CN219188818U - Pipe cutting machine convenient to clamp - Google Patents

Abstract

A pipe cutting machine that is easy to clamp, including a base, a hydraulic rod, a support plate, a cutting motor, an inner cavity, a first chute, a cylinder, a connecting rod, a moving column and a fixed block, and the fixed block and the top of the moving column are both fixed There is a mounting block, the top of the mounting block is detachably connected with a clamping plate, the bottom of the clamping plate is fixed with an inserting block, a connection hole is opened on the inserting block, and a slot for inserting the inserting block is opened at the top of the mounting block, the mounting block There is a cavity inside, and a through hole corresponding to the connection hole is communicated between the cavity and the slot. A pin is slidably connected to the cavity. One end of the pin is located in the cavity, and the other end of the pin is penetrated through the through hole to connect In the hole, the cavity is also provided with a moving structure for moving the bolt. The utility model can quickly and conveniently replace the clamping board.

Description

An easy-to-clamp pipe cutting machine

technical field

The utility model relates to the technical field of pipe cutting equipment, in particular to a pipe cutting machine which is convenient for clamping.

Background technique

Pipe is the material used to make pipe fittings. Different pipe fittings use different pipe materials. The quality of the pipe directly determines the quality of the pipe fittings. Construction projects, power plants, chemical plants, etc. often use this type of pipe.

A pipe cutting machine is needed in the pipe processing process. The current existing pipe cutting machines have low cutting quality. When people use the pipe cutting machine, they cannot clamp the two ends of the pipe, which causes the pipe to be cut due to the influence of gravity. The downward slope causes the cutting surface to be uneven, which is inconvenient for people to use and reduces the practicability of the pipe cutting machine.

The Chinese patent with the authorized notification number CN210305963U discloses a pipe cutting machine with high cutting quality, including a base, the front and rear sides of the top left side of the base are fixedly connected with a fixed block, and the top of the fixed block is fixedly connected with a first card. The plate, the front and the back of the inner cavity of the base are provided with limiting devices, and the bottom of the inner cavity of the base is provided with a sliding device. The utility model achieves the goal of cutting through the mutual cooperation of the base, the fixed block, the first clamping plate, the limiting device, the sliding device, the driving device, the moving plate, the moving column, the second clamping plate, the hydraulic rod, the supporting plate and the cutting motor. The advantage of high cutting quality solves the problem of low cutting quality of the existing pipe cutting machine. When people use the pipe cutting machine, they can clamp both ends of the pipe, so that the pipe will not be cut downward due to the influence of gravity. The inclination causes the cutting surface to be uneven, which is convenient for people to use and improves the practicability of the pipe cutting machine.

However, in this utility model, the first clamp and the second clamp are both fixedly connected. When the first clamp and the second clamp are damaged, the pipe is too large or too small, the first clamp and the second clamp Due to reasons such as the inability of the clamping plates to effectively clamp the pipe material, when the first clamping plate and the second clamping plate need to be replaced, the first clamping plate and the second clamping plate cannot be easily replaced.

Therefore, the utility model proposes a technical solution to solve the above-mentioned problem that the clamp cannot be easily replaced.

Utility model content

Aiming at the shortcomings of the existing technology, the purpose of this utility model is to provide a pipe cutting machine that is easy to clamp, aiming at achieving the technical effect of detachable connection between the clamping plate and the mounting block, thereby facilitating the disassembly and assembly of the clamping plate.

A pipe cutting machine that is convenient for clamping, including a base, a hydraulic rod, a support plate and a cutting motor. An inner cavity is opened inside the base, and two holes leading to the outside of the base are opened on the top cavity wall of the inner cavity. The first chute, the inner cavity is equipped with a cylinder, the piston rod of the cylinder is fixed with a connecting rod perpendicular to it, the top of the connecting rod is fixed on the front and rear sides, and the two moving columns The columns correspond to the two first chute respectively, the moving column slides along the first chute and its top end passes through the first chute, and the top of the base is also fixed with two fixed blocks, which respectively correspond to Two moving columns, the top of the fixed block and the moving column are fixed with a mounting block, the top of the mounting block is detachably connected with a clamping plate, the bottom of the clamping plate is fixed with an inserting block, and the inserting block is There is a connection hole, the top of the installation block is provided with a slot that can be inserted into the block, the inside of the installation block is provided with a cavity, and there is a communication channel corresponding to the connection hole between the cavity and the slot. hole, the cavity is slidably connected with a pin, one end of the pin is located in the cavity, the other end of the pin penetrates into the connection hole through the through hole, and a moving structure for moving the pin is also arranged in the cavity .

