Steel pipe cutting machine

Abstract

The present invention relates to the technical field of steel pipe cutting, and specifically discloses a steel pipe cutting machine, including a machine body, on which a cutting mechanism, a moving mechanism and a clamping mechanism are arranged, the clamping mechanism including a limiting assembly and a fixing assembly, the limiting assembly including a driving member and two limiting members, a "V"-shaped groove for placing the steel pipe is formed between the two limiting members, the driving member drives the two limiting members to move relative to each other to change the size of the "V"-shaped groove, the fixing assembly including a connecting member and a compensating structure, the connecting member is located on the upper side of the limiting member and cooperates with the machine body for lifting and lowering, the compensating structure is longitudinally opposite to the "V"-shaped groove, the compensating structure includes a plurality of compensating members, each compensating member is longitudinally slidably cooperates with the connecting member, the connecting member is elastically cooperated with the compensating member at its lower side, and the lower end of the compensating member is simultaneously in contact with each of the uppermost steel pipes in the "V"-shaped groove, and the cutting device provided by the present invention improves the cutting efficiency and cutting quality of the steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe cutting, and in particular to a steel pipe cutting machine. Background Art

[0002] As a material used to build temporary or permanent ladders, steel pipes need to be cut according to the design requirements of the ladder during the production process. In related technologies, steel pipes are mostly cut by cutting machines. In order to ensure the stability of the steel pipes during the cutting process and improve the cutting quality of the steel pipes, they need to be fixed and limited during the cutting process.

[0003] The patent document with the authorization announcement number CN218836299U discloses an air-conditioning copper tube cutting machine, including a workbench, a limiting mechanism and a cutter, the limiting mechanism includes a plurality of transmission shafts, and each transmission shaft is sleeved with a transmission roller, a mounting frame is fixedly installed on the right side of the upper surface of the workbench, and connecting seats are fixedly installed on the left and right sides of the top of the mounting frame, a double-rotation screw is rotatably installed between the two connecting seats, and a movable seat is threadedly connected to the left and right sides of the double-rotation screw, and a connecting rod is movably installed between the fixed seat and the movable seat, and a plurality of extrusion rollers are movably installed at equal intervals below the connecting plate; the cutting machine provided by the patent document limits the copper tube by the limiting mechanism, so that the copper tube remains stable while moving with the cutting action.

[0004] The cutting machine provided in the above patent document is not convenient for cutting multiple tubes because the tubes to be cut are round tubes. When cutting multiple tubes, the tubes are prone to sliding, making it difficult to ensure the stability of the tubes during cutting. This results in low efficiency of the tube cutting operation in the actual production process. Summary of the invention

[0005] The present invention provides a steel pipe cutting machine, aiming to solve the problem in the related art that when a cutting machine is used to cut steel pipes, it is inconvenient to fix multiple steel pipes at the same time during the cutting process, which affects the cutting efficiency of the steel pipes.

[0006] A steel pipe cutting machine of the present invention comprises a machine body, on which a cutting mechanism for cutting steel pipes and a moving mechanism for pushing the steel pipes to move are provided, and a clamping mechanism is also provided on the machine body, and the clamping mechanism comprises a limiting component and a fixing component;

[0007] The limiting assembly includes a driving member and two limiting members, a "V"-shaped groove for placing the steel pipe is formed between the two limiting members, and the driving member drives the two limiting members to move relative to each other to change the size of the "V"-shaped groove;

[0008] The fixing assembly includes a connecting piece and a compensation structure, wherein the connecting piece is located on the upper side of the limiting piece and cooperates with the lifting and lowering of the machine body, the compensation structure is longitudinally opposite to the "V"-shaped groove, and the compensation structure includes a plurality of compensation pieces, each of which is longitudinally slidably cooperates with the connecting piece, and the connecting piece is elastically cooperated with the compensation piece at its lower side, and the lower end of the compensation piece is simultaneously in contact with the uppermost steel pipes in the "V"-shaped groove.

