A propeller-type heating furnace for heating steel tube billets

Abstract

This utility model relates to the technical field of steel tube billet heating furnaces, specifically a propeller-type heating furnace for heating steel tube billets. It includes a base, a furnace body fixed to the top surface of the base, a billet body inside the furnace body, and multiple propulsion components on the top surface of the base. Each propulsion component includes two supports, with limiting blocks fixed to the side walls of the supports. A first slider is slidably connected to one limiting block, and a second slider is slidably connected to the other limiting block. A C-shaped block is positioned between the two supports, with a fixing block at the upper end of the C-shaped block. A bidirectional lead screw is located at the upper end of the fixing block, and a rotating shaft is located at the upper end of the bidirectional lead screw. Two conical blocks are fitted around the outer periphery of the rotating shaft. This design allows for timely adjustment of the height and lateral spacing of the conical blocks according to billet bodies of different diameters, improving the equipment's adaptability to billet body dimensions, increasing the production efficiency of steel tube billet heating, and meeting the propulsion requirements for steel tube billet heating.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe billet heating furnace technology, and in particular to a pusher-type heating furnace for heating steel pipe billets. Background Technology

[0002] In the field of steel tube billet heating, the propeller furnace is the key equipment for realizing continuous heating of tube billets. Its core lies in the stable conveying and adaptive adjustment of the tube billet by the propulsion system.

[0003] A search revealed a Chinese patent with publication number CN105112636A, which provides a pusher-type heating furnace for heating steel pipe billets. Because the furnace body is closed, no cold air enters the furnace from the time the billet enters to the time it exits, and a slight positive pressure is maintained. This results in less billet oxidation, less billet burn-off, less heat loss, more complete combustion of gas, and a shorter heating time.

[0004] However, during use, it was found that when faced with tube blanks of different diameters, it was difficult to quickly adjust the height and lateral spacing of the propulsion system. Usually, the machine had to be stopped for adjustment, which could easily lead to the inability to adapt to the conveying needs of tube blanks of different diameters in a timely manner, resulting in reduced production efficiency and difficulty in meeting the propulsion needs of heated steel tube blanks. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a propeller-type heating furnace for heating steel pipe billets. This allows for timely adjustment of the height and lateral spacing of the conical blocks according to the different diameters of the billet body, improving the equipment's adaptability to the billet body size, making the billet conveying process more continuous, reducing production interruption time, improving the production efficiency of steel pipe billet heating, and meeting the propulsion requirements for steel pipe billet heating.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a propeller-type heating furnace for heating steel pipe billets, comprising a base, a heating furnace body fixedly disposed on the top surface of the base, a billet body disposed inside the heating furnace body, and a plurality of propulsion components disposed on the top surface of the base;

[0007] The propulsion assembly includes two supports, each with a limiting block fixed to its side wall. A first slider is slidably connected to one of the limiting blocks, and a second slider is slidably connected to the other limiting block. A C-shaped block is provided between the two supports, with a fixing block at the upper end of the C-shaped block. A bidirectional lead screw is provided at the upper end of the fixing block, and a rotating shaft is provided at the upper end of the bidirectional lead screw. Two conical blocks are fitted on the outer peripheral wall of the rotating shaft, and the outer peripheral walls of the two conical blocks are in frictional contact with the outer peripheral wall of the tube blank body.

[0008] Preferably, the top surface of the C-shaped block is fixed with an insert, and the bottom surfaces of the first slider and the second slider are respectively inserted into the insert through slots.

[0009] Preferably, the outer walls of the first slider and the second slider each have two insertion holes, and fastening bolts are inserted into the insertion holes. The two fastening bolts are threadedly connected to the insertion blocks respectively.

[0010] By loosening the fastening bolts and using the cooperation between the insert and the slot, the first and second sliders can be separated from the C-shaped block, thus achieving the disassembly and installation of the conical block.

[0011] Preferably, one end of the outer peripheral wall of the bidirectional lead screw and a portion of the outer peripheral wall of one end of the rotating shaft are rotatably connected to the first slider. Two servo motors are mounted on the first slider, and the output shafts of the two servo motors are coaxially connected to the bidirectional lead screw and the rotating shaft, respectively. One end of the fixing block is fixedly connected to the inner wall of the first slider.

