Cutting device with synchronous guide wheels

Abstract

The cutting device comprises a cutting body and a circular saw blade, one end of the circular saw blade is arranged in the cutting body, a positioning structure and a driving structure are arranged on the cutting body, the positioning structure comprises a positioning assembly, and the positioning assembly comprises a first synchronous guide wheel and a second synchronous guide wheel. The first synchronous guide wheel and the second synchronous guide wheel are respectively provided with a first wheel body and a second wheel body, an included angle is formed between the axis of at least one of the first synchronous guide wheel and the second synchronous guide wheel and the plane where the circular saw blade is located, the outer diameter of the second wheel body is larger than that of the first wheel body, and the circular saw blade is clamped and positioned between the first synchronous guide wheel and the second synchronous guide wheel. When the circular saw blade rotates, the first synchronous guide wheels and the second synchronous guide wheels can be driven to rotate along respective axes through friction with the outer side walls of the first wheel bodies and the second wheel bodies. According to the cutting device, the loss of sliding friction force between the synchronous guide wheel and the circular saw blade can be reduced, the additional energy consumption is reduced, the power is reduced, and the service life of the cutting device is prolonged.

Description

Technical Field

[0001] The invention relates to the field of cutting devices, and in particular to a cutting device with a synchronous guide wheel. Background Art

[0002] The cutting device is mainly used to cut walls, floors, doors and windows, tiles, steel bars, concrete and other materials at the construction site.

[0003] Existing cutting devices, such as a utility model patent entitled "A water-cooled ring saw with a limiting stabilization mechanism" (publication number: CN220903778U), mainly include a saw blade guard, a ring saw blade installed and positioned in the saw blade guard at one end through an adjustment mechanism, and a driving mechanism for driving the ring saw blade to rotate, wherein the driving mechanism drives the ring saw blade to rotate by friction between a driving wheel and the inner side of the ring saw blade, wherein the adjustment mechanism includes four positioning guide wheels symmetrically arranged on both sides of the ring saw blade, the four positioning guide wheels are respectively arranged parallel to the ring saw blade, and are arranged as an integral cylindrical structure, the ring saw blade is clamped between the four positioning guide wheels, and when the ring saw blade rotates, the positioning guide wheels are driven to rotate by friction with each positioning guide wheel.

[0004] In the above technical scheme, since the circumferences of the inner and outer rings of the annular saw blade are different, that is, the angular velocities of the inner and outer rings of the annular saw blade are the same but the linear velocities are different, when the positioning guide wheel rotates with the annular saw blade, the friction between the side close to the center of the annular saw blade and the inner ring of the annular saw blade and the rolling friction between the side away from the center of the annular saw blade and the outer ring of the annular saw blade produces a speed difference, and the positioning guide wheel is arranged as an integrated structure, thereby generating sliding friction between the positioning guide wheel and the annular saw blade, resulting in large friction loss, large additional energy consumption, high power, large wear on the positioning guide wheel and the annular saw blade, and short service life. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a cutting device with a synchronous guide wheel, comprising a cutting body and a circular saw blade arranged at one end inside the cutting body, the cutting body being provided with a positioning structure for installing the circular saw blade and a driving structure for driving the circular saw blade to rotate; the positioning structure comprising at least two groups of positioning components, the positioning components comprising a first synchronous guide wheel and a second synchronous guide wheel relatively arranged on both sides of the circular saw blade, the first and second synchronous guide wheels respectively comprising a first wheel body coaxially arranged and synchronously moving and a second wheel body located on a side of the first wheel body away from the center of the circular saw blade, the axis of at least one of the first and second synchronous guide wheels forming an angle with the plane where the circular saw blade is located and 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 each group of relatively arranged first synchronous guide wheel and second synchronous guide wheel, and when the circular saw blade rotates, it can drive each of the first and second synchronous guide wheels to rotate along their respective axes by friction with the outer side walls of each of the first and second wheel bodies.

[0006] Preferably, the two side surfaces of the circular saw blade are respectively provided with a first friction ring surface arranged corresponding to the first wheel body and a second friction ring surface arranged corresponding to the second wheel body around its axis, and the radius of the second friction ring surface is greater than the radius of the first friction ring surface, and the distance between the second friction ring surface and the axis of the second wheel body is greater than the distance between the first friction ring surface and the axis of the first wheel body.

[0007] Preferably, the distance between the outer wall of the first wheel body and its axis gradually increases from one end close to the center of the circular saw blade to one end far away from the center of the circular saw blade, and the distance between the outer wall of the second wheel body and its axis gradually increases from one end close to the center of the circular saw blade to one end far away from the center of the circular saw blade, and the outer diameter of the outer wall of the second wheel body close to the center of the circular saw blade is greater than or equal to the outer diameter of the outer wall of the first wheel body far away from the center of the circular saw blade.

[0008] Preferably, the side surface of the circular saw blade is also provided with at least one circular guide groove around its axis, which is arranged between the first friction ring surface and the second friction ring surface. At least one fourth wheel body is also provided between the first wheel body and the second wheel body, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The outer peripheral side of the fourth wheel body protrudes from the outer peripheral sides of the first wheel body and the second wheel body, and one end of the fourth wheel body is limited in the circular guide groove, and can be guided along the movement of the fourth wheel body through the circular guide groove when the circular saw blade rotates.

