pipes, and in particular to an inclined bottom furnace for heat treatment of stainless steel pipes. Background Art

[0002] Stainless steel seamless pipes need to be heat treated during processing. Currently, the main heating equipment includes inclined bottom heating furnace, walking beam heating furnace and ring heating furnace.

[0003] The inclined bottom heating furnace is built at a certain angle, with a large volume, and can heat treat steel billets in batches. The use of an inclined bottom heating furnace is a common and low-cost heat treatment method.

[0004] However, since the inclined bottom heating furnace is tilted as a whole and the aggregate area is at a higher position, a large number of steel billets are hoisted for operation. Although the hoisting operation has a large load-bearing capacity, the operation speed is slow. It takes a long time from packaging and fixing to hoisting to the aggregate area, and the efficiency is low. Utility Model Content

[0005] In order to make the replenishment turnover efficiency of a small amount of steel billets higher, the purpose of the present application is to provide an inclined bottom furnace for heat treatment of stainless steel pipes.

[0006] The present application provides a sloping bottom furnace for heat treatment of stainless steel pipes, which adopts the following technical solution:

[0007] A heat treatment inclined bottom furnace for stainless steel pipes, comprising a feeding area and a heat treatment area, wherein the feeding area comprises a feeding rack and a feeding platform arranged on the feeding rack, wherein the heat treatment area comprises a plurality of heating chambers connected in sequence, wherein the heating chambers at the head and tail of the heat treatment area are respectively provided with a feeding port and a discharging port, wherein the feeding platform is connected to the feeding port, wherein a walking ladder is arranged on the feeding rack, a main lifting device is overlapped on one side of the feeding rack, and an auxiliary lifting device is arranged on the main lifting device;

[0008] The main lifting device includes a main bracket and a main platform. The main bracket is provided with a main lifting drive mechanism for driving the main platform to rise and fall. The rising height of the main platform is not lower than the table height of the feed rack.

[0009] The auxiliary lifting device includes an auxiliary bracket and an auxiliary platform that can be moved onto the main platform. The auxiliary bracket is provided with an auxiliary lifting drive mechanism that drives the auxiliary platform to rise and fall. The rising height of the auxiliary platform is not lower than the table height of the feed table.

[0010] By adopting the above technical scheme, the feeding area is used to store the steel billet raw materials to be heat treated, and the heat treatment area is used to periodically heat the steel billet raw materials fed in; the feeding platform on the feeding rack can carry a certain amount of steel billets and feed the steel billets in, and the feeding port of the heating chamber can be used for feeding the steel billets one by one; the main lifting device is set up and fixed on the side of the feeding rack in an overlapping manner, so that the position of the main lifting device is relatively fixed and stable; when in specific use, the auxiliary lifting device carries the steel billets through the auxiliary platform, and then the entire auxiliary lifting device is sent to the main platform. At this time, the main platform is raised by the main lifting drive mechanism and stops after reaching the height of the table surface of the feeding rack. At this time, the operator can walk onto the feeding rack and pull out the auxiliary lifting device. The auxiliary lifting device then raises the auxiliary platform through the auxiliary lifting drive mechanism to push the steel billets to the feeding platform; overall, the steel billets supplemented by the single body can be directly lifted by the lifting device for turnover, and the efficiency is improved.

[0011] Optionally, the main platform includes a material plate and a sliding plate which are connected in sequence, a transfer plate is slidably connected to the sliding plate along the width direction, and a sliding adjustment mechanism is provided on the transfer plate.

[0012] By adopting the above technical solution, the main platform is divided into multiple parts, with the aim of improving the convenience and safety of operation. The material plate plays the main role of supporting the steel billet and the auxiliary lifting device, and the operator can stand on the transfer plate, staggered from the position of the material plate, and can also leave the transfer plate directly without pushing the auxiliary lifting device. The movement of the transfer plate relies on a sliding adjustment mechanism to achieve gradual adjustment, and can remain relatively stable after adjustment.

