Novel trephine

Abstract

The utility model relates to a trephine, in particular to a novel trephine which comprises a rack, a trephine body, a driving mechanism and an installation mechanism, the installation mechanism is arranged on the rack and comprises two installation wheels, the trephine body is installed on the rack through the installation mechanism, and the trephine body is located between the two installation wheels and matched with the two installation wheels in an abutting mode. The inner end face of the trephine is arranged to be a tooth transmission edge, the driving mechanism comprises a driving part, a transmission shaft, a transmission gear and friction wheels, the transmission shaft is provided with the two friction wheels, the transmission gear is arranged on the transmission shaft in a sleeving mode, the transmission gear is arranged between the two friction wheels and abuts against the two friction wheels, and the transmission gear is in transmission fit with the inner end face of the trephine. The transmission shaft drives the transmission gear to rotate by driving the two friction wheels to rotate so as to drive the trephine to rotate, when the trephine is stuck, the transmission relation between the transmission gear and the transmission shaft is broken, and the situation that the transmission shaft, a driving part and other parts are damaged due to locking is avoided.

Description

Technical Field

[0001] This utility model relates to a ring saw, specifically a novel ring saw. Background Technology

[0002] To prevent saw blade seizure and subsequent component damage, existing ring saws utilize friction between the drive wheel and the ring saw for transmission. The drive wheel rotates, driving the ring saw. To ensure stable transmission between the ring saw and the drive wheel, they need to be tightly pressed together. This can easily lead to positional misalignment of the ring saw, and over time, both the drive wheel and the ring saw will wear down. To address this issue, existing ring saws use mounting limit wheels that can move axially, supported by springs or other elastic components. However, prolonged use of the ring saw generates significant heat, affecting the elasticity and deformation of these components, necessitating periodic calibration of the ring saw's mounting position. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a new type of ring saw that uses gear transmission to drive the ring saw to rotate. There is no need for squeezing and fitting between the drive gear and the ring saw, resulting in less wear and avoiding positional displacement of the ring saw. This allows for a more reasonable structure and installation method for the mounting limit wheel, reducing the calibration frequency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a novel ring saw, including a frame, a ring saw, a drive mechanism, and a mounting mechanism. The drive mechanism is mounted on the frame and includes a drive component, a transmission shaft, a transmission gear, and friction wheels. Two friction wheels are mounted on the transmission shaft, and the transmission gear is mounted on the transmission shaft, positioned between and in contact with the two friction wheels. The drive shaft drives the transmission shaft to rotate and, through the two friction wheels, drives the transmission gear to rotate. The inner end face of the ring saw is configured as a toothed transmission edge. The ring saw is mounted on the frame, and its inner end face engages with the transmission gear. The frame is equipped with a mounting mechanism, which includes two mounting wheels. The two mounting wheels are located on both sides of the ring saw and abut against the side end faces of the ring saw. Limiting protrusions are provided circumferentially on the mounting wheels, and limiting grooves are provided circumferentially on the side end faces of the ring saw. The rotation of the ring saw drives the mounting wheels to rotate, and the limiting protrusions engage with the limiting grooves. The drive mechanism and the ring saw are connected by gear transmission, and the drive shaft and the drive gear of the drive mechanism transmit power through two friction wheels to prevent the drive mechanism from seizing and being damaged. Since the ring saw and the drive mechanism are connected by gear transmission, the position of the ring saw will not change. Therefore, the ring saw can be installed using a simpler and more reasonable installation mechanism.

[0005] As an optional technical solution for this utility model, at least two mounting mechanisms are provided on the frame along the circumference of the ring saw. Using multiple mounting mechanisms can improve the stability of the ring saw.

[0006] As an optional technical solution of the utility model, the installation mechanism further includes a first installation cylinder and a second installation cylinder. The first installation cylinder and the second installation cylinder are mounted on the frame. A first installation component is provided inside the first installation cylinder. The first installation component extends out of the first installation cylinder and is provided with a first installation wheel. A second installation component is provided inside the second installation cylinder. The second installation component extends out of the second installation cylinder and is provided with a second installation wheel. The central axis of the second installation wheel does not coincide with that of the second installation cylinder. The second installation component rotates relative to the second installation cylinder and drives the second installation wheel to move between the installation position and the disassembly position.

