Transmission structure for trephine and trephine adopting transmission structure

Abstract

The utility model discloses a transmission structure for a trephine and the trephine adopting the transmission structure, the transmission structure comprises a circular ring saw blade and a driving wheel, the circular ring saw blade is installed and positioned on a cutting main body of the trephine; the circular ring saw blade is provided with a sawtooth component arranged along the outer periphery of the circular ring saw blade and used for cutting and a gear ring component arranged along the inner periphery of the circular ring saw blade and used for transmission. The driving wheel is installed and positioned on a cutting body of the trephine and comprises a wheel body and a plurality of driving tooth pieces arranged in the circumferential direction of the wheel body. The driving wheel is arranged along the inner circumferential side of the circular saw blade, the driving tooth piece is in meshing transmission connection with the gear ring component, and the driving wheel can be driven by a driving device of the trephine to rotate around the axis of the driving wheel relative to the cutting body and drive the circular saw blade to rotate around the axis of the circular saw blade relative to the cutting body for operation. The circular saw blade of the transmission structure is engaged with the driving wheel for transmission, so that the stability of the rotation operation of the circular saw blade can be improved.

Description

Technical Field

[0001] The utility model relates to the field of cutting devices, in particular to a transmission structure for a ring saw and a ring saw adopting the structure. Background Art

[0002] A ring saw is a cutting device mainly used for cutting walls, reinforced concrete, stone and other structures. It is widely used in wall sawing, demolition, decoration, construction and other fields.

[0003] Existing ring saws, such as a utility model patent with announcement number CN220992981U, include a saw blade guard, a circular saw blade with one end mounted and positioned in the saw blade guard, and a friction ring saw wheel for driving the circular saw blade to rotate. The friction ring saw wheel is connected to the output end of the drive motor and is interference-connected with the inner circumferential side wall of the circular saw blade. The friction ring saw wheel is driven to rotate by the drive motor, and the friction ring saw wheel rubs against the inner circumferential side wall of the circular saw blade to drive the circular saw blade to rotate. After such ring saws are used for a long time, the friction ring saw wheel is prone to slipping, resulting in poor stability and reliability of the transmission between the friction ring saw wheel and the circular saw blade, which is not conducive to the stable rotation of the circular saw blade. Summary of the Invention

[0004] The utility model aims at the deficiencies in the prior art and provides a transmission structure for a ring saw and a ring saw adopting the structure, which can improve the stability of the rotating operation of the circular ring saw blade.

[0005] The utility model provides a transmission structure for a ring saw, comprising a circular ring saw blade and a driving wheel, wherein the circular ring saw blade is mounted and positioned on the cutting body of the ring saw, and the circular ring saw blade has a saw tooth component for cutting arranged along its outer periphery, and a gear ring component for transmission arranged along its inner periphery; the driving wheel is mounted and positioned on the cutting body of the ring saw, and the driving wheel comprises a wheel body and a plurality of driving teeth arranged along the circumferential direction of the wheel body; the driving wheel is arranged along the inner circumference of the circular ring saw blade, and the driving teeth are meshed and connected with the gear ring component for transmission, and the driving wheel can rotate around the driving wheel axis relative to the cutting body under the drive of the driving device of the ring saw, and drive the circular ring saw blade to rotate around the circular ring saw blade axis relative to the cutting body.

[0006] Preferably, the circular saw blade includes a circular ring body, the serrated component includes a plurality of serrated portions protruding from the outer peripheral side wall of the circular ring body, the ring gear component includes a plurality of transmission tooth portions protruding from the inner peripheral side wall of the circular ring body, and the plurality of transmission tooth portions are arranged in a circle along the inner peripheral side wall of the circular ring body, and the circular ring body, the serrated component, and the ring gear component are arranged on the same plane.

