External high-temperature lifting appliance device of pit furnace

Abstract

The utility model relates to a pit furnace external high-temperature lifting appliance device which comprises a lifting rod and a connecting rod, the connecting rod is detachably connected to the lifting rod, the top end of the lifting rod is used for being connected with a traveling crane, the connecting rod is used for penetrating through one end of a steel pipe, the connecting rod is connected with a locking assembly, and the locking assembly is used for locking the steel pipe to the connecting rod. Part of the suspenders are arranged outside the pit furnace, so that the heating amount of the suspenders entering the pit furnace along with the steel pipe is reduced, and energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of steel pipe production equipment, and in particular to a high-temperature hanger device outside a pit-type furnace. Background Art

[0002] At present, my country has become the country with the largest number of ultra-supercritical units in the world. A 1000MW unit (including ultra-supercritical steam boilers and four major pipelines of the power station) requires more than 1,300 tons of large-diameter thick-walled P92 seamless steel pipes, with an annual demand of about 20,000 tons. The production process of seamless steel pipes requires solid solution heat treatment, usually using a hoist to lift the stainless steel pipe into a high-temperature pit furnace for solid solution treatment.

[0003] The Chinese patent with the authorization announcement number CN203095402U discloses a hoisting device for hoisting stainless steel pipes into a pit furnace, including a main hoisting shaft, a lifting ear connection block installed at the upper end of the main hoisting shaft, a shutter fixed on the main hoisting shaft, a sliding sleeve mounted on the main hoisting shaft and fixedly connected to the lower hook plate of the shutter, a plurality of hook plates hinged to the upper end of the sliding sleeve, a plurality of sliding seats located below the sliding sleeve and mounted on the main hoisting shaft and hinged to the hook plates, and a lower fixed seat fixed to the lower end of the main hoisting shaft and hinged to the hook plates. The utility model is a hoisting device for hoisting stainless steel pipes into a pit furnace, which has a simple structure, low price, high working reliability and long service life.

[0004] With respect to the above-mentioned related technologies, the entire hanger and the steel pipe are heated in a pit furnace simultaneously, which increases the amount of heated workpieces and further increases energy consumption. Utility Model Content

[0005] In order to reduce the amount of workpieces heated by a pit-type furnace and reduce energy consumption, the present application provides a high-temperature hoisting device outside a pit-type furnace.

[0006] The present application provides a high-temperature hanging device outside a pit furnace, which adopts the following technical solution:

[0007] A high-temperature hanging device outside a pit-type furnace includes a hanging rod and a connecting rod. The length direction of the hanging rod is consistent with the vertical direction. The connecting rod is horizontally arranged. The connecting rod is detachably connected to the bottom end of the hanging rod. The top end of the hanging rod is used to be connected to a crane. The connecting rod is used to pass through one end of a steel pipe. The connecting rod is connected to a locking assembly, and the locking assembly is used to lock the steel pipe to the connecting rod.

[0008] By adopting the above technical solution, during use, the connecting rod passes through the steel pipe and is connected to the hanging rod, so as to hoist the steel pipe. The steel pipe is transported into the pit furnace by a traveling crane. After the pit furnace is closed, the connecting rod, the bottom end of the hanging rod and the steel pipe enter the pit furnace at the same time, and part of the hanging rod is outside the pit furnace, thereby reducing the amount of the hanging rod entering the pit furnace for heating with the steel pipe and reducing the energy consumption.

[0009] Optionally, a connection hole for the connecting rod to pass through is provided at the bottom end of the hanging rod. The length direction of the connection hole is the same as the length direction of the connecting rod. A limiting block is connected in the connection hole. A limiting groove is provided on the circumferential side of the connecting rod. The length direction of the limiting groove is the same as the length direction of the connecting rod. The limiting block is slidably connected in the limiting groove along the length direction of the connecting rod.

[0010] By adopting the above technical solution, when disassembling and assembling the connecting rod, move the connecting rod along the length direction of the connecting rod, so that the connecting rod passes through or moves away from the connection hole, and a limiting block is added, so that the connecting rod moves stably along a predetermined direction.

