Novel gasoline power girdling saw
By adjusting the saw blade clamping force through a limiting structure and using a dual cooling system, the problems of unadjustable saw blade clamping force and low transmission efficiency are solved, achieving stable saw blade cutting and a long engine life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-14
- Publication Date
- 2026-03-31
AI Technical Summary
The clamping force of existing gasoline saw blades is not adjustable, which causes the saw blade to shake or break. Loading and unloading the saw blade is time-consuming and laborious, and the transmission efficiency is low and the blade is easily damaged.
The saw blade clamping force is adjusted by a limit structure consisting of a drive wheel, a driven wheel, and a guide wheel, and the saw blade and engine are cooled by both water and air through a three-way pipe.
It achieves stable cutting with the saw blade, extends the service life of the saw blade and engine, and improves transmission efficiency and convenience.
Smart Images

Figure CN224058826U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gasoline-powered ring cutting saw technology, and specifically refers to a new type of gasoline-powered ring cutting saw. Background Technology
[0002] Currently, gasoline saws have two major problems: First, the clamping force of the saw blade cannot be adjusted, and after prolonged use, the saw blade becomes thinner and wobble, which not only results in uneven cuts but also poses a risk of breakage and injury. Second, when installing the saw blade, it is easy to clamp it too tightly, which affects the cutting force and makes disassembly difficult, and replacing the saw blade is time-consuming and laborious. Furthermore, most gasoline-powered ring saws are driven by belts, which cannot transmit high power and are prone to damage. Utility Model Content
[0003] The purpose of this invention is to provide a new type of gasoline-powered ring saw that is structurally stable, easy to adjust, and has a long service life.
[0004] The purpose of this utility model is achieved as follows: A novel gasoline-powered ring saw includes a housing, a gasoline engine disposed on one side of the housing, a transmission structure disposed on one side of the gasoline engine, and an annular saw blade disposed within the transmission structure. The transmission structure includes a connecting seat connected to the gasoline engine. A fixed seat is fixed on one side of the connecting seat, and a rotating seat is hinged to the fixed seat. A drive wheel connected to the transmission structure is provided on the fixed seat. The drive wheel abuts against the side wall of the annular saw blade. A driven wheel abuts against the other side of the annular saw blade. The driven wheel is mounted on the rotating seat. The rotating seat and the fixed seat are fixed together by adjusting screws.
[0005] The outer wall of the fixed base is provided with a mounting bracket, and a sliding seat is slidably mounted on the mounting bracket. Mounting brackets are provided at both the upper and lower ends of the sliding seat. Guide wheels are rotatably provided between the mounting bracket and the fixed base. An adjustment structure for controlling the position of the sliding seat is provided between the mounting bracket and the sliding seat.
[0006] Preferably, the annular saw blade has an annular groove on its side wall, and the annular groove engages with an annular protrusion formed on the drive wheel.
[0007] Preferably, one end of the outer shell is provided with a water inlet pipe that passes through the outer shell, and the other end of the water inlet pipe is connected to a three-way pipe, which is provided with a first water outlet and a second water outlet.
[0008] Preferably, the first water outlet is connected to the first water inlet and the second water inlet on the rotating seat via a water pipe.
[0009] Preferably, the other ends of the first and second water inlets are connected to a circumferential saw water tray by screws.
[0010] Preferably, the second water outlet is connected to the interior of the gasoline engine.
[0011] Preferably, the gasoline engine has several heat dissipation holes on one side.
[0012] Preferably, the outer casing is provided with a first switch and a second switch.
