Portable steel pipe sectioning device

Abstract

The invention relates to the field of pipe machining, in particular to a convenient steel pipe sectioning device which comprises a material preparation frame used for stacking long steel pipes, a feeding roller way used for conveying the long steel pipes, a sectioning assembly used for pushing and cutting the long steel pipes into multiple sections of short steel pipes, a discharging roller way used for sending out the short steel pipes and a material stacking frame used for stacking the short steel pipes. The section cutting assembly comprises a bearing machine body, a fixed seat fixedly arranged on the bearing machine body and a sliding seat arranged on the bearing machine body in a sliding mode, the long steel pipe penetrates through the position between the fixed seat and the sliding seat, the bearing machine body is provided with a driving part used for pushing the sliding seat to make the long steel pipe abut against the fixed seat, and a pushing and cutting block is arranged on the fixed seat in a sliding and penetrating mode; a hydraulic cylinder electrically connected to the control system is arranged on the bearing machine body, and a piston rod of the hydraulic cylinder points to the long steel pipe and is connected to the pushing block. The method has the effect that regular blade sawing is not needed.

Description

Technical Field

[0001] The present application relates to the field of pipe processing, and in particular to a convenient steel pipe cutting device. Background Art

[0002] Steel pipe processing refers to the process of subjecting steel pipes to a series of processes to achieve the desired shape, size and performance. These processes may include cutting, bending, welding, grinding, heat treatment, etc.

[0003] Steel pipes are usually longer after processing, so manufacturers will use circular saws to cut them into multiple short steel pipes based on their subsequent actual usage.

[0004] However, after long-term use, the saw blade of the circular sawing machine will produce a large degree of wear and tear, so it needs to be replaced regularly. However, the replacement of large-sized saw blades is often inconvenient to operate, which has obvious shortcomings. Summary of the invention

[0005] In order to improve the problem that saw blades need to be replaced regularly, the present application provides a convenient steel pipe cutting device.

[0006] The present application provides a convenient steel pipe cutting device adopts the following technical solution: A convenient steel pipe cutting device comprises a preparation rack for stacking long steel pipes, a feeding roller for conveying the long steel pipes, a cutting assembly for pushing and cutting the long steel pipes into multiple short steel pipes, a discharging roller for sending out the short steel pipes, and a stacking rack for stacking the short steel pipes. The cutting assembly comprises a carrying body, a fixed seat fixedly arranged on the carrying body, and a sliding seat slidably arranged on the carrying body. The long steel pipe passes through between the fixed seat and the sliding seat. A driving member for pushing the sliding seat to press the long steel pipe against the fixed seat is arranged on the carrying body. A pushing and cutting block is slidably penetrated on the fixed seat. A hydraulic cylinder electrically connected to a control system is arranged on the carrying body. The piston rod of the hydraulic cylinder points to the long steel pipe and is connected to the pushing and cutting block.

[0007] By adopting the above technical solution, the long steel pipe rolls from the preparation rack to the feeding roller, and the feeding roller pushes the long steel pipe between the fixed seat and the sliding seat. Then, under the action of the driving member, the sliding seat presses the long steel pipe against the fixed seat. Then, the control system controls the piston rod of the hydraulic cylinder to extend, so that the push-cut block pushes the long steel pipe, and the short steel pipe formed by pushing is transported to the stacking rack by the discharging roller. In the present application, the push-cut block is made of a metal with high strength and hardness. During the process of pushing and cutting the long steel pipe, it itself will hardly deform or wear. Even if there is a small deformation, it can be repaired, so it does not need to be replaced regularly, saving costs.

[0008] Optionally, a first supporting frame is arranged above the discharging roller, on which are arranged a first motor electrically connected to a control system and a first screw rod coaxially connected to an output shaft of the first motor, a sliding block is threadedly connected to the first screw rod, and the sliding block slides on the first supporting frame and is used for abutment against the end of the long steel pipe.