[0012] The above technical solution involves a servo motor coaxially connected to the bidirectional lead screw to drive its rotation. Since the bidirectional lead screw is threadedly connected to the moving block on the fixed block, the moving block moves along the axial direction of the bidirectional lead screw. Another servo motor drives the rotating shaft to rotate, causing the conical block to rotate synchronously.

[0013] Preferably, the inner wall of the second slider is provided with multiple grooves, and the other ends of the bidirectional lead screw, the rotating shaft and the fixing block are respectively inserted into the corresponding grooves. The outer peripheral wall of the other end of the bidirectional lead screw and the outer peripheral wall of the other end of the rotating shaft are respectively rotatably connected to the groove wall.

[0014] The above technical solution facilitates the installation and disassembly of the bidirectional lead screw, rotating shaft, and fixing block through the groove.

[0015] Preferably, two movable blocks are slidably connected to the fixed block, and the two movable blocks are respectively threaded to a bidirectional lead screw.

[0016] Preferably, a limiting groove is formed on the outer peripheral wall of the rotating shaft, and two positioning blocks are slidably connected inside the limiting groove. The outer wall of the positioning block is fixedly connected to the conical block.

[0017] Preferably, a sleeve is fixedly connected to the outer wall of the conical block, the upper end of the moving block is rotatably connected to the outer peripheral wall of the sleeve, and the inner wall of the sleeve is rotatably connected to the outer peripheral wall of the rotating shaft.

[0018] Through the above technical solution, the upper end of the moving block is rotatably connected to the outer peripheral wall of the sleeve on the outer side of the conical block, and the inner wall of the sleeve is rotatably connected to the rotating shaft. The limiting groove on the outer peripheral wall of the rotating shaft is slidably engaged with the positioning block on the conical block, thereby driving the two conical blocks to move closer or further away from each other along the axial direction of the rotating shaft, so as to realize the lateral spacing adjustment.

[0019] Preferably, a push block is fixedly provided on the outer wall of the C-shaped block, and a cylinder is provided on one side of the push block. The piston rod of the cylinder is fixedly connected to the push block, and the cylinder is installed on the top surface of the base.

[0020] Through the above technical solution, the cylinder piston rod extends and retracts to push the push block, which drives the C-shaped block, the fixed block, the two-way lead screw, the rotating shaft and the conical block to move up and down as a whole. The first slider and the second slider slide synchronously on the limit block to complete the height adjustment.

[0021] Preferably, one of the C-shaped blocks and the equipment on it are arranged in opposite directions, and a connecting seat is provided between the two brackets, the side wall of the connecting seat being fixed to one of the cylinders.

[0022] The above technical solution enables the conical blocks at both ends of the tube blank to better fit the outer peripheral wall of the tube blank, and applies friction force evenly during advancement, thereby enhancing the conveying stability of the tube blank.

[0023] The beneficial effects of this utility model are:

[0024] The first and second sliders slide on the limiting block, cooperating with the C-shaped block to adjust the height of the conical block. After adjustment, the outer peripheral wall of the conical block is in close frictional contact with the outer peripheral wall of the billet body. Through the frictional force generated by the rotation of the conical block, the billet body is pushed into the heating furnace body, completing the conveying of the billet body. This allows for timely adjustment of the height and lateral spacing of the conical blocks according to billet bodies of different diameters, improving the equipment's adaptability to billet body dimensions, avoiding frequent shutdowns due to adjusting the propulsion system, making the billet conveying process more continuous, reducing production interruption time, improving the production efficiency of steel billet heating, and meeting the propulsion requirements of steel billet heating. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the C-shaped block structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the assembly of the second slider structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the conical block structure of this utility model.

[0029] In the picture: 100, base;

[0030] 200. Heating furnace body;

[0031] 300. Tube blank body;

[0032] 400. Propulsion assembly; 401. Bracket; 402. Limiting block; 403. First slider; 404. Second slider; 405. C-shaped block; 406. Insertion block; 407. Slot; 408. Fixing block; 409. Bidirectional lead screw; 410. Rotating shaft; 411. Conical block; 412. Insertion hole; 413. Fastening bolt; 414. Servo motor; 415. Groove; 416. Moving block; 417. Limiting groove; 418. Positioning block; 419. Sleeve; 420. Push block; 421. Cylinder; 422. Connecting seat. Detailed Implementation

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-4 As shown, this embodiment provides a pusher-type heating furnace for heating steel pipe billets, including a base 100, a heating furnace body 200 fixed on the top surface of the base 100, a billet body 300 inside the heating furnace body 200, and a plurality of pusher components 400 respectively on the top surface of the base 100.

