Fatigue performance detection device for ski veneer fixer

Abstract

The utility model discloses a fatigue performance detection device for a ski veneer fixer. The fatigue performance detection device comprises a mounting rack fixedly arranged on a workbench, an alternate force application mechanism assembled on the mounting rack, and a sample tool fixedly arranged on the workbench and located under the alternate force application mechanism during a test, the sample tool comprises a positioning plate used for being fixedly arranged on the workbench, the positioning plate is provided with an assembling hole used for installing a fixator sample, and after the fixator sample is installed on the positioning plate, the angle between the fixator sample and the positioning plate is 15 + / -3 degrees; the sample tool further comprises a test boot sole used for being placed in a fixator sample. The alternate force application mechanism comprises a front tip force application assembly and a heel force application assembly which are the same in structure, and the output end of the front tip force application assembly and the output end of the heel force application assembly face the test boot sole in the test process. According to the utility model, the fatigue test of the skiing veneer fixer can be realized according to standard requirements, and technical support and equipment guarantee are provided for fatigue test items during the performance test of the skiing veneer fixer in China.

Description

Technical Field

[0001] The utility model relates to the performance test of a snowboard binding, in particular to a fatigue performance detection device for a snowboard binding. Background Art

[0002] A snowboard binding is a connecting component between a ski boot and a snowboard, and it plays an important role in protecting the personal safety of skiers.

[0003] To urge snow sports equipment manufacturers to improve product quality and ensure the sports safety of snow sports enthusiasts and professional athletes, six national standards for snowboard bindings, namely GB / T 40923.1-2021, GB / T 40923.2-2021, GB / T 40925-2021, GB / T 40928-2021, GB / T 40932-2021, and GB / T 40940-2021, are currently implemented in China.

[0004] Among them, GB / T 40932-2021 "Snowboard Step-in Bindings - Requirements and Test Methods" gives the fatigue test method for snowboard bindings, that is, 6.7.4 Fatigue test: Test the snowboard binding 50,000 times with a sinusoidal load cycle in the ±M y direction at a maximum frequency of 1 Hz, see Figure 3 in GB / T 40932-2021 "Snowboard Step-in Bindings - Requirements and Test Methods". The test torque for adult bindings is ±100 N·m, and the test torque for children's bindings is ±(66 ± 3.3) N·m. Install the binding on a steel plate with a minimum thickness of 10 mm. Apply the torque with a test boot sole conforming to ISO 9838.

[0005] This standard also stipulates that after the fatigue test, the binding shall ensure to meet the following requirements: the binding has no signs of fracture, crack or other permanent damage; the binding can connect the ski boot in the original way; the ski boot can be removed from the binding in the original way.

[0006] Therefore, there is an urgent need to develop a fatigue testing machine for snowboard bindings to provide technical support and equipment guarantee for the above fatigue test. Summary of the Utility Model

[0007] To solve the above deficiencies in the prior art, the utility model aims to provide a fatigue performance detection device for a snowboard binding, so as to achieve the fatigue test of the snowboard binding according to the standard requirements.

[0008] To achieve the above object, the technical solution adopted by the present utility model is as follows: A fatigue performance detection device for a snowboard binding, comprising a mounting frame fixedly arranged on a workbench, an alternating force application mechanism assembled on the mounting frame, and a specimen tooling fixedly arranged on the workbench and located directly below the alternating force application mechanism during the test;

[0009] The specimen tooling includes a positioning plate fixedly arranged on the workbench. The positioning plate is provided with an assembly hole for installing the binding specimen. And when the binding specimen is installed on the positioning plate, the angle between the binding specimen and the positioning plate is 15° ± 3°;

[0010] The specimen tooling further includes a test boot sole to be placed in the binding specimen;

[0011] The alternating force application mechanism includes a front tip force application component and a heel force application component with the same structure. During the test, the output ends of the front tip force application component and the heel force application component face the test boot sole.

[0012] As a limitation of the present utility model, both the front tip force application component and the heel force application component include a linear actuator assembled on the mounting frame with the output end facing downwards, a force value sensor assembled on the output end of the linear actuator, and a force application workpiece assembled below the force value sensor;

[0013] The force application workpiece contacts the test boot sole to apply a downward pressure.

