A type of pushboat furnace door structure

Abstract

This utility model relates to the field of push-boat furnace technology and discloses a push-boat furnace door structure, including a furnace body. The furnace body has an inlet and an outlet at its front and rear ends, and a furnace door body is provided at both the inlet and outlet. Guide rails are fixedly connected to both sides of the inlet and outlet of the furnace body. Rollers matching the guide rails are connected to both sides of the furnace door body. Mounting brackets are fixedly connected to both sides of the guide rails. The mounting brackets have several through holes, and a drive mechanism for driving the furnace door body to rise and fall is fixedly connected to the mounting brackets. In this push-boat furnace door structure, when the furnace door encounters unexpected resistance, the wire rope can share the load to a certain extent and play a buffering and protective role, preventing damage to the hydraulic cylinder due to overload. With the action of the protective mechanism and the telescopic component, dust in the working environment of the push-boat furnace is prevented from falling on the wire rope, guide wheels, and bearings connected to the rotating shaft, thus extending the service life of these three components and reducing maintenance and replacement intervals.

Description

Technical Field

[0001] This utility model relates to the field of pushboat furnace technology, specifically a pushboat furnace door structure. Background Technology

[0002] The push-boat furnace is a widely used device for high-temperature heat treatment of materials. It typically consists of a preheating section, a sintering section, and a cooling section, the length of which can be customized according to user requirements. The furnace control system is equipped with imported intelligent instruments and features over-temperature alarms and atmosphere under-pressure alarms. As a crucial component of the push-boat furnace, the furnace door's sealing performance and opening / closing speed directly affect the stability of the furnace atmosphere, production efficiency, and product quality.

[0003] The existing structure of the push-boat furnace door has several problems. The hydraulic cylinder is installed directly above the furnace door. For the hydraulic cylinder to achieve normal extension and retraction, sufficient installation space must be reserved. This means that a certain amount of clearance must be left above or on the side of the furnace body to accommodate the hydraulic cylinder body and its various auxiliary components. In some space-constrained workshops or environments with strict requirements for equipment layout, this can become a major problem. Furthermore, when the furnace door encounters unexpected resistance (such as guide rail deformation), it will directly affect the hydraulic cylinder, easily leading to damage due to overload. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pusher furnace door structure that reduces the probability of hydraulic cylinders being damaged due to overload.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a push-boat furnace door structure, comprising a furnace body, with an inlet and an outlet at the front and rear ends of the furnace body, and a furnace door body at both the inlet and outlet. Guide rails are fixedly connected to both sides of the inlet and outlet of the furnace body, and rollers matching the guide rails are connected to both sides of the furnace door body. Mounting brackets are fixedly connected to both sides of the guide rails, and the mounting brackets have several through holes. A drive mechanism for driving the furnace door body to rise and fall is fixedly connected to the mounting brackets.

[0006] Furthermore, the drive mechanism includes three sets of fixed blocks fixedly connected to the mounting frame. Each set of fixed blocks is rotatably connected to a rotating shaft via a bearing. A guide wheel is fixedly connected to the rotating shaft. A hydraulic cylinder is fixedly connected to the mounting frame. Two steel wire ropes are fixedly connected to the upper end of the hydraulic cylinder. The two steel wire ropes pass through the through hole and are connected to the upper surface of the furnace door body under the guidance of the guide wheel.

[0007] Furthermore, the upper surface of the mounting frame is equipped with a protective mechanism for covering the guide wheel and the two steel wire ropes, and the lower surface of the mounting frame is fixedly connected with three internally threaded pipes. The three internally threaded pipes are threaded with telescopic components for covering the steel wire ropes. The protective mechanism includes two rotating blocks fixedly connected to the mounting frame, and an L-shaped connecting plate is rotatably connected between the two rotating blocks. A box is fixedly connected to the front end of the L-shaped connecting plate.

[0008] Furthermore, a rubber ring is fixedly connected to the lower surface of the box.

[0009] Furthermore, the telescopic assembly includes an externally threaded tube that is threaded onto an internally threaded tube, with an outer tube fixedly connected to the lower end of the externally threaded tube, and an inner tube slidably connected to the outer tube.

