Multifunctional cutting pick taking-out tool

Abstract

The invention provides a multifunctional cutting tooth taking-out tool. The multifunctional cutting tooth taking-out tool comprises a guide rod, a stop block, a sliding hammer, a tooth pulling clamping piece and a first tooth disassembling rod. The stop block is fixedly connected to the position, close to the second end, of the guide rod. The sliding hammer is matched with the guide rod in a sliding manner along the length direction of the guide rod and is used for impacting the stop block; the tooth pulling clamping piece is fixedly connected to the first end of the guide rod and provided with an arc-shaped groove used for half surrounding the cutting tooth, and a clamping strip matched with a groove in the side face of the cutting tooth is arranged on the inner side of the arc-shaped groove. One end of the first tooth dismounting rod is fixedly connected to the second end of the guide rod, and the other end is used for dismounting the cutting tooth through a reserved through hole of the tooth sleeve. According to the multifunctional cutting pick taking-out tool, only one person is needed to operate and use, the cutting pick can be detached by selecting the first pick detaching rod or the pick pulling clamping piece, and safety is higher.

Description

Technical Field

[0001] This invention relates to the field of cutting tool replacement technology, and in particular to a multifunctional cutting tool removal tool. Background Technology

[0002] Cutting teeth are wear-resistant cutting tools installed on equipment such as tunneling machines, coal mining machines, and rotary drilling rigs. They are widely used in mining, tunnel engineering, and construction. Their working environment involves high impact, high wear, corrosion, and high temperatures, so they need to be replaced frequently.

[0003] The cutting tooth is installed on the tooth sleeve of the drill bit. Removing the cutting tooth generally requires two tools: a chisel and a hammer, and is operated by two people. One person holds the chisel while the other uses the hammer to strike the chisel, thereby "pushing" the cutting tooth out of the tooth sleeve. This method is labor-intensive and poses safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional tool for removing cutting teeth, thereby solving the aforementioned technical problems in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a multifunctional tool for removing cutting teeth, characterized in that it comprises: A guide rod having a first end and a second end; A stop block, which is fixedly connected to the guide rod; A sliding hammer, which is slidably fitted onto the guide rod along the length of the guide rod, is used to impact the stop block along the direction from the first end to the second end of the guide rod; A tooth extraction clamp is fixedly connected to the first end of the guide rod. It is provided with an arc-shaped groove for partially surrounding the cutting tooth, and a locking strip adapted to the groove on the side of the cutting tooth is provided on the inner side of the arc-shaped groove. The first tooth-removing rod has one end fixedly connected to the second end of the guide rod, and the other end is used to remove the cutting tooth through the reserved through hole of the tooth sleeve.

[0006] In one embodiment of the present invention, the first tooth-removing rod and the guide rod are coaxially arranged.

[0007] In one embodiment of the present invention, a second tooth-removing rod is further included, which is fixedly connected to the second end of the guide rod and forms an angle with the first tooth-removing rod. One end of the second tooth-removing rod is provided with a hammering part, and the other end is used to remove the cutting tooth through the reserved through hole of the tooth sleeve.

[0008] In one embodiment of the present invention, the first tooth-removing rod and the second tooth-removing rod are arranged perpendicular to each other.

[0009] In one embodiment of the present invention, the first tooth-removing rod and the second tooth-removing rod are welded to the second end of the guide rod.

[0010] In one embodiment of the present invention, the tooth extraction clip is welded to the first end of the guide rod.

[0011] In one embodiment of the present invention, the sliding hammer is provided with a through hole in the middle for inserting the guide rod, and the end of the sliding hammer used to impact the stop block is provided with a planar structure. The stop block is circumferentially surrounded by the guide rod, and the end of the stop block that is used to withstand the impact of the sliding hammer is configured as a planar structure.

[0012] In one embodiment of the present invention, the tooth extraction clamp includes a base and an arc-shaped plate. The base is fixedly connected to the first end of the guide rod. The arc-shaped groove is formed on the inner side of the arc-shaped plate. The clamping strip extends circumferentially on the inner surface of the arc-shaped plate.

[0013] In one embodiment of the present invention, the arc plate is a semi-circular arc structure.

[0014] In one embodiment of the present invention, the locking strip is disposed at one end of the arc-shaped plate away from the base, and the middle of the base is configured with a concave structure for limiting the tip of the cutting tooth head.

