Steel pipe cutting device

Abstract

The utility model relates to the technical field of cutting, in particular to a steel pipe cutting device which comprises a back plate, two groups of shoulder straps are fixedly connected to the outer wall of the back plate, an exoskeleton arm is rotatably mounted on the outer wall of the back plate, two groups of mounting plates are fixedly mounted on the outer wall of the exoskeleton arm, and a connecting belt is fixedly connected to the outer wall of each group of mounting plates. The connecting belt and the mounting plate are fixedly connected through a fixing mechanism, an electric drill is further rotationally mounted on the outer wall of the exoskeleton arm, a saw disc capable of cutting the steel pipe is arranged on the side, away from the exoskeleton arm, of the electric drill, a dismounting mechanism is fixedly mounted between the electric drill and the saw disc, and more labor can be saved for workers through the exoskeleton arm.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, specifically a steel pipe cutting device. Background Technology

[0002] Steel pipes are not only used for transporting fluids and powdery solids, but also for exchanging heat energy, manufacturing mechanical parts and containers. They are an economical steel material and have a wide range of applications in the automotive industry. They are commonly used as automotive drive shaft tubes, automotive muffler tubes, condenser tubes, automotive exhaust pipes, control shaft tubes, automotive thrust tubes, and automotive shock absorber oil storage, etc. In the production of automotive steel pipes, most of the cutting is done by machines, but some steel pipes still need to be cut manually by workers. During the manual cutting process, workers' arms are kept in one position for a long time, which is very tiring.

[0003] Chinese patent (authorization announcement number: CN110039108A) discloses a steel pipe fixing device for steel pipe cutting equipment, including a fixing platform, the upper end of which is a table surface, and slide rails on the front and rear sides of the platform. A slide table is slidably installed on the slide rails, and a push block is connected to the outer side of the slide table. The push block is installed and fixed on the fixing platform through an adjustment component. The steel pipe fixing device for steel pipe cutting equipment has a reasonable structural design and strong practicality. Compared with the traditional single-ring fixing device for steel pipes, the steel pipe fixing device for steel pipe cutting equipment has two circular rings clamping it at the front and rear, which ensures that the steel pipe does not shift position during the cutting process and thus does not cause damage to the cut steel pipe. It is worth promoting and using in the field of steel pipe processing equipment.

[0004] The above solution only positions and fixes the steel pipe. During use, the manual cutting of the steel pipe by the workers makes it tiring to maintain one posture. In order to solve the problem of the workers being tired from maintaining one posture when manually cutting the steel pipe, we propose a steel pipe cutting device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a steel pipe cutting device, which solves the problems mentioned below.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A steel pipe cutting device includes a back plate, two sets of shoulder straps fixedly connected to the outer wall of the back plate, an exoskeleton arm rotatably mounted on the outer wall of the back plate, two sets of mounting plates fixedly mounted on the outer wall of the exoskeleton arm, and a connecting strap fixedly connected to the outer wall of each mounting plate. The connecting strap and the mounting plate are fixedly connected by a fixing mechanism. An electric drill is also rotatably mounted on the outer wall of the exoskeleton arm, and a saw disc for cutting steel pipes is provided on the side of the electric drill away from the exoskeleton arm. A disassembly mechanism is fixedly installed between the electric drill and the saw disc.

[0008] As a further aspect of this solution, the fixing mechanism includes a rectangular plate, which is fixedly installed on the outer wall of the mounting plate. A fixing frame is fixedly connected to the upper end of the rectangular plate. Two sets of abutment blocks are slidably installed on the inner wall of the fixing frame. Each set of abutment blocks has an inclined groove inside. An elastic telescopic arm with a reset function is fixedly connected to the inner wall of the fixing frame. The elastic telescopic arm has good reset performance.

[0009] As a further aspect of this solution, a movable block is fixedly connected to the end of the elastic telescopic arm away from the fixed frame, and the bottom of the movable block is slidably installed with the outer wall of the rectangular plate. The bottom of each set of abutting blocks abuts with the upper end of the movable block. Four sets of limiting posts are fixedly connected to the upper end of the movable block, and every two sets of limiting posts are slidably installed in the inner wall of the corresponding inclined groove. The limiting posts will slide well in the inner wall of the inclined groove.