[0011] Optionally, mounting holes are provided on the circumferential sides of both ends of the connecting rod. The length direction of the mounting holes is the same as the radial direction of the connecting rod. There are two locking assemblies. The two locking assemblies are respectively arranged at both ends of the connecting rod. The locking assembly includes a screw rod and a nut. The screw rod passes through the mounting hole along the length direction of the mounting hole. The nut is threadedly connected to the screw rod. The two screw rods are respectively arranged on both sides of the steel pipe. The screw rod is used to contact the outer circumferential wall of the steel pipe.

[0012] By adopting the above technical solution, after the connecting rod passes through the steel pipe and the connection hole along its length direction, the screw rod passes through the mounting hole along the length direction of the mounting hole and is connected to the nut, so that the two screw rods are arranged on both sides of the steel pipe, and the two screw rods limit the steel pipe, so that the steel pipe is stably connected to the connecting rod.

[0013] Optionally, a plurality of mounting holes are provided at both ends of the connecting rod. The mounting holes are sequentially and spaced apart along the length direction of the connecting rod.

[0014] By adopting the above technical solution, when the diameters of the steel pipes hoisted by the lifting appliance are different, adjust the corresponding mounting holes through which the screw rods pass according to the diameter of the steel pipe, so as to adapt to steel pipes of different sizes.

[0015] Optionally, the connecting rod includes a sleeve rod and a rotating rod. The length direction of the rotating rod is the same as that of the sleeve rod. The sleeve rod is sleeved on the rotating rod, and the rotating rod is rotatably connected inside the sleeve rod. There are two locking components, and the two locking components are respectively arranged at both ends of the connecting rod along its length direction. Installation grooves are formed on the circumferential sides of both ends of the rotating rod, and the length direction of the installation groove is the same as the radial direction of the rotating rod. The installation grooves also correspond to the locking components one by one. The locking component includes a spring and a locking block. The length direction of the locking block is the same as the radial direction of the rotating rod, and the length direction of the spring is the same as the length direction of the installation groove. One end of the spring is connected to the inner wall of the installation groove along its length direction, and the other end of the spring is connected to the locking block. The locking block is slidably connected to the installation groove along the length direction of the installation groove. Locking holes are formed on the circumferential sides of both ends of the sleeve rod along its length direction. The locking block passes through the locking hole along its length direction, and the two locking blocks are respectively used to contact the outer circumferential walls on both sides of the steel pipe.

[0016] By adopting the above technical solution, during use, the locking block passes through the locking hole along its length direction, and the locking block contacts the outer circumferential wall of the steel pipe, so that the steel pipe is stably connected to the connecting rod. When disassembling the steel pipe, push the locking block along the radial direction of the rotating rod to make the locking block away from the locking hole, and rotate the rotating rod, so that the installation groove is away from the locking hole, which is convenient for disassembling the connecting rod from the hanging rod.

[0017] Optionally, a guiding surface is provided on one circumferential side of the locking block along the rotating rod, and the guiding surface facilitates the locking block to move away from the locking hole.

[0018] By adopting the above technical solution, the guiding surface is added, which makes it more convenient for the locking block to move away from the locking hole.

[0019] Optionally, the rotating rod is arranged as a telescopic rod, and the rotating rod is telescopically arranged along its length direction. There are several locking holes, and the several locking holes are sequentially and spaced apart along the length direction of the sleeve rod.

[0020] By adopting the above technical solution, the rotating rod is arranged as a telescopic rod. The rotating rod is telescoped according to the diameter of the hoisted steel pipe, so as to change the position of the locking block on the rotating rod, and according to the diameter of the hoisted steel pipe, align the locking block with the locking hole at the corresponding position, and the locking block passes through the locking hole, so that the steel pipe is stably connected to the connecting rod, so as to adapt to steel pipes of different sizes.