[0009] Preferably, the side surface of the circular saw blade is provided with at least two coaxially arranged annular guide grooves, and the two adjacent annular guide grooves are arranged at intervals to form a third friction ring surface on the side surface of the circular saw blade, and the corresponding fourth wheel body is coaxially provided with at least two, and a third wheel body is provided between the two adjacent fourth wheel bodies, which is coaxially arranged with the first and second wheel bodies and moves synchronously, and the distance between the outer side wall of the third wheel body and the axis of the third wheel body gradually increases from one end close to the center direction of the circular saw blade to the end far away from the center direction of the circular saw blade, and the outer side wall of the third wheel body close to the circular saw The distance between one end of the outer wall of the first wheel body in the direction of the center of the circular saw blade and the axis of the third wheel body is greater than the distance between one end of the outer wall of the first wheel body away from the center of the circular saw blade and the axis of the first wheel body, and the distance between one end of the outer wall of the third wheel body away from the center of the circular saw blade and the axis of the third wheel body is smaller than the distance between one end of the outer wall of the second wheel body close to the center of the circular saw blade and the second wheel body. When the circular saw blade rotates, it can drive the corresponding first synchronous guide wheel or the second synchronous guide wheel to rotate along its axis through the friction between the third friction ring surface and the correspondingly arranged outer wall of the third wheel body.

[0010] Preferably, at least one sixth wheel body is provided between the first wheel body and the second wheel body, which is coaxially arranged with the first and second wheel bodies and moves synchronously with them. The outer peripheral side of the sixth wheel body is recessed relative to the outer peripheral sides of the first wheel body and the second wheel body, and the outer side wall of the sixth wheel body does not contact the circular saw blade.

[0011] Preferably, there are at least two sixth wheel bodies coaxially arranged, and a fifth wheel body coaxially arranged with the first and second wheel bodies and moving synchronously is provided between two adjacent sixth wheel bodies, and the distance between the outer wall of the fifth wheel body and the axis of the fifth wheel body gradually increases from one end close to the center of the circular saw blade to the end away from the center of the circular saw blade, and the distance between the end of the outer wall of the fifth wheel body close to the center of the circular saw blade and the axis of the fifth wheel body is greater than the distance between the end of the outer wall of the first wheel body away from the center of the circular saw blade and the axis of the first wheel body, and the distance between the end of the outer wall of the fifth wheel body away from the center of the circular saw blade and the axis of the fifth wheel body is greater than the distance between the end of the outer wall of the first wheel body away from the center of the circular saw blade and the axis of the fifth wheel body. The distance is smaller than the distance between one end of the outer wall of the second wheel body close to the center of the circular saw blade and the axis of the second wheel body, and the distance between one end of the outer wall of the fifth wheel body away from the center of the circular saw blade and the axis of the fifth wheel body is smaller than the distance between one end of the outer wall of the second wheel body close to the center of the circular saw blade and the axis of the second wheel body. A fourth friction ring surface arranged corresponding to the fifth wheel body is also provided between the corresponding first friction ring surface and the second friction ring surface. When the circular saw blade rotates, the corresponding first synchronous guide wheel or the second synchronous guide wheel can be driven to rotate along its axis through the friction between the fourth friction ring surface and the corresponding outer wall of the fifth wheel body.

[0012] Preferably, the angle is 3°-7°, and the ratio of the diameter of the correspondingly arranged first wheel body to the diameter of the first friction ring surface is equal to or substantially equal to the ratio of the diameter of the second wheel body to the diameter of the second friction ring surface; the wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel are arranged as an integral structure, or the wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel are relatively fixed and cannot rotate relative to each other, and when the circular saw blade rotates, the friction drives the wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel to rotate at the same angular velocity.

[0013] Preferably, the cutting body includes a first shell and a second shell arranged relatively on both sides of the circular saw blade, the first shell and the second shell are detachably connected and surround each other to form an installation chamber, a first base is arranged in the first shell, the first base has a first base shaft extending along the axial direction of the first synchronous guide wheel toward the side close to the center of the circular saw blade, the first synchronous guide wheel is rotatably positioned and installed on the first base shaft, a second base is arranged in the second shell, the second base has a second base shaft extending along the axial direction of the second synchronous guide wheel toward the side close to the center of the circular saw blade, the second synchronous guide wheel is rotatably positioned and installed on the second base shaft; a first adjustment structure for adjusting the preload force between the first synchronous guide wheel and the circular saw blade is arranged between the first base and the first shell, and / or a second adjustment structure for adjusting the preload force between the second synchronous guide wheel and the circular saw blade is arranged between the second base and the second shell.

[0014] Preferably, the circular saw blade is configured as a circular ring structure with a hollow circle in the middle, the sawtooth components are arranged along the outer circumference of the circular ring structure, and the inner circumference of the circular ring structure is provided with a gear ring component along its circumferential direction, the driving structure comprises a driving motor, a transmission housing mounted on the cutting body, a transmission assembly mounted in the transmission housing and transmission-connected to the output end of the driving motor, the output end of the transmission assembly is transmission-connected to a driving wheel, the driving wheel is arranged along the inner circumference of the circular ring structure, and is meshingly transmission-connected with the gear ring component through driving teeth arranged along its circumferential direction, and can rotate around the axis of the driving wheel under the drive of the driving motor, and drive the circular saw blade to rotate around the axis of the circular saw blade; the positioning assembly is provided with two groups, the two groups of positioning assemblies are respectively arranged on both sides of the driving wheel, the first synchronous guide wheel of each group of positioning assemblies is provided with the same structure, and the second synchronous guide wheel is provided with the same structure.