[0015] At least one beneficial effect of the present invention is: The multi-functional cutting tooth removal tool includes a guide rod, a stop block fixedly connected to the guide rod, a sliding hammer slidably fitted to the guide rod and used to impact the stop block, a tooth-pulling clip fixedly connected to the first end of the guide rod, and a first tooth-removing rod fixedly connected to the second end of the guide rod. The first tooth-removing rod is used to remove the cutting tooth through the reserved through hole of the tooth sleeve. The tooth-pulling clip is provided with an arc-shaped groove that semi-encloses the cutting tooth and a locking strip that matches the groove on the side of the cutting tooth. This tool only requires one person to operate and can be used to remove the cutting tooth by either the first tooth-removing rod or the tooth-pulling clip, depending on the actual installation of the cutting tooth. During operation, the sliding hammer is held to impact the stop block, which improves accuracy and safety.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 This is a background technical diagram; Figure 2This is a schematic diagram of the overall structure of an embodiment of the multifunctional cutting tooth removal tool provided by the present invention; Figure 3 yes Figure 2 A diagram from another angle; Figure 4 This is a schematic diagram of the tooth extraction clamp of an embodiment of the multifunctional tooth extraction tool provided by the present invention; Figure 5 This is a cross-sectional view of the tooth extraction clip and the cutting tooth in an embodiment of the multifunctional cutting tooth extraction tool provided by the present invention.

[0019] The reference numerals and their corresponding component names in the figure are as follows: 1. Cutting teeth; 11. Grooves; 2. Gear sleeve; 21. Pre-drilled through hole; 3. Guide rod; 31. First end; 32. Second end; 4. Stop block; 5. Slip hammer; 51. Through hole; 52. Anti-slip structure; 6. Tooth extraction clamp; 61. Arc groove; 62. Clamping strip; 63. Base; 64. Arc plate; 65. Concave structure; 7. First toothed rod; 8. Second toothed rod; 81. Hammering part. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0022] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0023] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0024] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0025] In this document, unless otherwise stated, "multiple" means two or more.

[0026] In this document, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.

[0027] Examples of various specific processes and materials are provided in this document, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0028] The cutting tooth 1 has a head and a tail. The head is used for cutting operations, and the tail is used for fixed installation by embedding it into the tooth sleeve 2 of the drill bit. The cutting tooth 1 has an annular groove 11 near the head, and the groove 11 surrounds the axis of the cutting tooth 1. The tooth sleeve 2 has a reserved through hole 21 for removing the cutting tooth 1.

[0029] During use, the head of the cutting tooth 1 is prone to wear due to continuous impact and friction. When it is worn to a certain extent or damaged, it needs to be removed from the tooth sleeve 2 for replacement.

[0030] like Figures 1 to 5 As shown, the present invention provides a multifunctional tooth removal tool, including a guide rod 3, a stop block 4, a sliding hammer 5, a tooth removal clip 6, and a first tooth removal rod 7.

[0031] The guide rod 3 has a first end 31 and a second end 32.

[0032] The stop block 4 is fixedly connected to the guide rod 3.

[0033] The sliding hammer 5 is slidably fitted onto the guide rod 3 along its length, and is used to impact the stop block 4 from the first end 31 to the second end 32 of the guide rod 3. The sliding hammer 5 is relatively close to the first end 31 of the guide rod 3, and the stop block 4 is relatively close to the second end 32 of the guide rod 3.

[0034] The tooth extraction clip 6 is fixedly connected to the first end 31 of the guide rod 3. It is provided with an arc-shaped groove 61 for semi-enclosing the cutting tooth 1. A clip 62 is provided on the inner side of the arc-shaped groove 61. The clip 62 is adapted to the groove 11 on the side of the cutting tooth 1.

[0035] One end of the first tooth-removing rod 7 is fixedly connected to the second end 32 of the guide rod 3, and the other end is used to remove the cutting tooth 1 through the reserved through hole 21 of the tooth sleeve 2.

[0036] The dimensions of the arc groove 61 and the clip 62 of the tooth extraction clip 6 can be designed according to the specifications of the cutting tooth 1 to ensure that the tooth extraction clip 6 can cooperate with the cutting tooth 1.

[0037] The length and diameter of the first tooth-removing rod 7 can be designed according to the size of the reserved through hole 21 of the actual tooth sleeve 2, so as to ensure that it can pass smoothly through the reserved through hole 21 and apply an effective pushing force to the tail of the cutting tooth 1.

[0038] The multi-functional tooth removal tool allows for the removal of tooth 1 by a single operator. Furthermore, it offers two options for removing tooth 1: using the tooth-pulling clip 6 or the first tooth-removing lever 7.