[0009] While ensuring the stability of steel pipe cutting, the cutting efficiency is improved. The limiting components and fixing components of the clamping mechanism cooperate to fix multiple steel pipes at the same time. Each steel pipe is placed in a "V"-shaped groove. Each "V"-shaped groove adapts to the number of steel pipes to change its own space size. The compensation parts of the compensation structure are abutted against the steel pipes on the top layer to achieve the requirement of fixing multiple steel pipes at the same time, effectively ensuring the stability of each steel pipe during the cutting process, satisfying the cutting operation of the cutting device on multiple steel pipes at the same time, and greatly improving the work efficiency of the steel pipe cutting operation.

[0010] Preferably, the fixing assembly includes at least two groups of the compensation structures, and the compensation parts of the two groups of the compensation structures are staggered along the length direction of the steel pipe.

[0011] When the connecting piece drives each compensating piece to move downward to press the steel pipe, each compensating piece can correspond to and abut against the upper end of the steel pipe and the gap between the steel pipes respectively, so as to fully limit the position of the steel pipe and reduce the change of the position of the steel pipe during cutting.

[0012] Preferably, the fixing component also includes adjusting parts whose number is consistent with that of the compensation structures and which are connected one-to-one, the adjusting parts slidingly cooperate with the connecting parts, and the compensation parts of the compensation structures in the same group are horizontally or longitudinally slidably cooperated with the same adjusting part at the same time, and the clamping mechanism also includes an adjusting component, which is used to adjust the relative position of the adjusting parts and the connecting parts.

[0013] Preferably, a connecting groove and a plurality of adjusting grooves are provided in the adjusting member, the connecting groove is arranged along the length direction of the adjusting member, the adjusting grooves are arranged longitudinally, the connecting groove is connected to the adjusting grooves, the spacing between the adjusting grooves is adapted to the spacing between two adjacent compensation members, the compensation members are simultaneously opposite to or staggered with the adjustment grooves, and the compensation member is fixed relative to the adjusting member in the longitudinal direction when located in the connecting groove.

[0014] Preferably, the adjusting assembly includes a rotating member, an adjusting rod and a telescopic rod, the rotating member is rotatably matched with the connecting member, the length direction of the adjusting member is perpendicular to the length direction of the steel pipe, the two ends of the telescopic rod are respectively hinged to the length ends of the two adjusting members, the telescopic rod is rotatably matched with the connecting member through a rotating shaft, one end of the adjusting rod is connected to one of the adjusting members, the adjusting rod is slidably matched with the connecting member along the length direction of the adjusting member hinged thereto, the other end of the adjusting member is provided with a long guide groove, and a rotating part is eccentrically provided on the rotating member, and the rotating part is slidably matched with the guide groove.

[0015] Reduce the influence of vibration during cutting operation on cutting flatness. When the adjusting member slides relative to the connecting member, the connecting parts of each compensating member are simultaneously located in the connecting groove, or are simultaneously opposite to each adjusting groove. When the connecting part is located in the connecting groove, the connecting groove limits the longitudinal movement of the connecting part, so that the compensating member is fixed in the longitudinal direction. When the connecting part is located in the adjusting groove, it can move longitudinally under the elastic force of the spring. Different groups of compensating members are respectively fixedly abutted or elastically abutted against the steel pipe, which can effectively reduce the vibration of the steel pipe in the longitudinal direction and ensure the neatness of the cutting surface.

[0016] In addition, when the uppermost steel pipe is missing, the compensating part that cooperates with the longitudinal sliding of the adjusting part can automatically supplement the missing position to prevent the steel pipe from rolling in the horizontal direction, so as to ensure the stability of the fixation of each steel pipe when the upper steel pipe is missing.

[0017] Preferably, the adjustment assembly further comprises a rack, the rack is slidably matched with the connecting member, the rack is fixed relative to the limiting member, and the lower end portion of the rotating member extends to the lower side of the connecting member and meshes with the rack.