[0013] The outstanding and beneficial technical effects of this utility model compared to the prior art are as follows: The novel gasoline-powered ring saw of this utility model limits the movement of the ring saw blade through the drive wheel, driven wheel, and guide wheel, and can also adjust the clamping force of the ring saw blade, thereby avoiding excessive or insufficient clamping force on the ring saw blade, which would cause the ring saw blade to swing, break, or have insufficient cutting force due to excessive friction during the cutting process, affecting cutting efficiency and thus ensuring cutting stability. At the same time, it can facilitate the disassembly and replacement of the ring saw blade when problems occur, and can also protect the power transmission position to prevent impurities or cutting powder from entering the friction position and affecting service life. In addition, the three-way pipe can provide water cooling for both the saw blade and the gasoline engine, while the gasoline engine can also be air-cooled through the heat dissipation holes. Through dual cooling of water and air, the service life of the gasoline engine is greatly increased. Attached Figure Description
[0014] Figure 1 This is a simplified structural diagram of the present invention;
[0015] Figure 2 The structure of this utility model is simplified after removing the water tray and outer cover of the circumferential saw;
[0016] Figure 3 This is a simplified structural diagram of the present invention after half of the outer shell has been removed;
[0017] Figure 4 This is an exploded view of the transmission structure and the ring saw blade of this utility model. Detailed Implementation
[0018] The present invention will be further described below with reference to specific embodiments.
[0019] like Figure 1-4As shown, a novel gasoline-powered ring saw includes a housing 1, a gasoline engine 2 disposed on one side of the housing 1, a transmission structure 3 disposed on one side of the gasoline engine 2, and an annular saw blade 4 disposed within the transmission structure 3. The transmission structure 3 includes a connecting seat 5 connected to the gasoline engine 2. A fixed seat 6 is fixed on one side of the connecting seat 5. A rotating seat 7 is hinged on the fixed seat 6. A drive wheel 8 connected to the transmission structure 3 is provided on the fixed seat 6. The drive wheel 8 abuts against the side wall of the annular saw blade 4. A driven wheel 9 abuts against the other side of the annular saw blade 4. The driven wheel 9 is mounted on the rotating seat 7. The rotating seat 7 and the fixed seat 6 are fixed together by an adjusting screw 10.
[0020] The outer wall of the fixed base 6 is provided with a mounting bracket 11, and a sliding seat 12 is slidably mounted on the mounting bracket 11. Mounting brackets 11 are provided at both the upper and lower ends of the sliding seat 12. Guide wheels 13 are rotatably provided between the mounting bracket 11 and the fixed base 6. An adjustment structure for controlling the position of the sliding seat 12 is provided between the mounting bracket 11 and the sliding seat 12.
[0021] The novel gasoline-powered ring saw of this technical solution limits the movement of the ring saw blade 4 through the drive wheel 8, driven wheel 9, and guide wheel 13. It can also adjust the clamping force of the ring saw blade 4, thereby avoiding excessive or insufficient clamping force, which could cause the ring saw blade 4 to swing, break, or have insufficient cutting force due to excessive friction during cutting, thus affecting cutting efficiency and ensuring cutting stability. At the same time, it can facilitate the disassembly and replacement of the ring saw blade 4 when problems occur. It can also protect the power transmission position to prevent impurities or cutting powder from entering the friction position and affecting service life. Furthermore, the three-way pipe 17 can provide water cooling for both the saw blade and the gasoline engine. The gasoline engine 2 can also be air-cooled through the heat dissipation hole 22. Through dual cooling of water and air, the service life of the gasoline engine is greatly increased. The transmission structure is a conventional transmission for ring saws in this field, with power coming from the gasoline engine via a drive shaft. This is a common technology in this field and will not be described in detail again. The adjustment structure uses a screw to rotate the sliding seat 12 to move left and right, thereby limiting and locking the guide wheel 13 on the ring saw blade 4. The aforementioned transmission structure 3 adopts the latest shaft transmission, with the gasoline engine 2 transmitting power to the output shaft, which in turn transmits power to gear one. Gear one drives gear two, which is on the same axis as the drive wheel 8, to rotate. Gear two, through a connecting rod, drives the drive wheel 8 to rotate, thus causing the drive wheel 8 to drive the ring saw blade 4 to rotate.
[0022] Preferably, the annular saw blade 4 has an annular groove 14 on its side wall, which engages with an annular protrusion 15 formed on the drive wheel 8. The interaction between the annular groove 14 and the annular protrusion 15 ensures that the drive wheel 8 is firmly connected to the annular saw blade 4, preventing slippage during transmission and increasing transmission efficiency.
