Quick clamping mechanism of circular pipe belt sander

Abstract

The utility model provides a quick clamping mechanism of a round pipe belt sander, which comprises a fixed plate, a first assembling seat and a second assembling seat are integrally arranged on the fixed plate, a quick clamp is fixedly mounted on the fixed plate, a first driven abrasive belt wheel is rotatably mounted on the first assembling seat through a rotating shaft, a movable frame is mounted on the second assembling seat, and a second driven abrasive belt wheel is mounted on the movable frame. A second driven abrasive belt wheel is rotationally installed at the end, away from the second assembling base, of the movable frame through a rotating shaft, and the second driven abrasive belt wheel and the first driven abrasive belt wheel are in transmission connection with the driving abrasive belt wheel through abrasive belts at the same time. According to the quick clamping mechanism of the circular pipe belt sander, the quick clamp is arranged, so that the whole mechanism is quickly mounted and dismounted, and the working efficiency is greatly improved. And meanwhile, the abrasive belt is more convenient to replace due to the design of the movable frame, the controllability and safety of operation are improved due to the arrangement of the auxiliary handle and the protective cover, meanwhile, the horizontal angle of the bottom of the abrasive belt is convenient to adjust, and different use requirements can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a round pipe abrasive belt machine technical field, concretely relates to a kind of quick clamping mechanism of round pipe abrasive belt machine. BACKGROUND

[0002] Round pipe abrasive belt machine is a kind of equipment specially used to carry out sanding, polishing etc. to the surface of round pipe, and round pipe abrasive belt machine uses abrasive belt as grinding tool, and the surface of round pipe is ground using abrasive belt, and abrasive belt rotates under the driving of driving abrasive belt wheel, and contact with the surface of round pipe and produce grinding effect, so as to achieve the effect of sanding and polishing.

[0003] However, the installation assembly of the abrasive belt of the traditional round pipe abrasive belt machine is usually fixedly installed, so that the operation is often complex when installing and replacing the abrasive belt, and it takes a long time, and the safety needs to be improved, and the bottom horizontal angle of the abrasive belt is not convenient to adjust, so that different use requirements cannot be met.

[0004] Therefore, a kind of quick clamping mechanism of round pipe abrasive belt machine is provided. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of quick clamping mechanism of round pipe abrasive belt machine to solve the problem presented in the background art.

[0006] Specific technical solutions are as follows:

[0007] A kind of quick clamping mechanism of round pipe abrasive belt machine, comprising: fixed plate, the fixed plate is integrally provided with respectively matched seat one, matched seat two and fixedly installed quick clamp, wherein:

[0008] Driven abrasive belt wheel one is rotatably installed on matched seat one by pivot, movable frame is installed on matched seat two, driven abrasive belt wheel two is rotatably installed on the end of movable frame away from matched seat two by pivot, driven abrasive belt wheel two and driven abrasive belt wheel one are driven connected with driving abrasive belt wheel by abrasive belt simultaneously, the abrasive belt is simultaneously sleeved on driven abrasive belt wheel two, driven abrasive belt wheel one and driving abrasive belt wheel, and driving abrasive belt wheel is fixedly sleeved on the output shaft of round pipe abrasive belt machine;

[0009] Quick clamp is sleeved on cylindrical seat, cylindrical seat is fixedly installed on the round pipe abrasive belt machine, and cylindrical seat is located at the periphery of output shaft.

[0010] The quick clamping mechanism of the round pipe belt sander, wherein: the quick clamping mechanism comprises a clamp, a locking bolt and an eccentric handle, the clamp is integrally formed on the fixed plate, both ends of the clamp are integrally provided with a fixed block, the screw rod of the locking bolt is movably penetrated through the two fixed blocks, and the eccentric handle is hinged at one end of the locking bolt; when the eccentric handle is pressed against the edge of the fixed plate, the two fixed blocks are close to each other, so that the clamp can be firmly clamped on the outer periphery of the cylindrical seat; when the eccentric handle is lifted away from the edge of the fixed plate, the two fixed blocks are away from each other, so that the clamp can rotate on the outer periphery of the cylindrical seat.

