Synchronous guide wheel positioning assembly and cutting device

Abstract

The utility model discloses a synchronous guide wheel positioning assembly and a cutting device, and the synchronous guide wheel positioning assembly is used for clamping and positioning a circular saw blade and comprises a first synchronous guide wheel and a second synchronous guide wheel, the first wheel body is coaxially arranged and moves synchronously, the second wheel body is located on the side, away from the circle center direction of the circular saw blade, of the first wheel body, the axis of at least one of the first synchronous guide wheel and the second synchronous guide wheel forms an included angle with the plane space, and the outer diameter of the second wheel body is larger than that of the first wheel body. When the circular saw blade is arranged in the plane space, one side of the circular saw blade abuts against the first wheel body and the second wheel body of the first synchronous guide wheel, and the other side of the circular saw blade abuts against the first wheel body and the second wheel body of the second synchronous guide wheel for clamping and positioning. Extra energy consumption is reduced, power is reduced, and the service life of the synchronous guide wheel and the service life of the circular saw blade are prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting device field especially, it relates to a synchronous guide pulley positioning assembly and cutting device. BACKGROUND

[0002] The cutting device is mainly used for cutting treatment of wall surface, ground, door and window, ceramic tile, reinforcing bar, concrete and other materials on the construction site.

[0003] The existing cutting device, such as the utility model patent (announcement number: CN220903778U) with a limiting stable mechanism's water-cooled type ring saw, mainly includes saw blade protective cover, the ring saw blade of one end through adjusting mechanism installation positioning in saw blade protective cover and the driving mechanism for driving ring saw blade rotation, wherein, its adjusting mechanism includes four positioning guide pulleys symmetrically arranged at the both sides of ring saw blade, four positioning guide pulleys are arranged in parallel with ring saw blade respectively, and are arranged as cylindrical structure of integral structure, ring saw blade is clamped between four positioning guide pulleys, and ring saw blade rotates and drives positioning guide pulley to rotate through the friction with each positioning guide pulley.The technical scheme in this technical scheme, because the circumference of the inner circle and the outer circle of the ring saw blade is different, that is to say, the angular velocity of the inner circle and the outer circle of the ring saw blade is the same but the linear velocity is different, so that when the positioning guide pulley rotates with the ring saw blade, the friction between the side close to the center of the ring saw blade and the inner circle of the ring saw blade and the rolling friction between the side away from the center of the ring saw blade and the outer circle of the ring saw blade generates a speed difference, and the positioning guide pulley is arranged as an integral structure, so that a sliding friction force is generated between the positioning guide pulley and the ring saw blade, forming a large friction loss, the extra energy consumption is large, the power is large, and the wear of the positioning guide pulley and the ring saw blade is large, and the service life is short. SUMMARY

[0004] The utility model discloses in view of the deficiency in prior art, provide a synchronous guide pulley positioning assembly and cutting device, the synchronous guide pulley positioning assembly is used for the clamping positioning of circular saw blade, including first synchronous guide pulley and second synchronous guide pulley, first synchronous guide pulley is arranged on one side of the circular saw blade through first base installation, and second synchronous guide pulley is arranged on the other side of the circular saw blade through second base installation and is opposite arrangement with first synchronous guide pulley, and the plane space for arranging circular saw blade is formed between second synchronous guide pulley and first synchronous guide pulley, first, second synchronous guide pulley respectively have coaxial arrangement and synchronous movement's first wheel body and the second wheel body in the first wheel body direction away from the center of circular saw blade one side, the axis of at least one of first, second synchronous guide pulley forms the angle with plane space and the outer diameter of its second wheel body is greater than the outer diameter of first wheel body, when the circular saw blade is arranged in plane space, and is clamped and positioned through one side and the first wheel body and the second wheel body of first synchronous guide pulley abut, the other side and the first wheel body and the second wheel body of second synchronous guide pulley abut.

