A ski high-speed friction performance testing device

Abstract

The present invention relates to the technical field of ski performance testing, and discloses a ski high-speed friction performance testing device, comprising a base, a bracket fixed to the upper end surface of the base, a support column fixed to the top of the bracket, force sensors symmetrically fixed to both sides of the support column, and a loading mechanism fixed to the bottom of the force sensor. The ski high-speed friction performance testing device can lower the ski after the ski is mounted on the mounting plate and make it close to the load-bearing snow track, the supporting bearing, the turntable and the load-bearing snow track can rotate as a whole, the ski slides on the load-bearing snow track, the turntable is mounted on a thin slewing bearing, and a temperature system is attached under the supporting bearing to ensure the temperature of the snow in the snow track. The force sensor is used to measure the friction between the ski and the snow during the test, and the American FUTEK measuring sensor is used for force measurement, with a measurement accuracy of 0.1N and a noise signal of less than 0.5%, which can ensure the accuracy and stability of the test.

Description

Technical Field

[0001] The invention relates to the technical field of snowboard performance testing, in particular to a snowboard high-speed friction performance testing device. Background Art

[0002] Skiing is a common sport in people's daily life or in various competitions. Ordinary ski enthusiasts can choose according to the performance and appearance of the skis, but professional skiers need to choose suitable skis from a professional perspective. In order to meet the low-temperature ice and snow friction test equipment integration, software data processing optimization, and ice and snow friction test platform snow surface quality and environmental conditions control of the sports environment, it is necessary to use a ski high-speed friction performance test device.

[0003] Existing high-speed friction performance testing devices for skis generally use sensors to measure force, but the accuracy of general sensors is not enough, which will affect the accuracy and stability of the test. Low temperature will affect the sensor stress sheet. During the friction performance test, it is difficult to simulate the athletes' movement conditions with different turning radii on the track, which will affect the reliability of the test results. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed friction performance testing device for skis to solve the problem raised in the above background technology that the existing high-speed friction performance testing device for skis generally uses sensors to measure force, but the general sensor accuracy is not enough, which will affect the test accuracy and stability, and the low temperature will affect the sensor stress sheet. During the friction performance test, it is difficult to simulate the movement conditions of athletes with different turning radii on the track, which will affect the reliability of the test results.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ski high-speed friction performance testing device, comprising a base, the upper end surface of the base is rotatably connected to a supporting bearing, the upper end surface of the supporting bearing is fixed with a turntable by fixing bolts, and the upper end surface of the turntable is fixed with a load-bearing snow track.

[0006] A bracket is fixed on the upper end surface of the base, a support column is fixed on the top of the bracket, force sensors are symmetrically fixed on both sides of the support column, and a loading mechanism is fixed on the bottom of the force sensor.

[0007] Preferably, a first motor is fixed in the base, and the top of the first motor is connected to the supporting bearing.

[0008] Preferably, a groove is provided on the upper end surface of the turntable, and a compression spring is fixed to the bottom of the groove, a clamping ring is fixed to the top of the compression spring, and the clamping ring is rotatably connected in the groove, and the clamping ring is clamped and connected to the bottom of the support column.

[0009] Preferably, the loading mechanism includes an electric telescopic column, and the electric telescopic column is fixed at the bottom of the force sensor, a first support frame is fixed to the bottom of the electric telescopic column, and a second motor is fixed to one side of the first support frame, the output end of the second motor is connected to a circular gear, and the circular gear is rotatably connected to the inner side of the first support frame.

[0010] Preferably, the outer side of the circular gear is meshedly connected with a first incomplete gear, and the first incomplete gear is rotatably connected to the inner side of the first supporting frame.

[0011] Preferably, a support plate is fixed to the bottom of the first incomplete gear, and a second support frame is fixed to the bottom of the support plate, a second incomplete gear is rotatably connected to the inner side of the second support frame, and a mounting plate is fixed to the bottom of the second incomplete gear.

[0012] Preferably, a support rod is fixed to the top of the first incomplete gear, and a first piston is fixed to the bottom of the support rod. An oil storage pipeline is fixed to the outer side of the first support frame, and the first piston is slidably connected in the oil storage pipeline.