[0039] When using the tooth-pulling clip 6, ensure the guide rod 3 is parallel to the axis of the cutting tooth 1. Place the cutting tooth 1 into the arc-shaped groove 61 of the tooth-pulling clip 6, allowing the locking strip 62 to engage with the groove 11 on the side of the cutting tooth 1. Then, hold the sliding hammer 5 and strike the stop block 4 along the guide rod 3. The impact force is transmitted to the cutting tooth 1 through the guide rod 3 and the tooth-pulling clip 6, generating an axial pulling force that can pull the cutting tooth 1 outward from the tooth sleeve 2. The tooth-pulling clip 6 partially surrounds the cutting tooth 1, supporting it and reducing the risk of it falling after being pulled out.

[0040] When using the first tooth-removing rod 7, insert it into the pre-drilled through hole 21 of the tooth sleeve 2. Then, hold the sliding hammer 5 and strike the stop block 4 along the guide rod 3. The impact force is transmitted to the cutting tooth 1 through the guide rod 3 and the first tooth-removing rod 7, "punching" the cutting tooth 1 out of the tooth sleeve 2. This method is suitable for scenarios where the cutting tooth 1 and the tooth sleeve 2 are tightly locked together or where the pre-drilled through hole 21 is conveniently located for operation.

[0041] The two disassembly methods can be flexibly selected according to the actual installation of the cutting teeth, which effectively improves the convenience and efficiency of cutting tooth replacement and reduces labor costs.

[0042] Furthermore, the sliding hammer 5 slides more smoothly under the guidance of the guide rod 3, avoiding the problem of traditional hammers easily deviating from the target and causing injury, thus improving the safety and accuracy of operation.

[0043] In some implementations, such as Figure 2 and Figure 3 As shown, the first tooth-removing rod 7 and the guide rod 3 are coaxially arranged. This arrangement allows the impact force transmitted by the first tooth-removing rod 7 to act directly on the cutting tooth 1 along the axial direction of the guide rod 3, reducing force dispersion and further improving the energy utilization rate during impact disassembly, ensuring that the cutting tooth 1 can stably disengage from the tooth sleeve 2 along the axial direction when subjected to impact.

[0044] In some implementations, such as Figure 2 and Figure 3 As shown, the multi-functional cutting tooth removal tool also includes a second tooth-removing rod 8. The second tooth-removing rod 8 is fixedly connected to the second end 32 of the guide rod 3 and forms an angle with the first tooth-removing rod 7. One end of the second tooth-removing rod 8 is provided with a hammering part 81, and the other end is used to remove the cutting tooth 1 through the reserved through hole 21 of the tooth sleeve 2.

[0045] If the cutting tooth 1 and the tooth sleeve 2 are tightly clamped, the impact force of the sliding hammer 5 is insufficient to remove the cutting tooth 1 smoothly when using the tooth extraction clip 6 or the first tooth removal rod 7. In this case, the second tooth removal rod 8 can be used to assist in the operation.

[0046] Specifically, the end of the second tooth-removing rod 8 without the hammering part 81 is inserted into the reserved through hole 21 of the tooth sleeve 2, and then the hammering part 81 is struck with a hammer or the like. The impact force is transmitted to the cutting tooth 1 through the second tooth-removing rod 8, so as to achieve further impact disassembly of the cutting tooth 1.

[0047] The length of the second toothed rod 8 is less than the total length of the guide rod 3 and the first toothed rod 7. The second toothed rod 8 forms an angle with the first toothed rod 7, which can adapt to the reserved through holes 21 at different positions and angles. Especially when the first toothed rod 7 is difficult to operate due to space limitations, the second toothed rod 8 can provide an additional disassembly method, enhancing the adaptability and practicality of the tool.

[0048] The striking part 81 can be configured as an enlarged end and have a flat surface to increase the contact area with the hammer. When the hammer strikes the striking part 81, it is less likely to deviate from the target.

[0049] The length and diameter of the second tooth-removing rod 8, used to remove one end of the cutting tooth 1, can be designed according to the size of the reserved through hole 21 of the tooth sleeve 2 to ensure that it can be smoothly inserted and effectively transmit impact force to the tail of the cutting tooth 1.

[0050] The second toothed lever 8 can also be used as a handle. During operation, the user can hold the second toothed lever 8 with one hand to stabilize the tool as a whole, and use the other hand to hold the sliding hammer 5 to impact the stop block 4, which helps to improve the stability and convenience of operation.

[0051] A certain distance needs to be left between the second toothed rod 8 and the stop block 4 so that the user is not easily injured by the sliding hammer 5 when holding the second toothed rod 8, thus ensuring operational safety.

