Furnace door structure of horizontal tempering furnace

Abstract

The utility model discloses a furnace door structure of a horizontal tempering furnace, which relates to the technical field of horizontal tempering furnaces and comprises a furnace door, the furnace door is used for shielding an inlet of a furnace shell, a first telescopic rod is arranged on the furnace door, an inner container door is arranged at the telescopic end of the first telescopic rod, and the inner container door is used for shielding one end, close to the inlet, of an inner container. The inner container is arranged in the furnace shell, a plate trailer is arranged at the bottom of the furnace door and arranged at the bottom of the furnace shell, the side portion of the furnace door is connected with the side portion of the furnace shell through a second telescopic rod, the second telescopic rod stretches out and draws back in the axial direction of the furnace shell, a bearing plate is arranged at the bottom of the inner container door and used for bearing workpieces, and a sliding rail is arranged at the bottom of the bearing plate. The sliding rail extends in the axial direction of the inner container, a supporting ring is arranged at the end, close to the inlet, of the inner container, and the sliding rail is in sliding fit with the supporting ring in the axial direction of the inner container.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal tempering furnaces, and particularly relates to a furnace door structure of a horizontal tempering furnace. Background Art

[0002] The horizontal tempering furnace has a compact structure and uniform heating, and is suitable for tempering large workpieces.

[0003] For example, in the patent with the publication number CN208649377U, "Deep Cryogenic Vacuum Tempering Furnace" is disclosed. Refer to Figure 7 , this patent includes a furnace shell 1, a furnace door 2 is installed at the entrance of the furnace shell 1, and the furnace door 2 is hinged to the furnace shell 1 through a hinge; an inner tank 3 is installed inside the furnace shell 1, and a plurality of heat conduction rings 4 are arranged at intervals along the axial direction of the inner wall of the inner tank 3; the inner tank 3 is provided with a first open end and a second open end in the axial direction, the first open end is located on the side of the inner tank 3 away from the entrance, and the second open end is located on the side of the inner tank 3 close to the entrance; a first cylinder 5 is installed at one end of the furnace shell 1 away from the furnace door 2, the telescopic end of the first cylinder 5 is connected with a swing rod 6, and the swing rod 6 is connected with a first door body 7. The first door body 7 is driven to open the first open end by pulling back the swing rod 6 through the telescopic end of the first cylinder 5; a second cylinder 8 is installed on the furnace door 2, and the telescopic end of the second cylinder 8 is connected with a second door body 9. The second cylinder 8 is used to control the second door body 9 to shield or open the second open end.

[0004] Since the furnace door 2 is hinged to the furnace shell 1, when the furnace door 2 is opened, the furnace door 2 needs to be rotated to one side of the furnace shell 1; since the second door body 9 is connected to the furnace door 2 through the second cylinder 8, the second door body 9 can be rotated to one side of the furnace shell 1 together with the furnace door 2.

[0005] When a large workpiece needs to be placed in the inner tank 3, usually the furnace door 2 and the second door body 9 are first opened; then, a crane is used to place the large workpiece on a stacking truck; after that, the stacking truck is used to send the large workpiece into the inner tank 3. Thus, when placing a large workpiece in the existing horizontal tempering furnace, a stacking truck is required, and then, space needs to be reserved in the factory area for long-term separate storage of the stacking truck, reducing the utilization rate of the factory area space.

[0006] Therefore, how to improve the utilization rate of the factory area space is a technical problem that needs to be solved currently. Summary of the Utility Model

[0007] Aiming at the above-mentioned deficiencies existing in the prior art, the utility model provides a furnace door structure of a horizontal tempering furnace, and the utility model can improve the utilization rate of the factory area space.

[0008] To achieve the above object, the technical solution adopted by the utility model is:

[0009] The furnace door structure of a horizontal tempering furnace includes a furnace door for shielding the entrance of the furnace shell. A first telescopic rod is provided on the furnace door, and an inner tank door is provided at the telescopic end of the first telescopic rod. The inner tank door is used to shield one end of the inner tank near the entrance. The inner tank is arranged inside the furnace shell. A trolley is provided at the bottom of the furnace door, and the trolley is arranged at the bottom of the furnace shell. The side of the furnace door is connected to the side of the furnace shell through a second telescopic rod, and the second telescopic rod expands and contracts along the axial direction of the furnace shell. A supporting plate is provided at the bottom of the inner tank door for carrying workpieces. A slide rail is provided at the bottom of the supporting plate and extends along the axial direction of the inner tank. A support ring is provided at one end of the inner tank near the entrance, and the slide rail slides in cooperation with the support ring along the axial direction of the inner tank.

