A pusher type furnace material pad track

Abstract

The utility model discloses a kind of material pad tracks for push type heating furnace, including heating furnace, rack, hydraulic push rod, feed track, material conveying track, material pad, the rack is provided with before heating furnace feed inlet, the front side upper surface of the rack is fixedly installed with hydraulic push rod, the rear side of the rack is fixedly installed with feed track, the material conveying track is fixedly installed in heating furnace, and the front end of material conveying track is parallel with the rear end of feed track and is connected, for the stable transition conveying the material pad, the material pad is placed on the V-shaped guide groove of feed track or material conveying track by its downside V-shaped guide rail.

Description

Technical Field

[0001] This utility model patent belongs to the technical field of pusher furnace feeding equipment, specifically relating to a material pad track for a pusher-type heating furnace. Background Technology

[0002] A pusher furnace is a type of heating furnace that uses natural gas to heat copper ingots through burners. The aluminum alloy ingots to be heated are fed into the furnace chamber via a hydraulic propulsion device. Two parallel tracks are installed at the furnace inlet, with a pad on each track. The copper ingot to be heated is placed on the pad, and the pad, propelled by the propulsion device, carries the ingot from the feed end to the discharge end of the furnace to complete the heating process. After the ingot detaches from the pad, the pad needs to be transferred from the discharge end to the feed end of the pusher furnace to again support and transport the ingot. Traditional pad track systems have the following technical problems in the heating process of aluminum alloy ingots: Large contact area: Traditional pads have a large contact area with the bottom surface of aluminum ingots, which leads to excessively fast heat conduction in the contact area, while the non-contact area mainly relies on radiation and convection for heating, resulting in uneven heating.

[0003] Severe shielding effect: The contact area between the aluminum ingot and the pad is shielded, and the hot air cannot circulate effectively, forming a "cold spot" that affects the overall heating quality of the aluminum ingot.

[0004] Low thermal efficiency: Due to the large contact area, a large amount of heat is lost through conduction through the pad instead of being used to heat the aluminum ingot, resulting in energy waste.

[0005] Long heating time: Due to the limited heating area, the heating time needs to be extended to achieve the temperature uniformity required by the process, which affects production efficiency.

[0006] While Chinese utility model patent CN210512651U and other related technologies have improved the support structure of the material pad, the grooves in the track used to install the rollers are prone to dust accumulation, causing the rollers to jam and making cleaning difficult. Furthermore, they have not effectively solved the problem of uneven heating caused by excessively large contact areas. Especially in the production of high-quality aluminum alloy sheets, heating uniformity directly affects the microstructure and properties of the final product.

[0007] Therefore, this utility model proposes a material pad track for a propulsion heating furnace. Utility Model Content

[0008] To address the aforementioned issues, this invention proposes a material pad track for a propulsion-type heating furnace. By optimizing the contact structure between the material pad and the aluminum ingot, the contact area between the two is reduced, thereby improving the flow of hot air during the heating process. This solves the problems of uneven heating, severe shading effect, low thermal efficiency, and long heating time inherent in traditional material pad track systems. At the same time, it avoids operational failures caused by dust accumulation on the track, thus meeting the process requirements for uniform heating in the production of high-quality aluminum alloy sheets.

[0009] To achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: a material pad track for a propulsion heating furnace, including a heating furnace, a frame, a hydraulic push rod, a feeding track, a conveying track, and a material pad. A frame is provided in front of the feeding port of the heating furnace. A hydraulic push rod is fixedly installed on the upper front surface of the frame. A feeding track is fixedly installed on the rear side of the frame. The conveying track is fixedly installed in the heating furnace, and the front end of the conveying track is parallel to the rear end of the feeding track for smooth transition conveying of the material pad. The material pad is placed on the V-shaped guide groove of the feeding track or the conveying track through the V-shaped guide rail on its lower side. The material pad is provided with several through holes for conducting hot airflow and several support protrusions for supporting the bottom surface of the material.