[0021] Optionally, the rotating rod includes a sleeve and a support rod. The length of the support rod is consistent with the length direction of the sleeve. There are two support rods, and the two support rods are spaced apart along the length direction of the support rod. The sleeve is disposed between the two support rods. The two ends of the sleeve along its length direction are respectively sleeved on the two support rods. The central axis of the sleeve is collinear with the central axis of the support rod. The support rod is slidably connected to the sleeve along its length direction. The support rod is slidably connected within the sleeve, and the installation groove is opened on the circumferential side of the support rod.

[0022] By adopting the above technical solution, when the diameters of the hoisted steel pipes are different, the support rod is moved along the length direction of the support rod, thereby driving the locking block to move, so that the locking block is aligned with the locking hole at the corresponding position, thereby adapting to steel pipes of different sizes.

[0023] Optionally, an annular groove is opened on the inner wall of the sleeve rod. The central axis of the annular groove is collinear with the central axis of the connection hole. The sleeve is disposed within the annular groove. The two ends of the sleeve along its length direction are respectively in contact with the inner walls at both ends of the annular groove.

[0024] By adopting the above technical solution, during use, the sleeve is disposed within the annular groove, thereby enabling the support rod to be stably connected within the sleeve rod.

[0025] Optionally, handles are connected to the ends of the support rods away from the sleeve.

[0026] By adopting the above technical solution, the addition of handles facilitates the operator to rotate the rotating rod.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. During use, the connecting rod passes through the steel pipe and is connected to the hanging rod to hoist the steel pipe. The steel pipe is transported into the pit furnace by the overhead crane. After the pit furnace is closed, the connecting rod, the bottom end of the hanging rod, and the steel pipe enter the pit furnace simultaneously. Part of the hanging rod is outside the pit furnace, thereby reducing the amount of the hanging rod entering the pit furnace for heating with the steel pipe and reducing energy consumption.

[0029] 2. After the connecting rod passes through the steel pipe and the connection hole along its length direction, the screw passes through the installation hole along the length direction of the installation hole and is connected to the nut, thereby enabling the two screws to be disposed on both sides of the steel pipe. The two screws limit the steel pipe, so that the steel pipe is stably connected to the connecting rod.

[0030] 3. During use, the locking block passes through the locking hole along its length direction, and the locking block is in contact with the outer circumferential wall of the steel pipe, thereby enabling the steel pipe to be stably connected to the connecting rod. When disassembling the steel pipe, the locking block is pushed along the radial direction of the rotating rod, so that the locking block is away from the locking hole, and the rotating rod is rotated, so that the installation groove is away from the locking hole, thereby facilitating the disassembly of the connecting rod from the hanging rod. Description of the Drawings

[0031] Figure 1 It is a three-dimensional structure diagram of Embodiment 1.

[0032] Figure 2 It is a cross-sectional view of Embodiment 1, used to show the limit block and the limit groove.

[0033] Figure 3 It is a cross-sectional view of Embodiment 1, used to show the locking assembly.

[0034] Figure 4 It is a three-dimensional structure diagram of Embodiment 2.

[0035] Figure 5 It is a cross-sectional view of Embodiment 2, used to show the support rod and the sleeve.

[0036] Figure 6 It is a cross-sectional view of Embodiment 2, used to show the locking assembly.

[0037] Explanation of reference numerals: 100, suspension rod; 110, connection hole; 120, limit block; 200, connecting rod; 210, limit groove; 220, mounting hole; 300, locking assembly; 310, screw; 320, nut; 330, spring; 340, locking block; 400, sleeve rod; 410, annular groove; 420, locking hole; 500, rotating rod; 510, sleeve; 520, support rod; 521, handle; 530, mounting groove. Detailed implementation manners

[0038] The following further elaborates on this application in conjunction with the attached Figure 1-6 drawings.

[0039] An embodiment of this application discloses a high-temperature lifting device outside a pit furnace. Referring to Figure 1 and Figure 2 , a high-temperature lifting device outside a pit furnace includes a suspension rod 100 and a connecting rod 200. The length direction of the suspension rod 100 is consistent with the vertical direction, and the top end of the suspension rod 100 is used to connect with a crane. The connecting rod 200 is horizontally arranged and is detachably connected to the bottom end of the suspension rod 100. The connecting rod 200 is used to pass through one end of a steel pipe.