[0015] The cutting device provided by the present invention has an included angle between the axis of at least one of the first and second synchronous guide wheels and the plane where the circular saw blade is located, and the outer diameter of the second wheel body is larger than the outer diameter of the first wheel body, that is, at least one of the first and second synchronous guide wheels is arranged at an included angle with the circular saw blade, and the circumference of the second wheel body is larger than the circumference of the first wheel body. Since the circular saw blade is clamped and positioned by abutting against the first wheel body and the second wheel body of the first synchronous guide wheel on one side and the first wheel body and the second wheel body of the second synchronous guide wheel on the other side, when the circular saw blade is driven to rotate by the driving structure, The second wheel body and the first wheel body, which are arranged at an angle to the circular saw blade, rotate under the friction of the circular saw blade. Although the second wheel body and the first wheel body have the same angular velocity, the linear velocity of the second wheel body is greater than that of the first wheel body, which is more compatible with the structure of the circular saw blade, so that the rolling friction between the second wheel body and the outer ring of the circular saw blade is more synchronized with the rolling friction between the first wheel body and the inner ring of the circular saw blade, thereby reducing the sliding friction loss between the synchronous guide wheel and the circular saw blade, reducing additional energy consumption, reducing power, and extending the service life of the cutting device.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 The structure of the cutting device according to one embodiment of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 The structure of the cutting device according to one embodiment of the present invention is shown in FIG. Figure 2 .

[0020] Figure 3 It is a schematic cross-sectional structural diagram of a cutting device according to an embodiment of the present invention.

[0021] Figure 4 The figure is a schematic diagram of the exploded structure of a cutting device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0027] like Figure 1-4As shown, as an embodiment of the present invention, a cutting device with a synchronous guide wheel is provided, including a cutting body 3 and a circular saw blade 1 with one end arranged in the cutting body 3, and the cutting body 3 is provided with a positioning structure for installing the circular saw blade 1 and a driving structure 4 for driving the circular saw blade 1 to rotate. Among them, the positioning structure includes two groups of positioning components 2, and the positioning component 2 includes a first synchronous guide wheel 21a and a second synchronous guide wheel 21b arranged relatively on both sides of the circular saw blade 1. The first and second synchronous guide wheels respectively have a first wheel body 211 arranged coaxially and moving synchronously and a second wheel body 212 located on the side of the first wheel body 211 away from the center of the circular saw blade 1. The axes of the first and second synchronous guide wheels form an angle A with the plane where the circular saw blade 1 is located, and the outer diameter of the second wheel body 212 is larger than the outer diameter of the first wheel body 211. The circular saw blade 1 is clamped and positioned between each group of relatively arranged first synchronous guide wheels 21a and second synchronous guide wheels 21b. When the circular saw blade 1 rotates, it can drive the first and second synchronous guide wheels to rotate along their respective axes through friction with the outer side walls of the first and second wheel bodies. In this embodiment, since the axes of the first and second synchronous guide wheels form an angle A with the plane where the circular saw blade 1 is located and the outer diameter of the second wheel body 212 is greater than the outer diameter of the first wheel body 211, that is, the first and second synchronous guide wheels are arranged at an angle A with the circular saw blade 1 respectively and the circumference of the second wheel body 212 is greater than the circumference of the first wheel body 211. Since the circular saw blade 1 is clamped and positioned by abutting against the first wheel body 211 and the second wheel body 212 of the first synchronous guide wheel 21a on one side and the first wheel body 211 and the second wheel body 212 of the second synchronous guide wheel 21b on the other side, when the circular saw blade 1 is driven to rotate by the driving structure 4, it is not clamped against the circular saw blade 1. The second wheel body 212 and the first wheel body 211, which are arranged at an angle to the saw blade 1, rotate under the friction of the circular saw blade 1. Although the second wheel body 212 and the first wheel body 211 have the same angular velocity, the linear velocity of the second wheel body 212 is greater than the linear velocity of the first wheel body 211, and is more compatible with the structure of the circular saw blade 1, so that the rolling friction between the second wheel body 212 and the outer ring of the circular saw blade 1 and the rolling friction between the first wheel body 211 and the inner ring of the circular saw blade 1 are more synchronized, thereby reducing the sliding friction loss between the synchronous guide wheel and the circular saw blade 1, reducing additional energy consumption, reducing power, and extending the service life of the cutting device.In the present embodiment, the first synchronous guide wheel 21a and the second synchronous guide wheel 21b are both configured to have an axis forming an angle A with the plane where the circular saw blade is located and the outer diameter of the second wheel body 212 is greater than the outer diameter of the first wheel body 211, which can simultaneously reduce the sliding friction loss between the first synchronous guide wheel 21a and the second synchronous guide wheel 21b and the two side surfaces of the circular saw blade 1 respectively. In other embodiments, only any one of the first synchronous guide wheel 21a and the second synchronous guide wheel 21b can be configured to have an axis forming an angle A with the plane where the circular saw blade is located and the outer diameter of the second wheel body 212 is greater than the outer diameter of the first wheel body 211, which is used to reduce the sliding friction loss between one of the synchronous guide wheels and one side surface of the circular saw blade 1.

[0028] like Figure 3 As shown, in some specific embodiments, the two side surfaces of the circular saw blade 1 are respectively provided with a first friction ring surface 12 arranged corresponding to the first wheel body 211 and a second friction ring surface 13 arranged corresponding to the second wheel body 212 around its axis, and the radius of the second friction ring surface 13 is greater than the radius of the first friction ring surface 12, that is, the circumference of the second friction ring surface 13 is greater than the circumference of the first friction ring surface 12. The distance between the second friction ring surface 13 and the axis of the second wheel body 212 is greater than the distance between the first friction ring surface 12 and the axis of the first wheel body 211, that is, the circumference of the second wheel body 212 is greater than the circumference of the first wheel body 211. The axis of the second wheel body 212 and the axis of the first wheel body 211 are arranged on the same straight line. The ratio of the diameter of the second friction ring surface 13 to the diameter of the second wheel body 212 is equal to or substantially equal to the ratio of the diameter of the first friction ring surface 12 to the diameter of the first wheel body 211, that is, the ratio of the circumference of the second friction ring surface 13 to the circumference of the second wheel body 212 is equal to or substantially equal to the ratio of the circumference of the first friction ring surface 12 to the circumference of the first wheel body 211, so as to ensure that the rolling friction between the second wheel body 212 and the second friction ring surface 13 is more synchronized with the rolling friction between the first wheel body 211 and the first friction ring surface 12, thereby reducing the sliding friction loss between the synchronous guide wheel and the circular saw blade, reducing the additional energy consumption, reducing the power, and extending the service life of the synchronous guide wheel and the circular saw blade. Since the diameter of the first friction ring surface 12 of most cutting devices on the market is generally set to about 30 cm, and the diameter of the second friction ring surface 13 is generally set to about 50 cm, therefore, in this embodiment, the angle A is set to 3°-7°, especially 5°-6°, and particularly 5.2°, which is suitable for most cutting devices on the market. In other embodiments, the appropriate angle can also be configured according to the specifications of the cutting device.

