A conveying device for heat treatment

Abstract

The present application relates to the technical field of conveying equipment, and discloses a conveying device for heat treatment, which is used to solve the problem of uneven wear or deformation of transmission devices inside and outside the heat treatment equipment. The support shaft fixed on the support plate is changed to be set on a large chain, and the large chain can be driven to rotate by a large flywheel, and a power structure is provided on the power shaft of the large flywheel; when loading, the power structure is pushed by the discharge structure, so that the power shaft drives the large flywheel and the large chain to rotate, thereby driving the support shaft and conveying roller on the large chain to rotate, so that the support shaft and conveying roller can cyclically pass through the heat treatment equipment, and all the support shafts and conveying rollers on the conveying device are in the same time inside and outside the heat treatment equipment, thereby achieving the purpose of uniform wear or uniform deformation of the support shafts and conveying rollers of the conveying device.

Description

Technical Field

[0001] The present application relates to the technical field of conveying equipment, and in particular to a conveying device for heat treatment. Background Art

[0002] Heat treatment is a metal heat processing technology, which mainly uses heating, insulation and cooling to make the metal material obtain the expected structure and performance in the solid state. During the heat treatment process, the metal material is first heated to a certain temperature to make its crystal structure undergo a phase change; then, in the insulation stage, the metal material is kept at a constant temperature for a period of time to ensure that the phase change process is complete; finally, in the cooling stage, the metal material is gradually cooled to room temperature to obtain the expected structure and performance.

[0003] In the existing continuous heat treatment equipment, a conveyor device is inserted through the heat treatment equipment, and then the metal material is continuously transmitted to the inside of the heat treatment equipment through the conveyor device. However, the existing conveyor roller type conveyor device has a large temperature difference between the part inside the heat treatment equipment and the part outside the heat treatment equipment. During long-term use, the conveyor roller inside the heat treatment equipment is greatly worn or deformed. When the conveyor roller is replaced regularly, all the transmission rollers on the conveyor device are often replaced, which greatly wastes the conveyor rollers outside the heat treatment equipment that are not damaged. Summary of the invention

[0004] The present application proposes a conveying device for heat treatment, which has the advantage of making the conveying roller wear evenly, and is used to solve the problem of uneven wear or deformation of the transmission device inside and outside the heat treatment equipment.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: a conveying device for heat treatment, comprising a support plate and a discharge structure, wherein the two ends of the support plate are respectively movably sleeved with a power shaft, and the power shaft is provided with: a large flywheel, fixedly sleeved at the two ends of the power shaft and close to the inner wall of the support plate; a large chain, sleeved on the large flywheel on the same side of the two power shafts; a connecting block, fixedly installed on the chain links of the large chains on both sides; a support shaft, with both ends fixedly connected to the connecting blocks at the same position on the large chain; a conveying roller, movably sleeved on the support shaft and located in the middle position of the support shaft, and two small flywheels arranged in parallel are respectively fixedly sleeved at the two ends of the conveying roller; a small chain, movably sleeved on the small flywheels of two adjacent conveying rollers, used to drive the two adjacent conveying rollers; a power motor, fixedly installed on one side of the support plate, and two small flywheels are fixedly sleeved on the output shaft, and the small flywheel on the output shaft is connected to the small chain in transmission; a power structure, movably arranged at both ends of one of the power shafts, used to drive the power shaft and the large flywheel to drive the large chain to rotate.

[0006] Furthermore, the power structure includes: a torsion spring, one end of which is fixedly connected to the side wall of the support plate, and the center line is on the same straight line as the center line of the power shaft; a retaining ring, which is fixedly connected to the other end of the torsion spring; a retaining groove, a circular array of which is opened on the side of the retaining ring facing the end of the power shaft; a power rod, both ends of which are respectively fixedly connected to the top of the retaining rings on both sides, and both ends of the power rod span the support plates on both sides; a plurality of wedge blocks are provided in the circular array at both ends of the power shaft, and the wedge blocks are located in the retaining grooves.