[0013] Optionally, the sliding adjustment mechanism includes a translation tooth fixed on the sliding plate and a transfer gear rotatably connected to the transfer plate, and the transfer gear and the translation tooth are meshed.

[0014] By adopting the above technical solution, the specific adjustment method is realized by using translation teeth and transfer gears. The rotation of the transfer gear can drive the entire transfer plate, and the tooth transmission is relatively stable.

[0015] Optionally, a slide rail is provided on the sliding plate, and a slider sliding in the slide rail is provided on the transfer plate, and the slide rail has a sliding stroke limiting structure.

[0016] By adopting the above technical solution, the slider and the sliding inside the slide rail form a standard sliding structure, the sliding action is relatively smooth, and it plays a certain supporting role. In addition, one side of the slide rail has a travel limit structure, which can prevent the transfer plate from derailing.

[0017] Optionally, a safety fence is provided on the upper side of the transfer plate, a safety door is provided on the side of the safety fence adjacent to the material plate, a micro switch is provided on the safety fence, a lever is provided on the safety door that contacts the micro switch when closed, and a padlock is also provided between the safety fence and the safety door.

[0018] By adopting the above technical solution, the safety railing of the transfer plate can play a safety protection role and reduce the risk of people falling. After the safety door is closed, it will resist the micro switch. At this time, it is safer to operate the main lifting device for lifting, avoiding direct lifting without closing the safety door.

[0019] Optionally, a rotating plate is provided on the sub-platform, a supporting frame is provided on the rotating plate, a discharge plate is hingedly connected to one side of the supporting frame, and an electrically controlled telescopic member is rotatably connected between the discharge plate and the rotating plate.

[0020] By adopting the above technical solution, the support frame on the rotating plate plays a major supporting role for the steel billet. When unloading, the unloading plate can be flipped down to make it easier to take out the steel billet. The flipping down of the unloading plate is controlled by the electric control telescopic part, and the electric control operation is safer.

[0021] Optionally, two support rods are hingedly connected to the outer walls on both sides of the discharge plate along the width direction, and the ends of the support rods have U-shaped blocks for snapping into the support frame.

[0022] By adopting the above technical solution, the U-shaped block on the support rod can be flipped over and positioned on the unloading plate and inserted into the support frame, thereby improving the stability and bearing capacity of the unloading plate.

[0023] Optionally, an operating wheel rotatably connected to a worm and coaxially connected to the worm is provided on the auxiliary platform, and a worm wheel cooperating with the worm is provided on the bottom side of the rotating plate.

[0024] By adopting the above technical solution, the rotating plate on the sub-platform can rotate and adjust the orientation of the steel billet, which is more convenient during transportation without the need to rotate the entire sub-lifting device. During specific operation, the operator holds the operating wheel and rotates the operating wheel to drive the worm to rotate. The rotation of the worm drives the worm wheel. The worm wheel and worm can self-lock in reverse without the need for additional locking, thereby completing the rotation adjustment action, which is more convenient and labor-saving.

[0025] Optionally, the feed rack includes an extension plate extending to one side, and two side edges of the extension plate are for the material plate and the transfer plate to abut against each other.

[0026] By adopting the above technical solution, the extension plate at a specific corner of the feed rack can be adapted for use with the main lifting device. After the main lifting device rises to the specified position, the extension plate can simultaneously contact the outer edges of the material plate and the transfer plate, so it is safer for the operator to walk out.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. The turnover efficiency of single billet replenishment is improved, and the overall work efficiency is improved;

[0029] 2. Multi-point protection makes it safer for operators to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 3 It is a structural schematic diagram of the main lifting device and the auxiliary lifting device of an embodiment of the present application;

[0034] Figure 4 is a structural schematic diagram of a sliding adjustment mechanism embodied in an embodiment of the present application;

[0035] Figure 5 It is a schematic diagram of the structure of the auxiliary lifting device embodied in the embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of the auxiliary lifting device according to an embodiment of the present application.