[0007] As an optional technical solution of the utility model, the second mounting component is provided with a rotating handle, which extends out of the second mounting cylinder.

[0008] As an optional technical solution of the utility model, the end of the transmission shaft is provided with a threaded hole, the two friction wheels are respectively a first friction wheel and a second friction wheel, the first friction wheel is provided with a first mounting hole, the first mounting hole is provided with a threaded connector, the first friction wheel is provided at the end of the transmission shaft and the threaded connector is connected to the threaded hole; the transmission shaft is provided with a top support, the second friction wheel is provided with a second mounting hole, and the second friction wheel is fitted on the transmission shaft and abuts against the top support.

[0009] As an optional technical solution for the utility model, the drive mechanism also includes a limiting ring, which is fitted on the transmission shaft and within the installation gap. The limiting ring and the first friction wheel are an integral structure, and the transmission gear is fitted on the outside of the limiting ring.

[0010] As an optional technical solution of the utility model, the drive mechanism also includes a housing, which is connected to the frame and has a handrail. The drive component is disposed inside the housing, and the power output part of the drive component is connected to the transmission shaft, and the drive component drives the transmission shaft to rotate.

[0011] Compared with the prior art, the advantages of this utility model are as follows: 1. The drive mechanism drives the ring saw to rotate through gear transmission. The parts of the drive mechanism that directly contact the ring saw transmission do not experience excessive wear and do not require frequent adjustment of the ring saw position. Therefore, the ring saw can be installed using a simpler and more reasonable installation mechanism that does not require axial movement adjustment, reducing the difficulty and frequency of disassembly and maintenance; 2. Two friction wheels are set on the drive shaft of the drive mechanism. The transmission gear is between and in contact with the two friction wheels. The transmission between the drive shaft and the transmission gear is achieved through the friction effect between the transmission gear and the two friction wheels. When the ring saw jams, the transmission gear also jams, and the transmission relationship between the transmission gear and the drive shaft is broken. The rotation of the drive shaft only drives the friction wheels to rotate, avoiding damage to the drive shaft and drive components caused by the ring saw jamming. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the new type of ring saw;

[0014] Figure 2 for Figure 1 Structural diagram omitting the ring saw and part of the frame;

[0015] Figure 3 for Figure 2 Structural diagram omitting the frame and housing;

[0016] Figure 4 This is a partial structural diagram of the drive mechanism;

[0017] In the diagram: 1. Frame, 2. Ring saw, 3. Drive mechanism, 31. Drive component, 32. Drive shaft, 33. Drive gear, 34. First friction wheel, 35. Second friction wheel, 36. Top support, 37. Limiting ring, 38. Housing, 4. Mounting mechanism, 41. First mounting component, 42. First mounting wheel, 43. Second mounting component, 44. Second mounting wheel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0019] like Figures 1-4 As shown, a novel ring saw includes a frame 1, a ring saw 2, a drive mechanism 3, and a mounting mechanism 4. The frame 1 serves as a connecting structure in the middle of the ring saw 2. The drive mechanism 3 is mounted on the frame 1 and includes a drive component 31, a transmission shaft 32, a transmission gear 33, a friction wheel, and a housing 38. The housing 38 is connected to the frame 1. The drive component 31 is a motor and is located inside the housing 38. The transmission shaft 32 is mounted on the housing 38 via a bearing structure and rotates relative to the housing 38. The transmission shaft 32 is in transmission engagement with the rotating part of the drive component 31. Figures 1-4 In the example shown, the rotating part of the drive component 31 is connected to the transmission shaft 32 via a bevel gear, allowing the drive component 31 to drive the transmission shaft 32 to rotate. A handrail may also be provided on the housing 38 for easy handholding during use.