[0010] Further, reinforcing ribs are provided on the top of the supporting plate, and the sides of the reinforcing ribs are connected to the inner tank door.

[0011] Further, a plurality of through holes are provided on the supporting plate.

[0012] Further, a supporting plate is provided on the inner wall of the furnace door, and the bottom of the inner tank door slides in cooperation with the top surface of the supporting plate. The outer diameter of the inner tank door is equal to or larger than the outer diameter of the inner tank.

[0013] Further, the supporting plate is an arc-shaped plate.

[0014] Further, both the first telescopic rod and the second telescopic rod are oil cylinders or air cylinders.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, by providing a trolley at the bottom of the furnace door, a supporting plate at the bottom of the inner tank door, and using a second telescopic rod to connect the side of the furnace door to the furnace shell, the expansion and contraction of the second telescopic rod can drive the furnace door, the inner tank door, the trolley, and the supporting plate to move together. When the supporting plate is exposed from the inner tank, large workpieces can be directly placed on the supporting plate; when the supporting plate enters the inner tank, the supporting plate can carry large workpieces into the inner tank together. There is no need to use a stacker to send large workpieces into the inner tank, thus eliminating the use of the stacker, and then there is no need to set aside a separate space in the factory area to store the stacker, which is beneficial to improving the utilization rate of the factory area space.

[0017] 2. By providing a slide rail at the bottom of the supporting plate and a support ring at one end of the inner tank near the entrance, when the supporting plate enters and exits the inner tank, the slide rail can slide on the support ring, enabling the supporting plate to be supported by the slide rail and the support ring, which is beneficial to improving the use stability and safety of the supporting plate.

[0018] 3. The setting of the reinforcing ribs can improve the connection strength between the supporting plate and the inner tank door, thereby improving the reliability of the supporting plate for carrying workpieces.

[0019] 4. The provision of through holes allows the heating air flow inside the horizontal tempering furnace to pass through, enabling the workpieces on the supporting plate to be heated more evenly, which is conducive to improving the tempering effect.

[0020] 5. When the telescopic end of the first telescopic rod extends or retracts, the provision of the support plate allows the inner tank door to slide on the top surface of the support plate. The support plate can support the inner tank door, reducing the risk of the inner tank door falling and improving the stability and safety of the inner tank door.

[0021] 6. By using an arc-shaped plate as the support plate, the support plate can better conform to the shape of the inner tank door, increasing the supporting area of the support plate for the inner tank door, which is conducive to further improving the stability and safety of the inner tank door. Description of the Drawings

[0022] Figure 1 is a three-dimensional view of the furnace door structure of a horizontal tempering furnace Figure 1 ;

[0023] Figure 2 is a three-dimensional view of the furnace door structure of a horizontal tempering furnace Figure 2 ;

[0024] Figure 3 is a three-dimensional view of the furnace door structure of a horizontal tempering furnace Figure 3 ;

[0025] Figure 4 is the front view of the furnace door structure of a horizontal tempering furnace;

[0026] Figure 5 is the top view of the furnace door structure of a horizontal tempering furnace;

[0027] Figure 6 is the three-dimensional view of the furnace door structure of a horizontal tempering furnace after adding the support plate;

[0028] Figure 7 is the structural schematic diagram of the background technology.

[0029] Description of the Reference Numerals:

[0030] 1 - furnace shell, 101 - inlet, 2 - furnace door, 3 - inner tank, 4 - heat conduction ring, 5 - first cylinder, 6 - swing rod, 7 - first door body, 8 - second cylinder, 9 - second door body, 10 - first telescopic rod, 11 - inner tank door, 12 - trolley, 13 - second telescopic rod, 14 - supporting plate, 1401 - through hole, 15 - reinforcing rib, 16 - slide rail, 17 - support ring, 18 - support plate. Detailed Embodiments

[0031] To better understand the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings. It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model.

[0032] Embodiment:

[0033] See Figures 1-5 , a furnace door structure of a horizontal tempering furnace, including a furnace door 2, and the furnace door 2 is used to shield the inlet 101 of the furnace shell 1.