[0009] By adopting the above technical solution, the control system starts the first motor, and the output shaft of the first motor drives the first screw rod to rotate. Under the action of the first screw rod, the sliding block slides to the set position on the first carrier frame, thereby adjusting the inferred length of the long steel pipe through the interference between the long steel pipe and the sliding block.

[0010] Optionally, a second carrier frame is installed at the tail end of the discharging roller conveyor at a position directly above the stacking rack, and two parallel hanging rods are arranged on the second carrier frame. Each hanging rod is fastened with a guide plate through a mounting rope, and the two guide plates cooperate to form a V shape. A second motor electrically connected to the control system is also arranged on the second carrier frame, and the output shaft of the second motor is coaxially connected to a second screw rod, and two reciprocating blocks are threadedly connected to the second screw rod, and one reciprocating block corresponds to one guide plate and is rotatably connected to the guide plate.

[0011] By adopting the above technical solution, the short steel pipes falling from the tail end of the discharging roller roll onto the two guide plates, and then fall onto the stacking rack from between the bottom ends of the two guide plates. The control system starts the second motor, and the output shaft of the second motor drives the second screw to rotate. Under the action of the second screw, the reciprocating block drives the corresponding guide plate to move, thereby adjusting the falling and stacking position of the short steel pipes relative to the stacking rack, which is beneficial to improving the stacking effect of the short steel pipes on the stacking rack.

[0012] Optionally, the stacking rack includes a base plate placed horizontally on the ground, a plurality of universal wheels are arranged at the bottom of the base plate, two groups of stacking components are symmetrically arranged on the base plate about its vertical center line, the stacking components include a plurality of groups of unit stacking parts arranged at intervals in a direction away from the vertical center line of the base plate, and a plurality of short steel pipes are longitudinally stacked between two adjacent groups of unit stacking parts.

[0013] By adopting the above technical solution, multiple groups of unit stacking parts cooperate to achieve partitioned stacking of short steel pipes, which is beneficial to improving the neatness of short steel pipe stacking and enhancing the space utilization on the stacking rack.

[0014] Optionally, the unit stacking section includes two vertical support rods arranged along the length direction of the discharge roller, and a bottom sleeve arranged on the bottom plate and corresponding to each support rod. The bottom end of the support rod is plugged into and rotatably matched with the bottom sleeve, and the top end of each support rod is hinged with a support foot for supporting it on the ground.

[0015] By adopting the above technical solution, when the stacking rack is dragged to the warehouse, the worker manually pulls out the bottom sleeve from the bottom end of the support rod and turns it to a horizontal position, and turns the support legs to support it on the ground. After that, the worker can move the short steel pipes laid flat on the support rods down and stack them back in the warehouse, thereby facilitating the stacking and unloading of the short steel pipes at other locations.

[0016] Optionally, a limit stop bar is arranged on the support leg farthest from the vertical center line of the base plate, and when the support leg is supported on the ground, the corresponding limit stop plate is in a vertical state.

[0017] By adopting the above technical solution, the limiting lever can limit the short steel pipes laid flat on each support pole, thereby reducing the possibility of the short steel pipes rolling on the support poles and falling to the ground.

[0018] Optionally, a reinforcing rib mesh is arranged between two support rods in the same group.

[0019] By adopting the above technical solution, the reinforcing rib net enables the two support rods in the same group to maintain real-time synchronization during the process of rotating to the horizontal, thereby reducing the possibility that the two support rods rotate at different speeds, causing the steel pipe to tilt and accidentally slide to the ground.

[0020] Optionally, a reversing notch is provided on the support rod near the support foot, and a guide slot is provided on the side of the support rod facing the vertical center line of the base plate, the guide slot bypasses the reversing notch to the side of the support rod facing away from the vertical center line of the base plate, an elastic pull rope is tied between the two ends of the guide slot, and a plurality of lifting beads are arranged on the elastic pull rope at intervals along its length direction, and the spacing between two adjacent lifting beads gradually decreases in the direction from the support rod facing toward the side facing away from the vertical center line of the base plate, when the lifting bead is located on the side of the support rod facing toward the vertical center line of the base plate, the lifting bead extends out of the guide slot, and when the lifting bead is located on the side of the support rod facing away from the vertical center line of the base plate, the lifting bead is completely located in the guide slot.

