Milling wheel assembling component and milling excavator

Abstract

The milling wheel assembling assembly comprises a base body, a cutting tooth assembly and a torque transmission structure, a plurality of bosses with inserting grooves are spirally distributed on the outer surface of the base body, and the cutting tooth assembly comprises a tooth seat and cutting teeth installed in a seat hole of the tooth seat; the bottom of the tooth holder is provided with a quick insertion tenon which is matched with the insertion groove through an inclined surface to form a self-locking structure so as to offset tangential force, radial force and axial force during cutting, the torque transmission mechanism comprises a driving shaft and wedge-shaped blocks which are arranged on the side faces of the square shaft section of the driving shaft respectively and attached to the side faces, and the outer side faces of the wedge-shaped blocks are matched with the curved surface of the inner cavity of the base body. A step is arranged on the outer edge of an inner cavity of the base body, the end cover is arranged on the step and fixed to the driving shaft through a fastener, and a pre-tightening bolt for adjusting the axial position of the wedge block is arranged on the end cover in a penetrating mode. The problems that an existing toothholder is low in welding positioning precision, a welding seam is prone to cracking due to impact loads, consequently, the toothholder is difficult to replace, the matching face of a driving shaft and a milling wheel is damaged due to the impact loads, and transmission efficiency is low are solved.

Description

Technical Field

[0001] The invention belongs to the field of milling and crushing machinery, and in particular relates to a milling wheel assembly component and a milling excavator. Background Art

[0002] The milling wheel is the cutting and crushing executive structure of the milling excavator. The traditional milling wheel cutter seat system mostly adopts the form of welding the tooth seat to the base body, which has the following problems: (1) The welding positioning of the tooth seat is prone to welding deformation, and the positioning accuracy after welding is low. (2) Since the tooth seat bears impact loads, the tooth seat weld cracks often occur. (3) The tooth seat has wear problems during normal operation and needs to be replaced. However, the spatial positioning of the tooth seat is complex, and the traditional marking positioning method cannot meet the positioning accuracy requirements of the tooth seat. At present, the tooth seat is mostly positioned in space by a robot or tooling. When the tooth seat needs to be replaced, it needs to be returned to the factory for repair, which is costly and difficult to operate. On the other hand, the milling wheel drive mostly adopts the form of a polygonal shaft at the end of the drive shaft or a polygonal hole in the milling wheel to transmit torque. Due to assembly requirements and processing errors, the mating surface often does not fit tightly, which easily causes the mating hole and shaft surface to be damaged by impact during the milling wheel operation, and there is also a problem of high processing accuracy requirements for the mating surface.

[0003] Figure 9 A manufacturer's existing milling wheel design utilizes coordinate transformations to position the tooth adapter in space and welds it to the base. However, due to the impact loads the milling wheel experiences during operation and the agitation of the material after cutting, this can easily lead to cracking in the tooth adapter welds or wear on the teeth, necessitating repositioning and replacement of the tooth adapter. Because the tooth adapter is positioned using three cylindrical coordinates and three coordinate transformation angles, it requires tooling or a robot for spatial positioning. Repairs require return to the manufacturer with manufacturing capabilities, significantly increasing maintenance complexity and costs.

[0004] Figure 10 This is a schematic diagram of a torque transmission mechanism from a certain manufacturer. Torque transmission is achieved through the square hole in the milling wheel mating with the square shaft at the end of the drive shaft. Due to assembly requirements and machining precision limitations, a gap exists between the square hole and the shaft. During cutting, the milling wheel creates an impact load. Prolonged impact loading can cause deformation and damage to the mating surfaces, complicating the process and reducing component life. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a milling wheel assembly component and a milling excavator, which solves the problems in the existing technology of low tooth seat welding positioning accuracy, welds easily cracked by impact loads, making replacement of tooth seats difficult, and the mating surface of the drive shaft and the milling wheel damaged by impact loads, low transmission efficiency, and short life of driving parts.

