Stable trephine

Abstract

The utility model belongs to the technical field of trephine, and particularly relates to a stable trephine, which comprises a trephine main body, an annular saw blade arranged on the trephine main body, a saw blade protection cover arranged on one side of the annular saw blade and a trephine handle erected on the saw blade protection cover, an output shaft is arranged on one side of the trephine main body, a driving wheel is sleeved on the output shaft, and the trephine main body is arranged on the trephine main body. An annular saw blade abuts against the outer side of the driving wheel, a guide plate assembly is arranged on one side of the driving wheel, and the outer side of the guide plate assembly abuts against the inner wall of the annular saw blade. A fixing block is arranged in the saw blade protection cover, an eccentric wheel is arranged on the fixing block, and the eccentric wheel is arranged in a square groove formed in the guide plate assembly. The stable trephine is stable in structure, high in cutting efficiency and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of annular saws, and particularly refers to a stable annular saw. Background Art

[0002] At present, an annular saw is an efficient and multifunctional cutting tool, which is widely used in industries such as construction, metallurgy, chemical industry, and shipbuilding. It uses an annular saw blade for cutting, and has the characteristics of high cutting accuracy, fast speed, and good stability.

[0003] The problems existing in the prior art are as follows: the guide plate cannot be moved to adjust the gap between the driving wheel and the annular saw blade. After long-term use, there will be a gap between the internal driving wheel and the annular saw blade. When the friction ring saw wheel rotates, the driven wheel will slip, affecting the cutting efficiency. And when the annular saw blade is cutting, due to the lack of the limit of the guide plate, most of the front end of the annular saw blade has nothing to support, and it is easy to break when cutting an object, affecting the safety of the user and increasing the use cost. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a stable annular saw with stable structure, high cutting efficiency and long service life.

[0005] The purpose of the utility model is realized as follows: a stable annular saw, including an annular saw main body, an annular saw blade arranged on the annular saw main body, a saw blade protection cover installed on one side of the annular saw blade, and an annular saw handle erected on the saw blade protection cover. One side of the annular saw main body is provided with an output shaft, a driving wheel is sleeved on the output shaft, the outer side of the driving wheel abuts against the annular saw blade, one side of the driving wheel is provided with a guide plate assembly, and the outer side of the guide plate assembly abuts against the inner wall of the annular saw blade; a fixing block is arranged in the saw blade protection cover, and an eccentric wheel is arranged on the fixing block, and the eccentric wheel is arranged in a square groove opened on the guide plate assembly.

[0006] Preferably, a key is formed on the output shaft, and the key is clamped with a key groove opened in the driving wheel.

[0007] Preferably, the guide plate assembly includes an intermediate plate, outer plates are arranged on both sides of the intermediate plate, concave parts are formed at the upper and lower ends of one side of the intermediate plate, guide plate rollers are arranged in the two concave parts, the guide plate rollers are arranged between the two outer plates, and the guide plate rollers abut against the inner wall of the annular saw blade.

[0008] Preferably, the inner wall of the annular saw blade is arranged between the two outer plates.

[0009] Preferably, two water trays are arranged between the two outer plates, and the two water trays are respectively arranged at the upper and lower ends of the outer plates.

[0010] Preferably, at least one guide wheel is provided between the saw blade protection covers. A limiting groove is formed in the guide wheel, and the annular saw blade is arranged in the limiting groove.

[0011] Preferably, a V-shaped groove is formed in the driving wheel, and the V-shaped groove abuts against a V-shaped portion formed on the inner wall of the annular saw blade.

[0012] The prominent and beneficial technical effects of the present utility model compared with the prior art are as follows: In the stable ring saw of the present utility model, when the ring saw is used for a long time, the driving wheel will be worn or loosened after long-term use, and a gap will be produced between the driving wheel and the annular saw blade. At this time, due to the gap, the annular saw blade will slip when rotating, affecting the transmission efficiency of the driving wheel, and the rotation speed of the annular saw blade will also be affected, and the service life of the annular saw blade will be affected. By setting the eccentric wheel, the guide plate assembly can be finely adjusted to make the driving wheel abut against the annular saw blade, which can reduce the probability of slipping and greatly increase the transmission efficiency. Description of the Drawings

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is a structural schematic diagram of the present utility model after removing the saw blade protection cover and the outer plate;

[0015] Figure 3 is a schematic diagram of the connection relationship between the output shaft and the driving wheel of the present utility model;

[0016] Figure 4 is a cross-sectional view of the annular saw blade and the driving wheel of the present utility model. Detailed Embodiments

[0017] The following further describes the present utility model with specific embodiments.

[0018] As Figures 1-4 shown, a stable ring saw includes a ring saw main body 1, an annular saw blade 2 arranged on the ring saw main body 1, a saw blade protection cover 3 installed on one side of the annular saw blade 2, and a ring saw handle 4 erected on the saw blade protection cover 3. An output shaft 5 is provided on one side of the ring saw main body 1. A driving wheel 6 is sleeved on the output shaft 5. The outer side of the driving wheel 6 abuts against the annular saw blade 2. A guide plate assembly 7 is provided on one side of the driving wheel 6. The outer side of the guide plate assembly 7 abuts against the inner wall of the annular saw blade 2. A fixing block 8 is provided in the saw blade protection cover 3. An eccentric wheel 9 is provided on the fixing block 8. The eccentric wheel 9 is arranged in a square groove 10 formed in the guide plate assembly 7.

