Fixed blade for multi-section scrap steel shearing machine and scrap steel shearing machine

Abstract

The utility model provides a fixed blade for a multi-section type scrap steel shearing machine and the scrap steel shearing machine, and relates to the technical field of scrap steel shearing equipment, the fixed blade is in a cuboid shape and is provided with a first side face and a second side face which are arranged back to back, and a plurality of connecting holes are formed between the first side face and the second side face; on the side where the first side face is located, the connecting holes expand towards the periphery to form countersunk grooves with steps, and the countersunk grooves corresponding to the connecting holes are not communicated with one another. On the side where the second side face is located, the connecting holes expand towards the periphery to form countersunk grooves with steps, and the countersunk grooves corresponding to the connecting holes are not communicated with one another. The connecting sleeve is used for bearing the acting force between the fixed blade and the fixed blade holder, the shear blades on the first side face and the second side face can be normally used, the utilization rate of the shear blades on the fixed blade is increased, and the use cost of the quick-wear part blade is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of scrap steel shearing equipment, and particularly relates to a fixed blade for a multi-section scrap steel shearing machine and a multi-section scrap steel shearing machine. Background Art

[0002] The scrap steel shearing machine forms shearing by the up and down movement of the moving blade and the fixed blade to realize the shearing of scrap steel. When the blade wears or other unexpected situations occur, it is inevitable that materials will be clamped between the fixed blade and the moving blade. When clamping materials, during the retraction process of the moving blade after cutting the materials, a force will be generated to pull the fixed blade in the retraction direction of the moving blade. If the fixing components of the fixed blade are not firm, the fixing components of the fixed blade are easily damaged and the fixed blade is easily pulled out, affecting the normal use of the equipment.

[0003] The straight-type scrap steel shearing machine, such as the shearing machine shown in Chinese Patent CN201721839080.5, refers to a scrap steel shearing machine whose projection of the entire shearing edge in the moving direction of the moving blade is a straight line. The length of a single fixed blade is usually long (such as 1000 mm), and more installation bolts for a single fixed blade can be set, usually more than 4. Due to its simple structure, the installation bolts of the fixed blade can penetrate the fixed blade seat and adopt the fastening method of bolts plus nuts. In order to minimize the influence of the blade installation bolt holes on the blade strength, it adopts the fastening method of bolts with conical bolt heads plus nuts, and the conical bolt head has anti-loosening tenons, that is, when the bolt is fastened, the bolt itself does not rotate, only the nut rotates. In summary, a single blade of the fixed blade of the straight-type scrap steel shearing machine is fixed on the fixed blade seat by multiple bolts with large diameters and conical bolt heads (such as bolts with a diameter of 48 mm) plus nuts to prevent the fixing device of the fixed blade from being damaged or the fixed blade from being pulled out during material clamping.

[0004] The multi-section scrap steel shearing machine refers to a machine whose projection of the entire cutting edge in the moving direction of the moving blade is not a straight line but consists of multiple straight lines. The multi-section scrap steel shearing edge consists of multiple straight blades. Since customers usually require the discharged material size after shearing to be 300 - 500 mm, the length of a single blade cannot be too long, usually also 300 - 500 mm. Considering the force on the blade and the blade cost (the blade is a vulnerable part), the height of the blade (in the moving direction of the moving blade) cannot be too large and the thickness cannot be too thick, and the fixing bolts of a single blade cannot be set too many or too large. Moreover, since the shearing edge of the multi-section scrap steel shearing machine usually consists of multiple straight lines with an included angle of about 90 degrees, the fastening bolts of the fixed blade are usually installed in the same plane, resulting in the partial installation bolts of different blades intersecting on their extension lines. Therefore, the blade installation bolts cannot all penetrate the fixed blade seat, nor can too long bolts be used (otherwise the installation bolts of two blades will intersect and interfere). In addition, due to space limitations, it is not suitable to adopt the fastening method of bolts plus nuts. Therefore, the fixed blade of the straight-type scrap steel shearing machine cannot adopt the fastening scheme of bolts with conical bolt heads plus nuts.