[0014] As a further limitation of the present utility model, the force application workpiece includes a connecting rod fixedly arranged below the force value sensor and a force application rod detachably assembled at the bottom end of the connecting rod.

[0015] As a further further limitation of the present utility model, a magnetic slot is provided at the bottom end of the connecting rod; a block made of magnetic metal is fixedly arranged at the top end of the force application rod.

[0016] As a further further limitation of the present utility model, corresponding pin shaft holes are provided in the radial direction at the bottom end of the connecting rod and the top end of the force application rod to detachably assemble the connecting rod and the force application rod through a pin shaft.

[0017] As a further further limitation of the present utility model, the linear actuator is a cylinder;

[0018] A pressure regulating valve for adjusting the output force value of the cylinder is provided on the pipeline between the cylinder and the air source.

[0019] As another limitation of the present utility model, a rectangular through groove is provided on the top plate of the mounting frame for the output ends of the front tip force application component and the heel force application component to extend downward;

[0020] The front tip force - applying component and the heel force - applying component are both assembled on the top plate of the mounting frame through a mounting plate. Long - slot holes are provided on the mounting plate to make the distance between the front tip force - applying component and the heel force - applying component adjustable.

[0021] As a further limitation of the present utility model, a scale is provided on the top plate of the mounting frame along the length direction of the through - slot. The zero point of the scale corresponds to the center of the positioning plate, and the scale values increase sequentially from the zero point to both ends.

[0022] As another limitation of the present utility model, it further includes a cabinet. The cabinet has a workbench for fixedly installing the mounting frame and the specimen tooling.

[0023] A storage cabinet is provided below the workbench of the cabinet; a PLC controller for controlling the alternating force - applying mechanism and a touch screen electrically connected to the PLC controller are provided on one side of the workbench of the cabinet.

[0024] As a further limitation of the present utility model, a door for enclosing the workbench is provided on the cabinet; the door is made of acrylic board.

[0025] Due to the adoption of the above - mentioned technical solutions, compared with the prior art, the beneficial effects obtained by the present utility model are as follows:

[0026] (1) The present utility model can realize the fatigue test of snowboard bindings according to the standard requirements, providing technical support and equipment guarantee for the fatigue test items during the performance test of domestic snowboard bindings. Specifically, the present utility model uses the specimen tooling to position the binding specimen, and uses the alternating force - applying mechanism to alternately apply downward pressure to the front tip and the heel of the binding specimen. The formed test torque meets the standard requirements, and the fatigue test can be carried out according to the standard requirements, and the test result has high accuracy.

[0027] (2) In the present utility model, the force - applying workpiece includes a connecting rod fixedly arranged below the force value sensor and a force - applying rod detachably connected to the connecting rod by magnetic attraction means or a pin shaft. The segmented detachable structure of the force - applying workpiece enables the working end of the force - applying rod to be as close as possible to the test boot sole, thereby shortening the stroke distance of the force - applying workpiece, making the test efficiency higher, the test effect better, and also making the specimen replacement more convenient.

[0028] It should be noted that due to the certain depth of the test boot sole, if the force - applying workpiece has a non - detachable structure and the bottom end of the force - applying workpiece is too close to the test boot sole, interference will occur between the two, making it difficult to disassemble and replace the test boot sole and the binding specimen.

[0029] (3) In the present utility model, the output pressure of the air source is adjusted through a pressure regulating valve to accurately control the output force value of the cylinder. Then, combined with the force value sensor, it can apply a test torque that meets the standard requirements according to different types of binding specimens.

[0030] (4) In the present utility model, long slots are provided on the mounting plate, and the distance between the front tip force application assembly and the heel force application assembly can be adjusted by cooperating with corresponding fixing bolts, so that the positions of the front tip force application assembly and the heel force application assembly can be adjusted to meet the standard requirements according to different types of binding specimens.