[0018] The working flexibility of the clamping mechanism is improved, so that the rotating part can automatically rotate to adapt to the change in the number of steel pipes and drive the adjusting part to move.

[0019] Preferably, the compensating part includes a fixing part and a connecting part, the connecting part is longitudinally slidably matched with the connecting part, the lower end of the connecting part is fixed to the fixing part, the connecting part is provided with a spring on the lower side of the connecting part, and the bottom end of the connecting part is in an arc shape.

[0020] Preferably, there are two groups of clamping mechanisms, the two groups of clamping mechanisms work synchronously, and the cutting mechanism extends between the two groups of clamping mechanisms to cut the steel pipe.

[0021] The stability during steel pipe cutting is further improved. By arranging two sets of clamping mechanisms at the front and rear sides of the steel pipe cutting position, the stability of the steel pipe cutting position can be effectively guaranteed and the cutting effect of the steel pipe can be improved.

[0022] Preferably, the moving mechanism includes a moving part, a screw rod and a motor, the screw rod is rotatably arranged on the machine body, the driving end of the motor is fixed to one end of the screw rod, the bottom end of the moving part is in contact with the upper end surface of the machine body, the moving part is threadedly matched with the screw rod, the moving part is provided with a groove for placing a steel pipe, and the moving part is in contact with the end of the steel pipe.

[0023] Preferably, two clamping blocks are provided in the movable member, a "V"-shaped groove is formed between the two clamping blocks, and the two clamping blocks are slidably matched with the movable member to change the size of the "V"-shaped groove.

[0024] The beneficial effects of the present invention are:

[0025] (1) While ensuring the stability of steel pipe cutting, the cutting efficiency is improved. The limit assembly and the fixing assembly of the clamping mechanism cooperate to fix multiple steel pipes at the same time. Each steel pipe is placed in a "V"-shaped groove. The "V"-shaped groove adapts to the number of steel pipes and changes its own space size. The compensation parts of the compensation structure are in contact with the steel pipes on the top layer to achieve the requirement of fixing multiple steel pipes at the same time, effectively ensuring the stability of each steel pipe during the cutting process, satisfying the cutting operation of the cutting device on multiple steel pipes at the same time, and greatly improving the work efficiency of the steel pipe cutting operation.

[0026] (2) Reduce the influence of vibration during cutting operation on cutting flatness. When the adjusting member slides relative to the connecting member, the connecting parts of each compensating member are simultaneously located in the connecting groove, or are simultaneously opposite to each adjusting groove. When the connecting part is located in the connecting groove, the connecting groove limits the longitudinal movement of the connecting part, so that the compensating member is fixed in the longitudinal direction. When the connecting part is located in the adjusting groove, it can move longitudinally under the elastic force of the spring. Different groups of compensating members are respectively fixedly abutted or elastically abutted against the steel pipe, which can effectively reduce the vibration of the steel pipe in the longitudinal direction and ensure the neatness of the cutting surface.

[0027] In addition, when the uppermost steel pipe is missing, the compensating part that cooperates with the longitudinal sliding of the adjusting part can automatically supplement the missing position to prevent the steel pipe from rolling in the horizontal direction, so as to ensure the stability of the fixation of each steel pipe when the upper steel pipe is missing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0030] Figure 3 This is a state diagram of the clamping mechanism fixing the steel pipe when the steel pipe is not missing in the present invention.

[0031] Figure 4This is a state diagram of the clamping mechanism fixing the steel pipe when the upper steel pipe is missing in the present invention.

[0032] Figure 5 yes Figure 4 Enlarged view of part A.

[0033] Figure 6 It is a schematic diagram of the structure of the two limiting members plugged in and matched in the present invention.

[0034] Figure 7 It is a schematic diagram of the structure of the compensation component in the present invention.