[0037] In the figure, 1, feeding area; 11, feeding rack; 12, feeding platform; 13, extension plate; 2, heat treatment area; 21, heating chamber; 211, feeding port; 22, walking ladder; 3, main lifting device; 31, main bracket; 32, main platform; 321, material plate; 322, sliding plate; 3221, slide rail; 323, transfer plate; 3231, slider; 3232, safety fence; 3233, micro switch; 3234, lever; 3235 , safety door; 324, sliding adjustment mechanism; 3241, translation gear; 3242, transfer gear; 33, main lifting drive mechanism; 4, auxiliary lifting device; 41, auxiliary bracket; 42, auxiliary platform; 43, auxiliary lifting drive mechanism; 44, rotating plate; 45, support frame; 451, unloading plate; 452, electric telescopic part; 453, support rod; 454, U-shaped block; 46, worm; 47, worm wheel; 48, operating wheel; 5, steel billet. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0039] Embodiment: A sloping furnace for heat treatment of stainless steel pipes, referring to Figure 1 and Figure 2 , including a feeding area 1 and a heat treatment area 2, the feeding area 1 includes a feeding rack 11, a feeding platform 12 arranged on the feeding rack 11, the heat treatment area 2 includes a plurality of heating chambers 21 connected in sequence, the heating chambers 21 at the head and tail of the heat treatment area 2 are respectively provided with a feeding port 211 and a discharging port, the feeding platform 12 is connected to the feeding port 211, a walking ladder 22 is set on the feeding rack 11, a main lifting device 3 is connected to one side of the feeding rack 11, and an auxiliary lifting device is set on the main lifting device 3 4; The main lifting device 3 includes a main support 31 and a main platform 32. The main support 31 is provided with a main lifting drive mechanism 33 for driving the main platform 32 to rise and fall. The rising height of the main platform 32 is not lower than the table height of the feed rack 11; the auxiliary lifting device 4 includes an auxiliary support 41 and an auxiliary platform 42 that can be moved to the main platform 32. The auxiliary support 41 is provided with an auxiliary lifting drive mechanism 43 for driving the auxiliary platform 42 to rise and fall. The rising height of the auxiliary platform 42 is not lower than the table height of the feed table 12. The feed area 1 is used to store the raw materials of the steel billets 5 to be heat treated, and the heat treatment area 2 is used to periodically heat the raw materials of the steel billets 5 fed in; wherein the feed table 12 on the feed rack 11 can carry a certain amount of steel billets 5 and feed the steel billets 5 in, and the feed port 211 of the heating chamber 21 can allow the steel billets 5 to be fed in one by one; the main lifting device 3 is built and fixed on the side of the feed rack 11 in an overlapping manner, thereby making the position of the main lifting device 3 relatively fixed and stable; when in use, the auxiliary lifting device 4 carries the steel billets 5 through the auxiliary platform 42. The billet 5 is then sent to the main platform 32 through the auxiliary lifting device 4. At this time, the main platform 32 is raised by the main lifting drive mechanism 33, and stops after reaching the table height of the feed rack 11. At this time, the operator can walk to the feed rack 11 and pull out the auxiliary lifting device 4. The auxiliary lifting device 4 raises the auxiliary platform 42 through the auxiliary lifting drive mechanism 43, and can push the steel billet 5 to the feed table 12. Overall, the single-component steel billet 5 can be directly lifted by the lifting device for turnover, and the efficiency is improved.