By adopting the above-mentioned technical scheme, when the clamping board needs to be disassembled, the plug pin is moved by the moving structure, so that the plug pin is retracted into the cavity, and the end of the plug pin originally inserted into the connection hole through the through hole is pulled out from the connection hole, and the plug block is no longer It is fixed in the slot, and the plug can be pulled out from the slot by moving the plug up, so that the card board can be removed from the mounting block. In the same way, when the card board needs to be installed, first retract the latch into the cavity by moving the structure, and then insert the plug into the slot. When the plug is completely inserted into the slot, the position of the connecting hole corresponds to the through hole. Finally, by moving the structure, the plug pin can be inserted into the connection hole through the through hole again to fix the plug block in the slot, thereby fixing the card board on the mounting block. The utility model can quickly and conveniently replace the clamping board.

Further setting of the utility model: the first sliding hole leading to the outside of the base is opened on the top wall of the cavity, the moving structure includes a moving block and a push rod, and the moving block is slidably connected in the cavity, One side of the moving block is fixedly connected with the latch and is provided with a first inclined surface, the other side of the moving block is fixedly connected with the wall of the cavity with a first spring, and the top end of the push rod is located on the base above, the bottom end of the push rod penetrates into the cavity through the first sliding hole and is provided with a second inclined surface matching the first inclined surface.

By adopting the above technical solution, when it is necessary to move the bolt through the moving structure to retract the bolt into the cavity, press the push rod downward, the push rod moves downward along the first sliding hole, and the second inclined surface is pressed against the first inclined surface. On the surface, the force pressed on the first inclined surface can be decomposed into a lateral force. Under the action of this force, the moving block slides along the cavity towards the direction away from the inserting block, and the moving block drives the latch to retract into the cavity. The pin is extracted from the connecting hole. And at this time, the first spring is compressed to form a rebound force toward the plug. When it is necessary to reinsert the bolt into the connection hole through the moving structure, release the pressure on the push rod, and the moving block can move toward the plug along the cavity under the rebound force of the first spring, thereby driving the bolt to reinsert. Insert into the connecting hole.

Further setting of the present utility model: the hole walls on both sides of the first sliding hole are provided with second sliding grooves, and the push rod is fixed with a sliding sliding groove for inserting into the second sliding groove and sliding in the second sliding groove. piece.

By adopting the above technical solution, when the push rod moves up and down, the slider slides up and down in the second chute, on the one hand, the stability of the push rod when moving up and down is improved, and on the other hand, when the slider and the second chute When the groove walls are in contact, the push rod cannot continue to move, thereby preventing the push rod from breaking away from the first sliding hole.

Further setting of the present utility model: the cavity wall at the top of the cavity is provided with a socket leading to the outside of the base, the moving structure includes a fixed pulley and a sliding sleeve, and the fixed pulley is connected to the bottom of the cavity through a pin shaft. On the front and rear sides of the cavity wall, the sliding sleeve is fixed on the bottom side cavity wall of the cavity and is located between the fixed pulley and the through hole. The end of the sliding sleeve close to the through hole is provided with a third chute. The groove bottom of the third chute is provided with a second slide hole leading to the outside of the sliding sleeve, and the end of the bolt that is away from the insert block is inserted into the third chute in a sliding connection and is fixed with a slide bar, the slide bar A second spring is sheathed on the outside of the second spring, one end of the second spring is fixedly connected with the latch, the other end of the second spring is fixedly connected with the groove bottom wall of the third chute, and the other end of the slide bar passes through the first The second sliding hole passes through the sliding sleeve and is fixed with a pull cord. The other end of the pull cord goes around the fixed pulley and is fixed with a plug for insertion into the jack. The top end of the plug passes through the jack and is fixed with a limit plate. , the part of the stay cord located between the fixed pulley and the sliding sleeve is horizontal, and the part of the stay cord located between the plug and the fixed pulley is vertical.

