Test tool capable of adjusting bending radius of hose
By introducing an adjustable bending radius connecting frame and support rod structure into the hose testing fixture, the problem of insufficient bending radius range of the existing testing fixture is solved, enabling more comprehensive hose performance testing, expanding the testing range and improving testing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
The existing hose testing fixtures have a limited range of bending radius testing capabilities, which cannot meet the complex requirements for hose bending performance in actual production.
Design a test fixture with adjustable hose bending radius. By adding a connecting frame and support rod to the reciprocating mechanism, the bending radius test range is expanded. The fixture includes a test platform, a connecting frame, and a reciprocating mechanism. A power component drives the support plate to move and change the hose bending radius. The performance is monitored by combining temperature and pressure transmitters.
This allows for a more comprehensive assessment of hose bending performance, expanding the bending radius test range from 2m-5.5m to 0.6m-5.5m, meeting the performance requirements of actual production, and improving the accuracy and reliability of test results.
Smart Images
Figure CN223985964U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of hose performance test development especially relates to a test tool that hose bending radius is adjustable. BACKGROUND
[0002] The LNG hose filling system is a kind of equipment specially used for liquefied natural gas (LNG) fuel filling, which allows LNG to be safely and efficiently transferred from storage facilities to fuel storage tanks, and can be flexibly applied to different filling scenarios.
[0003] The LNG delivery hose is the core component of the LNG hose filling system, and its various performance indicators need to meet the use requirements of complex working conditions, and the bending performance has an important influence on the safety and reliability of the LNG hose filling system. The bending radius of the LNG delivery hose varies greatly in actual use conditions, and the existing hose test tool bending radius test range is mostly 2m-5.5m, which gradually cannot meet the requirements of the hose bending performance in actual production operation, and at present, a hose bending radius test tool capable of more comprehensively investigating the bending performance of the hose is urgently needed. UTILITY MODEL CONTENT
[0004] Based on the above, the utility model aims to provide a test tool that the bending radius of hose is adjustable, which expands the bending radius test range of the hose to be measured by adding a connecting frame to the reciprocating mechanism.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A test tool that the bending radius of hose is adjustable, characterized in that it comprises a test platform, two groups of connecting frames and two groups of reciprocating mechanisms, the two groups of reciprocating mechanisms are oppositely arranged and respectively move along a first direction;
[0007] Each group of reciprocating mechanisms comprises a support plate and a hose connecting assembly, the hose connecting assembly is arranged on the support plate, and the two ends of the hose to be measured are respectively detachably connected to the two hose connecting assemblies of the two groups of reciprocating mechanisms, and the two groups of connecting frames are respectively added to the two support plates;
[0008] Any group of connecting frames comprises a first connecting frame body and a second connecting frame body, the first connecting frame body and the second connecting frame body are detachably connected, and each support plate is clamped between the first connecting frame body and the second connecting frame body; The opposite ends of the two groups of connecting frames are movably provided with support rods, and the hose to be measured is overlapped on the support rods.
[0009] As a preferred scheme of a test tool that the bending radius of hose is adjustable, the support plate is slidably arranged on the test platform and moves along the first direction.
[0010] As a preferred scheme of the test tool for adjusting the bending radius of the hose, any one of the back-and-forth mechanisms further comprises a power component connected with the support plate to drive the support plate to move in the first direction.
[0011] As a preferred scheme of the test tool for adjusting the bending radius of the hose, the power component is a driving motor, and any one of the back-and-forth mechanisms further comprises a transmission component comprising a belt and two lead screws, the two lead screws are arranged on two sides of the test platform, the length direction of the two lead screws extends along the first direction, any one of the lead screws is provided with a connecting block, and the two ends of the support plate are fixedly connected with the two connecting blocks respectively, and the belt is transmissionally connected with the driving end of the driving motor and the two lead screws.
[0012] As a preferred scheme of the test tool for adjusting the bending radius of the hose, the hose connecting assembly comprises a support column and a valve, the support column is fixed on the support plate, and the valve is fixed on the support column and detachably connected with the hose to be tested.