[0035] Reference numerals:

[0036] 1. Machine body; 11. Cutting mechanism; 2. Moving part; 21. Clamping block; 22. Screw rod; 3. Limiting part; 31. Driving part; 32. Connecting part; 33. Compensating part; 331. Connecting part; 332. Fixing part; 34. Adjusting part; 341. Connecting groove; 342. Adjusting groove; 4. Rack; 41. Rotating part; 411. Rotating part; 42. Telescopic rod; 43. Adjusting rod; 431. Guide groove; 5. Steel pipe. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figure 1 As shown, the steel pipe cutting machine of the present invention includes a body 1, on which a clamping mechanism, a moving mechanism and a cutting mechanism 11 are provided. The cutting mechanism 11 is used to cut the steel pipe 5. The clamping mechanism clamps and fixes multiple steel pipes 5 to be cut at the same time to avoid the steel pipe 5 from moving during the cutting process of the steel pipe 5 by the cutting mechanism 11, thereby ensuring the cutting quality of the steel pipe 5. The moving mechanism is used to push each steel pipe 5 to move synchronously a certain distance according to the processing requirements after a cutting operation is completed, thereby completing automatic multiple cutting operations on each steel pipe 5.

[0039] like Figure 2 and Figure 6As shown, the clamping mechanism includes a limit component and a fixed component, the limit component includes a driving member 31 and a limit component 3, there are two limit components 3, the two limit components 3 are slidably matched with the machine body 1 in a direction perpendicular to the length of the steel pipe 5, the driving member 31 drives the two limit components 3 to slide relative to each other synchronously, wherein the driving member 31 can be a cylinder, there are two driving members 31, the two driving members 31 synchronously drive the two limit components 3 to move, a "V"-shaped groove for placing the steel pipe 5 is formed between the two limit components 3, and the size of the "V"-shaped groove is changed when the driving member 31 drives the two limit components 3 to move relative to each other. Specifically, the two limit components 3 are relatively provided with a plurality of staggered groove bodies, and the two limit components 3 are plugged into and matched with each groove body when they move relative to each other. After the steel pipe 5 to be cut is placed in the "V"-shaped groove, it is arranged in the shape of the "V"-shaped groove, and the fixed component is used to apply pressure to each uppermost steel pipe 5 on the upper side of the "V"-shaped groove, so that each steel pipe 5 is stably placed in the "V"-shaped groove.

[0040] like Figures 2 to 4 As shown, the fixing assembly includes a connecting member 32 and a compensation structure. The connecting member 32 is located on the upper side of the limiting member 3 and cooperates with the lifting of the body 1. The lifting action of the connecting member 32 can be controlled by the cylinder. The compensation structure is longitudinally opposite to the "V"-shaped groove. The compensation structure includes a plurality of compensation members 33. Each compensation member 33 is longitudinally slidably matched with the connecting member 32, as shown in FIG. Figure 7 As shown, the compensating member 33 includes a fixing portion 332 and a connecting portion 331, the connecting portion 331 is rod-shaped, the fixing portion 332 is block-shaped, and the lower end surface of the fixing portion 332 is arc-shaped. The connecting member 32 is provided with a plurality of through holes, and the connecting portion 331 is longitudinally slidably matched with the connecting member 32 through the through holes, and the lower end portion of the connecting member 32 is fixed to the fixing portion 332. The connecting portion 331 is partially sleeved with a spring on the lower side of the connecting member 32, and the upper end of the spring abuts against the lower end surface of the connecting member 32, and the lower end surface of the spring abuts against the fixing portion 332. After the connecting member 32 moves downward, the connecting portion 331 abuts against the upper steel pipe 5 in the "V"-shaped groove under the elastic force of the spring, so as to ensure the stability of the position of each steel pipe 5 during the cutting process.

[0041] In order to further improve the stability of each steel pipe 5 during the cutting process, there are at least two groups of compensation structures, and the compensation parts 33 on the two groups of compensation mechanisms are staggered along the length direction of the steel pipe 5, that is, when the connecting member 32 drives each compensation part 33 to move down and press the steel pipe 5, each compensation part 33 can respectively correspond to and abut against the upper end of the steel pipe 5 and the gap between the steel pipes 5, so as to fully limit the position of the steel pipe 5 and reduce the change of the position of the steel pipe 5 during cutting.