[0040] refer to Figure 3 and Figure 4The main platform 32 includes a material plate 321 and a sliding plate 322 connected in sequence. A transfer plate 323 is slidably connected to the sliding plate 322 along the width direction. A sliding adjustment mechanism 324 is provided on the transfer plate 323. The main platform 32 is divided into multiple parts, the purpose of which is to improve the convenience and safety of operation. The material plate 321 plays the main role of supporting the steel billet 5 and the auxiliary lifting device 4, and the operator can stand on the transfer plate 323, staggered from the position of the material plate 321, and can also leave the transfer plate 323 directly without pushing the auxiliary lifting device 4. The movement of the transfer plate 323 is gradually adjusted by the sliding adjustment mechanism 324, and it can remain relatively stable after adjustment. The sliding adjustment mechanism 324 includes a translation tooth 3241 fixed on the sliding plate 322 and a transfer gear 3242 rotatably connected to the transfer plate 323, and the transfer gear 3242 and the translation tooth 3241 are meshed. The specific adjustment method is realized by using the translation gear 3241 and the transfer gear 3242. The rotation of the transfer gear 3242 can drive the entire transfer plate 323. The tooth transmission is relatively stable. The sliding plate 322 is provided with a slide rail 3221, and the transfer plate 323 is provided with a slider 3231 that slides in the slide rail 3221. The slide rail 3221 has a sliding stroke limit structure. The slider 3231 and the slide rail 3221 slide in a standard sliding structure, and the sliding action is relatively smooth and plays a certain supporting role. In addition, one side of the slide rail 3221 has a stroke limit structure, which can prevent the transfer plate 323 from derailing.

[0041] refer to Figure 3 , a safety fence 3232 is arranged around the transfer plate 323, a safety door 3235 is arranged on the side of the safety fence 3232 adjacent to the material plate 321, a micro switch 3233 is arranged on the safety fence 3232, and a lever 3234 is arranged on the safety door 3235 which contacts the micro switch 3233 when closed, and the lifting button can be started only after the micro switch 3233 is toggled, and the specific control logic is implemented by a PLC or a single-chip microcomputer, which is a prior art and will not be described in detail, and a padlock is also arranged between the safety fence 3232 and the safety door 3235. The safety fence 3232 of the transfer plate 323 can play a safety protection role and reduce the risk of personnel falling, and the safety door 3235 contacts the micro switch 3233 after closing, and it is safer to operate the main lifting device 3 for lifting at this time, so as to avoid directly starting the lifting without the safety door 3235 being closed properly.

[0042] refer to Figure 5, a rotating plate 44 is provided on the auxiliary platform 42, a support frame 45 is provided on the rotating plate 44, one side of the support frame 45 is hinged to a discharge plate 451, and an electric control telescopic member 452 is rotatably connected between the discharge plate 451 and the rotating plate 44. The support frame 45 on the rotating plate 44 plays a major supporting role for the steel billet 5. When discharging, the discharge plate 451 can be turned down to make it easier to take out the steel billet 5. The turning down of the discharge plate 451 is controlled by the electric control telescopic member 452, and the electric control operation is safer. All the above electric control parts are realized by a single chip microcomputer or a PLC. Two support rods 453 are hinged to the outer walls on both sides of the discharge plate 451 along its width direction, and the ends of the support rods 453 have U-shaped blocks 454 for clamping into the support frame 45. The U-shaped blocks 454 on the support rods 453 can be turned up on the discharge plate 451 to position and clamp into the support frame 45, thereby improving the stability and bearing capacity of the discharge plate 451. The auxiliary platform 42 is rotatably connected to a worm 46 and an operating wheel 48 coaxially connected to the worm 46, and a worm wheel 47 cooperating with the worm 46 is provided on the bottom side of the rotating plate 44. The rotating plate 44 on the auxiliary platform 42 can rotate and adjust the orientation of the steel billet 5, which is more convenient during transportation without the need to rotate the entire auxiliary lifting device 4. During specific operation, the operator holds the operating wheel 48 and drives the worm 46 to rotate by rotating the operating wheel 48. The rotation of the worm 46 drives the worm wheel 47. The worm wheel 47 and the worm 46 can reversely self-lock without additional locking, thereby completing the rotation adjustment action, which is more convenient and labor-saving.