[0006] The technical solution provided by the present invention is as follows:

[0007] The present invention provides a milling wheel assembly component, including a base, a pick assembly and a torque transmission structure. The outer surface of the base is spirally distributed with a plurality of bosses with insertion grooves. The pick assembly includes a tooth seat and a pick installed in the tooth seat seat hole. The bottom of the tooth seat is provided with a quick-insertion tenon which cooperates with the insertion groove through an inclined surface to form a self-locking structure to offset the tangential force, radial force and axial force during cutting. The torque transmission mechanism includes a drive shaft and wedge blocks which are respectively provided on each side of the square shaft section of the drive shaft and fit therewith. The outer side surface of each wedge block cooperates with the inner cavity curved surface of the base, and an anti-torsion limiter is provided between the matching surfaces. The outer edge of the inner cavity of the base is provided with a step, and the end cover is placed on the step and fixed to the drive shaft through a fastener. The end cover is also provided with a pre-tightening bolt for adjusting the axial position of the wedge block.

[0008] Furthermore, the quick-insert tenon on the tooth seat and the insertion groove on the boss both adopt a dovetail-type inclined surface that is wide in the front and narrow in the back. A tooth seat fixing bolt is also passed through the tooth seat and the boss to prevent the pick assembly from reversing and falling out. The insertion groove is provided with a fixing bolt hole corresponding to the tooth seat fixing bolt.

[0009] Furthermore, a cylindrical step is provided below the square shaft section, each wedge block is provided in a space enclosed by the cylindrical step and the square shaft section, and an adjustment gap is provided between adjacent wedge blocks.

[0010] Furthermore, the wedge block is arranged in an arc shape and includes an inner side surface of the wedge block, an outer side surface of the wedge block, a left side of the wedge block and a right side of the wedge block. The inner side surface of the wedge block is a plane that fits the side of the square axis, the outer side surface of the wedge block is a conical surface with an inclined angle, and the left side and the right side of the wedge block are upward inclined planes that are mirror-set.

[0011] Furthermore, the anti-torsion limiter includes a cylindrical pin, and the inner cavity of the roller is provided with an inner conical surface with the same angle as the outer side surface of the wedge block near the drive shaft side, and the inner conical surface in the middle of the outer side surface of the wedge block and the middle of the outer side surface of the corresponding wedge block are both provided with semicircular holes along the conical slope, and the cylindrical pin is inserted into the complete cylindrical hole composed of two semicircular holes to prevent the relative rotation of the wedge block and the base.

[0012] Furthermore, the wedge block is provided with a pre-tightening threaded hole that cooperates with the pre-tightening bolt, and the axial pressing force of the wedge block is adjusted by the screwing depth of the pre-tightening bolt.

[0013] Furthermore, the end cover is fixedly connected to the drive shaft by being screwed into a plurality of threaded holes on the end surface of the square shaft section of the drive shaft through axial bolts.

[0014] Furthermore, the pick is restricted in the seat hole of the tooth seat by a retaining spring.

[0015] The present invention also provides a milling excavator, comprising the above-mentioned milling wheel assembly component.

[0016] Beneficial effects

[0017] The present invention realizes the rapid installation of the cutting tooth assembly and the synchronous offset of multi-directional forces through the quick-insertion tenon at the bottom of the tooth seat and the inclined self-locking structure of the insertion groove on the boss, thereby greatly improving the assembly efficiency and cutting stability; the torque transmission mechanism adopts the fitting design of the square shaft segment and the divided wedge block, and cooperates with the anti-torsion limiter and pre-tightening bolt adjustment to effectively enhance the torque transmission rigidity and adjust the gap, thereby extending the life of the components; the end cover is connected to the drive shaft by fasteners to prevent the axial disengagement of the milling wheel. This assembly has the advantages of modular quick disassembly and high load reliability, and is particularly suitable for continuous milling operations under complex geological conditions.