[0013] As a preferred scheme of the test tool for adjusting the bending radius of the hose, the valve and the hose to be tested are detachably connected through a connecting piece.
[0014] As a preferred scheme of the test tool for adjusting the bending radius of the hose, one or both of the valves are provided with a temperature transmitter and a pressure transmitter.
[0015] As a preferred scheme of the test tool for adjusting the bending radius of the hose, the test tool further comprises an industrial computer, the industrial computer is used for controlling the start-stop, forward rotation and reverse rotation of the driving motor, and receives and displays the temperature signal and the pressure signal transmitted by the temperature transmitter and the pressure transmitter.
[0016] As a preferred scheme of the test tool for adjusting the bending radius of the hose, the opposite ends of the two groups of connecting frames are uniformly provided with a plurality of screw holes, and the support rods are detachably connected with any one of the screw holes through bolts.
[0017] As a preferred scheme of the test tool for adjusting the bending radius of the hose, any one of the first connecting frame bodies is further provided with a reinforcing frame.
[0018] The test tool has the following beneficial effects: the connecting frame is additionally arranged on the back-and-forth mechanism, the support rod is movably arranged on the connecting frame, the lapping angle of the hose to be tested lapped on the support rod is changed, the bending radius test range of the hose to be tested is expanded, and the bending performance of the hose to be tested is more comprehensively investigated, so as to meet the further requirements for the performance of the hose in actual production operation. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the contents of the embodiments of the present application and the drawings without any creative labor.
[0020] Fig. 1 is a structural schematic view of a test tool with adjustable bending radius of hose provided by the present application;
[0021] Fig. 2 is a structural schematic view of a first connecting frame of a test tool with adjustable bending radius of hose provided by the present application;
[0022] Fig. 3 is a structural schematic view of a second connecting frame of a test tool with adjustable bending radius of hose provided by the present application.
[0023] Reference signs:
[0024] 100-test platform; 110-support seat; 200-connecting frame; 210-first connecting frame body; 211-strengthening frame; 220-second connecting frame body; 230-supporting rod; 240-connecting screw hole; 250-supporting screw hole; 300-shuttle mechanism; 310-supporting plate; 320-hose connecting assembly; 321-supporting column; 322-valve; 330-power component; 340-transmission component; 341-belt; 342-screw rod; 343-connecting block; 400-hose to be tested; 410-test part. DETAILED DESCRIPTION
[0025] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all the structures.
[0026] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning.
[0029] This embodiment provides a test fixture with an adjustable bending radius for flexible hoses, such as... Figs. 1-3 As shown, the test fixture includes a test platform 100, two sets of connecting frames 200, and two sets of reciprocating mechanisms 300. The two sets of reciprocating mechanisms 300 are arranged opposite to each other on the test platform 100 and can move along a first direction, which is the length direction of the test platform 100. Fig. 1 As shown in Figure A), a connecting frame 200 is added to each set of reciprocating mechanisms 300. The two sets of reciprocating mechanisms 300 are respectively connected to the two ends of the hose 400 to be tested. The two ends of the hose 400 to be tested are also overlapped on the connecting frame 200. The two sets of reciprocating mechanisms 300 realize the bending test of the hose 400 to be tested through linear reciprocating motion. The two ends of the hose 400 to be tested overlap on the connecting frame 200 to increase the bending radius, thereby increasing the bending radius test range of the test part 410 on the hose 400 to be tested, and thus realizing a more comprehensive assessment of the hose bending performance.
[0030] Furthermore, each reciprocating mechanism 300 includes a support plate 310 and a hose connection assembly 320. The test platform 100 includes two crossbeams 110 extending along a first direction. The two ends of the support plate 310 are slidably mounted on the two crossbeams 110. For example, the support plate 310 and the crossbeams 110 are slidably engaged by a groove and a slider. The hose connection assembly 320 is mounted on the support plate 310, and the two ends of the hose under test 400 are detachably connected to the two hose connection assemblies 320 of the two reciprocating mechanisms 300, respectively. When the support plate 310 slides along the first direction on the crossbeams 110, it drives the two ends of the hose under test 400 to move along the first direction, thereby changing the bending radius of the test portion 410 on the hose under test 400 to complete the hose bending radius test.