[0042] When the cutting mechanism 11 cuts the steel pipe 5, the steel pipe 5 will inevitably vibrate. Each compensation member 33 elastically contacts the steel pipe 5. During the cutting process, the steel pipe 5 may still vibrate in the longitudinal direction, which may affect the flatness of the cut surface of the steel pipe 5. In addition, when cutting multiple steel pipes 5 at the same time, especially when cutting the last few steel pipes 5 of a batch, due to the number of steel pipes 5 placed, the uppermost steel pipe 5 may be missing and cannot be fully laid.

[0043] In order to reduce the impact on the fixing stability of the steel pipe 5, a part of the compensation part 33 needs to be elastically abutted against the steel pipe 5, so as to automatically supplement the missing position when the uppermost steel pipe 5 is missing, prevent the steel pipe 5 from rolling in the horizontal direction, and limit the longitudinal movement of a part of the compensation part 33, so that the compensation part 33 is fixedly abutted against the steel pipe 5.

[0044] In order to solve the above problems and improve the cutting quality of the steel pipe 5, the fixing assembly also includes an adjusting member 34. The number of adjusting members 34 is consistent with the number of compensation structures. Each adjusting member 34 corresponds to each compensation structure one by one. The adjusting member 34 slides with the connecting member 32. The adjusting member 34 slides relative to the connecting member 32 in a direction perpendicular to the length of the steel pipe 5. The sliding direction of the adjusting member 34 is consistent with its length direction. Each compensation member 33 of the same group of compensation structures can slide with the adjusting member 34 in the horizontal direction at the same time, or slide with the adjusting member 34 in the vertical direction at the same time. The adjusting member 34 is provided with a horizontal connecting groove 341 and a vertical adjusting groove 342. The adjusting member 34 is provided with a horizontal connecting groove 341 and a vertical adjusting groove 342. There are multiple grooves 342 and they correspond to each compensation member 33 one by one. The connecting grooves 341 are connected to each adjustment groove 342 at the same time. The connecting portion 331 of the compensation member 33 extends into the adjustment member 34 and slidably cooperates with the connecting groove 341. When the adjustment member 34 slides relative to the connecting member 32, the connecting portion 331 of each compensation member 33 is simultaneously located in the connecting groove 341, or is simultaneously opposite to each adjustment groove 342. When the connecting portion 331 is located in the connecting groove 341, the connecting groove 341 limits the longitudinal movement of the connecting portion 331, so that the compensation member 33 is fixed in the longitudinal direction. When the connecting portion 331 is located in the adjustment groove 342, it can move longitudinally under the elastic force of the spring, such as Figure 4 As shown, when the upper steel pipe 5 is missing, the compensating member 33 automatically moves downward under the elastic force of the spring to supplement the missing position, that is, when the adjusting member 34 slides, the connecting groove 341 or the adjusting groove 342 is adjusted to be relative to the connecting part 331, so as to achieve the purpose of adjusting and limiting the longitudinal movement of the compensating member 33.

[0045] like Figure 4 and Figure 5As shown, the clamping mechanism is also provided with an adjustment component for adjusting the sliding of the adjustment member 34, the adjustment component includes a rotating member 41, an adjustment rod 43 and a telescopic rod 42, the rotating member 41 is rotatably matched with the connecting member 32, the length direction of the adjusting member 34 is perpendicular to the length direction of the steel pipe 5, both ends of the telescopic rod 42 are hinged with the length ends of the two adjusting members 34 at the same time, the telescopic rod 42 is rotatably matched with the connecting member 32 through a rotating shaft, one end of the adjustment rod 43 is connected to an adjustment member 34, the adjustment rod 43 is slidably matched with the connecting member 32 along the length direction of the adjustment member 34 hinged thereto, the other end of the adjusting member 34 is provided with a long strip guide groove 431, the rotating member 41 is provided with a rotating portion 411 eccentrically, and the rotating portion 4 11 is slidably matched with the guide groove 431. When the rotating member 41 rotates, the adjusting rod 43 is pulled by the rotating part 411 to slide along the length direction of the adjusting member 34. The adjusting rod 43 pulls the adjusting member 34 connected thereto to slide. The adjusting member 34 drives another adjusting member 34 connected thereto to slide in the opposite direction through the telescopic rod 42, that is, the adjusting assembly drives the two adjusting members 34 to slide in the opposite direction at the same time, so that each compensation member 33 of one group of compensation structures is opposite to the connecting groove 341 in the adjusting member 34, and each compensation member 33 of the other group of compensation structures is opposite to the adjusting groove 342 in the adjusting member 34. The rotating member 41 can be driven to rotate by a motor. After the steel pipe 5 is loaded, the rotating member 41 is adjusted to rotate a specified angle according to the number of steel pipes 5.