[0018] The present invention achieves rapid and precise positioning and impact resistance of the tooth holder by designing a dovetail groove boss with limiting and positioning functions on the outer surface of the milling wheel base. The dovetail groove structure mechanically limits the tooth holder when subjected to impact loads. The inner surface of the dovetail groove sets the spatial position according to the positioning parameters of the pick, enabling rapid and precise positioning during the tooth holder maintenance process. This improves the reliability and manufacturing accuracy of the tool holder system, significantly reducing the replacement time and maintenance costs of the tooth holder.

[0019] The present invention arranges a wedge block with clamping and adaptive functions on the outside of the drive shaft, and axially pre-tightens multiple wedge blocks distributed circumferentially to adjust the pressure of contact with the drive shaft, thereby changing the clamping force; the block-type installation method can effectively compensate for errors in the processing process, realize efficient transmission of the drive shaft, avoid damage to the mating surface of the milling wheel and the drive shaft during the impact operation due to the installation gap between the milling wheel and the drive shaft, reduce the precision requirements for processing and manufacturing, improve the service life of the drive parts, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the milling wheel assembly of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the cooperation between the base and the pick assembly of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a base with a boss according to the present invention;

[0023] Figure 4 This is a force analysis diagram of the pick of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the cooperation between the base and the torque transmission mechanism of the present invention;

[0025] Figure 6 The AA section is the cooperation between the base body and the torque transmission mechanism of the present invention;

[0026] Figure 7The BB section is the cross section of the base body and the torque transmission mechanism of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the wedge block of the present invention;

[0028] Figure 9 Schematic diagram of the existing milling wheel structure;

[0029] Figure 10 Schematic diagram of an existing torque transmission mechanism.

[0030] Explanation of the accompanying drawings: 1. Base; 1-1. Boss; 1-1-1. Insertion slot; 1-1-2. Fixing bolt hole; 1-2. Second semicircular hole; 1-3. Inner conical surface; 2. Gear seat; 3. Gear seat fixing bolt; 4. Drive shaft; 4-1. Square shaft section; 5. Column pin; 6. End cover; 7. Axial bolt; 8. Pre-tightening bolt; 9. Cutting tooth; 10. Retaining spring; 11. Wedge block; 11-1. Inner surface of wedge block; 11-2. Pre-tightening threaded hole; 11-3. Left side of wedge block; 11-4. First semicircular hole; 11-5. Outer surface of wedge block. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Example 1

[0035] like Figure 1 As shown, an embodiment of the present invention provides a milling wheel assembly component, including a base 1, a pick assembly and a torque transmission structure. The outer surface of the base 1 is spirally distributed with a plurality of bosses 1-1 with insertion grooves 1-1-1. The pick assembly includes a tooth seat 2 and a pick 9 installed in the seat hole of the tooth seat 2. The bottom of the tooth seat 2 is provided with a quick-insert tenon that cooperates with the insertion groove 1-1-1 through an inclined surface to form a self-locking structure to offset the tangential force, radial force and axial force during cutting. The torque transmission mechanism includes a drive shaft 4 and wedge blocks 11 respectively provided on each side of the square shaft section 4-1 of the drive shaft 4 and fitted therewith. The outer side surface of each wedge block 11 cooperates with the inner cavity curved surface of the base 1, and an anti-torsion limiter is provided between the mating surfaces. The outer edge of the inner cavity of the base 1 is provided with a step, and the end cover 6 is placed on the step and fixed to the drive shaft 4 through a fastener. The end cover 6 is also provided with a pre-tightening bolt 8 for adjusting the axial position of the wedge block 11.

[0036] The present invention realizes the rapid installation of the cutting tooth assembly and the synchronous offset of multi-directional forces through the quick-insertion tenon at the bottom of the tooth seat and the inclined self-locking structure of the base boss insertion groove, thereby greatly improving the assembly efficiency and cutting stability; the torque transmission mechanism adopts the fitting design of the square shaft segment and the divided wedge block, and cooperates with the anti-torsion limiter and pre-tightening bolt adjustment to effectively enhance the torque transmission rigidity and adjust the gap, thereby extending the life of the components; the end cover is connected to the drive shaft by fasteners to prevent the axial disengagement of the milling wheel. This assembly has the advantages of modular quick disassembly and high load reliability, and is particularly suitable for continuous milling operations under complex geological conditions.