[0031] Specifically, each set of hose connection assemblies 320 includes a support column 321 and a valve 322. The support column 321 is fixed on the support plate 310, and the valve 322 is fixed on the support column 321. The valve 322 and the hose under test 400 are detachably connected through a connector. The valve 322 is used to connect the hose under test 400 and the reciprocating mechanism 300, and also to introduce test fluid into the hose under test 400 during the hose bending test and to release the test fluid after the test, thereby simulating the actual working state of the hose.
[0032] Preferably, one or two valves 322 are equipped with temperature transmitters and pressure transmitters, which are used to receive and transmit temperature and pressure signals inside the hose under test 400 during the hose bending radius test, respectively, to confirm whether the temperature and pressure inside the hose under test 400 meet the test requirements. In practical applications, temperature transmitters and pressure transmitters are generally installed in valves 322 that serve as the test fluid outlet, as the temperature and pressure signals received at the outlet are more accurate.
[0033] Furthermore, each reciprocating mechanism 300 also includes a power component 330 and a transmission component 340. The power component 330 drives the connected support plate 310 through the transmission component 340, thereby driving the support plate 310 to move along a first direction. This, in turn, causes both ends of the hose under test 400 to move along the first direction, thereby changing the bending radius of the test portion 410 on the hose under test 400, thus completing the bending test. Through the cooperation of the power component 330 and the transmission component 340, the movement of the reciprocating mechanism 300 can be made smoother and more accurate, which is beneficial to improving the accuracy of the hose bending test results.
[0034] Specifically, the power component 330 is a drive motor, and two support seats 120 are respectively provided at both ends of the test platform 100, with the two drive motors respectively mounted on the two support seats 120. The support seats 120 provide a platform for the drive motor to operate smoothly, so as to ensure that the drive end of the drive motor drives the support plate 310 and the hose under test 400 to move in the first direction through the transmission component 340, thereby completing the hose bending test.
[0035] More specifically, each set of transmission components 340 also includes a belt 341, two lead screws 342, and two connecting blocks 343. The two lead screws 342 are arranged on both sides of the test platform 100, and their length direction extends along the first direction. Each lead screw 342 is provided with a connecting block 343. The two ends of the support plate 310 are fixedly connected to the two connecting blocks 343 respectively. The belt 341 drives the drive end of the drive motor and the two lead screws 342. The drive end of the drive motor drives the two lead screws 342 to rotate through the belt 341. The two connecting blocks 343 on the two lead screws 342 drive the support plate 310 to perform linear reciprocating motion along the first direction. The two lead screws 342 and the two connecting blocks 343 cooperate to convert the rotational motion of the drive end of the drive motor into linear motion of the support plate 310 and the hose 400 under test along the first direction, thereby completing the hose bending test.
[0036] Furthermore, two sets of connecting frames 200 are respectively mounted on two support plates 310. Each set of connecting frames 200 includes a first connecting frame body 210 and a second connecting frame body 220, which are detachably connected. Each support plate 310 is sandwiched between a first connecting frame body 210 and a second connecting frame body 220. Support rods 230 are movably mounted at opposite ends of both sets of connecting frames 200. The position of the support rods 230 is adjustable along a first direction, and the hose 400 to be tested overlaps the support rods 230. By changing the position of the support rods 230 on the connecting frames 200, the bending radius at both ends of the hose 400 to be tested is changed. Due to the action of the support rods 230, the bending radius at both ends of the hose 400 to be tested increases, thereby increasing the bending radius of the test portion of the hose 400 and expanding the testing range of the hose bending radius.
[0037] In this embodiment, each first connecting frame 210 and the corresponding second connecting frame 220 are provided with multiple connecting screw holes 240 at corresponding positions. The first connecting frame 210 is located above the support plate 310, and the second connecting frame 220 is located below the support plate 310. The first connecting frame 210 and the second connecting frame 220 are clamped to the support plate 310 by bolts and connecting screw holes 240 and are detachably connected, so as to realize the flexible installation and disassembly of the connecting frame 200 and the reciprocating mechanism 300 according to the actual test requirements.