[0052] The multi-functional cutting tooth removal tool integrates three functions for removing cutting teeth 1: cutting tooth 1 through tooth removal clip 6, first tooth removal rod 7, or second tooth removal rod 8. It can meet the cutting tooth removal needs under different working conditions and reduce the number of tools to carry.

[0053] In some implementations, such as Figure 2 and Figure 3 As shown, the first tooth-removing rod 7 and the second tooth-removing rod 8 are arranged perpendicularly to each other, forming a "T" shaped structure.

[0054] To ensure the structural strength of the tool, the guide rod 3, stop block 4, sliding hammer 5, tooth extraction clip 6, first tooth extraction rod 7 and second tooth extraction rod 8 can all be made of metal materials, such as high-strength alloy steel. This material has high hardness, toughness and wear resistance, and can withstand greater impact and friction, ensuring the structural stability and service life of the tool during long-term use.

[0055] Guide rod 3, stop block 4, tooth extraction clip 6, first tooth removal rod 7 and second tooth removal rod 8 can be integrally formed by welding or forging processes to further improve the overall structural strength and connection stability, and avoid the loosening or breakage of parts during impact operations.

[0056] Of course, guide rod 3, stop block 4, tooth extraction clip 6, first tooth extraction rod 7, and second tooth extraction rod 8 can also be fixedly connected by conventional detachable methods such as threaded connection, plug-in connection, and bolt connection. When a component is worn or damaged, the detachable connection facilitates individual replacement and reduces maintenance costs.

[0057] As the main force-bearing and guiding component, the guide rod 3 can be smoothed to reduce the frictional resistance when the slide hammer 5 slides, making the slide hammer 5 slide more smoothly, thereby ensuring that the impact force can be effectively transmitted.

[0058] In some embodiments, the tooth extraction clip 6 is welded to the first end 31 of the guide rod 3.

[0059] In some embodiments, the first tooth-removing rod 7 and the second tooth-removing rod 8 are welded to the second end 32 of the guide rod 3.

[0060] In some implementations, such as Figure 2 and Figure 3 As shown, the sliding hammer 5 has a through hole 51 in the middle for the guide rod 3 to pass through, and one end of the sliding hammer 5 used to impact the stop block 4 is a planar structure. The stop block 4 is circumferentially surrounded by the guide rod 3, and the end of the stop block 4 used to withstand the impact of the sliding hammer 5 is a planar structure.

[0061] Specifically, the planar structures of both the sliding hammer 5 and the stop block 4 are perpendicular to the axis of the guide rod 3. The impact force of the sliding hammer 5 can be evenly transmitted to the stop block 4 through the planar structures, avoiding excessive local stress that could damage the components, while also ensuring the stability of the impact process.

[0062] In some implementations, such as Figure 3 As shown, an anti-slip structure 52 can be provided on the outer surface of the slide hammer 5 to increase the friction between the hand and the slide hammer 5, prevent slippage during operation, and improve operational safety. The anti-slip structure 52 can be a textured structure or a rubber sleeve.

[0063] In some implementations, such as Figure 4 As shown, the tooth extraction clamp 6 is an integral structure, including a base 63 and an arc-shaped plate 64.

[0064] The base 63 is fixedly connected to the first end 31 of the guide rod 3, and the first end 31 of the guide rod 3 is fixedly connected to the middle position of the base 63. An arc-shaped groove 61 is formed on the inner side of the arc-shaped plate 64, and the retaining strip 62 extends circumferentially on the inner surface of the arc-shaped plate 64. When engaged with the cutting tooth 1, the tip of the cutting tooth 1 faces the base 63, and the arc-shaped plate 64 is located on the side of the cutting tooth 1.

[0065] The clip 62, base 63 and arc plate 64 are integrally formed, resulting in high overall structural strength and making them less prone to breakage when subjected to impact.

[0066] The shape and position of the locking strip 62 are precisely designed according to the size of the groove 11 on the side of the cutting tooth 1 to ensure that the locking strip 62 can be firmly locked into the groove 11 and prevent slippage during the removal of the cutting tooth 1.

[0067] In one example, such as Figure 1 and Figure 4 As shown, the inner surface of the groove 11 of the cutting tooth 1 is an arc-shaped structure, and the locking strip 62 is set as an arc-shaped protrusion that matches the inner surface of the groove 11, so as to increase the contact area between the locking strip 62 and the groove 11 and improve the stability of the locking.

