Self-limiting type steel billet vertical stacking feeding device

Abstract

The invention discloses a self-limiting type steel billet vertical stacking feeding device, and relates to the technical field of steel billet electric heating furnaces, the self-limiting type steel billet vertical stacking feeding device comprises a vertically arranged heating furnace, a plurality of steel billets capable of sliding up and down are distributed in the heating furnace, and the steel billets are horizontally placed and vertically stacked in the heating furnace; a steel frame is arranged below the heating furnace, a conveying roller and a jacking device are arranged on the steel frame, the jacking device comprises a plurality of jacking ends, and the upper end faces of the jacking ends are matched with the lower end faces of steel billets in a jacking mode; the conveying roller and the jacking end are both arranged under the lower port of the heating furnace; limiting devices used for clamping and limiting steel billets are further arranged on the steel frame, and the limiting devices are distributed on the two sides of the lower end opening of the heating furnace in pairs. The steel billets are vertically stacked, put in and discharged out, oxide skin cannot fall into the heating coil, and the cleaning difficulty is lowered; in addition, due to the design that the heating furnace is vertically arranged, not only is the occupied area reduced, but also the working requirements of various steel billet lengths can be met.

Description

Technical Field

[0001] This invention relates to the field of electric heating furnace technology for steel billets, and in particular to a self-limiting vertical stacking and feeding device for steel billets. Background Technology

[0002] In existing technologies, billet electric heating furnaces typically employ the following two methods:

[0003] 1. The billet is driven by the drive roller, and moves along its length in a straight line through the heating coil (as shown in the attached image). Figure 1 As shown in the image, this method is typically used for hot billet reheating. It is suitable for billet lengths of 6-12 meters. If the billet length is less than 6 meters, the length of the billet may not match the interval between the drive roller and the coil, potentially causing one end of the billet to curl up during transport. If the billet length is greater than 12 meters, there is a possibility that the billet may bend rubbing against the furnace wall or even impact the furnace body. Therefore, this method is only suitable for reheating billets within the 6-12 meter range. Furthermore, because it can only accommodate a single billet passing through the furnace in a straight line with limited dwell time, it is not suitable for heating cold billets.

[0004] II. Based on the length of the rectangular steel billet, a flat coil is used. Heat-resistant thick-walled stainless steel tubing is used as a guide rail on the coil. Multiple steel billets placed side-by-side are pushed laterally through the heating coil (as shown in the attached diagram). Figure 2 As shown, the longer the billet stays in the furnace, the better it is at reducing the temperature difference between the surface and core of the billet. Whether hot-poured or cold-poured, its effect and efficiency are superior to the straight-through coil method. However, this method also has obvious weaknesses: 1. The billet length cannot exceed 6 meters. The longer the billet, the larger the span of the flat coil and the more complex the structure. The refractory material on the upper part is easily detached due to thermal expansion and contraction. 2. During the heating process, the oxide scale continuously falls off and accumulates in the lower coil, affecting work efficiency and making cleaning very difficult. In summary, although this horizontal pushing method has a better heating effect and efficiency than the single straight-through method, it is only suitable for billets under 6 meters in length, and its application is quite limited. Summary of the Invention

[0005] The purpose of this invention is to provide a self-limiting vertical stacking and feeding device for steel billets, which solves the problems mentioned in the background technology that the straight-through coil method is only suitable for steel billet reheating within a range of 6-12 meters, and can only accommodate a single steel billet to pass through the furnace in a straight line with limited dwell time; and the lateral pushing method is limited to steel billets below 6 meters, and the detached oxide scale will accumulate in the coil, making cleaning difficult.

[0006] The present invention adopts the following technical solution:

[0007] This invention discloses a self-limiting vertical stacking and feeding device for steel billets, comprising a vertically arranged heating furnace with an open structure at both the top and bottom. Multiple steel billets that can slide vertically are distributed within the heating furnace, and these billets are arranged horizontally and stacked vertically within the furnace. A steel frame is provided below the heating furnace, and the steel frame is equipped with multiple conveying rollers for transporting the steel billets, as well as a lifting device for lifting the steel billets upwards. The lifting device includes multiple lifting ends arranged between the conveying rollers, and the upper surface of each lifting end engages with a steel billet support.