[0023] Preferably, one end of the outer shell 1 is provided with a water inlet pipe 16 that passes through the outer shell 1, and the other end of the water inlet pipe 16 is connected to a three-way pipe 17, which is provided with a first water outlet 18 and a second water outlet 19.
[0024] Preferably, the first outlet 18 is connected to the inlet 20 and inlet 21 on the rotating seat 7 via a water pipe.
[0025] Preferably, the other ends of the first water inlet 20 and the second water inlet 21 are connected to a ring saw water tray 66 by screws. Water can be splashed onto the ring saw blade 4 through the first water inlet 20 and the second water inlet 21, which can cool the ring saw blade in time and increase the service life of the ring saw blade 4.
[0026] Preferably, the second water outlet 19 is connected to the interior of the gasoline engine 2. Providing the second water outlet 19 ensures cooling of the gasoline engine 2, preventing it from burning out during prolonged operation and increasing its service life.
[0027] Preferably, the gasoline engine 2 has a plurality of heat dissipation holes 22 on one side. The heat dissipation holes ensure that the heat inside the gasoline engine 2 is dissipated in a timely manner, increasing its service life.
[0028] Preferably, the outer casing 1 is provided with a first switch 23 and a second switch 24. The arrangement of the first switch 23 and the second switch 24 can ensure the safety of the user and prevent accidental activation. The circumferential saw can only be started when the user presses the first switch 23 and the second switch 24 at the same time.
[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A new type of gasoline powered ring saw, characterized in that, The utility model relates to a gasoline engine driven ring saw, including shell (1), the gasoline engine (2) of setting in shell (1) one side, the transmission structure (3) of setting in gasoline engine (2) one side and the ring saw blade (4) of setting in transmission structure (3), transmission structure (3) including the connecting seat (5) connected with gasoline engine (2), the fixed seat (6) is fixed to connecting seat (5) one side, the rotary seat (7) is hinged on fixed seat (6), fixed seat (6) is equipped with the drive wheel (8) connected with transmission structure (3), drive wheel (8) abuts in ring saw blade (4) side wall, ring saw blade (4) other side abuts from the drive wheel (9) of dynamic wheel, from the drive wheel (9) of dynamic wheel is installed on rotary seat (7), rotary seat (7) and fixed seat (6) are fixed between through adjusting screw (10), The fixed seat (6) outer wall is equipped with mounting bracket (11), the sliding seat (12) is slidably arranged on the mounting bracket (11), the sliding seat (12) is provided with mounting bracket (11) on both ends, the mounting bracket (11) and the fixed seat (6) are rotatably provided with guide wheels (13), and the mounting bracket (11) and the sliding seat (12) are provided with adjusting structure for controlling the position of the sliding seat (12).
2. The novel gasoline powered ring saw of claim 1, wherein, The ring saw blade (4) side wall is provided with a ring groove (14), and the ring groove (14) is clamped with a ring protrusion (15) formed on the drive wheel (8).
3. The novel gasoline powered ring saw of claim 1, wherein, The shell (1) is provided with a water inlet pipe (16) penetrating into the shell (1) at one end, the other end of the water inlet pipe (16) is connected with a three-way pipe (17), the three-way pipe (17) is respectively provided with a first water outlet (18) and a second water outlet (19).
4. The novel gasoline powered ring saw of claim 3, wherein, The first water outlet (18) is connected with a water inlet one (20) and a water inlet two (21) formed on the rotary seat (7) through a water pipe.
5. The novel gasoline powered ring saw of claim 4, wherein, The other end of the water inlet one (20) and the water inlet two (21) is connected with a ring saw water disc (66) through a screw.
6. The novel gasoline powered ring saw of claim 3, wherein, The second water outlet (19) is connected with the inside of the gasoline engine (2).
7. The novel gasoline powered ring saw of claim 6, wherein, The gasoline engine (2) is provided with a plurality of heat dissipation holes (22) on one side.
8. The new type of gasoline-powered ring saw according to claim 1, characterized in that, The shell (1) is respectively provided with a first switch (23) and a second switch (24).