Tensile and anti-cutting testing device for expansion rubber pipe

Abstract

The invention discloses an expansion rubber tube tensile and anti-cutting test device, which comprises a test frame, an air supply assembly, a pneumatic expansion measurement assembly, a temperature control adjustment assembly, a tensile detection assembly and a cutting detection assembly, and is characterized in that the test frame is provided with a thermal insulation frame, and extends along a first direction; the air supply assembly and the pneumatic expansion measuring assembly are arranged on the heat preservation frame, the air supply assembly is communicated with the pneumatic expansion measuring assembly, and the two temperature control adjusting assemblies are arranged on the heat preservation frame and communicated with the air supply assembly. The stretching detection assembly is located at the first end of the testing frame and used for carrying out stretching detection on the expansion rubber pipe, and the cutting detection assembly is located at the second end of the testing frame and used for carrying out cutting detection on the expansion rubber pipe. The tensile and anti-cutting testing device for the expansion rubber pipe has the advantages of being comprehensive in performance testing and capable of simulating a real use environment.

Description

Technical Field

[0001] The invention relates to the technical field of hose testing, and in particular to a tensile and anti-cutting testing device for an expansion hose. Background Art

[0002] Expansion hose, also called air-inflated shaft expansion hose, is a pipe material with expandable characteristics. In the actual application process, different requirements need to be selected for the production materials of expansion hoses according to different fields of use. After the expansion hose is produced, it is often necessary to perform performance tests on the expansion hose. When related technologies perform performance tests on expansion hoses, most of them can only perform a single performance test on expansion hoses of different materials. Moreover, the test environment is mostly in a conventional indoor environment, and it is difficult to perform targeted tests according to the use environment of the expansion hose. The test results often have certain errors from the actual use environment. Summary of the invention

[0003] The present invention is based on the inventor's discovery and understanding of the following facts and problems: the test environment does not match the actual use environment. The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention proposes an expansion hose tensile and anti-cutting test device, which has the advantages of comprehensive performance testing and simulation of the actual use environment.

[0004] According to the expansion hose tensile and cut resistance testing device of the embodiment of the present invention, the expansion hose tensile and cut resistance testing device includes a testing frame, an air supply component, a pneumatic expansion measurement component, a temperature control and adjustment component, a stretching detection component and a cutting detection component. An insulation frame is provided on the testing frame, and the testing frame extends along a first direction. The air supply component and the pneumatic expansion measurement component are arranged on the insulation frame, and the air supply component is communicated with the pneumatic expansion measurement component. The two temperature control and adjustment components are arranged on the insulation frame and communicated with the air supply component. The stretching detection component is located at the first end of the testing frame to perform stretching detection on the expansion hose, and the cutting detection component is located at the second end of the testing frame to perform cutting detection on the expansion hose.

[0005] The expansion hose tensile and cut resistance testing device according to the embodiment of the present invention has the advantages of comprehensive performance testing and simulation of the actual use environment.

[0006] In some embodiments, the air supply assembly includes an air supply rack, an air supply tank and an air supply pump. The air supply rack is arranged on the insulation frame, and the air supply tank and the air supply pump are arranged on the air supply rack. An air relief valve is installed on the air supply tank. The air supply end of the air supply pump is connected to the air supply tank through an air supply pipe. An air supply valve is installed on the air supply pipe. The air supply tank is connected to the pneumatic expansion measurement assembly.

[0007] In some embodiments, the pneumatic expansion measuring assembly includes an annular expansion measuring part, an air supply pipe, a pressure relief pipe and a pressure relief valve. A plurality of the annular expansion measuring parts are arranged on the insulation frame at equal distances along the first direction. Any two adjacent annular expansion measuring parts are connected through a ventilation pipe. The two ends of the air supply pipe are respectively connected to the air supply tank and any of the ventilation pipes. An air supply valve is installed on the air supply pipe. The pressure relief pipe is connected to the ventilation pipe to relieve pressure on the annular expansion measuring part.

