Conveying system bend adjusting pipe testing device

Abstract

The embodiment of the utility model provides a conveying system bend adjusting pipe testing device, and belongs to the technical field of medical instruments. The conveying system bend adjusting pipe testing device comprises a base, a positioning unit, an angle measuring unit and an adjusting unit. The positioning unit, the angle measuring unit and the adjusting unit are arranged on the base; the positioning unit is used for positioning the tested bend adjusting pipe, and the angle measuring unit is used for measuring the bending angle of the adjustable bending part of the tested bend adjusting pipe; the adjusting unit is connected with the adjustable bending part of the tested adjustable bending pipe through the traction piece, and the adjusting unit is used for driving the traction piece to move so as to bend the adjustable bending part; and a force measuring assembly is arranged between the adjusting unit and the traction piece and is used for acquiring tension data of the traction piece in the bending process of the adjustable bending part of the tested bending adjusting pipe. According to the conveying system bend adjusting pipe testing device, the relation between the bend adjusting force and the bend adjusting angle of the tested bend adjusting pipe in the bend adjusting process can be represented.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and more particularly, to a test device for the bending tube of a delivery system. Background Art

[0002] Interventional medicine is a new discipline that combines image diagnosis and clinical treatment. It refers to a general term for a series of techniques that, under the guidance and monitoring of imaging devices such as digital subtraction angiography machines, CTs, ultrasounds, and magnetic resonances, use puncture needles, catheters, and other interventional devices to introduce specific instruments into the lesion site of the human body through natural orifices or small incisions in the human body for minimally invasive treatment.

[0003] In the existing devices used in interventional medicine, a delivery system is required in which the distal end of the catheter can extend into the patient's body and can be manipulated by the operator outside the body, so as to perform surgery and treatment on the patient's lesion. Generally, the delivery system includes an adjustable bending tube to adapt to curved blood vessels or to make a turn within the body cavity of the human body. Before use, the bending tube usually needs to test the correspondence between the bending operation and the bending angle. Such a test device is usually called a delivery system bending test device or a bending tooling. For example, the patent with the publication number CN219236134U discloses a bending tooling. In this solution, the operator controls the bending of the distal end of the catheter and knows the bending angle of the distal end through the angle scale. However, during the bending process, the operator cannot know the change relationship between the force change of the traction member and the bending angle of the bending tube, which is not conducive to the operator judging the bending angle of the bending tube according to the bending force of the traction member, resulting in a decrease in the accuracy and efficiency of the surgery. Summary of the Utility Model

[0004] This application provides a test device for the bending tube of a delivery system, which can characterize the relationship between the bending force and the bending angle of the tested bending tube during the bending process.

[0005] This application provides a test device for the bending tube of a delivery system. The test device for the bending tube of a delivery system is used to perform a bending test on the tested bending tube. The test device for the bending tube of a delivery system includes a base, a positioning unit, an angle measurement unit, and an adjustment unit; the positioning unit, the angle measurement unit, and the adjustment unit are arranged on the base; the positioning unit is used to position the tested bending tube, and the angle measurement unit is used to measure the bending angle of the adjustable bending part of the tested bending tube; the adjustment unit is connected to the adjustable bending part of the tested bending tube through a traction member, and the adjustment unit is used to drive the traction member to move so as to bend the adjustable bending part; wherein, a force measuring component is arranged between the adjustment unit and the traction member, and the force measuring component is used to obtain the tension data of the traction member during the bending process of the adjustable bending part of the tested bending tube.

[0006] In this solution, the base provides the functions of bearing and installation for the positioning unit, the angle measurement unit and the adjustment unit. The positioning unit is installed on the base and can position the bendable pipe to be measured, ensuring that the adjustable bending part of the bendable pipe to be measured remains fixed during the bending process of the traction part in the adjustment unit, and ensuring the bending accuracy during the bending process of the bendable pipe to be measured. The angle measurement unit can measure the bending angle of the adjustable bending part of the bendable pipe to be measured. Moreover, by arranging a force measuring component between the adjustment unit and the traction part, the force measuring component can obtain the pulling force data of the traction part during the bending process of the adjustable bending part of the bendable pipe to be measured. In this way, the operator can combine the pulling force data during the bending process of the adjustable bending part with the bending angle to obtain the relationship between the bending angle and the bending force value of the bendable pipe to be measured, which is more convenient for evaluating the bending ability of the bendable pipe to be measured and is conducive to the operator better bending the bendable pipe during the actual bending process later.

[0007] In some embodiments, the adjustment unit includes a first guide rail, a first slider and a driving component. The first guide rail is arranged on the base; the first slider is slidably arranged on the first guide rail, the force measuring component is arranged on the first slider and is connected to the proximal end of the traction part; the driving component is used to drive the first slider to slide on the first guide rail so as to drive the traction part to move along the first guide rail.