[0011] The quick clamping mechanism of the round pipe belt sander, wherein: the movable frame comprises a U-shaped seat, a torsion spring and a bent rod, the open end of the U-shaped seat is rotatably installed on the second matching seat by a bolt, a bolt is fixedly installed in the interior of the U-shaped seat, the torsion spring is sleeved on the bolt, one torsion arm of the torsion spring abuts against the closed end of the U-shaped seat, and the other torsion arm of the torsion spring abuts against a limiting groove, the limiting groove is formed in the second matching seat, one side wall of the U-shaped seat abuts against a limiting block under the action of the torsion spring, the limiting block is fixedly installed on the second matching seat, and the limiting block and the limiting groove are respectively located on the two sides of the U-shaped seat, the limiting groove is located close to the first matching seat, and the bent rod is fixedly installed at the end of the closed end of the U-shaped seat.

[0012] The quick clamping mechanism of the round pipe belt sander, wherein: the fixed plate is further integrally provided with a third matching seat, and an auxiliary handle is fixedly installed on the side of the third matching seat away from the round pipe belt sander.

[0013] The quick clamping mechanism of the round pipe belt sander, wherein: a protective cover is installed on the side of the fixed plate away from the round pipe belt sander by a screw, and the protective cover is located between the auxiliary handle and the belt.

[0014] The quick clamping mechanism of the round pipe belt sander, wherein: the cylindrical seat is coaxially arranged with the output shaft.

[0015] The quick clamping mechanism of the round pipe belt sander, wherein: a bearing is sleeved on the outside of the output shaft, the outer ring of the bearing is fixedly connected with the inner wall of the cylindrical seat, and the inner ring of the bearing is fixedly connected with the output shaft.

[0016] The quick clamping mechanism of the round pipe belt sander, wherein: the driven belt pulley, the driven belt pulley and the driving belt pulley are all I-shaped.

[0017] The aforementioned quick clamping mechanism for a round tube belt sander, wherein the driven belt sander one, the driven belt sander two, and the driving belt sander are arranged in a triangular pattern.

[0018] The quick clamping mechanism of the aforementioned round tube belt sander includes: a mounting hole on the clamp and a threaded hole corresponding to the mounting hole on the round tube belt sander.

[0019] This utility model has the following beneficial effects:

[0020] The quick-clamping mechanism of the round tube belt sander provided by this utility model enables rapid installation and disassembly of the entire mechanism by setting up a quick clamp, which greatly improves work efficiency. At the same time, the design of the movable frame makes it easier to replace the sanding belt, while the setting of auxiliary handles and protective covers improves the operability and safety of operation. In addition, the bottom horizontal angle of the sanding belt can be easily adjusted to meet different usage needs. Attached Figure Description

[0021] Figure 1 Schematic diagram of the quick clamping mechanism of the round tube belt sander provided in this embodiment of the utility model Figure One ;

[0022] Figure 2 Schematic diagram of the quick clamping mechanism of the round tube belt sander provided in this embodiment of the utility model Figure Two ;

[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 Schematic diagram of the quick clamping mechanism of the round tube belt sander provided in this embodiment of the utility model Figure Three ;

[0025] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0026] Figure 6 A schematic diagram of the active abrasive belt wheel and the round tube abrasive belt machine assembled in the quick clamping mechanism of the round tube abrasive belt machine provided in this embodiment of the utility model;

[0027] Figure 7 A schematic diagram of the quick clamping mechanism of the circular tube belt sander provided in this embodiment of the utility model in a locked state after assembly with the circular tube belt sander;

[0028] Figure 8 This is a schematic diagram of the quick clamping mechanism of the circular tube belt sander provided in this embodiment of the utility model when it is in a loosened state after being assembled with the circular tube belt sander.