[0008] In some embodiments, the annular expansion measuring part includes an annular expansion measuring box and an expansion measuring head group, the annular expansion measuring box is connected to the insulation frame, the expansion measuring head group is located in the annular expansion measuring box and is evenly distributed in the circumferential direction of the expansion hose, the expansion measuring head group includes an expansion measuring slide, a first expansion measuring spring, an expansion measuring slide rod, a second expansion measuring spring, an expansion measuring pressure sensor and an expansion measuring extrusion head, at least part of the expansion measuring slide is located in the annular expansion measuring box and is slidably connected to the annular expansion measuring box, the first expansion measuring spring connects the expansion measuring slide to the annular expansion measuring box, at least part of the expansion measuring slide rod is located in the expansion measuring slide rod and is slidably connected to the expansion measuring slide rod, the second expansion measuring spring connects the expansion measuring slide rod to the annular expansion measuring box, the expansion measuring pressure sensor and the expansion measuring extrusion head are sequentially connected to the expansion measuring slide rod.

[0009] In some embodiments, the temperature control and adjustment component includes a vortex tube, a cold air main pipe, a cold air follower pipe, a hot air main pipe and a hot air follower pipe;

[0010] The vortex tube is installed on the side of the test frame, the vortex tube is connected to the air supply tank, the cold air main pipe is arranged on the side of the heat preservation frame, the cold air main pipe is connected to the cold air delivery end of the vortex tube, one end of a plurality of cold air slave pipes is connected to the cold air main pipe, the other end of the cold air slave pipe is connected to a cold air nozzle, the cold air nozzle is connected to the heat preservation frame and the plurality of cold air nozzles form a cold test area in the heat preservation frame;

[0011] The hot gas main pipe is arranged on one side of the insulation frame, the hot gas main pipe is connected to the hot gas delivery end of the vortex tube, one end of the multiple hot gas slave pipes is connected to the hot gas main pipe, the other end of the hot gas slave pipe is connected to the hot gas nozzle, the hot gas nozzle is connected to the insulation frame, and the multiple hot gas nozzles form a thermal testing area in the insulation frame.

[0012] In some embodiments, the cold air main pipe and the hot air main pipe of the temperature control and adjustment component are respectively located on two sides of the vortex tube.

[0013] In some embodiments, the stretching detection assembly includes a dynamic positioning part and a static positioning part, each of the dynamic positioning part and the static positioning part includes a positioning slider, a tension sensor, a tension frame, a sealing tube core and a positioning electric cylinder, the tension sensor is arranged on the positioning slider, the tension frame is connected to the positioning slider, the sealing tube core is detachably connected to the tension frame, the positioning electric cylinder is connected to the tension frame and the output end of the positioning electric cylinder is connected to the positioning sealing block through the tension frame, the positioning sealing block is used to seal the expansion hose on the sealing tube core, the positioning slider of the static positioning part is connected to the test frame, and the dynamic positioning part is slidably connected to the test frame through the stretching power part.

[0014] In some embodiments, the stretching power unit includes a power screw, a power ball nut group and a power motor, the power motor is connected to the side of the test frame, the output end of the power motor is connected to one end of the power screw, the power ball nut group is located on the power screw and is threadedly connected to the power screw, and the power ball nut group is pivotally connected to the positioning slider.

[0015] In some embodiments, the cutting detection component includes a cutting electric cylinder, a cutting pressure sensor, a cutting adjustment frame, a cutting limit rod, a cutting lead screw, a cutting ball nut group, a cutting motor and a cutting knife seat. The cutting electric cylinder is connected to the test frame, the cutting sensor is located on the output end of the cutting electric cylinder and abuts against the cutting adjustment frame to detect pressure, a plurality of the cutting limit rods are arranged on the cutting adjustment frame and are slidably connected to the test frame, the cutting motor is located at one end of the cutting adjustment frame and is transmission-connected to one end of the cutting lead screw, the cutting knife seat is located in the cutting adjustment frame and is connected to the cutting ball nut group, and a scratch cutting knife is provided on the cutting knife seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic diagram of the structure of a tensile and cut resistant testing device for an expansion hose according to an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the partial cross-sectional structure of a device for testing the tensile and cut resistance of an expansion hose according to an embodiment of the present invention.