[0008] The conveying roller and the lifting end are both arranged directly below the lower port of the heating furnace;

[0009] The steel frame is also provided with several limiting devices for clamping and limiting the steel billet. The limiting devices are distributed in pairs on both sides of the lower port of the heating furnace.

[0010] Preferably, the roller shaft of the conveying roller is connected to the output end of the conveying motor, the conveying roller is rotatably mounted on the crossbeam, and both the crossbeam and the conveying motor are mounted on the steel frame.

[0011] Preferably, the cross frame is provided with a reserved gap, and the lifting end is movably disposed within the reserved gap;

[0012] The lifting end is fixedly mounted on the main beam, and the main beam is mounted on the telescopic end of the lifting drive component.

[0013] Preferably, the side wall of the lifting end is provided with a sliding groove, and the crossbeam is provided with a guide pulley, which is slidably connected to the sliding groove.

[0014] Preferably, the crossbeam is further provided with a guide roller assembly, the guide roller assemblies are arranged in pairs on both sides of the front and rear ends of the crossbeam, the guide roller assembly includes a rotating plate, one end of the rotating plate is rotatably connected to the crossbeam, and the other end of the rotating plate is provided with a rotatably connected roller, the roller contacting and cooperating with the side wall of the steel billet;

[0015] The rotating plate is rotatably connected to the telescopic end of the telescopic rod near the roller, and the fixed end of the telescopic rod is rotatably connected to the crossbar.

[0016] Preferably, the limiting device includes a mounting base, which is fixedly connected to the steel frame and distributed in the gap between the lifting ends. An extrusion block is rotatably connected to the mounting base. An anti-slip texture is provided on one end of the extrusion block away from the mounting base. The anti-slip texture is in close contact with the two side walls of the steel billet.

[0017] The mounting base is also provided with a directional limiting plate, which is located on the lower side of the extrusion block;

[0018] Two extrusion blocks in pairs are disposed on both sides of the steel billet, and the shortest distance between the two extrusion blocks is less than the width of the steel billet.

[0019] Preferably, the limiting device includes a mounting base, which is fixedly connected to the steel frame and distributed in the gap between the lifting ends, and a pressing plate is rotatably connected to the mounting base;

[0020] The extrusion pallet is provided with an abutting end at one end away from the steel billet, and the abutting end abuts against the vertical inner wall of the mounting base on the side near the steel frame.

[0021] Two extrusion pallets are arranged on both sides of the steel billet. The shortest distance between the opposite end faces of the two extrusion pallets is less than the width of the steel billet, and the upper end face of one end of the extrusion pallet is in contact with the lower end face of the steel billet.

[0022] Preferably, a transfer device is provided above the heating furnace;

[0023] The transfer device includes a platform plate disposed on the top of the heating furnace. A portal frame is disposed on the platform plate, spanning the upper port of the heating furnace. A first hydraulic cylinder is disposed on the portal frame, and a hydraulic gripper is disposed on the telescopic end of the first hydraulic cylinder. The hydraulic gripper is located directly above the steel billet. The fixed end of the first hydraulic cylinder is fixedly connected to the telescopic end of a second hydraulic cylinder, and the second hydraulic cylinder is disposed on the portal frame.

[0024] A transfer conveyor roller is also provided on one side of the upper port of the heating furnace, and the transfer conveyor roller is located inside the gantry frame.

[0025] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0026] This invention features a vertically arranged heating coil, reducing the footprint of the heating furnace. A water-cooled roller conveyor is installed within the heating coil. A lifting device pushes steel billets one by one, stacked and pushed upwards into the heating furnace for heating, ensuring sufficient heating time. Simultaneously, a limiting device automatically prevents the steel billets from falling. Because the steel billets are fed vertically, even if scale falls off, it will fall directly vertically to the bottom of the heating furnace, facilitating cleaning and collection, and preventing scale from falling into the heating coil, thus reducing cleaning difficulty. This invention offers advantages such as reduced footprint, guaranteed heating time for steel billets, ability to heat steel billets of various lengths, and reduced scale cleaning difficulty. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of a straight line passing through a coil, as mentioned in the background art.