[0007] Furthermore, a retaining ring is provided on the fixed sleeve of the conveying roller close to the inner small flywheel.

[0008] Furthermore, the number of wedge blocks at both ends of the power shaft, the number of grooves on the inner wall of the clamping ring and the number of teeth on the large flywheel are the same; when the power rod drives the clamping ring to rotate, the angle of each rotation of the clamping ring is the angle occupied by one groove.

[0009] Furthermore, the torsion spring always has torque, and a limit block is fixedly installed on the side wall of the support plate at a position below the discharge structure.

[0010] Furthermore, the connecting block includes: a shell, fixedly installed on the inner side of the chain link of the large chain, and a mounting groove is provided on the side of the shell facing the support shaft; a slider, slidably installed in the mounting groove of the shell, the slider is fixedly connected to the end face of the support shaft on the side facing the support shaft, and the surface of the support shaft facing downward is an inclined surface; an extrusion block, slidably installed at the bottom end of the mounting groove of the shell, the extrusion block is a permanent magnet block, and the surface of the extrusion block facing the slider is an inclined surface; a compression spring, one end of which is fixedly connected to the top of the slider, and the other end is fixedly connected to the mounting inner wall of the shell; limit plates are fixedly installed on the inner walls of the support plates on both sides and close to the position of the discharge structure, and the end of the limit plate facing downward is close to the upper wall of the end of the conveying roller; a mounting plate is fixedly connected to the inner wall of the support plate and is directly below the limit plate, and an electromagnet is fixedly installed on the top of the mounting plate, and the side wall of the electromagnet faces the connecting block, and the side wall of the electromagnet faces the side wall of the extrusion block.

[0011] Furthermore, when the electromagnet is energized, the magnetic pole generated by one end of the electromagnet facing the extrusion block is the same as the magnetic pole generated by one end of the extrusion block facing the electromagnet.

[0012] Furthermore, the extrusion block can only slide into the mounting groove of the shell and will not slide outside the mounting groove of the shell.

[0013] Furthermore, a number of connecting plates are equidistantly arranged inside the support plate, a top plate is fixedly mounted on the top of the connecting plate, the surface of the top plate facing the upper end is an inclined surface, and the end of the top plate close to the discharge structure is lower than the end away from the discharge structure; oblique grooves are provided at both ends of the side walls of the support shaft and towards the large flywheel.

[0014] This application has the following beneficial effects:

[0015] 1. The present application provides a conveying device for heat treatment, which is achieved by replacing a support shaft fixed on a support plate with a large chain, and the large chain can be driven to rotate by a large flywheel, and a power structure is provided on the power shaft of the large flywheel; when loading materials, the power structure is pushed by the discharge structure, so that the power shaft drives the large flywheel and the large chain to rotate, thereby driving the support shaft and conveying rollers on the large chain to rotate, so that the support shaft and conveying rollers can circulate through the heat treatment equipment, and all the support shafts and conveying rollers on the conveying device are in the same time inside and outside the heat treatment equipment, thereby achieving the purpose of uniform wear or uniform deformation of the support shafts and conveying rollers of the conveying device.

[0016] 2. The present application provides a conveying device for heat treatment, in which a connecting block is provided between the support shaft and the large chain, and the connecting block includes a shell, a slider, an extrusion block and a compression spring. A mounting plate, an electromagnet and a limit plate are provided on the inner wall of the support plate at the loading position. Each time the connecting block, the support shaft and the conveying roller pass through the electromagnet, the electromagnet pushes the extrusion block, so that the extrusion block pushes the slider and the support shaft upward, and the top end of the support shaft is against the limit plate to level the support shaft, so that the conveying roller on the support shaft is in a horizontal state, thereby preventing the support shaft and the conveying roller from tilting and causing the transmission offset of the metal material above.

