Welded pipe quick-change flaring and flattening testing machine

Abstract

The utility model discloses a welded pipe quick-change flaring flattening testing machine which comprises a rack, a pressure head is arranged in the rack, a hydraulic cylinder is arranged at the top of the pressure head, the hydraulic cylinder is in threaded connection with the pressure head, and a quick-change mounting plate is in threaded connection with the surface of the pressure head. According to the utility model, through simple system composition, the flaring experiment tool and the flattening experiment tool are manufactured to realize flaring and flattening experiments of welded pipes with different lengths and different diameters; the structure is simple, the investment is reduced, the cost is saved, the hydraulic cylinder type press machine is high in working pressure, stable in operation, large in working stroke freely-controlled adjusting range, large in working space, moderate in working efficiency and wide in application range, has a quick change function, can meet flaring and flattening experiments of welded pipes with different length dimensions, and is suitable for large-scale popularization and application. And the site space and the equipment investment cost are saved. The functions of mechanical limiting protection, overload protection and the like are achieved; noise is low, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion and flattening testing machines, in particular to a welded pipe quick-change expansion and flattening testing machine. Background Art

[0002] The expansion and flattening test machine is a test equipment used to detect the expansion and flattening performance of metal pipes. It is mainly used in the detection of metal pipes such as steel pipes, copper pipes, and aluminum pipes. The main function of the expansion and flattening test machine is to test the mechanical properties of metal pipes during the expansion and flattening deformation process, such as yield strength, tensile strength, elongation, etc.

[0003] At present, conventional mechanical press machines are divided into two types: crank arm type (punch press) and screw type (friction press, Shuangdong press). The crank arm type press transmits force by crank arm. ①: The running speed is too fast, it is difficult to control the degree of expansion and flattening of the welded pipe, and the risk is also high; ②: The working stroke is fixed and cannot be adjusted, and it is impossible to meet the expansion and flattening test of welded pipes of different lengths. ③: The working table is small, and in order to increase its transmission power, it is generally equipped with a large counterweight wheel (flywheel) and a large volume, and the noise is loud during operation; ④: The cost is relatively expensive.

[0004] Therefore, it is necessary to redesign the expansion and flattening test machine to effectively prevent the current conventional mechanical press force machine from being divided into two types: crank arm type (punch press) and screw type (friction press, Shuangdong press). The crank arm press transmits force by the crank arm. ①: The running speed is too fast, it is not easy to control the degree of expansion and flattening of the welded pipe, and the risk is also high; ②: The working stroke is fixed and cannot be adjusted, and it is impossible to meet the expansion and flattening test of welded pipes of different lengths. ③: The working table is small, and in order to increase its transmission power, it is generally equipped with a large counterweight wheel (flywheel) and a large volume, which makes a lot of noise during operation; ④: The cost is relatively expensive. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide a quick-change expansion and flattening testing machine for welded pipes, which has the functions of mechanical limit protection, overload protection, etc.; low noise, easy operation, etc., and solves the problem that the current conventional mechanical press force machine is divided into two types: crank arm type (punch press) and screw type (friction press, Shuangdong press). The crank arm press transmits force by the crank arm. ①: The running speed is too fast, and it is not easy to control the degree of expansion and flattening of the welded pipe, and the risk is also high; ②: The working stroke is fixed and cannot be adjusted, and it is impossible to meet the expansion and flattening test of welded pipes of different lengths. ③: The working table is small, and in order to increase its transmission power, it is generally equipped with a counterweight wheel (flywheel) with a large volume, and the noise is loud during operation; ④: The cost is relatively expensive.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welded pipe quick-change expansion and flattening testing machine, comprising a frame, a pressure head is arranged inside the frame, a hydraulic cylinder is arranged on the top of the pressure head, the hydraulic cylinder is threadedly connected to the pressure head, a quick-change mounting plate is threadedly connected to the surface of the pressure head, a quick-change expansion cone block is arranged at the bottom of the quick-change expansion cone block, a cone block fixing plate is arranged at the bottom of the quick-change expansion cone block, a left limit plate is fixedly connected to the left side of the quick-change mounting plate, a right limit plate is arranged on the right side of the quick-change mounting plate, a ball head plunger is threadedly connected to the outer side of the right limit plate, a rotating plunger is threadedly connected to the outer side of the right limit plate, a baffle is arranged on the outer side of the quick-change mounting plate, a fastening nut is arranged on the outer side of the baffle, and an adjustment bolt is arranged on the outer side of the fastening nut;