[0008] In the above technical solution, by driving the first slider to move on the first guide rail by the driving component, the first guide rail can play a role in guiding the first slider to move in a fixed direction, thereby driving the traction part to move in a fixed direction, so that the adjustable bending part of the bendable pipe to be measured is bent, realizing the bending of the adjustable bending part of the bendable pipe to be measured, and the operation is convenient and fast.

[0009] In some embodiments, the force measuring component includes a second slider and a force measuring part. The second slider is slidably arranged on the first guide rail and is located between the first slider and the positioning unit. The second slider is connected to the proximal end of the traction part; the force measuring part is arranged on the first slider, and the force measuring end of the force measuring part is connected to the second slider.

[0010] In the above technical solution, since the traction part is generally a filamentous structure, it is not convenient for the force measuring end of the force measuring part to be directly connected to the traction part. Therefore, by arranging a second slider on the first guide rail and connecting the second slider to the proximal end of the traction part, it is equivalent to connecting the proximal end of the traction part and the second slider as a whole. In this way, compared with the traction part, the second slider has a larger volume, which is more convenient for the force measuring end of the force measuring unit to be stably connected to the second slider, ensuring the stability of the pulling force test during the bending process of the adjustable bending part by the traction part.

[0011] In some embodiments, the second slider includes a sliding part, a pressing block and a locking screw. The sliding part is in sliding fit with the first guide rail, and the locking screw is in threaded fit with the pressing block for applying a downward pressure to the pressing block so that the pressing block presses the traction part on the sliding part.

[0012] In the above technical solution, the sliding part and the first guide rail are in sliding fit to realize the sliding function of the second slider on the first guide rail. The locking screw and the pressing block are in threaded fit, which can provide a pressing force to the pressing block. The pressing block presses on the traction part on the sliding part to realize the fixation of the proximal end of the traction part on the second slider. Moreover, the setting of the locking screw can adjust the magnitude of the pressing force on the traction part by rotating the locking screw. When it is necessary to remove the traction part, only need to loosen the locking screw, and after canceling the pressing force of the pressing block on the sliding part, the traction part can be removed, and the operation is convenient and fast.

[0013] In some embodiments, a displacement measuring component is provided on the base, and the displacement measuring component is used to measure the displacement of the first slider and / or the second slider.

[0014] In the above technical solution, by providing a displacement measuring component on the base, the displacement measuring component can measure the displacement of the first slider and / or the second slider, and then the displacement of the traction part can be obtained. In this way, during the bending test of the to-be-tested bent pipe by the operator, by reading the moving distance of the first slider or the second slider, the bending angle of the to-be-tested bent pipe, and the peak value of the force measuring component, the relationship among the bending force of the to-be-tested bent pipe, the moving distance of the traction part, and the bending angle can be evaluated, which is more convenient to evaluate the bending ability of the to-be-tested bent pipe.

[0015] In some embodiments, the driving assembly includes a mounting seat, a lead screw, a nut seat, a guiding part, and a driving part. The mounting seat is arranged on the base, the lead screw is rotatably mounted on the mounting seat, and the axial direction of the lead screw is arranged in the same direction as the length direction of the first guide rail; the nut seat is in threaded fit with the lead screw, and the nut seat is connected to the first slider through a connecting part; the guiding part is arranged on the mounting seat, and the guiding part is in sliding fit with the nut seat; the driving part is arranged on the mounting seat, and the driving part is used to drive the lead screw to rotate along its axis direction.

[0016] In the above technical solution, by adopting a lead screw-nut pair mechanism for the driving assembly, the nut seat and the guiding part are in sliding fit, thereby preventing the nut seat from rotating synchronously with the lead screw. Driven by the driving part, the lead screw rotates, which can drive the nut seat to move along the axial direction of the lead screw. And the nut seat is connected to the first slider through a connecting part, and the movement of the nut seat can drive the first slider to move on the first guide rail. Furthermore, the bending test of the adjustable bending part of the to-be-tested bent pipe can be realized through the traction part. During the test, the displacement of the traction part changes linearly. Only by controlling the rotation amount of the lead screw, the displacement of the traction part can be controlled, and the accuracy of the bending test of the to-be-tested bent pipe is higher.

[0017] In some embodiments, the driving part includes a driving box, a bevel gear set, and a rotating handle. The bevel gear set is installed in the driving box, the rotating handle is connected to the lead screw through the bevel gear set, the rotation axis of the rotating handle is perpendicular to the rotation axis of the lead screw, and the rotating handle is used to drive the lead screw to rotate through the bevel gear set.

[0018] In the above technical solution, the rotating handle is connected to the lead screw through a bevel gear set, and the rotation axis of the rotating handle is perpendicular to the rotation axis of the lead screw. In this way, when an operator operates the rotating handle, only a horizontal force needs to be applied to the rotating handle, making it more convenient and labor-saving to rotate the handle and reducing the force requirement for the operator.

[0019] In some embodiments, the positioning unit includes a positioning seat and a pressing member. The positioning seat is disposed on the base, and the positioning seat has a positioning groove for the test bending pipe to pass through; the pressing member is movably disposed on the positioning seat so that the pressing member can approach or move away from the positioning groove, and the pressing member is used to press and position the test bending pipe located in the positioning groove.