[0018] Figure 3 yes Figure 2 A local enlarged schematic diagram of point A.

[0019] Figure 4 yes Figure 2 A local enlarged schematic diagram of point B.

[0020] Figure 5 yes Figure 2 A local enlarged schematic diagram of point C.

[0021] Figure 6 yes Figure 2 A local enlarged schematic diagram of point D.

[0022] Figure 7 1 is a schematic diagram of the structure of a pneumatic expansion measuring assembly of an expansion hose tensile and cut resistance testing device according to an embodiment of the present invention.

[0023] Figure 8 yes Figure 7 A local enlarged schematic diagram of point E.

[0024] Fig. 9 yes Figure 7 A local enlarged schematic diagram of point F.

[0025] Fig.10 1 is a schematic structural diagram of a temperature control and adjustment component of an expansion hose tensile and cut resistance testing device according to an embodiment of the present invention.

[0026] Fig.11 1 is a schematic structural diagram of a dynamic positioning portion of an expansion hose tensile and cut resistance testing device according to an embodiment of the present invention.

[0027] Fig.12 1 is a schematic diagram of the structure of a cutting detection component of an expansion hose tensile and cut resistance testing device according to an embodiment of the present invention.

[0028] Fig.13 yes Fig.12 A local enlarged schematic diagram of point G.

[0029] Fig.14 1 is a schematic structural diagram of an air supply assembly of an expansion hose tensile and cut resistance testing device according to an embodiment of the present invention.

[0030] Fig.15 yes Fig.14 A local enlarged schematic diagram of point H.

[0031] : 001, air supply assembly; 002, pneumatic expansion measurement assembly; 003, temperature control adjustment assembly; 004, stretch detection assembly; 005, tear detection assembly; 1, test frame; 2, insulation frame; 3, air supply rack; 4, air supply tank; 5, air relief valve; 6, air supply pump; 7, air supply pipe; 8, air supply valve; 9, ventilation pipe; 10, air supply pipe; 11, air supply valve; 12, pressure relief pipe; 13, pressure relief valve; 14, annular expansion measurement box; 15, expansion measurement slide; 16, first expansion measurement spring; 17, expansion measurement slide rod; 18, second expansion measurement spring; 19, expansion measurement pressure sensor; 20, expansion measurement extrusion head; 21, vortex tube; 22, cold air main pipe; 2 3. Cold air from the pipe; 24. Cold air nozzle; 25. Hot air main pipe; 26. Hot air from the pipe; 27. Hot air nozzle; 28. Air pressure sensor; 29. ​​Charging pipe; 30. Charging valve; 31. Positioning slider; 32. Tension sensor; 33. Tension frame; 34. Sealing tube core; 35. Positioning electric cylinder; 36. Positioning sealing block; 37. Power screw rod; 38. Power ball nut group; 39. Power motor; 40. Cutting electric cylinder; 41. Isolation pressure sensor; 42. Cutting adjustment frame; 43. Cutting limit rod; 44. Cutting screw rod; 45. Cutting ball nut group; 46. Cutting motor; 47. Cutting knife seat; 48. Scratching cutting knife. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] According to the expansion hose tensile and cut resistance testing device of the embodiment of the present invention, the expansion hose tensile and cut resistance testing device includes a test frame 1, an air supply component 001, a pneumatic expansion measurement component 002, a temperature control and adjustment component 003, a stretching detection component 004 and a cut detection component 005. An insulation frame 2 is provided on the test frame 1, and the test frame 1 extends along a first direction. The air supply component 001 and the pneumatic expansion measurement component 002 are arranged on the insulation frame 2, and the air supply component 001 is connected to the pneumatic expansion measurement component 002. Two temperature control and adjustment components 003 are arranged on the insulation frame 2 and connected to the air supply component 001. The stretching detection component 004 is located at the first end of the test frame 1 for performing a stretching test on the expansion hose, and the cut detection component 005 is located at the second end of the test frame 1 for performing a cut detection on the expansion hose. The air supply component 001 and the pneumatic expansion measuring component 002 can cooperate to expand the expansion hose, which is convenient for performance testing. The temperature control adjustment component 003 can assist in simulating the ambient temperature of use. The tensile detection component 004 can cooperate to measure the tensile performance of the expansion hose. The crack detection component 005 can measure the anti-crack performance of the expansion hose.