[0021] By adopting the above technical solution, when the short steel pipe falls from between two adjacent groups of unit stacking parts, it will push the corresponding lifting bead to move downward, and the friction between the lifting bead and the guide slide groove will play a buffering role, and the elastic pull rope will be stretched, further slowing down the falling of the short steel pipe. During the falling and stacking process of each short steel pipe, a lifting bead will be pulled from the side of the support rod facing away from the vertical center line of the bottom plate to the side facing the vertical center line of the bottom plate, so that during the falling process of each short steel pipe, there is a corresponding lifting bead to achieve buffering and deceleration.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The long steel pipe rolls down from the preparation rack onto the feeding roller, and the feeding roller pushes the long steel pipe between the fixed seat and the sliding seat. Then, under the action of the driving member, the sliding seat presses the long steel pipe against the fixed seat. Then, the control system controls the piston rod of the hydraulic cylinder to extend, so that the pushing and cutting block pushes the long steel pipe, and the short steel pipe formed by pushing is transported to the stacking rack by the discharging roller. The pushing and cutting block in this application is made of a metal with high strength and hardness, and it will hardly deform or wear during the process of pushing and cutting the long steel pipe. Even if there is a small deformation, it can be repaired, so it does not need to be replaced regularly, saving costs; 2. The control system starts the first motor, and the output shaft of the first motor drives the first screw to rotate. Under the action of the first screw, the sliding block slides on the first carrier to a set position, thereby adjusting the estimated length of the long steel pipe through the interference between the long steel pipe and the sliding block; 3. The short steel pipes dropped from the tail end of the discharge roller roll onto the two guide plates, and then drop from the bottom of the two guide plates onto the stockpile rack. The control system starts the second motor, and the output shaft of the second motor drives the second screw to rotate. Under the action of the second screw, the reciprocating block drives the corresponding guide plate to move, thereby adjusting the drop and stacking position of the short steel pipes relative to the stockpile rack, which is beneficial to improving the stacking effect of the short steel pipes on the stockpile rack; 4. After the stacking rack is dragged to the warehouse, the worker manually pulls out the bottom sleeve from the bottom end of the support rod and rotates it to a horizontal position, and rotates the support legs to support it on the ground. After that, the worker can remove the short steel pipes laid flat on the support rods and stack them back in the warehouse, so as to facilitate the stacking and unloading of the short steel pipes at other locations; 5. When the short steel pipe falls from between two adjacent groups of unit stacking parts, it will push the corresponding lifting bead to move downward. The friction between the lifting bead and the guide chute plays a buffering role, and the elastic pull rope is stretched, further slowing down the falling of the short steel pipe. During the falling and stacking process of each short steel pipe, a lifting bead will be pulled from the side of the support rod facing away from the vertical center line of the bottom plate to the side facing the vertical center line of the bottom plate, so that during the falling process of each short steel pipe, there is a corresponding lifting bead to achieve buffering and deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the positional relationship between the second carrier frame, the guide plate and the second motor in an embodiment of the present application.

[0025] Figure 3 It is a cross-sectional view of the positional relationship between the support rods, support legs and base plate in the embodiment of the present application.

[0026] Figure 4It is a cross-sectional view of the stacking rack in the unloading state in the embodiment of the present application.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. material preparation rack; 2. material feeding roller; 31. bearing body; 32. fixed seat; 33. sliding seat; 34. pushing and cutting block; 35. hydraulic cylinder; 4. material discharging roller; 5. material stacking rack; 51. bottom plate; 52. universal wheel; 53. support rod; 531. reversing notch; 532. guide slide; 54. bottom sleeve; 55. support foot; 56. elastic pull rope; 57. lifting bead; 61. first bearing rack; 62. first motor; 63. first screw rod; 64. sliding block; 71. second bearing rack; 72. hanging rod; 73. guide plate; 74. second motor; 75. second screw rod; 76. reciprocating block; 8. limit lever; 9. mounting pull rope. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 This application is described in further detail.