[0029] In some specific embodiments, on the first synchronous guide wheel 21a, the ratio of the diameter of the first wheel body 211 to the diameter of the first friction ring surface 12, the ratio of the diameter of the second wheel body 212 to the diameter of the second friction ring surface 13, and the ratio of the diameter of the third wheel body 213 to the diameter of the third friction ring surface 14 are equal or substantially equal, that is, the ratio of the circumference of the first wheel body 211 to the circumference of the first friction ring surface 12, the ratio of the circumference of the second wheel body 212 to the circumference of the second friction ring surface 13, and the ratio of the circumference of the third wheel body 213 to the circumference of the third friction ring surface 14 are equal or substantially equal. The circumference of the diameter of the third friction ring surface 14 is equal or substantially equal to the circumference of the diameter of the first wheel body 211 and the first friction ring surface 12, the rolling friction between the second wheel body 212 and the second friction ring surface 13, and the rolling friction between the third wheel body 213 and the third friction ring surface 14 are more synchronized, thereby reducing the sliding friction loss between the first synchronous guide wheel 21a and the circular saw blade 1, reducing the extra energy consumption, reducing the power, and extending the first synchronous guide wheel 21a and the circular saw blade 1. service life; on the second synchronous guide wheel 21b, the ratio of the diameter of the first wheel body 211 to the diameter of the first friction ring surface 12, the ratio of the diameter of the second wheel body 212 to the diameter of the second friction ring surface 13, and the ratio of the diameter of the fifth wheel body 215 to the diameter of the fourth friction ring surface 15 are equal or substantially equal, that is, the ratio of the circumference of the first wheel body 211 to the circumference of the first friction ring surface 12, the ratio of the circumference of the second wheel body 212 to the circumference of the second friction ring surface 13, and the circumference of the fifth wheel body 215 The ratio of the circumference of the first wheel body 211 to the circumference of the fourth friction ring surface 15 is equal or substantially equal to ensure that the rolling friction between the first wheel body 211 and the first friction ring surface 12, the rolling friction between the second wheel body 212 and the second friction ring surface 13, and the rolling friction between the fifth wheel body 215 and the fourth friction ring surface 15 are more synchronized, thereby reducing the sliding friction loss between the second synchronous guide wheel 21b and the circular saw blade 1, reducing additional energy consumption, reducing power, and extending the service life of the second synchronous guide wheel 21b and the circular saw blade 1.

[0030] like Figure 3As shown, in some specific embodiments, the first wheel body 211, the second wheel body 212, the third wheel body 213, and the fourth wheel body 214 on the first synchronous guide wheel 21a are set as an integral structure, and the first wheel body 211, the second wheel body 212, the fifth wheel body 215, and the sixth wheel body 216 on the second synchronous guide wheel 21b are set as an integral structure, and the structure is stable and reliable, so that when the circular saw blade 1 rotates, the friction drives the first synchronous guide wheel 21a and the second synchronous guide wheel 21b to rotate at the same angular velocity. In other embodiments, the wheel bodies on the same first synchronous guide wheel 21a or second synchronous guide wheel 21b can also be set as independent structures, and the wheel bodies are relatively fixed and cannot be relatively rotated. This can also make the friction drive the first synchronous guide wheel 21a and the second synchronous guide wheel 21b to rotate at the same angular velocity when the circular saw blade 1 rotates.

[0031] In some specific embodiments, the distance between the outer wall of the first wheel body 211 and its axis gradually increases from one end close to the center of the circular saw blade 1 to one end away from the center of the circular saw blade 1, and the distance between the outer wall of the second wheel body 212 and its axis gradually increases from one end close to the center of the circular saw blade 1 to one end away from the center of the circular saw blade 1, which is adapted to the structure of the circular saw blade 1. Optionally, the side surfaces of the second wheel body 212 and the first wheel body 211 of the first synchronous guide wheel 21a are arranged on the same conical surface and are arranged at intervals or connected to each other, so that the outer diameter of the outer wall of the second wheel body 212 at one end close to the center of the circular saw blade 1 is greater than or equal to the outer diameter of the outer wall of the first wheel body 211 at one end away from the center of the circular saw blade 1, and can respectively make surface-to-surface contact with the side surface of the circular saw blade 1 during the rotation operation of the circular saw blade 1, disperse the force-bearing surface during friction, and reduce the wear on the first synchronous guide wheel 21a or one side surface of the circular saw blade 1. The second wheel body 212 of the second synchronous guide wheel 21b and the side surface of the first wheel body 211 are arranged on the same conical surface and are arranged at intervals or connected to each other, so that the outer diameter of the outer wall of the second wheel body 212 close to the center direction of the circular saw blade 1 is greater than or equal to the outer diameter of the outer wall of the first wheel body 211 away from the center direction of the circular saw blade 1, and can respectively make surface contact with the side surface of the circular saw blade 1 during the rotation operation of the circular saw blade 1, disperse the force surface during friction, and reduce the wear on the second synchronous guide wheel 21b or the other side surface of the circular saw blade 1.