[0010] As a further aspect of this solution, a rotating block is rotatably mounted on the upper end of the rectangular plate, the outer wall of the rotating block abuts against the moving block, a snap-fit ​​bracket is snapped between the fixed bracket and the abutting block, and the outer wall of the snap-fit ​​bracket is fixedly connected to the connecting belt.

[0011] As a further aspect of this solution, the disassembly mechanism includes a fixed circular block, which is fixedly installed on the output end of the electric drill. A threaded rod is fixedly connected to the end of the fixed circular block away from the electric drill, and a fixed rod is fixedly connected to the end of the threaded rod away from the fixed circular block.

[0012] As a further aspect of this solution, a second spring is fixedly connected to one end of the fixed circular block near the fixed rod, and a snap-fit ​​disc is fixedly connected to the other end of the second spring away from the fixed circular block. Both the snap-fit ​​disc and the second spring are sleeved on the outer wall of the threaded rod. A movable rectangular block is also slidably installed on the outer wall of the fixed rod, and the fixed circular block can be quickly reset by the second spring.

[0013] As a further aspect of this solution, eight sets of second rotating arms are rotatably mounted on the outer wall of the fixed rod, and four sets of first rotating arms are rotatably mounted on the outer wall of the movable rectangular block. A second abutting plate is rotatably mounted between every two sets of second rotating arms and one set of first rotating arms. A rotating round block is rotatably mounted on one end of the movable rectangular block near the fixed round block, and the inner wall of the rotating round block is threadedly connected to the outer wall of the threaded rod. A toothed disc is fixedly mounted on the opposite end of the rotating round block and the locking disc, and the two sets of toothed discs abut against each other, and the toothed discs can lock and limit each other.

[0014] Beneficial effects

[0015] This utility model provides a steel pipe cutting device. Compared with the prior art, it has the following advantages:

[0016] 1. This steel pipe cutting device only requires rotating the rotating block. When the rotating block rotates, it will slowly disengage from the moving block. The moving block will move in the direction of the rotating block. The moving block will drive all the limiting posts to move in the inner wall of the inclined groove. At this time, the abutment block will slowly disengage from the snap-fit ​​frame. The snap-fit ​​frame can then be removed, and the arm can be put into the inside of each set of mounting plates. At this time, it is only necessary to insert the snap-fit ​​frame between each set of abutment blocks and the fixed frame. The exoskeleton arm allows the worker's arm to remain in a relaxed state and can be quickly put on.

[0017] 2. This steel pipe cutting device involves pulling the locking disc, causing the toothed disc between the locking disc and the rotating block to disengage. The rotating block moves towards the fixed block, which in turn moves the moving rectangular block, which in turn rotates the first rotating arm. At this time, all the second abutment plates and the first abutment plates slowly retract towards the fixed rod. When the first abutment plates disengage from the inner wall of the saw disc, a new saw disc is then fitted onto the outer wall of all the first abutment plates, allowing for quick replacement of the locking disc. Attached Figure Description

[0018] Figure 1 This is a front view of the main body of this utility model;

[0019] Figure 2 This is a schematic diagram of the connecting strip position structure of the main body of this utility model;

[0020] Figure 3 This is a schematic diagram of the saw blade position structure of the main body of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing mechanism structure of the main body of this utility model;

[0022] Figure 5 This is a top view of the fixing mechanism of the main body of this utility model;

[0023] Figure 6 This is a schematic diagram of the disassembly mechanism of the main body of this utility model.

