CN108362582B - Mechanical property testing device for badminton racket - Google Patents
Mechanical property testing device for badminton racket Download PDFInfo
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- CN108362582B CN108362582B CN201810300621.XA CN201810300621A CN108362582B CN 108362582 B CN108362582 B CN 108362582B CN 201810300621 A CN201810300621 A CN 201810300621A CN 108362582 B CN108362582 B CN 108362582B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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Abstract
The invention relates to a mechanical property testing device of a badminton racket, which comprises a frame, a lower moving mechanism, an upper moving mechanism, a clamping mechanism, a positioning seat lifting mechanism, a vibration sensor and a loading hammer provided with a lifting hook, wherein the lower moving mechanism is arranged on the frame; the lower moving mechanism can be connected to the frame in a sliding manner relative to the frame; the upper moving mechanism can be connected to the lower moving mechanism in a sliding manner relative to the lower moving mechanism, the clamping mechanism is connected to the upper moving mechanism, and the tested badminton racket is fixed on the clamping mechanism; the lifting mechanism is arranged below the lower moving mechanism, the positioning seat is fixed at the upper end of the lifting mechanism, and the loading hammer is positioned on the positioning seat and moves up and down along with the lifting of the positioning seat; when the mechanical property is tested, a test point on the tested badminton racket faces to the center of the positioning seat, the lifting mechanism drives the loading hammer to move upwards, the lifting hook of the loading hammer is hooked on the racket surface, the loading hammer is knocked, the test point on the racket is loaded, and the vibration sensor transmits vibration information of the test point.
Description
Technical Field
The invention relates to a mechanical property testing device, in particular to a mechanical property testing device of a badminton racket.
Background
The batting quality of badminton players is closely related to the racket used by the badminton players, such as the elasticity of the racket surface, the hardness of the racket rod and the like, besides the batting quality of the badminton players is related to the sport level of the badminton players. It is desirable for professional athletes to have a racquet with properties that are tailored to the characteristics of their own shots, such as the elasticity and stick stiffness required to fit the sweet spot of their own shots. Therefore, the performance detection of the finished racket is particularly important, and no device for rapidly testing the mechanical performances of the badminton racket, such as elasticity, hardness and the like, is available at present, so that the rapid detection of the performance of the badminton racket becomes difficult.
Disclosure of Invention
The invention aims to provide a device capable of rapidly testing mechanical properties of a badminton racket product. The technical scheme is as follows:
a mechanical property testing device of a badminton racket comprises a frame, a lower moving mechanism, an upper moving mechanism, a clamping mechanism, a positioning seat, a vibration sensor and a loading hammer provided with a lifting hook; the lower moving mechanism can be arranged on the rack in a sliding manner relative to the rack; the upper moving mechanism can be arranged on the lower moving mechanism in a sliding manner relative to the lower moving mechanism, and the sliding direction is vertical to the sliding direction of the lower moving mechanism; the clamping mechanism is arranged on the upper moving mechanism, and the tested badminton racket is clamped by the clamping mechanism; the positioning seat is arranged below the lower moving mechanism in a vertically movable manner, and the loading hammer is supported on the positioning seat; the vibration sensor is arranged on the loading hammer; when the mechanical property is tested, a test point on the tested badminton racket faces to the center of the loading hammer, the positioning seat moves upwards until the lifting hook on the loading hammer is higher than the racket surface, the positioning seat moves downwards, the loading hammer is separated from the support of the positioning seat to be hooked on the badminton racket, the loading hammer is knocked, the test point on the racket is loaded, and the vibration sensor transmits vibration information of the test point.
The technical scheme is further designed as follows: the frame comprises a base, a connecting seat and a lower guide rail, wherein two parallel connecting seats and two parallel lower guide rails are mutually and perpendicularly connected to form a rectangular frame, and the rectangular frame is arranged at the upper end of the base.