[0007] Preferably, the driving tooth member is configured as a columnar structure arranged parallel to the axis of the driving wheel, and the wheel body is provided with a limiting groove recessed inward along the circumferential direction from its circumferential side wall for accommodating the inner periphery of the circular saw blade, and a first groove wall and a second groove wall are formed on both sides of the limiting groove, respectively. The two ends of the driving tooth member are connected to the first groove wall and the second groove wall, respectively, and two adjacent driving teeth are arranged at intervals to form an engagement channel for engaging with the transmission tooth portion for transmission connection.

[0008] Preferably, the transmission tooth portion extends from the outer peripheral side wall of the circular ring body toward the center of the circular ring saw blade, and the transmission tooth portion has a first meshing surface for abutting against the side surface of the driving tooth member to drive the circular ring saw blade to rotate. The vertical distance between the first meshing surface and a radial line of the circular ring saw blade passing through its transmission tooth portion gradually decreases from one end close to the circular ring body to the end close to the center of the circular ring saw blade.

[0009] Preferably, the transmission tooth portion also has a second meshing surface arranged opposite to the first meshing surface, and the vertical distance between the second meshing surface and a radial line of the circular saw blade passing through its transmission tooth portion gradually decreases from one end close to the circular ring body to the end close to the center of the circular saw blade.

[0010] Preferably, the first groove wall and the second groove wall are correspondingly provided with several groups of connecting channels for connecting the two ends of the driving tooth member, one end of the driving tooth member extends into the connecting channel of the first groove wall and is detachably connected to the first groove wall, and the other end extends into the corresponding connecting channel arranged on the second groove wall and is detachably connected to the second groove wall.

[0011] Preferably, a connecting portion coaxially arranged with the wheel body is provided in the middle of the wheel body, and the driving wheel can be connected to the driving device of the ring saw through the connecting portion and rotate around the driving wheel axis under the power of the driving device.

[0012] The utility model provides a ring saw, including a cutting body and the above-mentioned transmission structure, the cutting body includes a shell component, a driving device, and a positioning structure arranged on the shell component, one end of the circular ring saw blade is arranged in the shell component and installed and positioned on the positioning structure, and the driving wheel is installed and positioned at the output end of the driving device.

[0013] Preferably, the driving device includes a driving motor, a transmission housing installed on one side of the shell component, a transmission assembly installed in the transmission housing and connected to the output end of the driving motor, the driving wheel is installed and positioned at the output end of the transmission assembly, and the positioning structure includes at least two groups of positioning assemblies respectively arranged on both sides of the driving wheel.

[0014] Preferably, the positioning assembly includes two guide wheels arranged relatively on both sides of the circular saw blade, and two bases for mounting the two guide wheels respectively, the bases having mounting shafts for mounting the guide wheels; wherein at least one of the guide wheels includes a first wheel body coaxially arranged with the mounting shaft and rotatably mounted on the mounting shaft, and a second wheel body located on a side of the first wheel body away from the center of the circular saw blade, the circular saw blade is clamped and positioned between the two guide wheels and the side surface abuts against the first wheel body and the second wheel body, when the circular saw blade rotates, friction drives the two guide wheels to rotate, and the angular velocity of the second wheel body is greater than the angular velocity of the first wheel body; or,

[0015] The guide wheel is rotatably mounted on the mounting shaft along its axis, wherein at least one of the guide wheels is arranged at an angle to the plane where the circular saw blade is located, and includes a first wheel body that is coaxially arranged and moves synchronously and a second wheel body located on the side of the first wheel body away from the center of the circular saw blade, the outer diameter of the second wheel body is larger than the outer diameter of the first wheel body, the circular saw blade is clamped and positioned between the two guide wheels and the side surfaces abut against the first wheel body and the second wheel body, and when the circular saw blade rotates, friction drives the two guide wheels to rotate along their respective axes.

[0016] The transmission structure for a ring saw provided by the utility model is characterized in that the circular saw blade and the driving wheel are meshed with each other through a rigid gear ring component and a rigid driving tooth component for transmission. Compared with the transmission connection structure of friction transmission in the prior art, the driving wheel is not easy to slip relative to the circular saw blade, the transmission process is more stable and reliable, and unnecessary energy losses such as sliding friction are reduced, the transmission efficiency is higher, thereby reducing energy consumption and power, and having strong practicality.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the transmission structure of an embodiment of the present invention Figure 1 .