[0020] A mounting mechanism 4 is provided on the frame 1. The ring saw 2 is mounted on the frame 1 through the mounting mechanism 4. Two friction wheels are provided on the drive shaft 32, and a drive gear 33 is also provided on the drive shaft 32. The drive gear 33 is between the two friction wheels, and its two end faces abut against the two friction wheels respectively. The two friction wheels cooperate to clamp and install the drive gear 33, so that when the drive shaft 32 rotates, it can drive the drive gear 33 to rotate through the two friction wheels. In the axial direction of the drive shaft 32, the position of the drive gear 33 corresponds to the position of the ring saw 2. The inner end face of the ring saw 2 is set as a toothed drive edge, which includes a number of teeth that are spaced apart. The drive gear 33 is engaged with the toothed drive edge of the inner end face of the ring saw 2. When the drive gear 33 is driven to rotate by the drive shaft 32, the drive gear 33 can drive the ring saw 2 to rotate.

[0021] During the use of the device, when the ring saw 2 encounters a hard object and cannot rotate, the ring saw 2 and the transmission gear 33 jam. Since the transmission gear 33 and the transmission shaft 32 transmit power through the friction effect of the two friction wheels, the jamming of the transmission gear 33 results in insufficient friction effect of the two friction wheels to continue driving the transmission gear 33 to rotate. The transmission relationship between the transmission gear 33 and the transmission shaft 32 is temporarily disconnected. At this time, the drive component 31 only drives the transmission shaft 32 and the two friction wheels to rotate. The anti-lock transmission structure between the transmission gear 33 and the transmission shaft 32 can effectively prevent the ring saw 2 from jamming and causing damage to the drive component 31 and the transmission shaft 32.

[0022] The mounting mechanism 4 includes two mounting wheels, which are rotatably mounted on the frame 1. The axles of the two mounting wheels are parallel. The ring saw 2 is positioned between the two mounting wheels after being mounted on the frame 1. The two mounting wheels abut against the two side end faces of the ring saw 2, and the axles of each mounting wheel are along the radial direction of the ring saw 2. The two mounting wheels clamp the ring saw 2. When the ring saw 2 is driven to rotate, it will drive the two mounting wheels to rotate. The mounting wheels are provided with circumferential limit protrusions, and the side end faces of the ring saw 2 are provided with circumferential limit grooves. During the rotation of the ring saw 2, the friction between the ring saw 2 and the mounting wheels drives the mounting wheels to rotate. During the rotation of the ring saw 2 and the mounting wheels, the limit protrusions on the mounting wheels are always embedded in the limit grooves of the ring saw 2. The cooperation between the limit protrusions and the limit grooves can restrict the radial movement of the ring saw 2, ensuring that the ring saw 2 is stable in position during use, thereby maintaining a stable transmission relationship between the ring saw 2 and the transmission gear 33.

[0023] In this embodiment of the novel ring saw 2, the ring saw 2 and the drive mechanism 3 are driven by gear transmission. In the drive mechanism 3, the transmission shaft 32 and the transmission gear 33 are driven to rotate by the friction effect between the two friction wheels and the transmission gear 33. When the ring saw 2 locks up, the transmission between the transmission gear 33 and the transmission shaft 32 is disconnected, avoiding damage to the drive shaft, drive component 31, and other components. Since the ring saw 2 and the drive mechanism 3 are driven by gear transmission, the position of the ring saw 2 will not change due to wear between adjacent components. Therefore, the structure and installation method of each mounting wheel of the mounting mechanism 4 do not need to consider the factor of the position change of the ring saw 2, so a simpler and more reasonable structure and installation method can be adopted.

[0024] To ensure that the ring saw 2 can be securely installed on the frame 1, at least two mounting mechanisms 4 are provided on the frame 1. Each mounting mechanism 4 is distributed along the circumference of the ring saw 2, and the ring saw 2 is installed and limited from multiple positions to improve the overall stability of the device.