[0005] Preferably, the first base has a first mounting shaft coaxially arranged with the first synchronous guide wheel, the first synchronous guide wheel is rotatably mounted on the first mounting shaft, the second base has a second mounting shaft coaxially arranged with the second synchronous guide wheel, the second synchronous guide wheel is rotatably mounted on the second mounting shaft, and the circular saw blade frictionally drives the first synchronous guide wheel to rotate around the first mounting shaft and the second synchronous guide wheel to rotate around the second mounting shaft when the circular saw blade rotates in the planar space.

[0006] Preferably, the distance between the first mounting shaft and the end of the second wheel body outer side wall of the first synchronous guide wheel close to the center direction of the circular saw blade is greater than or equal to the distance between the first mounting shaft and the end of the first wheel body outer side wall away from the center direction of the circular saw blade, and the distance between the first mounting shaft and the first wheel body outer side wall gradually increases from the end close to the center direction of the circular saw blade to the end away from the center direction of the circular saw blade, and the distance between the second mounting shaft and the second wheel body outer side wall gradually increases from the end close to the center direction of the circular saw blade to the end away from the center direction of the circular saw blade.

[0007] Preferably, the first synchronous guide wheel further comprises at least one fourth wheel body arranged between the first wheel body and the second wheel body, the fourth wheel body is coaxially arranged with the first and second wheel bodies and moves synchronously, and the outer peripheral side of the fourth wheel body protrudes beyond the outer peripheral sides of the first and second wheel bodies and is arranged to extend into the circular ring guide rail groove arranged on the side surface of the circular saw blade for positioning and guiding.

[0008] Preferably, the fourth wheel body is coaxially provided with at least two fourth wheel bodies, a third wheel body coaxially arranged with the first and second wheel bodies and moving synchronously is arranged between the adjacent two fourth wheel bodies, the distance between the third wheel body outer side wall and the first mounting shaft gradually increases from the end close to the center direction of the circular saw blade to the end away from the center direction of the circular saw blade, the distance between the end of the third wheel body outer side wall close to the center direction of the circular saw blade and the first mounting shaft is greater than the distance between the end of the first wheel body outer side wall away from the center direction of the circular saw blade and the first mounting shaft, and the distance between the end of the third wheel body outer side wall away from the center direction of the circular saw blade and the first mounting shaft is less than the distance between the end of the second wheel body outer side wall close to the center direction of the circular saw blade and the first mounting shaft.

[0009] Preferably, the distance between the second mounting shaft and the end of the second wheel body outer side wall of the second synchronous guide wheel close to the center direction of the circular saw blade is greater than or equal to the distance between the second mounting shaft and the end of the first wheel body outer side wall away from the center direction of the circular saw blade, and the distance between the first mounting shaft and the first wheel body outer side wall gradually increases from the end close to the center direction of the circular saw blade to the end away from the center direction of the circular saw blade, and the distance between the second mounting shaft and the second wheel body outer side wall gradually increases from the end close to the center direction of the circular saw blade to the end away from the center direction of the circular saw blade.

[0010] Preferably, the second synchronous guide wheel further comprises at least two sixth wheel bodies arranged between the first wheel body and the second wheel body, the sixth wheel bodies are coaxially arranged with the first and second wheel bodies and synchronously move, and the outer circumferential side of the sixth wheel body is recessed relative to the outer circumferential side of the first and second wheel bodies, a fifth wheel body coaxially arranged with the first and second wheel bodies and synchronously moving is arranged between two adjacent sixth wheel bodies, the distance between the outer side wall of the fifth wheel body and the second mounting shaft gradually increases from one end close to the center direction of the circular saw blade to one end away from the center direction of the circular saw blade, the distance between the one end close to the center direction of the circular saw blade on the outer side wall of the fifth wheel body and the second mounting shaft is greater than the distance between the one end away from the center direction of the circular saw blade on the outer side wall of the first wheel body and the second mounting shaft, and the distance between the one end away from the center direction of the circular saw blade on the outer side wall of the fifth wheel body and the second mounting shaft is less than the distance between the one end close to the center direction of the circular saw blade on the outer side wall of the second wheel body and the second mounting shaft.