By adopting the above-mentioned technical solution, when it is necessary to move the plug through the moving structure to retract the plug into the cavity, the limit plate is pulled upward, and the limit plate drives the plug to move upward, and the plug is pulled out from the socket, and the plug is passed through the plug. Pull the rope upwards to change the direction of the force through the fixed pulley. The other end of the rope pulls the slide bar laterally. The slide bar is gradually pulled out from the sliding sleeve along the second slide hole. The chute moves into the sliding sleeve, and the other end of the bolt can be drawn out from the connecting hole. And at this time, the second spring is compressed to form a rebound force towards the plug. When the bolt needs to be reinserted into the connecting hole by moving the structure, the worker pinches the limiting plate but does not apply force to the limiting plate to limit its movement. Under the effect of the rebound force of the second spring, one end of the latch is reinserted in the connecting hole, and the plug is also reinserted in the jack, and the limiting plate is stuck on the top of the base to prevent the plug from falling into the cavity.

A further setting of the utility model: a pull ring is fixed on the top of the limiting plate.

By adopting the above technical solution, the limiting plate can be pulled more conveniently through the pull ring.

A further setting of the utility model: an annular rubber ring is fixed on the inner hole wall of the jack.

By adopting the above technical solution, the arrangement of the annular rubber ring improves the stability when the plug is inserted into the socket.

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

A pipe cutting machine that is easy to clamp. When the clamping plate needs to be disassembled, the bolt is moved through the moving structure to retract the bolt into the cavity, and the end of the bolt that was originally inserted into the connecting hole through the through hole is pulled out from the connecting hole. The plug-in block is no longer fixed in the slot, and the plug-in block can be pulled out from the slot by moving up the plug-in block, thereby removing the card board. In the same way, when the card board needs to be installed, first retract the latch into the cavity by moving the structure, and then insert the plug into the slot. When the plug is completely inserted into the slot, the position of the connecting hole corresponds to the through hole. Finally, by moving the structure, the latch can be inserted into the connecting hole again through the through hole to fix the plug in the slot, thereby completing the fixed installation of the card board. The utility model can quickly and conveniently replace the clamping board.

Description of drawings

Fig. 1 is the sectional view of embodiment one;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is the sectional view of mounting block and clamping plate in embodiment two;

Fig. 4 is the enlarged view of place B in Fig. 3;

FIG. 5 is an enlarged view at point C in FIG. 3 .

Reference signs: 1, base; 2, hydraulic rod; 3, support plate; 4, cutting motor; 5, inner chamber; 6, first chute; 7, cylinder; 8, connecting rod; 9, moving column; 10 1, fixed block; 11, installation block; 12, clamping plate; 13, insert block; 14, connection hole; 15, slot; 16, cavity; 17, through hole; 18, latch; 19, first slide hole; 20, moving block; 21, push rod; 22, first inclined surface; 23, first spring; 24, second inclined surface; 25, second chute; 26, slider; 27, jack; 28, fixed Pulley; 29, sliding sleeve; 30, the third chute; 31, the second slide hole; 32, slide bar; 33, the second spring; 34, stay rope; 35, plug; 36, limit plate; 37, pull ring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one:

A pipe cutting machine that is easy to clamp, as shown in Figures 1 and 2, includes a base 1, a hydraulic rod 2, a support plate 3, and a cutting motor 4. The base 1 is provided with an inner cavity 5, and the top of the inner cavity 5 There are two first slide grooves 6 leading to the outside of the base 1 on the wall of the cavity. A cylinder 7 is installed in the cavity 5. A connecting rod 8 arranged perpendicularly to the piston rod of the cylinder 7 is fixed. The top of the connecting rod 8 front and rear Both sides are fixed with moving columns 9, and the two moving columns 9 respectively correspond to the two first chute 6, the moving column 9 slides along the first chute 6 and its top end passes through the first chute 6, the top of the base 1 Two fixed blocks 10 are also fixed, and the two fixed blocks 10 correspond to the two moving columns 9 respectively. The technical problem to be solved by the utility model is the problem that the first clamp and the second clamp cannot be easily replaced in the Chinese patent CN210305963U, which has a high cutting quality pipe cutting machine. Therefore, the utility model only Make a specific description of the technical features to solve this problem. The above-mentioned structure is not specifically described in this embodiment, and reference may be made to the Chinese patent No. CN210305963U, a pipe cutting machine with high cutting quality.

Both the fixed block 10 and the top of the moving column 9 are fixed with a mounting block 11 . A clamping plate 12 is detachably connected to the top of the mounting block 11 .

An insert block 13 is fixed on the bottom end of the clamping plate 12 , and a connecting hole 14 is opened on the insert block 13 .

The top of the mounting block 11 defines a slot 15 into which the inserting block 13 can be inserted. A cavity 16 is opened inside the mounting block 11 . A first sliding hole 19 leading to the outside of the base 1 is opened on the top wall of the cavity 16 . Both side walls of the first slide hole 19 are provided with second slide grooves 25 . A through hole 17 corresponding to the connection hole 14 communicates between the cavity 16 and the slot 15 . A pin 18 is slidably connected to the cavity 16 , one end of the pin 18 is located in the cavity 16 , and the other end of the pin 18 penetrates into the connection hole 14 through the through hole 17 . A moving structure for moving the bolt 18 is also provided in the cavity 16 .

The moving structure includes a moving block 20 and a push rod 21, the moving block 20 is slidably connected in the cavity 16, one side of the moving block 20 is fixedly connected with the latch 18 and is provided with a first inclined surface 22, and the other side of the moving block 20 is connected to the The first spring 23 is fixedly connected between the cavity walls of the cavity 16, the top of the push rod 21 is located above the base 1, and the bottom end of the push rod 21 penetrates into the cavity 16 through the first sliding hole 19 and is provided with a An inclined surface 22 matches a second inclined surface 24 . A sliding block 26 for inserting into the second sliding slot 25 and sliding in the second sliding slot 25 is fixed on the push rod 21 .

Working principle: when the clamping plate 12 needs to be disassembled, the push rod 21 is pressed down, and the push rod 21 moves down along the first sliding hole 19 . When the push rod 21 moves up and down, the slide block 26 slides up and down in the second chute 25, on the one hand, the stability when the push rod 21 moves up and down is improved, and on the other hand, when the slide block 26 and the second chute 25 When the groove walls are in contact, the push rod 21 cannot continue to move, thereby preventing the push rod 21 from detaching from the first sliding hole 19 . After the push rod 21 moves downward, the second inclined surface 24 is pressed against the first inclined surface 22 . The force pressing on the first inclined surface 22 can be decomposed into a lateral force, and under the action of this force, the moving block 20 slides along the cavity 16 in a direction away from the inserting block 13 . The moving block 20 drives the latch 18 to retract in the cavity 16, and the end of the latch 18 inserted into the connection hole 14 through the through hole 17 is extracted from the connection hole 14, and the plug 13 is no longer fixed in the slot 15, and the plug is moved upwards. Block 13 can pull out plug block 13 from slot 15, thereby card board 12 is detached from mounting block 11. And at this time, the first spring 23 is compressed to form a rebound force towards the inserting block 13 .

In the same way, when the card board 12 needs to be installed, first press the push rod 21 to retract the latch 18 into the cavity 16, then insert the plug 13 into the slot 15, and when the plug 13 is fully inserted into the slot 15, connect The hole 14 corresponds to the position of the through hole 17, and finally loosen the pressure on the push rod 21, and the moving block 20 can move toward the inserting block 13 along the cavity 16 under the action of the rebound force of the first spring 23, thereby driving The plug pin 18 is inserted into the connection hole 14 again through the through hole 17 , and the plug block 13 is fixed in the slot 15 , so that the card board 12 is fixedly installed on the installation block 11 .