[0029] In the drawings:

[0030] 1, fixed plate; 101, fitting seat one; 102, fitting seat two; 103, fitting seat three; 104, bolt one; 105, U-shaped seat; 106, bolt two; 107, bent rod; 108, torsion spring; 109, limiting groove; 110, limiting block;

[0031] 2, quick clamp; 201, clamp; 202, fixed block; 203, locking bolt; 204, eccentric handle; 205, mounting hole;

[0032] 3, driven sand belt wheel one;

[0033] 4, driven sand belt wheel two;

[0034] 5, driven sand belt wheel;

[0035] 6, sand belt;

[0036] 7, protective cover;

[0037] 8, auxiliary handle; 9, round pipe sand belt machine; 901, output shaft; 902, cylindrical seat. DETAILED DESCRIPTION

[0038] The technical scheme of the utility model will be further illustrated below in combination with the drawings and through specific embodiments.

[0039] Among them, the drawings are only used for example explanation, and the representation is only a schematic diagram, not a real object drawing, and cannot be understood as a limitation of the patent; in order to better illustrate the embodiments of the utility model, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings can be omitted.

[0040] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not to indicate or imply that the device or element referred to must have a specific orientation, structure and operation, therefore, the positional relationship described in the drawings is only used for example explanation, and cannot be understood as a limitation of the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Example

[0043] The quick clamping mechanism of the round tube belt sander provided in this embodiment, such as Figures 1-8 As shown, it includes: a fixing plate 1, on which mounting base 101, mounting base 2 102 and quick clamp 2 are integrally provided.

[0044] Among them, a driven sanding belt wheel 3 is rotatably mounted on the mounting base 101 via a rotating shaft, and a movable frame is mounted on the mounting base 2 102. A driven sanding belt wheel 4 is rotatably mounted on the end of the movable frame away from the mounting base 2 102 via a rotating shaft. The driven sanding belt wheel 4 and the driven sanding belt wheel 3 are simultaneously connected to the driving sanding belt wheel 5 through the sanding belt 6. The sanding belt 6 is simultaneously mounted on the driven sanding belt wheel 4, the driven sanding belt wheel 3, and the driving sanding belt wheel 5. The driving sanding belt wheel 5 is fixedly mounted on the output shaft 901 of the round tube sander 9.

[0045] The quick clamp 2 is mounted on the cylindrical seat 902, which is fixedly installed on the circular tube belt sander 9. The cylindrical seat 902 is located on the periphery of the output shaft 901, and the output shaft 901 can rotate relative to the cylindrical seat 902.

[0046] The quick clamping mechanism of the circular tube belt sander using the above technical solution is equipped with a quick clamp 2 for quick installation of the entire machine onto the circular tube belt sander 9, making installation more convenient and significantly improving work efficiency.

[0047] Specifically, in the embodiment, the quick clamp 2 is provided with a clamping hoop 201, a locking bolt 203 and an eccentric handle 204. The clamping hoop 201 is integrally formed on the fixing plate 1, and both ends of the clamping hoop 201 are integrally provided with a fixing block 202. The screw rod of the locking bolt 203 is movably penetrated through the two fixing blocks 202. The eccentric handle 204 is hinged to one end of the locking bolt 203. When the eccentric handle 204 is pressed against the edge of the fixing plate 1, the two fixing blocks 202 are close to each other, so that the clamping hoop 201 can be tightly clamped on the outer periphery of the cylindrical seat 902. When the eccentric handle 204 is lifted away from the edge of the fixing plate 1, the two fixing blocks 202 are away from each other, so that the clamping hoop 201 can rotate on the outer periphery of the cylindrical seat 902. In use, the clamping hoop 201 is sleeved on the outer periphery of the cylindrical seat 902. When the eccentric handle 204 is pressed, the clamping hoop 201 can be locked on the cylindrical seat 902. When the eccentric handle 204 is lifted, the clamping hoop 201 can be loosened. At this time, the bottom horizontal angle of the abrasive belt 6 can be adjusted by rotating the clamping hoop 201 to adapt to the use requirements of different users.