[0032] like Figure 2 , 3As shown, in some specific embodiments, one side surface of the circular saw blade 1 is also provided with two circular guide grooves 11 arranged between the first friction ring surface 12 and the second friction ring surface 13 around its axis, and the two adjacent circular guide grooves 11 are arranged at intervals to form a third friction ring surface 14 on the side surface of the circular saw blade 1. Correspondingly, two fourth wheel bodies 214 arranged coaxially with the first and second wheel bodies and moving synchronously are also provided between the first wheel body 211 and the second wheel body 212 of the first synchronous guide wheel 21a, and each fourth wheel body 214 is arranged coaxially with the first and second wheel bodies and moving synchronously, and the outer peripheral side of the fourth wheel body 214 protrudes from the outer peripheral side of the first wheel body 211 and the second wheel body 212, and one end of the fourth wheel body 214 is limited in the correspondingly arranged circular guide groove 11, and can be guided by the circular guide groove 11 along the movement of the fourth wheel body 214 when the circular saw blade 1 rotates, so as to prevent the circular saw blade 1 from falling off from the synchronous guide wheel positioning assembly 2 during the rotation process, thereby improving the safety during use. A third wheel body 213 is provided between the two fourth wheel bodies 214, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The distance between the outer wall of the third wheel body 213 and the axis of the third wheel body 213 gradually increases from the end close to the center of the circular saw blade 1 to the end away from the center of the circular saw blade 1. The distance between the end of the outer wall of the third wheel body 213 close to the center of the circular saw blade 1 and the axis of the third wheel body 213 is greater than the distance between the end of the outer wall of the first wheel body 211 away from the center of the circular saw blade 1 and the axis of the first wheel body 211, and the distance between the end of the outer wall of the third wheel body 213 away from the center of the circular saw blade 1 and the axis of the third wheel body 213 is less than the distance between the end of the outer wall of the second wheel body 212 close to the center of the circular saw blade 1 and the axis of the second wheel body 212, which is adapted to the structure of the circular saw blade 1. The third wheel body 213 of the first synchronous guide wheel 21a is arranged on the same conical surface as the side surfaces of the second wheel body 212 and the first wheel body 211 and are arranged at intervals from each other. The third friction ring surface 14 can further drive the first synchronous guide wheel 21a to rotate along its axis through friction with the corresponding outer wall of the third wheel body 213. The third wheel body 213 and the third friction ring surface 14 are in surface contact, which further disperses the force surface during friction and reduces the wear on one side of the first synchronous guide wheel 21a or the circular saw blade 1. In other embodiments, the second synchronous guide wheel 21b can also be set to include the above-mentioned third wheel body 213 and the fourth wheel body 214. The friction between the third friction ring surface 14 and the corresponding outer wall of the third wheel body 213 drives the second synchronous guide wheel 21b to rotate along its axis, reducing the wear on the other side of the second synchronous guide wheel 21b or the circular saw blade 1.In other embodiments, only one circular guide groove 11 may be provided, and correspondingly, only one fourth wheel body 214 may be arranged between the first wheel body 211 and the second wheel body 212, and in this case, there is no need to arrange the third wheel body 213; or a larger number of circular guide grooves 11 may be provided, and correspondingly, a larger number of fourth wheel bodies 214 may be arranged between the first wheel body 211 and the second wheel body 212, and in this case, the third wheel body 213 may be arranged between two adjacent fourth wheel bodies 214.

[0033] In some specific embodiments, two sixth wheel bodies 216 are arranged coaxially with the first and second wheel bodies and move synchronously between the first wheel body 211 and the second wheel body 212 of the second synchronous guide wheel 21b. The outer peripheral side of each sixth wheel body 216 is recessed relative to the outer peripheral side of the first wheel body 211 and the second wheel body 212. The outer side wall of the sixth wheel body 216 does not contact the circular saw blade 1, which is convenient for heat dissipation. A fifth wheel body 215 is arranged coaxially with the first and second wheel bodies and moves synchronously between two adjacent sixth wheel bodies 216. The distance between the outer side wall of the fifth wheel body 215 and the axis of the fifth wheel body 215 gradually increases from one end close to the center of the circular saw blade 1 to the end away from the center of the circular saw blade 1. The distance between the end of the outer side wall of the fifth wheel body 215 close to the center of the circular saw blade 1 and the axis of the fifth wheel body 215 is greater than the distance between the end of the outer side wall of the first wheel body 211 away from the center of the circular saw blade 1 and the axis of the first wheel body 211 , and the distance between the end of the outer wall of the fifth wheel body 215 away from the center of the circular saw blade 1 and the axis of the fifth wheel body 215 is smaller than the distance between the end of the outer wall of the second wheel body 212 close to the center of the circular saw blade 1 and the axis of the second wheel body 212, and the distance between the end of the outer wall of the fifth wheel body 215 away from the center of the circular saw blade 1 and the axis of the fifth wheel body 215 is smaller than the distance between the end of the outer wall of the second wheel body 212 close to the center of the circular saw blade 1 and the axis of the second wheel body 212, which is adapted to the structure of the circular saw blade 1. A fourth friction ring surface 15 arranged corresponding to the fifth wheel body 215 is also provided between the corresponding first friction ring surface 12 and the second friction ring surface 12. When the circular saw blade 1 rotates, the friction between the fourth friction ring surface 15 and the corresponding outer wall of the fifth wheel body 215 can drive the second synchronous guide wheel 21b to rotate along its axis. The fifth wheel body 215 of the second synchronous guide wheel 21b is arranged on the same conical surface as the side surfaces of the second wheel body 212 and the first wheel body 211 and is arranged at intervals from each other. The friction between the fourth friction ring surface 15 and the corresponding outer wall of the fifth wheel body 215 can further drive the second synchronous guide wheel 21b to rotate along its axis. The surface contact between the fifth wheel body 215 and the fourth friction ring surface 15 can further disperse the force surface during friction, thereby reducing the wear on the other side of the second synchronous guide wheel 21b or the circular saw blade 1. In other embodiments, the first synchronous guide wheel 21a can also be set to include the structure of the fifth wheel body 215 and the sixth wheel body 216, so that the friction between the fourth friction ring surface 15 and the corresponding outer wall of the fifth wheel body 215 can drive the first synchronous guide wheel 21a to rotate along its axis, thereby reducing the wear on one side of the first synchronous guide wheel 21a or the circular saw blade 1.In other embodiments, only one sixth wheel body 216 may be arranged between the first wheel body 211 and the second wheel body 212, and there is no need to set the fifth wheel body 215. Alternatively, a larger number of sixth wheel bodies 216 may be arranged between the first wheel body 211 and the second wheel body 212, and the fifth wheel body 215 may be arranged between two adjacent sixth wheel bodies 216.