[0034] The expansion hose tensile and cut resistance testing device according to the embodiment of the present invention has the advantages of comprehensive performance testing and simulation of the actual use environment.

[0035] In some embodiments, the air supply component 001 includes an air supply rack 3, an air supply tank 4 and an air supply pump 6. The air supply rack 3 is arranged on the insulation frame 2, and the air supply tank 4 and the air supply pump 6 are arranged on the air supply rack 3. The air supply tank 4 is equipped with an air relief valve 5. The air supply end of the air supply pump 6 is connected to the air supply tank 4 through the air supply pipe 7. The air supply pipe 7 is equipped with an air supply valve 8. The air supply tank 4 is connected to the pneumatic expansion measurement component 002.

[0036] Specifically, the air supply pump 6 is used to supply gas to the air supply tank 4, and the air relief valve 5 on the air supply tank 4 can accurately control the air pressure in the tank to ensure the stability of the gas pressure during the test. The design of the air supply valve 8 and the air supply pump 6 can achieve rapid filling and deflation, improving the test efficiency. The air supply assembly 001 enables the test device to provide stable and adjustable air pressure, perform effective expansion tests on the expansion hose, and ensure the accuracy of the test results.

[0037] In some embodiments, the pneumatic expansion measuring assembly 002 includes an annular expansion measuring part, an air supply pipe 10, a pressure relief pipe 12 and a pressure relief valve 13. Multiple annular expansion measuring parts are arranged at equal distances on the insulation frame 2 along the first direction. Any two adjacent annular expansion measuring parts are connected through the ventilation pipe 9. The two ends of the air supply pipe 10 are respectively connected to the air supply tank 4 and any ventilation pipe 9. An air supply valve 11 is installed on the air supply pipe 10. The pressure relief pipe 12 is connected to the ventilation pipe 9 to relieve pressure on the annular expansion measuring part.

[0038] Specifically, the arrangement of the annular expansion measuring part can ensure that the expansion hose is evenly stressed in its own extension direction and can measure the deformation of the expansion hose at different positions. The design of the pressure relief pipe 12 can quickly reduce the pressure in the expansion measuring box to ensure the safety of the test. The pneumatic expansion measuring component 002 can fully detect the expansion of the expansion hose in actual use, accurately measure the expansion degree through the expansion measuring pressure sensor 19, and evaluate the performance of the expansion hose. The ventilation pipe 9 connects multiple annular expansion measuring parts. The ventilation pipe 9 extends along the first direction. One end of the air supply pipe 10 is connected to the air supply tank 4. The other end of the air supply pipe 10 can be connected to any ventilation pipe 9 to complete the ventilation of the annular expansion measuring part. The air supply valve 11 is used to control the air supply flow rate, and the pressure relief pipe 12 is used to protect the annular expansion measuring part.