[0029] Figure 2 This is a schematic diagram of the horizontal pushing method mentioned in the background technology;

[0030] Figure 3 This is a schematic diagram of the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0031] Figure 4 This is a side view of the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0032] Figure 5 This is a cross-sectional view of the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1. Figure 1 ;

[0033] Figure 6 This is a cross-sectional view of the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1. Figure 2 ;

[0034] Figure 7 This is a schematic diagram of the heating furnace structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0035] Figure 8 This is a schematic diagram of the limiting device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0036] Figure 9 This is a schematic diagram of the lifting device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1.

[0037] Figure 10 This is a schematic diagram of the conveying roller and crossbeam structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0038] Figure 11 This is a schematic diagram of the limiting device, conveying roller, and steel frame structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1.

[0039] Figure 12 This is a schematic diagram of the chute and guide pulley structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 1;

[0040] Figure 13 This is a schematic diagram of the transfer device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention, as shown in Embodiment 1. Figure 1 ;

[0041] Figure 14 This is a schematic diagram of the transfer device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention, as shown in Embodiment 1. Figure 2 ;

[0042] Figure 15 This is a schematic diagram of the limiting device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 2. Figure 1 ;

[0043] Figure 16 This is a schematic diagram of the limiting device structure in the self-limiting vertical stacking and feeding device for steel billets of the present invention in Embodiment 2. Figure 2 ;

[0044] Explanation of reference numerals in the attached drawings: 1. Heating furnace; 1-1. Water-cooled roller conveyor; 2. Steel billet; 3. Conveying roller; 4. Lifting device; 4-1. Lifting end; 4-1-1. Slide groove; 4-2. Main beam; 4-3. Lifting drive component; 5. Limiting device; 5-1. Mounting base; 5-1-1. Orientation limiting plate; 5-1-2. Fixed shaft; 5-2. Extrusion block; 5-2-1. Anti-slip texture; 5-3. Extrusion support plate; 5 -3-1, Abutting end; 6, Conveyor motor; 7, Horizontal frame; 7-1, Reserved gap; 7-2, Guide pulley; 8, Transfer device; 8-1, Platform plate; 8-2, Gantry frame; 8-3, First hydraulic cylinder; 8-4, Hydraulic gripper; 8-5, Second hydraulic cylinder; 8-6, Transfer conveyor roller; 9, Steel frame; 10, Guide roller assembly; 10-1, Telescopic rod; 10-2, Rotating plate; 10-3, Roller. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Example 1

[0047] like Figures 3 to 7As shown, this embodiment discloses a self-limiting vertical stacking and feeding device for steel billets. The heating furnace 1 has a structure that runs vertically through the furnace and is open at both the top and bottom. Multiple steel billets 2, which can slide vertically, are distributed within the heating furnace 1. The steel billets 2 are placed horizontally and stacked vertically within the heating furnace 1. The heating furnace 1 includes an external steel frame, inside which are closely arranged silicon steel columns serving as a magnetic yoke to constrain and concentrate the magnetic field. The silicon steel columns are circumferentially arranged outside the heating coil, which is a multi-stage induction coil arranged vertically. A parallel resonant power supply, rectifier transformer, frequency converter cabinet, reactor, capacitor cabinet, and other components are arranged on one side of the heating furnace. A water-cooled roller conveyor 1-1 is installed inside the heating coil. The water-cooled roller conveyor 1-1 includes multiple thickened, water-permeable, high-temperature resistant stainless steel pipes. The stainless steel pipes are arranged vertically, and multiple stainless steel pipes are arranged together. The steel billets 2 slide synchronously upwards in the vertical direction within the channels formed by these stainless steel pipes, one close to the other. The water permeating inside the stainless steel pipes cools them and prevents high-temperature damage. The heating furnace 1 is an existing technology and will only be briefly introduced here.