[0031] In addition, the scale provided on the top plate of the mounting frame provides a reference for testers when adjusting the above-mentioned distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0034] Figure 2 It is a schematic structural diagram of an embodiment of the present utility model without a cabinet;

[0035] Figure 3 It is a front view of the structural relationship of an embodiment of the present utility model without a cabinet;

[0036] Figure 4 It is a top view of the structural relationship between the positioning plate and the test boot sole in an embodiment of the present utility model;

[0037] In the figure: 1, cabinet; 2, storage cabinet; 3, workbench; 4, touch screen; 5, casters; 6, mounting frame; 7, optical axis fixing base; 8, optical axis; 9, top plate; 10, scale; 11, front tip force application assembly; 12, heel force application assembly; 13, cylinder; 14, force value sensor; 15, connecting rod; 16, force application rod; 17, pressure regulating valve; 18, long slot; 19, positioning plate; 20, test boot sole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following describes the preferred embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and understanding of the present utility model, and are not used to limit the present utility model.

[0039] This embodiment discloses a fatigue performance detection device for snowboard bindings, which can perform fatigue tests on snowboard bindings according to GB / T 40932-2021 "Snowboard Step-in Bindings - Requirements and Test Methods" to judge their performance.

[0040] As Figures 1 to 4 shown, this embodiment includes a cabinet 1 with a workbench 3, a mounting frame 6 fixed on the workbench 3 of the cabinet 1, an alternating force application mechanism assembled on the mounting frame 6, and a specimen tooling fixed on the workbench 3 of the cabinet 1 and located directly below the alternating force application mechanism during the test.

[0041] It should be noted that according to the customer's requirements, it is also possible not to set up the cabinet 1, but directly assemble the mounting bracket 6, the alternating force application mechanism and the specimen tooling on the workbench 3 of other testing equipment.

[0042] The cabinet 1 has a cuboid structure. As Figure 1 shown, a storage cabinet 2 is provided at the bottom for placing specimen holders, specimen tooling, etc.; above the storage cabinet 2 is the workbench 3 of the cabinet 1 for fixing the mounting bracket 6 and the specimen tooling; on one side of the workbench 3 above the storage cabinet 2, a PLC controller for controlling the above-mentioned alternating force application mechanism and a touch screen 4 electrically connected to the PLC controller are provided. Through the touch screen 4, the test frequency can be set, the test torque can be observed, the test times can be counted, etc.

[0043] In order to improve the safety of the test process, in this embodiment, a door is provided on the cabinet 1 for enclosing the workbench 3 to form a closed working environment. The door is made of transparent acrylic board, enabling the test personnel to observe the test situation in real time.

[0044] In addition, for the convenience of movement, in this embodiment, casters 5 with adjusting blocks are provided at the bottom of the cabinet 1.

[0045] The mounting bracket 6 is fixed on the workbench 3 of the cabinet 1 and is used for mounting the alternating force application mechanism. As Figure 2 shown, the mounting bracket 6 includes two optical axis fixing bases 7 relatively fixed on the workbench 3, a plurality of optical axes 8 vertically upwardly fixed on the optical axis fixing bases 7 (in this embodiment, two optical axes 8 are fixed on each optical axis fixing base 7), and a top plate 9 fixed at the top of the optical axes 8. In this embodiment, a rectangular through groove is formed in the middle of the top plate 9 along the length direction, and this through groove is used for the working end of the alternating force application mechanism to extend downward to contact the specimen tooling below.

[0046] Furthermore, a scale 10 is also provided on the top plate 9 along the length direction of the through groove. The zero point of the scale 10 corresponds to the center of the top plate 9, and the scale values of the scale 10 increase sequentially from the zero point to both ends. The maximum scale value of the scale 10 is 20, and the unit is cm.