[0035] The propulsion assembly 400 includes two supports 401. A limiting block 402 is fixedly provided on the side wall of the support 401. A first slider 403 is slidably connected to one limiting block 402, and a second slider 404 is slidably connected to the other limiting block 402. A C-shaped block 405 is provided between the two supports 401. A fixing block 408 is provided at the upper end of the C-shaped block 405. A bidirectional lead screw 409 is provided at the upper end of the fixing block 408. A rotating shaft 410 is provided at the upper end of the bidirectional lead screw 409. Two conical blocks 411 are sleeved on the outer peripheral wall of the rotating shaft 410. The outer peripheral walls of the two conical blocks 411 are in frictional contact with the outer peripheral wall of the tube blank body 300.

[0036] A plug 406 is fixed on the top surface of the C-shaped block 405. The bottom surfaces of the first slider 403 and the second slider 404 are respectively inserted into the plug 406 through slots 407. The outer walls of the first slider 403 and the second slider 404 are respectively provided with two insertion holes 412. Fastening bolts 413 are inserted into the insertion holes 412. The two fastening bolts 413 are respectively threaded to the plug 406. By loosening the fastening bolts 413, the first slider 403 and the second slider 404 are separated from the C-shaped block 405 through the cooperation of the plug 406 and the slot 407, so as to realize the disassembly and installation of the cone block 411.

[0037] One end of the outer peripheral wall of the bidirectional lead screw 409 and a portion of the outer peripheral wall of one end of the rotating shaft 410 are rotatably connected to the first slider 403. Two servo motors 414 are mounted on the first slider 403. The output shafts of the two servo motors 414 are coaxially connected to the bidirectional lead screw 409 and the rotating shaft 410, respectively. One end of the fixed block 408 is fixedly connected to the inner wall of the first slider 403. The bidirectional lead screw 409 is driven to rotate by the servo motor 414 coaxially connected to it. Since the bidirectional lead screw 409 is threadedly connected to the moving block 416 on the fixed block 408, the moving block 416 moves along the axial direction of the bidirectional lead screw 409. The rotating shaft 410 is driven to rotate by the other servo motor 414, so that the conical block 411 rotates synchronously.

[0038] The inner wall of the second slider 404 has multiple grooves 415. The other ends of the bidirectional lead screw 409, the rotating shaft 410 and the fixing block 408 are respectively inserted into the corresponding grooves 415. The outer peripheral wall of the other end of the bidirectional lead screw 409 and the outer peripheral wall of the other end of the rotating shaft 410 are respectively rotatably connected to the groove wall of the groove 415. The grooves 415 facilitate the installation and disassembly of the bidirectional lead screw 409, the rotating shaft 410 and the fixing block 408.

[0039] Two movable blocks 416 are slidably connected to the fixed block 408. The two movable blocks 416 are threadedly connected to the bidirectional lead screw 409. A limit groove 417 is opened on the outer peripheral wall of the rotating shaft 410. Two positioning blocks 418 are slidably connected inside the limit groove 417. The outer wall of the positioning block 418 is fixedly connected to the conical block 411. A sleeve 419 is fixedly connected to the outer wall of the conical block 411. The upper end of the movable block 416 is rotatably connected to the outer peripheral wall of the sleeve 419. The inner wall of the sleeve 419 is rotatably connected to the outer peripheral wall of the rotating shaft 410. The upper end of the movable block 416 is rotatably connected to the outer peripheral wall of the sleeve 419 on the outer wall of the conical block 411. The inner wall of the sleeve 419 is rotatably connected to the rotating shaft 410. The limit groove 417 on the outer peripheral wall of the rotating shaft 410 is slidably engaged with the positioning block 418 on the conical block 411, thereby driving the two conical blocks 411 to move closer or further apart along the axial direction of the rotating shaft 410, realizing the adjustment of the lateral spacing.