[0038] Preferably, each set of connecting frames 200 is also evenly distributed with multiple sets of support screw holes 250 along the first direction. In this embodiment, the support rod 230 and multiple sets of support screw holes 250 are set on the first connecting frame body 210. The support rod 230 is detachably connected to any set of support screw holes 250 by bolts. The hose 400 to be tested overlaps on the support rod 230. By changing the connection position of the support rod 230 and the connecting frame 200 through different sets of support screw holes 250, the bending radius of the hose 400 to be tested overlapping on the support rod 230 is adjusted, thereby changing the bending radius test range of the hose 400 to be tested in the bending test.
[0039] Specifically, each first connecting frame 210 is also provided with a reinforcing frame 211. The reinforcing frame 211 is used to prevent the first connecting frame 210 from tipping forward due to the weight of the hose 400 itself when it is attached to the support rod 230.
[0040] The adjustable bending radius test fixture provided in this embodiment expands the radius test range in the hose bending test from 2m-5.5m to 0.6m-5.5m by adding a connecting frame 200 to the reciprocating mechanism 300.
[0041] In this embodiment, the aforementioned test fixture also includes an industrial control computer, which is used to control the start, stop, forward and reverse rotation of the drive motor, thereby driving the reciprocating mechanism 300 to move forward and backward along the first direction. The two drive motors can be controlled independently. The industrial control computer is also used to receive and display the temperature and pressure signals transmitted by the temperature transmitter and pressure transmitter. By displaying the temperature and pressure of the test fluid in real time, it monitors whether the temperature of the test fluid meets the standard during the low-temperature test and whether the test hose 400 reaches the maximum working pressure in various tests.
[0042] In practical applications, this embodiment is used to complete room temperature bending tests, low temperature bending tests, and bending fatigue tests. The specific steps of the three tests are described below.
[0043] 1. Room temperature bending test
[0044] S101: The first connecting frame 210 and the second connecting frame 220 are clamped and fixed to the support plate 310 on the reciprocating mechanism 300 by bolts and connecting screw holes 240;
[0045] S102: According to the bending radius requirement of the bending test, the support rod 230 is passed through the designated support screw hole 250 on the first connecting frame 210, and the two ends of the support rod 230 are fixed by bolts;
[0046] S103: The industrial control computer controls the drive motor to rotate forward. The drive motor drives the reciprocating mechanism 300 and the connecting frame 200 to bend the test hose 400 to the specified bending radius, and fills the test hose 400 with room temperature nitrogen through valve 322 so that the internal pressure of the test hose 400 reaches the maximum working pressure.
[0047] S104: After the pressure transmitter shows that the hose under test 400 has maintained the maximum working pressure for 15 minutes, it releases pressure from another valve 322 and controls the drive motor to reverse through the industrial control computer, so as to restore the reciprocating mechanism 300 and the hose under test 400 to the initial state.
[0048] S105: Record the bending condition and surface wear of the middle section of the tested hose 400.
[0049] 2. Low-temperature bending test
[0050] S201: The first connecting frame 210 and the second connecting frame 220 are clamped and fixed to the support plate 310 on the reciprocating mechanism 300 by bolts and connecting screw holes 240;
[0051] S202: According to the bending radius requirement of the bending test, the support rod 230 is passed through the designated support screw hole 250 on the first connecting frame 210, and the two ends of the support rod 230 are fixed by bolts.
[0052] S203: The industrial control computer controls the drive motor to rotate forward. The drive motor drives the reciprocating mechanism 300 and the connecting frame 200 to bend the test hose 400 to the specified bending radius, and fills it with cryogenic liquid nitrogen through valve 322. When the temperature transmitter reading reaches below -160℃, control valve 322 to make the internal pressure of the test hose 400 reach the maximum working pressure.