[0017] 3. The present application provides a conveying device for heat treatment, in which a plurality of connecting plates and a top plate are equidistantly arranged on the inner wall of a support plate, and inclined grooves are opened at both ends of the side walls of a support shaft; when the large flywheel drives the large chain, the connecting block, the support shaft and the conveying roller to rotate, the top plate is pressed against the inclined groove of the support shaft, causing the inclined groove to move upward, thereby causing the support shaft to drive the conveying roller and the metal material at the upper end of the conveying roller to move upward, causing the metal material to move toward the conveying roller without protrusions, thereby preventing the metal material from slipping and staying at the same position of the conveying device for a long time, affecting the subsequent conveying of the metal material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0019] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention after removing one side of the support plate;

[0022] Figure 3A cross-sectional view of a support plate on one side of the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of the local structure at center A;

[0024] Figure 5 It is a schematic diagram of a part of the power structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the connection of the connection block, the support shaft, the conveying roller and the electromagnet of the present invention;

[0026] Figure 7 It is a longitudinal section view of the present invention from the center line of the power motor;

[0027] Figure 8 For the present invention Figure 7 A magnified view of the local structure at B in the middle;

[0028] Fig. 9 is a cross-sectional view of the present invention;

[0029] Fig.10 For the present invention Fig. 9 Enlarged view of the local structure at point C in the middle.

[0030] In the figure: 1. support plate; 101. discharge structure; 102. limit block; 2. power shaft; 201. wedge block; 3. large flywheel; 4. large chain; 5. connecting block; 501. shell; 502. slider; 503. extrusion block; 504. compression spring; 6. support shaft; 601. inclined groove; 7. conveyor roller; 701. small flywheel; 702. retaining ring; 8. power structure; 801. retaining ring; 802. retaining groove; 803. torsion spring; 804. power rod; 805. small chain; 9. power motor; 10. mounting plate; 11. electromagnet; 12. limit plate; 13. connecting plate; 14. top plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 3A conveying device for heat treatment comprises a support plate 1, a material discharge structure 101 is movably provided above one end of the support plate 1, the material discharge structure 101 is used to clamp the metal material, the material discharge structure 101 can slide on the support plate 1, power shafts 2 are movably sleeved at both ends of the support plate 1, large flywheels 3 are fixedly sleeved at both ends of the power shaft 2 and close to the inner wall of the support plate 1, a large chain 4 is sleeved on the large flywheel 3 on the same side of the two power shafts 2 (in order to support the large chain 4 and prevent the middle position of the large chain 4 from being concave, a plurality of large flywheels 3 can be provided between the large flywheels 3 at both ends for supporting the large chain 4), the large chain 4 is used for the transmission of the two large flywheels 3, and connecting blocks 5 are fixedly installed on the chain links at the same position of the large chains 4 on both sides, and the two connecting blocks 5 are fixedly connected to the support At both ends of the shaft 6, the support shaft 6 is used to support the conveying roller 7. The support shaft 6 is movably provided with a conveying roller 7 for conveying metal. The conveying roller 7 is in the middle position of the support shaft 6. Two small flywheels 701 arranged in parallel are fixedly provided at both ends of the conveying roller 7. The small flywheels 701 of two adjacent conveying rollers 7 are connected by a small chain 805. A power motor 9 is fixedly installed on one side of the support plate 1. The output shaft of the power motor 9 passes through the support plate 1. Two small flywheels 701 are fixedly provided on the output shaft of the power motor 9, and the small flywheel 701 on the output shaft of the power motor 9 is connected by a small chain 805. A power structure 8 is movably provided at both ends of one of the power shafts 2. The power structure 8 is used to drive the power shaft 2 and the large flywheel 3 to drive the large chain 4 to rotate.