[0048] Specifically, in the embodiment, the movable frame is provided with a U-shaped seat 105, a torsion spring 108 and a bent rod 107. The open end of the U-shaped seat 105 is rotatably installed on the second mounting seat 102 by a bolt I 04, and a bolt II 106 is fixedly installed in the interior of the U-shaped seat 105. The torsion spring 108 is sleeved on the bolt II 106. One torsion arm of the torsion spring 108 abuts against the closed end of the U-shaped seat 105, and the other torsion arm of the torsion spring 108 abuts against a limiting groove 109. The limiting groove 109 is formed in the second mounting seat 102. Under the action of the torsion spring 108, one side wall of the U-shaped seat 105 abuts against a limiting block 110. The limiting block 110 is fixedly installed on the second mounting seat 102, and the limiting block 110 and the limiting groove 109 are respectively located on the two sides of the U-shaped seat 105. The limiting groove 109 is located close to the first mounting seat 101. The bent rod 107 is fixedly installed at the end of the closed end of the U-shaped seat 105. The driven belt pulley II 4 is rotatably installed at the end of the bent rod 107 away from the U-shaped seat 105 by a rotating shaft.

[0049] The movable frame is mainly composed of the U-shaped seat 105, the torsion spring 108 and the bent rod 107. In use, under the action of the torsion spring 108, one side wall of the U-shaped seat 105 abuts against the limiting block 110. At this time, the abrasive belt 6 can be in a tension state under the action of the driven belt pulley I 3, the driven belt pulley II 4 and the driving belt pulley 5, so that the surface of the round pipe can be polished.

[0050] When the bent rod 107 is pressed towards the first mounting seat 101, the abrasive belt 6 can be in a tension release state at this time, so that the abrasive belt 6 can be replaced conveniently, thereby making the replacement of the abrasive belt 6 more convenient.

[0051] Specifically, in the embodiment, the fixed plate 1 is further integrally provided with a mounting seat three 103, and an auxiliary handle 8 is fixedly installed on the side of the mounting seat three 103 away from the circular pipe belt sander 9. The auxiliary handle 8 is arranged close to the mounting seat one 101, and the auxiliary handle 8 is arranged to assist in operating the circular pipe belt sander 9, so that the controllability and safety are improved.

[0052] Specifically, in the embodiment, the fixed plate 1 is further integrally provided with a mounting seat three 103, and an auxiliary handle 8 is fixedly installed on the side of the mounting seat three 103 away from the circular pipe belt sander 9. The auxiliary handle 8 is arranged close to the mounting seat one 101, and the auxiliary handle 8 is arranged to assist in operating the circular pipe belt sander 9, so that the controllability and safety are improved.

[0053] Specifically, in the embodiment, in order to improve stability, the cylindrical seat 902 is coaxially arranged with the output shaft 901, and a bearing is sleeved outside the output shaft 901. The outer ring of the bearing is fixedly connected with the inner wall of the cylindrical seat 902, and the inner ring of the bearing is fixedly connected with the output shaft 901.

[0054] Specifically, in the embodiment, in order to prevent the sand belt 6 from falling off, the driven sand belt wheel one 3, the driven sand belt wheel two 4 and the driven sand belt wheel three 5 are all in the shape of an I-beam.

[0055] Specifically, in the embodiment, in order to better adapt to polishing the circular pipe, the driven sand belt wheel one 3, the driven sand belt wheel two 4 and the driven sand belt wheel three 5 are arranged in a triangular shape.

[0056] Specifically, in the embodiment, in order to still be able to use when the eccentric handle 204 is damaged, a mounting hole 205 is formed in the clamp 201, and a threaded hole corresponding to the mounting hole 205 is formed in the circular pipe belt sander 9. The clamp 201 can be fixed to the circular pipe belt sander 9 by using a screw to cooperate with the mounting hole 205 and the threaded hole, so that the practicability is improved.

[0057] In summary, the quick clamping mechanism of the circular pipe belt sander provided in the embodiment has the following advantages:

[0058] The quick clamping mechanism of the circular pipe belt sander provided in the embodiment realizes quick installation and disassembly of the overall mechanism by arranging the quick clamp 2, and greatly improves the work efficiency. Meanwhile, the design of the movable frame makes the replacement of the sand belt 6 more convenient, the arrangement of the auxiliary handle 8 and the protective cover 7 improves the controllability and safety of operation, and the bottom horizontal angle of the sand belt 6 can be conveniently adjusted to meet different use requirements.