[0020] In the above technical solution, the positioning seat has a positioning groove for the test bending pipe to pass through. In this way, the test bending pipe passes through the positioning groove. By moving the pressing member closer to or away from the positioning groove, the pressing member is used to press and position the test bending pipe located in the positioning groove, and the positioning stability of the test bending pipe is high. When it is necessary to cancel the pressing and positioning of the test bending pipe, only by moving the pressing member in a direction away from the positioning groove can the test bending pipe be removed, and the operation is convenient and fast.

[0021] In some embodiments, the number of pressing members is set to be multiple, and the multiple pressing members are spaced apart along the length direction of the test bending pipe on the positioning seat.

[0022] In the above technical solution, by setting the number of pressing members to be multiple and the multiple pressing members cooperating together, multi-point pressing and positioning can be achieved for the test bending pipe, and the positioning stability of the test bending pipe is high, reducing the risk of displacement of the test bending pipe during the bending process.

[0023] In some embodiments, the positioning unit further includes a support seat. The support seat is disposed on the base and is located on one side of the positioning seat. The support seat has a limiting hole for providing support and limiting for the test bending pipe.

[0024] In the above technical solution, since the lengths of the test bending pipes are different and the length of the positioning seat is limited, the end portion of the test bending pipe extending out of the positioning seat is prone to downward bending under the action of gravity, which will affect the bending test of the test bending pipe by the traction member. By providing a support seat on one side of the positioning seat and providing a limiting hole on the support seat, the limiting hole can provide a function of bearing and limiting for the end portion of the test bending pipe, can be applicable to the bending tests of test bending pipes with different lengths, has a wider application range, and avoids affecting the accuracy of the force measurement data of the traction member due to the contact or abutment between the traction member and the inner wall of the test bending pipe caused by the bending of the end portion of the test bending pipe.

[0025] In some embodiments, the number of the supporting seats is two, and the two supporting seats are respectively located on both sides of the positioning seat in the length direction.

[0026] In the above technical solution, by setting the number of the supporting seats to two, the two supporting seats can respectively provide the functions of bearing and limiting for both ends of the to-be-tested bent pipe, ensuring the accuracy of the bending test of the to-be-tested bent pipe.

[0027] In some embodiments, the angle measurement unit includes an angle disk and a second guide rail. The angle disk is arranged on the base, and there is a measurement area on the angle disk for measuring the bending of the adjustable bending part of the to-be-tested bent pipe. A scale is arranged around the outer periphery of the measurement area of the angle disk; the second guide rail is arranged on the base, the angle disk is slidably arranged on the second guide rail, and the extending direction of the second guide rail is arranged in the same direction as the extending direction of the first guide rail.

[0028] In the above technical solution, through the setting of the angle disk, the adjustable bending part of the to-be-tested bent pipe is located in the measurement area of the angle disk. When the adjustable bending part bends on the plane where the angle disk is located, the bending angle of the adjustable bending part can be read through the scale in the measurement area. By sliding the angle disk on the second guide rail, the distance between the angle disk and the positioning unit can be adjusted, so as to be applicable to the bending test of the to-be-tested bent pipes with different bending sections, and the application range of the test device is wider.

[0029] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 is a schematic structural diagram of a conveying system bent pipe test device provided for some embodiments of the present application;

[0032] Figure 2 is a schematic structural diagram of a conveying system bent pipe test device provided for some embodiments of the present application after removing the support frame;

[0033] Figure 3 is Figure 2 an enlarged schematic diagram of A in

[0034] Figure 4 is Figure 2 an enlarged schematic diagram of B in

[0035] Figure 5For Figure 2 A sectional view of the positioning base in the middle.

[0036] Icons: 100 - Bend pipe testing device; 10 - Base; 11 - Testing platform; 12 - Support frame; 120 - Column; 121 - Connecting rod; 122 - Movable wheel; 20 - Positioning unit; 21 - Positioning base; 22 - Pressing member; 220 - Pressing part; 23 - Support base; 30 - Angle measuring unit; 31 - Angle dial; 310 - Scale; 32 - Second guide rail; 40 - Adjusting unit; 41 - First guide rail; 42 - First slider; 43 - Driving assembly; 430 - Mounting base; 431 - Lead screw; 432 - Nut seat; 433 - Guide part; 434 - Driving member; 4341 - Driving box; 4342 - Rotating handle; 44 - Connecting member; 50 - Force measuring assembly; 51 - Second slider; 511 - Sliding part; 512 - Pressing block; 514 - Hanging part; 52 - Force measuring component; 521 - Force measuring end; 200 - Bend pipe to be tested; 201 - Body; 202 - Adjustable bending part. Specific embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0039] It should be noted that like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship in which the product of this application is usually placed during use. It 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. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] Embodiment