[0020] Figure 2 A schematic diagram of the transmission structure of an embodiment of the present invention Figure 2 .

[0021] Figure 3 This is a schematic structural diagram of a ring saw according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the exploded structure of a ring saw according to an embodiment of the present invention.

[0023] Figure 5 This is a cross-sectional view of a partial structure of a ring saw according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic structural diagram of a ring saw according to another embodiment of the present invention.

[0025] Figure 7 This is a cross-sectional view of a partial structure of a ring saw according to another embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection 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 this utility model based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar expressions used in the specification and claims of this utility model patent application do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation on quantity, but rather indicate the presence of at least one.

[0031] like Figure 1 As shown, as an embodiment of the present invention, a transmission structure for a ring saw is provided, comprising a circular ring saw blade 1 and a driving wheel 2. The circular ring saw blade 1 is mounted and positioned on the cutting body of the ring saw, and the circular ring saw blade 1 has a saw tooth component 11 for cutting arranged along its outer periphery, and a gear ring component 12 for transmission arranged along its inner periphery. The driving wheel 2 is mounted and positioned on the cutting body of the ring saw, and the driving wheel 2 comprises a wheel body 21 and a plurality of driving teeth 22 arranged along the circumferential direction of the wheel body 21. The driving wheel 2 is arranged along the inner circumference of the circular ring saw blade 1, and the driving teeth 22 are meshed and connected with the gear ring component 12. The driving wheel 2 can rotate relative to the cutting body around the driving wheel axis under the drive of the driving device of the ring saw, and drive the circular ring saw blade 1 to rotate relative to the cutting body around the circular ring saw blade axis. In this embodiment, the circular saw blade 1 and the driving wheel 2 are transmitted through the mutual engagement of a rigid ring gear component 12 and a rigid driving tooth component 22. Compared with the transmission connection structure of friction transmission in the prior art, the driving wheel 2 is not easy to slip relative to the circular saw blade 1, the transmission process is more stable and reliable, and unnecessary energy losses such as sliding friction are reduced. The transmission efficiency is higher, thereby reducing energy consumption, reducing power, and having strong practicality.

[0032] like Figure 1As shown, in some specific embodiments, the circular saw blade 1 includes a circular ring body 13, a serration member 11 including a plurality of serrations 111 protruding from the outer peripheral sidewall of the circular ring body 13, and a ring gear member 12 including a plurality of transmission teeth 121 protruding from the inner peripheral sidewall of the circular ring body 13. The plurality of transmission teeth 121 are arranged in a circle along the inner peripheral sidewall of the circular ring body 13, and can drive the circular saw blade 11 to rotate continuously in circles through the meshing transmission between the drive teeth 22 and the transmission teeth 121. The circular ring body 13, the serration member 11, and the ring gear member 12 are arranged on the same plane, so that the circular saw blade 1 can cut a large depth along the plane, which is greater than the distance between the inner and outer sides of the circular saw blade 1.

[0033] like Figure 2 As shown, in some specific embodiments, the drive tooth member 22 is configured as a columnar structure arranged parallel to the axis of the drive wheel 2. In this embodiment, it is configured as a cylindrical structure, which is simple in structure and facilitates transmission cooperation with the transmission tooth portion 121. In other embodiments, it can also be configured as a prismatic structure. The wheel body 21 has a retaining groove 210 recessed inwardly along the circumferential direction from its circumferential side wall for accommodating the inner circumference of the circular saw blade 1. The retaining groove 210 is formed on both sides of the first groove wall 211 and the second groove wall 212 respectively. The two ends of the drive tooth member 22 are respectively connected to the first groove wall 211 and the second groove wall 212. The adjacent two drive tooth members 22 are spaced apart to form a meshing channel 220 for meshing and transmission connection with the transmission tooth portion 121. When the circular saw blade 1 rotates under the meshing transmission of the driving wheel 2, the inner periphery of the circular saw blade 1 is limited between the first groove wall 211 and the second groove wall 212, which can prevent the circular saw blade 1 from moving along its axial direction and disconnecting from the driving wheel 2 during rotation, thereby improving the stability of the circular saw blade 1 during rotation.