[0053] S204: After the pressure transmitter shows that the hose under test 400 has maintained the maximum working pressure for 15 minutes, it releases pressure from another valve 322 and controls the drive motor to reverse through the industrial control computer, so as to restore the reciprocating mechanism 300 and the hose under test 400 to the initial state.
[0054] S205: Record the bending condition and surface wear of the middle section of the tested hose 400.
[0055] 3. Bending fatigue test
[0056] S301: The first connecting frame 210 and the second connecting frame 220 are clamped and fixed to the support plate 310 on the reciprocating mechanism 300 by bolts and connecting screw holes 240;
[0057] S302: According to the bending radius requirement of the bending test, the support rod 230 is passed through the designated support screw hole 250 on the first connecting frame 210, and the two ends of the support rod 230 are fixed by bolts.
[0058] S303: The industrial control computer controls the drive motor to rotate forward. The drive motor drives the reciprocating mechanism 300 and the connecting frame 200 to bend the test hose 400 to the specified bending radius, and fills it with cryogenic liquid nitrogen through valve 322. When the temperature transmitter reading reaches below -160℃, control valve 322 to make the internal pressure of the test hose 400 reach the maximum working pressure.
[0059] S304: Repeatedly change the connection position between the support rod 230 and the first connecting frame 210 to change the bending radius of the hose 400 under test. After reaching the total number of fatigue cycles required by the test, release the pressure from another valve 322 and control the drive motor to reverse through the industrial control computer to restore the reciprocating mechanism 300 and the hose 400 under test to the initial state.
[0060] S205: Record the surface wear of the hose 400 under test.
[0061] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.
[0062] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. A test tool for hoses with adjustable bending radius, characterized in that The test platform, two sets of connecting frames and two sets of back-and-forth mechanisms are included. Each set of the back-and-forth mechanisms includes a support plate and a hose connecting assembly, the hose connecting assembly is arranged on the support plate, two ends of the hose to be tested are respectively detachably connected to two hose connecting assemblies of the two sets of back-and-forth mechanisms, and two sets of connecting frames are respectively installed on two support plates. Each set of the connecting frames includes a first connecting frame body and a second connecting frame body, the first connecting frame body and the second connecting frame body are detachably connected, and each support plate is clamped between the first connecting frame body and the second connecting frame body.
2. The hose bend radius adjustable test fixture of claim 1, wherein, The support plate is slidably arranged on the test platform and moves along the first direction.
3. The hose bend radius adjustable test fixture of claim 2, wherein, Each set of the back-and-forth mechanisms further includes a power component, the power component is drivingly connected to the support plate to drive the support plate to move along the first direction.
4. The hose bend radius adjustable test fixture of claim 3, wherein, The power component is a driving motor, and each set of the back-and-forth mechanisms further includes a transmission component, the transmission component includes a belt, two lead screws and two connecting blocks, the two lead screws are arranged on two sides of the test platform, the length direction of the two lead screws extends along the first direction, one connecting block is arranged on any one of the lead screws, and two ends of the support plate are fixedly connected to the two connecting blocks.
5. The hose bend radius adjustable test fixture of claim 4, wherein, Each set of the hose connecting assembly includes a support column and a valve, the support column is fixed on the support plate, and the valve is fixed on the support column.
6. The hose bend radius adjustable test fixture of claim 5, wherein, The valve and the hose to be tested are detachably connected through a connecting piece.
7. The hose bend radius adjustable test fixture of claim 5, wherein, One or both of the valves are provided with a temperature transmitter and a pressure transmitter.
8. The hose bend radius adjustable test fixture of claim 7, wherein, Further including an industrial computer, the industrial computer is used for controlling start, stop, forward rotation and reverse rotation of the driving motor, and is also used for receiving and displaying temperature signals and pressure signals transmitted by the temperature transmitter and the pressure transmitter.
9. The hose bend radius adjustable test fixture of claim 1, wherein, A plurality of support screw holes are uniformly distributed on each set of the connecting frames along the first direction, and the support rod is detachably connected to any one of the support screw holes through a bolt.
10. The hose bend radius adjustable test fixture of claim 1, wherein, Each first connecting frame body is further provided with a reinforcing frame.