[0010] In a preferred embodiment, the feeding track and the conveying track each include a bearing seat, a graphite self-lubricating bearing, a roller, a shaft, and a V-shaped guide groove. The bearing seats are arranged in two parallel rows on the rear side of the frame. The bearing seats are equipped with graphite self-lubricating bearings. The rollers are provided with shafts at both ends and the shafts are installed in the graphite self-lubricating bearings. The rollers are provided with V-shaped guide grooves corresponding to the V-shaped guide rails on the left and right sides.

[0011] The technical advantages of adopting the above-mentioned further solution are as follows: This structure facilitates precise matching between the material pad and the V-shaped guide groove on the roller via the V-shaped guide rail, achieving stable sliding. Simultaneously, the graphite self-lubricating bearing effectively reduces the coefficient of friction during roller rotation, minimizing jamming, and can withstand high-temperature environments, extending the equipment's service life. Furthermore, the roller design transforms the traditional surface contact between the track and the material pad into a line contact, significantly reducing the contact area and thus minimizing obstruction to hot airflow. This helps the hot airflow to act more evenly on the bottom surface of the material through the through-holes in the material pad, alleviating the "cold spot" problem and improving heating uniformity.

[0012] In a preferred embodiment, the diameter of the inner center of the V-shaped guide groove of the conveying track is equal to that of the roller.

[0013] The technical effect of adopting the above-mentioned further solution is that the design of this structure allows for a larger hot airflow space in the middle of the rollers in the heating furnace, thereby enhancing the heat radiation coverage of the bottom of the material, reducing local temperature differences caused by the obstruction of the track structure, and further improving the heating uniformity.

[0014] In a preferred embodiment, baffles are provided at both the front and rear ends of the pad.

[0015] The technical effect of adopting the above-mentioned further solution is that the design of this structure can limit the position of the metal ingot on the pad.

[0016] In a preferred embodiment, the surface of the pad is provided with support protrusions arranged in a matrix or staggered manner, forming a hot air flow channel between the support protrusions. The contact area of ​​a single support protrusion accounts for 3%-8% of the bottom area of ​​the aluminum ingot, and the total contact area does not exceed 25% of the bottom area of ​​the aluminum ingot.

[0017] The technical advantages of adopting the above-mentioned further solution are as follows: This structure, through a matrix or staggered arrangement of support protrusions, optimizes the contact between the bottom surface of the material and the pad from the traditional large-area contact to a dispersed point contact. The design of a single support protrusion having a contact area ratio of 3%-8% and a total contact area not exceeding 25% minimizes heat conduction loss. Simultaneously, the hot airflow channels formed between the protrusions, combined with the through-holes on the pad, allow the hot airflow to flow more fully at the bottom of the material and penetrate to the surface, significantly improving heat exchange efficiency, shortening heating time, and reducing energy consumption. Furthermore, this dispersed support method avoids temperature gradient differences caused by localized overheating or undercooling of the material, further ensuring heating uniformity, thereby improving the final product's structural stability and performance consistency.

[0018] In a preferred embodiment, the top of the supporting protrusion is provided with a high-temperature resistant ceramic pad, the height of the supporting protrusion is lower than the baffles at both ends of the pad, and the shape of the supporting protrusion is cylindrical, square, frustum conical or hemispherical, with an arc-shaped contact surface on the top to disperse pressure.

[0019] The technical effects of adopting the above-mentioned further solution are as follows: the high-temperature resistant ceramic gasket in this structure can reduce the heat conduction efficiency between the metal ingot and the support protrusion, reduce heat loss in the contact area, and the high-temperature resistance of the ceramic material can also extend the service life of the support protrusion; the design of the support protrusion being lower than the baffle can prevent the material from slipping off the sides of the pad due to shaking during the conveying process, and the support protrusion, together with the arc-shaped contact surface, can not only meet the material support requirements, but also prevent the bottom surface of the material from being indented or deformed due to excessive local stress by dispersing pressure.

[0020] In a preferred embodiment, the pad body is provided with a reinforcing rib structure inside, and the reinforcing rib structure extends along the direction of the supporting protrusions.