[0043] The embodiment of the present application provides a testing device for the bending pipe of a conveying system. Please refer to Figures 1 to 5 , the testing device 100 for the bending pipe of the conveying system is used to perform a bending test on the to-be-tested bending pipe 200. The testing device for the bending pipe of the conveying system includes a base 10, a positioning unit 20, an angle measuring unit 30, and an adjusting unit 40; the positioning unit 20, the angle measuring unit 30, and the adjusting unit 40 are arranged on the base 10; the positioning unit 20 is used to position the to-be-tested bending pipe 200, and the angle measuring unit 30 is used to measure the bending angle of the bendable part 202 of the to-be-tested bending pipe 200; the adjusting unit 40 is connected to the bendable part 202 of the to-be-tested bending pipe 200 through a traction member, and the adjusting unit 40 is used to drive the traction member to move so as to bend the bendable part 202; wherein, a force measuring assembly 50 is arranged between the adjusting unit 40 and the traction member, and the force measuring assembly 50 is used to obtain the pulling force data of the traction member during the bending process of the bendable part 202 of the to-be-tested bending pipe 200.

[0044] In this solution, the base 10 provides the functions of bearing and installation for the positioning unit 20, the angle measurement unit 30, and the adjustment unit 40. The positioning unit 20 is installed on the base 10 and can position the bendable pipe 200 to be measured, ensuring that the bendable part 202 of the bendable pipe 200 to be measured remains stationary during the bending process by the traction member in the adjustment unit 40, and ensuring the bending accuracy during the bending process of the bendable pipe 200 to be measured. The angle measurement unit 30 can measure the bending angle of the bendable part 202 of the bendable pipe 200 to be measured. Moreover, by providing a force measuring assembly 50 between the adjustment unit 40 and the traction member, the force measuring assembly 50 can obtain the tensile force data of the traction member during the bending process of the bendable part 202 of the bendable pipe 200 to be measured. In this way, the operator can combine the tensile force data during the bending process of the bendable part 202 with the bending angle to obtain the relationship between the bending angle and the bending force value of the bendable pipe 200 to be measured, which is more convenient for evaluating the bending ability of the bendable pipe 200 to be measured and is conducive to the operator better bending the bendable pipe 200 to be measured during the actual bending process.

[0045] Among them, as Figure 2 shown, the bendable pipe 200 to be measured includes a body 201 and a bendable part 202 that bends relative to the body 201. During the bending process of the bendable part 202 of the bendable pipe to be measured, the body 201 remains stationary. The base 10 can have various structures. For example, the base 10 can be a pedestal or a frame structure.

[0046] In this embodiment, as Figure 1 shown, the base 10 is a frame structure. The base 10 can include a test platform 11 and a support frame 12 located below the test platform 11. The positioning unit 20, the angle measurement unit 30, and the adjustment unit 40 are all arranged on the test platform 11. The support frame 12 provides a supporting function for the test platform 11, keeping the test platform 11 at a more appropriate height, which is conducive to the operator performing the bending test on the bendable pipe 200 to be measured.

[0047] The support frame 12 includes a plurality of columns 120 and connecting rods 121 connected between adjacent two columns 120. The bottom of the plurality of columns 120 is provided with moving wheels 122. The setting of the moving wheels 122 facilitates the transfer of the bendable pipe testing device of the conveying system according to the actual situation, with strong flexibility and a wider application range. Of course, the moving wheels 122 can be universal wheels with a locking function.

[0048] In some embodiments, please combine Figure 1 and Figure 2, the adjusting unit 40 includes a first guide rail 41, a first slider 42 and a driving assembly 43. The first guide rail 41 is disposed on the base 10; the first slider 42 is slidably disposed on the first guide rail 41, and the force measuring assembly 50 is disposed on the first slider 42 and connected to the proximal end of the traction member; the driving assembly 43 is used to drive the first slider 42 to slide on the first guide rail 41 so as to drive the traction member to move along the first guide rail 41. By driving the first slider 42 to move on the first guide rail 41 by the driving assembly 43, the first guide rail 41 can play a role in guiding the first slider 42 to move in a fixed direction, thereby driving the traction member to move in a fixed direction, so that the bendable portion 202 of the measured bendable pipe 200 is bent, realizing the bending of the bendable portion 202 of the measured bendable pipe 200, and the operation is convenient and fast.

[0049] Wherein, the traction member can be a traction wire.

[0050] In some embodiments, please refer to Figure 2 and Figure 3 , the force measuring assembly 50 includes a second slider 51 and a force measuring member 52. The second slider 51 is slidably disposed on the first guide rail 41 and is located between the first slider 42 and the positioning unit 20. The second slider 51 is connected to the proximal end of the traction member; the force measuring member 52 is disposed on the first slider 42, and the force measuring end 521 of the force measuring member 52 is connected to the second slider 51. Since the traction member is generally a filamentous structure, it is not convenient for the force measuring end 521 of the force measuring member 52 to be directly connected to the traction member. Therefore, by providing a second slider 51 on the first guide rail 41 and connecting the second slider 51 to the proximal end of the traction member, it is equivalent to connecting the proximal end of the traction member and the second slider 51 as a whole. In this way, compared with the traction member, the second slider 51 has a larger volume, which is more convenient for the force measuring end 521 of the force measuring unit to be stably connected to the second slider 51, ensuring the stability of the tensile force test during the bending of the bendable portion 202 by the traction member.

