A forming tube bending testing machine

Abstract

This utility model discloses a forming tube bending testing machine, belonging to the field of pipe bending testing technology. It includes a base plate, a support column fixedly mounted on the upper surface of the base plate, a platform fixedly mounted on the top of the support column, a power mechanism fixedly mounted on the upper surface of the platform, and a fixing mechanism fixedly mounted on the side wall of the support column. The forming tube is assembled between the output end of the fixing mechanism and the power mechanism. An elbow assembly is symmetrically mounted on the upper surface of the base plate. This utility model uses hydraulically driven wedge-shaped adjusting blocks to move, thereby pushing multiple bending support blocks to slide along a fixed rod. This changes the distribution radius of the fan-shaped support surface formed by the bending support blocks and the fixed support blocks. Without changing the physical mold, the same set of elbow assemblies can adapt to the bending test requirements of forming tubes of different diameters or achieve test requirements of different bending radii, improving the versatility and experimental efficiency of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline bending test technology, and specifically provides a forming pipe bending test machine. Background Technology

[0002] In the field of pipe processing technology, bending tests on formed pipes are a crucial step in verifying their performance. Existing bending testing equipment typically requires pre-preparing and installing molds or elbows of specific dimensions based on the target bending radius. When the specifications of the formed pipe or the required bending radius changes, the machine must be stopped and the entire set of molds replaced, resulting in cumbersome operations, lengthy preparation times, and significantly impacting testing efficiency. Furthermore, traditional fixed elbows make it difficult to quickly switch and compare different bending radii in a single test, indicating insufficient adaptability and flexibility of the equipment. Utility Model Content

[0003] To solve the above problems, this utility model provides a forming tube bending test machine.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a forming tube bending test machine, characterized in that: it includes a base plate, a support column is fixedly installed on the upper surface of the base plate, a platform is fixedly installed on the top of the support column, a power mechanism is fixedly installed on the upper surface of the platform, a fixing mechanism is fixedly installed on the side wall of the support column, and the forming tube is assembled between the output end of the fixing mechanism and the power mechanism, and an elbow assembly is symmetrically and movable on the upper surface of the base plate;

[0005] The elbow assembly includes a movable block, a fixed support block, and a bending support block. The movable block is movably assembled onto a base plate. A support column is fixedly installed on the upper surface of the movable block. Fixed rods are uniformly fixedly installed on the upper outer surface of the support column. One fixed support block and multiple bending support blocks are respectively movably assembled onto the ends of the fixed rods. Fixed plates are uniformly fixedly installed on the upper outer surface of the support column, and the fixed plates and fixed rods are staggered. A wedge-shaped adjusting block is fixedly installed at the end of the fixed plate, and the wedge-shaped adjusting block is staggered with the bending support block.

[0006] Furthermore, the power mechanism includes a first motor, a rotating rod is fixedly installed at the output end of the first motor, a transmission rod is vertically fixedly installed at the end of the rotating rod, and a movable positioning head is fixedly installed at the lower end of the inner surface of the transmission rod.

[0007] Furthermore, the fixing mechanism includes a mounting plate, which is fixedly installed on the side wall of the support column. A fixed positioning head corresponding to the movable positioning head is fixedly installed in the middle of the inner surface of the mounting plate. Fixed support rods are symmetrically fixedly installed on the inner surface of the mounting plate, and fixed support blocks are fixedly installed at the ends of the fixed support rods.

[0008] Furthermore, a second motor is fixedly installed on the upper surface of the base plate, and a double-threaded rod is fixedly installed at the output end of the second motor. Threaded holes are opened on the surface of the moving block, and the two moving blocks are symmetrically screwed onto different threads of the double-threaded rod.

[0009] Furthermore, a slide rail is fixedly installed on the upper surface of the base plate, and a slide groove matching the slide rail is opened on the lower surface of the moving block, and the moving block is movably assembled on the slide rail.

[0010] Furthermore, both the fixed support block and the bending support block have symmetrical cylindrical grooves on their inner end faces, and the end of the fixing rod is inserted into the cylindrical groove. A spring is fixedly installed in the inner end of each cylindrical groove, and the end of the spring is fixedly installed in the end of the fixing rod.

[0011] Furthermore, a reinforcing rod is fixedly installed between vertically adjacent fixed rods.

[0012] Furthermore, slots are provided on the outer surface of the fixed support block and on both sides of the curved support block, and the wedge-shaped adjusting block is moved and assembled in the slot.