[0010] Furthermore, the outer tube is threaded with a tightening bolt.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] When this type of pusher furnace door structure is in use, the wire rope can share the load to a certain extent and play a buffering and protective role when the furnace door encounters unexpected resistance. This prevents damage to the hydraulic cylinder due to overload. Furthermore, the protective mechanism and telescopic components prevent dust from the pusher furnace's working environment from falling onto the wire rope, guide wheel, and bearings connected to the rotating shaft, thus extending the service life of these three components and reducing maintenance and replacement intervals. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0014] Figure 2 This is a side view of the entire utility model;

[0015] Figure 3 for Figure 2 Enlarged view of point A above;

[0016] Figure 4 for Figure 2 Enlarged view of point B above.

[0017] In the diagram: 1. Furnace body; 2. Furnace door body; 3. Guide rail; 4. Mounting bracket; 5. Fixing block; 6. Rotating shaft; 7. Guide wheel; 8. Hydraulic cylinder; 9. Steel wire rope; 10. Roller; 11. Internally threaded pipe; 12. Rotating block; 13. L-shaped connecting plate; 14. Box body; 15. Rubber ring; 16. Externally threaded pipe; 17. Outer pipe; 18. Inner pipe; 19. Tightening bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1 to 4 A push-boat furnace door structure includes a furnace body 1. The furnace body 1 has an inlet and an outlet at its front and rear ends. A furnace door body 2 is provided at both the inlet and outlet. Guide rails 3 are fixedly connected to both sides of the inlet and outlet of the furnace body 1. Rollers 10 that match the guide rails 3 are connected to both sides of the furnace door body 2. Mounting brackets 4 are fixedly connected to both sides of the guide rails 3. The mounting brackets 4 have several through holes. A drive mechanism for driving the furnace door body 2 to rise and fall is fixedly connected to the mounting brackets 4.

[0020] like Figures 1 to 4 As shown, in use, the push-boat furnace door structure of this utility model directly applies power to the lifting and lowering of the furnace door body 2 through the drive mechanism, so that the rollers 10 on both sides of the furnace door body 2 move up and down along the guide rail 3, thereby controlling the opening and closing of the furnace door body 2. During the opening of the furnace door, when the furnace door body 2 encounters unexpected resistance, the drive mechanism can play a certain buffering role, reducing the probability of the hydraulic cylinder 8 being damaged due to overload.

[0021] like Figures 2 to 4 As shown, the driving mechanism includes three sets of fixing blocks 5 fixedly connected to the mounting frame 4. Each set of fixing blocks 5 is rotatably connected to a rotating shaft 6 via a bearing. A guide wheel 7 is fixedly connected to the rotating shaft 6. A hydraulic cylinder 8 is fixedly connected to the mounting frame 4. Two steel wire ropes 9 are fixedly connected to the upper end of the hydraulic cylinder 8. The two steel wire ropes 9 pass through the through hole and are connected to the upper surface of the furnace door body 2 under the guidance of the guide wheel 7.

[0022] Specifically, when the hydraulic cylinder 8 is activated and retracts, it applies tension to the two steel wire ropes 9, thereby applying an upward tension to the furnace door body 2, which drives the furnace door body 2 to move upward and open the door. During this process, as the steel wire ropes 9 move, the guide wheel 7 rotates with the rotating shaft 6.

[0023] like Figures 1 to 2 As shown, the upper surface of the mounting frame 4 is equipped with a protective mechanism for covering the guide wheel 7 and the two steel wire ropes 9. The lower surface of the mounting frame 4 is fixedly connected with three internally threaded pipes 11. The three internally threaded pipes 11 are threaded with telescopic components for covering the steel wire ropes 9. The protective mechanism includes two rotating blocks 12 fixedly connected to the mounting frame 4. An L-shaped connecting plate 13 is rotatably connected between the two rotating blocks 12. A box body 14 is fixedly connected to the front end of the L-shaped connecting plate 13.

[0024] Specifically, since the working environment of the pusher furnace is dusty, the box 14 is used to cover the top of the mounting frame 4 to cover and protect the guide wheel 7, wire rope 9, and bearing connected to the rotating shaft 6, so as to prevent dust from falling on the guide wheel 7, wire rope 9, and bearing connected to the rotating shaft 6, thereby extending the service life of the guide wheel 7, wire rope 9, and bearing connected to the rotating shaft 6. When it is necessary to lubricate the guide wheel 7, wire rope 9, and bearing connected to the rotating shaft 6, it is only necessary to apply a flipping force to the box 14 so that it rotates with the L-shaped connecting plate 13, thereby exposing the guide wheel 7, wire rope 9, and bearing connected to the rotating shaft 6 above the mounting frame 4 for oiling and lubrication.