[0011] Preferably, the included angle is 3°-7°; the wheel bodies on the first synchronous guide wheel or the second synchronous guide wheel are connected in an integral structure, or are relatively fixed and cannot rotate relative to each other, and the angular velocity of the wheel bodies on the first synchronous guide wheel or the second synchronous guide wheel driven by the circular saw blade during rotation operation is the same.

[0012] The utility model further provides a cutting device, including cutting main part, install at least two groups above-mentioned synchronous guide wheel positioning subassembly of cutting main part, clamping positioning between each group first synchronous guide wheel and second synchronous guide wheel circular saw blade and install driving structure on cutting main part, the driving structure is transmission connection with circular saw blade, is used for driving circular saw blade rotation operation.

[0013] Preferably, the first base and the cutting main body are movably connected through a first adjusting structure, the first adjusting structure adjusts the thickness of the planar space by driving the first base to move closer to or away from the second base; or, the second base and the cutting main body are connected through a second adjusting structure, the second adjusting structure adjusts the thickness of the planar space by driving the second base to move closer to or away from the first base.

[0014] The synchronous guide wheel positioning assembly provided by the utility model forms an included angle with the plane space with at least one of the first synchronous guide wheel and the second synchronous guide wheel, 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 synchronous guide wheel and the second synchronous guide wheel 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, when 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 abutting against the first wheel body and the second wheel body of the second synchronous guide wheel on the other side, the second wheel body and the first wheel body arranged at an included angle with the circular saw blade rotate under the friction of the circular saw blade, although the angular velocities are the same, the linear velocity of the rotation of the second wheel body is larger than the linear velocity of the rotation of the first wheel body, the structure of the circular saw blade is more suitable, the rolling friction force between the second wheel body and the outer circle of the circular saw blade is more synchronous with the rolling friction force between the first wheel body and the inner circle of the circular saw blade, the sliding friction loss between the synchronous guide wheel and the circular saw blade is reduced, the additional energy consumption is reduced, the power is reduced, and the service life of the synchronous guide wheel and the circular saw blade is prolonged.

[0015] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the utility model, constitute a part of the present application, the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0017] Figure 1 It is the cross-sectional structure schematic view of the synchronous guide wheel positioning assembly of an embodiment of the utility model.

[0018] Figure 2 It is the structure schematic view of the synchronous guide wheel positioning assembly and the circular saw blade of an embodiment of the utility model.

[0019] Figure 3 It is the structure schematic view of the cutting device of an embodiment of the utility model. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme of the embodiment of the utility model will be clearly and completely described below in combination with the drawings of the embodiment of the utility model. Apparently, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] In the description of the utility model, need understanding is, the orientation or position relation that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate is based on the orientation or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, is constructed and operated with a particular orientation, therefore can not be understood as the limitation of the utility model.

[0022] In the utility model, unless another explicit provision and limitation, the terms "installation", "connection", "connect", "fix" and the like terms should be broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection, can be electrical connection;It can be directly connected, can be indirectly connected through intermediate medium, can be the intercommunication of two elements.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0023] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, can also include that the first and second features are not in direct contact, but contact through another feature between them.Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than the second feature.The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than the second feature.

[0024] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning of the person skilled in the art to which the utility model belongs.The "first", "second" and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are only used to distinguish different components.Similarly, "one" or "a" and similar words do not represent quantity limitation, but represent the existence of at least one.