[0007] A quick-change flattening bottom plate is arranged on the outer side of the pressure head, and a protective door assembly is arranged on the outer side of the quick-change flattening bottom plate;

[0008] The protective door assembly includes a magnet, an upper door hinge, a hinge shaft, a lower door hinge, an upper combination screw, a lower combination screw, a transparent acrylic door, a magnetic mounting plate, a handle, a hinge mounting plate and an operating handle mounting plate. The magnet is fixedly connected to the surface of the transparent acrylic door, the upper door hinge is used in conjunction with the transparent acrylic door, the handle is fixedly connected to the surface of the transparent acrylic door, and the upper combination screw is used in conjunction with the hinge shaft;

[0009] The bottom of the frame is threadedly connected to a fixed base plate, the bottom of the fixed base plate is threadedly connected to a fixed chuck 1, the bottom of the fixed chuck 1 is provided with a fixed chuck 2, the bottom of the fixed chuck 2 is provided with an oil-free bushing, the interior of the oil-free bushing is provided with a guide shaft, the top of the fixed base plate is fixedly connected to an adjustment base, the top of the adjustment base is fixedly connected to a screw nut, the top of the adjustment base is provided with a trapezoidal screw, the oil-free bushing is used in conjunction with the fixed chuck 2, the surface of the trapezoidal screw is provided with a shaft retaining spring, and the other end of the trapezoidal screw is fixedly mounted with a handwheel.

[0010] As a preferred embodiment of the utility model, the hand wheel is used in conjunction with a trapezoidal screw rod, and the hand wheel is used in conjunction with a second fixed chuck.

[0011] As a preferred embodiment of the present invention, the second fixing chuck is used in conjunction with a trapezoidal lead screw.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model uses a simple system structure to make expansion test fixtures and flattening test fixtures to realize expansion and flattening tests of welded pipes of different lengths and diameters; the structure is simple, the investment is reduced, and the cost is saved. The hydraulic cylinder press has high working pressure, stable operation, free control of the working stroke, large adjustment range, large working space, moderate working efficiency, wide application, and built-in quick change function. One device can meet the expansion and flattening tests of welded pipes of different lengths and sizes, saving site space and equipment investment costs. It has functions such as mechanical limit protection and overload protection; low noise and easy operation.

[0014] 2. The utility model effectively improves the stability of the trapezoidal screw by arranging the hand wheel on the trapezoidal screw for use, making it convenient for users to operate the trapezoidal screw and use it.

[0015] 3. The utility model arranges the opposite side of the fixed chuck to cooperate with the trapezoidal screw rod, and the trapezoidal screw rod can control the spacing between the opposite sides of the fixed chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of the structural pressure head of the utility model;

[0018] Figure 3 It is an exploded schematic diagram of the hydraulic cylinder of the utility model structure.

[0019] In the figure: 1, frame; 2, pressure head; 3, hydraulic cylinder; 4, quick-change mounting plate; 5, quick-change flared cone block; 6, cone block fixing plate; 7, left limit plate; 8, right limit plate; 9, ball plunger; 10, rotating plunger; 11, baffle; 12, fastening nut; 13, adjusting bolt; 14, quick-change flattening bottom plate; 15, magnetic suction; 16, upper door hinge; 17, hinge shaft; 18, lower door hinge; 1 9. Upper combination screw; 20. Lower combination screw; 21. Transparent acrylic door; 22. Magnetic mounting plate; 23. Handle; 24. Hinge mounting plate; 25. Operating handle mounting plate; 26. Fixed base plate; 27. Fixed chuck 1; 28. Fixed chuck 2; 29. ​​Guide shaft; 30. Adjustment base; 31. Screw nut; 32. Trapezoidal screw; 33. Shaft retaining ring; 34. Handwheel; 35. Oil-free bushing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] like Figures 1 to 3 As shown, the utility model provides a welded pipe quick-change expansion and flattening testing machine, including a frame 1, a pressure head 2 is arranged inside the frame 1, a hydraulic cylinder 3 is arranged on the top of the pressure head 2, the hydraulic cylinder 3 is threadedly connected to the pressure head 2, a quick-change mounting plate 4 is threadedly connected to the surface of the pressure head 2, a quick-change expansion cone block 5 is arranged at the bottom of the quick-change expansion cone block 5, a cone block fixing plate 6 is arranged at the bottom of the quick-change expansion cone block 5, a left limit plate 7 is fixedly connected to the left side of the quick-change mounting plate 4, a right limit plate 8 is arranged on the right side of the quick-change mounting plate 4, a ball head plunger 9 is threadedly connected to the outer side of the right limit plate 8, a rotating plunger 10 is threadedly connected to the outer side of the right limit plate 8, a baffle 11 is arranged on the outer side of the quick-change mounting plate 4, a fastening nut 12 is arranged on the outer side of the baffle 11, and an adjusting bolt 13 is arranged on the outer side of the fastening nut 12;

