Bearing steel pipe blank heating furnace

Abstract

The utility model relates to bearing steel pipe heating technical field, and disclose a kind of bearing steel pipe heating furnace, including heating furnace, heating element, first open furnace door hinged to the top end of heating furnace when heating, put material piece into furnace, the stress strip of connecting ring front end is inserted into steel pipe inside, rotate screw fixed rod terminal swivel, make screw fixed rod advance inwards using screw transmission, its front end moving end head pushes stress strip to overcome compression spring elasticity and expand outward, from inside hold steel pipe, prevent displacement, pass through control panel and start heating element installed on mounting block, realize stable even heating, and can real-time adjust parameter, simultaneously, rotate the handle of rotary cylinder, drive steel pipe rotation, make each part heat more evenly, after heating is completed, reverse rotation swivel and release hold, close heating element, take out material piece, and this heating furnace significantly improves heating quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing steel pipe heating technology, specifically a bearing steel pipe heating furnace. Background Technology

[0002] In the field of machinery manufacturing, bearings are key basic components, and their quality directly affects the operating performance and life of equipment. The heat treatment of bearing steel pipes is a crucial link in determining the quality of bearings. Reasonable heating can improve the microstructure and mechanical properties of steel pipes, laying the foundation for subsequent processing and the quality of finished bearings. Heating can refine grains and eliminate residual stress, giving steel pipes better strength, toughness and wear resistance, meeting the usage requirements under different working conditions.

[0003] However, traditional bearing steel tube heating furnaces have shortcomings in practical applications. On the one hand, the material fixing method of traditional heating furnaces is relatively simple, making it difficult to ensure stable clamping of the steel tubes during the heating process. This can easily lead to shaking or displacement, resulting in uneven heating, affecting the heat treatment effect of the steel tubes, and reducing the product qualification rate. On the other hand, traditional heating furnaces lack an effective rotary heating mechanism, resulting in uneven heating of various parts of the steel tubes. Local overheating or undercooling is common, which not only reduces heating quality and efficiency but also increases energy consumption and production costs. This cannot meet the requirements of modern high-precision and high-efficiency bearing production. Therefore, we propose a bearing steel tube heating furnace. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a heating furnace for bearing steel pipe components, which solves the aforementioned problems.

[0005] (II) Technical Solution To achieve the above-mentioned objectives, this utility model provides the following technical solution: a heating furnace for bearing steel pipe components, comprising a heating furnace and heating elements. The top of the heating furnace is hinged with symmetrical furnace doors. Multiple equidistantly distributed heating elements are arranged on the back of the interior of the heating furnace. Rotating cylinders are rotatably installed at both ends of the heating furnace. Threaded fixing rods are threaded into the ends of the rotating cylinders. Connecting rings are inserted into the front ends of the rotating cylinders and are fixedly connected by bolts. Four symmetrical force-bearing bars are arranged inside the front ends of the connecting rings. Symmetrical compression springs are arranged on the back of the force-bearing bars. The ends of the force-bearing bars are tightly fitted with the front ends of the threaded fixing rods. A transparent observation window is provided at the front end of the heating furnace, and a control panel is arranged on the right side of the transparent observation window.

[0006] Preferably, the inner back of the heating furnace is provided with multiple equally spaced and symmetrically distributed mounting blocks. Heating elements are provided on the mounting blocks, and the front end of the mounting blocks is fixedly installed with fasteners by bolts, thereby fixing the heating elements in place.

[0007] Preferably, the heating furnace has annular rotating holes at both ends, and the outer cylindrical surface of the rotating cylinder has annular rotating rings. The rotating cylinder passes through both ends of the heating furnace, and the rotating rings rotate in conjunction with the rotating holes. The outer cylindrical surface at the end of the rotating cylinder has an L-shaped handle.

[0008] Preferably, the end of the rotating cylinder has an internal thread, the cylindrical surface of the threaded fixing rod has an external thread, the front end of the threaded fixing rod is inserted into the interior of the rotating cylinder, the external thread of the threaded fixing rod and the internal thread of the rotating cylinder are engaged and connected, and the end of the threaded fixing rod is provided with a swivel.