[0034] In some specific embodiments, the transmission tooth portion 121 extends from the outer peripheral side wall of the circular body 13 toward the center of the circular saw blade 1, and the transmission tooth portion 121 has a first meshing surface 1211 for abutting against the side surface of the driving tooth 22 to drive the circular saw blade 1 to rotate. The vertical distance between the first meshing surface 1211 and a radial line of the circular saw blade 1 passing through its transmission tooth portion 121 gradually decreases from one end close to the circular body 13 to the end close to the center of the circular saw blade 1, which is used to guide the transmission tooth portion 121 to extend into the meshing channel 220 during the rotation of the circular saw blade 1.

[0035] like Figure 2As shown, in some specific embodiments, the transmission tooth portion 121 further has a second meshing surface 1212 arranged opposite to the first meshing surface 1211, and the vertical distance between the second meshing surface 1212 and a radial line of the circular saw blade 1 passing through its transmission tooth portion 121 gradually decreases from one end close to the circular ring body 13 to the end close to the center direction of the circular saw blade 1, which is used to guide the transmission tooth portion 121 to withdraw from the meshing channel 220 during the rotation of the circular saw blade 1.

[0036] In some specific embodiments, the first groove wall 211 and the second groove wall 212 are correspondingly provided with a plurality of connecting channels for connecting the two ends of the driving gear 22. One end of the driving gear 22 extends into the connecting channel of the first groove wall 211 and is detachably connected to the first groove wall 211, and the other end extends into the corresponding connecting channel arranged on the second groove wall 212 and is detachably connected to the second groove wall 212. This allows each driving gear 22 to be replaced individually. For individually worn driving gears 22, they can be replaced, which facilitates subsequent maintenance and extends the service life of the driving wheel 2. In other embodiments, the two ends of the driving gear 22 can also be fixedly connected to the first groove wall 211 and the second groove wall 212.

[0037] In some specific embodiments, a connecting portion 213 coaxially arranged with the wheel body 21 is provided in the middle of the wheel body 21. The driving wheel 2 can be connected to the driving device of the ring saw through the connecting portion 213, and rotate around the axis of the driving wheel 2 under the power drive of the driving device, and drive the circular saw blade 1 to rotate around the axis of the circular saw blade 1 under the meshing transmission connection between the driving gear 22 and the ring gear component 12.

[0038] like Figure 3-5 As shown, as another embodiment of the present invention, a ring saw is also provided, comprising a cutting body 3 and the above-mentioned transmission structure, wherein the cutting body 3 comprises a shell member 31, a driving device 33, and a positioning structure 32 provided on the shell member 31, one end of the circular ring saw blade 1 is arranged in the shell member 31 and mounted and positioned on the positioning structure 32, the positioning structure 32 is used to position the circular ring saw blade 1 to rotate around its axis, and the driving wheel 2 is mounted and positioned at the output end of the driving device 33. The ring saw of this embodiment, due to the adoption of the transmission structure provided by the present invention, can drive the driving wheel 2 to rotate around the axis of the driving wheel 2 by the power of the driving device 33, thereby utilizing the meshing transmission connection between the ring gear member 12 and the driving tooth member 22 to drive the circular ring saw blade 1 to rotate around the axis of the circular ring saw blade 1, so that the cutting operation of the ring saw is stable and reliable, and has low energy consumption and low power.

[0039] like Figure 4As shown, in some specific embodiments, the drive device 33 includes a drive motor 331, a transmission housing 332 mounted on one side of the housing member 31, and a transmission assembly 333 mounted within the transmission housing 332 and drivingly connected to the output end of the drive motor 331. The drive wheel 2 is mounted and positioned at the output end of the transmission assembly 333. The positioning structure 32 includes two sets of positioning assemblies respectively arranged on both sides of the drive wheel 2. In other embodiments, more assemblies may be provided to improve the stability of the installation and positioning of the circular saw blade 1.

