Steel pipe end inner hole correcting device
By combining the use of hydraulic presses and gas spray guns in the inner hole correction device of the steel pipe end, the end of the steel pipe is heated and then flushed, solving the problems of easy breakage and unstable clamping of the steel pipe ends in the prior art, and achieving stability and Efficient correction effect.
Patent Information
- Application Number
- CN202421115233.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The ends of existing steel pipes are prone to breaking or deforming during the punching process. Inadequate clamping force leads to slippage, and excessive clamping can also lead to deformation.
A steel pipe end inner hole correction device is designed, including a hydraulic press and a gas spray gun. The end of the heated steel pipe is corrected through the hydraulic cylinder and a conical punching head. The sliding frame and positioning rod are used to ensure stable clamping to avoid cold. Break caused by rushing.
It effectively avoids breaking and deformation of the steel pipe during the punching process, improves clamping stability, and ensures correct correction of the ends of the steel pipe.
Smart Images
Figure CN222268291U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel pipe repair, in particular to a steel pipe end inner hole correction device. Background Art
[0002] The material of the steel pipe is made of metal steel. The body has high strength and certain ductility. During use, there is a problem of deformation caused by collision or extrusion. The most prominent problem is that the two ends of the steel pipe connection often appear concave inward, making it impossible to use it for later assembly. At this time, the inner hole needs to be punched.
[0003] The current mainstream method is to use heavy hydraulic equipment for stamping, but there are certain problems in the actual operation process; during the cold straightening process at room temperature, if there are bends or damages on the surface of the steel pipe, the straightening will cause the damaged part to break easily. At the same time, if the steel pipe is clamped and straightened during the straightening process, the clamping force is not enough and it is easy to slip. If the clamping is too tight, the steel pipe is easy to deform. In order to solve the above problems, a steel pipe end inner hole correction device is specially provided to solve the above problems. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a device for correcting the inner hole of a steel pipe end, which solves the problem that when one end of the steel pipe is supported and the other end is straightened, if there is a certain bend in the steel pipe body, the steel pipe is very likely to break; when the steel pipe is clamped and straightened, the clamping force is insufficient and slipping is likely to occur; when the clamping is too tight, the steel pipe is likely to be deformed.
[0006] (II) Technical solution
[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a steel pipe end inner hole correction device, including an operating table and a steel pipe placement rack arranged on the top of the operating table, a hydraulic press for punching the inner diameter of the steel pipe is arranged at the front end of the steel pipe placement rack, the hydraulic press includes a hydraulic cylinder that can move laterally and a conical punching head installed at the output end of the hydraulic cylinder, and a gas spray gun for softening the steel pipe is arranged on the top of the operating table.
[0008] Preferably, a slide groove is provided on the top of the operating table, and sliding frames are fixedly mounted on the outer surfaces of both ends of the hydraulic cylinder, and the bottom end of the sliding frame is slidably connected to the inside of the slide groove.
[0009] Preferably, a connecting seat is fixedly mounted on the output end of the hydraulic cylinder, and the conical punching head is mounted inside the connecting seat by bolts.
[0010] Preferably, a positioning rod is fixedly connected to the back side of the connecting seat, and the positioning rod passes through the sliding frame.
[0011] Preferably, a positioning groove is provided in the middle of the slide groove, and a latch is slidably connected to the side of the slide frame, and the latch is movably inserted into the interior of the positioning groove.
[0012] Preferably, a fixed cantilever and a movable sliding beam are installed on the top of the operating table, a hanging ring is rotatably connected to the lower surface of the cantilever, and the gas spray gun is installed inside the sliding beam.
[0013] Preferably, the steel pipe placement rack includes a fixing seat, four groups of connecting rods are fixed inside the fixing seat by nuts, and the ends of the connecting rods are fixedly connected to positioning seats.
[0014] Preferably, an arc-shaped pad is provided at the inner bottom of the fixing seat, and a conical positioning hole is opened inside the positioning seat.