[0025] As Figure 1 , 2As shown, as an embodiment of the utility model, provide a kind of synchronous guide wheel positioning assembly 2, for the clamping positioning of circular saw blade 1.The synchronous guide wheel positioning assembly 2 includes first synchronous guide wheel 21a and second synchronous guide wheel 21b, wherein, first synchronous guide wheel 21a is arranged on one side of circular saw blade 1 by first pedestal 22a installation, second synchronous guide wheel 21b is arranged on the other side of circular saw blade 1 by second pedestal 22b installation, and it is arranged opposite first synchronous guide wheel 21a, and the plane space for arranging circular saw blade 1 is formed between second synchronous guide wheel 21b and first synchronous guide wheel 21a.First, second synchronous guide wheel has coaxially arranged and synchronous motion first wheel body 211 and second wheel body 212 located in the direction of first wheel body 211 away from the center of circular saw blade 1 side, the axis of first, second synchronous guide wheel forms angle A with plane space and the outer diameter of its second wheel body 212 is greater than the outer diameter of first wheel body 211, when circular saw blade 1 is arranged in plane space, it is clamped and positioned by one side and the first wheel body 211 and second wheel body 212 of first synchronous guide wheel 21a abut, the other side and the first wheel body 211 and second wheel body 212 of second synchronous guide wheel 21b abut.In the embodiment, since the axis of first, second synchronous guide wheel forms angle A with plane space and the outer diameter of its second wheel body 212 is greater than the outer diameter of first wheel body 211, that is, first, second synchronous guide wheel is arranged at angle with circular saw blade 1 respectively and the circumference of its second wheel body 212 is greater than the circumference of first wheel body 211, since circular saw blade 1 is arranged in plane space, it is clamped and positioned by one side and the first wheel body 211 and second wheel body 212 of first synchronous guide wheel 21a abut, the other side and the first wheel body 211 and second wheel body 212 of second synchronous guide wheel 21b abut, therefore, the second wheel body 212 and first wheel body 211 arranged at angle with circular saw blade 1 rotate under the friction of circular saw blade 1, although angular velocity is same, but the linear speed of the rotation of the second wheel body 212 is greater than the linear speed of the rotation of first wheel body 211, more compatible with the structure of circular saw blade 1, so that the rolling friction between second wheel body 212 and outer circle of circular saw blade 1 and the rolling friction between first wheel body 211 and inner circle of circular saw blade 1 are more synchronous, thereby reducing the sliding friction loss between first, second synchronous guide wheel and circular saw blade 1, reduce additional energy consumption, reduce power, and prolong the service life of first, second synchronous guide wheel and circular saw blade.In this embodiment, the first synchronous guide wheel 21a and the second synchronous guide wheel 21b are both arranged to form an angle A with the plane space along the axis, and the outer diameter of the second wheel body 212 is greater than the outer diameter of the first wheel body 211. This structure 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. In other embodiments, only one of the first synchronous guide wheel 21a and the second synchronous guide wheel 21b can be arranged to form an angle A with the plane space along the axis, and the outer diameter of the second wheel body 212 is greater than the outer diameter of the first wheel body 211. This structure is used to reduce the sliding friction loss between the one synchronous guide wheel and one side surface of the circular saw blade 1.

[0026] In some specific embodiments, the first base 22a has a first mounting shaft 221a coaxially arranged with the first synchronous guide wheel 21a. The first mounting shaft 221a is arranged along the axis direction of the first synchronous guide wheel 21a and forms an angle A with the circular saw blade 1. The first synchronous guide wheel 21a is positioned and fixed on the first mounting shaft 221a by a fastening structure (not shown in the figure) such as a nut, and is rotatably sleeved outside the first mounting shaft 221a or rotatably sleeved outside the first mounting shaft 221a through a bearing piece. The second base 22a has a second mounting shaft 221b coaxially arranged with the second synchronous guide wheel 21b. The second mounting shaft 221b is arranged along the axis direction of the second synchronous guide wheel 21b and forms an angle A with the circular saw blade 1. The second synchronous guide wheel 21b is positioned and fixed on the second mounting shaft 221b by a fastening structure (not shown in the figure) such as a nut, and is rotatably sleeved outside the second mounting shaft 221b or rotatably sleeved outside the second mounting shaft 221b through a bearing piece. When the circular saw blade 1 rotates in the plane space, it drives the first synchronous guide wheel 21a to rotate around the first mounting shaft 221a and the second synchronous guide wheel 21b to rotate around the second mounting shaft 221b.

[0027] In some embodiments, the distance between the outer side wall of the second wheel body 212 of the first synchronous guide wheel 21a and the first mounting shaft 221a near the end of the circular saw blade 1 in the direction of the center is greater than or equal to the distance between the outer side wall of the first wheel body 211 and the first mounting shaft 221a away from the end of the circular saw blade 1 in the direction of the center, and the distance between the outer side wall of the first wheel body 211 and the first mounting shaft 221a gradually increases from the end near the center of the circular saw blade 1 to the end away from the center of the circular saw blade 1, and the distance between the outer side wall of the second wheel body 212 and the first mounting shaft 221a gradually increases from the end near the center of the circular saw blade 1 to the 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 spaced apart or connected to each other, which can respectively make face-to-face contact with the side surface of the circular saw blade 1 during the rotation operation of the circular saw blade 1, disperse the stress surface during friction, and reduce the wear on the side surface of the first synchronous guide wheel 21a or the circular saw blade 1.