[0040] In some specific embodiments, the driving wheel 2 is made of metal materials such as steel and iron, which has high rigidity and hardness and can withstand a large load. In other embodiments, the driving wheel 2 can also be made of other materials.

[0041] like Figure 5As shown, in some specific embodiments, the positioning assembly 32 includes two guide wheels 321 arranged opposite to each other on either side of the circular saw blade 1, and two bases 322 for mounting the two guide wheels 321, each having a mounting shaft 3221 for mounting the guide wheels 321. The guide wheels 321 are rotatably mounted on the mounting shaft 3221. The two guide wheels 321 are arranged at an angle to the plane of the circular saw blade 1 and include a first wheel body 3211 arranged coaxially and moving synchronously, and a second wheel body 3212 located on the side of the first wheel body 3211 away from the center of the circular saw blade 1. The outer diameter of the second wheel body 3212 is larger than the outer diameter of the first wheel body 3211. The circular saw blade 1 is clamped and positioned between the two guide wheels 321, with its side surfaces abutting against the first wheel body 3211 and the second wheel body 3212. When the circular saw blade 1 rotates, friction drives the two guide wheels 321 to rotate along their respective axes. Since the second friction ring surface for mutual friction with the second wheel body 3212 on the circular saw blade 1 is arranged on the outer side of the first friction ring surface for mutual friction with the first wheel body 3211 on the circular saw blade 1, the circumference of the second friction ring surface is greater than the circumference of the first friction ring surface. When the circular saw blade 1 rotates around its axis, the angular velocities of the first and second friction ring surfaces are the same, but the linear velocity of the second friction ring surface is greater than the linear velocity of the first friction ring surface. Therefore, in this embodiment, the two guide wheels 321 are arranged at an angle to the plane where the circular saw blade 1 is located, and the guide wheel includes a first wheel body 3211 and a second wheel body 3212 with an outer diameter greater than the outer diameter of the first wheel body 3211, so that the circular saw blade 1 drives the second wheel body 3212 to rub against the first wheel body 3211 during rotation. The angular velocity of the wheel body 3211 is the same, and the linear velocity of the second wheel body 3212 is greater than the linear velocity of the first wheel body 3211. Compared with some existing technologies in which the two mounting shafts 3221 are arranged parallel to the plane where the circular ring saw blade 1 is located, the structure of the guide wheel 321 in this embodiment is more adapted to the structure of the circular ring saw blade 1, so that during the rotation of the circular ring saw blade 1, the rolling friction between the second wheel body 3212 and the second friction ring surface is more synchronized with the rolling friction between the first wheel body 3211 and the first friction ring surface, thereby reducing the sliding friction loss between the guide wheel 321 and the circular ring saw blade 1, extending the service life of the guide wheel 321 and the circular arc saw blade 1, and further reducing the energy consumption of the ring saw and reducing the power of the ring saw. In this embodiment, the guide wheels 321 on both sides are arranged at an angle to the plane where the circular saw blade 1 is located, which can simultaneously reduce the sliding friction loss between the guide wheels 321 on both sides and the two side surfaces of the circular saw blade 1. In other embodiments, only one of the guide wheels 321 can be arranged at an angle to the plane where the circular saw blade 1 is located, and the guide wheel 321 is set to include a first wheel body 3211 and a second wheel body 3212 with an outer diameter larger than the outer diameter of the first wheel body 3211, so as to reduce the sliding friction loss between one side of the guide wheel 321 and one side surface of the circular saw blade 1.