[0040] A push block 420 is fixedly provided on the outer wall of the C-shaped block 405. A cylinder 421 is provided on one side of the push block 420. The piston rod of the cylinder 421 is fixedly connected to the push block 420. The cylinder 421 is installed on the top surface of the base 100. The piston rod of the cylinder 421 extends and retracts to push the push block 420, thereby driving the C-shaped block 405, the fixed block 408, the bidirectional lead screw 409, the rotating shaft 410, and the conical block 411 to move up and down as a whole. The first slider 403 and the second slider 404 slide synchronously on the limiting block 402 to complete the height adjustment.

[0041] One of the C-shaped blocks 405 and the equipment on it are arranged in opposite directions. A connecting seat 422 is provided between the two supports 401. The side wall of the connecting seat 422 is fixed to one of the cylinders 421. This allows the conical blocks 411 at the upper and lower ends of the tube blank body 300 to better fit the outer peripheral wall of the tube blank body 300, and to apply friction force evenly during the advancement, thereby enhancing the conveying stability of the tube blank body 300.

[0042] Working principle: When the tube blank body 300 needs to be pushed forward, the bidirectional lead screw 409 in the pushing assembly 400 rotates, thereby driving the two conical blocks 411 to move along the axial direction of the rotating shaft 410 and adjusting the distance between them; at the same time, the first slider 403 and the second slider 404 slide on the limiting block 402, and cooperate with the C-shaped block 405 to realize the adjustment of the height of the conical block 411.

[0043] After adjustment, the outer peripheral wall of the conical block 411 is in close frictional contact with the outer peripheral wall of the billet body 300. The frictional force generated by the rotation of the conical block 411 pushes the billet body 300 into the heating furnace body 200, completing the conveying of the billet body 300. This allows for real-time adjustment of the height and lateral spacing of the conical block 411 according to billet bodies 300 of different diameters, improving the equipment's adaptability to the size of the billet body 300. It avoids frequent shutdowns due to adjustments to the propulsion system, making the billet conveying process more continuous, reducing production interruption time, improving the production efficiency of steel billet heating, and meeting the propulsion requirements of steel billet heating.

[0044] When the height of the conical block 411 needs to be adjusted, the piston rod of the cylinder 421 extends and retracts to push the push block 420, which drives the C-shaped block 405, the fixing block 408, the double-acting screw 409, the rotating shaft 410, and the conical block 411 to move up and down as a whole. The first slider 403 and the second slider 404 slide synchronously on the limiting block 402 to complete the height adjustment. During this process, the fastening bolts 413 in the insertion holes 412 on the outer walls of the first slider 403 and the second slider 404 remain tightened to ensure that the first slider 403, the second slider 404, and the C-shaped block 405 are firmly connected.

[0045] When it is necessary to replace the conical block 411 of different sizes, loosen the fastening bolt 413, and through the cooperation of the insert 406 and the slot 407, separate the first slider 403 and the second slider 404 from the C-shaped block 405 respectively, so as to realize the disassembly and installation of the conical block 411.

[0046] When it is necessary to adjust the lateral spacing of the conical blocks 411, the servo motor 414, which is coaxially connected to the bidirectional lead screw 409, drives the bidirectional lead screw 409 to rotate. Since the bidirectional lead screw 409 is threadedly connected to the moving block 416 on the fixed block 408, the moving block 416 moves along the axial direction of the bidirectional lead screw 409. At the same time, the upper end of the moving block 416 is rotatably connected to the outer peripheral wall of the sleeve 419 on the outer side of the conical block 411. The inner wall of the sleeve 419 is rotatably connected to the rotating shaft 410. The limiting groove 417 on the outer peripheral wall of the rotating shaft 410 is slidably engaged with the positioning block 418 on the conical block 411, thereby driving the two conical blocks 411 to move closer or further away from each other along the axial direction of the rotating shaft 410, so as to realize the adjustment of the lateral spacing.

[0047] After adjustment, another servo motor 414 drives the rotating shaft 410 to rotate, so that the conical block 411 rotates synchronously. Using the friction between the outer peripheral wall of the conical block 411 and the outer peripheral wall of the tube blank body 300, the tube blank body 300 is pushed into the heating furnace body 200.