[0029] The embodiment of the present application discloses a convenient steel pipe cutting device.

[0030] Reference Figure 1 The convenient steel pipe cutting device includes a preparation rack 1 for stacking long steel pipes, a feeding roller 2 for conveying the long steel pipes, a cutting assembly for cutting the long steel pipes into multiple short steel pipes, a discharging roller 4 for delivering the short steel pipes, and a stacking rack 5 for stacking the short steel pipes.

[0031] Reference Figure 1 and Figure 2 The segment cutting assembly includes a carrier body 31, a fixed seat 32 fixedly arranged on the carrier body 31, a sliding seat 33 slidably arranged on the carrier body, and a long steel pipe passes between the fixed seat 32 and the sliding seat 33.

[0032] The supporting body 31 is bolted with a driving member for pushing the sliding seat 33 to press the long steel pipe against the fixed seat 32. The driving member adopts an oil cylinder in the prior art. The fixed seat 32 and the sliding seat 33 cooperate to clamp and fix the long steel pipe.

[0033] Reference Figure 1 and Figure 2 A push-cut block 34 is slidably provided on the fixed seat 32, and the push-cut block 34 is made of a metal with relatively high strength and hardness in the prior art. A hydraulic cylinder 35 electrically connected to the control system is bolted to the supporting body 31, and a piston rod of the hydraulic cylinder 35 points to the long steel pipe and is threadedly connected to the push-cut block 34.

[0034] Reference Figure 1 and Figure 2The long steel pipe on the preparation rack 1 rolls down into the feeding roller 2, and the feeding roller 2 feeds the end of the long steel pipe between the fixed seat 32 and the sliding seat 33. Then the driving member drives the sliding seat 33 to press the long steel pipe against the fixed seat 32, and then the piston rod of the hydraulic cylinder 35 extends, so that the pushing block 34 pushes the long steel pipe, and the short steel pipe formed by pushing and cutting is transmitted by the discharging roller 4 to be stacked on the stacking rack 5.

[0035] Reference Figure 1 and Figure 2 A first carrier frame 61 is fixedly mounted on the discharge roller 4, and a first motor 62 electrically connected to the control system is bolted to the first carrier frame 61. The first motor 62 adopts a forward and reverse servo motor in the prior art.

[0036] A first screw rod 63 is coaxially arranged on the output shaft of the first motor 62 , and a sliding block 64 is threadedly connected to the first screw rod 63 . The sliding block 64 slides on the first supporting frame 61 and is used for abutting against the end of the long steel pipe.

[0037] Reference Figure 1 and Figure 2 The control system starts the first motor 62, and the output shaft of the first motor 62 drives the first screw rod 63 to rotate. The sliding block 64 slides along its length direction under the action of the thread on the first screw rod 63, so as to adjust the distance between the sliding block 64 and the supporting body 31.

[0038] When the feeding roller 2 pushes the long steel pipe, the end of the long steel pipe abuts against the sliding block 64, so that the length of the long steel pipe can be adjusted to be cut into multiple short steel pipes, thereby being suitable for the production of short steel pipes of different lengths.

[0039] Reference Figure 1 and Figure 2 A second carrier frame 71 is fixedly mounted at the tail end of the discharge roller 4 at a position directly above the stacking rack 5. Two hanging rods 72 parallel to the length direction of the discharge roller 4 are fixedly mounted on the second carrier frame 71. Each hanging rod 72 is fastened with a guide plate 73 through a plurality of mounting ropes 9, and the two guide plates 73 cooperate to form a V shape.