[0013] Furthermore, the end of the wedge-shaped adjusting block is provided with a hydraulic cavity, and the fixing plate is inserted and assembled in the hydraulic cavity. The fixing plate and the support column are provided with a hydraulic channel, and the hydraulic channel is connected to an external hydraulic pump through a pipeline.

[0014] The beneficial effects of using this utility model are:

[0015] This invention uses hydraulically driven wedge-shaped adjusting blocks to move, thereby pushing multiple bending support blocks to slide along a fixed rod. This changes the distribution radius of the fan-shaped support surface formed by the bending support blocks and the fixed support blocks. Without changing the physical mold, the same set of elbow components can be adapted to the bending test requirements of forming pipes of different diameters, or to achieve test requirements of different bending radii, thus improving the versatility and experimental efficiency of the equipment.

[0016] In this invention, the bending support block and the fixed support block are connected to the end of the fixed rod by a spring. When the adjusting wedge block moves inward, each bending support block can automatically and evenly contract towards the center under the action of the spring force, thereby quickly forming a fan-shaped support surface with a uniform radius and even distribution. This realizes the synchronous adjustment operation of multiple support blocks and ensures that the formed tube can obtain smooth and consistent arc support when bending, avoiding local deformation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is a partial three-dimensional schematic diagram of the present invention.

[0019] Figure 3 This is one of the three-dimensional schematic diagrams of the elbow assembly of this utility model.

[0020] Figure 4 This is the second perspective view of the elbow assembly of this utility model.

[0021] Figure 5 This is a three-dimensional sectional view of the elbow assembly of this utility model.

[0022] The reference numerals in the attached drawings include: 1. base plate; 11. slide rail; 2. support column; 3. platform; 4. power mechanism; 41. first motor; 42. rotating rod; 43. transmission rod; 44. movable positioning head; 5. fixing mechanism; 51. fixed positioning head; 52. fixed support rod; 6. second motor; 61. double threaded rod; 7. elbow assembly; 71. moving block; 72. support column; 73. fixed rod; 731. reinforcing rod; 74. fixed support block; 75. bending support block; 76. spring; 77. fixing plate; 78. wedge-shaped adjusting block; 79. slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 5 A forming tube bending test machine includes a base plate 1, a support column 2 fixedly installed on the upper surface of the base plate 1, a platform 3 fixedly installed at the top of the support column 2, a power mechanism 4 fixedly installed on the upper surface of the platform 3, a fixing mechanism 5 fixedly installed on the side wall of the support column 2, and the forming tube is assembled between the fixing mechanism 5 and the output end of the power mechanism 4. An elbow assembly 7 is symmetrically mounted on the upper surface of the base plate 1.

[0025] The two ends of the forming tube are fixed to the output ends of the fixing mechanism 5 and the power mechanism 4, respectively. The power mechanism 4 provides power to apply a force to the forming tube to make it bend, driving the forming tube along the elbow assembly 7 and completing the bending test of the forming tube.

[0026] The elbow assembly 7 includes a movable block 71, a fixed support block 74, and a bending support block 75. The movable block 71 is movably mounted on the base plate 1. A support column 72 is fixedly installed on the upper surface of the movable block 71. A fixing rod 73 is evenly fixedly installed on the upper outer surface of the support column 72. One fixed support block 74 and multiple bending support blocks 75 are respectively movably mounted on the end of the fixing rod 73. A fixing plate 77 is evenly fixedly installed on the upper outer surface of the support column 72, and the fixing plate 77 and the fixing rod 73 are staggered. A wedge-shaped adjusting block 78 is fixedly installed at the end of the fixing plate 77, and the wedge-shaped adjusting block 78 and the bending support block 75 are staggered.

[0027] The elbow assembly 7 can move on the base plate 1; the wedge-shaped adjusting block 78 is an isosceles triangle structure.

[0028] In the elbow assembly 7, the movement of the wedge adjusting block 78 is controlled and its position is fixed by hydraulic means. When the wedge adjusting block 78 is fixed, it will restrict the position of the bending support block 75, so that the bending support block 75 and the fixed support block 74 are distributed in a fan shape, which supports and limits the bending of the forming tube, so that the forming tube can complete the bending test of a fixed diameter.