[0034] See also Figure 3-Figure 5 The power structure 8 includes a snap ring 801, a torsion spring 803 and a power rod 804. A plurality of snap grooves 802 are formed in an annular array on one side of the snap ring 801 facing the end of the power shaft 2. A torsion spring 803 is fixedly connected to the side wall of the support plate 1 at the other end of the snap ring 801. The power rod 804 is fixedly connected to the top of the snap ring 801. Both ends of the power rod 804 cross the support plates 1 on both sides and are respectively connected to the snap rings 801 on both sides. 1; a plurality of wedge blocks 201 are arranged in an annular array at both ends of the power shaft 2 facing the snap ring 801, and the wedge blocks 201 are in the clamping groove 802. When the power rod 804 drives the snap ring 801 to rotate in a direction away from the discharge structure 101, the clamping groove 802 of the snap ring 801 can drive the wedge blocks 201 and the power shaft 2 to rotate, thereby completing the rotation of the power shaft 2 and the large flywheel 3, so that the large flywheel 3 drives the large chain 4 and the connecting blocks 5, the support shaft 6 and the conveying roller 7 on the chain links to move.

[0035] A retaining ring 702 is fixedly mounted on the conveying roller 7 near the inner small flywheel 701 . The retaining ring 702 is used to prevent the metal material on the conveying roller 7 from hitting the small flywheel 701 .

[0036] The number of wedge blocks 201 at both ends of the power shaft 2, the number of slots 802 on the inner wall of the snap ring 801 and the number of teeth on the large flywheel 3 are the same; and when the power rod 804 drives the snap ring 801 to rotate, the angle of each rotation of the snap ring 801 is the angle occupied by one slot 802. When the material discharge structure 101 is loaded each time, the angle of the power structure 8 rotation is pushed, which will cause the large chain 4 on the large flywheel 3 to move forward by a distance of one chain link, preventing the large chain 4 from rotating too fast, so that the connecting block 5, the support shaft 6 and the conveying roller 7 on the large chain 4 are quickly moved out of the heat treatment equipment, bringing out more heat.

[0037] Torsion spring 803 always has torque, see Figure 1 A limit block 102 is fixedly installed on the side wall of the support plate 1 and below the discharge structure 101 . The limit block 102 is used to limit the rotation of the power structure 8 , thereby limiting the position of the power structure 8 .

[0038] The working principle of the first embodiment of the present invention is as follows:

[0039] See also Figure 1-Figure 5 In the process of using the conveying device to convey the metal material to the heat treatment equipment, the metal material is clamped by the discharge structure 101, and the discharge structure 101 slides on the upper end of the support plate 1 to place the metal material on the conveying roller 7. In the process of the discharge structure 101 moving, the discharge structure 101 pushes the power rod 804 to move, so that the power rod 804 drives the clamping ring 801 to rotate, so that the clamping groove 802 in the clamping ring 801 drives the wedge block 201 to rotate, and the power shaft 2 rotates synchronously with the wedge block 201. When the power shaft 2 rotates, the large flywheel 3 on the power shaft 2 will also rotate. At this time, the large chain 4 on the large flywheel 3 moves toward the inside of the heat treatment equipment, and the connecting block 5, the support shaft 6 and the conveying roller 7 on the chain link of the large chain 4 will move toward the inside of the heat treatment equipment, and the discharge When the structure 101 places a metal material on the conveying roller 7 once, the power structure 8 will drive the large flywheel 3 to rotate once, thereby allowing the connecting block 5, the support shaft 6 and the conveying roller 7 to circulate step by step into the heat treatment equipment. In addition, the time that each group of connecting blocks 5, support shafts 6 and conveying rollers 7 of the conveying device is inside the heat treatment equipment and outside the heat treatment equipment is the same, and the wear of the connecting blocks 5, support shafts 6 and conveying rollers 7 in the hotter environment is the same as the external wear, so that the wear of each support shaft 6 and conveying roller 7 is in a uniform state. When all of them are worn out, the support shaft 6 and conveying roller 7 are replaced, thereby preventing uneven wear of each support shaft 6 and conveying roller 7, and preventing the support shaft 6 and conveying roller 7 with less wear from being wasted when all of them are replaced.