[0037] Example 2

[0038] like Figure 1As shown, an embodiment of the present invention provides a milling wheel assembly component, including a base 1, a tooth seat 2, a tooth seat fixing bolt 3, a drive shaft 4, a cylindrical pin 5, an end cover 6, an axial bolt 7, a pre-tightening bolt 8, a cutting tooth 9, a retaining spring 10 and a wedge block 11. The tooth seat 2 and the pick 9 constitute a cutting unit, namely a pick assembly. The pick 9 is mechanically limited in the seat hole of the tooth seat 2 by a retaining spring 10 to prevent the pick 9 from escaping from the seat hole of the tooth seat 2. The pick assembly is arranged in a spiral line on several bosses 1-1 of the base 1. A plug-in groove 1-1-1 is provided on the boss 1-1. The bottom surface of the tooth seat 2 is also provided with a quick-insert tenon that matches the boss 1-1. The positioning of the tooth seat 2 can be achieved by the inclined surface cooperation between the plug-in groove 1-1-1 and the quick-insert tenon. Specifically, when the milling wheel rotates for milling, the pick 9 invades the cutting material. The pick 9 is subjected to a tangential force along the tangent direction of the cutting diameter, a radial force inward along the diameter of the tool shank, and an axial force parallel to the axis of the base. The boss 1-1 on the base 1 can rely on the structural cooperation between the plug-in groove 1-1-1 and the quick-insert tenon to offset the three-directional forces, and the greater the impact load, the tighter the fit between the tooth seat 2 and the boss 1-1 ( Figure 4 The drive shaft 4 and the wedge block 11 constitute a torque transmission mechanism. The end of the drive shaft 4 is a square shaft section 4-1. The wedge blocks 11 are evenly distributed on the four sides of the square shaft section 4-1 to form square holes. The outer side of each wedge block 11 cooperates with the inner surface of the base body 1, and an anti-torsion limiter is provided between the matching surfaces. Specifically, when the transmission system of the milling excavator drives the milling wheel to perform cutting operations, the torque of the drive shaft 4 is transmitted to the circumferentially distributed wedge blocks 11 through the side of the square shaft section. The outer side of the wedge block 11 cooperates with the inner cavity of the base body 1, and the wedge is fixed to the outer surface of the wedge block 11 through the anti-torsion limiter. The torque on the block 11 is transmitted to the milling wheel. The outer edge of the inner cavity of the base 1, that is, the end face, is provided with a step. The end cover 6 is placed on the step and is fixed to the drive shaft 4 through a fastener. Specifically, the end cover 6 is placed on the step of the outer edge of the inner cavity of the roller. The axial bolt 7 is used to connect the end cover 6 and the drive shaft 4. The end face of the square shaft section 4-1 of the drive shaft 4 is provided with a number of threaded holes. The axial bolt 7 is screwed into the number of threaded holes to fix the end cover 6 on the drive shaft 4 to prevent the milling wheel from axially disengaging. The end cover 6 is also provided with a pre-tightening bolt 8 ( Figure 5 、 Figure 6 and Figure 7 ).

[0039] In this embodiment, the quick-insertion tenon on the tooth seat 2 and the insertion groove 1-1-1 on the boss 1-1 both adopt a dovetail-type inclined surface with a width in front and a narrowness in the back. Specifically, the boss is provided with a recessed groove with a width in front and a narrowness in the back, and a protrusion with a width in front and a narrowness in the back extends from the bottom surface of the tooth seat. A tooth seat fixing bolt 3 is also passed through between the tooth seat 2 and the boss 1-1 to prevent the pick assembly from being reversed and dislodged. The insertion groove is provided with a fixing bolt hole 1-1-2 ( Figure 2 and Figure 3 ).