The utility model can quickly and conveniently replace the clamping plate 12 .

Embodiment two:

The difference from Embodiment 1 is that, as shown in Fig. 3-Fig. 5, the first sliding hole 19 is no longer opened on the top wall of the cavity 16, but an insertion hole 27 leading to the outside of the base 1 is opened. , and an annular rubber ring (not shown) is fixed on the inner hole wall of the jack 27. The moving structure no longer includes the moving block 20 and the push rod 21 , but includes a fixed pulley 28 and a sliding sleeve 29 . The fixed pulley 28 is rotatably connected to the front and rear sides of the cavity 16 through a pin shaft. The sliding sleeve 29 is fixed on the bottom wall of the cavity 16 and located between the fixed pulley 28 and the through hole 17 . The end of the sliding sleeve 29 close to the through hole 17 is provided with a third sliding slot 30 , and the bottom of the third sliding slot 30 is provided with a second sliding hole 31 leading to the outside of the sliding sleeve 29 . One end of the plug pin 18 facing away from the plug block 13 is inserted into the third slide slot 30 in a sliding connection and is fixed with a slide bar 32 . A second spring 33 is sleeved on the outside of the slide bar 32 , one end of the second spring 33 is fixedly connected to the latch 18 , and the other end of the second spring 33 is fixedly connected to the bottom wall of the third sliding groove 30 . The other end of the sliding rod 32 passes through the sliding sleeve 29 through the second sliding hole 31 and is fixed with a stay cord 34 , and the other end of the stay cord 34 goes around the fixed pulley 28 and is fixed with a plug 35 for inserting into the jack 27 . The top end of the plug 35 passes through the insertion hole 27 and is fixed to the limiting plate 36 . A pull ring 37 is fixed on the top of the limiting plate 36 . The part between the fixed pulley 28 and the sliding sleeve 29 on the stay cord 34 is horizontal, and the part between the plug 35 and the fixed pulley 28 on the stay cord 34 is vertical.

Working principle: when it is necessary to move the pin 18 through the moving structure to retract the pin 18 into the cavity 16, the limit plate 36 is pulled upward through the pull ring 37, and the limit plate 36 drives the plug 35 to move upward, and the plug 35 moves upward from the plug Pull out in hole 27. Pull the stay cord 34 upwards through the plug 35, change the direction of the force through the fixed pulley 28, and the other end of the stay cord 34 pulls the slide bar 32 laterally, and the slide bar 32 is gradually pulled out from the sliding sleeve 29 along the second slide hole 31 , the sliding rod 32 drives one end of the bolt 18 to move into the sliding sleeve 29 along the third slide groove 30 , and the other end of the bolt 18 can be pulled out from the connecting hole 14 . And at this moment, the second spring 33 is compressed to form a rebound force towards the inserting block 13 . When the latch 18 needs to be reinserted into the connection hole 14 by moving the structure, the worker pinches the pull ring 37 but does not apply force to the pull ring 37 to limit its movement. Under the effect of the rebounding force of the second spring 33, one end of the latch 18 is reinserted in the connection hole 14, and the plug 35 is also reinserted in the jack 27, and the limit plate 36 is stuck on the top of the base 1 to prevent the plug 35 from falling off. into cavity 16. And the arrangement of the annular rubber ring improves the stability when the plug 35 is inserted into the socket 27 .