[0042] like Figure 6-7As shown, as another embodiment of the present invention, a ring saw is also provided. The difference between this embodiment and the previous embodiment mainly lies in that: the two guide wheels 321 include a first wheel body 3211 which is coaxially arranged with the installation shaft 3221 and rotatably installed on the installation shaft 3221, and a second wheel body 3212 located on the side of the first wheel body 3211 away from the center direction of the circular saw blade 1. The circular saw blade 1 is clamped and positioned between the two guide wheels 321 and the side faces are in contact with the first wheel body 3211 and the second wheel body 3212. When the circular saw blade 1 rotates, friction drives the two guide wheels 321 to rotate, and the angular velocity of the second wheel body 3212 is greater than the angular velocity of the first wheel body 3211. In this embodiment, the second wheel body 3212 and the first wheel body 3211 of the two guide wheels 321 are respectively set as independent structures, and are respectively rotatably connected to the mounting shaft 3221. When the circular saw blade 1 rotates, the second wheel body 3212 is driven to rotate by the rolling friction between the second friction ring surface and the second wheel body 3212, and the first wheel body 3211 is driven to rotate by the rolling friction between the first friction ring surface and the first wheel body 3211. The movement of the second wheel body 3212 does not interfere with the movement of the first wheel body 3211, and the angular velocity of the movement of the second wheel body 3212 is greater than that of the movement of the first wheel body 3211. Angular velocity, compared with some existing technologies in which the first wheel body and the second wheel body are set as a guide wheel of an integrated structure and the guide wheel is arranged parallel to the plane where the circular ring saw blade 1 is located, the guide wheel 321 in this embodiment, during the rotation of the circular ring saw blade 1, the rolling friction between the second wheel body 3212 and the second friction ring surface and the rolling friction between the first wheel body 3211 and the first friction ring surface do not interfere with each other, thereby reducing the sliding friction loss between the guide wheel 321 and the circular ring saw blade 1, extending the service life of the guide wheel 321 and the circular ring saw blade 1, and at the same time further reducing the energy consumption of the ring saw and reducing the power of the ring saw. In this embodiment, the guide wheels 321 on both sides are configured to include a first wheel body 3211 that is coaxially arranged with the mounting shaft 3221 and rotatable and is installed on the mounting shaft 3221, and a second wheel body 3212 that is located on the side of the first wheel body 3211 away from the center of the circular saw blade 1, which can simultaneously reduce the sliding friction loss between the guide wheels 321 on both sides and the two side surfaces of the circular saw blade 1. In other embodiments, only one of the guide wheels 321 can be configured to include a first wheel body 3211 that is coaxially arranged with the mounting shaft 3221 and rotatable and is installed on the mounting shaft 3221, and a second wheel body 3212 that is located on the side of the first wheel body 3211 away from the center of the circular saw blade 1, which is used to reduce the sliding friction loss between one side of the guide wheel 321 and one side of the circular saw blade 1.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention.

[0044] In short, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention patent.

Claims

1. A transmission structure for a ring saw, characterized in that: include: A circular saw blade is mounted and positioned on the cutting body of the ring saw, wherein the circular saw blade has a saw tooth component arranged along its outer periphery for cutting, and a gear ring component arranged along its inner periphery for transmission; A driving wheel is mounted and positioned on the cutting body of the ring saw, wherein the driving wheel comprises a wheel body and a plurality of driving teeth arranged along the circumference of the wheel body; The driving wheel is arranged along the inner circumference of the circular saw blade, and the driving gear is meshed and connected with the ring gear component. The driving wheel can rotate around the driving wheel axis relative to the cutting body under the drive of the driving device of the ring saw, and drive the circular saw blade to rotate around the circular saw blade axis relative to the cutting body.

2. The transmission structure according to claim 1, characterized in that: The circular saw blade includes a circular ring body, the serrated component includes a plurality of serrated portions protruding from the outer peripheral side wall of the circular ring body, the ring gear component includes a plurality of transmission tooth portions protruding from the inner peripheral side wall of the circular ring body, and the plurality of transmission tooth portions are arranged in a circle along the inner peripheral side wall of the circular ring body. The circular ring body, the serrated component, and the ring gear component are arranged on the same plane.