[0046] In order to improve the working flexibility of the clamping mechanism, the rotating member 41 can automatically rotate to adapt to the change in the number of steel pipes 5 and drive the adjusting member 34 to move. The adjusting assembly also includes a rack 4, which is slidably matched with the connecting member 32. The rack 4 is fixed relative to the limit member 3. The lower end of the rotating member 41 extends to the lower side of the connecting member 32 and meshes with the rack 4. When the number of steel pipes 5 to be cut changes, the driving member 31 pushes the limit member 3 to move, and the rack 4 fixed relative to the limit member 3 moves synchronously with the limit member 3. When the rack 4 moves, it pushes the rotating member 41 meshed with it to rotate, and further drives the adjusting rod 43 to move accordingly through the adjusting member 34 and the telescopic rod 42.

[0047] In order to improve the fixing effect of the clamping mechanism on the steel pipe 5, the compensation structure is preferably provided with three groups, and the adjustment component includes two telescopic rods 42, one end of the two telescopic rods 42 is hinged to the middle adjustment member 34, and the other end of the two telescopic rods 42 is respectively hinged to the other two adjustment members 34.

[0048] In order to further improve the stability when cutting the steel pipe 5, two sets of clamping mechanisms can be set up, a gap is formed between the two sets of clamping mechanisms, and the two sets of clamping mechanisms work synchronously. When the cutting mechanism 11 cuts the steel pipe 5, the cutting blade extends into the cutting steel pipe 5 from the gap between the two sets of clamping mechanisms.

[0049] The moving mechanism includes a moving part 2, a screw rod 22 and a motor. The screw rod 22 is rotatably arranged on the machine body 1. The driving end of the motor is fixed to one end of the screw rod 22, and the bottom end of the moving part 2 is fitted with the upper end surface of the machine body 1. The moving part 2 is threadedly matched with the screw rod 22. A groove for placing the steel pipe 5 is provided on the moving part 2, and the moving part 2 abuts against the end of the steel pipe 5. Two clamping blocks 21 are provided in the moving part 2, and a "V"-shaped groove is formed between the two clamping blocks 21. The two clamping blocks 21 slide with the moving part 2 and change the size of the "V"-shaped groove. After a cutting operation is completed, the connecting part 32 moves up, driving each compensation part 33 to disengage from the steel pipe 5. Then the motor drives the screw rod 22 to rotate, driving the moving part 2 to slide in contact with the machine body 1, and pushing the steel pipe 5 to move relative to the clamping mechanism. When the next cutting position is opposite to the cutting mechanism 11, the motor stops working, and the connecting part 32 moves down until each compensation part 33 abuts against each steel pipe 5 again.