[0028] In some embodiments, the first synchronous guide wheel 21a further comprises two fourth wheel bodies 214 arranged between the first wheel body 211 and the second wheel body 212, each fourth wheel body 214 is coaxially arranged with the first and second wheel bodies and moves synchronously, and the outer circumferential side of the fourth wheel body 214 protrudes from the outer circumferential side of the first wheel body 211 and the second wheel body 212, used to extend into the circular ring guide rail groove 11 arranged on the side surface of the circular saw blade 1 for positioning and guiding, preventing the circular saw blade 1 from falling off the synchronous guide wheel positioning assembly 2 during rotation, and improving safety during use. A third wheel body 213 coaxially arranged with the first and second wheel bodies and moving synchronously is arranged between the two fourth wheel bodies 214, the distance between the outer side wall of the third wheel body 213 and the first mounting shaft 221a 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, the distance between the one end close to the center of the circular saw blade 1 of the outer side wall of the third wheel body 213 and the first mounting shaft 221a is greater than the distance between the one end away from the center of the circular saw blade 1 of the outer side wall of the first wheel body 211 and the first mounting shaft 221a, and the distance between the one end away from the center of the circular saw blade 1 of the outer side wall of the third wheel body 213 and the first mounting shaft 221a is less than the distance between the one end close to the center of the circular saw blade 1 of the outer side wall of the second wheel body 212 and the first mounting shaft 221a, which is adapted to the structure of the circular saw blade 1. The third wheel body 213 of the first synchronous guide wheel 21a, the side surface of the second wheel body 212 and the first wheel body 211 are arranged on the same conical surface and are spaced apart, which can respectively make face-to-face contact with the side surface of the circular saw blade 1 during the rotation of the circular saw blade 1, further dispersing the stress surface during friction, and reducing the wear on the side surface of the first synchronous guide wheel 21a or the circular saw blade 1. In other embodiments, only one fourth wheel body 214 can be arranged between the first wheel body 211 and the second wheel body 212, in which case the third wheel body 213 is not required, or a larger number of fourth wheel bodies 214 can be arranged between the first wheel body 211 and the second wheel body 212, in which case the third wheel body 213 can be arranged between two adjacent fourth wheel bodies 214.

[0029] Similarly, the distance between the outer side wall of the second wheel body 212 of the second synchronous guide wheel 21b close to the end of the circular saw blade 1 in the direction of the center and the second mounting shaft 221b is greater than or equal to the distance between the outer side wall of the first wheel body 211 away from the end of the circular saw blade 1 in the direction of the center and the second mounting shaft 221b, and the distance between the outer side wall of the first wheel body 211 and the second mounting shaft 221b 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, and the distance between the outer side wall of the second wheel body 212 and the second mounting shaft 221b 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, 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 second synchronous guide wheel 21b are arranged on the same conical surface and are spaced apart or connected to each other, which can respectively make face-to-face contact with the side surface of the circular saw blade 1 during the rotation operation of the circular saw blade 1, disperse the stress surface during friction, and reduce the wear on the other side surface of the second synchronous guide wheel 21b or the circular saw blade 1.