[0005] In the existing blade installation structure of multi-stage scrap steel shearing machines, in order to prevent the fixing device of the stationary blade from being damaged or the stationary blade from being pulled out during material clamping, as shown in the installation structures of Chinese patents CN213410566U and CN212191506U, a groove structure is usually arranged on the side of the blade, and a boss structure is arranged on the blade mounting seat (referred to as the tool holder). Compared with the connection of a limited number of bolts, the combination of the two can resist greater tensile force to solve such problems. However, in this design, since a relatively large groove is provided in the middle of the blade, the strength of the blade is greatly weakened. If the cutting edge on this side is used for shearing, it is likely to cause damage to the blade. Therefore, the upper and lower cutting edges on the side of the blade with the groove cannot be used, resulting in the number of available cutting edges of the blade being reduced from four in the traditional (referring to the blade of the straight-type scrap steel shearing machine) to two, increasing the use cost of the vulnerable part, the blade. Summary of the Invention

[0006] The technical problem to be solved by this application is to propose a stationary blade for a multi-stage scrap steel shearing machine and a multi-stage scrap steel shearing machine in view of the above deficiencies of the existing technology.

[0007] A stationary blade for a multi-stage scrap steel shearing machine, the stationary blade is in the shape of a cuboid, having a first side and a second side arranged back to back, and a plurality of connection holes are provided between the first side and the second side;

[0008] On the side where the first side is located, the connection holes expand towards the surroundings to form stepped counterbores, and the counterbores corresponding to each connection hole are not connected to each other;

[0009] On the side where the second side is located, the connection holes expand towards the surroundings to form stepped counterbores, and the counterbores corresponding to each connection hole are not connected to each other.

[0010] Optionally, on the first side and the second side, the plurality of connection holes are symmetrically distributed along the symmetry axis of the side.

[0011] Optionally, on the first side and the second side, the counterbore depths of all the connection holes are the same.

[0012] Optionally, the shape of the counterbore is cylindrical.

[0013] On the other hand, this application also provides a scrap steel shearing machine, including:

[0014] A stationary blade assembly, including a stationary tool holder and a plurality of stationary blades installed on the stationary tool holder, the stationary blades being the stationary blades for the multi-stage scrap steel shearing machine as described above;

[0015] A moving blade assembly, including a moving tool holder and a moving blade installed on the moving tool holder;

[0016] A driving source, configured to drive the movable knife assembly to move up and down, so that the movable knife assembly and the fixed knife assembly cooperate to shear materials;

[0017] Wherein, the fixed knife assembly further includes a connecting sleeve and a screw. An installation hole corresponding to the connecting hole on the fixed knife blade is provided on the fixed knife seat, and an expansion groove is provided on the installation hole; the expansion groove of the fixed knife seat and the counterbore of the fixed knife blade are both adapted to the connecting sleeve; the screw is used to fix the fixed knife blade to the fixed knife seat;

[0018] The connecting sleeve is located between the fixed knife seat and the fixed knife blade. One end of it is sleeved into the expansion groove of the fixed knife seat, and the other end of it is sleeved into the counterbore of the fixed knife blade; the screw sequentially passes through the connecting hole on the fixed knife blade, the inner hole of the connecting sleeve and enters the installation hole of the fixed knife seat.

[0019] Optionally, the fixed knife assembly further includes an installation body provided on the fixed knife seat and capable of being separated from the fixed knife seat, and the screw realizes fixing the fixed knife blade to the fixed knife seat by connecting with the installation body.

[0020] Optionally, the installation body is detachably fixed on the fixed knife seat.

[0021] Optionally, the installation hole of the fixed knife seat is a threaded hole adapted to the screw, and the screw realizes fixing the fixed knife blade to the fixed knife seat by connecting with the threaded hole.

[0022] Optionally, the connecting sleeve is cylindrical.

[0023] In this application, the fixed knife blade for the multi-stage scrap steel shearing machine is provided with a stepped counterbore for loading the connecting sleeve on the connecting holes on both sides. When the fixed knife blade is installed, the counterbore can be used to load the connecting sleeve, and the connecting sleeve is used to bear the acting force between the fixed knife blade and the fixed knife seat.