[0048] like Figures 3 to 12 As shown, a steel frame 9 is provided below the heating furnace 1. Several conveying rollers 3 for transporting steel billets 2 are mounted on the steel frame 9, along with a lifting device 4 for lifting the steel billets 2 upwards. The lifting device 4 includes multiple lifting ends 4-1, which are arranged between the conveying rollers 3. The upper end face of the lifting end 4-1 engages with the lower end face of the steel billet 2. In this embodiment, the conveying rollers 3 and the lifting ends 4-1 are both arranged directly below the lower port of the heating furnace 1. Several limiting devices 5 for clamping and limiting the steel billet 2 are also provided on the steel frame 9, with the limiting devices 5 distributed in pairs on both sides of the lower port of the heating furnace 1.

[0049] like Figure 8 As shown, the limiting device 5 includes a mounting base 5-1, which is fixedly connected to the steel frame 9 and distributed in the gap between the lifting ends 4-1. An extrusion block 5-2 is rotatably connected to the mounting base 5-1. Two pairs of extrusion blocks 5-2 are arranged on both sides of the steel billet 2, and the shortest distance between the two extrusion blocks 5-2 is less than the width of the steel billet 2.

[0050] The end of the extrusion block 5-2 facing away from the mounting base 5-1 is provided with anti-slip texture 5-2-1, which fits tightly against the two side walls of the billet 2. The mounting base 5-1 is also provided with a directional limiting plate 5-1-1, which is located on the lower side of the extrusion block 5-2. It should be noted that sufficient height is reserved between the bottom end of the extrusion block 5-2 and the upper end face of the conveying roller 3 to facilitate the conveying and lifting of the billet 2.

[0051] Initially, the extrusion block 5-2 rests on the directional limiting plate 5-1-1. When the lifting end 4-1 lifts the billet 2 upwards, the billet 2 moves upwards between the two extrusion blocks 5-2. The two side walls of the billet 2 contact the anti-slip texture 5-2-1 of the extrusion blocks 5-2, causing the extrusion blocks 5-2 to rotate upwards. When the billet 2 moves upwards to a certain height, the lifting end 4-1 descends to its original position. The billet 2 will fall under its own weight. The extrusion of the two extrusion blocks 5-2 will prevent the billet 2 from falling and will prevent it from falling. The first billet 2 is held in mid-air; then the conveyor roller 3 brings the second billet 2, and the lifting end 4-1 lifts the second billet 2 upward. The second billet 2 moves upward and pushes the first billet 2 upward so that it enters the heating furnace 1. The second billet 2 is located between the two extrusion blocks 5-2. When the predetermined height is reached, the lifting end 4-1 descends and resets. The second billet 2 is then held between the two extrusion blocks 5-2. This process is repeated in sequence, so that the billets 2 are fed into the heating furnace 1 one by one for heating.

[0052] In this embodiment, a fixed shaft 5-1-2 is provided on the mounting base 5-1, and a mounting hole with a smooth inner wall is provided at one end of the extrusion block 5-2. The extrusion block 5-2 is rotatably connected to the fixed shaft 5-1-2 through the mounting hole.

[0053] like Figures 9 to 12 As shown, the lifting end 4-1 is fixedly mounted on the main beam 4-2, and the main beam 4-2 is mounted on the telescopic end of the lifting drive component 4-3. In this embodiment, the lifting drive component 4-3 is a hydraulic cylinder, and the extension of the telescopic end of the hydraulic cylinder can push the lifting end 4-1 upward.

[0054] The roller shaft of the conveyor roller 3 is connected to the output end of the conveyor motor 6. The conveyor roller 3 is rotatably mounted on the crossbeam 7. Both the crossbeam 7 and the conveyor motor 6 are mounted on the steel frame 9. Starting the conveyor motor 6 drives the conveyor roller 3 to rotate, thus transporting the steel billet 2. Those skilled in the art should understand that this device should work in conjunction with an external steel billet 2 conveying device. The external conveying device is located at one end of the crossbeam 7. The external conveying device delivers the steel billet 2 onto the conveyor roller 3, and simultaneously starts the conveyor motor 6 to move the steel billet 2 directly below the lower port of the heating furnace 1.