[0048] One of the C-shaped blocks 405 and its equipment are arranged in opposite directions, so that during the pushing process, the conical blocks 411 located at both ends of the tube blank body 300 are pushed symmetrically, so that the conical blocks 411 at both ends of the tube blank body 300 better fit the outer peripheral wall of the tube blank body 300, and apply friction force evenly during the pushing process, thereby enhancing the conveying stability of the tube blank body 300 and ensuring the smooth conveying of the tube blank body 300 inside the heating furnace body 200.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pusher-type heating furnace for heating a steel pipe billet, characterized by, include: A base (100) is provided with a heating furnace body (200) fixed on the top surface of the base (100), and a tube blank body (300) is provided inside the heating furnace body (200). A plurality of propulsion components (400) are provided on the top surface of the base (100). The propulsion assembly (400) includes two supports (401). A limiting block (402) is fixedly provided on the side wall of the support (401). A first slider (403) is slidably connected to one of the limiting blocks (402), and a second slider (404) is slidably connected to the other limiting block (402). A C-shaped block (405) is provided between the two supports (401). A fixing block (408) is provided at the upper end of the C-shaped block (405). A bidirectional lead screw (409) is provided at the upper end of the fixing block (408). A rotating shaft (410) is provided at the upper end of the bidirectional lead screw (409). Two conical blocks (411) are sleeved on the outer peripheral wall of the rotating shaft (410). The outer peripheral walls of the two conical blocks (411) are in frictional contact with the outer peripheral wall of the tube blank body (300).

2. The pusher-type heating furnace for heating a steel pipe billet according to claim 1, characterized by: The top surface of the C-shaped block (405) is fixed with an insert (406), and the bottom surfaces of the first slider (403) and the second slider (404) are respectively inserted into the insert (406) through slots (407).

3. The pusher-type heating furnace for heating a steel pipe billet according to claim 2, characterized by: The outer walls of the first slider (403) and the second slider (404) are respectively provided with two insertion holes (412), and fastening bolts (413) are inserted into the insertion holes (412). The two fastening bolts (413) are respectively threaded to the insertion block (406).

4. The pusher-type heating furnace for heating a steel pipe billet according to claim 3, characterized by: One end of the outer peripheral wall of the bidirectional lead screw (409) and a portion of the outer peripheral wall of the rotating shaft (410) are rotatably connected to the first slider (403). Two servo motors (414) are installed on the first slider (403). The output shafts of the two servo motors (414) are coaxially connected to the bidirectional lead screw (409) and the rotating shaft (410) respectively. One end of the fixed block (408) is fixedly connected to the inner wall of the first slider (403).

5. The propeller-type heating furnace for heating steel tube billets as described in claim 4, characterized in that: The inner wall of the second slider (404) is provided with multiple grooves (415). The other ends of the bidirectional lead screw (409), the rotating shaft (410) and the fixing block (408) are respectively inserted into the corresponding grooves (415). The outer peripheral wall of the other end of the bidirectional lead screw (409) and the outer peripheral wall of the other end of the rotating shaft (410) are respectively rotatably connected to the groove wall of the groove (415).

6. The propeller-type heating furnace for heating steel tube billets as described in claim 2, characterized in that: Two movable blocks (416) are slidably connected to the fixed block (408), and the two movable blocks (416) are respectively threaded to the bidirectional lead screw (409).

7. The propeller-type heating furnace for heating steel tube billets as described in claim 6, characterized in that: The outer peripheral wall of the rotating shaft (410) has a limiting groove (417), and two positioning blocks (418) are slidably connected inside the limiting groove (417). The outer wall of the positioning block (418) is fixedly connected to the conical block (411).

8. The propeller-type heating furnace for heating steel tube billets as described in claim 7, characterized in that: The outer wall of the conical block (411) is fixedly connected to a sleeve (419), the upper end of the moving block (416) is rotatably connected to the outer peripheral wall of the sleeve (419), and the inner wall of the sleeve (419) is rotatably connected to the outer peripheral wall of the rotating shaft (410).

9. The propeller-type heating furnace for heating steel tube billets as described in claim 8, characterized in that: A push block (420) is fixedly provided on the outer wall of the C-shaped block (405). A cylinder (421) is provided on one side of the push block (420). The piston rod of the cylinder (421) is fixedly connected to the push block (420). The cylinder (421) is installed on the top surface of the base (100).

10. The pusher-type heating furnace for heating a steel pipe billet according to claim 9, characterized by: One of the C-shaped blocks (405) and the equipment on it are arranged in opposite directions, and a connecting seat (422) is provided between the two brackets (401). The side wall of the connecting seat (422) is fixed to one of the cylinders (421).

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