Milling cutter head convenient to maintain

Abstract

The utility model discloses a milling cutter head convenient to maintain, and relates to the technical field of road maintenance. The cutter comprises a base, a cutter body and a cutter point head, through holes are symmetrically formed in the base, a limiting plate is arranged at one end in each through hole, a push rod is inserted into each limiting plate in a penetrating mode, a second spring is arranged on one side face of each limiting plate, a push plate is arranged on one end face of each push rod, and each push rod is inserted into the corresponding second spring in a penetrating mode. The free end of the second spring is fixedly connected with the push plate, a baffle ring is arranged on the peripheral side face of the base, and a fixing ring is arranged on the peripheral side face of the cutter body. The tool bit is placed in the notch in one end face of the tool body, the shape and the size of the threaded opening are matched with those of the fixing block, when the tool body rotates by 90 degrees anticlockwise and the position of the threaded opening is rotationally opposite to the threaded hole, the screw pin is placed in the threaded opening, and after threaded connection, the tool bit can be fixed and prevented from rotating. The tool bit is detachably connected with the tool body, so that the tool bit or the tool body can be replaced independently.

Description

Technical Field

[0001] The utility model belongs to the technical field of road maintenance, in particular to a milling cutter head which is easy to maintain. Background Art

[0002] Road milling machine is one of the main types of asphalt pavement maintenance and construction machinery. It is mainly used for excavation and renovation of asphalt concrete surface layers in highways, urban roads, airports, freight yards, etc. It can also be used to remove road bumps, oil waves, reticulation, rutting and other defects. Milling cutters, also known as milling machine heads or road planing teeth, are important parts of road milling machines. Usually, multiple milling cutters can be used together to cut road materials.

[0003] The cutter head and cutter body of existing milling tools are mostly connected as one by welding. When planing roads, the cutter tip is easily damaged, which affects the work of the cutter head, causes the milling teeth to lose their function, and causes waste. In addition, when working on some roads that require deep milling, due to the different hardness of the cutter head and the cutter body, the surface of the cutter body is easily worn, resulting in the cutter head being usable but the cutter body being scrapped. Since the cutter head and the cutter body have been welded as one, the cutter head is also scrapped, thereby increasing the cost of use. Therefore, a milling cutter head that is easy to maintain is proposed. Summary of the invention

[0004] The utility model aims to provide a milling cutter head which is easy to maintain and solve the existing problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a milling cutter head which is easy to maintain, comprising a base, a cutter body and a cutter tip head, the base is symmetrically provided with a through hole, one end of the through hole is provided with a limit plate, the limit plate is interspersed with a push rod, a side surface of the limit plate is provided with a second spring, an end surface of the push rod is provided with a push plate, the push rod is interspersed with the second spring, the free end of the second spring is fixedly connected with the push plate, a retaining ring is provided on the peripheral side surface of the base, a fixing ring is provided on the peripheral side surface of the cutter body, a circular hole is symmetrically provided in the cutter body, a first spring is provided at the bottom of the circular hole, a limit block is provided at the other end of the first spring, the shape and size of the limit block are adapted to the circular hole, a notch is provided on one end surface of the cutter body, a fixing block is provided in the notch, an overflow groove is provided on the peripheral side surface of one end of the cutter body, a threaded hole is provided on the peripheral side surface of the cutter body, a clamping groove is provided on the bottom surface of the cutter tip head, a guide groove is provided on the peripheral side surface of the cutter tip head, a threaded opening is provided on the peripheral side surface of the cutter tip head, and a screw pin is threadedly connected to the threaded opening.

[0007] The knife body is plugged into the base, the shape and size of the circular hole are adapted to the through hole, the shape and size of the limiting block are adapted to the through hole, and the knife body is snap-fitted with the base.

[0008] The knife body is snap-connected with the knife tip, the shape and size of the guide groove are adapted to the overflow groove, the position of the guide groove is adapted to the overflow groove, the shape and size of the threaded opening are adapted to the threaded hole, and the position of the threaded opening is adapted to the threaded hole.

[0009] The tool tip is placed in a notch on one end face of the tool body, the shape and size of the threaded opening are adapted to the fixed block, the tool body is rotated 90 degrees counterclockwise, the position of the threaded opening is rotated to adapt to the threaded hole, and the screw pin is threadedly connected to the threaded opening.