[0055] The cross frame 7 is also provided with a reserved gap 7-1, and the lifting end 4-1 is set in the reserved gap 7-1 so that the lifting end 4-1 can lift the steel billet 2.

[0056] In this embodiment, the side wall of the lifting end 4-1 is provided with a sliding groove 4-1-1, and the cross frame 7 is provided with a guide pulley 7-2, which is slidably connected to the sliding groove 4-1-1.

[0057] The crossbeam 7 is also equipped with a guide roller assembly 10. The guide roller assemblies 10 are arranged in pairs on both sides of the front and rear ends of the crossbeam 7. The guide roller assembly 10 includes a rotating plate 10-2. One end of the rotating plate 10-2 is rotatably connected to the crossbeam 7. The other end of the rotating plate 10-2 is provided with a rotatably connected roller 10-3. The roller 10-3 is in contact with the side wall of the steel billet 2. The position of the rotating plate 10-2 near the roller 10-3 is rotatably connected to the telescopic end of the telescopic rod 10-1. The fixed end of the telescopic rod 10-1 is rotatably connected to the crossbeam 7. When the billet 2 is directly below the lower end of the heating furnace 1, the roller 10-3 is not in contact with the billet 2. When the lifting end 4-1 lifts the billet 2 upward, the billet 2 comes into contact with the roller 10-3 during the ascent and presses the roller 10-3 and the rotating plate 10-2 outward, causing the telescopic rod 10-1 to be compressed and rotated. Thus, the guide roller assembly 10 guides the billet 2 and prevents the billet 2 from tilting. The telescopic rod 10-1 is a commonly used spring telescopic rod, which is a common existing technology and will not be described here.

[0058] like Figures 13 to 14 As shown, a transfer device 8 is provided above the heating furnace 1. The transfer device 8 includes a platform plate 8-1, which is located on the top of the heating furnace 1. A portal frame 8-2 is provided on the platform plate 8-1, spanning the upper end of the heating furnace 1. A first hydraulic cylinder 8-3 is slidably connected to the portal frame 8-2. In this embodiment, a guide groove is provided inside the portal frame 8-2. The first hydraulic cylinder 8-3 is fixedly mounted on the frame, and a guide rail is provided on the frame. The guide rail and the guide groove are slidably connected, thereby realizing the sliding connection of the first hydraulic cylinder 8-3.

[0059] The telescopic end of the first hydraulic cylinder 8-3 is equipped with a hydraulic gripper 8-4, which is located directly above the steel billet 2. The fixed end of the first hydraulic cylinder 8-3 is fixedly connected to the telescopic end of the second hydraulic cylinder 8-5, which is mounted on the portal frame 8-2. A transfer conveyor roller conveyor 8-6 is also provided on one side of the upper port of the heating furnace 1, located inside the portal frame 8-2. In this embodiment, the transfer conveyor roller conveyor 8-6 consists of multiple sets of conveyor rollers 3 and a conveyor motor 6; its working principle will not be described here. As each steel billet 2 enters the heating furnace 1 for heating and gradually moves to the upper port of the heating furnace 1, the first hydraulic cylinder 8-3 extends to move the hydraulic gripper 8-4 onto the steel billet 2. The hydraulic gripper 8-4 clamps the steel billet 2 on both sides. The first hydraulic cylinder 8-3 then shortens again, and the telescopic end of the second hydraulic cylinder 8-5 extends to move the hydraulic gripper 8-4 and the steel billet 2 directly above the transfer conveyor roller 8-6. Then, the first hydraulic cylinder 8-3 extends again to place the steel billet 2 on the transfer conveyor roller 8-6 for transport.