[0051] Wherein, the proximal end of the traction member refers to the end of the traction member close to the operator. The force measuring member 52 can be a variety of force measuring structures. For example, the force measuring member 52 can be a mechanical sensor or a tensiometer. In this embodiment, the force measuring member 52 is a tensiometer, which has a simple structure, low cost and is easy to purchase. As Figure 3 shown, the tensiometer is installed on the first slider 42. The force measuring end 521 of the tensiometer refers to the hook of the tensiometer, and the hook of the tensiometer is connected to the second slider 51. Of course, in order to facilitate the connection between the force measuring device and the second slider 51, a hanging portion 514 for connecting the force measuring end 521 of the tensiometer can be provided on the second slider 51, and the hook of the tensiometer is in hanging fit with the hanging portion 514 on the second slider 51.

[0052] It should be noted that the tensile force data measured by the force measuring component 52 is greater than the resistance suffered by the traction member when pulling the adjustable bending part 202 to bend. The tensile force data measured by the force measuring component 52 is actually equal to the resistance suffered by the adjustable bending part 202 when bending and the frictional resistance suffered by the second slider 51 during the process. When counting the tensile force data of the force measuring component 52, it is only necessary to subtract the frictional resistance suffered by the second slider 51 during the process. The frictional resistance suffered by the second slider 51 during the process can be obtained through a blank test, that is, the connection between the second slider 51 and the traction member is disconnected, and the first slider 42 is used to pull the second slider 51 to slide, and the tensile force data of this blank test can be obtained.

[0053] In some embodiments, please refer to Figure 2 and Figure 3 , the second slider 51 includes a sliding part 511, a pressing block 512 and a locking screw (not shown in the figure). The sliding part 511 is slidably matched with the first guide rail 41, and the locking screw is threadedly matched with the pressing block 512 for applying a downward pressure to the pressing block 512 so that the pressing block 512 presses tightly on the traction member on the sliding part 511. The sliding fit between the sliding part 511 and the first guide rail 41 realizes the sliding function of the second slider 51 on the first guide rail 41. The threaded fit between the locking screw and the pressing block 512 can provide a pressing force to the pressing block 512. The pressing block 512 presses tightly on the traction member on the sliding part 511, realizing the fixation of the proximal end of the traction member on the second slider 51. Moreover, the setting of the locking screw can adjust the magnitude of the pressing force on the traction member by rotating the locking screw. When it is necessary to remove the traction member, only need to loosen the locking screw, cancel the pressing force of the pressing block 512 on the sliding part 511, and then the traction member can be removed, and the operation is convenient and fast.

[0054] Among them, the locking screw is threadedly matched with the pressing block 512, and one end of the locking screw can be screwed into the threaded hole on the sliding part 511 to realize the locking fit between the pressing block 512 and the sliding part 511. Of course, the number of locking screws can be multiple, and the multiple locking screws are spaced apart on the pressing block 512 and act on the pressing block 512 together. By pressing the pressing block 512 on the traction member on the sliding part 511, the firm connection between the traction member and the second slider 51 is realized.

[0055] In some embodiments, a displacement measuring component (not shown in the figure) is provided on the base 10. The displacement measuring component is used to measure the displacement of the first slider 42 and / or the second slider 51. By providing the displacement measuring component on the base 10, the displacement measuring component can measure the displacement of the first slider 42 and / or the second slider 51, and thus the displacement of the traction member can be obtained. In this way, during the bending test of the to-be-tested bent pipe 200, the operator can evaluate the relationship among the bending force of the to-be-tested bent pipe 200, the moving distance of the traction member, and the bending angle by reading the moving distance of the first slider 42 or the second slider 51, the bending angle of the to-be-tested bent pipe 200, and the peak value of the force measuring component 52, which is more convenient for evaluating the bending ability of the to-be-tested bent pipe 200.

[0056] Among them, the displacement measuring component can be various measuring components. For example, the displacement measuring component can be a displacement sensor or a scale 310 ruler. In this embodiment, the displacement measuring component is a scale 310 ruler, which has a simple structure and low cost. The scale 310 ruler is located on the base 10 and is arranged along the extension direction of the first guide rail 41. During the bending process of the to-be-tested bent pipe 200, the operator can read the moving distance of the first slider 42 or the second slider 51 through the scale 310 ruler. Since the first slider 42 and the second slider 51 move synchronously, only the displacement of the first slider 42 or the second slider 51 needs to be measured to obtain the displacement of the traction member.

[0057] In this embodiment, the displacement measuring component is arranged on one side of the first slider 42 on the base 10 and is used to measure the displacement of the first slider 42.