[0047] The alternating force application mechanism is assembled on the mounting bracket 6. As Figure 2 and Figure 3 shown, it includes a front tip force application component 11 and a heel force application component 12 with the same structure. Taking the front tip force application component 11 as an example to elaborate its structure. As Figure 2As shown in the figure, the front tip force application assembly 11 includes a linear driver, a force value sensor 14, and a force application workpiece. Among them, the linear driver is assembled on the mounting frame 6 through a mounting plate, and its output end faces vertically downward. In this embodiment, the linear driver is a cylinder 13, and a pressure regulating valve 17 controlled by a PLC controller is provided on the pipeline between the cylinder 13 and the air source to adjust the output pressure of the air source to control the output force value of the cylinder 13. Of course, according to actual situations, an oil cylinder, a linear motor, etc. can also be used to replace the cylinder 13. The force value sensor 14 is fixedly arranged on the output end of the cylinder 13 to detect the force value applied by the cylinder 13 to the fixture specimen. In this embodiment, the force value sensor 14 is a spoke-type sensor. The force application workpiece is used to contact the specimen tooling to apply a downward pressure. As Figure 2 and Figure 3 shown, the force application workpiece includes a connecting rod 15 fixedly arranged below the force value sensor 14 and a force application rod 16 detachably assembled at the bottom end of the connecting rod 15. In this embodiment, a magnetic slot (i.e., a magnet is fixedly arranged in the slot) is provided at the bottom end of the connecting rod 15, and a clamping block made of magnetic metal is fixedly arranged at the top end of the force application rod 16. By placing the clamping block into the slot, the fixation between the force application rod 16 and the connecting rod 15 can be realized. In this embodiment, the force application rod 16 is entirely made of iron.

[0048] Furthermore, to ensure the stability of the connection, in this embodiment, pin holes are arranged radially at both the bottom end of the connecting rod 15 and the top end of the force application rod 16. After inserting the clamping block at the top end of the force application rod 16 into the slot at the bottom end of the connecting rod 15, the pin holes of the two coincide, and inserting a pin into the pin hole realizes the fixation between the force application rod 16 and the connecting rod 15.

[0049] It should be noted that according to needs, only the connection method of the pin hole and the pin in cooperation can also be selected to form a detachable assembly between the connecting rod 15 and the force application rod 16.

[0050] More specifically, two long slots 18 are provided on the mounting plates of the front tip force application assembly 11 and the heel force application assembly 12, as Figure 2 shown. Correspondingly, second long slots or circular through holes are provided at the corresponding positions on the top plate 9 of the mounting frame 6. In this embodiment, four second long slots are correspondingly provided on the top plate 9 of the mounting frame 6. Align the long slots 18 of the front tip force application assembly 11 and the heel force application assembly 12 with the second long slots on the top plate 9 of the mounting frame 6, and then insert fixing bolts for fixation, so as to realize the assembly of the front tip force application assembly 11 and the heel force application assembly 12 on the top plate 9 of the mounting frame 6. Moreover, the use of the long slots 18 enables the adjustable spacing between the front tip force application assembly 11 and the heel force application assembly 12.

[0051] The specimen tooling includes a positioning plate 19 fixedly arranged on the workbench 3 and a test boot sole 20 for placing the retainer specimen. Among them, the positioning plate 19 is provided with assembly holes for installing the retainer specimen, and according to the standard requirements, when the retainer specimen is installed on the positioning plate 19, the angle between the retainer specimen and the positioning plate 19 should be 15° ± 3°.

[0052] The retainer specimen is not shown in the attached drawings of this embodiment. Since the position of the test boot sole 20 coincides with the position of the retainer specimen, for the convenience of understanding, this embodiment specifically provides Figure 4 , by indicating the angle between the test boot sole 20 and the positioning plate 19 (i.e., β = 15° ± 3°), to illustrate the positional relationship between the retainer specimen and the positioning plate 19.

[0053] It should be noted that when the specimen tooling is assembled on the workbench 3, the center of the positioning plate 19 corresponds to the center of the top plate 9 of the above-mentioned mounting bracket 6, the front tip of the test boot sole 20 corresponds to the working end of the front tip force application assembly 11, and the heel of the test boot sole 20 corresponds to the output end of the heel force application assembly 12.