[0040] The second support frame 71 is also bolted with a second motor 74 electrically connected to the control system. The second motor 74 adopts a forward and reverse servo motor in the prior art. The output shaft of the second motor 74 is coaxially arranged with a second screw rod 75 perpendicular to the discharge roller 4. The second screw rod 75 is threadedly connected with two reciprocating blocks 76. One reciprocating block 76 corresponds to one guide plate 73 and is rotatably connected to it.

[0041] Reference Figure 1 and Figure 2 The short steel pipe falls from the tail end of the discharge roller 4 onto the guide plate 73 , and then falls from between the bottoms of the two guide plates 73 and accumulates on the stacking rack 5 .

[0042] The control system starts the second motor 74, and the output shaft of the second motor 74 drives the second screw rod 75 to rotate. The reciprocating block 76 moves under the action of the thread on the second screw rod 75, so that the inclination angle of the guide plate 73 changes accordingly, thereby adjusting the falling and stacking position of the short steel pipes relative to the stacking rack 5, thereby improving the stacking effect of the short steel pipes on the stacking rack 5.

[0043] Reference Figure 3 and Figure 4 The stacking rack 5 comprises a horizontal bottom plate 51, and four universal wheels 52 are arranged at the bottom of the bottom plate 51. Two groups of stacking components are arranged on the bottom plate 51, and the two groups of stacking components are symmetrically distributed about the vertical center line of the bottom plate 51.

[0044] The stacking assembly includes a plurality of unit stacking parts, which are arranged at equal intervals in a direction away from the vertical center line of the bottom plate 51, and a plurality of short steel pipes are stacked longitudinally between two adjacent unit stacking parts.

[0045] Reference Figure 3 and Figure 4 The unit stacking part includes two vertical support rods 53 arranged along the length direction of the discharge roller 4, and a bottom sleeve 54 bolted to the bottom plate 51 and corresponding to each support rod 53. The bottom end of the support rod 53 is plugged into the bottom sleeve 54 and rotatably matched. The top end of each support rod 53 is hinged with a support foot 55 for supporting it on the ground.

[0046] Reference Figure 3 and Figure 4 After the worker pushes and pulls the stacking rack 5 filled with short steel pipes to the warehouse, starting from the outermost unit stacking part, he manually pulls the bottom end of the support rod 53 out of the bottom sleeve 54, then rotates the support rod 53 to level it, and rotates the support foot 55 to support it on the ground.

[0047] When the support rod 53 is laid flat, the short steel pipes constrained by it will also move accordingly. When the support rod 53 is laid flat, the corresponding multiple short steel pipes will also be piled up flat on the corresponding support rod 53, so that multiple workers can stack and unload the short steel pipes together, thereby improving the stacking and unloading efficiency.

[0048] Reference Figure 3 and Figure 4 A reinforcing rib net (not shown in the figure) is welded between the two struts 53 in the same group. The reinforcing rib net is made of high-strength metal, so that the two struts 53 in the same group can rotate synchronously during the flattening process of the struts 53, thereby reducing the possibility that the two struts 53 rotate at different speeds, causing the short steel pipe to tilt and accidentally slip off the struts 53.

[0049] Reference Figure 3 and Figure 4A limit lever 8 is welded on the support leg 55 farthest from the vertical center line of the bottom plate 51. When the support leg 55 is supported on the ground, the corresponding limit lever 8 is in a vertical state. The limit lever 8 can limit the short steel pipes on each support rod 53, reducing the possibility of the short steel pipes rolling from the support leg 55 to the ground.

[0050] Reference Figure 3 and Figure 4 A reversing notch 531 is provided on the support rod 53 near the support foot 55, and a guide slot 532 is provided on the side of the support rod 53 facing the vertical center line of the bottom plate 51. The guide slot 532 bypasses the reversing notch 531 to the side of the support rod 53 facing away from the vertical center line of the bottom plate 51.