[0030] The second synchronous guide wheel 21b further comprises two sixth wheel bodies 216 arranged between the first wheel body 211 and the second wheel body 212, each sixth wheel body 216 is coaxially arranged with the first wheel body and the second wheel body and moves synchronously, and the outer circumferential side of the sixth wheel body 216 is recessed relative to the outer circumferential sides of the first wheel body 211 and the second wheel body 212, facilitating heat dissipation. A fifth wheel body 215 coaxially arranged with the first wheel body and the second wheel body and moving synchronously is arranged between the two sixth wheel bodies 216, the distance between the outer side wall of the fifth wheel body 215 and the second mounting shaft 221b gradually increases from one end close to the center direction of the circular saw blade 1 to one end away from the center direction of the circular saw blade 1, the distance between the one end close to the center direction of the circular saw blade 1 on the outer side wall of the fifth wheel body 215 and the second mounting shaft 221b is greater than the distance between the one end away from the center direction of the circular saw blade 1 on the outer side wall of the first wheel body 211 and the second mounting shaft 221b, and the distance between the one end away from the center direction of the circular saw blade 1 on the outer side wall of the fifth wheel body 215 and the second mounting shaft 221b is less than the distance between the one end close to the center direction of the circular saw blade 1 on the outer side wall of the second wheel body 212 and the second mounting shaft 221b, and the distance between the one end away from the center direction of the circular saw blade 1 on the outer side wall of the fifth wheel body 215 and the second mounting shaft 221b is less than the distance between the one end close to the center direction of the circular saw blade 1 on the outer side wall of the second wheel body 212 and the second mounting shaft 221b, which is adapted to the structure of the circular saw blade 1. The fifth wheel body 215 of the second synchronous guide wheel 21b, the side surface of the second wheel body 212 and the side surface of the first wheel body 211 are arranged on the same conical surface and are spaced apart from each other, and can respectively make face-to-face contact with the side surface of the circular saw blade 1 during the rotation operation of the circular saw blade 1, further dispersing the stress surface during friction, reducing the wear of the other side surface of the second synchronous guide wheel 21b or the circular saw blade 1. In other embodiments, only one sixth wheel body 216 can be arranged between the first wheel body 211 and the second wheel body 212, in which case the fifth wheel body 215 is not required, or a larger number of sixth wheel bodies 216 can be arranged between the first wheel body 211 and the second wheel body 212, in which case the fifth wheel body 215 can be arranged between two adjacent sixth wheel bodies 216.

[0031] In some embodiments, the side surface of the circular saw blade 1 has a first friction ring surface 12 for mutual friction with the first wheel body 211, and a second friction ring surface 13 for mutual friction with the second wheel body 212, the second friction ring surface 13 is arranged outside the first friction ring surface 12, and the circumference of the second friction ring surface 13 is greater than the circumference of the first friction ring surface 12, wherein the ratio of the diameter of the corresponding arranged second friction ring surface 13 and 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 and the diameter of the first wheel body 211, that is, the ratio of the circumference of the second friction ring surface 13 and 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 and the circumference of the first wheel body 211, to ensure that the rolling friction between the second wheel body 212 and the second friction ring surface 13 and the rolling friction between the first wheel body 211 and the first friction ring surface 12 are more synchronized, thereby reducing the sliding friction loss between the synchronous guide wheel and the circular saw blade, reducing additional energy consumption, reducing power, and prolonging the service life of the synchronous guide wheel and the circular saw blade. Since the diameters of the first friction ring surface 12 and the second friction ring surface 13 of most cutting devices on the market are generally set to about 30 cm and about 50 cm respectively, in the present embodiment, the included 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 included angle can also be configured according to the specifications of the cutting device.

[0032] In some embodiments, the wheel bodies on the first synchronous guide wheel 21a and the second synchronous guide wheel 21b are arranged in an integrated structure, which is stable and reliable, so that the angular velocity of the wheel bodies on the first synchronous guide wheel 21a and the second synchronous guide wheel 21b driven by the circular saw blade 1 during rotation is the same. In other embodiments, the wheel bodies on the same first synchronous guide wheel 21a or second synchronous guide wheel 21b can also be arranged as independent structures, and the wheel bodies are connected in a manner that they are relatively fixed and cannot rotate relative to each other, which can also make the angular velocity of the wheel bodies on the first synchronous guide wheel 21a and the second synchronous guide wheel 21b driven by the circular saw blade 1 during rotation the same.