[0024] Compared with the fastening method of using bolts and nuts for the fixed knife of the straight-shaped scrap steel shearing machine, in the same space, since the connecting sleeve has no nut head, the diameter can be set larger. Compared with the bolt, it can bear a greater acting force, and at the same time, it will not significantly weaken the strength of the blade. Therefore, although the number of fixing holes is reduced due to the reduction of the blade length, the bearing capacity of a single connecting sleeve is stronger, so the requirements can still be met.

[0025] Compared with the installation structures shown in Chinese patents CN213410566U and CN212191506U, since the counterbores are not connected to each other, they can only occupy a small area around the connecting holes, retaining the strength of the blade to the greatest extent and enabling the entire blade edge to be used.

[0026] In summary, in the present application, all the cutting blades (a total of four cutting edges) on the first side and the second side can be used normally, improving the utilization rate of the cutting blades on the fixed blade and reducing the use cost of the vulnerable part blade. Brief Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the external structure of the fixed blade for the multi-stage scrap steel shearing machine in the embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the fixed blade for the multi-stage scrap steel shearing machine in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the exploded structure of the fixed knife assembly in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the internal structure of the exploded fixed knife assembly in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the internal structure of the fixed knife assembly in the embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the external structure of the fixed knife assembly in the embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the structure of the scrap steel shearing machine in the embodiment of the present application.

[0034] Figure 8 It is another schematic diagram of the internal structure of the fixed knife assembly in the embodiment of the present application.

[0035] Reference Numerals: Fixed Knife Assembly 100, Fixed Blade 10, First Side 11, Second Side 12, Connection Hole 13, Sunk Groove 14, Fixed Knife Base 20, Mounting Hole 21, Expansion Slot 22, Connection Sleeve 30, Screw 40, Moving Knife Assembly 200, Moving Knife Base 50, Moving Blade 60, Mounting Body 70. Detailed Description of the Embodiments

[0036] The following are specific embodiments of the present application in combination with the drawings, further describing the technical solutions of the present application, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should clearly understand that various changes and modifications can be made to the embodiments described here without departing from the scope and spirit of the present application. Additionally, descriptions of known functions and structures are omitted for clarity and conciseness.

[0037] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] The scrap steel shearing machine is used in the metal shearing processing industry. The multi-stage scrap steel shearing machine includes a fixed knife assembly and a moving knife assembly. The fixed knife assembly includes a fixed knife seat and a plurality of fixed knife blades installed on the fixed knife seat; the moving knife assembly includes a moving knife seat and moving knife blades installed on the moving knife seat. Driven by a driving source, the moving knife assembly moves up and down, and the moving knife blades thereon cooperate with the fixed knife blades to shear materials. The fixed knife blade provided in this application uses a connecting sleeve to bear the acting force between the fixed knife blade and the fixed knife seat. In the same space, compared with bolts, since the connecting sleeve has no nut head, the diameter can be set larger, it can bear a greater acting force, and each cutting edge on the fixed knife blade can be fully utilized, reducing the use cost of the knife blade. The following is a specific description with reference to the drawings.

[0039] As Figure 1 and Figure 2 shown, this application provides a fixed knife blade 10 for a multi-stage scrap steel shearing machine. The fixed knife blade 10 is in the shape of a cuboid, having a first side surface 11 and a second side surface 12 arranged back to back, and a plurality of connecting holes 13 are provided between the first side surface 11 and the second side surface 12. On the side where the first side surface 11 is located, the connecting holes 13 expand towards the surroundings to form stepped sinking grooves 14, and the sinking grooves 14 corresponding to each connecting hole 13 are not communicated with each other; on the side where the second side surface 12 is located, the connecting holes 13 expand towards the surroundings to form stepped sinking grooves 14, and the sinking grooves 14 corresponding to each connecting hole 13 are not communicated with each other. In addition, compared with the installation structures shown in Chinese patents CN213410566U and CN212191506U, since the sinking grooves are not communicated with each other, the strength of the knife blade is retained to the greatest extent, so that all the cutting edges of the knife blade can be used.