One preferable scheme of the technical scheme is as follows: the lower moving mechanism comprises a lower bracket, a lower rack, a lower gear, a lower rotating shaft and a rocker arm unit; the lower support comprises a lower sliding seat and a lower connecting seat, the two parallel lower sliding seats and the two parallel lower connecting seats are mutually and vertically connected to form a rectangular frame, the distance between the two lower sliding seats is matched with the distance between the two lower guide rails, a lower guide groove is formed between the two lower sliding seats, and the lower support moves along the lower guide rails through the jogging of the lower guide grooves and the lower guide rails; at least two parallel lower rotating shafts are arranged on each lower sliding seat, the end parts of the lower rotating shafts corresponding to the inner sides of the sliding seats are connected with lower gears, the end parts of the at least one lower rotating shaft corresponding to the outer sides of the sliding seats are connected with a rocker arm unit, a lower rack is arranged at the lower end of each lower guide rail, and the lower rack is movably supported on the base through meshing transmission with the corresponding gears.
The upper moving mechanism comprises an upper bracket, an upper rack, an upper gear, an upper rotating shaft and a rocker arm unit; the upper bracket comprises an upper sliding seat and an upper connecting seat, wherein the two parallel upper sliding seats and the two parallel upper connecting seats are mutually and vertically connected to form a rectangular frame, the interval between the two upper sliding seats is matched with the interval between the two lower connecting seats, a first upper guide groove is formed between the two lower connecting seats, and the upper bracket moves along the first upper guide groove by being embedded in the first upper guide groove; at least two parallel upper rotating shafts are arranged on each lower connecting seat, the end part of the lower rotating shaft corresponding to the inner side of the lower connecting seat is connected with a lower gear, the end part of the lower rotating shaft corresponding to the outer side of the lower connecting seat is connected with a rocker arm unit, an upper rack is arranged at the lower end of each upper sliding seat, and the upper support is movably supported on the lower support through the meshing transmission of the racks and the corresponding gears.
The clamping mechanism comprises clamping bases, clamping frames, nuts and a screw rod, wherein the two clamping bases can be arranged on the upper support in a relatively sliding manner, two clamping frames and a nut are respectively arranged on opposite sides and lower ends of the two clamping bases, threads of the nuts at lower ends of the two clamping bases are opposite in rotation direction, external threads which are respectively matched with the nuts at lower ends of the two clamping bases in different rotation directions are arranged on the screw rod, two ends of the screw rod are rotatably supported on the upper support, the screw rod is respectively in threaded connection with the corresponding nuts through the external threads in different rotation directions, one end of the screw rod penetrates through the upper support, one end of the screw rod is connected with a rocker arm unit, and the screw rod rotates to drive the two clamping bases to relatively slide in opposite directions or in opposite directions through the nuts, so that the clamping frames clamp the tested badminton racket or the unclamped badminton racket.
The rocker unit comprises a rocker disc and a rocker connected to the rocker disc.
The sliding seat and the lower connecting seat are respectively provided with a locking screw, the locking screws are positioned on the outer sides of the lower sliding seat or the lower connecting seat, and the end parts can be tightly abutted on the outer side surfaces of the lower guide rail or the upper sliding seat.
Another preferable scheme of the technical scheme is as follows: the lower moving mechanism comprises a lower sliding seat provided with a lower guide groove and a first upper guide groove, the lower guide groove is positioned at the lower part of the lower sliding seat, the first upper guide groove is positioned at the upper part of the lower sliding seat, the setting directions of the lower guide groove and the first upper guide groove are mutually perpendicular, and the lower sliding seat is in sliding connection with the lower guide rail on the frame through the lower guide groove.
The upper moving mechanism comprises upper sliding seats provided with first upper guide rails and second upper guide rails, the upper sliding seats are provided with two upper sliding seats, the two upper sliding seats are connected to the lower sliding seat in a sliding manner through the first upper guide rails and the embedded sliding of the first upper guide grooves, the sliding direction of the upper sliding seats is perpendicular to the sliding direction of the lower sliding seat relative to the frame, the two upper sliding seats and the two first upper guide rails form a rectangular frame, and at least a space for a loading hammer to pass through is reserved between the two upper sliding seats and the two first upper guide rails.
The clamping mechanism comprises two clamping seats, clamping frames and an electric push rod, wherein the two clamping seats are provided with second upper guide grooves, the second upper guide grooves are slidably connected with the second upper guide rails on the upper moving mechanism, the two clamping seats are arranged oppositely, the four clamping frames are arranged on the two clamping seats along the racket face profile, the clamping frames are provided with clamping openings towards one end of the racket face inside, one end of each air cylinder is fixed on one upper sliding seat, and the other end of each air cylinder is fixed on one clamping seat.