[0025] For details, please refer to Figures 1-3The mounting mechanism 4 includes a first mounting cylinder and a second mounting cylinder, both of which are mounted on the frame 1. After the ring saw 2 is mounted on the frame 1, the axes of the first and second mounting cylinders are along the radial direction of the ring saw 2. A first mounting member 41 is provided inside the first mounting cylinder. The first mounting member 41 is a cylindrical structure adapted to the inner diameter of the first mounting cylinder. One end of the first mounting member 41 extends out of the first mounting cylinder and is provided with a first mounting wheel 42. The first mounting member 41 serves as the axle of the first mounting wheel 42, or an axle for mounting the first mounting wheel 42 is coaxially provided on the first mounting member 41. The second mounting cylinder contains a second mounting component 43, which is a cylindrical structure adapted to the inner diameter of the second mounting cylinder. One end of the second mounting component 43 extends out of the second mounting cylinder and is equipped with a second mounting wheel 44. The second mounting wheel 44 is eccentrically mounted on the second mounting component 43, meaning that the axis of the wheel axle of the second mounting wheel 44 does not coincide with the central axis of the second mounting component 43. The second mounting component 43 can rotate relative to the second mounting cylinder. The rotation of the second mounting component 43 can drive the second mounting wheel 44 to move between the mounting position and the dismounting position. When the second mounting wheel 44 is in the mounting position, it is close to the first mounting wheel 42. The second mounting wheel 44 and the first mounting wheel 42 cooperate to clamp and install the ring saw 2. When the second mounting wheel 44 is in the dismounting position, it is relatively far away from the first mounting wheel 42. At this time, the distance between the first mounting wheel 42 and the second mounting wheel 44 is large, allowing the ring saw 2 to be assembled and disassembled.

[0026] Furthermore, a limiting structure is provided between the second mounting member 43 and the inner wall of the second mounting cylinder. The limiting structure includes an annular groove and an annular retainer. The annular groove is located on the inner wall of the second mounting cylinder, and the annular retainer is located on the outer end face of the second mounting member 43; alternatively, the annular groove is located on the outer end face of the second mounting member 43, and the annular retainer is located on the inner wall of the second mounting cylinder. The annular retainer extends into the annular groove and engages with it. Under the action of the limiting structure, the second mounting member 43 can rotate relative to the second mounting cylinder but cannot move along the axial direction of the second mounting cylinder. In some embodiments, both the second mounting member 43 and the second mounting cylinder are provided with pin holes. When the second mounting wheel 44 is in the mounting position, the pin holes of the second mounting member 43 and the second mounting cylinder correspond. By using a pin passing through the two pin holes, the state of the second mounting member 43 can be stabilized.

[0027] A rotating handle can also be provided on the second mounting part 43. The rotating handle extends outside the second mounting cylinder. The second mounting part 43 can be rotated using the rotating handle, thereby facilitating the disassembly and assembly of the ring saw 2.

[0028] Please see Figures 1-4The drive shaft 32 has a threaded hole at its end. Two friction wheels are a first friction wheel 34 and a second friction wheel 35. The first friction wheel 34 has a first mounting hole at its center, through which a threaded connector, either a screw or a bolt with a stop, is inserted. The threaded connector connects to the threaded hole and mounts the first friction wheel 34 to the end of the drive shaft 32. The second friction wheel 35 has a second mounting hole at its center, through which it is fitted onto the drive shaft 32. The drive shaft 32 has a top support 36.

[0029] After the second friction wheel 35 is mounted on the drive shaft 32, the drive gear 33 is mounted on the drive shaft 32. Then, the first friction wheel 34 is installed on the end of the drive shaft 32 using a threaded connector. At this time, the first friction wheel 34 presses the drive gear 33 onto the second friction wheel 35 along the drive shaft 32, and makes the second friction wheel 35 abut against the top support 36. The first friction wheel 34 and the second friction wheel 35 cooperate to clamp the transmission gear. The rotation of the drive shaft 32 can drive the rotation of the drive gear 33 through the cooperation of the first friction wheel 34 and the second friction wheel 35.