[0025] like Figure 1 As shown, a rubber ring 15 is fixedly connected to the lower surface of the box body 14.

[0026] Specifically, the rubber ring 15 can seal the gap between the box body 14 and the surface of the mounting bracket 4, further preventing dust from entering, and can also play a role in shock absorption, reducing the vibration generated when the pusher furnace is working.

[0027] like Figure 2 As shown, the telescopic assembly includes an externally threaded pipe 16 threaded to an internally threaded pipe 11, an outer pipe 17 fixedly connected to the lower end of the externally threaded pipe 16, and an inner pipe 18 slidably connected to the outer pipe 17.

[0028] Specifically, since the outer tube 17 is connected to the mounting bracket 4 through the internal threaded tube 11, the inner tube 18 can move up and down inside the outer tube 17 during the lifting and lowering of the furnace door body 2. When it is necessary to apply oil to the steel wire rope 9 below the through hole of the mounting bracket 4, the outer tube 17 can be removed from the internal threaded tube 11 and the inner tube 18 can be put into the outer tube 17. It should be noted that the lower end of the inner tube 18 rests against the upper surface of the furnace door body 2, but is not fixedly connected to the upper surface of the furnace door body 2. When the inner tube 18 is not subjected to upward thrust, it moves downward along the inner wall of the outer tube 17 on its own.

[0029] like Figure 2 and Figure 4 As shown, a tightening bolt 19 is threaded onto the outer tube 17.

[0030] Specifically, tightening bolt 19 can secure the retracted telescopic assembly, thereby facilitating the application of oil to the wire rope 9 below the through hole of the mounting bracket 4 after the telescopic assembly is removed from the internal threaded tube 11.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A furnace door structure for a pushboat furnace, comprising a furnace body (1), wherein the furnace body (1) has an inlet and an outlet at its front and rear ends, and a furnace door body (2) is provided at both the inlet and the outlet, characterized in that: The furnace body (1) has guide rails (3) fixedly connected to both sides of the inlet and outlet. The furnace door body (2) has rollers (10) that match the guide rails (3) on both sides. The guide rails (3) have mounting brackets (4) fixedly connected to both sides. The mounting brackets (4) have several through holes and a drive mechanism for driving the furnace door body (2) to rise and fall is fixedly connected to the mounting brackets (4).

2. The furnace door structure of a pushboat furnace according to claim 1, characterized in that: The drive mechanism includes three sets of fixed blocks (5) fixedly connected to the mounting frame (4). Each set of fixed blocks (5) is rotatably connected to a rotating shaft (6) via a bearing. A guide wheel (7) is fixedly connected to the rotating shaft (6). A hydraulic cylinder (8) is fixedly connected to the mounting frame (4). Two steel wire ropes (9) are fixedly connected to the upper end of the hydraulic cylinder (8). The two steel wire ropes (9) pass through the through hole and are connected to the upper surface of the furnace door body (2) under the guidance of the guide wheel (7).

3. A pushboat furnace door structure according to claim 1 or 2, characterized in that: The upper surface of the mounting frame (4) is equipped with a protective mechanism for covering the guide wheel (7) and two steel wire ropes (9). The lower surface of the mounting frame (4) is fixedly connected with three internally threaded pipes (11). The three internally threaded pipes (11) are threaded with telescopic components for covering the steel wire ropes (9). The protective mechanism includes two rotating blocks (12) fixedly connected to the mounting frame (4). An L-shaped connecting plate (13) is rotatably connected between the two rotating blocks (12). A box body (14) is fixedly connected to the front end of the L-shaped connecting plate (13).

4. The furnace door structure of a pushboat furnace according to claim 3, characterized in that: A rubber ring (15) is fixedly connected to the lower surface of the box (14).

5. The furnace door structure of a pushboat furnace according to claim 3, characterized in that: The telescopic assembly includes an externally threaded tube (16) threaded onto an internally threaded tube (11), an outer tube (17) fixedly connected to the lower end of the externally threaded tube (16), and an inner tube (18) slidably connected to the outer tube (17).

6. The furnace door structure of a pushboat furnace according to claim 4, characterized in that: The telescopic assembly includes an externally threaded tube (16) threaded onto an internally threaded tube (11), an outer tube (17) fixedly connected to the lower end of the externally threaded tube (16), and an inner tube (18) slidably connected to the outer tube (17).

7. A pushboat furnace door structure according to claim 5 or 6, characterized in that: The outer tube (17) is threaded with a tightening bolt (19).

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