[0059] Working principle and process:

[0060] 1, Fixed plate 1: as the support base of the whole mechanism, which is equipped with a matching seat 101, matching seat 102 and matching seat 103, and fixedly installed quick clamp 2.

[0061] 2, From the driven pulley 3 and driven pulley 4: respectively through the rotating shaft rotatingly installed in the matching seat 101 and the movable frame, and are connected with the driving pulley 5 through the sand belt 6.

[0062] 3, The driving pulley 5: fixedly installed on the output shaft 901 of the round pipe belt sander 9, drives the sand belt 6 to move.

[0063] 4, Quick clamp 2: including clamp 201, fixed block 202, locking bolt 203 and eccentric handle 204. Clamp 201 is integrally formed on fixed plate 1, and through the cooperation of locking bolt 203 and eccentric handle 204, clamp 201 is quickly clamped and loosened on the cylinder seat 902.

[0064] 5, When the eccentric handle 204 is pressed, the clamp 201 is firmly clamped on the cylinder seat 902.

[0065] 6, When the eccentric handle 204 is lifted, the clamp 201 can rotate on the cylinder seat 902, which is convenient for adjusting the bottom horizontal angle of the sand belt 6.

[0066] 7, Movable frame: including U-shaped seat 105, bolt 104, bolt 106, torsion spring 108, bent rod 107 and limiting groove 109, limiting block 110. Under the action of torsion spring 108, one side wall of U-shaped seat 105 abuts against limiting block 110, so that sand belt 6 is kept in tension state. When the bent rod 107 is pressed, the sand belt 6 is in a relaxed state, which is convenient for replacement.

[0067] 8, Auxiliary handle 8: fixedly installed on the matching seat 103, used for assisting the operation of the round pipe belt sander 9.

[0068] 9, Protective cover 7: installed on the fixed plate 1, located between the auxiliary handle 8 and the sand belt 6, used for shielding the sand belt 6 to prevent abrasion of the hand.

[0069] 10, Cylinder seat 902 and output shaft 901: the cylinder seat 902 is fixedly installed on the round pipe belt sander 9 and located at the periphery of the output shaft 901. The output shaft 901 is connected with the cylinder seat 902 through bearing to realize relative rotation.

[0070] 11, Sand belt pulley design: driven pulley 3, driven pulley 4 and driving pulley 5 are all I-shaped and triangularly distributed, so as to better adapt to the demand of polishing round pipe.

[0071] 12. The backup fixing mode: the mounting hole 205 is arranged on the clamp 201, when the eccentric handle 204 is damaged, the clamp 201 is fixed by using the screw and the threaded hole on the pipe belt sander 9.

[0072] 13. When polishing the pipe, the pipe belt sander 9 and the auxiliary handle 8 are used to place the bottom of the sand belt 6 on the upper part of the pipe, so that the pipe is located between the driven sand belt wheel one 3 and the driven sand belt wheel two 4, the pipe belt sander 9 is started, the output shaft of the pipe belt sander 9 drives the driving sand belt wheel 5 to rotate, and at the same time, the driven sand belt wheel one 3 and the driven sand belt wheel two 4 drive the sand belt 6 to rotate to polish the surface of the pipe.

[0073] Through the above design, the pipe belt sander quick clamping mechanism of the embodiment achieves the goals of quick installation, convenient sand belt replacement, safety improvement and control performance improvement.

[0074] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model, and those skilled in the art should realize that any equivalent replacement and obvious change obtained by using the content of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. A quick clamping mechanism of a round pipe belt sander, characterized by, Include: Fixed plate (1), the fixed plate (1) is integrally provided with a matching seat one (101), a matching seat two (102) and a quick clamp (2) fixedly installed respectively, wherein: The driven sand belt wheel one (3) is rotatably installed on the matching seat one (101) through the rotating shaft, the movable frame is installed on the matching seat two (102), the movable frame is rotatably installed with driven sand belt wheel two (4) on the end away from the matching seat two (102) through the rotating shaft, the driven sand belt wheel two (4) and the driven sand belt wheel one (3) are driven by sand belt (6) simultaneously and are in transmission connection with the driving sand belt wheel (5), the sand belt (6) is simultaneously sleeved on the driven sand belt wheel two (4), the driven sand belt wheel one (3) and the driving sand belt wheel (5), the driving sand belt wheel (5) is fixedly sleeved on the output shaft (901) of the round pipe sand belt machine (9); The quick clamp (2) is sleeved on the cylindrical seat (902), the cylindrical seat (902) is fixedly installed on the round pipe sand belt machine (9), and the cylindrical seat (902) is located on the periphery of the output shaft (901).