[0021] The technical effect of adopting the above-mentioned further solutions is to ensure that the overall structural strength is not reduced while reducing the contact area.

[0022] The beneficial effects of this utility model are: This invention optimizes the contact structure between the pad and the track, transforming the traditional surface contact into a line contact combined with point support, significantly reducing heat conduction loss and shielding effects. Specifically, the roller design of the feeding and conveying tracks drastically reduces the contact area during pad sliding; the precise fit between the V-shaped guide groove and the V-shaped guide rail ensures conveying stability; and the graphite self-lubricating bearing effectively improves operational smoothness under high-temperature conditions, reducing jamming failures. The support protrusions on the pad surface are arranged in a matrix or staggered pattern. By controlling the proportion of individual and total contact area, sufficient channels for hot air flow are reserved while ensuring support strength, and the through-hole design further enhances heat exchange efficiency. The application of high-temperature resistant ceramic pads reduces the heat conduction rate in the contact area, while the reinforcing rib structure ensures the overall rigidity of the pad despite its lightweight structure. These improvements work synergistically to effectively solve problems such as uneven heating, low thermal efficiency, and easy jamming in traditional pad-track systems, improving temperature uniformity and production continuity during the heating process of aluminum alloy ingots, which is of great significance for ensuring the microstructure and properties of the final product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. Figure 1 The structure of this utility model Figure 1 ; Figure 2 This is the front view of the present invention; Figure 3 This utility model Figure 2 A cross-sectional schematic diagram of AA in the middle; Figure 4 The structure of this utility model Figure 2 ; The attached diagram lists the components represented by each number as follows: 1. Heating furnace; 2. Frame; 3. Hydraulic push rod; 4. Material pad; 5. V-shaped guide rail; 6. V-shaped guide groove; 7. Through hole; 8. Shaft seat; 9. Graphite self-lubricating bearing; 10. Roller; 11. Roller shaft; 12. Baffle; 13. Supporting protrusion; 14. Reinforcing rib structure. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0025] like Figures 1 to 4 As shown, the existing technology in this embodiment has the following problems: The inventors found that the traditional material pad track system has the following technical problems: large contact area, serious shielding effect, low thermal efficiency, and long heating time. Although Chinese utility model patent CN210512651U and other related technologies have improved the support structure of the material pad, the groove in the track used to install the roller is prone to dust accumulation, causing the roller to jam and making it difficult to clean. At the same time, it has failed to effectively solve the problem of uneven heating caused by excessive contact area.

[0026] Therefore, the inventor provides a material pad track for a propulsion heating furnace, including a heating furnace 1, a frame 2, a hydraulic push rod 3, a feeding track, a conveying track, and a material pad 4. The frame 2 is provided in front of the feeding port of the heating furnace 1. The hydraulic push rod 3 is fixedly installed on the upper front surface of the frame 2. The feeding track is fixedly installed on the rear side of the frame 2. The conveying track is fixedly installed in the heating furnace 1, and the front end of the conveying track is parallel to the rear end of the feeding track for smooth transition conveying of the material pad 4. The material pad 4 is placed on the V-shaped guide groove 6 of the feeding track or the conveying track through the V-shaped guide rail 5 on its lower side. The material pad 4 is provided with several through holes 7 for conducting hot air flow and several support protrusions 13 for supporting the bottom surface of the material.

[0027] Furthermore, both the feeding track and the conveying track include bearing seats 8, graphite self-lubricating bearings 9, rollers 10, roller shafts 11, and V-shaped guide grooves 6. The bearing seats 8 are arranged in two parallel rows on the rear side of the frame 2. Graphite self-lubricating bearings 9 are installed on the bearing seats 8. Rollers 11 are provided at both ends of the rollers 10 and the roller shafts 11 are installed in the graphite self-lubricating bearings 9. V-shaped guide grooves 6 corresponding to the V-shaped guide rails 5 are provided on the left and right sides of the rollers 10.

