Woven pultrusion pipe stretching detection device

Abstract

The utility model belongs to the technical field of pipe detection, and particularly relates to a woven pultrusion pipe stretching detection device which comprises a base, a shell fixedly connected to the base, a movable cross beam movably connected to the inner wall of the shell, a driving unit located in the shell and used for driving the movable cross beam to move up and down, and a tension detection assembly arranged in the shell. Two load applying parts are symmetrically connected to the upper end of the base, and each load applying part comprises a supporting and adjusting assembly arranged at the upper end of the base and a mounting plate connected to one side of the supporting and adjusting assembly; four-point bending loads can be applied to the woven pultrusion pipe between the tension detection assembly and the movable cross beam through the plate body, the plate body is used for simulating the real use condition of the woven pultrusion pipe, and the tension performance of the woven pultrusion pipe to which the bending loads are applied is detected through the tension detection assembly. The device can be used for detecting the tensile property of the woven pultrusion pipe under the bending load condition, and the applicability is better.

Description

Technical Field

[0001] The present application relates to the technical field of pipe detection, and specifically to a tensile detection device for braided pultruded pipes. Background Art

[0002] Braided pultruded pipes are high-performance fiber-reinforced composite pipes. In order to verify their physical properties and ensure that their quality meets the application requirements, it is necessary to perform tensile tests on braided pultruded pipes through a tensile detection device;

[0003] The prior art (a Chinese invention patent disclosed in CN118168907A) discloses a tensile test device for PVC water supply pipes. Although it can achieve tensile detection of pipes, it can only achieve tensile detection of vertical forces. In actual use, braided pultruded pipes often bear various types of loads, including axial tension, bending, etc. Therefore, the existing tensile detection device cannot detect the tensile properties of braided pultruded pipes under different load conditions. Summary of the Utility Model

[0004] The purpose of the present application is to provide a tensile detection device for braided pultruded pipes to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: A tensile detection device for braided pultruded pipes, including a base, a housing fixedly connected to the base, a movable crossbeam movably connected to the inner wall of the housing, a driving unit located inside the housing and used to drive the movable crossbeam to move up and down, and a tensile force detection component provided inside the housing. Two load application parts are symmetrically connected to the upper end of the base, and each load application part includes a support adjustment component arranged at the upper end of the base, a mounting plate connected to one side of the support adjustment component, a sliding seat slidably connected to one side of the mounting plate, a positioning screw hole opened in the mounting plate, a positioning bolt two passing through the sliding seat and screwed into the positioning screw hole, and a plate body connected to one side of the sliding seat.

[0006] In one implementation, the plate body is rotatably connected to one side of the sliding seat, and positioning holes are opened in both the sliding seat and the plate body, and a positioning pin is inserted into the positioning holes.

[0007] In one implementation, the support adjustment component includes a movable groove opened at the upper end of the base, a rotating block rotatably connected to the inner wall of the movable groove, a movable plate rotatably connected to the lower end of the rotating block, a positioning bolt one passing through the movable plate and screwed into the base, a chute one opened inside the rotating block, a lead screw one rotatably connected inside the chute one, a nut slidably connected in the chute one and screwed to the outside of the lead screw one, and a bracket fixedly connected to the upper end of the nut. The mounting plate is connected to one side of the bracket.

[0008] In one embodiment, a second chute is provided inside the bracket, and a second lead screw is rotatably connected inside the second chute. The mounting plate is slidably connected in the second chute and screwed outside the second lead screw. The upper end of the bracket is fixedly connected with a first motor, and the output shaft of the first motor penetrates through the bracket and is fixedly connected with one end of the second lead screw.

[0009] In one embodiment, the tensile force detection assembly includes a second motor fixedly connected to the upper end of the housing, a first gear rotatably connected inside the housing and fixedly connected to the output shaft of the second motor, a second gear rotatably connected inside the housing and meshing with the first gear, a conductive slip ring arranged on the inner wall of the housing, a rotating seat fixedly connected to the rotor end of the conductive slip ring, a first force measuring sensor fixedly connected inside the rotating seat, a first chuck fixedly connected to the detection end of the first force measuring sensor, and a first chuck rotatably connected to the upper end of the movable crossbeam. The stator end of the conductive slip ring is fixedly connected to the inner wall of the housing, and the upper end of the rotating seat penetrates through the conductive slip ring and is fixedly connected to the lower end of the second gear.