[0040] Specifically, such as Figure 4 As shown, the spatial positioning parameters and slope of the bottom surface of each insertion groove 1-1-1 are converted through the positioning parameters of the tooth seat 2, and form an angle δ with the elevation positioning surface of the pick 9. The angle δ can be adjusted according to the spatial position of the tooth seat 2 before the spiral line, or it can be removed in sequence from the last tooth seat 2 of the spiral line. The base 1 of the boss 1-1 with the insertion groove 1-1-1 can be realized by casting or machining. When the tooth seat 2 is damaged, the tooth seat fixing bolt 3 is removed, the tooth seat 2 is taken out, and the tooth seat 2 is replaced.

[0041] In this embodiment, a cylindrical step is provided below the square shaft section 4-1, and each wedge block 11 is provided in the space enclosed by the cylindrical step and the square shaft section 4-1. There is a certain gap between adjacent wedge blocks 11 to ensure that the inner side surface of the wedge block 11 is completely fitted with the surface of the square shaft section 4-1 of the drive shaft 4 and to compensate for the change in the relative position of each block after the wedge block 11 is adjusted.

[0042] In this embodiment, Figure 8 As shown, the wedge block 11 is arranged in an arc shape and includes an inner side surface 11-1 of the wedge block, an outer side surface 11-5 of the wedge block, a left side 11-3 of the wedge block and a right side of the wedge block. The inner side surface 11-1 of the wedge block is a plane that fits the side of the square axis, the outer side surface 11-5 of the wedge block is a conical surface with an inclined angle, and the left side 11-3 and the right side of the wedge block are upward inclined planes that are mirror-imaged.

[0043] In this embodiment, Figure 2 and Figure 8 As shown, the anti-torsion limiter includes a columnar pin 5, and the inner cavity of the roller is provided with an inner conical surface 1-3 with the same angle as the outer side surface 11-5 of the wedge block near the driving shaft 4. The middle part of the outer side surface 11-5 of the wedge block and the inner conical surface 1-3 at the middle part of the outer side surface 11-5 of the corresponding wedge block are both provided with semicircular holes along the cone slope. The columnar pin 5 is inserted into the complete cylindrical hole composed of two semicircular holes to prevent the relative rotation of the wedge block 11 and the base 1.

[0044] Specifically, the outer side surface 11-5 of the wedge block is a tapered surface with an inclined angle. A first semicircular hole 11-4 is located in the middle of the outer side surface 11-5, along the tapered slope. An inner conical surface 1-3, with the same angle as the outer side surface 11-5, is located near the drive shaft 4 within the inner cavity of the base 1. The inner conical surface 1-3 corresponds to a second semicircular hole 1-2 located in the middle of the outer side surface 11-5, along the tapered slope. A cylindrical pin 5 is inserted into the cylindrical hole formed by the outer side surface 11-5 and the inner conical surface 1-3 of the base 1, preventing relative rotation between the base and the uniformly distributed wedge blocks. Each wedge block 11 can be adjusted left and right around the cylindrical pin 5 to adapt to the contact surface of the drive shaft 4 and compensate for geometric and positional tolerances between the various contact surfaces of the drive shaft.

[0045] In this embodiment, the wedge block 11 is provided with a pre-tightening threaded hole 11-2 that cooperates with the pre-tightening bolt 8. The axial tightening force of the wedge block 11 is adjusted by screwing the pre-tightening bolt 8 into the depth. The pre-tightening bolt 8 connects the end cover 6 and the wedge block 11. By rotating the pre-tightening bolt 8, the length of the thread and the pre-tightening threaded hole on the wedge block is increased, and the axial movement of the wedge block 11 is achieved, thereby changing the tightening force of the wedge block 11 on the side of the square shaft section 4-1 of the drive shaft 4, eliminating the gap between the wedge block 11 and the side of the square shaft section 4-1 of the drive shaft 4 ( Figure 8 ).