[0028] In this embodiment, the structure facilitates the precise engagement of the material pad 4 with the V-shaped guide groove 6 on the roller 10 via the V-shaped guide rail 5, enabling stable sliding. Simultaneously, the graphite self-lubricating bearing 9 effectively reduces the coefficient of friction during roller 11 rotation, minimizing jamming and adapting to high-temperature environments, thus extending equipment lifespan. Furthermore, the roller 10 transforms the traditional surface contact between the track and the material pad 4 into a line contact, significantly reducing the contact area and thus minimizing obstruction to hot airflow. This allows the hot airflow to act more evenly on the bottom surface of the material through the through-holes 7 on the material pad 4, alleviating the "cold spot" problem and improving heating uniformity.

[0029] Furthermore, the diameter of the inner center of the V-shaped guide groove 6 of the conveying track roller 10 is equal to that of the roller 11.

[0030] In this embodiment, the design of this structure allows for a larger hot airflow space in the middle of the roller 10 in the heating furnace 1, thereby enhancing the thermal radiation coverage of the bottom of the material, reducing local temperature differences caused by the obstruction of the track structure, and further improving heating uniformity.

[0031] Furthermore, baffles 12 are provided at both the front and rear ends of the pad 4.

[0032] In this embodiment, the structure is designed to limit the position of the metal ingot on the pad 4.

[0033] Furthermore, the surface of the pad 4 is provided with support protrusions 13 arranged in a matrix or staggered manner, and hot air flow channels are formed between the support protrusions 13. The contact area of ​​a single support protrusion 13 accounts for 3%-8% of the bottom area of ​​the aluminum ingot, and the total contact area does not exceed 25% of the bottom area of ​​the aluminum ingot.

[0034] In this embodiment, the structure optimizes the contact between the bottom surface of the material and the pad 4 from a traditional large-area contact to a dispersed point contact through a matrix or staggered arrangement of support protrusions 13. The design, with each support protrusion 13 accounting for 3%-8% of the contact area and the total contact area not exceeding 25%, minimizes heat conduction loss. Simultaneously, the hot airflow channels formed between the protrusions, in conjunction with the through-holes 7 on the pad 4, allow the hot airflow to flow more fully at the bottom of the material and penetrate to the surface, significantly improving heat exchange efficiency, shortening heating time, and reducing energy consumption. Furthermore, this dispersed support method avoids temperature gradient differences caused by localized overheating or undercooling of the material, further ensuring heating uniformity and thus improving the final product's structural stability and performance consistency.

[0035] Furthermore, the top of the supporting protrusion 13 is provided with a high-temperature resistant ceramic pad, the height of the supporting protrusion 13 is lower than the baffles 12 at both ends of the pad 4, and the supporting protrusion 13 is cylindrical, square, frustum conical or hemispherical in shape, with an arc-shaped contact surface on the top to disperse pressure.

[0036] In this embodiment, the high-temperature resistant ceramic gasket in the structure can reduce the heat conduction efficiency between the metal ingot and the supporting protrusion 13, reducing heat loss in the contact area. At the same time, the high-temperature resistance of the ceramic material can also extend the service life of the supporting protrusion 13. The design of the supporting protrusion 13 being lower than the baffle 12 can prevent the material from slipping off the sides of the pad 4 due to shaking during the conveying process. The supporting protrusion 13, in conjunction with the arc-shaped contact surface, can not only meet the material support requirements, but also prevent the bottom surface of the material from being indented or deformed due to excessive local stress by dispersing pressure.

[0037] Furthermore, the material pad 4 body is provided with a reinforcing rib structure 14 inside, and the reinforcing rib structure 14 extends along the arrangement direction of the supporting protrusion 13.

[0038] In this embodiment, the design of the structure ensures that the overall structural strength is not reduced while the contact area is decreased.