The lower sliding seat is provided with locking screw holes corresponding to the lower guide groove and the groove wall of the first upper guide groove, the outer sides of the locking screw holes are provided with locking screws, and the ends of the locking screws can be tightly abutted against the outer side face of the lower guide rail or the outer side face of the first upper guide rail.
The positioning seat is arranged on the lifting mechanism and moves up and down along with the lifting mechanism; the lifting mechanism comprises a gear transmission unit and a lifting screw, wherein the gear transmission unit comprises a motor, a driving gear and a driven gear, the center of the driven gear is provided with a screw hole matched with the lifting screw, the driving gear is fixedly connected to a rotating shaft of the motor, the motor and the driven gear are respectively fixedly and rotatably connected to a base, the lifting screw is spirally connected to the screw hole in the center of the driven gear, and the upper end of the lifting screw is connected with a positioning seat; when the motor is meshed with the driving gear to drive the driven gear to rotate, the lifting screw drives the positioning seat to move up and down.
At least the lower sliding seat and the lower guide rail corresponding to one side of the moving direction of the lower sliding seat are respectively provided with scale marks and scale rules, and at least the lower connecting seat and the upper sliding seat corresponding to one side of the moving direction of the upper sliding seat are respectively provided with scale marks and scale rules.
The loading hammer comprises a hammer body and a hammer rod, wherein the hammer body is in an inverted cone shape, the upper end of the hammer rod is provided with the lifting hook, and the lower end of the hammer rod is connected to the central position of the upper end of the hammer body. .
The invention has the following beneficial effects:
1) According to the invention, the up-and-down moving mechanism moves relative to the loading hammer, so that the test of any test point on the racket is facilitated; the lifting mechanism is added to drive the positioning seat to move so that the loading hammer loses support and is hooked on the test point of the racket by the lifting hook, and the loading hammer is very conveniently connected with the racket; the vibration source is formed by knocking the loading hammer to load the test point, so that the loading device is very simple, practical, easy to implement and operate, and more importantly, the loading force required by the mechanical property test can be accurately formed at the designated position.
2) The upper and lower moving mechanisms and the clamping mechanism are respectively driven by the gear, the rack transmission mechanism and the screw nut to form a spiral, the transmission mechanism is driven to move by the rotation of the upper and lower rocker arms and the rotating arm, and the moving stroke of the moving mechanism can be finely adjusted by the arm length of the rocker arms or the rotating arm, so that the loading hammer (namely the detection point) is positioned more accurately relative to the upper and lower moving mechanisms.
3) The invention is provided with the scale marks and the scales on the upper and lower moving mechanisms, and can measure the distance moved by the upper and lower moving mechanisms, thereby being capable of accurately positioning the test points to be tested on the badminton racket.
Drawings
Fig. 1 is a front view of a testing apparatus according to a first embodiment of the present invention.
Fig. 2 is a top view of the test apparatus of fig. 1 with the upper movement mechanism removed.
FIG. 3 is a cross-sectional view of the test device of FIG. 1 at the position A-A shown in FIG. 2.
Fig. 4 is a cross-sectional view of the device B-B shown in fig. 2.
Fig. 5 is a top view of the test device shown in fig. 1.
FIG. 6 is a top view of the test device of FIG. 1 with a guide bar and guide block added thereto. .
Fig. 7 is a top view corresponding to a testing device according to a second embodiment of the present invention.
FIG. 8 is a schematic three-dimensional structure of a test apparatus according to a third embodiment of the present invention.
Fig. 9 is a top view of the testing device shown in fig. 8.