[0039] In some embodiments, the annular expansion measuring part includes an annular expansion measuring box 14 and an expansion measuring head group. The annular expansion measuring box 14 is connected to the insulation frame 2. The expansion measuring head group is located in the annular expansion measuring box 14 and is evenly distributed in the circumferential direction of the expansion hose. The expansion measuring head group includes an expansion measuring slide 15, a first expansion measuring spring 16, an expansion measuring slide rod 17, a second expansion measuring spring 18, an expansion measuring pressure sensor 19 and an expansion measuring extrusion head 20. At least part of the expansion measuring slide 15 is located in the annular expansion measuring box 14 and is slidably connected to the annular expansion measuring box 14. The first expansion measuring spring 16 connects the expansion measuring slide 15 to the annular expansion measuring box 14. At least part of the expansion measuring slide rod 17 is located in the expansion measuring slide 15 and is slidably connected to the expansion measuring slide 15. The second expansion measuring spring 18 connects the expansion measuring slide rod 17 to the annular expansion measuring box 14. The expansion measuring pressure sensor 19 and the expansion measuring extrusion head 20 are sequentially connected to the expansion measuring slide rod 17.

[0040] Specifically, the annular expansion measuring box 14 can change the internal pressure of the box after being filled with gas. As the gas filling increases, the expansion measuring slide 15 and the expansion measuring slide rod 17 move toward the expansion hose so that the expansion measuring extrusion head 20 at the end of the expansion measuring slide rod 17 contacts the surface of the expansion hose. After the expansion hose is inflated, the expansion hose will squeeze the expansion measuring extrusion head 20. The expansion measuring pressure sensor 19 located between the expansion measuring extrusion head 20 and the expansion measuring slide rod 17 will obtain the pressure. The expansion values ​​of each part of the expansion hose are judged by the different pressure values ​​at different parts, and the performance of the expansion hose is obtained. The design of the expansion measuring slide 15 and the expansion measuring slide rod 17 enables the expansion measuring extrusion head 20 to flexibly contact the expansion hose, and the expansion measuring pressure sensor 19 can feedback the pressure data in real time. The expansion measuring slide rods 17 distributed at equal angles in the circumferential direction of the expansion hose in the annular expansion measuring box 14 enable the expansion degree of each part of the expansion hose to be accurately measured. At the same time, due to multi-point measurement, the expansion uniformity of the expansion hose can be comprehensively evaluated.

[0041] In some embodiments, the temperature control and adjustment component 003 includes a vortex tube 21, a cold air main pipe 22, a cold air secondary pipe 23, a hot air main pipe 25 and a hot air secondary pipe 26;

[0042] The vortex tube 21 is installed on the side of the test frame 1, and the vortex tube 21 is connected to the air supply tank 4. The cold air main pipe 22 is arranged on the side of the heat preservation frame 2, and the cold air main pipe 22 is connected to the cold air delivery end of the vortex tube 21. One end of a plurality of cold air pipes 23 is connected to the cold air main pipe 22, and the other end of the cold air pipe 23 is connected to the cold air nozzle 24. The cold air nozzle 24 is connected to the heat preservation frame 2, and the plurality of cold air nozzles 24 form a cold test area in the heat preservation frame 2.

[0043] A hot gas main pipe 25 is arranged on one side of the insulation frame 2, and the hot gas main pipe 25 is connected to the hot gas delivery end of the vortex tube 21. One end of a plurality of hot gas slave pipes 26 is connected to the hot gas main pipe 25, and the other end of the hot gas slave pipes 26 is connected to a hot gas nozzle 27. The hot gas nozzle 27 is connected to the insulation frame 2, and the plurality of hot gas nozzles 27 form a thermal testing area in the insulation frame 2.

[0044] Specifically, in the actual measurement of the expansion hose, the valve on the air inlet end of the vortex tube 21 can be started according to the different materials and uses of the expansion hose, so that the compressed gas in the air supply tank 4 enters the vortex tube 21. After the compressed gas enters the vortex tube 21, the compressed gas will be cooled and heated through the unique structure in the vortex tube 21. The heated gas will be transported to the hot gas main pipe 25 through the hot gas delivery end on the vortex tube 21, and the hot gas will be ejected from the corresponding hot gas nozzles 27 through multiple hot gas pipes 26, so that the hot gas fills the hot test area, thereby heating the expansion hose in the hot test area. Similarly, the gas cooled by the vortex tube 21 will be transported to the cold gas main pipe 22 along the cold gas delivery end of the vortex tube 21, and the cooled air will be ejected into the cold test area through the cold gas nozzle 24, and the expansion hose will be cooled, thereby changing the test environment for testing the expansion hose, so that the detection accuracy of the expansion hose is more in line with the actual working environment. Temperature control and adjustment components 003 are arranged on both sides of the test frame 1, and the hot test areas formed by the two temperature control and adjustment components 003 correspond to each other, ensuring that the two ends of the expansion hose are respectively located in the hot test area and the cold test area.