[0010] In one embodiment, a pressure detection assembly is connected to the lower end of the movable crossbeam, and the pressure detection assembly includes a second force measuring sensor fixedly connected to the lower end of the movable crossbeam and a second chuck fixedly connected to the detection end of the second force measuring sensor and the upper end of the base.

[0011] Compared with the prior art, the beneficial effects of the present application are as follows:

[0012] By providing a load application part in the present application, a four-point bending load can be applied to the braided pultruded pipe located between the tensile force detection assembly and the movable crossbeam through the plate body, so as to simulate the actual use situation of the braided pultruded pipe. The tensile force performance of the braided pultruded pipe subjected to the bending load is detected by the tensile force detection assembly, so that the device can detect the tensile performance of the braided pultruded pipe under the bending load, and the applicability is better. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0014] Figure 2 It is a schematic diagram of the structure of the tensile force detection assembly of the present application;

[0015] Figure 3 It is a schematic diagram of the structure of the support adjustment assembly of the present application;

[0016] Figure 4 It is a schematic diagram of the structure of the load application part of the present application.

[0017] In the figure: 1. Base; 11. Movable groove; 12. Rotating block; 13. Movable plate; 14. Positioning bolt 1; 15. First chute; 16. First lead screw; 17. Nut; 18. Bracket; 181. Second chute; 182. Second lead screw; 19. First motor; 2. Driving unit; 3. Movable crossbeam; 4. Tensile force detection component; 41. Second motor; 42. First gear; 43. Second gear; 44. Conductive slip ring; 45. Rotating seat; 46. First chuck; 5. Pressure detection component; 51. Second force measuring sensor; 52. Second chuck; 6. Load application part; 61. Mounting plate; 62. Slide block; 63. Positioning screw hole; 64. Positioning bolt 2; 65. Plate body; 66. Positioning hole; 67. Positioning pin; 7. Housing. Detailed implementation mode

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0020] Embodiment:

[0021] Please refer to Figures 1-4, this application provides a technical solution: a tensile testing device for braided pultruded pipes, including a base 1, a housing 7 fixedly connected to the base 1, a movable crossbeam 3 movably connected to the inner wall of the housing 7, a driving unit 2 located inside the housing 7 and used to drive the movable crossbeam 3 to move up and down (the driving unit 2 generally includes a motor and mechanical transmission devices, such as components like ball screws, gears, etc. The motor is controlled to rotate, and through a series of transmission mechanisms, the movable crossbeam 3 moves up and down, which belongs to mature existing technologies and will not be elaborated here), a tensile force detection component 4 provided inside the housing 7. Two load application parts 6 are symmetrically connected to the upper end of the base 1, and the load application part 6 includes a support adjustment component arranged at the upper end of the base 1, a mounting plate 61 connected to one side of the support adjustment component, a sliding seat 62 slidably connected to one side of the mounting plate 61, a positioning screw hole 63 opened in the mounting plate 61, a positioning bolt two 64 passing through the sliding seat 62 and screwed into the positioning screw hole 63, and a plate body 65 connected to one side of the sliding seat 62. After taking out the positioning screw hole 63 from the mounting plate 61, the sliding seat 62 can be moved on the plate body 65, which is convenient for adjusting the positions of the sliding seat 62 and the plate body 65.

[0022] The tensile force detection component 4 includes a motor two 41 fixedly connected to the upper end of the housing 7, a gear one 42 rotatably connected inside the housing 7 and fixedly connected to the output shaft of the motor two 41, a gear two 43 rotatably connected inside the housing 7 and meshed with the gear one 42, a conductive slip ring 44 arranged on the inner wall of the housing 7, a rotating seat 45 fixedly connected to the rotor end of the conductive slip ring 44, a force measuring sensor one fixedly connected inside the rotating seat 45 (a strain gauge type sensor. When the upper and lower ends of the pipe are clamped in the upper and lower chucks one 46, when the movable crossbeam 3 moves downward, it can apply a tensile force to the pipe, the upper chuck one 46, and the rotating seat 45. At this time, the force measuring sensor one inside the rotating seat 45 can detect the tensile force value), a chuck one 46 fixedly connected to the detection end of the force measuring sensor one, and a chuck one 46 rotatably connected to the upper end of the movable crossbeam 3. The stator end of the conductive slip ring 44 is fixedly connected to the inner wall of the housing 7, and the upper end of the rotating seat 45 penetrates through the conductive slip ring 44 and is fixedly connected to the lower end of the gear two 43.