[0013] Preferably, an oil storage channel is opened on the inner end surface of the support plate, and the oil storage channel is connected with the oil storage pipeline through a connecting pipeline, and a second piston is slidably connected in the oil storage channel.

[0014] Preferably, a movable plate is fixed to the inner side of the second piston, and a rack is fixed to the bottom of the movable plate, and the rack is meshingly connected to the top of the second incomplete gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The ski high-speed friction performance test device can achieve the purpose of accurate force measurement through the coordinated use of the supporting bearing, turntable, load-bearing snow track, force sensor and mounting plate. After the ski is installed on the mounting plate, the ski can be lowered and made close to the load-bearing snow track. The supporting bearing, turntable and load-bearing snow track can rotate as a whole. The ski slides on the load-bearing snow track. The turntable is installed on a thin slewing bearing. A temperature system is provided under the supporting bearing to ensure the temperature of the snow in the snow track. The force sensor is used to measure the friction between the ski and the snow during the test. The American FUTEK measuring sensor is used for force measurement. The measurement accuracy is 0.1N and the noise signal is less than 0.5%, which can ensure the accuracy and stability of the test.

[0017] 2. The ski high-speed friction performance testing device can achieve the purpose of simulating the posture of athletes through the coordinated use of the supporting snow track, the first incomplete gear, the support plate, the second support frame, the second incomplete gear, the mounting plate, the first piston, the oil storage pipeline, the second piston and the moving plate. When the ski slides on the supporting snow track, the rotation of the first incomplete gear can drive the supporting plate and the second support frame to rotate as a whole. The inclination angle of the second support frame and the supporting snow track is adjustable to simulate the movement conditions of athletes with different turning radii on the track. When the first incomplete gear rotates, the first piston slides in the oil storage pipeline, and hydraulic oil is stored in the oil storage pipeline. The second piston slides left and right under the action of the hydraulic pressure, and the moving plate moves left and right. The second incomplete gear, the mounting plate and the ski rotate as a whole to ensure that the ski can always fit horizontally on the supporting snow track.

[0018] 3. The ski board high-speed friction performance testing device can achieve the purpose of convenient disassembly and assembly through the coordinated use of the turntable, the clamping ring and the support column. The turntable is detachable. Before disassembling the turntable, it is necessary to manually press the clamping ring downward and make it leave the support column. After the turntable is installed, the clamping ring can be loosened, and the clamping ring automatically pops up and clamps to the bottom of the support column, so as to support and limit the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 It is a front view schematic diagram of the appearance structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the loading mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the front cross-sectional structure of the loading mechanism of the present invention.

[0024] In the figure: 1. base; 2. first motor; 3. supporting bearing; 4. turntable; 5. fixing bolt; 6. load-bearing snow track; 7. groove; 8. compression spring; 9. snap ring; 10. bracket; 11. support column; 12. force sensor; 13. loading mechanism; 1301. electric telescopic column; 1302. first support frame; 1303. second motor; 1304. circular gear; 1305. first incomplete gear; 1306. support plate; 1307. second support frame; 1308. second incomplete gear; 1309. mounting plate; 1310. support rod; 1311. first piston; 1312. oil storage pipeline; 1313. connecting pipeline; 1314. oil storage channel; 1315. second piston; 1316. moving plate; 1317. rack. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 The present invention provides a technical solution: a ski high-speed friction performance testing device, comprising a base 1, the upper end surface of the base 1 is rotatably connected to a supporting bearing 3, the upper end surface of the supporting bearing 3 is fixed with a turntable 4 through a fixing bolt 5, and the upper end surface of the turntable 4 is fixed with a bearing snow track 6.

[0027] A bracket 10 is fixed to the upper end surface of the base 1 , a support column 11 is fixed to the top of the bracket 10 , force sensors 12 are symmetrically fixed to both sides of the support column 11 , and a loading mechanism 13 is fixed to the bottom of the force sensor 12 .

[0028] In this embodiment, Figure 2 As shown, a first motor 2 is fixed in the base 1, and the top of the first motor 2 is connected to the supporting bearing 3. The supporting bearing 3 can rotate under the action of the first motor 2, thereby driving the supporting snow track 6 to rotate, which is convenient for simulating the sliding of the skis on the snow.