[0034] A first telescopic rod 10 is fixedly installed in the middle of the furnace door 2. The first telescopic rod 10 uses a cylinder. In addition, the first telescopic rod 10 can also use an oil cylinder. The telescopic end of the first telescopic rod 10 is fixedly installed with an inner tank door 11, and the inner tank door 11 is used to shield one end of the inner tank 3 close to the inlet 101. The inner tank 3 is coaxially and fixedly installed in the furnace shell 1. When the telescopic end of the first telescopic rod 10 extends, it can push the inner tank door 11 to shield one end of the inner tank 3 close to the inlet 101; when the telescopic end of the first telescopic rod 10 retracts, it can drive the inner tank door 11 away from the inner tank 3, so that one end of the inner tank 3 close to the inlet 101 is opened.

[0035] A trolley 12 is fixedly welded to the bottom of the furnace door 2. The trolley 12 is arranged at the bottom of the furnace shell 1, and the trolley 12 can move in the space between the bottom of the furnace shell 1 and the ground. The trolley 12 plays a supporting role for the furnace door 2.

[0036] The side part of the furnace door 2 is connected to the side part of the furnace shell 1 through a second telescopic rod 13. The second telescopic rod 13 expands and contracts along the axial direction of the furnace shell 1. The second telescopic rod 13 can use an oil cylinder or a cylinder.

[0037] A supporting plate 14 is fixedly welded to the bottom of the inner tank door 11, and the supporting plate 14 is used to carry workpieces.

[0038] Reinforcing ribs 15 are fixedly welded to the top of the supporting plate 14, and the side parts of the reinforcing ribs 15 are fixedly welded to the inner tank door 11. The arrangement of the reinforcing ribs 15 can improve the connection strength between the supporting plate 14 and the inner tank door 11, thereby improving the reliability of the supporting plate 14 to carry workpieces.

[0039] A plurality of through holes 1401 are provided on the supporting plate 14. The arrangement of the through holes 1401 allows the heating air flow in the horizontal tempering furnace to pass through, so that the workpieces located on the supporting plate 14 are heated more evenly, which is beneficial to improving the tempering effect.

[0040] A slide rail 16 is fixedly welded to the bottom of the supporting plate 14, and the slide rail 16 extends along the axial direction of the inner tank 3. A support ring 17 is fixedly welded to one end of the inner tank 3 close to the inlet 101, and the slide rail 16 is slidably engaged with the support ring 17 along the axial direction of the inner tank 3.

[0041] When the heat conducting ring 4 in Figure 7 is installed on the inner wall of the inner tank 3, in this embodiment, the inner diameter of the support ring 17 needs to be smaller than the inner diameter of the heat conducting ring 4. When the slide rail 16 slides on the inner wall of the support ring 17, since the inner diameter of the support ring 17 is smaller than the inner diameter of the heat conducting ring 4, the slide rail 16 can be prevented from hitting the heat conducting ring 4, which is beneficial to improving the safety of using the supporting plate 14 to enter and exit the inner tank 3.

[0042] The working principle of this embodiment is as follows:

[0043] (1) When a large workpiece needs to be fed into the inner tank 3:

[0044] First, the telescopic end of the second telescopic rod 13 extends, and the telescopic end of the second telescopic rod 13 pushes the furnace door 2 to move away from the inlet 101. At the same time, the flatbed truck 12 at the bottom of the furnace door 2 moves on the ground. The furnace door 2 drives the inner tank door 11 to move together through the first telescopic rod 10. The inner tank door 11 drives the supporting plate 14 to move together, and the slide rail 16 at the bottom of the supporting plate 14 slides on the support ring 17. After moving in place, the second telescopic rod 13 is shut down. When the exposed area on the supporting plate 14 is sufficient to place the large workpiece, it means that the movement is in place.

[0045] Then, use a crane to lift the large workpiece and place it on the supporting plate 14.

[0046] Finally, the telescopic end of the second telescopic rod 13 retracts, and the telescopic end of the second telescopic rod 13 pulls the furnace door 2 to move towards the inlet 101. At the same time, the flatbed truck 12 at the bottom of the furnace door 2 moves on the ground. The furnace door 2 drives the inner tank door 11 to move together through the first telescopic rod 10. The inner tank door 11 drives the supporting plate 14 to move together, and the slide rail 16 at the bottom of the supporting plate 14 slides on the support ring 17. After the furnace door 2 completely covers the inlet 101, the second telescopic rod 13 is shut down, and the feeding operation can be completed.

[0047] (2) When the large workpiece needs to be taken out of the inner tank 3:

[0048] First, the telescopic end of the second telescopic rod 13 extends, and the telescopic end of the second telescopic rod 13 pushes the furnace door 2 to move away from the inlet 101. At the same time, the furnace door 2 drives the flatbed truck 12, the inner tank door 11, and the supporting plate 14 to move together. When the large workpiece on the supporting plate 14 is completely exposed, the second telescopic rod 13 is shut down.