[0050] The steel pipe cutting machine provided by the present invention can stably clamp multiple steel pipes at the same time, thereby ensuring the cutting efficiency and cutting quality of the steel pipes.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A steel pipe cutting machine, comprising a machine body, on which a cutting mechanism for cutting the steel pipe and a moving mechanism for pushing the steel pipe to move are arranged, characterized in that: The machine body is also provided with a clamping mechanism, which includes a limiting component and a fixing component; The limiting assembly includes a driving member and two limiting members, a "V"-shaped groove for placing the steel pipe is formed between the two limiting members, and the driving member drives the two limiting members to move relative to each other to change the size of the "V"-shaped groove; The fixing assembly includes a connecting piece and a compensation structure. The connecting piece is located on the upper side of the limiting piece and cooperates with the lifting of the machine body. The compensation structure is longitudinally opposite to the "V"-shaped groove. The compensation structure includes a plurality of compensation pieces. Each compensation piece is longitudinally slidably matched with the connecting piece. The connecting piece is elastically matched with the compensation piece at its lower side. The lower end of the compensation piece is simultaneously in contact with each of the uppermost steel pipes in the "V"-shaped groove. The fixing assembly includes at least two groups of compensation structures, and the compensation parts of the two groups of compensation structures are staggered along the length direction of the steel pipe; The fixing assembly also includes adjusting pieces that are the same in number as the compensation structures and are connected one-to-one. The adjusting pieces are slidably matched with the connecting pieces. The compensating pieces of the same group of compensation structures are simultaneously horizontally slidably matched with the same adjusting piece or longitudinally slidably matched. The clamping mechanism also includes an adjusting assembly, which is used to adjust the relative position of the adjusting piece and the connecting piece. The adjusting member is provided with a connecting groove and a plurality of adjusting grooves, the connecting groove is arranged along the length direction of the adjusting member, the adjusting grooves are arranged longitudinally, the connecting groove is connected with the adjusting grooves, the spacing between the adjusting grooves is adapted to the spacing between two adjacent compensating members, the compensating members are simultaneously opposite or staggered with the adjusting grooves, and the compensating members are fixed relative to the adjusting members in the longitudinal direction when they are located in the connecting grooves; The compensating part includes a fixing part and a connecting part. The connecting part and the connecting part are longitudinally slidably matched. The lower end of the connecting part is fixed to the fixing part. The connecting part is sleeved with a spring on the lower side of the connecting part. The bottom end of the fixing part is in an arc shape.

2. The steel pipe cutting machine according to claim 1, characterized in that: The adjusting assembly includes a rotating part, an adjusting rod and a telescopic rod. The rotating part is rotatably matched with the connecting part. The length direction of the adjusting part is perpendicular to the length direction of the steel pipe. The two ends of the telescopic rod are respectively hinged to the length ends of the two adjusting parts. The telescopic rod is rotatably matched with the connecting part through a rotating shaft. One end of the adjusting rod is connected to an adjusting part. The adjusting rod slides with the connecting part along the length direction of the adjusting part hinged thereto. The other end of the adjusting rod is provided with a long guide groove. A rotating part is provided eccentrically on the rotating part, and the rotating part slides with the guide groove.

3. The steel pipe cutting machine according to claim 2, characterized in that: The adjustment component also includes a rack, which is slidably matched with the connecting member, and the rack is fixed relative to the limiting member. The lower end of the rotating member extends to the lower side of the connecting member and meshes with the rack.

4. The steel pipe cutting machine according to claim 1, characterized in that: There are two groups of clamping mechanisms, the two groups of clamping mechanisms work synchronously, and the cutting mechanism extends into between the two groups of clamping mechanisms to cut the steel pipe.

5. The steel pipe cutting machine according to claim 1, characterized in that: The moving mechanism includes a moving part, a screw rod and a motor. The screw rod is rotatably arranged on the machine body. The driving end of the motor is fixed to one end of the screw rod. The bottom end of the moving part is fitted with the upper end surface of the machine body. The moving part and the screw rod are threadedly matched. A groove body for placing a steel pipe is provided on the moving part, and the moving part abuts against the end of the steel pipe.

6. The steel pipe cutting machine according to claim 5, characterized in that: Two clamping blocks are arranged in the moving part, and a "V"-shaped groove is formed between the two clamping blocks. The two clamping blocks are slidably matched with the moving part and change the size of the "V"-shaped groove.

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