[0029] In this embodiment, Figure 1 and Figure 2 As shown, a groove 7 is provided on the upper end surface of the turntable 4, and a compression spring 8 is fixed at the bottom of the groove 7, a snap ring 9 is fixed at the top of the compression spring 8, and the snap ring 9 is rotatably connected in the groove 7, the snap ring 9 is snap-connected to the bottom of the support column 11, and the compression spring 8 supports the snap ring 9. When installing and disassembling the turntable 4, it is necessary to press the snap ring 9 downward and make it leave the support column 11, and then the turntable 4 can be disassembled.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the loading mechanism 13 includes an electric telescopic column 1301, and the electric telescopic column 1301 is fixed at the bottom of the force sensor 12, a first support frame 1302 is fixed at the bottom of the electric telescopic column 1301, and a second motor 1303 is fixed on one side of the first support frame 1302, the output end of the second motor 1303 is connected to a circular gear 1304, and the circular gear 1304 is rotatably connected to the inner side of the first support frame 1302, the first support frame 1302 can move downward under the elongation of the electric telescopic column 1301, so as to facilitate the lowering of the ski board to the load-bearing snow track 6 for friction performance testing, and the circular gear 1304 can rotate under the action of the second motor 1303.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the outer side of the circular gear 1304 is meshedly connected with the first incomplete gear 1305, and the first incomplete gear 1305 is rotatably connected to the inner side of the first support frame 1302. The rotation of the circular gear 1304 can drive the first incomplete gear 1305 to rotate.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a support plate 1306 is fixed to the bottom of the first incomplete gear 1305, and a second support frame 1307 is fixed to the bottom of the support plate 1306. The second support frame 1307 is rotatably connected to the inner side of the second incomplete gear 1308, and a mounting plate 1309 is fixed to the bottom of the second incomplete gear 1308. A ski board can be mounted on the bottom of the mounting plate 1309. When the ski board slides on the load-bearing snow track 6, the rotation of the first incomplete gear 1305 can drive the support plate 1306 and the second support frame 1307 to rotate. The inclination of the second support frame 1307 simulates the inclination of human body movement, which is convenient for comprehensive detection of the friction performance of the ski board.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a support rod 1310 is fixed to the top of the first incomplete gear 1305, and a first piston 1311 is fixed to the bottom of the support rod 1310, an oil storage pipe 1312 is fixed to the outside of the first support frame 1302, and the first piston 1311 is slidably connected in the oil storage pipe 1312. The rotation of the first incomplete gear 1305 can drive the support rod 1310 to rotate, and the first piston 1311 slides in the oil storage pipe 1312. Hydraulic oil is stored in the oil storage pipe 1312 to facilitate oil extraction or oil compression.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, an oil storage channel 1314 is opened on the inner end surface of the support plate 1306, and the oil storage channel 1314 is connected with the oil storage pipeline 1312 through the connecting pipeline 1313. A second piston 1315 is slidably connected in the oil storage channel 1314. The connecting pipeline 1313 serves to connect the oil storage pipeline 1312 and the oil storage channel 1314. When the first piston 1311 slides in the oil storage pipeline 1312, it can draw pressure oil into the oil storage channel 1314.

[0035] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a movable plate 1316 is fixed to the inner side of the second piston 1315, and a rack 1317 is fixed to the bottom of the movable plate 1316, the rack 1317 is meshedly connected to the top of the second incomplete gear 1308, and the bottom of the mounting plate 1309 can be installed with a ski board. When the first piston 1311 slides in the oil storage pipe 1312, the second piston 1315 can slide to the left or right under the action of the hydraulic pressure, thereby driving the movable plate 1316 to move to the left or right. Since the rack 1317 is meshedly connected to the second incomplete gear 1308, the second incomplete gear 1308 will rotate with the movement of the movable plate 1316. When the second support frame 1307 rotates and tilts, the ski board can always slide on the load-bearing snow track 6.