[0051] Reference Figure 3 and Figure 4 An elastic pull rope 56 is tied between the two ends of the guide slide groove 532, and a plurality of lifting beads 57 are arranged on the elastic pull rope 56 at intervals along its length direction. The distance between two adjacent lifting beads 57 gradually decreases along the direction of the support rod 53 toward the side of the vertical center line facing away from the bottom plate 51.

[0052] When the lifting ball 57 is located on the side of the support rod 53 facing the vertical center line of the bottom plate 51, the lifting ball 57 extends out of the guide slot 532; when the lifting ball 57 is located on the side of the support rod 53 facing away from the vertical center line of the bottom plate 51, the lifting ball 57 is completely located in the guide slot 532.

[0053] When the short steel pipe falls from between two adjacent groups of unit stacking parts, it will push the corresponding lifting ball 57 to move downward. The friction between the lifting ball 57 and the guide groove 532 plays a buffering role, and the elastic pull rope 56 is stretched, further slowing down the fall of the short steel pipe.

[0054] During the falling and stacking process of each short steel pipe, a lifting bead 57 is pulled from the side of the support rod 53 facing away from the vertical center line of the bottom plate 51 to the side facing the vertical center line of the bottom plate 51, so that during the falling process of each short steel pipe, there is a corresponding lifting bead 57 to buffer and slow it down.

[0055] The implementation principle of a portable steel pipe cutting device in the embodiment of the present application is: The long steel pipe on the preparation rack 1 rolls down into the feeding roller 2, and the feeding roller 2 feeds the end of the long steel pipe between the fixed seat 32 and the sliding seat 33. Then the driving member drives the sliding seat 33 to press the long steel pipe against the fixed seat 32, and then the piston rod of the hydraulic cylinder 35 extends, so that the pushing block 34 pushes the long steel pipe out.

[0056] The short steel pipe formed by push cutting falls onto the discharging roller 4 , and the short steel pipe falls onto the guide plate 73 from the tail end of the discharging roller 4 , and then falls from between the bottoms of the two guide plates 73 and is accumulated on the stacking rack 5 .

[0057] The control system starts the second motor 74, and the output shaft of the second motor 74 drives the second screw rod 75 to rotate. The reciprocating block 76 moves under the action of the thread on the second screw rod 75, so that the inclination angle of the guide plate 73 changes accordingly, thereby adjusting the falling and stacking position of the short steel pipe relative to the stacking rack 5.

[0058] When the short steel pipe falls from between two adjacent groups of unit stacking parts, it will push the corresponding lifting ball 57 to move downward. The friction between the lifting ball 57 and the guide groove 532 plays a buffering role, and the elastic pull rope 56 is stretched, further slowing down the fall of the short steel pipe.

[0059] When the stacking rack 5 is pushed and pulled into the warehouse, the bottom end of the support rod 53 is manually pulled upward out of the bottom sleeve 54, and then the support rod 53 is rotated to level it, and the support legs 55 are rotated to support it on the ground.

[0060] When the support rod 53 is laid flat, the short steel pipes constrained by it will also move accordingly. When the support rod 53 is laid flat, the corresponding multiple short steel pipes will also be piled up flat on the corresponding support rod 53, so as to facilitate the stacking and storage of the short steel pipes in other locations.

[0061] During the unloading process, the deformation force of the elastic pull rope 56 will push the multiple short steel pipes laid on the support rod 53 toward the workers, thereby facilitating the workers to quickly pick up the short steel pipes on the support rod 53 and improving the stacking and unloading efficiency.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A convenient steel pipe cutting device, comprising a preparation rack (1) for stacking long steel pipes, a feeding roller table (2) for conveying the long steel pipes, a cutting assembly for cutting the long steel pipes into a plurality of short steel pipes, a discharging roller table (4) for conveying the short steel pipes, and a stacking rack (5) for stacking the short steel pipes, characterized in that: The cutting assembly comprises a supporting body (31), a fixed seat (32) fixedly arranged on the supporting body (31), and a sliding seat (33) slidably arranged on the supporting body (31); the long steel pipe passes through between the fixed seat (32) and the sliding seat (33); a driving member for pushing the sliding seat (33) to press the long steel pipe against the fixed seat (32) is arranged on the supporting body (31); a pushing and cutting block (34) is slidably penetrated on the fixed seat (32); a hydraulic cylinder (35) electrically connected to a control system is arranged on the supporting body (31); a piston rod of the hydraulic cylinder (35) points to the long steel pipe and is connected to the pushing and cutting block (34).