[0045] In some embodiments, the cold air main pipe 22 and the hot air main pipe 25 of the temperature control and adjustment component 003 are respectively located on two sides of the vortex tube 21 .

[0046] Specifically, the cold air main pipe 22 and the hot air main pipe 25 are respectively arranged on both sides of the vortex tube 21 to separate the hot test area from the cold test area, thereby avoiding the cold test area formed by the cold air main pipe 22 and the hot test area formed by the hot air main pipe 25 from overlapping and affecting the test effect.

[0047] In some embodiments, the stretching detection assembly 004 includes a dynamic positioning part and a static positioning part, both of which include a positioning slider 31, a tension sensor 32, a tension frame 33, a sealing tube core 34 and a positioning electric cylinder 35. The tension sensor 32 is arranged on the positioning slider 31, the tension frame 33 is connected to the positioning slider 31, the sealing tube core 34 is detachably connected to the tension frame 33, the positioning electric cylinder 35 is connected to the tension frame 33 and the output end of the positioning electric cylinder 35 passes through the tension frame 33 and is connected to the positioning sealing block 36. The positioning sealing block 36 is used to seal the expansion hose on the sealing tube core 34. The positioning slider 31 of the static positioning part is connected to the test frame 1, and the dynamic positioning part is slidably connected to the test frame 1 through the stretching power part.

[0048] Specifically, the dynamic positioning part and the static positioning part cooperate with each other to complete the fixation and stretching of the expansion hose. The positioning slider 31 of the static positioning part is fixed to the test frame 1, and the positioning slider 31 of the dynamic positioning part moves relative to the test frame 1 under the action of the stretching power part. The sealing tube core 34 cooperates with the positioning sealing block 36 to fix the expansion hose. The positioning electric cylinder 35 drives the positioning sealing block 36 to clamp and fix the sealing tube core 34. The sealing tube core 34 is used to seal the end of the expansion hose. The tension sensor 32 can detect the tension of the stretched expansion hose to obtain the tensile performance of the expansion hose. The tension frame 33 is fixedly connected to the positioning slider 31 to move with the positioning slider 31.

[0049] In some embodiments, the stretching power unit includes a power screw 37, a power ball nut group 38 and a power motor 39. The power motor 39 is connected to the side of the test frame 1, and the output end of the power motor 39 is connected to one end of the power screw 37. The power ball nut group 38 is located on the power screw and is threadedly connected to the power screw. The power ball nut group 38 is pivotally connected to the positioning slider 31.

[0050] Specifically, the power motor 39 is used to drive the power screw 37 to rotate, and the power ball nut group 38 moves on the power screw 37 as the power screw 37 rotates forward and reversely. The power ball nut group 38 can drive the positioning slider 31 to move relative to the test frame 1 to achieve the movement of the dynamic positioning part. As the positioning slider 31 moves, the end of the expansion hose on the tension frame 33 moves to complete the stretching operation. The cooperation between the screw and the motor makes the force during stretching more stable and uniform.