In the above figures: 1-rack, 11-base, 111-rack, 12-connecting seat, 13-lower rail, 2-lower moving mechanism, 21-lower rack, 22-lower rack, 23-lower gear, 24-lower slide seat, 241-lower guide groove, 25-lower connecting seat, 251-first upper guide groove, 26, 36-lock screw, 27-lower rotating shaft, 271-lower bearing, 28, 38, 45-rocker arm unit, 281, 381, 451-rocker arm tray, 282, 382, 452-rocker arm, 3-upper moving mechanism, 31-upper rack, 32-upper rack, 33-upper gear, 331-lower rotating shaft, 332-lower rocker arm, 34-upper slide seat, 341-second upper guide groove, 342-supporting seat, 35-upper connecting seat, 37-upper rotating shaft, 371-upper bearing, 391-first upper guide rail, 39-second upper guide rail, 4-clamping mechanism, 41-clamping seat, 42-clamping frame, 43-screw, 44-nut, 46-bearing seat, hammer-fixing seat, 48-electric push rod, 49-guide rod, 5-hammer-guide rod, 491, 5-slide seat, 71-lifting hook, 711, driving mechanism, and driving mechanism, 712-driving gear, 713-driven gear, 714-bearing, 715-bearing seat, 72-lifting screw.
Detailed Description
Example 1
As shown in fig. 1, the mechanical property testing device of the present embodiment includes a frame 1, a lower moving mechanism 2, an upper moving mechanism 3, a clamping mechanism 4, a loading hammer 5, a vibration sensor (not shown), a positioning seat 6, and a positioning seat lifting mechanism 7. The clamping mechanism 4 is used for clamping the tested badminton racket, the clamping mechanism 4 is arranged on the upper moving mechanism 3 which can slide relative to the lower moving mechanism 2, the lower moving mechanism 2 can be arranged on the frame in a sliding way relative to the frame 1, and the sliding directions of the upper moving mechanism and the lower moving mechanism are mutually perpendicular, so that the clamping mechanism 4 for clamping and fixing the tested badminton racket can move along with the upper moving mechanism 3 and the lower moving mechanism 2 at the same time to form plane movement. The positioning seat 6 is arranged below the lower moving mechanism 2 in a vertically movable manner, and the loading hammer 5 is positioned on the positioning seat 6 and moves up and down together with the positioning seat 6 along with the lifting of the lifting mechanism 7. If the mechanical property test is to be carried out on the badminton racket, a test point on the tested badminton racket is opposite to the center position of the loading hammer 5, the positioning seat 6 moves upwards with the loading hammer 5 until the lifting hook on the loading hammer 3 is higher than the racket surface, then the positioning seat 6 moves downwards, the loading hammer 5 is separated from the positioning seat 6 to enable the lifting hook of the loading hammer 5 to be hooked and connected on the racket surface, the loading hammer 5 is knocked, the test point on the badminton racket is loaded, and vibration information of the test point is acquired and transmitted through the vibration sensor, so that the mechanical property test on the badminton racket is completed.
In this embodiment, the rack 1 includes a base 11, a connecting seat 12 and a lower guide rail 13, where the base 11, the connecting seat 12 and the lower guide rail 13 are all provided with two, the two connecting seats 12 are parallel to each other and are respectively connected to the upper end of the base 11, the two lower guide rails 13 are arranged in parallel, and two ends of each lower guide rail 13 are respectively connected to the ends of the connecting seat 12 perpendicularly, and the lower guide rail and the connecting seat form a rectangular frame. The loading hammer 5 and the positioning seat 6 are positioned inside the rectangular frame, and the lifting mechanism 7 is fixed on a base 11 through a bracket 111, so that the movement of the whole device and the positioning of the loading hammer 5 are facilitated.