[0036] The use method and advantages of the present invention: The working process of the ski high-speed friction performance testing device is as follows:

[0037] like Figures 1 to 5As shown: First, the ski is mounted on the mounting plate 1309 by external bolts, the electric telescopic column 1301 is extended, the ski is lowered and pressed against the load-bearing snow track 6, the turntable 4 and the load-bearing snow track 6 rotate together with the supporting bearing 3, and the rotation speed is adjustable at 0-288r / min. The ski slides on the load-bearing snow track 6, and the force sensor 12 is used to measure the friction between the ski and the snow during the test. The force sensor 12 uses the American FUTEK measurement sensor with an operating temperature of -50 to 80°C and an accuracy of ±0.1% to measure force to ensure the accuracy of the force measurement. The rotation of the circular gear 1304 can drive the first incomplete gear 1305 to rotate, from The support plate 1306 and the second support frame 1307 are driven to rotate to simulate the movement conditions of athletes with different turning radii on the track. When the first incomplete gear 1305 rotates, it can drive the support rod 1310 to rotate, and the first piston 1311 slides in the oil storage pipe 1312. The oil storage pipe 1312 stores hydraulic oil. The second piston 1315 slides left and right under the action of hydraulic pressure, and the movable plate 1316 slides left and right to drive the second incomplete gear 1308 to rotate, and the mounting plate 1309 and the snowboard rotate accordingly. In the process of adjusting the angle of the support plate 1306 and the second support frame 1307, the snowboard can always stick to the load-bearing snow track 6 to ensure the stability of sliding.

[0038] In summary, the ski high-speed friction performance testing device achieves the purpose of accurate force measurement, simulation of athlete posture and convenient disassembly and assembly, and meets people's usage needs.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0040] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ski high-speed friction performance testing device, comprising a base (1), characterized in that: The upper end surface of the base (1) is rotatably connected to a support bearing (3), the upper end surface of the support bearing (3) is fixed to a turntable (4) via a fixing bolt (5), and the upper end surface of the turntable (4) is fixed to a load-bearing snow track (6); A bracket (10) is fixed to the upper end surface of the base (1), a support column (11) is fixed to the top of the bracket (10), force sensors (12) are symmetrically fixed to both sides of the support column (11), a loading mechanism (13) is fixed to the bottom of the force sensor (12), the loading mechanism (13) comprises an electric telescopic column (1301), and the electric telescopic column (1301) is fixed to the bottom of the force sensor (12), a first support frame (1302) is fixed to the bottom of the electric telescopic column (1301), and the first support frame (1302) is fixed to the bottom of the electric telescopic column (1301), and the first support frame (1302) is fixed to the bottom of the electric telescopic column (1301). A second motor (1303) is fixed on one side of the first support frame (1302), the output end of the second motor (1303) is connected to a circular gear (1304), and the circular gear (1304) is rotatably connected to the inner side of the first support frame (1302), the outer side of the circular gear (1304) is meshedly connected to a first incomplete gear (1305), and the first incomplete gear (1305) is rotatably connected to the inner side of the first support frame (1302), and a support plate (1306) is fixed to the bottom of the first incomplete gear (1305), and the bottom of the support plate (1306) is fixed to the bottom of the first incomplete gear (1305). A second support frame (1307) is fixed to the first support frame (1302), a second incomplete gear (1308) is rotatably connected to the inner side of the second support frame (1307), and a mounting plate (1309) is fixed to the bottom of the second incomplete gear (1308), a support rod (1310) is fixed to the top of the first incomplete gear (1305), and a first piston (1311) is fixed to the bottom of the support rod (1310), an oil storage pipe (1312) is fixed to the outer side of the first support frame (1302), and the first piston (1311) is slidably connected to the oil storage pipe An oil storage channel (1314) is provided on the inner end surface of the support plate (1306), and the oil storage channel (1314) is connected to the oil storage channel (1312) through a connecting pipe (1313). A second piston (1315) is slidably connected in the oil storage channel (1314), a movable plate (1316) is fixed on the inner side of the second piston (1315), and a rack (1317) is fixed on the bottom of the movable plate (1316), and the rack (1317) is meshingly connected to the top of the second incomplete gear (1308).

2. A ski high-speed friction performance testing device according to claim 1, characterized in that: A first motor (2) is fixed inside the base (1), and the top of the first motor (2) is connected to a supporting bearing (3).

3. A ski high-speed friction performance testing device according to claim 1, characterized in that: The upper end surface of the rotating disk (4) is provided with a groove (7), and a compression spring (8) is fixed at the bottom of the groove (7), a clamping ring (9) is fixed at the top of the compression spring (8), and the clamping ring (9) is rotatably connected in the groove (7), and the clamping ring (9) is clamped and connected to the bottom of the support column (11).

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