Three-bearing slewing mechanism of disk saw

Abstract

The utility model relates to the technical field of sawing machine equipment components, in particular to a disk saw three-bearing slewing mechanism which comprises an outer shell and a circular saw blade, a fixing shaft is welded to the outer shell, the fixing shaft is fixedly connected with an outer ring of a first bearing, an inner ring of the first bearing is fixedly connected with a driving motor spindle, and the rear side of the outer shell is fixedly connected with an outer shell cover. The fixing shaft is fixedly connected with an outer ring of a second bearing, an inner ring of the second bearing is fixedly connected with a first rotating shaft, the outer side of the first rotating shaft is fixedly connected with a first fixing plate, and the first fixing plate is in bolted connection with a second fixing plate through a first connecting bolt. The circular saw blade can be driven by the driving motor located in the middle and the two clamping tooth discs at the same time, so that the circular saw blade has better operation stability, the circular saw blade is not prone to being snapped when hard raw materials such as concrete and thick steel bars are cut, and the device has higher safety.

Description

Technical Field

[0001] The utility model relates to the technical field of sawing machine equipment components, in particular to a three-bearing rotary mechanism for a circular saw. Background Art

[0002] The circular saw uses an air compressor or a high-pressure air bottle to drive the pneumatic motor to run at high speed to achieve fast cutting. The circular saw can cut a variety of raw materials such as steel pipes, steel bars, iron pipes, doors and windows, concrete, etc.

[0003] The circular saw needs to be driven by a rotating mechanism to transmit the running action of the pneumatic motor to the circular saw blade, thereby driving the circular saw blade to produce a cutting action. The existing rotating mechanisms of some circular saws only use one bearing in conjunction with a power mechanism to drive the circular saw blade to operate, resulting in general operating stability of the circular saw blade. When cutting relatively hard raw materials (such as concrete, thick steel bars), the circular saw blade is easy to break, resulting in insufficient safety of the sawing machine equipment. Therefore, a three-bearing rotating mechanism for a circular saw is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a three-bearing rotating mechanism for a circular saw, so as to solve the problem that the rotating mechanism of the circular saw only uses one bearing in conjunction with a power mechanism to drive the circular saw blade to operate, resulting in general operating stability of the circular saw blade and the circular saw blade is easy to break when cutting relatively hard raw materials (such as concrete, thick steel bars).

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The three-bearing rotating mechanism of a circular saw comprises an outer shell and a circular saw blade, wherein a fixed shaft is welded to the outer shell, wherein the fixed shaft is fixedly connected to the outer ring of the first bearing, wherein the inner ring of the first bearing is fixedly connected to the main shaft of a driving motor, wherein the rear side of the outer shell is fixedly connected to the outer shell cover, wherein the fixed shaft is fixedly connected to the outer ring of the second bearing, wherein the inner ring of the second bearing is fixedly connected to the first rotating shaft, wherein the outer side of the first rotating shaft is fixedly connected to the first fixed plate, wherein the first fixed plate is bolted to the second fixed plate via a first connecting bolt, wherein a circular saw blade is arranged between the first fixed plate and the second fixed plate, wherein the fixed shaft is fixedly connected to the outer ring of the third bearing, wherein the inner ring of the third bearing is fixedly connected to the second rotating shaft, wherein the rear end of the second rotating shaft is fixedly connected to the third fixed plate, wherein the third fixed plate is bolted to the fourth fixed plate via a second connecting bolt, wherein a toothed disk is arranged between the third fixed plate and the fourth fixed plate.

[0007] Preferably, the rear side of the outer shell is open, the front side of the outer shell is provided with a fixed groove, the fixed shaft is provided with three circular through grooves, the first bearing and the drive motor each have three, the main shaft of the drive motor is horizontally distributed backward, and the outer shell cover is a vertically distributed metal plate.

[0008] Preferably, the second bearing and the first bearing are of the same size, the first rotating shaft is composed of two cylindrical shafts with different radii welded front and back, the front end of the first rotating shaft is fixedly connected to the main shaft of the driving motor located in the middle position, and the first fixing plate is a circular metal plate.

[0009] Preferably, there are four first connecting bolts, the second fixing plate is consistent in size with the first fixing plate, the second fixing plate is rotatably connected to the outer shell cover, and the circular saw blades are distributed vertically.

[0010] Preferably, there are two third bearings, two second rotating shafts and two third fixed plates, the third bearing is the same size as the first bearing, the second rotating shaft is the same size as the first rotating shaft, the front ends of the two second rotating shafts are respectively fixedly connected to the main shafts of the driving motor located on the upper and lower sides, and the third fixed plate is a circular metal plate.