[0040] Referring to Figures 3 - 6 shown, the fixed knife blade 10 is installed on the fixed knife seat 20 to form a fixed knife assembly 100. The fixed knife assembly 100 is located below the moving knife assembly and remains stationary during shearing. During shearing, the fixed knife assembly 100 needs to bear the shearing acting force. The connecting holes 13 on the fixed knife blade 10 are provided with sinking grooves 14, and a connecting sleeve 30 can be installed during installation. The connecting sleeve 30 is located between the fixed knife blade and the fixed knife seat to bear the acting force between the fixed knife blade and the fixed knife seat, prevent the fixed knife blade from detaching from the fixed knife seat, and prevent the fixing device of the fixed knife from being damaged when being pulled by the moving knife during material clamping. When installing the fixed knife blade, the screw passes through the inner hole of the connecting sleeve. Specifically, the screw 40 passes through the connecting hole 13 on the fixed knife blade 10 and the inner hole of the connecting sleeve 30 in sequence and enters the installation hole 21 of the fixed knife seat 20, thereby fixing the fixed knife blade 10 on the fixed knife seat 20.

[0041] For each connecting hole 13, a counterbore 14 is provided on the connecting hole 13, and the counterbore 14 expands from the connecting hole 13 to the surroundings, occupying the side area around the connecting hole 13. The counterbores 14 corresponding to each connecting hole 13 are not connected to each other and are independent. Each counterbore 14 only occupies the area around the connecting hole 13. Therefore, compared with the structure in the prior art of arranging a larger groove to cover all the connecting holes, the counterbores of each connecting hole in this application only occupy a smaller area around the connecting hole 13, reducing the impact on the overall structure of the fixed blade and avoiding significantly weakening the strength of the blade.

[0042] As Figure 2 shown, on both sides of the fixed blade 10, that is, on the side where the first side 11 is located and on the side where the second side 12 is located, the connecting hole 13 expands to form a counterbore 14. In the first installation method of the fixed blade, the installation direction of the first side 11 faces the inside of the fixed tool holder 20, and the second side 12 is located on the outside. In this installation method (not shown), the connecting sleeve 30 is inserted into the counterbore 14 on the first side 11 and the extended groove of the fixed tool holder, and the shearing edge above the second side 12 is used for shearing. As Figure 4 shown, in the second installation method of the fixed blade, the installation direction of the second side 12 faces the inside of the fixed tool holder 20, and the first side 11 is located on the outside. In this installation method, the connecting sleeve 30 is inserted into the counterbore 14 on the second side 12 and the extended groove of the fixed tool holder, and the shearing edge above the first side 11 is used for shearing. Figures 3 - 5 In the structure shown, the installation direction of the second side 12 faces the inside of the fixed tool holder 20, and the first side 11 faces the outside of the fixed tool holder 20.

[0043] It should be understood that there are upper and lower sections of available shearing edges on one side of the first side 11. Similarly, there are also upper and lower sections of available shearing edges on one side of the second side 12. In the first installation method of the fixed blade, the positions of the upper and lower sections of the shearing edges on one side of the second side can be exchanged by flipping the fixed blade. Therefore, both the upper and lower sections of the shearing edges of the second side 12 can be used for shearing. In the second installation method of the fixed blade, the positions of the upper and lower sections of the shearing edges on one side of the first side can be exchanged by flipping the fixed blade. Therefore, both the upper and lower sections of the shearing edges of the first side can be used for shearing.

[0044] In an embodiment of this application, on the first side 11 and the second side 12, multiple connecting holes 13 are symmetrically distributed along the axis of symmetry of the side. As Figure 1 shown, the fixed blade is a cuboid, and the first side 11 is a rectangle. On the first side 11 of the fixed blade, there are two axes of symmetry, namely the horizontal axis of symmetry A and the vertical axis of symmetry B. The horizontal axis of symmetry A and the vertical axis of symmetry B also serve as the axes of symmetry for the distribution of the connecting holes 13 on the first side 11. Similarly, on one side of the second side, the second side is a rectangle, and the two axes of symmetry on the second side also serve as the axes of symmetry for the distribution of the connecting holes 13.

[0045] Further, a plurality of connection holes are provided on the fixed blade, and the number N of the connection holes is greater than or equal to 2, specifically, it can be 2, 3, 4, 5,.... As Figure 1 shown, in a specific example, the number of connection holes on the fixed blade is 2.