[0024] In the diagram: 1. Backplate; 2. Shoulder strap; 3. Exoskeleton arm; 4. Mounting plate; 5. Connecting strap; 6. Saw disc; 7. Electric drill; 8. First rotating arm; 9. Rotating block; 10. Rectangular plate; 11. Rack; 12. Elastic telescopic arm; 13. Inclined groove; 14. Fixing frame; 15. Abutment block; 16. Limiting post; 17. Moving block; 18. Handle; 19. Clip-on frame; 20. Fixed round block; 21. Telescopic rod; 22. Threaded rod; 23. Rotating round block; 24. Moving rectangular block; 25. Fixing rod; 26. Second rotating arm; 27. First abutment plate; 28. Second abutment plate; 29. ​​Clip-on disc; 101. Fixing mechanism; 201. Disassembly mechanism. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 , 2 As shown in Figure 3, this utility model provides a steel pipe cutting device, including a back plate 1. The back plate 1 has several weight-reducing holes on its outer side, and these holes are arranged in an array on the outer wall of the back plate 1. The weight-reducing holes can greatly reduce the overall weight of the back plate 1 and make it easier for workers to wear, relieving the weight burden when wearing it. Two sets of shoulder straps 2 are fixedly connected to the outer wall of the back plate 1. The shoulder straps 2 are made of nylon material, and nylon fabric usually has a good feel and moderate weight, making the carrying feel comfortable. An exoskeleton arm 3 is rotatably installed on the outer wall of the back plate 1. Two sets of mounting plates 4 are fixedly installed on the outer wall of the exoskeleton arm 3, and a connecting strap 5 is fixedly connected to the outer wall of each set of mounting plates 4. The connecting strap 5 is fixedly connected to the mounting plate 4 through a fixing mechanism 101. An electric drill 7 is also rotatably installed on the outer wall of the exoskeleton arm 3, and a saw disc 6 for cutting steel pipes is provided on the side of the electric drill 7 away from the exoskeleton arm 3. A disassembly mechanism 201 is fixedly installed between the electric drill 7 and the saw disc 6.

[0027] Example 2: Please refer to Figure 2 , 4As shown in Figure 5, the fixing mechanism 101 includes a rectangular plate 10, which is fixedly installed on the outer wall of the mounting plate 4. A fixing frame 14 is fixedly connected to the upper end of the rectangular plate 10. Two sets of abutment blocks 15 are slidably installed on the inner wall of the fixing frame 14. Each set of abutment blocks 15 has an inclined groove 13 inside, and each set of inclined grooves 13 is inclined at an angle inside the corresponding abutment block 15. The two sets of abutment blocks 15 and the two sets of inclined grooves 13 are symmetrically distributed. Specifically, two sets of sliding grooves are opened at the upper end of the fixing frame 14, and a sliding strip is fixedly connected to the bottom of each set of abutment blocks 15. Each set of sliding strips is slidably installed in the inner wall of the sliding groove. More specifically, the outer wall of the sliding strip and the inner wall of the sliding groove are coated with lubricating oil. When the abutment blocks 15 move, each set of abutment blocks 15 drives the corresponding sliding strip in the inner wall of the sliding groove. In the middle movement, the slide rail can limit the abutment block 15 through the slide bar and also has a guiding function, which improves the stability of the abutment block 15 when moving. The lubricating oil can also reduce the friction between the slide bar and the slide rail and reduce the service life of the slide bar and the slide rail. The inner wall of the fixed frame 14 is fixedly connected to the elastic telescopic arm 12 with the reset function, and the elastic telescopic arm 12 is fixedly installed with the first spring inside. The end of the elastic telescopic arm 12 away from the fixed frame 14 is fixedly connected to the moving block 17, and the bottom of the moving block 17 is slidably installed with the outer wall of the rectangular plate 10. The bottom of each set of abutment blocks 15 abuts with the upper end of the moving block 17. The upper end of the moving block 17 is fixedly connected to four sets of limiting posts 16, and every two sets of limiting posts 16 are slidably installed in the inner wall of the corresponding inclined groove 13.

[0028] Please see Figure 4 , 5 As shown, a rotating block 9 is rotatably mounted on the upper end of the rectangular plate 10. The rotating block 9 is an irregular circle. The outer wall of the rotating block 9 abuts against the moving block 17. A handle 18 is fixedly connected to the upper end of the rotating block 9. The handle 18 allows the operator to easily rotate the rotating block 9. A snap-fit ​​bracket 19 is snapped between the fixed frame 14 and the abutting block 15. A rack 11 is fixedly connected to the end of the snap-fit ​​bracket 19 opposite to each set of abutting blocks 15. Each set of racks 11 snaps against each other. The snap-fit ​​bracket 19 can enhance the friction between itself and each set of abutting blocks 15 through the racks 11, making the snap-fit ​​bracket 19 more stable when fixed by the abutting blocks 15. The outer wall of the snap-fit ​​bracket 19 is fixedly connected to the connecting belt 5.