[0011] Preferably, there are two groups of the second connecting bolts, each group has two second connecting bolts, the fourth fixing plate and the toothed disk each have two, the fourth fixing plate and the third fixing plate are of the same size, the toothed disks are vertically distributed, and the toothed disks are meshed with the circular saw blade.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, by providing the first rotating shaft, the second rotating shaft and the latching gear disk, the first rotating shaft can be driven to rotate by the driving motor located in the middle, and then the first fixed plate, the second fixed plate and the circular saw blade can be driven to rotate. The second rotating shaft can be driven to rotate by the main shaft of the driving motor located on the upper and lower sides, and then the third fixed plate, the fourth fixed plate and the latching gear disk can be driven to rotate. The circular saw blade is driven not only by the driving motor located in the middle, but also by the two latching gear disks, so that the circular saw blade has better operating stability. When cutting relatively hard raw materials such as concrete and thick steel bars, the circular saw blade is not easy to break, so that the device has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is an exploded view of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the fixed shaft installation structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the toothed disc of the utility model.

[0018] In the figure: 1. outer shell; 2. fixed shaft; 3. first bearing; 4. drive motor; 5. outer shell cover; 6. second bearing; 7. first rotating shaft; 8. first fixed plate; 9. first connecting bolt; 10. second fixed plate; 11. circular saw blade; 12. third bearing; 13. second rotating shaft; 14. third fixed plate; 15. second connecting bolt; 16. fourth fixed plate; 17. toothed disc. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] The three-bearing rotating mechanism of a circular saw comprises an outer shell 1 and a circular saw blade 11. A fixed shaft 2 is welded to the outer shell 1. The fixed shaft 2 is fixedly connected to the outer ring of a first bearing 3. The inner ring of the first bearing 3 is fixedly connected to the main shaft of a driving motor 4. The rear side of the outer shell 1 is fixedly connected to an outer shell cover 5. The fixed shaft 2 is fixedly connected to the outer ring of a second bearing 6. The inner ring of the second bearing 6 is fixedly connected to a first rotating shaft 7. The outer side of the first rotating shaft 7 is fixedly connected to a first fixed plate 8. The first fixed plate 8 is bolted to a second fixed plate 10 via a first connecting bolt 9. A circular saw blade 11 is arranged between the first fixed plate 8 and the second fixed plate 10. The fixed shaft 2 is fixedly connected to the outer ring of a third bearing 12. The inner ring of the third bearing 12 is fixedly connected to a second rotating shaft 13. The rear end of the second rotating shaft 13 is fixedly connected to a third fixed plate 14. The third fixed plate 14 is bolted to a fourth fixed plate 16 via a second connecting bolt 15. A toothed disk 17 is arranged between the third fixed plate 14 and the fourth fixed plate 16.

[0024] The rear side of the outer shell 1 is open, and a fixed groove is provided on the front side of the outer shell 1. The fixed shaft 2 is provided with three circular through grooves. The first bearing 3 and the drive motor 4 each have three, and the main shaft of the drive motor 4 is horizontally distributed backwards. The outer shell cover 5 is a vertically distributed metal plate, which can be fixedly connected to the outer shell 1 to form a protective shell; the second bearing 6 and the first bearing 3 are of the same size, and the first rotating shaft 7 is composed of two cylindrical shafts with different radii welded front and back. The front end of the first rotating shaft 7 is fixedly connected to the main shaft of the drive motor 4 located in the middle position, and the first fixed plate 8 is a circular metal plate, which can cooperate with the second fixed plate 10 to fix the circular saw blade 11; there are four first connecting bolts 9, and the second fixed plate 10 and the first fixed plate 8 are of the same size. The second fixed plate 10 is rotatably connected to the outer shell cover 5, and the circular saw blade 11 is vertically connected to the outer shell The third bearing 12, the second rotating shaft 13 and the third fixed plate 14 are each two in number. The third bearing 12 is the same size as the first bearing 3, the second rotating shaft 13 is the same size as the first rotating shaft 7, the front ends of the two second rotating shafts 13 are respectively fixedly connected to the main shafts of the driving motor 4 on the upper and lower sides, and the third fixed plate 14 is a circular metal plate, which can cooperate with the fourth fixed plate 16 to fix the toothed disk 17; there are two groups of second connecting bolts 15, each group of second connecting bolts 15 has two, the fourth fixed plate 16 and the toothed disk 17 each have two, the fourth fixed plate 16 and the third fixed plate 14 are the same size, the toothed disk 17 is vertically distributed, the toothed disk 17 is engaged with the circular saw blade 11, and can assist the rotation of the circular saw blade 11.