[0060] Example 2

[0061] likeFigure 15 and Figure 16 As shown, in this embodiment, the limiting device 5 has been redesigned. Specifically, the limiting device 5 includes a mounting base 5-1, which is fixedly connected to the steel frame 9 and distributed in the gap between the lifting ends 4-1. A pressing pallet 5-3 is rotatably connected to the mounting base 5-1. The end of the pressing pallet 5-3 facing away from the steel billet 2 is provided with an abutting end 5-3-1, which abuts against the vertical inner wall of the mounting base 5-1 near the steel frame 9. Two pairs of pressing pallets 5-3 are arranged on both sides of the steel billet 2. The shortest distance between the opposite end faces of the two pairs of pressing pallets 5-3 is less than the width of the steel billet 2, and the upper end face of one end of the pressing pallet 5-3 supports the lower end face of the steel billet 2. It should be noted that sufficient height is reserved between the lowermost end of the pressing pallet 5-3 and the upper end face of the conveying roller 3 to facilitate the conveying and lifting of the steel billet 2. In this embodiment, a fixed shaft 5-1-2 is provided on the mounting base 5-1, and a mounting hole with a smooth inner wall is provided at one end of the extrusion plate 5-3. The extrusion plate 5-3 is rotatably connected to the fixed shaft 5-1-2 through the mounting hole.

[0062] Initially, the extrusion pallet 5-3 is in a horizontal position, with the abutting end 5-3-1 resting against the vertical inner wall of the mounting base 5-1 near the steel frame 9. When the lifting end 4-1 lifts the billet 2 upwards, the billet 2 moves upwards between the two extrusion pallets 5-3. At this time, the extrusion pallets 5-3 rotate upwards accordingly. When the billet 2 reaches a certain height, it no longer contacts the extrusion pallets 5-3, and the extrusion pallets 5-3 fall back to a horizontal position under their own weight. At this time, the lifting end 4-1 descends, and the billet 2 follows, falling onto the two extrusion pallets 5-3 and being supported by them. 1. Continue descending until reset. Then, the conveyor roller 3 brings the second steel billet 2. The lifting end 4-1 lifts the second steel billet 2 upwards. The second steel billet 2 moves upwards and pushes the first steel billet 2 upwards, allowing it to enter the heating furnace 1. It moves upwards until the second steel billet 2 no longer contacts the extrusion support plate 5-3. The extrusion support plate 5-3 falls back to a horizontal state under its own gravity. The lifting end 4-1 descends again, and the second steel billet 2, pushing against the first steel billet 2, descends together. Then, the second steel billet 2 falls onto the two extrusion support plates 5-3 and is supported. This cycle is repeated to feed the steel billets 2 one by one into the heating furnace 1 for heating. In this embodiment, the remaining technical features, connection relationships, and working principles are the same as in Embodiment 1.

[0063] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A self-limiting vertical stacking billet feeding device, comprising a vertical heating furnace (1), the heating furnace (1) is a structure with openings at the top and bottom, and a plurality of billets (2) can slide up and down in the heating furnace (1), and several billets (2) are horizontally placed and vertically stacked in the heating furnace (1); characterized in that: The lower part of the heating furnace (1) is provided with a steel frame (9), a plurality of conveying rollers (3) for conveying the billets (2) are arranged on the steel frame (9), and a lifting device (4) for lifting the billets (2) upward is arranged on the steel frame (9), the lifting device (4) comprises a plurality of lifting ends (4-1), the lifting ends (4-1) are arranged between the conveying rollers (3), and the upper end surface of the lifting ends (4-1) is in abutment with the billets (2); The conveying rollers (3) and the lifting ends (4-1) are arranged directly below the lower end of the heating furnace (1); A plurality of limiting devices (5) for clamping and limiting the billets (2) are further arranged on the steel frame (9), and the limiting devices (5) are arranged in pairs on the two sides of the lower end of the heating furnace (1).

2. The self-limiting billet vertical stacking feed arrangement of claim 1, wherein: The roller shaft of the conveying roller (3) is connected with the output end of a conveying motor (6), the conveying roller (3) is rotatably arranged on a cross frame (7), and the cross frame (7) and the conveying motor (6) are arranged on the steel frame (9).