[0034] like Figure 4 As shown, in some specific embodiments, the cutting body 3 includes a first housing 31 and a second housing 32 arranged on both sides of the circular saw blade 1. The first housing 31 and the second housing 32 are detachably connected and surround each other to form an installation chamber. One end of the circular saw blade 1 is installed and positioned in the installation chamber through the positioning assembly 2. A first base 311 is arranged in the first housing 31. The first base 311 has a first base shaft 312 extending along the axis direction of the first synchronous guide wheel 21a toward a side close to the center of the circular saw blade 1. An angle A is formed between the first base shaft 312 and the circular saw blade 1. The first synchronous guide wheel 21a is installed and positioned on the first base shaft 312 through a fastening structure such as a nut (not shown in the figure), and is rotatably sleeved outside the first base shaft 312, or is rotatably sleeved outside the first base shaft 312 through a bearing. A second base 321 is arranged in the second shell body 32, and the second base 321 has a second base shaft 322 extending along the axial direction of the second synchronous guide wheel 21b toward the side close to the center of the circular saw blade 1, and an angle A is formed between the second base shaft 322 and the circular saw blade 1. The second synchronous guide wheel 21b is mounted and positioned on the second base shaft 322 by a fastening structure such as a nut (not shown in the figure), and is rotatably sleeved outside the second base shaft 322, or is rotatably sleeved outside the second base shaft 322 by a bearing. When the circular saw blade 1 rotates, the friction drives the first synchronous guide wheel 21a to rotate around the first base shaft 312, and the second synchronous guide wheel 21b to rotate around the second base shaft 322.

[0035] In some specific embodiments, a second adjustment structure (not shown in the figure) for adjusting the preload force between the second synchronous guide wheel 21b and the circular saw blade 1 is provided between the second base 321 and the first shell 31. The second adjustment structure can adjust the relative distance between the second synchronous guide wheel 21b and the first synchronous guide wheel 21a by driving the second base 321 to move closer to or away from the first base 311, thereby adjusting the preload force between the positioning assembly 2 and the circular saw blade 1. Optionally, an adjustment member 1 3211 and an adjustment member 2 3212 are respectively protruded on both sides of the second base 321. A connecting channel 3213 arranged parallel to the axial direction of the second base axis 322 is penetrated on the adjustment member 1 3211, and an adjustment channel 3214 arranged parallel to the radial direction of the second base axis 322 is penetrated on the adjustment member 2 3212. A matching channel 323 arranged corresponding to the adjustment channel 3214 is opened on the second shell 32. The second adjustment structure includes a connecting piece that is sleeved in the connecting channel 3213 and positioned on the second housing 32, and a fastener that is matched and connected with the adjusting channel 3214 and the matching channel 323. The fastener can be set to be fixedly connected with one of the adjusting channel 3214 and the matching channel 323, and threadedly connected with the other of the adjusting channel 3214 and the matching channel 323. The operator can rotate the fastener to move along the adjusting channel 3214, thereby driving the second base 321 and the second synchronous guide wheel 21b to rotate around the connecting piece as a whole to approach the first base 311, or to rotate away from the first base 311, so as to adjust the preload between the positioning assembly 2 and the circular saw blade 1. In other embodiments, a first adjustment structure for adjusting the preload between the first synchronous guide wheel 21a and the circular saw blade can also be set between the first base 311 and the first housing 31. The first adjustment structure drives the first base 311 to approach or move away from the second base 321, and the preload between the positioning assembly 2 and the circular saw blade 1 can also be adjusted.

[0036] In some specific embodiments, the circular saw blade 1 is configured as a circular ring structure with a hollow circle in the middle, the sawtooth member 16 is arranged along the outer circumference of the circular ring structure, and the inner circumference of the circular ring structure is provided with a gear ring member 17 along its circumferential direction. The driving structure 4 includes a driving motor 41, a transmission housing 42 mounted on the cutting body 4, and a transmission assembly mounted in the transmission housing 42 and connected to the output end of the driving motor 41. The output end of the transmission assembly is connected to a driving wheel 44, which is arranged along the inner circumference of the circular ring structure and is meshed and connected to the gear ring member 17 through a driving tooth member 442 arranged along its circumferential direction. The driving wheel 44 can rotate around the axis of the driving wheel 44 under the drive of the driving motor 41, and drive the circular saw blade 1 to rotate around the axis of the circular saw blade 1. The driving wheel 2 is made of metal materials such as steel and iron, which has high rigidity and hardness and can withstand large loads. The circular saw blade 1 and the driving wheel 44 are meshed with each other through the rigid gear ring component 17 and the rigid driving tooth member 442. Compared with the transmission connection structure of friction transmission in the prior art, the driving wheel 44 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, so that energy consumption can be reduced, power is reduced, and practicality is strong. The two groups of positioning components 2 are arranged on both sides of the driving wheel 44 respectively, and the structural arrangement is stable. The first synchronous guide wheel 21a of each group of positioning components 2 is set to the same structure, and the second synchronous guide wheel is set to the same structure 21b. In addition, in this embodiment, the circular saw blade 1 is set to a circular ring structure with a hollow circle in the middle, which is also conducive to heat dissipation. In other embodiments, the circular saw blade 1 can also be set to a solid circle structure, which can be used to cut materials such as walls, floors, doors and windows, tiles, steel bars, concrete, etc.