[0009] Preferably, the front end of the rotating cylinder is provided with a circular connecting groove, and the end of the connecting ring is provided with a circular connecting block. The connecting block is inserted into the inside of the connecting groove and fixedly connected by bolts. The front end of the connecting ring is provided with four central axis symmetrical internal cavities. The internal cavities are respectively provided with force-bearing bars and compression springs, and the compression springs are located on the back of the force-bearing bars.

[0010] Preferably, the front end of the threaded fixing rod is provided with a frustum-shaped movable end, and the two ends of the force-bearing bar pass through the two ends of the connecting ring respectively, wherein the end of the force-bearing bar is in close contact with the inclined surface of the movable end.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a heating furnace for bearing steel pipe components, which has the following beneficial effects: 1. This bearing steel pipe heating furnace features precise and stable clamping to ensure heating stability. By rotating the ring at the end of the threaded fixing rod, the threaded fixing rod drives the frustum-shaped moving end to move inward. This pushes the force bar to overcome the elasticity of the compression spring, expanding outward from the inside of the bearing steel pipe and applying clamping force to firmly clamp the steel pipe. This clamping method prevents the material from shaking or shifting during the heating process, ensuring stable heating, reducing uneven heating caused by material movement, and improving product qualification rate.

[0012] 2. This bearing steel pipe heating furnace combines rotation and uniform heating to improve heating quality. Multiple equidistant heating elements inside the furnace can stably and evenly release heat, heating the material from all directions. At the same time, rotating the handle on the outer cylindrical surface of the rotating cylinder drives the clamped bearing steel pipe material to rotate, allowing all parts of the steel pipe to receive heat more evenly and avoiding local overheating or undercooling. Operators can also precisely adjust heating parameters through the control panel and monitor the heating status in real time through a transparent observation window, significantly improving heating quality and efficiency and meeting the needs of high-precision production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram showing the disassembled structure of this utility model.

[0015] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0016] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0017] Figure 5 This is a cross-sectional view of the heating furnace structure of this utility model.

[0018] In the diagram: 1. Furnace door; 2. Heating furnace; 3. Heating element; 4. Fixing component; 5. Threaded fixing rod; 6. Rotating cylinder; 7. Connecting ring; 8. Force-bearing strip; 9. Compression spring; 10. Rotating ring; 11. Moving end; 12. Rotating handle; 13. Rotating ring; 14. Connecting groove; 15. Connecting block; 16. Internal cavity; 17. Control panel; 18. Mounting block; 19. Rotating hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5 A heating furnace for bearing steel pipe components includes a heating furnace 2 and heating elements 3. The top of the heating furnace 2 is hinged with symmetrical furnace doors 1. Multiple heating elements 3 are equidistantly distributed on the back of the interior of the heating furnace 2. Rotating cylinders 6 are rotatably installed at both ends of the heating furnace 2. Threaded fixing rods 5 are threadedly engaged at the ends of the rotating cylinders 6. Connecting rings 7 are inserted into the front ends of the rotating cylinders 6 and are fixedly connected by bolts. Four symmetrical force-bearing bars 8 are arranged inside the front ends of the connecting rings 7. Symmetrical compression springs 9 are arranged on the back of the force-bearing bars 8. The ends of the force-bearing bars 8 are tightly engaged with the front ends of the threaded fixing rods 5. A transparent observation window is provided at the front end of the heating furnace 2, and a control panel 17 is provided on the right side of the transparent observation window.

[0021] Furthermore, the inner back of the heating furnace 2 is provided with multiple equally spaced and symmetrically distributed mounting blocks 18. Heating elements 3 are mounted on the mounting blocks 18. The front end of the mounting blocks 18 is fixedly mounted with fasteners 4 by bolts. The heating elements 3 are fixedly mounted by the fasteners 4 to ensure that the heating elements 3 are installed firmly and to achieve uniform and stable heating of the bearing steel pipe material.