[0022] A quick-change flattening bottom plate 14 is provided on the outside of the pressure head 2, and a protective door assembly is provided on the outside of the quick-change flattening bottom plate 14;

[0023] The protective door assembly includes a magnet 15, an upper door hinge 16, a hinge shaft 17, a lower door hinge 18, an upper assembly screw 19, a lower assembly screw 20, a transparent acrylic door 21, a magnetic mounting plate 22, a handle 23, a hinge mounting plate 24 and an operating handle mounting plate 25. The magnet 15 is fixedly connected to the surface of the transparent acrylic door 21, the upper door hinge 16 is used in conjunction with the transparent acrylic door 21, the handle 23 is fixedly connected to the surface of the transparent acrylic door 21, and the upper assembly screw 19 is used in conjunction with the hinge shaft 17;

[0024] The bottom of the frame 1 is threadedly connected to a fixed base plate 26, the bottom of the fixed base plate 26 is threadedly connected to a fixed chuck 1 27, the bottom of the fixed chuck 1 27 is provided with a fixed chuck 28, the bottom of the fixed chuck 28 is provided with an oil-free bushing 35, the interior of the oil-free bushing 35 is provided with a guide shaft 29, the top of the fixed base plate 26 is fixedly connected to an adjustment base 30, the top of the adjustment base 30 is fixedly connected to a screw nut 31, the top of the adjustment base 30 is provided with a trapezoidal screw 32, the oil-free bushing 35 is used in conjunction with the fixed chuck 28, the surface of the trapezoidal screw 32 is provided with a shaft retaining spring 33, and the other end of the trapezoidal screw 32 is fixedly mounted with a handwheel 34.

[0025] refer to Figure 3The hand wheel 34 is used in conjunction with the trapezoidal lead screw 32 , and the hand wheel 34 is used in conjunction with the fixed chuck 28 .

[0026] As a technical optimization solution of the utility model, by arranging the hand wheel 34 to be used in conjunction with the trapezoidal lead screw 32, the stability of the trapezoidal lead screw 32 is effectively improved, and it is convenient for users to operate the trapezoidal lead screw 32 and use it.

[0027] refer to Figure 3 The second fixing chuck 28 is used in conjunction with the trapezoidal lead screw 32 .

[0028] As a technical optimization solution of the present invention, by setting the opposite side of the fixed chuck to be used in conjunction with the trapezoidal screw rod 32, the trapezoidal screw rod 32 can control the spacing between the opposite sides of the fixed chuck.

[0029] The working principle and use process of the utility model: when in use, through a simple system structure, the expansion test fixture and the flattening test fixture are made to realize the expansion and flattening test of welded pipes of different lengths and diameters; and the structure is simple, the investment is reduced, and the cost is saved. The hydraulic cylinder 3-type press has a high working pressure, stable operation, and the working stroke can be freely controlled with a large adjustment range. The working space is large, the working efficiency is moderate, the application is wide, and it has a quick change function. One device can meet the expansion and flattening test of welded pipes of different lengths and specifications, saving site space and equipment investment costs. It has functions such as mechanical limit protection and overload protection; low noise, easy operation, etc.