[0029] Please see Figure 3 , 6As shown, the disassembly mechanism 201 includes a fixed circular block 20, which is fixedly installed on the output end of the electric drill 7. A threaded rod 22 is fixedly connected to the end of the fixed circular block 20 away from the electric drill 7, and a fixed rod 25 is fixedly connected to the end of the threaded rod 22 away from the fixed circular block 20. A second spring is fixedly connected to the end of the fixed circular block 20 near the fixed rod 25, and a locking disc 29 is fixedly connected to the end of the second spring away from the fixed circular block 20. Both the locking disc 29 and the second spring are sleeved on the outer wall of the threaded rod 22. Several telescopic rods 21 are also fixedly connected between the locking disc 29 and the fixed circular block 20, and the telescopic rods 21 can limit the locking disc 29 to prevent it from rotating. A movable rectangular block 24 is slidably installed on the outer wall of the fixed rod 25. Eight sets of second rotating arms 26 are rotatably installed on the outer wall of the fixed rod 25, and four sets of first rotating arms 8 are rotatably installed on the outer wall of the movable rectangular block 24. The several second rotating arms 26 and the several first rotating arms 8 are connected... A rotating arm 8 is circumferentially distributed on the outer wall of the fixed rod 25 and the movable rectangular block 24. A second abutment plate 28 is rotatably installed between every two sets of second rotating arms 26 and one set of first rotating arms 8. A first abutment plate 27 is provided on the side of the second abutment plate 28 away from the second rotating arm 26. Several third springs are fixedly connected between the first abutment plate 27 and the second abutment plate 28. Both the first abutment plate 27 and the second abutment plate 28 are curved. The first abutment plate 27... The outer wall can better fit and abut against the inner wall of the saw disc 6, and a rubber pad is fixedly installed on the outer wall of the first abutting plate 27. The rubber pad can enhance the friction between the first abutting plate 27 and the inner wall of the saw disc 6. A rotating round block 23 is rotatably installed on one end of the movable rectangular block 24 near the fixed round block 20, and the inner wall of the rotating round block 23 is threadedly connected to the outer wall of the threaded rod 22. A toothed disc is fixedly installed on the opposite end of the rotating round block 23 and the snap-fit ​​disc 29, and the two sets of toothed discs abut against each other.

[0030] Working principle: When in use, simply wear the shoulder strap 2 on the worker's shoulder. Then, rotate the rotating block 9. As the rotating block 9 rotates, it will slowly disengage from the moving block 17. However, because the elastic telescopic arm 12 will cause the moving block 17 to reset, the moving block 17 will move towards the rotating block 9. During the movement of the moving block 17, all the limiting posts 16 will move in the inner wall of the corresponding inclined groove 13. At this time, the abutment block 15 will slowly disengage from the snap-fit ​​bracket 19. The snap-fit ​​bracket 19 can then be removed. Simply put the arm inside each set of mounting plates 4. Then, insert the snap-fit ​​bracket 19 between each set of abutment blocks 15 and the fixing frame 14. According to the above working principle, rotating the rotating block 9 in the opposite direction will cause the rotating block 9 to reset. The moving block 17 will then drive the abutment block 15 to snap-fit ​​with the snap-fit ​​bracket 19 through the limiting posts 16, thus completing the fixation of the snap-fit ​​bracket 19.