[0019] When the stable annular saw of this technical solution is in long-term use, the driving wheel 6 will be worn or loosened after long-term use, and a gap will be produced between it and the annular saw blade 2. Due to this gap, the annular saw blade 2 will slip when rotating, affecting the transmission efficiency of the driving wheel 6, and also affecting the rotation speed of the annular saw blade 2, and affecting the service life of the annular saw blade 2. Through the setting of the eccentric wheel 9, the guide plate assembly 7 can be finely adjusted to make the driving wheel 6 abut against the annular saw blade 2, which can reduce the probability of slipping and greatly increase the transmission efficiency.

[0020] Preferably, a key 11 is formed on the output shaft 5, and the key 11 is engaged with a key groove 12 formed in the driving wheel 6. Through the setting of the key 11 and the key groove 12, the connection between the output shaft and the driving wheel 6 can be made more stable.

[0021] Preferably, the guide plate assembly 7 includes an intermediate plate 13, outer plates 14 are provided on both sides of the intermediate plate 13, concave portions 15 are formed at both the upper and lower ends on one side of the intermediate plate 13, guide plate rollers 16 are provided in both the concave portions 15, the guide plate rollers 16 are arranged between the two outer plates 14, and the guide plate rollers 16 abut against the inner wall of the annular saw blade 2. The function of the guide plate rollers 16 can make the annular saw blade 2 rotate better and make its cutting efficiency higher.

[0022] Preferably, the inner wall of the annular saw blade 2 is arranged between the two outer plates 14. The annular saw blade 2 arranged between the outer plates 14 has a limiting effect to prevent the annular saw blade 2 from shifting during cutting.

[0023] Preferably, two water trays 17 are provided between the two outer plates 14, and the two water trays 17 are respectively arranged at the upper and lower ends of the outer plates 14. Arranging the water trays 17 at the upper and lower parts respectively can better discharge water during the cutting of the annular saw and increase its cutting efficiency.

[0024] Preferably, at least one guide wheel 18 is provided between the saw blade protective covers 3, a limiting groove 20 is formed in the guide wheel 18, and the annular saw blade 2 is arranged in the limiting groove 20.

[0025] Preferably, a V-shaped groove 21 is formed in the driving wheel 6, and the V-shaped groove 21 abuts against a V-shaped portion 22 formed on the inner wall of the annular saw blade 2.

[0026] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A stable annular saw, comprising an annular saw body (1), an annular saw blade (2) arranged on the annular saw body (1), a saw blade protective cover (3) installed on one side of the annular saw blade (2), and an annular saw handle (4) erected on the saw blade protective cover (3), characterized in that, One side of the trephine body (1) is provided with an output shaft (5). A driving wheel (6) is sleeved on the output shaft (5). An annular saw blade (2) is abutted against the outside of the driving wheel (6). A guide plate assembly (7) is arranged on one side of the driving wheel (6). The outside of the guide plate assembly (7) is abutted against the inner wall of the annular saw blade (2). A fixing block (8) is arranged inside the saw blade protection cover (3). An eccentric wheel (9) is arranged on the fixing block (8). The eccentric wheel (9) is arranged in a square groove (10) formed in the guide plate assembly (7).

2. The stable trephine according to claim 1, wherein A clamping key (11) is formed on the output shaft (5). The clamping key (11) is clamped with a key groove (12) formed in the driving wheel (6).

3. The stable trephine saw according to claim 1, wherein, The guide plate assembly (7) includes an intermediate plate (13). Outer plates (14) are arranged on both sides of the intermediate plate (13). Concave portions (15) are formed at both upper and lower ends on one side of the intermediate plate (13). Guide plate rollers (16) are arranged in both the concave portions (15). The guide plate rollers (16) are arranged between the two outer plates (14). The guide plate rollers (16) are abutted against the inner wall of the annular saw blade (2).

4. The stable trephine according to claim 3, characterized in that, The inner wall of the annular saw blade (2) is arranged between the two outer plates (14).

5. The stable trephine according to claim 4, wherein, Two water trays (17) are arranged between the two outer plates (14). The two water trays (17) are respectively arranged at the upper and lower ends of the outer plates (14).

6. The stable trephine according to claim 1, wherein, At least one guide wheel (18) is arranged between the saw blade protection covers (3). A limiting groove (20) is formed inside the guide wheel (18). The annular saw blade (2) is arranged in the limiting groove (20).

7. The stable trephine according to claim 1, wherein, A V-shaped groove (21) is formed inside the driving wheel (6). The V-shaped groove (21) is abutted against a V-shaped portion (22) formed on the inner wall of the annular saw blade (2).

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