[0040] When the steel pipe is heated, the connecting rod 200 and a part of the suspension rod 100 enter the pit furnace along with the steel pipe, and most of the suspension rod 100 is arranged outside the pit furnace, thereby reducing the amount of heated workpieces.

[0041] Referring to Figure 1 and Figure 2, a connection hole 110 for the connecting rod 200 to pass through is provided at the bottom end of the suspension rod 100, and the depth of the connection hole 110 is consistent with the length direction of the connecting rod 200. Limiting blocks 120 are connected to the inner walls on both radial sides of the connection hole 110, and the length direction of the limiting blocks 120 is consistent with the length direction of the connecting rod 200. A limiting groove 210 is provided on the circumferential side of the connecting rod 200, and the length direction of the limiting groove 210 is consistent with the rod length direction of the connecting rod 200. The limiting blocks 120 are slidably connected to the limiting groove 210 along the length direction of the connecting rod 200.

[0042] Refer to Figure 1 and Figure 3 , locking components 300 are connected to both ends of the connecting rod 200 along its length direction, and the locking components 300 are used to lock the steel pipe to the connecting rod 200. The locking component 300 includes a screw 310 and a nut 320. A plurality of mounting holes 220 for the screw 310 to pass through are provided on the circumferential sides of both ends of the connecting rod 200, and the depth direction of the mounting holes 220 is consistent with the radial direction of the connecting rod 200. The plurality of mounting holes 220 are sequentially spaced along the length direction of the connecting rod 200. The screw 310 passes through the mounting hole 220 along the depth direction of the mounting hole 220, and the nut 320 is threadedly connected to the screw 310. The two screws 310 are respectively arranged on both sides of the steel pipe, the steel pipe is arranged between the two screws 310, and the screw 310 is used to contact the outer walls on both radial sides of the steel pipe.

[0043] After the connecting rod 200 passes through the steel pipe, the screw 310 passes through the mounting hole 220 and is connected to the nut 320, so as to limit the steel pipe and make the steel pipe stably connected to the connecting rod 200.

[0044] The implementation principle of Embodiment 1 of the present application is as follows: During use, the connecting rod 200 passes through the steel pipe into the connection hole 110. At the same time, the limiting block 120 is slidably connected to the limiting groove 210 along the length direction of the connecting rod 200. After the connecting rod 200 passes through the steel pipe, the screw 310 passes through the corresponding mounting hole 220 and is connected to the nut 320, so that the steel pipe is stably connected to the connecting rod 200. The lifting tool hoists the steel pipe and transports the steel pipe into the pit furnace through the overhead crane. During heating, the connecting rod 200 and part of the suspension rod 100 are arranged in the pit furnace, so as to reduce the amount of workpieces heated in the pit furnace.

[0045] Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is:

[0047] Refer to Figure 4 and Figure 5, the connecting rod 200 includes a sleeve rod 400 and a rotating rod 500. The sleeve rod 400 is sleeved on the rotating rod 500. The central axis of the rotating rod 500 is collinear with the central axis of the sleeve rod 400. The length directions of the sleeve rod 400 and the rotating rod 500 are the same. The rotating rod 500 is rotatably connected within the sleeve rod 400. The peripheral wall of the sleeve rod 400 contacts the inner wall of the connection hole 110, and the limiting groove 210 is formed on the peripheral side of the sleeve rod 400.

[0048] Referring to Figure 4 and Figure 5 , the rotating rod 500 is provided as a telescopic rod. The rotating rod 500 includes a sleeve 510 and support rods 520. There are two support rods 520. The length direction of the support rods 520 is the same as the length direction of the sleeve rod 400. The two support rods 520 are sequentially and spaced apart along the length direction of the sleeve rod 400. The sleeve 510 is arranged between the two support rods 520, and both ends of the sleeve 510 in its length direction are respectively slidably sleeved on the closer ends of the two support rods 520. The support rods 520 are slidably connected within the sleeve 510 in their length directions. A handle 521 is connected to the end of the support rod 520 away from the sleeve 510. An annular groove 410 is formed on the inner wall of the sleeve rod 400. The central axis of the annular groove 410 is collinear with the central axis of the sleeve rod 400. The sleeve 510 is arranged within the annular groove 410, and both ends of the sleeve 510 in its length direction respectively contact the corresponding inner walls on both sides of the annular groove 410.