[0029] When the position of the wedge-shaped adjusting block 78 is adjusted, the bending support block 75 will move, changing the distribution radius of the bending support block 75, thereby adjusting the bending radius of the formed tube. At the same time, the moving block 71 and the support column 72 will move synchronously, adjusting the position of the support column 72 and the fixed support block 74 to ensure the integrity of the fan-shaped distribution. This makes the bending radius adjustable and is suitable for bending experiments of formed tubes of different diameters. Compared with changing the elbow (i.e., bending die), its operation is simpler and more convenient.

[0030] Specifically, the power mechanism 4 includes a first motor 41, a rotating rod 42 is fixedly installed at the output end of the first motor 41, a transmission rod 43 is vertically fixedly installed at the end of the rotating rod 42, and a movable positioning head 44 is fixedly installed at the lower end of the inner surface of the transmission rod 43.

[0031] The first motor 41, through the transmission of the rotating rod 42 and the transmission rod 43, can drive the movable positioning head 44 to perform circular motion.

[0032] Specifically, the fixing mechanism 5 includes a mounting plate, which is fixedly installed on the side wall of the support column 2. A fixed positioning head 51 corresponding to the movable positioning head 44 is fixedly installed in the middle of the inner surface of the mounting plate. Fixed support rods 52 are fixedly installed symmetrically on the inner surface of the mounting plate, and fixed support blocks 74 are fixedly installed at the ends of the fixed support rods 52.

[0033] One end of the forming tube is fixed to the fixed positioning head 51, and the other end is fixed to the movable positioning head 44. When the movable positioning head 44 makes a circular motion, it will cause the forming tube to bend and smoothly bend along the bending support block 75 with a fixed diameter.

[0034] The fixed support block 74 is fixed to the end of the fixed support rod 52. The purpose of the fixed support block 74 is to determine the position of the fixed support block 74. The fixed support block 74 is located at the position where the forming tube begins to bend. Its position can ensure that the forming tube bends smoothly and avoid deformation of the forming tube at the initial bending point, which would affect the experimental results.

[0035] Specifically, a second motor 6 is fixedly installed on the upper surface of the base plate 1, and a double threaded rod 61 is fixedly installed at the output end of the second motor 6. Threaded holes are opened on the surface of the moving block 71, and the two moving blocks 71 are symmetrically screwed onto different threads of the double threaded rod 61.

[0036] The two ends of the double threaded rod 61 are provided with threads of opposite directions; the second motor 6 drives the double threaded rod 61 to rotate, which in turn drives the two moving blocks 71 to move synchronously in opposite directions, so as to realize the synchronous adjustment of the two sets of elbow assemblies 7.

[0037] In some experimental operations, two sets of second motors 6 and threaded rods installed at the output end can be set up to adjust the position of the two sets of elbow assemblies 7 respectively.

[0038] Specifically, a slide rail 11 is fixedly installed on the upper surface of the base plate 1, and a sliding groove matching the slide rail 11 is opened on the lower surface of the moving block 71, and the moving block 71 is movably assembled on the slide rail 11.

[0039] The design of the slide and slide rail 11 plays an auxiliary guiding role in the movement of the moving block 71.

[0040] Specifically, both the fixed support block 74 and the bending support block 75 have cylindrical grooves symmetrically opened on their inner end faces, and the end of the fixed rod 73 is inserted into the cylindrical groove. A spring 76 is fixedly installed in the inner end of each cylindrical groove, and the end of the spring 76 is fixedly installed in the end of the fixed rod 73.

[0041] The spring 76 is always in a stretched state. When the control wedge adjusting block 78 moves toward the support column 72, the bending support block 75 can move inward under the action of the spring 76 to achieve a fan-shaped distribution with a uniform radius. Conversely, it can also achieve a fan-shaped distribution with a uniform radius under the push of the wedge adjusting block 78. During the bending process, the spring does not provide support force for the bending support block 75. Support for it is achieved by the wedge adjusting block 78.

[0042] Specifically, a reinforcing rod 731 is fixedly installed between vertically adjacent fixing rods 73 to improve the strength of the fixing rods 73.

[0043] Specifically, slots 79 are provided on the outer surface of the fixed support block 74 and on both sides of the curved support block 75, and the wedge-shaped adjusting block 78 is movably fitted into the slots 79.

[0044] Specifically, the wedge-shaped adjusting block 78 has a hydraulic cavity at its end, and the fixing plate 77 is inserted into the hydraulic cavity. The fixing plate 77 and the support column 72 have a connected hydraulic channel, and the hydraulic channel is connected to an external hydraulic pump through a pipeline.

