Needle quenching furnace

Abstract

The utility model relates to the field of quenching furnace technical equipment, and discloses a needle quenching furnace which comprises a quenching furnace body, a cover plate on the quenching furnace body is lifted through a motor and a rope, one end of the cover plate is rotatably connected with the upper surface of the quenching furnace body through a rotating shaft, and a limiting structure and a fixing structure are arranged on the quenching furnace body. The limiting structure comprises a rotating shaft located on one side of the cover plate, a spring and a pressing plate. The fixing structure comprises a fixing frame and a fixing plate located on the two sides of the cover plate. The cover plate is thought to abut against and reinforce, so that the safety problem caused by mistakenly opening the cover plate by the motor can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of quenching furnace technology and equipment, specifically a needle quenching furnace. Background Technology

[0002] When the needle is being quenched in the quenching furnace, the temperature inside the furnace is very high, usually between 800°C and 1200°C. If the motor that controls the opening and closing of the cover plate malfunctions and accidentally opens the cover plate, the temperature inside the quenching furnace will be released rapidly, which will harm the working environment.

[0003] Document CN202322360596 discloses a powder metallurgy quenching furnace, including a base, a furnace body on top of the base, and a movable storage assembly inside the furnace body. The top of the furnace body has a rectangular opening for the storage assembly to pass through. The storage assembly includes a frame, with multiple perforated storage plates arranged equidistantly on the left and right sides of the inner wall of the frame. A top plate is located above the frame, and a lifting ring is located in the center of the top of the top plate. This quenching furnace lacks safety measures during quenching. If a motor malfunction causes the cover to open accidentally, the high temperature inside the furnace will diffuse into the working environment, posing a safety hazard.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned issues, this utility model discloses a needle quenching furnace. By artificially abutting and reinforcing the cover plate, safety problems caused by the motor accidentally opening the cover plate can be effectively avoided.

[0006] The technical solution of this utility model is as follows: a needle quenching furnace, including a quenching furnace body, a cover plate on the quenching furnace body is lifted by a motor and ropes, one end of the cover plate is rotatably connected to the upper surface of the quenching furnace body through a rotating shaft, the quenching furnace body is provided with a limiting structure and a fixing structure, the limiting structure includes a rotating shaft, a spring and a pressure plate located on one side of the cover plate, and the fixing structure includes a fixing frame and a fixing plate located on both sides of the cover plate.

[0007] By adopting the above technical solution, when the cover plate needs to be covered, it can be limited and fixed by the limiting structure and the fixing structure to prevent the high temperature and pressure in the quenching furnace from causing the cover plate to spring open, thereby improving the safety factor of the working environment.

[0008] Preferably, the bottom of the rotating shaft is rotatably connected to the upper surface of the quenching furnace body via a base, the rotating shaft is inverted L-shaped, and a spring is provided at the top of the rotating shaft via a connecting plate, with a pressure plate at the end of the spring.

[0009] By adopting the above technical solution, when it is necessary to limit the cover plate, the rotating shaft is rotated from the base to the top of the cover plate, and then the pressure plate is pressed against the cover plate, which can limit the cover plate.

[0010] Preferably, the base is located outside the diagonal of the right-angled side of the cover plate, and the base rotates at an angle of 180 degrees, with the rotating shaft rotating until the cover plate opens without contacting the pressure plate.

[0011] By adopting the above technical solution, when it is necessary to open the cover plate, the rotating shaft rotates within the base, and then the pressure plate moves away from the cover plate, allowing the cover plate to flip up along the rotating shaft, while the limiting structure does not affect the opening of the cover plate.

[0012] Preferably, when the pressure plate contacts the cover plate and limits its movement, the spring is always in an open state, pressing the cover plate, and the spring is located at the center of the upper surface of the pressure plate.

[0013] By adopting the above technical solution, when the pressure plate of the limiting structure squeezes the cover plate, the spring always exerts a squeezing force on the cover plate, causing the cover plate to close towards the quenching furnace body.

[0014] Preferably, the fixing frame is in the shape of a downward U-shape, and the fixing frame is located on both sides of the cover plate, that is, the fixing frame and the opening direction of the cover plate are perpendicular in space, and the U-shape of the fixing frame is located above the cover plate in space.

[0015] By adopting the above technical solution, the shape of the fixing frame is just right for the fixing plate to pass over and fix the cover plate, preventing the cover plate from popping out due to internal temperature or pressure when the quenching furnace is working.

[0016] Preferably, the fixing plate passes through the hollowed-out portion above the cover plate of the fixing frame, the fixing plate is located entirely above the cover plate, and the length of the fixing plate is greater than the distance between the fixing frames.

[0017] By adopting the above technical solution, the fixing plate passes through the hollow part of the fixing frame, and the two ends of the fixing plate are located on both sides of the fixing frame, exposing the side of the fixing frame, which makes it convenient for workers to pull out and insert the cover plate when fixing it.