[0033] As Figure 3As shown, as another embodiment of the utility model, also provide a cutting device, including cutting main body 3, install two groups of above-mentioned synchronous guide pulley positioning assembly 2 on cutting main body 3, the circular saw blade 1 of clamping positioning between each group first synchronous guide pulley 21a and second synchronous guide pulley 21b, and drive structure 4 installed on cutting main body 3, drive structure 4 is transmission connection with circular saw blade 1, for driving circular saw blade 1 rotation operation.The cutting device in this embodiment, because adopt the synchronous guide pulley positioning assembly 2 provided by the utility model, therefore can also reduce the sliding friction loss between synchronous guide pulley and circular saw blade 1, reduce additional energy consumption, reduce power, and prolong the service life of synchronous guide pulley and circular saw blade.In other embodiments, the synchronous guide pulley positioning assembly 2 can also be set more groups to improve the stability of the positioning of circular saw blade 1.

[0034] In some specific embodiments, the second base 22b is connected between the cutting main body 3 through the second adjusting structure (not shown in the figure), the second adjusting structure can adjust the thickness of the plane space by driving the second base 22b to approach or move away from the first base 22a, so as to adjust the pre-tightening force between the synchronous guide pulley positioning assembly 2 and the circular saw blade 1, optionally, the second base 22b is protrudingly provided with adjusting piece one 222 and adjusting piece two 223 on both sides, respectively, the adjusting piece one 222 is provided with a connecting channel 2221 arranged in parallel with the axial direction of the mounting shaft 221b, the adjusting piece two 223 is provided with an adjusting channel 2231 arranged in parallel with the radial direction of the mounting shaft 221b, and the cutting main body 3 is provided with a matching channel 31 arranged correspondingly with the adjusting channel 2231. The second adjusting structure includes a connecting piece sleeved in the connecting channel 2221 and positioned and mounted on the cutting main body 3, and a fastener connected with the adjusting channel 2231 and the matching channel 31, the fastener can be fixedly connected with one of the adjusting channel 2231 and the matching channel 31, and threadedly connected with the other one of the adjusting channel 2231 and the matching channel 31, the operator can make the fastener move along the adjusting channel 2231 by operating the fastener to rotate, so as to drive the second base 22b and the second synchronous guide pulley 21b to rotate as a whole around the connecting piece to approach the first base 22a or rotate to move away from the first base 22a, so as to adjust the pre-tightening force between the synchronous guide pulley positioning assembly 2 and the circular saw blade 1. In other embodiments, the first base 22a can also be movably connected with the cutting main body 3 through the first adjusting structure, the first base 22a can also be adjusted to approach or move away from the second base 22b through the first adjusting structure, so as to adjust the thickness of the plane space, thereby adjusting the pre-tightening force between the synchronous guide pulley positioning assembly 2 and the circular saw blade 1.

[0035] In some embodiments, the circular saw blade 1 is arranged in a circular ring structure, and the hollow circular saw blade 1 is beneficial to heat dissipation; in other embodiments, the circular saw blade 1 can also be arranged in a solid circular structure, and can be used for cutting wall surfaces, floors, doors and windows, ceramic tiles, steel bars, concrete and other materials.

[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0037] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the patent application of the present application shall be included in the scope of the patent of the present application.

Claims

1. A synchronous guide wheel positioning assembly for clamping and positioning a circular saw blade, characterized in that: include: A first synchronous guide wheel is mounted on one side of the circular saw blade through a first base; a second synchronous guide wheel, mounted on the other side of the circular saw blade via a second base and arranged opposite to the first synchronous guide wheel, with a planar space for arranging the circular saw blade formed between the second synchronous guide wheel and the first synchronous guide wheel; The first and second synchronous guide wheels respectively have 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 axis of at least one of the first and second synchronous guide wheels forms an angle with the plane space and the outer diameter of its second wheel body is larger than the outer diameter of the first wheel body. When the circular saw blade is arranged in the plane space, it 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 abutting against the first wheel body and the second wheel body of the second synchronous guide wheel on the other side.