[0010] The material of the tool tip and the tool body is any one of tungsten carbide alloy, high speed steel and alloy steel.

[0011] The utility model has the following beneficial effects:

[0012] The utility model places the cutter head in the notch on one end face of the cutter body, and the shape and size of the threaded opening are adapted to the fixing block. When the cutter body is rotated 90 degrees counterclockwise and the threaded opening is rotated to be opposite to the threaded hole, the screw pin is put into the threaded opening, and after the threaded connection, it can be fixed to prevent rotation, effectively avoiding the situation that the cutter head can still be used but the cutter body is scrapped. The cutter head and the cutter body are detachably connected, which is convenient for replacing the cutter head or the cutter body separately. At the same time, an overflow groove and a guide groove are provided to disperse the impact during operation, further improving the service life of the milling cutter head. When repairing or replacing the cutter body, the screw rod is pressed to push the push plate to push the limit block into the circular hole, and the cutter body can be taken out after being pushed into the circular hole. The retaining ring can protect the screw rod from damage during operation, and the fixing ring can disperse a part of the downward force of the cutter body to prevent the cutter body from being deformed by force under long-term operation.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of a milling cutter head that is easy to maintain;

[0016] Figure 2 An exploded view of a milling cutter head for easy maintenance;

[0017] Figure 3 It is a picture of the tip of a knife;

[0018] Figure 4 for Figure 3 Sectional view of the AA section;

[0019] Figure 5 for Figure 3 Cross-section of the middle BB section;

[0020] Figure 6 It is a left side view of a milling cutter head which is easy to maintain;

[0021] Figure 7 for Figure 6 Cross-section of the CC section.

[0022] In the accompanying drawings, the list of parts represented by each number is as follows: 1. Base; 101. Block ring; 102. Through hole; 103. Push plate; 104. Second spring; 105. Limit plate; 106. Push rod; 2. Cutter body; 201. Overflow groove; 202. Threaded hole; 203. Fixed block; 204. Fixed ring; 205. Round hole; 206. First spring; 207. Limit block; 3. Cutter tip; 301. Guide groove; 302. Threaded mouth; 303. Slot; 4. Screw pin. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-Figure 7 As shown, the utility model is a milling cutter head that is easy to maintain, including a base 1, a cutter body 2 and a cutter tip 3. A through hole 102 is symmetrically opened in the base 1, a limit plate 105 is arranged at one end of the through hole 102, a push rod 106 is inserted into the limit plate 105, a second spring 104 is arranged on one side of the limit plate 105, a push plate 103 is arranged on one end face of the push rod 106, the push rod 106 is inserted into the second spring 104, and the free end of the second spring 104 is fixedly connected to the push plate 103, a retaining ring 101 is arranged on the side of the base 1, a fixing ring 204 is arranged on the side of the cutter body 2, and a second spring 104 is inserted into the second spring 104. The second spring 104 is fixedly connected to the push plate 103. A circular hole 205 is provided, a first spring 206 is provided at the bottom of the circular hole 205, a limit block 207 is provided at the other end of the first spring 206, and the shape and size of the limit block 207 are adapted to the circular hole 205. A notch is provided at one end face of the cutter body 2, a fixing block 203 is provided in the notch, an overflow groove 201 is provided at the peripheral side face of one end of the cutter body 2, a threaded hole 202 is provided at the peripheral side face of the cutter body 2, a clamping groove 303 is provided on the bottom surface of the cutter tip 3, a guide groove 301 is provided on the peripheral side face of the cutter tip 3, a threaded opening 302 is provided at the peripheral side face of the cutter tip 3, and a screw pin 4 is threadedly connected to the threaded opening 302.

[0027] Furthermore, the blade body 2 is plugged into the base 1 , the shape and size of the circular hole 205 are adapted to the through hole 102 , the shape and size of the limiting block 207 are adapted to the through hole 102 , and the blade body 2 is snap-fitted into the base 1 .

[0028] Furthermore, the blade body 2 is snap-connected with the blade tip 3 , the guide groove 301 is adapted in shape and size to the overflow groove 201 , the position of the guide groove 301 is adapted to the overflow groove 201 , the shape and size of the threaded opening 302 is adapted to the threaded hole 202 , and the position of the threaded opening 302 is adapted to the threaded hole 202 .