[0049] Then, use the overhead crane to lift the large workpiece to the next process.

[0050] Based on the above working principle, it can be seen that this embodiment has the following effects:

[0051] In this embodiment, by arranging the flatbed truck 12 at the bottom of the furnace door 2, arranging the supporting plate 14 at the bottom of the inner tank door 11, and using the second telescopic rod 13 to connect the side of the furnace door 2 with the furnace shell 1, the telescopic movement of the second telescopic rod 13 can drive the furnace door 2, the inner tank door 11, the flatbed truck 12, and the supporting plate 14 to move together. When the supporting plate 14 is exposed from the inner tank 3, large workpieces can be directly placed on the supporting plate 14; when the supporting plate 14 enters the inner tank 3, the supporting plate 14 can carry the large workpieces into the inner tank 3 together. There is no need to use a reach truck to send the large workpieces into the inner tank 3, thus eliminating the use of the reach truck, and then there is no need to set aside a separate space in the factory area to store the reach truck, which is beneficial to improving the utilization rate of the factory area space.

[0052] Moreover, in this embodiment, by arranging the slide rail 16 at the bottom of the supporting plate 14 and arranging the support ring 17 at one end of the inner tank 3 close to the entrance 101, when the supporting plate 14 enters and exits the inner tank 3, the slide rail 16 can slide on the support ring 17, so that the supporting plate 14 is supported by the slide rail 16 and the support ring 17, which is beneficial to improving the use stability and safety of the supporting plate 14.

[0053] Further, referring to Figure 6 , a support plate 18 is welded and fixed on the inner wall of the furnace door 2. When the telescopic end of the first telescopic rod 10 extends or retracts, the inner tank door 11 can be driven to slide on the top surface of the support plate 18. The support plate 18 can support the inner tank door 11, reduce the risk of the inner tank door 11 falling, and is beneficial to improving the stability and safety of the inner tank door 11. In addition, the outer diameter of the inner tank door 11 is equal to or larger than the outer diameter of the inner tank 3. Thus, when the furnace door 2 closes the entrance 101, the support plate 18 can enter the space between the outer wall of the inner tank 3 and the inner wall of the furnace shell 1, the support plate 18 will not hit the inner tank 3, and the support plate 18 will not prevent the furnace door 2 from closing.

[0054] Furthermore, the support plate 18 adopts an arc-shaped plate, and the arc-shaped plate can fit the shape of the inner tank door 11, increasing the support area for the inner tank door 11, which is beneficial to further improving the stability and safety of the inner tank door 11.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A furnace door structure of a horizontal tempering furnace, comprising a furnace door, the furnace door is used to shield the entrance of the furnace shell, a first telescopic rod is provided on the furnace door, the telescopic end of the first telescopic rod is provided with an inner liner door, the inner liner door is used to shield the end of the inner liner close to the entrance, the inner liner is arranged inside the furnace shell, and is characterized in that: A trolley is provided at the bottom of the furnace door, and the trolley is provided at the bottom of the furnace shell. The side of the furnace door is connected to the side of the furnace shell through a second telescopic rod, and the second telescopic rod is telescoped along the axial direction of the furnace shell. A supporting plate is provided at the bottom of the inner tank door, and the supporting plate is used to carry workpieces. A slide rail is provided at the bottom of the supporting plate, and the slide rail extends along the axial direction of the inner tank. A support ring is provided at one end of the inner tank close to the entrance, and the slide rail slides with the support ring along the axial direction of the inner tank.

2. The furnace door structure of a horizontal tempering furnace according to claim 1, characterized in that: The top of the supporting plate is provided with reinforcing ribs, and the sides of the reinforcing ribs are connected to the inner container door.

3. The furnace door structure of a horizontal tempering furnace according to claim 2, characterized in that: The supporting plate is provided with a plurality of through holes.

4. The furnace door structure of a horizontal tempering furnace according to claim 1, characterized in that: A support plate is provided on the inner wall of the furnace door, the bottom of the inner pot door is slidably matched with the top surface of the support plate, and the outer diameter of the inner pot door is equal to or greater than the outer diameter of the inner pot.

5. The furnace door structure of a horizontal tempering furnace according to claim 4, characterized in that: The support plate is an arc-shaped plate.

6. The furnace door structure of a horizontal tempering furnace according to claim 1, characterized in that: The first telescopic rod and the second telescopic rod are both made of oil cylinders or air cylinders.

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