[0015] The utility model discloses a device for correcting the inner hole of a steel pipe end, which has the following beneficial effects: one end of the steel pipe is passed through a lifting ring and a fixing seat in sequence and inserted into the interior of a positioning seat, and then a sliding beam is slid on the top of an operating table so that the bottom end of a gas spray gun faces the outer surface of the end of the steel pipe, and then the gas spray gun is started to calcine the end of the steel pipe to reduce the hardness of the end, and then the sliding frame is pushed toward the middle and the hydraulic cylinder is started, at which time a conical punching head punches the end of the heated steel pipe to avoid the steel pipe being broken due to cold punching. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the overall back structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the hydraulic press of the utility model;
[0020] Figure 4 It is a schematic diagram of the outer surface structure of the steel pipe placement rack of the utility model.
[0021] In the figure: 1. operating table; 2. hydraulic press; 21. sliding frame; 22. hydraulic cylinder; 23. connecting seat; 24. positioning rod; 25. conical punch head; 26. latch; 3. steel pipe placement rack; 31. fixed seat; 32. positioning seat; 33. connecting rod; 34. arc pad; 4. cantilever; 5. gas spray gun; 6. lifting ring; 7. slideway; 8. sliding beam. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The embodiment of the present application provides a device for correcting the inner hole of a steel pipe end, thereby solving the problem that when one end of the steel pipe is supported and the other end is straightened, if there is a certain bend in the steel pipe body, the steel pipe is very likely to break; when the steel pipe is clamped and straightened, the clamping force is insufficient and slipping is likely to occur; when the clamping is too tight, the steel pipe is likely to be deformed.
[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0025] The utility model embodiment discloses a device for correcting the inner hole of a steel pipe end.
[0026] According to the attached Figure 1-4 As shown, it includes an operating table 1 and a steel pipe placement rack 3 arranged on the top of the operating table 1. The front end of the steel pipe placement rack 3 is provided with a hydraulic press 2 for punching the inner diameter of the steel pipe. The hydraulic press 2 includes a hydraulic cylinder 22 that can move laterally and a conical punching head 25 installed on the output end of the hydraulic cylinder 22. The top of the operating table 1 is provided with a gas spray gun 5 for softening the steel pipe.
[0027] A fixed cantilever 4 and a movable sliding beam 8 are installed on the top of the operating table 1. The lower surface of the cantilever 4 is rotatably connected with a hanging ring 6. The gas spray gun 5 is installed inside the sliding beam 8. The position of the gas spray gun 5 is adjusted according to the length of the steel pipe. The sliding beam 8 is slid on the top of the operating table 1 so that the bottom end of the gas spray gun 5 is facing the outer surface of the end of the steel pipe. Then the gas spray gun 5 is started to calcine the end of the steel pipe. At the same time, the steel pipe is rotated so that the surface of its end is evenly heated, especially the position where deformation occurs is calcined for a period of time to reduce the hardness of its end.
[0028] The steel pipe placement rack 3 includes a fixed seat 31, four groups of connecting rods 33 are fixed inside the fixed seat 31 by nuts, the ends of the connecting rods 33 are fixedly connected to the positioning seat 32, an arc-shaped pad 34 is provided at the inner bottom of the fixed seat 31, and a conical positioning hole is opened inside the positioning seat 32, and the conical positioning hole coincides with the axis of the conical punching head 25. By passing one end of the steel pipe through the lifting ring 6 and the fixed seat 31 in sequence, and inserting it into the positioning seat 32 for placement, the steel pipe is placed in a roughly horizontal state.