[0031] When the saw disc 6 is damaged, simply pull the locking disc 29 to disengage the toothed disc between the locking disc 29 and the rotating block 23. Rotate the rotating block 23 towards the fixed block 20. The rotating block 23 will drive the moving rectangular block 24 to move, and the moving rectangular block 24 will drive the first rotating arm 8 to rotate. At this time, all the second abutment plates 28 and the first abutment plates 27 will slowly move towards the fixed rod 25 and retract. When the first abutment plates 27 disengage from the inner wall of the saw disc 6, a new saw disc 6 is then fitted onto the outer wall of all the first abutment plates 27. According to the above working principle, rotating the rotating block 23 in the opposite direction will cause all the first rotating arms 8 to drive the first abutment plates 27 to abut against the inner wall of the saw disc 6, thus completing the fixation of the inside of the saw disc 6 and releasing the control of the locking disc 29. The two sets of toothed discs can be interlocked, which can limit the movement of the rotating block 23 and the moving rectangular block 24.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe cutting apparatus comprising a back plate (1), characterized in that: The outer wall of the back plate (1) is fixedly connected with two groups of shoulder straps (2), the outer wall of the back plate (1) is rotatably installed with an exoskeleton arm (3), the outer wall of the exoskeleton arm (3) is fixedly installed with two groups of mounting plates (4), and the outer wall of each group of mounting plates (4) is fixedly connected with a connecting belt (5), the connecting belt (5) and the mounting plate (4) are fixedly connected through a fixing mechanism (101), and the outer wall of the exoskeleton arm (3) is also rotatably installed with an electric drill (7), and the side, away from the exoskeleton arm (3), of the electric drill (7) is provided with a saw disc (6) capable of cutting steel pipes, and the electric drill (7) and the saw disc (6) are fixedly installed with a dismounting mechanism (201).

2. A steel pipe cutting apparatus according to claim 1, wherein: The fixing mechanism (101) comprises a rectangular plate (10) fixedly installed on the outer wall of the mounting plate (4), a fixed frame (14) fixedly connected to the upper end of the rectangular plate (10), two groups of abutting blocks (15) slidably installed in the inner wall of the fixed frame (14), and a resilient telescopic arm (12) with a reset function fixedly connected to the inner wall of the fixed frame (14).

3. A steel pipe cutting apparatus according to claim 2, wherein: The end, away from the fixed frame (14), of the resilient telescopic arm (12) is fixedly connected with a moving block (17), and the bottom of the moving block (17) is slidably installed with the outer wall of the rectangular plate (10), the bottom of each group of abutting blocks (15) is abutted with the upper end of the moving block (17), the upper end of the moving block (17) is fixedly connected with four groups of limiting columns (16), and every two groups of limiting columns (16) are slidably installed in the inner wall of the corresponding inclined groove (13).

4. A steel pipe cutting apparatus according to claim 3, wherein: The upper end of the rectangular plate (10) is rotatably installed with a rotating block (9), the outer wall of the rotating block (9) is abutted with the moving block (17), the fixed frame (14) and the abutting block (15) are clamped with a clamping frame (19), and the outer wall of the clamping frame (19) is fixedly connected with the connecting belt (5).

5. A pipe cutting apparatus as defined in claim 1, wherein: The dismounting mechanism (201) comprises a fixed circular block (20) fixedly installed on the output end of the electric drill (7), a threaded rod (22) fixedly connected to the end, away from the electric drill (7), of the fixed circular block (20), and a fixed rod (25) fixedly connected to the end, away from the fixed circular block (20), of the threaded rod (22).

6. A steel pipe cutting apparatus according to claim 5, wherein: The end, close to the fixed rod (25), of the fixed circular block (20) is fixedly connected with a second spring, the end, away from the fixed circular block (20), of the second spring is fixedly connected with a clamping disc (29), the clamping disc (29) and the second spring are sleeved on the outer wall of the threaded rod (22), and the outer wall of the fixed rod (25) is also slidably installed with a moving rectangular block (24).

7. A steel pipe cutting apparatus according to claim 6, wherein: The outer wall of the fixed rod (25) is rotationally installed with eight groups of second rotation arms (26), the outer wall of the moving rectangular block (24) is rotationally installed with four groups of first rotation arms (8), and between every two groups of second rotation arms (26) and a group of first rotation arms (8), a second abutting plate (28) is further rotationally installed, one end of the moving rectangular block (24) close to the fixed circular block (20) is rotationally installed with a rotating circular block (23), the inner wall of the rotating circular block (23) is threadedly connected to the outer wall of a threaded rod (22), the opposite end of the rotating circular block (23) and the clamping disc (29) are both fixedly installed with a gear disc, and the two gear discs abut against each other.

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