2. The quick clamping mechanism of a round pipe belt sander according to claim 1, wherein The quick clamp (2) includes a clamp (201), a locking bolt (203) and an eccentric handle (204), the clamp (201) is integrally formed on the fixed plate (1), both ends of the clamp (201) are integrally provided with a fixed block (202), the screw rod of the locking bolt (203) is movably penetrated through the two fixed blocks (202), the eccentric handle (204) is hinged on one end of the locking bolt (203), when the eccentric handle (204) is pressed tightly on the edge of the fixed plate (1), the two fixed blocks (202) are close to each other, so that the clamp (201) can be tightly clamped on the outer periphery of the cylindrical seat (902), when the eccentric handle (204) is lifted away from the edge of the fixed plate (1), the two fixed blocks (202) are away from each other, so that the clamp (201) can rotate on the outer periphery of the cylindrical seat (902).

3. The quick clamping mechanism of a round pipe belt sander according to claim 1, wherein The active frame comprises a U-shaped seat (105), a torsion spring (108) and a bent rod (107), the open end of the U-shaped seat (105) is rotatably installed on the fitting seat two (102) through a bolt one (104), and a bolt two (106) is fixedly installed in the U-shaped seat (105), the torsion spring (108) is sleeved on the bolt two (106), one torsion arm of the torsion spring (108) abuts against the closed end of the U-shaped seat (105), and the other torsion arm of the torsion spring (108) abuts against a limiting groove (109) which is formed in the fitting seat two (102), one side wall of the U-shaped seat (105) abuts against a limiting block (110) under the action of the torsion spring (108), the limiting block (110) is fixedly installed on the fitting seat two (102), and the limiting block (110) and the limiting groove (109) are located on the two sides of the U-shaped seat (105) respectively, the limiting groove (109) is arranged close to the fitting seat one (101), and the bent rod (107) is fixedly installed at the end of the closed end of the U-shaped seat (105).

4. The quick clamping mechanism of a round pipe belt sander according to claim 1, wherein The fitting seat three (103) is further integrally arranged on the fixed plate (1), and an auxiliary handle (8) is fixedly installed on the side surface of the fitting seat three (103) away from the pipe belt sander (9), and the auxiliary handle (8) is arranged close to the fitting seat one (101).

5. The quick clamping mechanism of a round pipe belt sander according to claim 4, wherein The fixed plate (1) is provided with a protective cover (7) on the side surface thereof away from the pipe belt sander (9) and is installed through a screw, and the protective cover (7) is located between the auxiliary handle (8) and the abrasive belt (6).

6. The quick clamping mechanism of a round pipe belt sander according to claim 1, wherein The cylindrical seat (902) is coaxially arranged with the output shaft (901).

7. The quick clamping mechanism of a round pipe belt sander according to claim 6, wherein The output shaft (901) is sleeved with a bearing, the outer ring of the bearing is fixedly connected with the inner wall of the cylindrical seat (902), and the inner ring of the bearing is fixedly connected with the output shaft (901).

8. The quick clamping mechanism of a round pipe belt sander according to any one of claims 1 to 7, characterized in that, The driven belt pulley one (3), the driven belt pulley two (4) and the driving belt pulley (5) are all I-shaped.

9. The quick clamping mechanism of a round pipe belt sander according to claim 8, wherein The driven belt pulley one (3), the driven belt pulley two (4) and the driving belt pulley (5) are triangularly distributed.

10. The quick clamping mechanism of a round pipe belt sander according to claim 2, wherein The clamp (201) is provided with a mounting hole (205), and the pipe belt sander (9) is provided with a threaded hole corresponding to the mounting hole (205).

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