[0030] In summary, the welded pipe quick-change expansion and flattening testing machine includes a frame 1, a pressure head 2, a hydraulic cylinder 3, a quick-change mounting plate 4, a quick-change expansion cone block 5, a cone block fixing plate 6, a left limit plate 7, a right limit plate 8, a ball head plunger 9, a rotating plunger 10, a baffle 11, a fastening nut 12, an adjusting bolt 13, a quick-change flattening bottom plate 14, a magnetic suction 15, a door hinge, a hinge shaft 17, a door hinge, an upper combination screw 19, a lower combination screw 20, a transparent acrylic door 21, a magnetic mounting plate 22, a handle 23, a hinge mounting plate 24, an operating handle mounting plate 25, and a fixed bottom plate 26. , fixed chuck 1 27, fixed chuck 2 28, guide shaft 29, adjustment base 30, screw nut 31, trapezoidal screw 32, shaft retaining ring 33, hand wheel 34 and oil-free bushing 35 are used together to solve the problem that the current conventional mechanical press force machine is divided into two types: crank arm type (punch press) and screw type (friction press, Shuangdong press). The crank arm press transmits force by the crank arm. ①: The running speed is too fast, it is not easy to control the degree of expansion and flattening of the welded pipe, and the risk is also high; ②: The working stroke is fixed and cannot be adjusted, and it is impossible to meet the expansion and flattening test of welded pipes of different lengths. ③: The working table is small, and in order to increase its transmission power, it is generally equipped with a counterweight wheel (flywheel) with a large volume, and the noise is loud during operation; ④: The cost is relatively expensive.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welded pipe quick-change expansion and flattening testing machine, comprising a frame (1), characterized in that: A pressure head (2) is arranged inside the frame (1), a hydraulic cylinder (3) is arranged on the top of the pressure head (2), the hydraulic cylinder (3) is threadedly connected to the pressure head (2), a quick-change mounting plate (4) is threadedly connected to the surface of the pressure head (2), a quick-change flared cone block (5) is arranged at the bottom of the quick-change flared cone block (5), a cone block fixing plate (6) is arranged at the bottom of the quick-change flared cone block (5), a left limit plate (7) is fixedly connected to the left side of the quick-change mounting plate (4), a right limit plate (8) is arranged on the right side of the quick-change mounting plate (4), a ball head plunger (9) is threadedly connected to the outer side of the right limit plate (8), a rotating plunger (10) is threadedly connected to the outer side of the right limit plate (8), a baffle (11) is arranged on the outer side of the quick-change mounting plate (4), a fastening nut (12) is arranged on the outer side of the baffle (11), and an adjustment bolt (13) is arranged on the outer side of the fastening nut (12); A quick-change flattening bottom plate (14) is arranged on the outside of the pressure head (2), and a protective door assembly is arranged on the outside of the quick-change flattening bottom plate (14); The protective door assembly comprises a magnet (15), an upper door hinge (16), a hinge shaft (17), a lower door hinge (18), an upper assembly screw (19), a lower assembly screw (20), a transparent acrylic door (21), a magnetic mounting plate (22), a handle (23), a hinge mounting plate (24) and an operating handle mounting plate (25); the magnet (15) is fixedly connected to the surface of the transparent acrylic door (21); the upper door hinge (16) is used in conjunction with the transparent acrylic door (21); the handle (23) is fixedly connected to the surface of the transparent acrylic door (21); and the upper assembly screw (19) is used in conjunction with the hinge shaft (17); The bottom of the frame (1) is threadedly connected to a fixed base plate (26), the bottom of the fixed base plate (26) is threadedly connected to a fixed chuck 1 (27), the bottom of the fixed chuck 1 (27) is provided with a fixed chuck 2 (28), the bottom of the fixed chuck 2 (28) is provided with an oil-free bushing (35), the interior of the oil-free bushing (35) is provided with a guide shaft (29), the top of the fixed base plate (26) is fixedly connected to an adjustment base (30), the top of the adjustment base (30) is fixedly connected to a lead screw nut (31), the top of the adjustment base (30) is provided with a trapezoidal lead screw (32), the oil-free bushing (35) is used in conjunction with the fixed chuck 2 (28), the surface of the trapezoidal lead screw (32) is provided with a shaft retaining ring (33), and the other end of the trapezoidal lead screw (32) is fixedly mounted with a hand wheel (34).

2. A welded pipe quick-change expansion and flattening testing machine according to claim 1, characterized in that: The hand wheel (34) is used in conjunction with the trapezoidal screw rod (32), and the hand wheel (34) is used in conjunction with the second fixing chuck (28).

3. The welded pipe quick-change expansion and flattening testing machine according to claim 1, characterized in that: The second fixing chuck (28) is used in conjunction with the trapezoidal lead screw (32).

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