[0049] Referring to Figure 5 and Figure 6 , mounting grooves 530 are formed on the peripheral sides at both ends of the support rod 520. The length direction of the mounting grooves 530 is the same as the radial direction of the support rod 520. The mounting grooves 530 correspond to the locking components 300 one by one. The locking component 300 includes a spring 330 and a locking block 340. The length direction of the spring 330 is the same as the length direction of the mounting groove 530. One end of the spring 330 in its length direction is connected to the inner wall of the mounting groove 530, and the other end of the spring 330 is connected to the locking block 340. The length direction of the locking block 340 is the same as the radial direction of the rotating rod 500. The locking block 340 is slidably connected within the mounting groove 530 in the length direction of the mounting groove 530. A plurality of locking holes 420 for the locking block 340 to pass through are formed on the peripheral sides at both ends of the sleeve rod 400 in its length direction. The depth direction of the locking holes 420 is the same as the radial direction of the sleeve rod 400. The plurality of locking holes 420 are sequentially and spaced apart along the length direction of the sleeve rod 400 on the sleeve rod 400. A steel pipe is arranged between the two locking blocks 340. The two locking blocks 340 are respectively used to contact the outer circumferential walls on both sides of the steel pipe. A guiding surface is provided on one circumferential side of the locking block 340 along the circumferential direction of the rotating rod 500. The guiding surface is arranged at the end of the locking block 340 away from the spring 330, and the guiding surface is inclined. The guiding surface facilitates the locking block 340 to move away from the locking hole 420.

[0050] The implementation principle of Embodiment 2 of this application is as follows: When the connecting rod 200 passes through the steel pipe, the locking hole 420 is not communicated with the installation groove 530. After the connecting rod 200 passes through the steel pipe, the operator grabs the handle 521 and moves the support rod 520 along the length direction of the support rod 520 according to the size of the steel pipe, so as to drive the locking block 340 to move and approach the locking hole 420 at the corresponding position. Rotate the support rod 520 to make the locking block 340 approach the locking hole 420. When the installation groove 530 is communicated with the locking hole 420, the spring 330 pushes the locking block 340 through the locking hole 420, and the two locking blocks 340 are arranged on both sides of the steel pipe, so that the steel pipe is stably connected to the connecting rod 200.

[0051] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high-temperature hanging device outside a pit furnace, characterized in that: The invention comprises a suspension rod (100) and a connecting rod (200), wherein the length direction of the suspension rod (100) is consistent with the vertical direction, the connecting rod (200) is arranged horizontally, the connecting rod (200) is detachably connected to the bottom end of the suspension rod (100), the top end of the suspension rod (100) is used for connecting to a crane, the connecting rod (200) is used for passing through one end of a steel pipe, the connecting rod (200) is connected to a locking assembly (300), and the locking assembly (300) is used for locking the steel pipe to the connecting rod (200).

2. A high-temperature hanging device outside a pit-type furnace according to claim 1, characterized in that: A connecting hole (110) is provided at the bottom end of the suspension rod (100) for the connecting rod (200) to pass through, the length direction of the connecting hole (110) is consistent with the length direction of the connecting rod (200), a limiting block (120) is connected inside the connecting hole (110), a limiting groove (210) is provided on the peripheral side of the connecting rod (200), the length direction of the limiting groove (210) is consistent with the length direction of the connecting rod (200), and the limiting block (120) is slidably connected to the limiting groove (210) along the length direction of the connecting rod (200).