[0040] Embodiment 2

[0041] When the conveying device in the first embodiment is used to convey the metal material that needs heat treatment, the metal material is above the conveying roller 7. Since the metal material is not necessarily in a regular shape, the gravity on both sides of the metal material will also be different. During the conveying process, due to the different pressures on both sides of the conveying roller 7, the friction between the conveying roller 7 and the support shaft 6 will also be different, resulting in the conveying roller 7 being severely worn on the side with greater gravity and less worn on the other side, so that the conveying roller 7 is in a slightly tilted state. In the subsequent process of conveying the metal material, the metal material may deviate to the side and hit the mechanisms on both sides of the conveying device. The second embodiment is a further improvement on the first embodiment.

[0042] The difference from the first embodiment is that, please refer to Figure 6-Figure 8 , the connecting block 5 includes a shell 501, a slider 502, an extrusion block 503 and a compression spring 504, the shell 501 is fixedly installed on the inner side of the chain link of the large chain 4, the shell 501 is provided with a mounting groove on the side facing the support shaft 6, the slider 502 is slidably installed in the mounting groove, the slider 502 can slide longitudinally in the mounting groove of the shell 501, the slider 502 is fixedly connected to the end surface of the support shaft 6 on the side facing the support shaft 6, the surface of the support shaft 6 facing downward is an inclined surface, and the extrusion block 503 is slidably installed at the bottom end of the mounting groove of the shell 501, the extrusion block 503 is a permanent magnet block, the surface of the extrusion block 503 facing the slider 502 is an inclined surface, the inclined surface of the extrusion block 503 is close to the inclined surface of the slider 502, and when the extrusion block 503 slides into the mounting groove of the shell 501, the extrusion block 503 will push the slider 502 to move up, and the top of the slider 502 is fixedly connected to the compression spring 504, and the other end of the compression spring 504 is fixedly connected to the installation inner wall of the shell 501;

[0043] A limiting plate 12 is fixedly installed on the inner walls of the support plates 1 on both sides and close to the discharge structure 101. The limiting plate 12 is L-shaped, and the end of the limiting plate 12 facing downward is close to the upper wall of the end of the conveying roller 7. The inner wall of the support plate 1 is fixedly connected with a mounting plate 10 just below the limiting plate 12. An electromagnet 11 is fixedly installed on the top of the mounting plate 10. The side wall of the electromagnet 11 faces the connecting block 5, and the side wall of the electromagnet 11 faces the side wall of the extrusion block 503.

[0044] When the electromagnet 11 is energized, the magnetic pole generated by one end of the electromagnet 11 facing the extrusion block 503 is the same as the magnetic pole generated by one end of the extrusion block 503 facing the electromagnet 11 , that is, the electromagnet 11 generates a magnetic force that repels the extrusion block 503 .

[0045] The extrusion block 503 can only slide into the installation groove of the shell 501 and cannot slide outside the installation groove of the shell 501.

[0046] The working principle of the second embodiment of the present invention is as follows:

[0047] See also Figure 1-Figure 8 In the process of using the conveying device to convey the metal material to the heat treatment equipment, the metal material is loaded through the discharge structure 101. During the movement of the discharge structure 101, the power rod 804 is pushed to move, so that the power rod 804 drives the clamping ring 801 to rotate, so that the clamping ring 801 drives the power shaft 2 and the large flywheel 3 to rotate, and the large chain 4 on the large flywheel 3 drives the connecting block 5, the supporting shaft 6 and the conveying roller 7 to move in a circular manner. In this process, each connecting block 5 will pass through the mounting plate 10 and the electromagnet 11. Since the electromagnet 11 is energized in the starting state, when the connecting block 5 passes through the electromagnet 11, the magnetic force generated by the electromagnet 11 to repel the extrusion block 503 pushes the extrusion block 503 to the mounting of the shell 501. The sliding block 502 moves in the groove, so that the inclined surface of the extrusion block 503 pushes the sliding block 502 to move upward, that is, the sliding block 502 drives the support shaft 6 and the conveying roller 7 to move upward. When the support shaft 6 moves upward for a certain distance, the top end of the support shaft 6 will support the limiting plate 12. The limiting plate 12 limits the position of the support shaft 6, so that the position of the top end of each support shaft 6 is the same. When the position of the support shaft 6 is the same, the position of the conveying roller 7 sleeved on the outside of the support shaft 6 is also the same, so as to correct the position of the support shaft 6 and the conveying roller 7 on both sides, so that the support shaft 6 and the conveying roller 7 remain horizontal during the process of conveying the metal material, thereby preventing the metal material on the conveying roller 7 from offsetting, causing the metal material to hit the structures on both sides of the conveying device.