[0030] The drive mechanism 3 also includes a limiting ring 37, which is fitted onto the drive shaft 32 and located within the installation gap. The limiting ring 37 and the first friction wheel 34 are an integral structure. When the first friction wheel 34 is installed at the end of the drive shaft 32, the limiting ring 37 is fitted onto the drive shaft 32. The transmission gear 33 is fitted onto the limiting ring 37. The limiting ring 37 can be used to quickly calibrate the transmission gear 33 to a coaxial state with the drive shaft 32.

[0031] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel ring saw, characterized in that: The system includes a frame (1), a ring saw (2), a drive mechanism (3), and a mounting mechanism (4). The drive mechanism (3) is mounted on the frame (1). The drive mechanism (3) includes a drive component (31), a drive shaft (32), a transmission gear (33), and friction wheels. Two friction wheels are mounted on the drive shaft (32). The transmission gear (33) is mounted on the drive shaft (32) and is positioned between and in contact with the two friction wheels. The drive shaft drives the drive shaft (32) to rotate and, through the two friction wheels, drives the transmission gear (33) to rotate. The inner end face of the ring saw (2) is set as a toothed drive edge. The ring saw (2) is set on the frame (1) and the inner end face of the ring saw (2) is driven by the transmission gear (33). The frame (1) is provided with an installation mechanism (4). The installation mechanism (4) includes two installation wheels. The two installation wheels are respectively on both sides of the ring saw (2) and abut against the side end face of the ring saw (2). The installation wheels are provided with a limit protrusion along the circumferential direction. The side end face of the ring saw (2) is provided with a limit groove along the circumferential direction. The ring saw (2) rotates and drives each installation wheel to rotate. The limit protrusion and the limit groove are engaged.

2. The novel ring saw according to claim 1, characterized in that: At least two mounting mechanisms (4) are provided around the ring saw (2) on the frame (1).

3. A novel ring saw according to claim 2, characterized in that: The mounting mechanism (4) also includes a first mounting cylinder and a second mounting cylinder. The first mounting cylinder and the second mounting cylinder are mounted on the frame (1). The first mounting cylinder is provided with a first mounting component (41). The first mounting component (41) extends out of the first mounting cylinder and is provided with a first mounting wheel (42). The second mounting cylinder is provided with a second mounting component (43). The second mounting component (43) extends out of the second mounting cylinder and is provided with a second mounting wheel (44). The second mounting wheel (44) does not coincide with the central axis of the second mounting cylinder. The second mounting component (43) rotates relative to the second mounting cylinder and drives the second mounting wheel (44) to move between the mounting position and the disassembly position.

4. A novel ring saw according to claim 3, characterized in that: The second mounting component (43) is provided with a rotating handle that extends outside the second mounting cylinder.

5. A novel ring saw according to claim 2, characterized in that: The drive shaft (32) has a threaded hole at its end. The two friction wheels are a first friction wheel (34) and a second friction wheel (35). The first friction wheel (34) has a first mounting hole and a threaded connector is provided in the first mounting hole. The first friction wheel (34) is located at the end of the drive shaft (32) and the threaded connector is connected to the threaded hole. The drive shaft (32) has a top support (36) and the second friction wheel (35) has a second mounting hole. The second friction wheel (35) is fitted onto the drive shaft (32) and abuts against the top support (36).

6. A novel ring saw according to claim 5, characterized in that: The drive mechanism (3) also includes a limiting ring (37), which is fitted on the drive shaft (32) and within the installation gap. The limiting ring (37) and the first friction wheel (34) are an integral structure, and the transmission gear (33) is fitted on the outside of the limiting ring (37).

7. A novel ring saw according to claim 6, characterized in that: The drive mechanism (3) also includes a housing (38), which is connected to the frame (1) and has a handrail. The drive component (31) is located inside the housing (38), and the power output part of the drive component (31) is connected to the transmission shaft (32), and the drive component (31) drives the transmission shaft (32) to rotate.

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