[0023] By setting the above scheme, the pipe to be tested is placed between the upper and lower clamping heads 46. The upper end of the pipe is clamped and fixed by the upper clamping head 46. The driving unit 2 drives the movable crossbeam 3 to move upward, so that the lower clamping head 46 can approach the lower end of the pipe. Then, the lower end of the pipe is clamped and fixed by the lower clamping head 46. The driving unit 2 is controlled to drive the movable crossbeam 3 to move downward, so that the two clamping heads 46 move away from each other, thereby performing a tensile test on the pipe. The driving motor 41 can drive the first gear 42 and the second gear 43 to rotate. The rotation of the second gear 43 can drive the rotating seat 45, the upper clamping head 46, the pipe and the lower clamping head 46 to rotate, so as to perform a tensile test on the pipe while the pipe is rotating, which can better simulate the actual use scenario. The two groups of plate bodies 65 on both sides can contact the pipe and apply four loading points to the pipe to bend the pipe, thereby simulating the scenario where the pipe bends during the tensile process and realizing the bending tensile test of the pipe.

[0024] Please refer to Figure 4 , in this embodiment, the plate body 65 is rotatably connected to one side of the sliding seat 62, and positioning holes 66 are formed in both the sliding seat 62 and the plate body 65, and a positioning pin 67 is inserted into the positioning hole 66.

[0025] By setting the above scheme, it can be seen from Figure 4 that a plurality of positioning holes 66 are formed in the sliding seat 62. When the positioning pin 67 is pulled out from the plate body 65, the plate body 65 can be rotated on the sliding seat 62 to adjust the angle of the plate body 65. After the adjustment is completed, the positioning pin 67 is inserted into the positioning hole 66 to position the plate body 65. In this way, the angle of the plate body 65 can be adjusted, so that the plate body 65 can not only apply a load to the pipe in parallel, but also apply a load to the pipe at an inclined angle.

[0026] Please refer to Figure 3 , in this embodiment, the support adjustment assembly includes a movable groove 11 formed at the upper end of the base 1, a rotating block 12 rotatably connected to the inner wall of the movable groove 11, a movable plate 13 rotatably connected to the lower end of the rotating block 12, a positioning bolt 14 passing through the movable plate 13 and screwed into the base 1, a first chute 15 formed inside the rotating block 12, a first lead screw 16 rotatably connected to the inside of the first chute 15, a nut 17 slidably connected to the first chute 15 and screwed to the outside of the first lead screw 16, and a bracket 18 fixedly connected to the upper end of the nut 17. The mounting plate 61 is connected to one side of the bracket 18.

[0027] By setting the above solution, the position of the rotating block 12 can be fixed and limited through the movable plate 13 and the positioning bolt 1. This can prevent the rotating block 12 from rotating in the movable groove 11. By rotating the first lead screw 16, the position of the nut 17 can be adjusted, enabling the bracket 18 to move towards the pipe, thereby adjusting the distance between the plate body 65 and the pipe.

[0028] Please refer to Figure 4 , in this embodiment, a second chute 181 is provided inside the bracket 18, and a second lead screw 182 is rotatably connected inside the second chute 181. The mounting plate 61 is slidably connected in the second chute 181 and threadedly connected to the outside of the second lead screw 182. A first motor 19 is fixedly connected to the upper end of the bracket 18, and the output shaft of the first motor 19 penetrates through the bracket 18 and is fixedly connected to one end of the second lead screw 182.

[0029] By setting the above solution, when the movable crossbeam 3 moves downward, causing the two first chucks 46 to move away from each other, the pipe is stretched. At this time, the first motor 19 operates to drive the second lead screw 182 to rotate, thereby driving the mounting plate 61 to move. It should be noted here that the moving speeds of the mounting plate 61 and the movable crossbeam 3 are the same. In this way, when the mounting plate 61 moves, the plate body 65 can move along with the mounting plate 61. Thus, the four loading points of the plate body 65 acting on the pipe will move synchronously with the stretching of the pipe, preventing the four loading points on the pipe from changing when the pipe is stretched.