[0068] In some implementations, such as Figure 4 As shown, the arc plate 64 has a semi-circular arc structure, which forms a semi-enclosed support for the cutting tooth 1, and can be fastened to the cutting tooth 1 from the side. At the same time, it provides sufficient space for observing the cooperation between the cutting tooth 1 and the locking strip 62 during operation, which facilitates quick adjustment of the locking position and ensures that the locking strip 62 is accurately embedded in the groove 11.

[0069] In some implementations, such as Figure 4 and Figure 5 As shown, the retaining strip 62 is located at the end of the arc-shaped plate 64 away from the base 63 to prevent interference between the arc-shaped plate 64 and the toothed sleeve 2 during operation. The middle of the base 63 is provided with a concave structure 65 for limiting the tip of the cutting tooth 1.

[0070] Specifically, the distance from the connection between the arc plate 64 and the base 63 to the locking strip 62 is less than the distance from the groove 11 to the tip of the cutting tooth 1. When the tooth-pulling clip 6 is engaged with the cutting tooth 1, the tip of the cutting tooth 1 extends into the concave structure 65 of the base 63, and there is a certain space between the head of the cutting tooth 1 and the inner wall of the arc plate 64 and the inner wall of the base 63.

[0071] The arc-shaped groove 61 combined with the concave structure 65 can better surround and limit the head of the cutting tooth 1, playing a certain limiting role in the head of the cutting tooth 1. The cutting tooth 1 is less likely to fall or fly out the moment it is separated from the tooth sleeve 2, further improving the safety during operation. At the same time, the design of the concave structure 65 also makes the tooth extraction clip 6 more compact, which helps to reduce its size and weight.

[0072] When using the tooth extraction clamp 6, the operator stands to one side of the tool, fastens the tooth extraction clamp 6 onto the head of the cutting tooth 1, and faces the arc plate 64 toward himself, which can effectively ensure personnel safety.

[0073] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims

1. A multifunctional tool for removing cutting teeth, characterized in that, include: A guide rod having a first end and a second end; A stop block, which is fixedly connected to the guide rod; A sliding hammer, which is slidably fitted onto the guide rod along the length of the guide rod, is used to impact the stop block along the direction from the first end to the second end of the guide rod; A tooth extraction clamp is fixedly connected to the first end of the guide rod. It is provided with an arc-shaped groove for partially surrounding the cutting tooth, and a locking strip adapted to the groove on the side of the cutting tooth is provided on the inner side of the arc-shaped groove. The first tooth-removing rod has one end fixedly connected to the second end of the guide rod, and the other end is used to remove the cutting tooth through the reserved through hole of the tooth sleeve.

2. The multifunctional cutting tooth removal tool according to claim 1, characterized in that, The first tooth-removing rod and the guide rod are coaxially arranged.

3. The multifunctional cutting tooth removal tool according to claim 1, characterized in that, It also includes a second tooth-removing rod, which is fixedly connected to the second end of the guide rod and forms an angle with the first tooth-removing rod. One end of the second tooth-removing rod is provided with a hammering part, and the other end is used to remove the cutting tooth through the reserved through hole of the tooth sleeve.

4. The multifunctional cutting tooth removal tool according to claim 3, characterized in that, The first tooth-removing rod and the second tooth-removing rod are arranged perpendicular to each other.

5. The multifunctional cutting tooth removal tool according to claim 3, characterized in that, The first tooth-removing rod and the second tooth-removing rod are welded to the second end of the guide rod.

6. The multifunctional cutting tooth removal tool according to claim 1, characterized in that, The tooth extraction clip is welded to the first end of the guide rod.

7. The multifunctional cutting tooth removal tool according to claim 1, characterized in that, The sliding hammer has a through hole in the middle for the guide rod to pass through, and the end of the sliding hammer used to impact the stop block is set as a planar structure. The stop block is circumferentially surrounded by the guide rod, and the end of the stop block that is used to withstand the impact of the sliding hammer is configured as a planar structure.

8. The multifunctional cutting tooth removal tool according to any one of claims 1 to 7, characterized in that, The tooth extraction clamp includes a base and an arc-shaped plate. The base is fixedly connected to the first end of the guide rod. An arc-shaped groove is formed on the inner side of the arc-shaped plate. The clamping strip extends circumferentially on the inner surface of the arc-shaped plate.

9. The multifunctional cutting tooth removal tool according to claim 8, characterized in that, The arc-shaped plate has a semi-circular arc structure.

10. The multifunctional cutting tooth removal tool according to claim 8, characterized in that, The locking strip is located at the end of the arc-shaped plate away from the base, and the middle of the base is configured with a concave structure for limiting the tip of the cutting tooth head.

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