[0054] When performing a fatigue test on the retainer specimen according to 6.7.4 Fatigue Test of GB / T 40932-2021 "Snowboard Step-in Bindings - Requirements and Test Methods": First, assemble the retainer specimen on the positioning plate 19 of the workbench 3, and then place the test boot sole 20 into the retainer specimen; then install the force application rod 16 on the connecting rod 15, and adjust the distance between the front tip force application assembly 11 and the heel force application assembly 12 to the standard requirements with reference to the scale 10, so that the bottom end of the force application rod 16 in the front tip force application assembly 11 faces the front tip of the test boot sole 20, and the bottom end of the force application rod 16 in the heel force application assembly 12 faces the heel of the test boot sole 20; then start the cylinder 13, and on the premise of detecting the value through the force value sensor 14 with reference to the touch screen 4, adjust the output force value of the cylinder 13 to the standard requirements through the pressure regulating valve 17, and then conduct the test: the front tip force application assembly 11 presses down the front tip of the test boot sole 20, and the heel force application assembly 12 lifts; the front tip force application assembly 11 lifts, and the heel force application assembly 12 presses down the heel of the test boot sole 20.

[0055] After cycling the test 50,000 times, observe whether the structure of the retainer specimen is intact.

[0056] It should be noted that the above-mentioned are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ski binding fatigue performance detection device, characterized in that: It includes a mounting frame for fixing on a workbench, an alternating force-applying mechanism assembled on the mounting frame, and a specimen fixture for fixing on the workbench and located directly below the alternating force-applying mechanism during the test; The sample fixture comprises a positioning plate for fixing on a workbench, the positioning plate is provided with an assembly hole for installing the fixture sample, and when the fixture sample is installed on the positioning plate, the angle between the fixture sample and the positioning plate is 15°±3°; The specimen fixture also includes a test shoe sole for placement into the fixture specimen; The alternating force applying mechanism comprises a front tip force applying component and a heel force applying component of the same structure. During the test, the output ends of the front tip force applying component and the heel force applying component face toward the test shoe sole.

2. The ski binding fatigue performance detection device according to claim 1, characterized in that: The front tip force applying assembly and the heel force applying assembly both include a linear drive mounted on a mounting frame with the output end facing downward, a force sensor mounted on the output end of the linear drive, and a force applying workpiece mounted below the force sensor; The force applying working member contacts the test shoe sole to apply downward force.

3. The ski binding fatigue performance detection device according to claim 2, characterized in that: The force-applying working piece comprises a connecting rod fixedly arranged below the force value sensor and a force-applying rod detachably assembled at the bottom end of the connecting rod.

4. The ski binding fatigue performance detection device according to claim 3, characterized in that: A magnetic card slot is arranged at the bottom end of the connecting rod; a card block made of magnetic metal is fixedly arranged at the top end of the force applying rod.

5. The ski binding fatigue performance detection device according to claim 2 or 3, characterized in that: The bottom end of the connecting rod and the top end of the force applying rod are provided with corresponding pin holes in the radial direction, so that the connecting rod and the force applying rod can be detachably assembled through the pin.

6. The ski binding fatigue performance detection device according to claim 5, characterized in that: The linear actuator is a pneumatic cylinder; A pressure regulating valve for adjusting the output force value of the cylinder is arranged on the pipeline between the cylinder and the gas source.

7. The ski binding fatigue performance detection device according to any one of claims 1 to 4 and 6, characterized in that: A rectangular through slot is provided on the top plate of the mounting frame for the output ends of the front tip force applying component and the rear heel force applying component to extend downward; The front tip force applying assembly and the heel force applying assembly are both mounted on the top plate of the mounting frame through a mounting plate, and the mounting plate is provided with long holes to make the spacing between the front tip force applying assembly and the heel force applying assembly adjustable.

8. The ski binding fatigue performance detection device according to claim 7, characterized in that: A scale is provided on the top plate of the mounting frame along the length direction of the through slot, the zero point of the scale corresponds to the center of the positioning plate, and the scale values ​​of the scale increase from the zero point to both ends.

9. The ski binding fatigue performance detection device according to any one of claims 1-4, 6, and 8, characterized in that: It also includes a cabinet having a workbench for fixing a mounting frame and a sample tool; A storage cabinet is arranged under the working table of the cabinet; a PLC controller for controlling the alternating force application mechanism and a touch screen electrically connected to the PLC controller are arranged on one side of the working table of the cabinet.

10. The ski binding fatigue performance detection device according to claim 9, characterized in that: The cabinet is provided with a door for closing the workbench; the door is made of an acrylic plate.

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