2. The portable steel pipe cutting device according to claim 1 is characterized in that: A first carrier frame (61) is mounted above the discharging roller (4); a first motor (62) electrically connected to a control system and a first screw rod (63) coaxially connected to an output shaft of the first motor (62) are arranged on the first carrier frame (61); a sliding block (64) is threadedly connected to the first screw rod (63); the sliding block (64) slides on the first carrier frame (61) and is used for abutting against the end of the long steel pipe.

3. The portable steel pipe cutting device according to claim 1 is characterized in that: A second carrier frame (71) is mounted at the tail end of the discharging roller (4) at a position directly above the stacking frame (5); two mutually parallel hanging rods (72) are arranged on the second carrier frame (71); each hanging rod (72) is fastened with a guide plate (73) via a mounting pull rope (9); the two guide plates (73) cooperate to form a V shape; a second motor (74) electrically connected to the control system is also arranged on the second carrier frame (71); the output shaft of the second motor (74) is coaxially connected to a second screw rod (75); two reciprocating blocks (76) are threadedly connected to the second screw rod (75); one reciprocating block (76) corresponds to one guide plate (73) and is rotatably connected to the guide plate (73).

4. The portable steel pipe cutting device according to claim 1 is characterized in that: The stacking rack (5) comprises a base plate (51) placed horizontally on the ground, a plurality of universal wheels (52) are arranged at the bottom of the base plate (51), two groups of stacking components are symmetrically arranged on the base plate (51) about its vertical center line, and the stacking components include a plurality of groups of unit stacking parts arranged at intervals in a direction away from the vertical center line of the base plate (51), and a plurality of short steel pipes are longitudinally stacked between two adjacent groups of unit stacking parts.

5. The portable steel pipe cutting device according to claim 4 is characterized in that: The unit stacking section comprises two vertical support rods (53) arranged along the length direction of the discharge roller (4), and a bottom sleeve (54) arranged on the bottom plate (51) and corresponding to each support rod (53). The bottom end of the support rod (53) is plugged into and rotatably matched with the bottom sleeve (54), and the top end of each support rod (53) is hinged with a support foot (55) for supporting on the ground.

6. The portable steel pipe cutting device according to claim 5, characterized in that: A limit stop bar (8) is arranged on the support leg (55) farthest from the vertical center line of the bottom plate (51); when the support leg (55) is supported on the ground, the corresponding limit stop plate is in a vertical state.

7. The portable steel pipe cutting device according to claim 5, characterized in that: A reinforcing rib net is arranged between two support rods (53) in the same group.

8. The portable steel pipe cutting device according to claim 5, characterized in that: A reversing notch (531) is provided on the support rod (53) near the support foot (55), and a guide slot (532) is provided on the side of the support rod (53) facing the vertical center line of the bottom plate (51). The guide slot (532) bypasses the reversing notch (531) to the side of the support rod (53) facing away from the vertical center line of the bottom plate (51), and an elastic drawstring (56) is tied between the two ends of the guide slot (532). A plurality of lifting beads (536) are arranged at intervals on the elastic drawstring (56) along its length direction. 57), the spacing between two adjacent lifting beads (57) gradually decreases along the direction from the support rod (53) toward the side of the vertical center line of the bottom plate (51); when the lifting beads (57) are located on the side of the support rod (53) toward the vertical center line of the bottom plate (51), the lifting beads (57) extend out of the guide slot (532); when the lifting beads (57) are located on the side of the support rod (53) away from the vertical center line of the bottom plate (51), the lifting beads (57) are completely located in the guide slot (532).

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