3. A high temperature hanging device outside a pit type furnace according to claim 2, characterized in that: Both ends of the connecting rod (200) are provided with mounting holes (220), the length direction of the mounting holes (220) is consistent with the radial direction of the connecting rod (200), two locking assemblies (300) are provided, and the two locking assemblies (300) are respectively arranged at the two ends of the connecting rod (200), and the locking assembly (300) comprises a screw rod (310) and a nut (320), the screw rod (310) passes through the mounting hole (220) along the length direction of the mounting hole (220), and the nut (320) is threadedly connected to the screw rod (310), and the two screw rods (310) are respectively arranged on both sides of the steel pipe, and the screw rod (310) is used to contact the outer circumferential wall of the steel pipe.

4. A high temperature hanging device outside a pit type furnace according to claim 3, characterized in that: A plurality of mounting holes (220) are provided at both ends of the connecting rod (200), and the mounting holes (220) are sequentially spaced and distributed along the length direction of the connecting rod (200).

5. The high-temperature hanging device outside the pit furnace according to claim 2, characterized in that: The connecting rod (200) comprises a sleeve rod (400) and a rotating rod (500). The length direction of the rotating rod (500) is consistent with the length direction of the sleeve rod (400). The sleeve rod (400) is sleeved on the rotating rod (500). The rotating rod (500) is rotatably connected to the sleeve rod (400). Two locking assemblies (300) are provided. The two locking assemblies (300) are respectively provided at two ends of the connecting rod (200) along the length direction thereof. The rotating rod (500) is provided with mounting grooves (530) on the circumference of both ends. The length direction of the mounting grooves (530) is consistent with the radial direction of the rotating rod (500). The mounting grooves (530) correspond to the locking assemblies (300) one by one. The locking assemblies (300) comprise springs (3 30), a locking block (340), wherein the length direction of the locking block (340) is consistent with the radial direction of the rotating rod (500), the length direction of the spring (330) is consistent with the length direction of the mounting groove (530), one end of the spring (330) along its length direction is connected to the inner wall of the mounting groove (530), and the other end of the spring (330) is connected to the locking block (340), and the locking block (340) is slidably connected in the mounting groove (530) along the length direction of the mounting groove (530), and the sleeve rod (400) is provided with locking holes (420) on both ends of the sleeve rod (400) along its length direction, and the locking block (340) passes through the locking holes (420) along its length direction, and the two locking blocks (340) are respectively used to contact the outer circumferential walls on both sides of the steel pipe.

6. A high temperature hanging device outside a pit type furnace according to claim 5, characterized in that: The locking block (340) is provided with a guide surface along one side of the circumference of the rotating rod (500), and the guide surface facilitates the locking block (340) to move away from the locking hole (420).

7. The high-temperature hanging device outside the pit furnace according to claim 6, characterized in that: The rotating rod (500) is a telescopic rod, and the rotating rod (500) is telescopically arranged along its length direction. A plurality of locking holes (420) are provided, and the plurality of locking holes (420) are sequentially spaced and distributed along the length direction of the sleeve rod (400).

8. The high-temperature hanging device outside the pit furnace according to claim 7, characterized in that: The rotating rod (500) comprises a sleeve (510) and a support rod (520). The length of the support rod (520) is consistent with the length direction of the sleeve (510). Two support rods (520) are provided. The two support rods (520) are spaced apart along the length direction of the support rod (520). The sleeve (510) is arranged between the two support rods (520). The sleeve (510) is sleeved on the two support rods (520) at both ends along the length direction. The central axis of the sleeve (510) is colinear with the central axis of the support rod (520). The support rod (520) is slidably connected to the sleeve (510) along the length direction. The support rod (520) is slidably connected to the sleeve (510). The mounting groove (530) is provided on the peripheral side of the support rod (520).

9. The high-temperature hanging device outside the pit furnace according to claim 8, characterized in that: The inner wall of the sleeve rod (400) is provided with an annular groove (410), the central axis of the annular groove (410) is colinear with the central axis of the connecting hole (110), the sleeve (510) is arranged in the annular groove (410), and the two ends of the sleeve (510) along the length direction are respectively in contact with the inner walls of the annular groove (410) at both ends.

10. The high-temperature hanging device outside the pit furnace according to claim 8, characterized in that: One end of the support rod (520) away from the sleeve (510) is connected to a handle (521).

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