[0058] In some embodiments, please refer to Figure 2 and Figure 4, the driving assembly 43 includes a mounting base 430, a lead screw 431, a nut seat 432, a guiding portion 433 and a driving member 434. The mounting base 430 is disposed on the base 10. The lead screw 431 is rotatably mounted on the mounting base 430, and the axial direction of the lead screw 431 is arranged in the same direction as the length direction of the first guide rail 41. The nut seat 432 is in threaded engagement with the lead screw 431, and the nut seat 432 is connected to the first slider 42 through a connecting member 44. The guiding portion 433 is disposed on the mounting base 430 and is in sliding engagement with the nut seat 432. The driving member 434 is disposed on the mounting base 430 and is used to drive the lead screw 431 to rotate along its axial direction. By adopting the lead screw 431-nut pair mechanism for the driving assembly 43 and the nut seat 432 being in sliding engagement with the guiding portion 433, the nut seat 432 is prevented from rotating synchronously with the lead screw 431. Under the action of the driving member 434, the lead screw 431 is driven to rotate, and the nut seat 432 can be driven to move along the axial direction of the lead screw 431. Since the nut seat 432 is connected to the first slider 42 through the connecting member 44, the movement of the nut seat 432 can drive the first slider 42 to move on the first guide rail 41, and then the adjustable bending portion 202 of the to-be-tested bent pipe 200 can be subjected to a bending test through the traction member. During the test, the displacement of the traction member changes linearly. Only by controlling the rotation amount of the lead screw 431 can the displacement of the traction member be controlled, and the accuracy of the bending test of the to-be-tested bent pipe 200 is higher.

[0059] However, it is not limited thereto. The driving assembly 43 can also be other driving mechanisms. For example, the driving assembly 43 can also be an electric push rod, a cylinder, a hydraulic cylinder or a synchronous belt driving structure, etc.

[0060] Certainly, the driving member 434 can be of various structures. For example, the driving member 434 can be a driving motor to drive the lead screw 431 to rotate. Or, the driving member 434 can be a rotating handle 4342, and the nut seat 432 can also be driven by manually rotating the rotating handle 4342.

[0061] In addition, the guiding portion 433 can be a slide rail or a guiding rod. In this embodiment, the guiding portion 433 is two guiding rods. The two guiding rods are disposed on the mounting base 430 and on both sides of the lead screw 431. The extending direction of the guiding rods is the same as that of the lead screw 431, and the nut seat 432 is sleeved on the two guiding rods.

[0062] In some embodiments, please refer to Figure 4, the driving member 434 includes a driving box 4341, a bevel gear set (not shown in the figure), and a rotating handle 4342. The bevel gear set is installed in the driving box 4341. The rotating handle 4342 is connected to the lead screw 431 through the bevel gear set. The rotation axis of the rotating handle 4342 is perpendicular to the rotation axis of the lead screw 431. The rotating handle 4342 is used to drive the lead screw 431 to rotate through the bevel gear set. The rotating handle 4342 is connected to the lead screw 431 through the bevel gear set, and the rotation axis of the rotating handle 4342 is perpendicular to the rotation axis of the lead screw 431. In this way, when the operator acts on the rotating handle 4342, only the rotating handle 4342 needs to be acted on in the horizontal plane direction, and it is more convenient and labor-saving to rotate the rotating handle 4342, reducing the requirement for the operator's strength.

[0063] Among them, the bevel gear set includes a first bevel gear and a second bevel gear. The first bevel gear and the second bevel gear mesh with each other. The first bevel gear is rotatably installed in the driving box 4341 and connected to the lead screw 431. The rotation axis of the first bevel gear is coaxial with the lead screw 431. The rotation axis of the second bevel gear is perpendicular to the rotation axis of the first bevel gear. The second bevel gear is rotatably installed in the driving box 4341, and the rotating handle 4342 is connected to the second bevel gear.

[0064] In some embodiments, please combine Figure 2 and Figure 5 , the positioning unit 20 includes a positioning seat 21 and a pressing member 22. The positioning seat 21 is arranged on the base 10. The positioning seat 21 has a positioning groove for the to-be-tested bent pipe 200 to pass through. The pressing member 22 is movably arranged on the positioning seat 21 so that the pressing member 22 can approach or move away from the positioning groove. The pressing member 22 is used to press and position the to-be-tested bent pipe 200 located in the positioning groove. The positioning seat 21 has a positioning groove for the to-be-tested bent pipe 200 to pass through. In this way, the to-be-tested bent pipe 200 passes through the positioning groove. Through the pressing member 22 can approach or move away from the positioning groove, and the pressing member 22 is used to press and position the to-be-tested bent pipe 200 located in the positioning groove, and the positioning stability of the to-be-tested bent pipe 200 is high. When it is necessary to cancel the pressing and positioning of the to-be-tested bent pipe 200, only the pressing member 22 needs to be moved in the direction away from the positioning groove, and the to-be-tested bent pipe 200 can be taken off, and the operation is convenient and fast.