[0022] Furthermore, the heating furnace 2 has annular rotating holes 19 at both ends, and the outer cylindrical surface of the rotating cylinder 6 has annular rotating rings 13. The rotating cylinder 6 passes through both ends of the heating furnace 2, and the rotating rings 13 are rotatably engaged with the rotating holes 19. The outer cylindrical surface of the end of the rotating cylinder 6 is provided with an L-shaped handle 12. The rotating holes 19 at both ends of the heating furnace 2 are engaged with the rotating rings 13 on the outer cylindrical surface of the rotating cylinder 6, and the handle 12 is used to make the rotating cylinder 6 rotate flexibly, providing a basic rotating structure for the rotating heating of the pipe fittings.

[0023] Furthermore, the end of the rotating cylinder 6 is provided with an internal thread, and the cylindrical surface of the threaded fixing rod 5 is provided with an external thread. The front end of the threaded fixing rod 5 is inserted into the interior of the rotating cylinder 6. The external thread of the threaded fixing rod 5 and the internal thread of the rotating cylinder 6 are connected to each other. The end of the threaded fixing rod 5 is provided with a rotating ring 10. Rotating the rotating ring 10 can control the movement of the threaded fixing rod 5, providing a power source for the subsequent pushing of the force bar 8.

[0024] Furthermore, the front end of the rotating cylinder 6 is provided with a circular connecting groove 14, and the end of the connecting ring 7 is provided with a circular connecting block 15. The connecting block 15 is inserted into the interior of the connecting groove 14 and fixedly connected by bolts. The front end of the connecting ring 7 is provided with four centrally symmetrical internal cavities 16. The internal cavities 16 are respectively provided with force-bearing bars 8 and compression springs 9. The compression springs 9 are located on the back of the force-bearing bars 8. The internal cavities 16 provide force-bearing bars 8 and compression springs 9, which realizes the structural connection while providing installation space and restoring elastic force for the force-bearing bars 8.

[0025] Furthermore, the front end of the threaded fixing rod 5 is provided with a frustum-shaped movable end 11, and the two ends of the force-bearing bar 8 pass through the two ends of the connecting ring 7 respectively. The end of the force-bearing bar 8 is in close contact with the inclined surface of the movable end 11. By pushing the movable end 11 forward, the axial movement of the threaded fixing rod 5 is converted into the radial expansion force of the force-bearing bar 8 by the inclined surface, thereby achieving the reinforcement and fixation of the inside of the bearing steel pipe fitting.

[0026] Structural Description: Furnace door 1: Furnace door 1 is hinged to the top of heating furnace 2 and has a symmetrical structure. It is used to open and close the heating furnace, facilitates the loading and unloading of bearing steel pipes and other materials, and ensures ease of operation. Heating furnace 2: Heating furnace 2 is the main structure for heating bearing steel pipe materials, providing a space for them. Related components are set at both ends and the back to realize the functions of heating and rotation. Heating element 3: Heating element 3 is installed on the mounting block 18 on the back of the inside of the heating furnace 2 and is fixed by the fastener 4 to provide a stable heat source for heating the bearing steel pipe material; Fixing component 4: Fixing component 4 is installed at the front end of mounting block 18 by bolts to securely fix heating element 3 and ensure its stable position during heating; Threaded fixing rod 5: The threaded fixing rod 5 is threadedly engaged with the rotating cylinder 6. Rotating the rotating ring 10 can make it move axially, providing power to push the force-bearing bar 8. Rotating cylinder 6: The rotating cylinder 6 is rotatably installed at both ends of the heating furnace 2. It has a rotating ring 13 that cooperates with the rotating hole 19. The rotating handle 12 drives the tube to rotate and heat. Connecting ring 7: Connecting ring 7 is inserted and fixed to the front end of rotating cylinder 6. The front end internal cavity 16 is used to install force-bearing strip 8, etc., to achieve structural connection and functional coordination. Force-bearing strip 8: Force-bearing strip 8 is set in the built-in cavity 16 at the front end of the connecting ring 7. It expands outward under the push of the moving end 11 to apply a bearing force to the inside of the bearing steel pipe. Compression spring 9: The compression spring 9 is located on the back of the force bar 8 and provides a restoring elastic force to the force bar 8 after the bearing force is removed; Rotary ring 10: Rotary ring 10 is located at the end of threaded fixing rod 5. By rotating rotary ring 10, the movement of threaded fixing rod 5 is controlled, thereby realizing the operation of force-bearing bar 8; Moving end 11: The moving end 11 is located at the front end of the threaded fixing rod 5 and is in the shape of a frustum. It converts the axial movement of the threaded fixing rod 5 into the radial expansion force of the force-bearing bar 8. Rotary handle 12: Rotary handle 12 is installed on the outer cylindrical surface of rotating cylinder 6. The operator rotates the rotating handle 12 to drive the rotating cylinder 6 and the pipe fittings to rotate and heat. Rotating ring 13: The rotating ring 13 is located on the outer cylindrical surface of the rotating cylinder 6 and rotates in conjunction with the rotating holes 19 at both ends of the heating furnace 2 to ensure smooth rotation of the rotating cylinder 6; Connecting groove 14: The connecting groove 14 is opened at the front end of the rotating cylinder 6 and cooperates with the connecting block 15 at the end of the connecting ring 7 to realize the fixed connection between the two. Connecting block 15: The connecting block 15 is located at the end of the connecting ring 7, inserted into the front connecting groove 14 of the rotating cylinder 6, and fixed by bolts to ensure the stable installation of the connecting ring 7; Built-in cavity 16: The built-in cavity 16 is located inside the front end of the connecting ring 7 and is used to install the force bar 8 and the compression spring 9, providing structural installation space and functional conditions; Control Panel 17: Control Panel 17 is located on the right side of the transparent observation window at the front of the heating furnace 2, and is used to control components such as the heating element 3 to adjust heating parameters; Mounting Block 18: Mounting Block 18 is distributed on the back of the interior of the heating furnace 2 and is used to install the heating element 3, ensuring that the heating element 3 is equidistantly and symmetrically distributed for stable heating. Rotating hole 19: The rotating hole 19 is opened at both ends of the heating furnace 2 and cooperates with the rotating ring 13 of the rotating cylinder 6 to allow the rotating cylinder 6 to rotate flexibly.