[0029] Furthermore, the blade tip 3 is placed in a groove on one end face of the blade body 2, the shape and size of the threaded opening 302 are adapted to the fixing block 203, the blade body 2 is rotated 90 degrees counterclockwise, the position of the threaded opening 302 is rotated to adapt to the threaded hole 202, and the screw pin 4 is threadedly connected to the threaded opening 302.

[0030] Furthermore, the material of the tool tip 3 and the tool body 2 is any one of tungsten carbide alloy, high speed steel and alloy steel.

[0031] It should be noted that the blade tip 3 is placed in the notch on one end face of the blade body 2, the shape and size of the threaded opening 302 are adapted to the fixing block 203, the blade body 2 is rotated 90 degrees counterclockwise, and when the threaded opening 302 is rotated to be opposite to the threaded hole 202, the screw pin 4 is placed in the threaded opening 302, and after the threaded connection, it can be fixed to prevent rotation, effectively avoiding the situation that the blade tip 3 can still be used while the blade body 2 is scrapped, and the blade tip 3 and the blade body 2 are detachably connected, which is convenient for the blade tip 3 or the blade body 2 to be replaced separately At the same time, an overflow groove 201 and a guide groove 301 are provided to disperse the impact during operation, further improving the service life of the milling cutter head; when repairing or replacing the cutter body 2, the push rod 106 is pressed to push the push plate 103 to push the limit block 207 into the circular hole 205. After pushing into the circular hole 205, the cutter body 2 can be taken out, and the retaining ring 101 can protect the push rod 106 from damage during operation, and the fixing ring 204 can disperse part of the downward force of the cutter body 2 to prevent the cutter body 2 from being deformed by force under long-term operation.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A milling cutter head that is easy to maintain, comprising a base (1), a cutter body (2) and a cutter tip (3), characterized in that: The base (1) is symmetrically provided with through holes (102), one end of the through hole (102) is provided with a limit plate (105), a push rod (106) is inserted into the limit plate (105), a second spring (104) is provided on one side of the limit plate (105), an end surface of the push rod (106) is provided with a push plate (103), the push rod (106) is inserted into the second spring (104), the free end of the second spring (104) is fixedly connected to the push plate (103), the base (1) is provided with a retaining ring (101) on the peripheral side surface, the knife body (2) is provided with a fixing ring (204), the knife body (2) is symmetrically provided with circular holes (205), the circular holes (205) A first spring (206) is arranged at the bottom, a limiting block (207) is arranged at the other end of the first spring (206), the shape and size of the limiting block (207) being adapted to the circular hole (205), a notch is arranged at one end surface of the blade body (2), a fixing block (203) is arranged in the notch, an overflow groove (201) is arranged at the peripheral side surface of one end of the blade body (2), a threaded hole (202) is arranged at the peripheral side surface of the blade body (2), a clamping groove (303) is arranged at the bottom surface of the blade tip (3), a guide groove (301) is arranged at the peripheral side surface of the blade tip (3), a threaded opening (302) is arranged at the peripheral side surface of the blade tip (3), and a screw pin (4) is threadedly connected to the threaded opening (302).

2. A milling cutter head that is easy to maintain according to claim 1, characterized in that: The blade body (2) is plugged into the base (1); the shape and size of the circular hole (205) are compatible with the through hole (102); the shape and size of the limit block (207) are compatible with the through hole (102); and the blade body (2) is snap-fitted into the base (1).

3. A milling cutter head that is easy to maintain according to claim 1, characterized in that: The blade body (2) is snap-connected to the blade tip (3); the shape and size of the guide groove (301) are compatible with the overflow groove (201); the position of the guide groove (301) is compatible with the overflow groove (201); the shape and size of the threaded opening (302) are compatible with the threaded hole (202); and the position of the threaded opening (302) is compatible with the threaded hole (202).

4. The milling cutter head easy to maintain according to claim 1, characterized in that: The blade tip (3) is placed in a groove on one end face of the blade body (2); the shape and size of the threaded opening (302) are adapted to the fixing block (203); the blade body (2) is rotated 90 degrees counterclockwise, the position of the threaded opening (302) is rotated to be adapted to the threaded hole (202), and the screw pin (4) is threadedly connected to the threaded opening (302).

5. The milling cutter head easy to maintain according to claim 1, characterized in that: The material of the tool tip (3) and the tool body (2) is any one of tungsten carbide alloy, high speed steel and alloy steel.

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