[0065] Among them, the pressing member 22 can be a pressing cylinder. The pressing cylinder is installed on the positioning seat 21, and the driving rod of the pressing cylinder is movably arranged on the positioning seat 21. One end of the driving rod of the pressing cylinder is provided with a pressing portion 220. The driving rod of the pressing cylinder acts on the to-be-tested bent pipe 200 in the positioning groove through the pressing portion 220 to press and position it, and the contact area is larger, reducing the pressure on the to-be-tested bent pipe 200.

[0066] In some embodiments, the number of pressing members 22 is set to be plural, and the plural pressing members 22 are spaced apart along the length direction of the to-be-tested bent pipe 200 on the positioning seat 21. By setting the number of the pressing members 22 to be plural, the plural pressing members 22 cooperate together to be able to perform multi-point pressing and positioning on the to-be-tested bent pipe 200, with high positioning stability for the to-be-tested bent pipe 200, and reducing the risk of displacement of the to-be-tested bent pipe 200 during the bending process.

[0067] In this embodiment, the number of the pressing members 22 is set to be two.

[0068] In some embodiments, please refer to Figure 2 , the positioning unit 20 further includes a support seat 23. The support seat 23 is disposed on the base 10 and is located on one side of the positioning seat 21. The support seat 23 has a limiting hole for providing support and limitation to the to-be-tested bent pipe 200. Since the lengths of the to-be-tested bent pipes 200 are different and the length of the positioning seat 21 is limited, the end portion of the to-be-tested bent pipe 200 extending out of the positioning seat 21 is prone to downward bending under the action of gravity, which will further affect the bending test of the to-be-tested bent pipe 200 by the traction member. By providing the support seat 23 on one side of the positioning seat 21 and setting the limiting hole on the support seat 23, the limiting hole can provide the functions of bearing and limitation to the end portion of the to-be-tested bent pipe 200, can be applicable to the bending tests of the to-be-tested bent pipes 200 with different lengths, has a wider application range, and avoids affecting the accuracy of the force measurement data of the traction member due to the contact or abutment between the traction member and the inner wall of the to-be-tested bent pipe 200 after the end portion of the to-be-tested bent pipe 200 is bent.

[0069] In some embodiments, the number of the support seats 23 is two, and the two support seats 23 are respectively located on both sides of the positioning seat 21 in the length direction. By setting the number of the support seats 23 to be two, the two support seats 23 can respectively provide the functions of bearing and limitation to both ends of the to-be-tested bent pipe 200, ensuring the accuracy of the bending test of the to-be-tested bent pipe 200.

[0070] In some embodiments, the angle measurement unit 30 includes an angle dial 31 and a second guide rail 32. The angle dial 31 is disposed on the base 10. The angle dial 31 has a measurement area for measuring the bending of the adjustable bending portion 202 of the to-be-tested bending pipe 200. A scale 310 is disposed around the outer periphery of the measurement area of the angle dial 31. The second guide rail 32 is disposed on the base 10. The angle dial 31 is slidably disposed on the second guide rail 32. The extending direction of the second guide rail 32 is the same as the extending direction of the first guide rail 41. By providing the angle dial 31, the adjustable bending portion 202 of the to-be-tested bending pipe 200 is located in the measurement area of the angle dial 31. When the adjustable bending portion 202 bends in the plane where the angle dial 31 is located, the bending angle of the adjustable bending portion 202 can be read through the scale 310 in the measurement area. By slidably disposing the angle dial 31 on the second guide rail 32, the distance between the angle dial 31 and the positioning unit 20 can be adjusted, so as to be applicable to the bending tests of the to-be-tested bending pipes 200 with different bending sections, and the applicable range of the testing device is wider.

[0071] Wherein, a locking member is disposed on the angle dial 31. The locking member is used to lock and fix the angle dial 31 and the second guide rail 32. The locking member can be a locking screw. The locking screw is in threaded cooperation with the angle dial 31. One end of the locking screw abuts against the second guide rail 32 to limit the movement of the angle dial 31 and the second guide rail 32. Of course, a plurality of locking grooves can also be disposed on the second guide rail 32, and the locking screw is in locking cooperation with the locking grooves.

[0072] In this solution, the bending test process of the bending pipe testing device 100 is as follows: The to-be-tested bending pipe 200 passes through the support seat 23 and the positioning seat 21. The adjustable bending portion 202 of the to-be-tested bending pipe 200 extends to the position of the angle dial 31. The position of the angle dial 31 is adjusted to align the adjustable bending distance of the to-be-tested bending pipe 200 with the angle dial 31, and then the angle dial 31 is locked. Tighten the locking screw on the second slider 51 to tightly fix the proximal end of the traction member. Turn on the test switch of the tensiometer and perform zero setting.