[0018] Preferably, a fixing ring is provided on the upper surface of the cover plate on the side away from the rotating shaft, the rope passes through the fixing ring, the end of the rope is located on the winding roller at the output end of the motor, the winding direction of the winding roller is parallel to the rope, and the middle part of the rope passes over the pulley and is fixed on the fixing ring.

[0019] By adopting the above technical solution, the forward and reverse rotation of the motor drives the winding roller to open and close the cover plate on the quenching furnace body, thereby increasing the opening speed of the cover plate.

[0020] Preferably, the bracket is in the shape of an inverted U, with the pulley located at the bottom of the bracket, the fixing ring located on the outside of the fixing plate, and the fixing ring and the motor located on both sides of the bracket.

[0021] Preferably, a sealing strip is provided around the inlet of the cover plate of the quenching furnace body.

[0022] By adopting the above technical solution, the sealing strip can improve the sealing performance between the cover plate and the quenching furnace body when the cover is closed.

[0023] The advantages of this utility model are as follows: 1. By setting limiting structures on both sides of the quenching furnace, the cover plate can be prevented from rising by the spring and telescopic rod, thus playing a supporting role and improving the safety factor.

[0024] 2. This utility model can fix the cover plate by setting a fixing structure on the cover plate and passing the fixing plate through the fixing bracket. This can prevent the cover plate from being opened accidentally due to motor rotation failure, so that the cover plate is fixed to the quenching furnace body during use.

[0025] 3. This utility model prevents the cover plate from being opened by means of artificial limiting and fixing, which greatly improves the safety performance of the quenching furnace. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of this utility model.

[0030] The components are: 1. Quenching furnace body, 2. Cover plate, 3. Motor, 4. Support, 5. Rope, 6. Pulley, 7. Fixing ring, 8. Rotating shaft, 801. Connecting plate, 9. Base, 10. Spring, 11. Pressure plate, 12. Telescopic rod, 13. Fixing frame, 14. Fixing plate, 15. Rotating shaft, 16. Sealing strip, 17. Winding roller. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] like Figure 1As shown, the needle quenching furnace includes a furnace body 1. A cover plate 2 on the furnace body 1 is lifted by a motor 3 and a rope 5. One end of the cover plate 2 is rotatably connected to the upper surface of the furnace body 1 via a rotating shaft 15. The furnace body 1 is provided with a limiting structure and a fixing structure. The limiting structure includes a rotating shaft 8, a spring 10, and a pressure plate 11 located on one side of the cover plate 2. The fixing structure includes a fixing bracket 13 and a fixing plate 14 located on both sides of the cover plate 2. When the cover plate 2 needs to be covered, it can be limited and fixed by the limiting structure and the fixing structure to prevent the high temperature and pressure inside the quenching furnace from causing the cover plate 2 to spring open, thereby improving the safety factor of the working environment.

[0033] The bottom of the rotating shaft 8 is rotatably connected to the upper surface of the quenching furnace body 1 via the base 9. The rotating shaft 8 is inverted L-shaped. The top of the rotating shaft 8 is provided with a spring 10 via a connecting plate 801. The end of the spring 10 is provided with a pressure plate 11. A telescopic rod 12 is also connected inside the spring 10 between the pressure plate 11 and the connecting plate 801. When it is necessary to limit the cover plate 2, the rotating shaft 8 is rotated from the base 9 to the top of the cover plate 2, and then the pressure plate 11 is placed against the cover plate 2, which can limit the cover plate 2.

[0034] The base 9 is located outside the diagonal of the right-angled side of the cover plate 2. The base 9 rotates 180 degrees. The rotating shaft 8 rotates until the cover plate 2 is open and does not contact the pressure plate 11. When it is necessary to open the cover plate 2, the base 9 rotates through the rotating shaft 8, and then the pressure plate 11 moves away from the cover plate 2, so that the cover plate 2 can be flipped up along the rotating shaft 15. The limiting structure does not affect the opening of the cover plate 2.

[0035] When the pressure plate 11 contacts the cover plate 2 and limits its movement, the spring 10 is always in the open state and compresses the cover plate 2. The spring 10 is located at the center of the upper surface of the pressure plate 11. When the pressure plate of the limiting structure compresses the cover plate 2, the spring 10 always has a compressive force on the cover plate 2, so that the cover plate 2 closes towards the quenching furnace body 1.

[0036] The fixing frame 13 is U-shaped and located on both sides of the cover plate 2. That is, the fixing frame 13 and the opening direction of the cover plate 2 are perpendicular in space. The U-shaped opening of the fixing frame 13 is located above the cover plate 2 in space. The shape of the fixing frame 13 is just right for the fixing plate 14 to pass through and fix the cover plate 2, so as to prevent the cover plate 2 from popping out due to the motor 3 being accidentally opened when the quenching furnace is working.