[0051] In some embodiments, the cutting detection component 005 includes a cutting electric cylinder 40, a cutting pressure sensor, a cutting adjustment frame 42, a cutting limit rod 43, a cutting screw 44, a cutting ball nut group 45, a cutting motor 46 and a cutting knife seat 47. The cutting electric cylinder 40 is connected to the test frame 1. The cutting sensor is located at the output end of the cutting electric cylinder 40 and abuts against the cutting adjustment frame 42 to detect pressure. Multiple cutting limit rods 43 are arranged on the cutting adjustment frame 42 and are slidably connected to the test frame 1. The cutting motor 46 is located at one end of the cutting adjustment frame 42 and is transmission-connected to one end of the cutting screw 44. The cutting knife seat 47 is located in the cutting adjustment frame 42 and is connected to the cutting ball nut group 45. A scratch cutting knife is set on the cutting knife seat 47.

[0052] Specifically, when the expansion hose is cut and tested, after the expansion hose is fixed in the test position, the expansion hose is straightened by the stretching detection component 004, and the cutting electric cylinder 40 is started. The output end of the cutting electric cylinder 40 drives the cutting pressure sensor to move. The movement of the cutting electric cylinder 40 drives the cutting adjustment frame 42 to move toward one side of the expansion hose. The cutting adjustment frame 42 makes the scratch cutting knife contact the surface of the expansion hose. The cutting pressure sensor can detect the cutting pressure of the scratch cutting knife and the surface of the expansion hose. Then the cutting motor 46 is started. The output end of the cutting motor 46 drives the cutting screw 44 to rotate. The rotation of the cutting screw 44 causes the cutting ball nut group 45 to move. The movement of the cutting ball nut group 45 drives the cutting knife seat 47 to move. The movement of the cutting knife seat 47 drives the scratch cutting knife to move relative to the expansion hose to cut the expansion hose. The design of the cutting electric cylinder 40 and the cutting knife holder 47 can realize precise cutting operation. The cutting pressure sensor can monitor the cutting pressure in real time, simulate the cutting conditions that the expansion hose may suffer, evaluate its anti-cutting performance, and ensure the safe use of the product.

[0053] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An expansion hose tensile and cut resistance testing device, characterized in that: include: A test frame, an air supply component, a pneumatic expansion measurement component, a temperature control and adjustment component, a stretch detection component and a tear detection component. An insulation frame is provided on the test frame, and the test frame extends along a first direction. The air supply component and the pneumatic expansion measurement component are arranged on the insulation frame, and the air supply component is communicated with the pneumatic expansion measurement component. The two temperature control and adjustment components are arranged on the insulation frame and communicated with the air supply component. The stretch detection component is located at the first end of the test frame to perform stretch detection on the expansion hose, and the tear detection component is located at the second end of the test frame to perform tear detection on the expansion hose.

2. The expansion hose tensile and cut resistance testing device according to claim 1, characterized in that: The air supply assembly includes an air supply rack, an air supply tank and an air supply pump. The air supply rack is arranged on the insulation frame. The air supply tank and the air supply pump are arranged on the air supply rack. An air relief valve is installed on the air supply tank. The air supply end of the air supply pump is connected to the air supply tank through an air supply pipe. An air supply valve is installed on the air supply pipe. The air supply tank is connected to the pneumatic expansion measurement assembly.

3. The expansion hose tensile and cut resistance testing device according to claim 2, characterized in that: The pneumatic expansion measuring assembly includes an annular expansion measuring part, an air supply pipe, a pressure relief pipe and a pressure relief valve. Multiple annular expansion measuring parts are arranged on the insulation frame at equal distances along the first direction. Any two adjacent annular expansion measuring parts are connected through a ventilation pipe. The two ends of the air supply pipe are respectively connected to the air supply tank and any of the ventilation pipes. An air supply valve is installed on the air supply pipe. The pressure relief pipe is connected to the ventilation pipe to relieve pressure on the annular expansion measuring part.