[0046] Specifically, when a gap appears on the contact surface between the wedge block and the square shaft during assembly or after extended operation, the pre-tightening bolt 8 is tightened, allowing the wedge block 11 to move axially along the base 1 and also to fine-tune its rotation around the axis of the cylindrical pin 5. By adjusting the axial position of the wedge block 11 to compress and adapt to the outer surface shape of the square shaft segment 4-1, the contact surface between the wedge block 11 and the square shaft segment 4-1 is compressed, eliminating the gap and preventing impact damage to the contact surface between the wedge block and the square shaft segment. During the pre-tightening process, each wedge block 11 moves toward the inner cavity of the base 1, adjusting its axial position based on the different gaps between the four wedge blocks 11 and the square shaft segment 4-1, ultimately achieving a tight fit.

[0047] Example 3

[0048] An embodiment of the present invention provides a milling excavator, comprising the milling wheel assembly assembly described in Example 1 or Example 2.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention using the above technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes, and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the present technical solution.

Claims

1. A milling wheel assembly, characterized in that: It includes a base, a pick assembly and a torque transmission structure. The outer surface of the base is spirally distributed with multiple bosses with insertion grooves. The pick assembly includes a tooth seat and a pick installed in the tooth seat seat hole. The bottom of the tooth seat is provided with a quick-insert tenon that cooperates with the insertion groove through an inclined surface to form a self-locking structure to offset the tangential force, radial force and axial force during cutting. The torque transmission mechanism includes a drive shaft and wedge blocks that are respectively provided on each side of the square shaft section of the drive shaft and fit therewith. The outer side surface of each wedge block cooperates with the curved surface of the inner cavity of the base, and an anti-torsion limiter is provided between the mating surfaces. The outer edge of the inner cavity of the base is provided with a step. The end cover is placed on the step and fixed to the drive shaft through a fastener. The end cover is also provided with a pre-tightening bolt for adjusting the axial position of the wedge block.

2. The milling wheel assembly according to claim 1, characterized in that: The quick-insert tenon on the tooth seat and the insertion groove on the boss both adopt a dovetail-type inclined surface that is wide in the front and narrow in the back. A tooth seat fixing bolt is also passed through the tooth seat and the boss to prevent the pick assembly from reversing and falling out. The insertion groove is provided with a fixing bolt hole corresponding to the tooth seat fixing bolt.

3. The milling wheel assembly according to claim 1, characterized in that: A cylindrical step is provided below the square shaft section, and each wedge block is provided in a space enclosed by the cylindrical step and the square shaft section, with an adjustment gap provided between adjacent wedge blocks.

4. The milling wheel assembly according to claim 3, characterized in that: The wedge block is arranged in an arc shape and includes an inner side surface of the wedge block, an outer side surface of the wedge block, a left side of the wedge block and a right side of the wedge block. The inner side surface of the wedge block is a plane that fits the side surface of the square shaft, the outer side surface of the wedge block is a conical surface with an inclined angle, and the left side and the right side of the wedge block are upwardly inclined planes that are mirror-set.

5. The milling wheel assembly according to claim 4, characterized in that: The anti-torsion limiter includes a cylindrical pin, and the inner cavity of the roller is provided with an inner conical surface with the same angle as the outer side surface of the wedge block near the driving shaft side. The middle of the outer side surface of the wedge block and the inner conical surface at the middle of the outer side surface of the corresponding wedge block are both provided with semicircular holes along the cone slope. The cylindrical pin is inserted into the complete cylindrical hole composed of two semicircular holes to prevent the relative rotation of the wedge block and the base.

6. The milling wheel assembly according to claim 1, characterized in that: The wedge block is provided with a pre-tightening threaded hole matched with a pre-tightening bolt, and the axial pressing force of the wedge block is adjusted by the screwing depth of the pre-tightening bolt.

7. The milling wheel assembly according to claim 1, characterized in that: The end cover is screwed into a plurality of threaded holes on the end surface of the square shaft section of the drive shaft through axial bolts and is fixedly connected to the drive shaft.

8. The milling wheel assembly according to claim 1, wherein: The pick is limited in the seat hole of the tooth seat by a retaining spring.

9. A milling machine, characterized in that: The invention comprises a milling wheel assembly component according to any one of claims 1 to 8.

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