[0027] Working principle: The operator first opens the furnace door 1, which is symmetrically hinged at the top of the heating furnace 2, and places the bearing steel pipe to be heated in the designated position inside the furnace. Then, the front ends of the four symmetrically distributed force bars 8 on the front end of the connecting ring 7 are inserted into the bearing steel pipe. Next, the rotating ring 10 at the end of the threaded fixing rod 5 is rotated. Because the external thread on the cylindrical surface of the threaded fixing rod 5 and the internal thread inside the end of the rotating cylinder 6 are engaged, rotating the rotating ring 10 will cause the threaded fixing rod 5 to move inward along the axial direction. As the threaded fixing rod 5 moves forward, its front end, which is truncated cone-shaped, also moves. The inclined surface of the moving end 11 is in close contact with the end of the force bar 8. As the moving end 11 continues to move forward... An outward thrust is generated on the force-bearing strip 8. Under the action of this thrust, the force-bearing strip 8 overcomes the elastic force of the compression spring 9 on the back and moves outward. Multiple force-bearing strips 8 expand outward simultaneously, applying a holding force from inside the bearing steel pipe fitting, firmly clamping the steel pipe fitting in the predetermined position, preventing it from shaking or shifting during subsequent heating and rotation. After the bearing steel pipe fitting is firmly clamped, the operator starts the heating program through the control panel 17 on the right side of the transparent observation window at the front of the heating furnace 2. Multiple heating elements 3, equidistantly distributed and symmetrically installed on the mounting block 18 on the back of the heating furnace 2, begin to work. These heating elements 3 are fixedly installed by the fixing parts 4 at the front of the mounting block 18, which can stably and evenly release heat into the furnace. The heat generated by heating element 3 circulates inside heating furnace 2, heating the bearing steel pipe material from all directions. Operators can monitor the heating status of the material in real time through a transparent observation window and use control panel 17 to precisely adjust parameters such as power and heating time of heating element 3 to ensure that the heating effect of the material meets the process requirements. While the material is being heated, the L-shaped handle 12 on the outer cylindrical surface of rotating cylinder 6 is rotated. Since the rotating ring 13 on the outer cylindrical surface of rotating cylinder 6 is in rotational engagement with the rotating holes 19 at both ends of heating furnace 2, the rotation of handle 12 drives rotating cylinder 6 to rotate at both ends of heating furnace 2. Rotating cylinder 6 is fixedly connected to connecting block 15 at the end of connecting ring 7 through connecting groove 14 at the front end by bolts. This causes the connecting ring 7, the force-bearing bar 8, and the clamped bearing steel pipe to rotate together. During the rotation, each part of the steel pipe can receive the heat emitted by the heating element 3 more evenly, avoiding uneven local heating and further improving the heating quality and efficiency. When the bearing steel pipe reaches the predetermined heating temperature and time, the operator rotates the rotating ring 10 of the threaded fixing rod 5 in the opposite direction, causing the threaded fixing rod 5 to retract outward. The pushing force of the moving end 11 on the force-bearing bar 8 disappears, and the force-bearing bar 8 retracts inward under the elastic force of the compression spring 9, releasing the clamping of the steel pipe. Then, the heating element 3 is stopped, the furnace door 1 is opened, and the heated steel pipe is taken out, completing one heating cycle.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing steel tube blank heating furnace comprising a heating furnace (2) and a heating element (3), characterized in that: The top of the heating furnace (2) is hinged with symmetrical furnace doors (1). Multiple heating elements (3) are arranged at equal intervals on the back of the interior of the heating furnace (2). Rotating cylinders (6) are rotatably installed at both ends of the heating furnace (2). Threaded fixing rods (5) are threadedly fitted inside the end of the rotating cylinder (6). A connecting ring (7) is inserted into the front end of the rotating cylinder (6). The connecting ring (7) is fixedly connected by bolts. Four symmetrical force-bearing bars (8) are arranged inside the front end of the connecting ring (7). Symmetrical compression springs (9) are arranged on the back of the force-bearing bars (8). The end of the force-bearing bars (8) is tightly fitted with the front end of the threaded fixing rod (5). A transparent observation window is provided at the front end of the heating furnace (2). A control panel (17) is provided on the right side of the transparent observation window.