[0037] In some specific embodiments, the circular saw blade 1 includes a circular ring body 18, the circular ring guide groove 11 is arranged along the side surface of the circular ring body 18, the sawtooth member 16 includes a plurality of sawtooth portions 161 protruding from the outer peripheral side wall of the circular ring body 18, and the ring gear member 17 includes a plurality of transmission tooth portions 171 protruding from the inner peripheral side wall of the circular ring body 18, and the plurality of transmission tooth portions 171 are arranged in a circle along the inner peripheral side wall of the circular ring body 18, and the circular saw blade 11 can be driven to rotate continuously in circles through the meshing transmission between the driving tooth member 442 and the transmission tooth portion 171. The circular ring body 18, the sawtooth member 16, and the ring gear member 17 are arranged on the same plane, so that the circular saw blade 1 can cut a greater depth along the plane, and the depth is greater than the spacing distance between the inner side and the outer side of the circular saw blade 1.

[0038] like Figure 4As shown, in some specific embodiments, the driving tooth member 442 is configured as a cylindrical structure arranged parallel to the axis of the driving wheel 44, so as to facilitate transmission cooperation with the transmission tooth portion 171. The driving wheel 44 also includes a wheel body 441, and the wheel body 441 is provided with a limiting groove 4410 for accommodating the inner circumference of the circular saw blade 1 from its circumferential side wall along the circumferential direction. The two sides of the limiting groove 4410 are respectively formed with a first groove wall 4411 and a second groove wall 4412, and the two ends of the driving tooth member 442 are respectively connected to the first groove wall 4411 and the second groove wall 4412, and two adjacent driving tooth members 442 are arranged at intervals to form a meshing channel 4420 for meshing and transmission connection with the transmission tooth portion 171. When the circular saw blade 1 rotates under the meshing transmission of the driving wheel 44, the inner periphery of the circular saw blade 1 is limited between the first groove wall 4411 and the second groove wall 4412, which can prevent the circular saw blade 1 from moving axially and disconnecting from the driving wheel 44 during rotation, thereby improving the stability of the circular saw blade 1 during rotation.

[0039] In some specific embodiments, a plurality of groups of connection holes for connecting the two ends of the driving tooth 442 are correspondingly provided on the first groove wall 4411 and the second groove wall 4412. One end of the driving tooth 44 extends into the connection hole of the first groove wall 4411 and is detachably connected to the first groove wall 4411, and the other end extends into the corresponding connection hole on the second groove wall 4412 and is detachably connected to the second groove wall 4412, so that each driving tooth 442 can be replaced individually. For individual worn driving teeth 442, they can be replaced, which is convenient for later maintenance and prolongs the service life of the driving wheel 44.

[0040] 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 cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0041] In conclusion, the above is only a preferred embodiment of the present invention, and 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 patent of the present invention.

Claims

1. A cutting device with a synchronous guide wheel, characterized in that: It comprises a cutting body and a circular saw blade with one end arranged in the cutting body, wherein the cutting body is provided with a positioning structure for installing the circular saw blade and a driving structure for driving the circular saw blade to rotate; The positioning structure comprises at least two groups of positioning components, the positioning components comprising a first synchronous guide wheel and a second synchronous guide wheel arranged relatively on both sides of the circular saw blade, the first and second synchronous guide wheels respectively have a first wheel body arranged coaxially and moving synchronously and a second wheel body located on the side of the first wheel body away from the center direction of the circular saw blade, the axis of at least one of the first and second synchronous guide wheels forms an angle with the plane where the circular saw blade is located, and the outer diameter of the second wheel body is greater than the outer diameter of the first wheel body; The circular saw blade is clamped and positioned between each group of relatively arranged first synchronous guide wheels and second synchronous guide wheels. When the circular saw blade rotates, it can drive the first and second synchronous guide wheels to rotate along their respective axes through friction with the outer side walls of the first and second wheel bodies.

2. The cutting device according to claim 1, characterized in that: The two side surfaces of the circular saw blade are respectively provided with a first friction ring surface arranged corresponding to the first wheel body and a second friction ring surface arranged corresponding to the second wheel body around its axis, and the radius of the second friction ring surface is greater than the radius of the first friction ring surface, and the distance between the second friction ring surface and the axis of the second wheel body is greater than the distance between the first friction ring surface and the axis of the first wheel body.

3. The cutting device according to claim 2, characterized in that: The distance between the outer wall of the first wheel body and its axis gradually increases from one end close to the center of the circular saw blade to one end far away from the center of the circular saw blade, and the distance between the outer wall of the second wheel body and its axis gradually increases from one end close to the center of the circular saw blade to one end far away from the center of the circular saw blade, and the outer diameter of the outer wall of the second wheel body close to the center of the circular saw blade is greater than or equal to the outer diameter of the outer wall of the first wheel body far away from the center of the circular saw blade.

4. The cutting device according to claim 3, characterized in that: The side surface of the circular saw blade is also provided with at least one circular guide groove around its axis, which is arranged between the first friction ring surface and the second friction ring surface. At least one fourth wheel body is also provided between the first wheel body and the second wheel body, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The outer peripheral side of the fourth wheel body protrudes from the outer peripheral sides of the first wheel body and the second wheel body, and one end of the fourth wheel body is limited in the circular guide groove, and can be guided along the movement of the fourth wheel body through the circular guide groove when the circular saw blade rotates.