In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer" and "top/bottom" are based on the orientations shown in the drawings or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the utility model . In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "set with", "sleeve/connection", "connection", etc. should be understood in a broad sense, for example "Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be two components Internal connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A pipe cutting machine for easy clamping, comprising a base (1), a hydraulic rod (2), a support plate (3) and a cutting motor (4), the base (1) is provided with an inner cavity (5 ), the top end cavity wall of the inner cavity (5) is provided with two first slide grooves (6) leading to the outside of the base (1), and the inner cavity (5) is equipped with a cylinder (7), so The piston rod of the cylinder (7) is fixed with a connecting rod (8) that is vertically arranged with it, and the front and rear sides of the top of the connecting rod (8) are fixed with moving posts (9), and two of the moving posts (9) ) respectively correspond to two first chute (6), the moving column (9) slides along the first chute (6) and its top end passes through the first chute (6), the base (1) Two fixed blocks (10) are also fixed on the top, and the two fixed blocks (10) correspond to two moving columns (9) respectively, and it is characterized in that: the tops of the fixed blocks (10) and the moving columns (9) are all fixed There is a mounting block (11), the top of the mounting block (11) is detachably connected with a clamping plate (12), the bottom end of the clamping plate (12) is fixed with an inserting block (13), and the inserting block (13) ) is provided with a connection hole (14), the top of the installation block (11) is provided with a slot (15) for insertion of the insert block (13), and the interior of the installation block (11) is provided with a cavity ( 16), a through hole (17) corresponding to the connection hole (14) communicates between the cavity (16) and the slot (15), and a latch (18) is slidably connected in the cavity (16), One end of the bolt (18) is located in the cavity (16), the other end of the bolt (18) penetrates into the connection hole (14) through the through hole (17), and the cavity (16) is also provided with There is a moving structure for moving the latch (18). 2. A pipe cutting machine convenient for clamping according to claim 1, characterized in that: a first sliding hole ( 19), the moving structure includes a moving block (20) and a push rod (21), the moving block (20) is slidably connected in the cavity (16), and one side of the moving block (20) is connected to the latch ( 18) fixedly connected and provided with a first inclined surface (22), a first spring (23) is fixedly connected between the other side of the moving block (20) and the cavity wall of the cavity (16), and the pushing The top end of the rod (21) is located above the base (1), and the bottom end of the push rod (21) penetrates into the cavity (16) through the first slide hole (19) and is provided with a first inclined surface (22 ) to match the second inclined surface (24). 3. A pipe cutting machine that is convenient for clamping according to claim 2, characterized in that: a second chute (25) is provided on both sides of the first sliding hole (19), so that A slider (26) for inserting into the second chute (25) and sliding in the second chute (25) is fixed on the push rod (21). 4. A pipe cutting machine that is convenient for clamping according to claim 1, characterized in that: a jack (27) leading to the outside of the base (1) is opened on the wall of the top end of the cavity (16) , the moving structure includes a fixed pulley (28) and a sliding sleeve (29), and the fixed pulley (28) is connected to the front and rear sides of the cavity (16) through a pin shaft, and the sliding sleeve (29 ) is fixed on the bottom side wall of the cavity (16) and is located between the fixed pulley (28) and the through hole (17), and the end of the sliding sleeve (29) close to the through hole (17) is provided with a third A chute (30), the bottom of the third chute (30) is provided with a second slide hole (31) leading to the outside of the sliding sleeve (29), and the pin (18) is away from the plug (13) One end of one end is inserted in the 3rd chute (30) in the mode of sliding connection and is fixed with slide bar (32), and the outside of described slide bar (32) is sheathed with second spring (33), and described second spring ( One end of 33) is fixedly connected with the latch (18), the other end of the second spring (33) is fixedly connected with the groove bottom wall of the third chute (30), and the other end of the slide bar (32) passes through the first Two sliding holes (31) pass through the sliding sleeve (29) and are fixed with a stay cord (34). Plug (35), the top of the plug (35) passes through the jack (27) and fixes the limit plate (36), and the fixed pulley (28) and the sliding sleeve (29) are located on the stay rope (34). ) is horizontal, and the part between the plug (35) and the fixed pulley (28) is vertical on the stay cord (34). 5. A pipe cutting machine convenient for clamping according to claim 4, characterized in that: a pull ring (37) is fixed on the top end of the limiting plate (36). 6. A pipe cutting machine convenient for clamping according to claim 4, characterized in that: an annular rubber ring is fixed on the inner hole wall of the insertion hole (27).

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