3. The self-limiting billet vertical stacking feed arrangement of claim 2, wherein: A reserved gap (7-1) is arranged on the cross frame (7), and the lifting ends (4-1) are movably arranged in the reserved gap (7-1); The lifting ends (4-1) are fixedly arranged on a main beam (4-2), and the main beam (4-2) is arranged on the telescopic end of a lifting driving member (4-3).

4. The self-limiting billet vertical stacking feed arrangement of claim 3, wherein: A sliding groove (4-1-1) is arranged on the side wall of the lifting end (4-1), a guide pulley (7-2) is arranged on the cross frame (7), and the guide pulley (7-2) is in sliding connection with the sliding groove (4-1-1).

5. The self-limiting billet vertical stacking feed arrangement of claim 3, wherein: A guide roller assembly (10) is further arranged on the cross frame (7), the guide roller assembly (10) is arranged in pairs on the two sides of the front and rear ends of the cross frame (7), the guide roller assembly (10) comprises a rotating plate (10-2), one end of the rotating plate (10-2) is rotatably connected to the cross frame (7), the other end of the rotating plate (10-2) is provided with a rotatably connected roller (10-3), and the roller (10-3) is in contact with the side wall of the billet (2); The position, close to the roller (10-3), of the rotating plate (10-2) is rotatably connected with the telescopic end of a telescopic rod (10-1), and the fixed end of the telescopic rod (10-1) is rotatably connected to the cross frame (7).

6. The self-limiting billet vertical stacking feed arrangement of claim 1, wherein: The limiting device (5) comprises a mounting seat (5-1), the mounting seat (5-1) is fixedly connected to the steel frame (9) and arranged in the gap between the lifting ends (4-1), a pressing block (5-2) is rotatably connected to the mounting seat (5-1), an anti-skid pattern (5-2-1) is arranged on the end, away from the mounting seat (5-1), of the pressing block (5-2), and the anti-skid pattern (5-2-1) is in close abutment with the two side walls of the billet (2); A directional limiting plate (5-1-1) is further arranged on the mounting seat (5-1), and the directional limiting plate (5-1-1) is located on the lower side of the pressing block (5-2). The two extrusion blocks (5-2) are arranged on both sides of the billet (2), and the shortest distance between the two extrusion blocks (5-2) is less than the width of the billet (2).

7. The self-limiting billet vertical stacking feed arrangement of claim 1, wherein: The limiting device (5) comprises a mounting seat (5-1) fixedly connected to the steel frame (9) and distributed in the gap between the jacking ends (4-1), and an extrusion supporting plate (5-3) is rotatably connected to the mounting seat (5-1); The extrusion supporting plate (5-3) is provided with an abutting end (5-3-1) at one end away from the billet (2), and the abutting end (5-3-1) is in abutting contact with the vertical inner wall of the mounting seat (5-1) on the side close to the steel frame (9); The two extrusion supporting plates (5-3) are arranged on both sides of the billet (2), and the shortest distance between the opposite end faces of the two extrusion supporting plates (5-3) is less than the width of the billet (2), and the upper end face of one end of the extrusion supporting plate (5-3) is in supporting contact with the lower end face of the billet (2).

8. The self-limiting billet vertical stacking feed arrangement of claim 1, wherein: A transfer device (8) is arranged above the heating furnace (1); The transfer device (8) comprises a platform plate (8-1) arranged on the top of the heating furnace (1), and a door-shaped frame (8-2) is arranged on the platform plate (8-1) and spans the upper port of the heating furnace (1), a first oil cylinder (8-3) is slidably connected to the door-shaped frame (8-2), a hydraulic clamp jaw (8-4) is arranged at the telescopic end of the first oil cylinder (8-3), the hydraulic clamp jaw (8-4) is located directly above the billet (2), the fixed end of the first oil cylinder (8-3) is fixedly connected to the telescopic end of a second oil cylinder (8-5), and the second oil cylinder (8-5) is arranged on the door-shaped frame (8-2); The upper port side of the heating furnace (1) is also provided with a transfer conveying roller (8-6), and the transfer conveying roller (8-6) is located in the door-shaped frame (8-2).

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