2. The synchronous guide wheel positioning assembly according to claim 1, characterized in that: The first base has a first mounting shaft coaxially arranged with the first synchronous guide wheel, and the first synchronous guide wheel is rotatably mounted on the first mounting shaft. The second base has a second mounting shaft coaxially arranged with the second synchronous guide wheel, and the second synchronous guide wheel is rotatably mounted on the second mounting shaft. When the circular saw blade rotates in a plane space, friction drives the first synchronous guide wheel to rotate around the first mounting shaft and the second synchronous guide wheel to rotate around the second mounting shaft.

3. The synchronous guide wheel positioning assembly according to claim 2, characterized in that: The distance between the end of the outer wall of the second wheel body of the first synchronous guide wheel close to the center of the circular saw blade and the first mounting axis is greater than or equal to 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 first mounting axis, and the distance between the outer wall of the first wheel body and the first mounting axis 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, and the distance between the outer wall of the second wheel body and the first mounting axis 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.

4. The synchronous guide wheel positioning assembly according to claim 3, characterized in that: The first synchronous guide wheel also includes at least one fourth wheel body arranged between the first wheel body and the second wheel body. The fourth wheel body is coaxially arranged with the first and second wheel bodies and moves synchronously, and the outer peripheral side of the fourth wheel body protrudes from the outer peripheral side of the first wheel body and the second wheel body, and is used to extend into the circular guide rail groove correspondingly arranged on the side surface of the circular saw blade for limiting and guiding.

5. The synchronous guide wheel positioning assembly according to claim 4, characterized in that: At least two fourth wheel bodies are coaxially arranged, and a third wheel body is provided between two 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 first mounting axis 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 first mounting axis 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 first mounting axis, 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 first mounting axis 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 first mounting axis.

6. The synchronous guide wheel positioning assembly according to any one of claims 2 to 5, characterized in that: The distance between the end of the outer wall of the second wheel body of the second synchronous guide wheel close to the center of the circular saw blade and the second mounting axis is greater than or equal to 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 second mounting axis, and the distance between the outer wall of the first wheel body and the second mounting axis 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, and the distance between the outer wall of the second wheel body and the second mounting axis 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.

7. The synchronous guide wheel positioning assembly according to claim 6, characterized in that: The second synchronous guide wheel also includes at least two sixth wheel bodies arranged between the first wheel body and the second wheel body, the sixth wheel body being coaxially arranged with the first and second wheel bodies and moving synchronously, and the outer peripheral side of the sixth wheel body is recessed relative to the peripheral side of the first wheel body and the second wheel body, and a fifth wheel body is provided between the two adjacent sixth wheel bodies, which is coaxially arranged with the first and second wheel bodies and moving synchronously. The distance between the outer side wall of the fifth wheel body and the second mounting axis gradually increases from one end close to the center direction of the circular saw blade to one end away from the center direction of the circular saw blade, and the distance between the end of the outer side wall of the fifth wheel body close to the center direction of the circular saw blade and the second mounting axis is greater than the distance between the end of the outer side wall of the first wheel body away from the center direction of the circular saw blade and the second mounting axis, and the distance between the end of the outer side wall of the fifth wheel body away from the center direction of the circular saw blade and the second mounting axis is less than the distance between the end of the outer side wall of the second wheel body close to the center direction of the circular saw blade and the second mounting axis.

8. The synchronous guide wheel positioning assembly according to any one of claims 1 to 5, characterized in that: The angle is set to 3°-7°; The wheel bodies on the 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 first synchronous guide wheel or the second synchronous guide wheel to rotate at the same angular velocity.

9. A cutting device, characterized in that: It includes a cutting body, at least two groups of synchronous guide wheel positioning assemblies as described in any one of claims 1 to 8 installed on the cutting body, a circular saw blade clamped and positioned between each group of first synchronous guide wheels and second synchronous guide wheels, and a driving structure installed on the cutting body, wherein the driving structure is connected to the circular saw blade for driving the circular saw blade to rotate.

10. The cutting device according to claim 9, characterized in that: The first base is movably connected to the cutting body via a first adjusting structure, and the first adjusting structure adjusts the thickness of the plane space by driving the first base closer to or farther away from the second base; or The second base is connected to the cutting body via a second adjusting structure, and the second adjusting structure adjusts the thickness of the plane space by driving the second base to move closer to or farther away from the first base.

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