5. The cutting device according to claim 4, characterized in that: The side surface of the circular saw blade is provided with at least two coaxially arranged circular guide grooves, and two adjacent circular guide grooves are arranged at intervals to form a third friction ring surface on the side surface of the circular saw blade. The corresponding fourth wheel body is coaxially provided with at least two, and a third wheel body is provided between the adjacent fourth wheel bodies, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The distance between the outer wall of the third wheel body and the axis of the third wheel body gradually increases from the end close to the center of the circular saw blade to the end away from the center of the circular saw blade. The distance between the end of the outer wall of the third wheel body close to the center of the circular saw blade and the axis of the third wheel body is greater than the distance between the end of the outer wall of the first wheel body away from the center of the circular saw blade and the axis of the first wheel body, and the distance between the end of the outer wall of the third wheel body away from the center of the circular saw blade and the axis of the third wheel body is less than the distance between the end of the outer wall of the second wheel body close to the center of the circular saw blade and the second wheel body. When the circular saw blade rotates, it can drive the corresponding first synchronous guide wheel or the second synchronous guide wheel to rotate along its axis through the friction between the third friction ring surface and the correspondingly arranged outer wall of the third wheel body.

6. The cutting device according to claim 3, characterized in that: At least one sixth wheel body is also provided between the first wheel body and the second wheel body, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The outer peripheral side of the sixth wheel body is recessed relative to the outer peripheral sides of the first and second wheel bodies, and the outer side wall of the sixth wheel body does not contact the circular saw blade.

7. The cutting device according to claim 6, characterized in that: At least two sixth wheel bodies are coaxially arranged, and a fifth wheel body is provided between two adjacent sixth wheel bodies, which is coaxially arranged with the first and second wheel bodies and moves synchronously. The distance between the outer wall of the fifth wheel body and the axis of the fifth wheel body gradually increases from the end close to the center of the circular saw blade to the end far away from the center of the circular saw blade. The distance between the end of the outer wall of the fifth wheel body close to the center of the circular saw blade and the axis of the fifth wheel body is greater than the distance between the end of the outer wall of the first wheel body far away from the center of the circular saw blade and the axis of the first wheel body, and the distance between the end of the outer wall of the fifth wheel body far away from the center of the circular saw blade and the axis of the fifth wheel body Smaller than the distance between one end of the outer wall of the second wheel body close to the center of the circular saw blade and the axis of the second wheel body, and the distance between one end of the outer wall of the fifth wheel body away from the center of the circular saw blade and the axis of the fifth wheel body is smaller than the distance between one end of the outer wall of the second wheel body close to the center of the circular saw blade and the axis of the second wheel body, and a fourth friction ring surface arranged corresponding to the fifth wheel body is also provided between the corresponding first friction ring surface and the second friction ring surface. When the circular saw blade rotates, the corresponding first synchronous guide wheel or the second synchronous guide wheel can be driven to rotate along its axis through the friction between the fourth friction ring surface and the corresponding outer wall of the fifth wheel body.

8. The cutting device according to any one of claims 2 to 7, characterized in that: The angle is 3°-7°, and the ratio of the diameter of the first wheel body to the diameter of the first friction ring surface and the ratio of the diameter of the second wheel body to the diameter of the second friction ring surface are equal or substantially equal; The wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel are arranged as an integral structure, or the wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel are relatively fixed and cannot rotate relative to each other. When the circular saw blade rotates, friction drives the wheel bodies on the same first synchronous guide wheel or the second synchronous guide wheel to rotate at the same angular velocity.

9. The cutting device according to any one of claims 1 to 7, characterized in that: The cutting body comprises a first shell and a second shell which are arranged relatively on both sides of the circular saw blade, the first shell and the second shell are detachably connected and surround each other to form an installation chamber, a first base is arranged in the first shell, the first base has a first base shaft extending along the axis direction of the first synchronous guide wheel toward a side close to the center of the circular saw blade, the first synchronous guide wheel is rotatably positioned and installed on the first base shaft, a second base is arranged in the second shell, the second base has a second base shaft extending along the axis direction of the second synchronous guide wheel toward a side close to the center of the circular saw blade, the second synchronous guide wheel is rotatably positioned and installed on the second base shaft; A first adjustment structure for adjusting the preload force between the first synchronous guide wheel and the circular saw blade is provided between the first base and the first shell, and / or a second adjustment structure for adjusting the preload force between the second synchronous guide wheel and the circular saw blade is provided between the second base and the second shell.

10. The cutting device according to any one of claims 1 to 7, characterized in that: The circular saw blade is configured as a circular ring structure with a hollow circle in the middle, the sawtooth components are arranged along the outer circumference of the circular ring structure, and the inner circumference of the circular ring structure is provided with a gear ring component along its circumferential direction, the driving structure comprises a driving motor, a transmission housing mounted on the cutting body, and a transmission assembly mounted in the transmission housing and transmission-connected to the output end of the driving motor, the output end of the transmission assembly is transmission-connected to a driving wheel, the driving wheel is arranged along the inner circumference of the circular ring structure, and is meshed and transmission-connected with the gear ring component through driving teeth arranged along its circumferential direction, and can rotate around the axis of the driving wheel under the drive of the driving motor, and drive the circular saw blade to rotate around the axis of the circular saw blade for operation; The positioning components are provided in two groups, and the two groups of positioning components are respectively arranged on both sides of the driving wheel. The first synchronous guide wheel of each group of positioning components is set to the same structure, and the second synchronous guide wheel is set to the same structure.

Images