2. The bearing steel pipe heating furnace according to claim 1, characterized in that: The heating furnace (2) has multiple equidistant and symmetrically distributed mounting blocks (18) on its inner back side. Heating elements (3) are mounted on the mounting blocks (18). Fixing members (4) are fixedly installed on the front end of the mounting blocks (18) by bolts. The heating elements (3) are fixedly installed by the fixing members (4).

3. The bearing steel pipe heating furnace according to claim 1, characterized in that: The heating furnace (2) has annular rotating holes (19) at both ends, and the outer cylindrical surface of the rotating cylinder (6) has annular rotating rings (13). The rotating cylinder (6) passes through both ends of the heating furnace (2), and the rotating rings (13) rotate in conjunction with the rotating holes (19). The outer cylindrical surface of the end of the rotating cylinder (6) has an L-shaped handle (12).

4. A heating furnace for bearing steel pipe components according to claim 3, characterized in that: The rotating cylinder (6) has an internal thread inside its end, and the threaded fixing rod (5) has an external thread on its cylindrical surface. The front end of the threaded fixing rod (5) is inserted into the interior of the rotating cylinder (6). The external thread of the threaded fixing rod (5) and the internal thread of the rotating cylinder (6) are connected to each other. The end of the threaded fixing rod (5) is provided with a swivel ring (10).

5. A heating furnace for bearing steel pipe components according to claim 4, characterized in that: The front end of the rotating cylinder (6) is provided with a circular connecting groove (14), and the end of the connecting ring (7) is provided with a circular connecting block (15). The connecting block (15) is inserted into the interior of the connecting groove (14) and fixedly connected by bolts. The front end of the connecting ring (7) is provided with four central axis symmetrical internal cavities (16). The internal cavities (16) are respectively provided with force strips (8) and compression springs (9). The compression springs (9) are located on the back of the force strips (8).

6. A heating furnace for bearing steel pipe components according to claim 5, characterized in that: The front end of the threaded fixing rod (5) is provided with a frustum-shaped movable end (11), and the two ends of the force-bearing bar (8) pass through the two ends of the connecting ring (7) respectively, wherein the end of the force-bearing bar (8) is in close contact with the inclined surface of the movable end (11).

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