[0043] refer to Figure 1 The table top of the feed rack 11 also includes an extension plate 13 extending to one side, and the two sides of the extension plate 13 are for the material plate 321 and the transfer plate 323 to abut against. The extension plate 13 at a specific corner of the feed rack 11 can be used with the main lifting device 3. After the main lifting device 3 rises to a specified position, the extension plate 13 can abut against the outer edges of the material plate 321 and the transfer plate 323 at the same time, so it is safer for the operator to walk out.

[0044] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat treatment inclined bottom furnace for stainless steel pipes, comprising a feeding area (1) and a heat treatment area (2), wherein the feeding area (1) comprises a feeding rack (11) and a feeding platform (12) arranged on the feeding rack (11), the heat treatment area (2) comprises a plurality of heating chambers (21) connected in sequence, the heating chambers (21) at the head and tail of the heat treatment area (2) are respectively provided with a feeding port (211) and a discharging port, the feeding platform (12) is connected to the feeding port (211), and a walking ladder (22) is arranged on the feeding rack (11), characterized in that: A main lifting device (3) is overlapped on one side of the feed rack (11), and an auxiliary lifting device (4) is provided on the main lifting device (3); The main lifting device (3) comprises a main support (31) and a main platform (32); the main support (31) is provided with a main lifting drive mechanism (33) for driving the main platform (32) to rise and fall; the rising height of the main platform (32) is not lower than the table height of the feed rack (11); The auxiliary lifting device (4) comprises an auxiliary bracket (41) and an auxiliary platform (42) that can be moved onto the main platform (32). The auxiliary bracket (41) is provided with an auxiliary lifting drive mechanism (43) that drives the auxiliary platform (42) to rise and fall. The rising height of the auxiliary platform (42) is not lower than the table surface height of the feeding table (12).

2. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 1, characterized in that: The main platform (32) comprises a material plate (321) and a sliding plate (322) which are connected in sequence. The sliding plate (322) is slidably connected with a transfer plate (323) along the width direction. The transfer plate (323) is provided with a sliding adjustment mechanism (324).

3. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 2, characterized in that: The sliding adjustment mechanism (324) comprises a translation tooth (3241) fixed on the sliding plate (322) and a transfer gear (3242) rotatably connected to the transfer plate (323), and the transfer gear (3242) is meshed with the translation tooth (3241).

4. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 3, characterized in that: The sliding plate (322) is provided with a sliding rail (3221), the transfer plate (323) is provided with a sliding block (3231) sliding in the sliding rail (3221), and the sliding rail (3221) has a sliding stroke limiting structure.

5. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 2, characterized in that: The transfer plate (323) is surrounded by a safety bar (3232), a safety door (3235) is provided on one side of the safety bar (3232) adjacent to the material plate (321), a micro switch (3233) is provided on the safety bar (3232), a lever (3234) that contacts the micro switch (3233) when closed is provided on the safety door (3235), and a padlock is also provided between the safety bar (3232) and the safety door (3235).

6. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 1, characterized in that: A rotating plate (44) is provided on the auxiliary platform (42), a supporting frame (45) is provided on the rotating plate (44), a discharge plate (451) is hingedly connected to one side of the supporting frame (45), and an electrically controlled telescopic member (452) is rotatably connected between the discharge plate (451) and the rotating plate (44).

7. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 6, characterized in that: The unloading plate (451) has two support rods (453) hingedly connected to the outer walls on both sides along the width direction thereof, and the ends of the support rods (453) have U-shaped clamping blocks (454) for clamping into the support frame (45).

8. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 6, characterized in that: The auxiliary platform (42) is rotatably connected to a worm (46) and an operating wheel (48) coaxially connected to the worm (46), and a worm wheel (47) cooperating with the worm (46) is provided on the bottom side of the rotating plate (44).

9. The inclined bottom furnace for heat treatment of stainless steel pipes according to claim 2, characterized in that: The feed rack (11) comprises an extension plate (13) extending to one side, and two side edges of the extension plate (13) are in contact with the material plate (321) and the transfer plate (323).

Images