[0025] Working process: before use, turn on the power and start the drive motor 4. The three drive motors 4 start synchronously. The drive motor 4 on the upper side and the drive motor 4 on the lower side have the same rotation speed. The drive motor 4 in the middle has a slower rotation speed than the drive motors 4 on the upper and lower sides, so that the rotation linear speeds of the toothed disk 17 and the circular saw blade 11 are the same. The first fixed plate 8 and the second fixed plate 10 are bolted together by the first connecting bolt 9, so that the circular saw blade 11 can be fixed. The three drive motors 4 are fixed by the fixed shaft 2. The main shaft of the drive motor 4 in the middle drives the first fixed plate 8, the second fixed plate 10 and the circular saw blade 11 to rotate through the first rotating shaft 7. The main shafts of the drive motors 4 on the upper and lower sides drive the third fixed plate 14, the fourth fixed plate 16 and the toothed disk 17 to rotate through the second rotating shaft 13. The circular saw blade 11 is not only driven by the drive motor 4 in the middle, but also driven by the two toothed disks 17, so that the circular saw blade 11 has better operating stability. When cutting harder raw materials such as concrete and thick steel bars, the circular saw blade 11 is not easy to break, so that the device has higher safety.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-bearing slewing mechanism for a circular saw, comprising an outer shell (1) and a circular saw blade (11), characterized in that: The outer shell (1) is welded with a fixed shaft (2), the fixed shaft (2) is fixedly connected to the outer ring of a first bearing (3), the inner ring of the first bearing (3) is fixedly connected to the main shaft of a driving motor (4), the rear side of the outer shell (1) is fixedly connected to an outer shell cover (5), the fixed shaft (2) is fixedly connected to the outer ring of a second bearing (6), the inner ring of the second bearing (6) is fixedly connected to a first rotating shaft (7), the outer side of the first rotating shaft (7) is fixedly connected to a first fixed plate (8), and the first fixed plate (8) is bolted to the second fixed plate (9) via a first connecting bolt (9). A fixed plate (10), a circular saw blade (11) is provided between the first fixed plate (8) and the second fixed plate (10), the fixed shaft (2) is fixedly connected to the outer ring of the third bearing (12), the inner ring of the third bearing (12) is fixedly connected to the second rotating shaft (13), the rear end of the second rotating shaft (13) is fixedly connected to the third fixed plate (14), the third fixed plate (14) is bolted to the fourth fixed plate (16) via a second connecting bolt (15), and a toothed disc (17) is provided between the third fixed plate (14) and the fourth fixed plate (16).

2. The three-bearing rotating mechanism of a circular saw according to claim 1, characterized in that: The rear side of the outer shell (1) is open, the front side of the outer shell (1) is provided with a fixed groove, the fixed shaft (2) is provided with three circular through grooves, the first bearing (3) and the drive motor (4) are each provided with three, the main shaft of the drive motor (4) is horizontally distributed backwards, and the outer shell cover (5) is a vertically distributed metal plate.

3. The three-bearing rotating mechanism of a circular saw according to claim 1, characterized in that: The second bearing (6) and the first bearing (3) are of the same size; the first rotating shaft (7) is formed by welding two cylindrical shafts of different radii front and back; the front end of the first rotating shaft (7) is fixedly connected to the main shaft of the driving motor (4) located in the middle; and the first fixing plate (8) is a circular metal plate.

4. The three-bearing rotating mechanism of a circular saw according to claim 1, characterized in that: There are four first connecting bolts (9), the second fixing plate (10) and the first fixing plate (8) are of the same size, the second fixing plate (10) is rotatably connected to the outer shell cover (5), and the circular saw blades (11) are distributed vertically.

5. The three-bearing rotating mechanism of a circular saw according to claim 1, characterized in that: There are two of each of the third bearing (12), the second rotating shaft (13) and the third fixed plate (14); the third bearing (12) and the first bearing (3) are of the same size; the second rotating shaft (13) and the first rotating shaft (7) are of the same size; the front ends of the two second rotating shafts (13) are respectively fixedly connected to the main shafts of the drive motor (4) located at the upper side and the lower side; and the third fixed plate (14) is a circular metal plate.

6. The three-bearing rotating mechanism of a circular saw according to claim 1, characterized in that: There are two groups of the second connecting bolts (15), each group of the second connecting bolts (15) has two, the fourth fixing plate (16) and the latching tooth plate (17) each have two, the fourth fixing plate (16) and the third fixing plate (14) are of the same size, the latching tooth plates (17) are vertically distributed, and the latching tooth plates (17) are meshed with the circular saw blade (11).

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