3. The transmission structure according to claim 2, characterized in that: The driving tooth member is configured as a columnar structure arranged parallel to the axis of the driving wheel. The wheel body is provided with a limiting groove recessed inward along the circumferential direction from its circumferential side wall for accommodating the inner peripheral edge of the circular saw blade. The two sides of the limiting groove form a first groove wall and a second groove wall respectively. The two ends of the driving tooth member are respectively connected to the first groove wall and the second groove wall. The two adjacent driving teeth are arranged at intervals to form an engagement channel for engaging with the transmission tooth portion for transmission connection.

4. The transmission structure according to claim 3, characterized in that: The transmission tooth portion extends from the outer peripheral side wall of the circular ring body toward the center of the circular ring saw blade. The transmission tooth portion has a first meshing surface for abutting against the surface of one side of the driving tooth member to drive the circular ring saw blade to rotate. The vertical distance between the first meshing surface and a radial line of the circular ring saw blade passing through its transmission tooth portion gradually decreases from one end close to the circular ring body to the end close to the center of the circular ring saw blade.

5. The transmission structure according to claim 4, characterized in that: The transmission tooth portion also has a second meshing surface arranged opposite to the first meshing surface, and the vertical distance between the second meshing surface and a radial line of the circular saw blade passing through its transmission tooth portion gradually decreases from one end close to the circular ring body to the end close to the center of the circular saw blade.

6. The transmission structure according to claim 3, characterized in that: Several groups of connecting channels are correspondingly provided on the first groove wall and the second groove wall, respectively used to connect the two ends of the driving tooth member. One end of the driving tooth member extends into the connecting channel of the first groove wall and is detachably connected to the first groove wall, and the other end extends into the corresponding connecting channel arranged on the second groove wall and is detachably connected to the second groove wall.

7. The transmission structure according to any one of claims 1 to 6, characterized in that: A connecting portion coaxially arranged with the wheel body is provided in the middle of the wheel body. The driving wheel can be connected to the driving device of the ring saw through the connecting portion and rotate around the driving wheel axis under the power of the driving device.

8. A ring saw, characterized in that: It comprises a cutting body and a transmission structure as described in any one of claims 1 to 7, wherein the cutting body comprises a shell component, a driving device, and a positioning structure arranged on the shell component, one end of the circular saw blade is arranged in the shell component and mounted and positioned on the positioning structure, and the driving wheel is mounted and positioned at the output end of the driving device.

9. The ring saw according to claim 8, characterized in that: The driving device includes a driving motor, a transmission housing installed on one side of the shell component, a transmission assembly installed in the transmission housing and transmission-connected to the output end of the driving motor, the driving wheel is installed and positioned at the output end of the transmission assembly, and the positioning structure includes at least two groups of positioning assemblies respectively arranged on both sides of the driving wheel.

10. The ring saw according to claim 9, characterized in that: The positioning assembly includes two guide wheels arranged opposite to each other on both sides of the circular saw blade, and two bases for mounting the two guide wheels respectively, wherein the bases have mounting shafts for mounting the guide wheels; At least one of the guide wheels comprises a first wheel body coaxially arranged with the mounting shaft and rotatably mounted on the mounting shaft, and a second wheel body located on a side of the first wheel body away from the center of the circular saw blade, the circular saw blade is clamped and positioned between the two guide wheels, and the side surface abuts against the first wheel body and the second wheel body, and when the circular saw blade rotates, friction drives the two guide wheels to rotate, and the angular velocity of the second wheel body is greater than the angular velocity of the first wheel body; or, The guide wheel is rotatably mounted on the mounting shaft along its axis, wherein at least one of the guide wheels is arranged at an angle to the plane where the circular saw blade is located, and includes a first wheel body that is coaxially arranged and moves synchronously and a second wheel body located on the side of the first wheel body away from the center of the circular saw blade, the outer diameter of the second wheel body is larger than the outer diameter of the first wheel body, the circular saw blade is clamped and positioned between the two guide wheels and the side surfaces abut against the first wheel body and the second wheel body, and when the circular saw blade rotates, friction drives the two guide wheels to rotate along their respective axes.

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