[0039] The working principle of this utility model: In operation, the material to be heated is first placed on the pad 4, with the bottom surface of the material in contact with the supporting protrusions 13. The protrusions provide stable support, and the space between the material and the pad 4, created by the spacing of the protrusions, allows for the flow of hot air. Then, the hydraulic push rod 3 is activated, pushing the pad 4 along the V-shaped guide groove 6 of the feeding track towards the conveying track. The V-shaped guide rail 5 on the underside of the pad 4 precisely engages with the V-shaped guide groove 6 on the roller 10, allowing for smooth sliding under the rotational support of the roller 10. The graphite self-lubricating bearing 9 ensures that the roller 11 rotates flexibly in high-temperature environments, preventing jamming. After the pad 4 enters the heating furnace 1 through the junction of the feeding track and the conveying track, the conveying track continues to receive and transport the pad 4. The hot airflow inside the heating furnace 1 passes through the through holes 7 on the pad 4 and the channels between the supporting protrusions 13, contacting the material from multiple directions, including the bottom and sides, achieving uniform heating. After heating is complete, the pad 4 can be output from the other end of the heating furnace 1 under subsequent pushing force or other traction mechanisms, completing the entire material heating and conveying process. During this process, the baffles 12 at both ends of the pad 4 prevent the material from slipping, the reinforcing rib structure 14 ensures the load-bearing strength of the pad 4, and the high-temperature resistant ceramic pad reduces heat loss and protects the bottom surface of the material from damage. The coordinated action of all components achieves efficient, stable and uniform material heating and conveying operation.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A material pad track for a pusher-type heating furnace, comprising a heating furnace (1), a frame (2), a hydraulic push rod (3), a feeding track, a conveying track, and a material pad (4), wherein a frame (2) is provided in front of the feeding port of the heating furnace (1), and a hydraulic push rod (3) is fixedly installed on the upper front surface of the frame (2), characterized in that: The frame (2) is fixedly installed with a feeding rail on the rear side. The conveying rail is fixedly installed in the heating furnace (1). The front end of the conveying rail is connected parallel to the rear end of the feeding rail for smooth transition conveying of the pad (4). The pad (4) is placed on the V-shaped guide groove (6) of the feeding rail or the conveying rail through the V-shaped guide rail (5) on its lower side. The pad (4) is provided with several through holes (7) for conducting hot air flow and several support protrusions (13) for supporting the bottom surface of the material.

2. The material pad track for a propulsion-type heating furnace according to claim 1, characterized in that: The feeding track and conveying track both include bearing seats (8), graphite self-lubricating bearings (9), rollers (10), roller shafts (11), and V-shaped guide grooves (6). The bearing seats (8) are arranged in two parallel rows on the rear side of the frame (2). Graphite self-lubricating bearings (9) are installed on the bearing seats (8). Rollers (11) are provided at both ends of the rollers (10) and the roller shafts (11) are installed in the graphite self-lubricating bearings (9). V-shaped guide grooves (6) corresponding to the V-shaped guide rails (5) are provided on the left and right sides of the rollers (10).

3. The material pad track for a propulsion-type heating furnace according to claim 2, characterized in that: The diameter of the inner middle part of the V-shaped guide groove (6) of the roller (10) of the material conveying track is equal to that of the roller (11).

4. The material pad track for a propulsion-type heating furnace according to claim 1, characterized in that: The pad (4) is provided with baffles (12) at both the front and rear ends.

5. The material pad track for a propulsion-type heating furnace according to claim 1, characterized in that: The surface of the pad (4) is provided with support protrusions (13) arranged in a matrix or staggered manner. Hot air flow channels are formed between the support protrusions (13). The contact area of ​​a single support protrusion (13) accounts for 0.1%-0.3% of the bottom area of ​​the aluminum ingot, and the total contact area does not exceed 25% of the bottom area of ​​the aluminum ingot.

6. The material pad track for a propulsion-type heating furnace according to claim 5, characterized in that: The top of the support protrusion (13) is provided with a high-temperature resistant ceramic pad. The height of the support protrusion (13) is lower than the baffles (12) at both ends of the pad (4). The support protrusion (13) is cylindrical, square, frustum conical or hemispherical in shape, and the top is provided with an arc-shaped contact surface to disperse pressure.

7. The material pad track for a propulsion-type heating furnace according to claim 1, characterized in that: The pad (4) body is provided with a reinforcing rib structure (14), and the reinforcing rib structure (14) extends along the arrangement direction of the supporting protrusion (13).

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