[0037] The fixing plate 14 passes through the hollow part above the cover plate 2 of the fixing frame 13. The fixing plate 14 is located above the cover plate 2. The length of the fixing plate 14 is greater than the distance between the fixing frames 13. The fixing plate 14 passes through the hollow part of the fixing frame 13, and the two ends of the fixing plate 14 are located on both sides of the fixing frame 13, exposing the side of the fixing frame 13. This makes it convenient for workers to pull out and insert the fixing plate 2 when fixing it.

[0038] A fixing ring 7 is provided on the upper surface of the cover plate 2 away from the rotating shaft 15. The rope 5 passes through the fixing ring 7, and the end of the rope 5 is located on the winding roller 17 at the output end of the motor 3. The winding direction of the winding roller 17 is parallel to that of the rope 5. The middle part of the rope 5 passes over the pulley 6 and is fixed to the fixing ring 7. The motor 3 rotates forward and reverse to drive the winding roller 17 to open and close, thereby opening and closing the cover plate 2 on the quenching furnace body 1 and increasing the opening speed of the cover plate 2.

[0039] The bracket 4 is in the shape of an inverted U. The pulley 6 is located at the bottom of the bracket 4. The fixing ring 7 is located on the outside of the fixing plate 14. The fixing ring 7 and the motor 3 are located on both sides of the bracket 4. The periphery of the inlet of the cover plate 2 of the quenching furnace body 1 is provided with a sealing strip 16. The sealing strip 16 can improve the sealing between the cover plate 2 and the quenching furnace body 1 when the cover is closed.

[0040] Working principle: When the quenching furnace body 1 needs to be opened, the motor 3 is started. The motor 3 drives the rope 5, and the fixing ring 7 at the end of the rope 5 drives the cover plate 3 to rotate around the rotating shaft 15, thereby opening the quenching furnace body 1. When the quenching furnace body 1 is closed, the motor 3 reverses and releases the rope 5. The cover plate 2 closes the quenching furnace through the sealing strip 16. Then the rotating shaft 8 is rotated to the top of the cover plate 2. The spring 10 pushes upward, and the pressure plate 11 presses on the cover plate 2. Then the fixing plate 14 passes through the fixing frame 13 to completely fix the cover plate 2 and prevent the cover plate 2 from being popped open during operation.

[0041] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A needle quenching furnace, comprising a furnace body, wherein a cover plate on the furnace body is lifted by a motor and ropes, and one end of the cover plate is rotatably connected to the upper surface of the furnace body via a rotating shaft, characterized in that: The quenching furnace body is provided with a limiting structure and a fixing structure. The limiting structure includes a rotating shaft, a spring and a pressure plate located on one side of the cover plate. The fixing structure includes a fixing frame and a fixing plate located on both sides of the cover plate.

2. The needle quenching furnace according to claim 1, characterized in that: The bottom of the rotating shaft is rotatably connected to the upper surface of the quenching furnace body via a base. The rotating shaft is inverted L-shaped. A spring is provided at the top of the rotating shaft via a connecting plate, and a pressure plate is provided at the end of the spring.

3. The needle quenching furnace according to claim 2, characterized in that: The base is located outside the diagonal of the right-angled side of the cover plate. The base rotates at an angle of 180 degrees. The rotating shaft rotates until the cover plate opens without contacting the pressure plate.

4. The needle quenching furnace according to claim 1, characterized in that: When the pressure plate contacts and limits the cover plate, the spring is always in an open state, pressing the cover plate. The spring is located at the center of the upper surface of the pressure plate.

5. The needle quenching furnace according to claim 1, characterized in that: The fixing frame is in the shape of a downward U-shape. The fixing frame is located on both sides of the cover plate, that is, the fixing frame and the opening direction of the cover plate are perpendicular in space. The U-shape of the fixing frame is located above the cover plate in space.

6. The needle quenching furnace according to claim 1, characterized in that: The fixing plate passes through the hollowed-out portion above the cover plate of the fixing frame, and the entire fixing plate is located above the cover plate. The length of the fixing plate is greater than the distance between the fixing frames.

7. The needle quenching furnace according to claim 1, characterized in that: A fixing ring is provided on the upper surface of the cover plate on the side away from the rotating shaft. The rope passes through the fixing ring, and the end of the rope is located on the winding roller at the output end of the motor. The winding direction of the winding roller is parallel to the rope, and the middle part of the rope passes over the pulley and is fixed to the fixing ring.

8. The needle quenching furnace according to claim 7, characterized in that: The pulley is located at the bottom of the bracket, which is in the shape of an inverted U. The fixing ring is located on the outside of the fixing plate, and the fixing ring and the motor are located on both sides of the bracket.

9. The needle quenching furnace according to claim 1, characterized in that: A sealing strip is provided around the inlet of the cover plate of the quenching furnace body.

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