[0073] Start the switch of the pressing member 22 (pressing cylinder) in the positioning unit 20. The driving rod of the pressing cylinder moves downward to press the to-be-tested bending pipe 200. Shake the rotating handle 4342. The first slider 42 moves backward to drive the second slider 51 and the traction member to move. The adjustable bending portion 202 of the to-be-tested bending pipe 200 bends, and read the moving distance of the first slider 42, the bending angle of the to-be-tested bending pipe 200, and the peak value data of the tensiometer.

[0074] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0075] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A conveying system bending pipe testing device, used for testing the bending of the tested bending pipe, characterized in that: The device comprises a base, a positioning unit, an angle measuring unit and an adjusting unit; the positioning unit, the angle measuring unit and the adjusting unit are arranged on the base; the positioning unit is used to position the bent pipe to be measured and adjusted, and the angle measuring unit is used to measure the bending angle of the adjustable bent portion of the bent pipe to be measured and adjusted; the adjusting unit is connected to the adjustable bent portion of the bent pipe to be measured and adjusted through a traction member, and the adjusting unit is used to drive the traction member to move so as to bend the adjustable bent portion; Wherein, a force measuring component is arranged between the adjusting unit and the traction member, and the force measuring component is used to obtain the tension data of the traction member during the bending process of the adjustable bend of the measured and adjusted bent pipe.

2. The conveying system bending pipe testing device according to claim 1, characterized in that: The adjustment unit comprises: A first guide rail, disposed on the base; A first slider is slidably disposed on the first guide rail, and the force measuring assembly is disposed on the first slider and connected to the proximal end of the traction member; The driving assembly is used to drive the first sliding block to slide on the first guide rail, so as to drive the traction member to move along the first guide rail.

3. The conveying system bending pipe testing device according to claim 2, characterized in that: The force measuring assembly comprises: A second slider is slidably disposed on the first guide rail and is located between the first slider and the positioning unit, and the second slider is connected to the proximal end of the traction member; The force measuring component is arranged on the first sliding block, and the force measuring end of the force measuring component is connected to the second sliding block.

4. The conveying system bending pipe testing device according to claim 3, characterized in that: The second sliding block includes a sliding portion, a pressing block and a locking screw. The sliding portion is slidably matched with the first guide rail, and the locking screw is threadably matched with the pressing block for applying downward pressure to the pressing block so that the pressing block is pressed against the traction member on the sliding portion.

5. The conveying system bending pipe testing device according to claim 3, characterized in that: The base is provided with a displacement measuring component, and the displacement measuring component is used to measure the displacement of the first slider and / or the second slider.

6. The conveying system bending pipe testing device according to claim 2, characterized in that: The drive assembly comprises: A mounting seat, arranged on the base; A lead screw is rotatably mounted on the mounting seat, and the axial direction of the lead screw is arranged in the same direction as the length direction of the first guide rail; A nut seat, matched with the thread of the lead screw, and the nut seat is connected to the first sliding block through a connecting piece; A guide portion, disposed on the mounting seat, wherein the guide portion is slidably matched with the nut seat; A driving member is arranged on the mounting seat, and the driving member is used to drive the lead screw to rotate along its axial direction.

7. The conveying system bending pipe testing device according to claim 6, characterized in that: The driving member includes a driving box, a bevel gear set and a rotating handle, the bevel gear set is installed on the driving box, the rotating handle is connected to the lead screw through the bevel gear set, the rotation axis of the rotating handle is perpendicular to the rotation axis of the lead screw, and the rotating handle is used to drive the lead screw to rotate through the bevel gear set.

8. The conveying system bending pipe testing device according to claim 1, characterized in that: The positioning unit comprises: A positioning seat, arranged on the base, the positioning seat having a positioning groove for the measured and adjusted bent pipe to pass through; The pressing piece is movably arranged on the positioning seat so that the pressing piece can approach or move away from the positioning groove. The pressing piece is used to press and position the tested and adjusted bent pipe located in the positioning groove.

9. The conveying system bending pipe testing device according to claim 8, characterized in that: The number of the pressing members is set to be multiple, and the multiple pressing members are distributed at intervals on the positioning seat along the length direction of the bent pipe to be tested and adjusted.

10. The conveying system bending pipe testing device according to claim 8, characterized in that: The positioning unit also includes: The support seat is arranged on the base and located on one side of the positioning seat. The support seat has a limiting hole for providing support and limiting the bent pipe to be tested and adjusted.

11. The conveying system bending pipe testing device according to claim 10, characterized in that: The number of the supporting seats is two, and the two supporting seats are respectively located on both sides of the positioning seat in the length direction.

12. The conveying system bending pipe testing device according to claim 2, characterized in that: The angle measurement unit comprises: An angle plate is arranged on the base, the angle plate has a measuring area for measuring the bending of the adjustable bend of the measured bend pipe, and the angle plate is provided with scales around the periphery of the measuring area; The second guide rail is arranged on the base, the angle plate is slidably arranged on the second guide rail, and the extension direction of the second guide rail is arranged in the same direction as the extension direction of the first guide rail.

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