[0048] Embodiment 3

[0049] Embodiment 3 is a further improvement on embodiment 2.

[0050] The difference from the second embodiment is that please refer to Fig. 9 and Fig.10 A plurality of connecting plates 13 are equidistantly arranged inside the support plate 1, and the height of the connecting plates 13 is the same as the height of the mounting plate 10. A top plate 14 is fixedly mounted on the top of the connecting plate 13. The top plate 14 is inclined toward the upper end. The end of the top plate 14 close to the discharge structure 101 is lower than the end away from the discharge structure 101. Please refer to Figure 6 An inclined groove 601 is provided at both ends of the side wall of the support shaft 6 and facing the large flywheel 3.

[0051] The working principle of the third embodiment of the present invention is as follows:

[0052] See also Figure 1-Figure 10In the process of using the conveying device to convey the metal material to the heat treatment equipment, the metal material is loaded through the discharge structure 101. During the movement of the discharge structure 101, the power rod 804 is pushed to move, so that the power rod 804 drives the clamping ring 801 to rotate, so that the clamping ring 801 drives the power shaft 2 and the large flywheel 3 to rotate, and the large chain 4 on the large flywheel 3 drives the connecting block 5, the supporting shaft 6 and the conveying roller 7 to move in a circular manner. In this process, the cyclically moving connecting block 5, the supporting shaft 6 and the conveying roller 7 will pass through the connecting plate 13 and the top plate 14, and the inclined groove 6 of the supporting shaft 6. 01 will slide with the top of the top plate 14, and the top plate 14 will lift up the support shaft 6 to move the support shaft 6 upward. When metal material slips on the conveying roller 7 and stays on the conveying device due to placement problems or angle problems, the upward moving support shaft 6 will drive the conveying roller 7 to move upward, thereby lifting up the metal material above the conveying roller 7 and moving the metal material toward the lower support shaft 6 and conveying roller 7, thereby completing the adjustment of the position of the metal material above the conveying roller 7 and preventing the metal material from slipping for a long time and staying on the conveying roller 7, affecting the subsequent conveying of the metal material.