[0029] A slide groove 7 is provided on the top of the operating table 1, and a sliding frame 21 is fixedly installed on the outer surfaces of both ends of the hydraulic cylinder 22. The bottom end of the sliding frame 21 is slidably connected to the inside of the slide groove 7. A connecting seat 23 is fixedly installed on the output end of the hydraulic cylinder 22. A conical punch head 25 is installed inside the connecting seat 23 by bolts. A positioning rod 24 is fixedly connected to the back of the connecting seat 23. The positioning rod 24 passes through the sliding frame 21. A positioning groove is provided in the middle of the slide groove 7. A latch 26 is slidably connected to the side of the sliding frame 21. The latch 26 is fixedly connected to the side of the sliding frame 21. 6 is movably inserted in the positioning groove, and the sliding frame 21 is pushed toward the middle so that the pin 26 faces the positioning groove. At this time, the pin 26 is automatically inserted into the positioning groove under the action of gravity, and then the hydraulic cylinder 22 is started so that its output end drives the conical punching head 25 to be inserted into the inside of the steel pipe. At the same time, the end of the steel pipe moves in the conical positioning hole, so that the steel pipe is automatically in a horizontal state. At this time, the conical punching head 25 punches the end of the heated steel pipe to avoid the steel pipe from being broken due to cold punching.
[0030] In summary, compared with the prior art, the present invention has the following beneficial effects:
[0031] One end of the steel pipe is passed through the lifting ring 6 and the fixing seat 31 in sequence, and inserted into the positioning seat 32, and then the sliding beam 8 is slid on the top of the operating table 1, so that the bottom end of the gas spray gun 5 is facing the outer surface of the end of the steel pipe, and then the gas spray gun 5 is started to calcine the end of the steel pipe to reduce the hardness of the end, and then the sliding frame 21 is pushed toward the middle, and the hydraulic cylinder 22 is started. At this time, the conical punching head 25 punches the heated steel pipe end to avoid cold punching and causing the steel pipe to break.
[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A device for correcting the inner hole of a steel pipe end, comprising an operating table (1) and a steel pipe placement rack (3) arranged on the top of the operating table (1), wherein a hydraulic press (2) for correcting the inner diameter of the steel pipe is arranged at the front end of the steel pipe placement rack (3), characterized in that: The hydraulic press (2) comprises a hydraulic cylinder (22) which can move laterally and a conical punching head (25) installed at the output end of the hydraulic cylinder (22). A gas spray gun (5) for softening the steel pipe is arranged on the top of the operating platform (1).
2. A steel pipe end inner hole correction device according to claim 1, characterized in that: A slide groove (7) is provided on the top of the operating table (1), and sliding frames (21) are fixedly mounted on the outer surfaces of both ends of the hydraulic cylinder (22), and the bottom end of the sliding frame (21) is slidably connected to the inside of the slide groove (7).
3. A steel pipe end inner hole correction device according to claim 2, characterized in that: A connecting seat (23) is fixedly mounted on the output end of the hydraulic cylinder (22), and the conical punch head (25) is mounted inside the connecting seat (23) by means of bolts.
4. A steel pipe end inner hole correction device according to claim 3, characterized in that: A positioning rod (24) is fixedly connected to the back of the connecting seat (23), and the positioning rod (24) passes through the sliding frame (21).
5. A steel pipe end inner hole correction device according to claim 2, characterized in that: A positioning groove is provided in the middle of the slide groove (7), and a latch (26) is slidably connected to the side of the slide frame (21), and the latch (26) is movably inserted into the interior of the positioning groove.
6. A steel pipe end inner hole correction device according to claim 1, characterized in that: A fixed cantilever (4) and a movable sliding beam (8) are installed on the top of the operating table (1); a hanging ring (6) is rotatably connected to the lower surface of the cantilever (4); and the gas spray gun (5) is installed inside the sliding beam (8).
7. A steel pipe end inner hole correction device according to claim 1, characterized in that: The steel pipe placement rack (3) comprises a fixing seat (31), four groups of connecting rods (33) are fixed inside the fixing seat (31) via nuts, and the ends of the connecting rods (33) are fixedly connected to positioning seats (32).
8. A steel pipe end inner hole correction device according to claim 7, characterized in that: An arc-shaped pad (34) is provided at the inner bottom of the fixing seat (31), and a conical positioning hole is provided inside the positioning seat (32).