[0046] Further, on the first side surface 11 and the second side surface 12, the depths of the sinking grooves 14 of all the connection holes 13 are the same. Since the depths of the respective sinking grooves 14 are the same, it is more general for the fittings.

[0047] The sinking groove 14 is located on the connection hole and is formed by expanding around the connection hole 13, and its shape can be set as required. In an embodiment of the present application, the shape of the sinking groove 14 is circular.

[0048] Reference Figure 7 , an embodiment of the present application further provides a scrap steel shearing machine, which includes a fixed knife assembly 100, a moving knife assembly 200, and a driving source; wherein, the fixed knife assembly 100 includes a fixed knife seat 20 and a plurality of fixed blades 10 installed on the fixed knife seat 20, and the fixed blades 10 are the fixed blades 10 for a multi-stage scrap steel shearing machine provided in the previous part; the moving knife assembly 200 includes a moving knife seat 50 and a moving blade 60 installed on the moving knife seat 50; the driving source is used to drive the moving knife assembly 200 to move up and down, so that the moving knife assembly 200 and the fixed knife assembly 100 cooperate to shear materials.

[0049] A plurality of fixed blades 10 are installed on the fixed knife seat 20, and each fixed blade 10 constitutes a cutting edge. In an embodiment of the present application, the fixed blades 10 on the fixed knife seat 20 are arranged in a straight line to form a linear structure. In another embodiment of the present application, the fixed blades 10 on the fixed knife seat 20 are arranged in a bent shape, specifically, in a concave-convex shape. In another embodiment of the present application, the fixed blades 10 on the fixed knife seat 20 are arranged in a bent shape, specifically, in a stepped shape, as Figure 6 and Figure 7 shown. It should be understood that the plurality of fixed blades 10 on the fixed knife seat 20 can be arranged in various shapes, and the above several arrangement methods are only examples for illustration.

[0050] Further, reference Figures 3 - 5, the fixed knife assembly 100 further includes a connecting sleeve 30 and a screw 40. An installation hole 21 corresponding to the connecting hole 13 on the fixed knife blade 10 is provided on the fixed knife base 20, and an expansion slot 22 is provided on the installation hole 21; both the expansion slot 22 of the fixed knife base 20 and the counterbore 14 of the fixed knife blade 10 are adapted to the connecting sleeve 30; the screw 40 is used to fix the fixed knife blade 10 to the fixed knife base 20; the connecting sleeve 30 is located between the fixed knife base 20 and the fixed knife blade 10, one end of which is sleeved in the expansion slot 22 of the fixed knife base 20, and the other end of which is sleeved in the counterbore 14 of the fixed knife blade 10; the screw 40 sequentially passes through the counterbore 14 on the first side 11 of the fixed knife blade 10, the connecting hole 13, the inner hole of the connecting sleeve 30 and enters the installation hole 21 of the fixed knife base 20, and the screw head of the screw 40 is located in the counterbore 14 on the first side 11.

[0051] Specifically, the connecting sleeve 30 is located between the fixed knife base 20 and the fixed knife blade 10, one end of which is sleeved in the expansion slot 22 of the fixed knife base 20, and the other end of which is sleeved in the counterbore 14 of the fixed knife blade 10. Therefore, the connecting sleeve 30 is used to bear the acting force between the fixed knife blade and the fixed knife base, prevent the fixed knife blade from detaching from the fixed knife base, and protect the screw 40 from shearing.

[0052] Both the expansion slot 22 of the fixed knife base 20 and the counterbore 14 of the fixed knife blade 10 are adapted to the connecting sleeve 30. The connecting sleeve 30 can be designed into various shapes as needed. In an embodiment of the present application, the connecting sleeve 30 is circular; when the cross-sections of the expansion slot 22 and the counterbore 14 are rectangular, the connecting sleeve 30 is a cuboid structure.