[0045] like Figure 1 As shown, a hydraulic channel is also provided on the movable block 71. Pipelines are installed through this hydraulic channel and connected to an external hydraulic pump. The position of the wedge-shaped adjusting block 78 on the fixed plate 77 is adjusted by hydraulic adjustment, thereby adjusting the position of the bending support block 75 and changing the bending radius, making this device suitable for bending experiments of formed tubes with different radii.

[0046] When adjusting the radius, it is necessary to adjust it without placing the forming tube, and the position of the first motor 41 on the platform 3 needs to be adjusted synchronously. In addition, a slide can be set on the platform so that the first motor 41 can be mounted on the slide, which facilitates position adjustment and further improves the ease of operation.

[0047] In this embodiment, there are 6 curved support blocks 75. Together with the fixed support block 74, they can form a fan-shaped distribution with an angle of 90°. The number and spacing of these blocks can be adjusted according to specific experimental conditions to achieve different support effects and angles, making them suitable for different experimental situations.

[0048] The above content is only a preferred embodiment of this utility model. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the concept of this utility model. As long as these changes do not depart from the concept of this utility model, they all fall within the protection scope of this utility model.

Claims

1. A forming tube bending testing machine, characterized in that: The system includes a base plate, a support column fixedly mounted on the upper surface of the base plate, a platform fixedly mounted on the top of the support column, a power mechanism fixedly mounted on the upper surface of the platform, a fixing mechanism fixedly mounted on the side wall of the support column, and a forming tube assembled between the output end of the fixing mechanism and the power mechanism. An elbow assembly is symmetrically and movablely mounted on the upper surface of the base plate. The elbow assembly includes a movable block, a fixed support block, and a bending support block. The movable block is movably assembled onto a base plate. A support column is fixedly installed on the upper surface of the movable block. Fixed rods are uniformly fixedly installed on the upper outer surface of the support column. One fixed support block and multiple bending support blocks are respectively movably assembled onto the ends of the fixed rods. Fixed plates are uniformly fixedly installed on the upper outer surface of the support column, and the fixed plates and fixed rods are staggered. A wedge-shaped adjusting block is fixedly installed at the end of the fixed plate, and the wedge-shaped adjusting block is staggered with the bending support block.

2. The forming tube bending testing machine according to claim 1, characterized in that: The power mechanism includes a first motor, a rotating rod is fixedly installed at the output end of the first motor, a transmission rod is vertically fixedly installed at the end of the rotating rod, and a movable positioning head is fixedly installed at the lower end of the inner surface of the transmission rod.

3. The forming tube bending testing machine according to claim 2, characterized in that: The fixing mechanism includes a mounting plate, which is fixedly installed on the side wall of the support column. A fixed positioning head corresponding to the movable positioning head is fixedly installed in the middle of the inner surface of the mounting plate. Fixed support rods are fixedly installed symmetrically on the inner surface of the mounting plate, and fixed support blocks are fixedly installed at the ends of the fixed support rods.

4. The forming tube bending testing machine according to claim 1, characterized in that: A second motor is fixedly installed on the upper surface of the base plate, and a double threaded rod is fixedly installed at the output end of the second motor. The surface of the moving block is provided with threaded holes, and the two moving blocks are symmetrically screwed onto different threads of the double threaded rod.

5. The forming tube bending testing machine according to claim 1, characterized in that: The upper surface of the base plate is fixedly installed with a slide rail, and the lower surface of the moving block is provided with a slide groove that matches the slide rail, and the moving block is movably assembled on the slide rail.

6. The forming tube bending testing machine according to claim 1, characterized in that: Both the fixed support block and the bending support block have symmetrical cylindrical grooves on their inner end faces, and the end of the fixing rod is inserted into the cylindrical groove. A spring is fixedly installed in the inner end of each cylindrical groove, and the end of the spring is fixedly installed in the end of the fixing rod.

7. The forming tube bending testing machine according to claim 1, characterized in that: A reinforcing rod is fixedly installed between the vertically adjacent fixed rods.

8. The forming tube bending testing machine according to claim 1, characterized in that: The outer surface of the fixed support block and both sides of the curved support block are provided with slots, and the wedge-shaped adjusting block is moved and assembled in the slot.

9. The forming tube bending testing machine according to claim 1, characterized in that: The end of the wedge-shaped adjusting block is provided with a hydraulic cavity, and the fixing plate is inserted and assembled in the hydraulic cavity. The fixing plate and the support column are provided with a hydraulic channel, and the hydraulic channel is connected to an external hydraulic pump through a pipeline.

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