Claims

1. A conveying device for heat treatment, comprising a support plate (1) and a material discharge structure (101), characterized in that: The two ends of the support plate (1) are movably sleeved with a power shaft (2), and the power shaft (2) is provided with: A large flywheel (3) is fixedly sleeved on both ends of the power shaft (2) and close to the inner wall of the support plate (1); A large chain (4) is sleeved on a large flywheel (3) on the same side of the two power shafts (2); A connecting block (5) is fixedly mounted on the chain links of the large chains (4) on both sides; A support shaft (6) with both ends fixedly connected to a connecting block (5) at the same position on the large chain (4); A conveying roller (7) is movably sleeved on the support shaft (6) and is located in the middle of the support shaft (6); two small flywheels (701) arranged in parallel are fixedly sleeved on both ends of the conveying roller (7); A small chain (805) is movably mounted on the small flywheels (701) of two adjacent conveying rollers (7) and is used to drive the two adjacent conveying rollers (7); The power motor (9) is fixedly mounted on one side of the support plate (1), and two small flywheels (701) are fixedly sleeved on the output shaft, and the small flywheels (701) on the output shaft are drivingly connected to the small chain (805); A power structure (8) is movably disposed at both ends of one of the power shafts (2) and is used to drive the power shaft (2) and the large flywheel (3) to drive the large chain (4) to rotate; The power structure (8) comprises: A torsion spring (803), one end of which is fixedly connected to the side wall of the support plate (1), and the center line of which is on the same straight line as the center line of the power shaft (2); A snap ring (801) is fixedly connected to the other end of the torsion spring (803); The clamping grooves (802) are arranged in an annular array on one side of the clamping ring (801) facing the end of the power shaft (2); A power rod (804), both ends of which are fixedly connected to the top ends of the clamping rings (801) on both sides, and both ends of the power rod (804) span the support plates (1) on both sides; A plurality of wedge-shaped blocks (201) are provided in an annular array at both ends of the power shaft (2), and the wedge-shaped blocks (201) are located in the slots (802); The connection block (5) comprises: A housing (501) is fixedly mounted on the inner side of a chain link of the large chain (4), and a mounting groove is provided on a side of the housing (501) facing the support shaft (6); A slider (502) is slidably mounted in a mounting groove of the housing (501); the side of the slider (502) facing the support shaft (6) is fixedly connected to the end surface of the support shaft (6); and the surface of the support shaft (6) facing downward is an inclined surface; An extrusion block (503) is slidably mounted at the bottom end of the mounting groove of the housing (501); the extrusion block (503) is a permanent magnet block; and a surface of the extrusion block (503) facing the slider (502) is an inclined surface; A compression spring (504), one end of which is fixedly connected to the top of the slider (502), and the other end of which is fixedly connected to the mounting inner wall of the housing (501); A limit plate (12) is fixedly installed on the inner wall of the support plates (1) on both sides and close to the discharge structure (101), and one end of the limit plate (12) facing downward is in close contact with the upper wall of the end of the conveying roller (7); A mounting plate (10) is fixedly connected to the inner wall of the support plate (1) and directly below the limit plate (12); an electromagnet (11) is fixedly mounted on the top of the mounting plate (10); the side wall of the electromagnet (11) faces the connecting block (5), and the side wall of the electromagnet (11) faces the side wall of the extrusion block (503).

2. A heat treatment conveying device according to claim 1, characterized in that: The conveying roller (7) is fixedly sleeved with a retaining ring (702) at a position close to the inner small flywheel (701).

3. A heat treatment conveying device according to claim 1, characterized in that: The number of wedge blocks (201) at both ends of the power shaft (2), the number of inner wall slots (802) of the snap ring (801) and the number of teeth of the large flywheel (3) are the same; when the power rod (804) drives the snap ring (801) to rotate, the angle of each rotation of the snap ring (801) is the angle occupied by one slot (802).

4. A heat treatment conveying device according to claim 1, characterized in that: The torsion spring (803) always has torque, and a limit block (102) is fixedly installed on the side wall of the support plate (1) at a position below the discharge structure (101).

5. A heat treatment conveying device according to claim 4, characterized in that: When the electromagnet (11) is energized, the magnetic pole generated by one end of the electromagnet (11) facing the extrusion block (503) is the same as the magnetic pole generated by one end of the extrusion block (503) facing the electromagnet (11).

6. A heat treatment conveying device according to claim 4, characterized in that: The extrusion block (503) can only slide into the installation groove of the shell (501) and cannot slide outside the installation groove of the shell (501).

7. A heat treatment conveying device according to claim 4, characterized in that: A plurality of connecting plates (13) are equidistantly arranged inside the support plate (1), a top plate (14) is fixedly mounted on the top of the connecting plate (13), a surface of the top plate (14) facing the upper end is an inclined surface, and an end of the top plate (14) close to the discharge structure (101) is lower than an end away from the discharge structure (101); Oblique grooves (601) are provided at both ends of the side wall of the support shaft (6) and facing the large flywheel (3).

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