4. The expansion hose tensile and cut resistance testing device according to claim 3 is characterized in that: The annular expansion measuring part includes an annular expansion measuring box and an expansion measuring head group, the annular expansion measuring box is connected to the insulation frame, the expansion measuring head group is located in the annular expansion measuring box and is evenly distributed in the circumferential direction of the expansion hose, the expansion measuring head group includes an expansion measuring slide tube, a first expansion measuring spring, an expansion measuring slide rod, a second expansion measuring spring, an expansion measuring pressure sensor and an expansion measuring extrusion head, at least part of the expansion measuring slide tube is located in the annular expansion measuring box and is slidably connected to the annular expansion measuring box, the first expansion measuring spring connects the expansion measuring slide tube to the annular expansion measuring box, at least part of the expansion measuring slide rod is located in the expansion measuring slide tube and is slidably connected to the expansion measuring slide tube, the second expansion measuring spring connects the expansion measuring slide rod to the annular expansion measuring box, the expansion measuring pressure sensor and the expansion measuring extrusion head are sequentially connected to the expansion measuring slide rod.

5. The expansion hose tensile and cut resistance testing device according to claim 1, characterized in that: The temperature control and adjustment component includes a vortex tube, a cold air main pipe, a cold air secondary pipe, a hot air main pipe and a hot air secondary pipe; The vortex tube is installed on the side of the test frame, the vortex tube is connected to the air supply tank, the cold air main pipe is arranged on the side of the heat preservation frame, the cold air main pipe is connected to the cold air delivery end of the vortex tube, one end of a plurality of cold air slave pipes is connected to the cold air main pipe, the other end of the cold air slave pipe is connected to a cold air nozzle, the cold air nozzle is connected to the heat preservation frame and the plurality of cold air nozzles form a cold test area in the heat preservation frame; The hot gas main pipe is arranged on one side of the insulation frame, the hot gas main pipe is connected to the hot gas delivery end of the vortex tube, one end of the multiple hot gas slave pipes is connected to the hot gas main pipe, the other end of the hot gas slave pipe is connected to the hot gas nozzle, the hot gas nozzle is connected to the insulation frame, and the multiple hot gas nozzles form a thermal testing area in the insulation frame.

6. The expansion hose tensile and cut resistance testing device according to claim 5, characterized in that: The cold air main pipe and the hot air main pipe of the temperature control and adjustment component are respectively located on two sides of the vortex tube.

7. The expansion hose tensile and cut resistance testing device according to claim 1, characterized in that: The stretching detection assembly includes a dynamic positioning part and a static positioning part, each of which includes a positioning slider, a tension sensor, a tension frame, a sealing tube core and a positioning electric cylinder. The tension sensor is arranged on the positioning slider, the tension frame is connected to the positioning slider, the sealing tube core is detachably connected to the tension frame, the positioning electric cylinder is connected to the tension frame and the output end of the positioning electric cylinder is connected to the positioning sealing block through the tension frame, the positioning sealing block is used to seal the expansion hose on the sealing tube core, the positioning slider of the static positioning part is connected to the test frame, and the dynamic positioning part is slidably connected to the test frame through the stretching power part.

8. The expansion hose tensile and cut resistance testing device according to claim 7, characterized in that: The stretching power unit includes a power screw, a power ball nut group and a power motor. The power motor is connected to the side of the test frame, and the output end of the power motor is connected to one end of the power screw. The power ball nut group is located on the power screw and is threadedly connected to the power screw. The power ball nut group is pivotally connected to the positioning slider.

9. The expansion hose tensile and cut resistance testing device according to claim 1, characterized in that: The cutting detection component includes a cutting electric cylinder, a cutting pressure sensor, a cutting adjustment frame, a cutting limit rod, a cutting lead screw, a cutting ball nut group, a cutting motor and a cutting knife seat. The cutting electric cylinder is connected to the test frame. The cutting sensor is located on the output end of the cutting electric cylinder and abuts against the cutting adjustment frame to detect pressure. A plurality of the cutting limit rods are arranged on the cutting adjustment frame and are slidably connected to the test frame. The cutting motor is located at one end of the cutting adjustment frame and is transmission-connected to one end of the cutting lead screw. The cutting knife seat is located in the cutting adjustment frame and is connected to the cutting ball nut group. A scratch cutting knife is provided on the cutting knife seat.

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