[0053] Reference Figure 8 , in an embodiment of the present application, the fixed knife assembly 100 further includes an installation body 70 provided on the fixed knife base 20 and capable of being separated from the fixed knife base 20. The screw 40 realizes fixing the fixed knife blade 10 to the fixed knife base 20 by being threadedly connected with the installation body. Since the installation body and the fixed knife base are separable, when the installation body is damaged, only the corresponding installation body needs to be replaced separately. In a specific solution, the installation body is detachably fixed on the fixed knife base 20, such as Figure 8 shown, a threaded connection can be adopted between the installation body 70 and the fixed knife base 20.

[0054] In an embodiment of the present application, the installation hole 21 of the fixed knife base 20 is a threaded hole adapted to the screw 40, and the screw 40 realizes fixing the fixed knife blade 10 to the fixed knife base 20 by being connected with the threaded hole.

[0055] In this application, the fixed blade for the multi-stage scrap steel shearing machine is provided with a counterbore for installing a connecting sleeve on the connecting holes on both sides. When the fixed blade is installed, the counterbore can be used to install the connecting sleeve. By using the connecting sleeve to bear the acting force between the fixed blade and the fixed tool holder, a relatively large acting force can be borne, and the strength of the blade will not be significantly weakened. The shearing edges on the first side and the second side can all be used normally, improving the utilization rate of the shearing edges on the fixed blade and reducing the use cost of the vulnerable part, the blade.

[0056] In the above embodiments of the present application, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A fixed blade for a multi-stage scrap steel shearing machine, characterized in that, The fixed blade is in the shape of a cuboid, having a first side face and a second side face arranged back to back, and a plurality of connecting holes are provided between the first side face and the second side face; On the side where the first side face is located, the connecting holes expand towards the surroundings to form stepped countersinks, and the countersinks corresponding to the respective connecting holes are not communicated with each other; On the side where the second side face is located, the connecting holes expand towards the surroundings to form stepped countersinks, and the countersinks corresponding to the respective connecting holes are not communicated with each other.

2. The fixed blade for a multi-stage scrap steel shearing machine according to claim 1, characterized in that, On the first side face and the second side face, the plurality of connecting holes are symmetrically distributed along the axis of symmetry of the side face.

3. The fixed blade for the multi-stage scrap steel shearing machine according to claim 1, wherein On the first side face and the second side face, the countersink depths of all the connecting holes are the same.

4. The fixed blade for the multi-stage scrap steel shearing machine according to claim 1, characterized in that, The shape of the countersink is cylindrical.

5. A scrap steel shearing machine, characterized in that, Comprising: A fixed knife assembly, including a fixed knife seat and a plurality of fixed blades installed on the fixed knife seat, the fixed blades being the fixed blades for a multi-stage scrap steel shearing machine according to any one of claims 1-4; A moving knife assembly, including a moving knife seat and a moving blade installed on the moving knife seat; A driving source for driving the moving knife assembly to move up and down so that the moving knife assembly and the fixed knife assembly cooperate to shear materials; Wherein, the fixed knife assembly further includes a connecting sleeve and a screw. An installation hole corresponding to the connecting hole on the fixed blade is provided on the fixed knife seat, and an expansion groove is provided on the installation hole; the expansion groove of the fixed knife seat and the countersink of the fixed blade are both adapted to the connecting sleeve; the screw is used to fix the fixed blade to the fixed knife seat; The connecting sleeve is located between the fixed knife seat and the fixed blade, one end of which is sleeved into the expansion groove of the fixed knife seat, and the other end of which is sleeved into the countersink of the fixed blade; the screw sequentially passes through the connecting hole on the fixed blade and the inner hole of the connecting sleeve and enters the installation hole of the fixed knife seat.

6. The scrap steel shearing machine according to claim 5, characterized in that, The fixed knife assembly further includes an installation body provided on the fixed knife seat and capable of being separated from the fixed knife seat, and the screw realizes fixing the fixed blade to the fixed knife seat by connecting with the installation body.

7. The scrap steel shearing machine according to claim 6, characterized in that, The installation body is detachably fixed on the fixed knife seat.

8. The scrap shearer according to claim 5, wherein, The installation hole of the fixed knife seat is a threaded hole matched with the screw, and the screw realizes fixing the fixed blade to the fixed knife seat by connecting with the threaded hole.

9. The scrap shearing machine according to claim 5, characterized in that, The connecting sleeve is cylindrical.

Images