[0030] Please refer to Figure 1 , in this embodiment, a pressure detection assembly 5 is connected to the lower end of the movable crossbeam 3. The pressure detection assembly 5 includes a second force sensor 51 fixedly connected to the lower end of the movable crossbeam 3 and a second chuck 52 fixedly connected to the detection end of the second force sensor 51 and the upper end of the base 1. When the pipe is placed between the two second chucks 52, the lower end of the pipe is clamped and fixed by the second chucks 52. The movable crossbeam 3 is controlled to move downward so that the second chucks 52 can contact the upper end of the pipe, and then the upper end of the pipe is clamped and fixed by the second chucks 52. Then, the movable crossbeam 3 is driven to move downward to apply pressure to the pipe, realizing the pressure test on the pipe. The second force sensor 51 can detect the pressure value.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present application, the present application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A braided pultruded tube tensile testing device, comprising a base (1), a shell (7) fixedly connected to the base (1), a movable crossbeam (3) movably connected to the inner wall of the shell (7), a driving unit (2) located inside the shell (7) and used to drive the movable crossbeam (3) to move up and down, and a tension detection component (4) arranged inside the shell (7), characterized in that: The upper end of the base (1) is symmetrically connected to two load applying parts (6), and the load applying part (6) comprises a support adjustment component arranged at the upper end of the base (1), a mounting plate (61) connected to one side of the support adjustment component, a slide seat (62) slidably connected to one side of the mounting plate (61), a positioning screw hole (63) provided in the mounting plate (61), two positioning bolts (64) passing through the slide seat (62) and screwed into the positioning screw hole (63), and a plate body (65) connected to one side of the slide seat (62).

2. A braided pultruded pipe tensile testing device according to claim 1, characterized in that: The plate body (65) is rotatably connected to one side of the slide seat (62), and positioning holes (66) are provided inside the slide seat (62) and the plate body (65), and a positioning pin (67) is inserted into the positioning hole (66).

3. A braided pultruded pipe tensile testing device according to claim 2, characterized in that: The support adjustment assembly comprises a movable groove (11) provided at the upper end of the base (1), a rotating block (12) rotatably connected to the inner wall of the movable groove (11), a movable plate (13) rotatably connected to the lower end of the rotating block (12), a positioning bolt (14) passing through the movable plate (13) and screwed into the base (1), a sliding groove (15) provided inside the rotating block (12), a screw rod (16) rotatably connected inside the sliding groove (15), a screw seat (17) slidably connected in the sliding groove (15) and screwed onto the outside of the screw rod (16), and a bracket (18) fixedly connected to the upper end of the screw seat (17), and the mounting plate (61) is connected to one side of the bracket (18).

4. A braided pultruded pipe tensile testing device according to claim 3, characterized in that: The bracket (18) is provided with a second slide groove (181) inside, and a second screw rod (182) is rotatably connected inside the second slide groove (181), the mounting plate (61) is slidably connected in the second slide groove (181) and is screwed to the outside of the second screw rod (182), the upper end of the bracket (18) is fixedly connected to a motor (19), and the output shaft of the motor (19) passes through the bracket (18) and is fixedly connected to one end of the second screw rod (182).

5. A braided pultruded tube tensile testing device according to claim 1 or 4, characterized in that: The tension detection assembly (4) comprises a second motor (41) fixedly connected to the upper end of the housing (7), a first gear (42) rotatably connected inside the housing (7) and fixedly connected to the output shaft of the second motor (41), a second gear (43) rotatably connected inside the housing (7) and meshing with the first gear (42), a conductive slip ring (44) arranged on the inner wall of the housing (7), a rotating seat (45) fixedly connected to the rotor end of the conductive slip ring (44), a force sensor (1) fixedly connected inside the rotating seat (45), a clamp (46) fixedly connected to the detection end of the first force sensor, and a clamp (46) rotatably connected to the upper end of the movable crossbeam (3), wherein the stator end of the conductive slip ring (44) is fixedly connected to the inner wall of the housing (7), and the upper end of the rotating seat (45) passes through the conductive slip ring (44) and is fixedly connected to the lower end of the second gear (43).

6. A braided pultruded pipe tensile testing device according to claim 5, characterized in that: The lower end of the movable crossbeam (3) is connected to a pressure detection assembly (5), and the pressure detection assembly (5) comprises a second force sensor (51) fixedly connected to the lower end of the movable crossbeam (3), and a second clamp (52) fixedly connected to the detection end of the second force sensor (51) and the upper end of the base (1).

Images