As shown in fig. 2 and 3, the lower moving mechanism 2 includes a lower bracket 21, a lower rack 22, a lower gear 23, a lower rotating shaft 27 and a rocker unit 28, the lower bracket 21 includes a lower sliding seat 24 and a lower connecting seat 25, the two lower sliding seats 24 are arranged in parallel, the two lower connecting seats 25 are vertically connected to the upper ends of the two lower sliding seats 24, and the space between the lower sliding seats 24 is adapted to the space between the two lower guide rails 13 on the frame, so as to form a rectangular frame formed by the lower connecting seats and the lower sliding seats. A lower guide groove 241 is formed between the two parallel lower slide bases 24, and the lower bracket 21 moves along the lower guide rail 13 by the engagement of the lower guide groove 241 on the lower slide base 24 and the lower guide rail 13. A lower rack 22 is provided at the lower end of each lower rail 13, a lower shaft 27 is rotatably supported in a corresponding hole of the lower slide seat 24 through a lower bearing 271, and is axially positioned by a shoulder and a bearing cover on the lower shaft 27, a lower gear 23 is connected to an end of the lower shaft 27 corresponding to the inner side of the lower slide seat 24, the two lower gears 23 are disposed in parallel at the same height on the inner side of the lower slide seat 24 and are respectively engaged with the racks 22 at the lower end of the lower rail 13, and the lower bracket 21 is movably supported on the frame 1 by such engagement. A rocker unit 28 is connected to the end of the lower rotating shaft 27 corresponding to the outer side of the lower sliding seat 24, the rocker unit 28 comprises a rocker disc 281 and a rocker 282, the rocker disc 281 is connected to the outer side end of the rotating shaft 27, the rocker 282 is connected to the lower rocker disc 281, and the rocker unit 28 and the lower gear 23 are respectively located on the outer side and the inner side of the lower bracket 21. The rocker arm 28 is rocked, the lower gear 23 is driven to rotate by the lower rotating shaft 27, and the lower rack 22 and the lower gear 23 are meshed to drive the lower bracket 21 to slide along the lower guide rail 13.
In order to fix the lower moving mechanism 2 at a certain position, the lower moving mechanism 2 further comprises a lower locking screw 26, the lower locking screw 26 is screwed on at least one lower sliding seat 24, the lower locking screw 26 is screwed when the lower moving mechanism 2 moves to a set position, and the end part of the lower locking screw 26 is abutted against the outer side surface of the lower guide rail 13, so that the lower moving mechanism is positioned on the frame 1.
Referring to fig. 4 and 5, the upper moving mechanism 3 includes an upper bracket 31, an upper rack 32, an upper gear 33, and an upper rotating shaft 37. The upper bracket 31 comprises an upper sliding seat 34 and an upper connecting seat 35, and the two parallel upper sliding seats 34 are vertically connected with the two parallel upper connecting seats 35 to form a rectangular frame. The first upper guide groove 251 is formed between the two parallel lower connecting seats 25, the upper bracket 31 moves along the lower bracket 21 by the embedding of the first upper guide groove 251 and the upper sliding seat 34, and the sliding direction is perpendicular to the sliding direction of the lower bracket 21 relative to the frame 1. The two upper gears 33 are rotatably connected to the lower connecting seat 25 through an upper rotating shaft 37 and an upper bearing 371 respectively, and are positioned at the inner side of the lower connecting seat 25 and are arranged in parallel at the same height, and the upper rotating shaft 37 is axially positioned by a shaft shoulder and a bearing seat 372 on the upper rotating shaft 37, a bearing cover 373 and a spring bayonet 374. The lower ends of the two upper sliding seats 34 are respectively connected to upper racks 32, and each upper rack 32 is engaged with two upper gears 33 on the corresponding sides, and by this engagement, the upper bracket 31 is movably supported on the lower moving mechanism 2. A rocker unit 38 is connected to the end of the upper rotating shaft 37 corresponding to the outer side of the lower connecting seat 25, the rocker unit 38 includes a rocker disc 381 and a rocker 382, the rocker disc 381 is connected to the outer side end of the rotating shaft 37, the rocker 382 is connected to the rocker disc 381, and the rocker unit 38 and the upper gear 33 are located at the outer side and the inner side of the upper bracket 31, respectively. The rocking arm 382 drives the upper gear 33 to rotate through the upper rotating shaft 37, and drives the upper bracket 31 to slide along the lower connecting seat 25 through the engagement of the upper rack 32 and the upper gear 33.
Similarly, in order to fix the upper moving mechanism 3 at a certain position, the upper moving mechanism 3 further includes an upper locking screw 36, the upper locking screw 36 is screwed to the lower connecting seat 25, and when the upper moving mechanism needs to be fixed at a certain position, the locking screw 36 is screwed, and one end portion thereof abuts against the outer side of the upper sliding seat 34, so that the upper bracket 31 cannot move relative to the lower moving mechanism 2.
The clamping mechanism 4 is movably arranged on the upper moving mechanism 3 and comprises clamping seats 41, clamping frames 42, nuts 44 and a screw 43, wherein the two clamping seats 41 are relatively and slidably arranged on the upper bracket 31, in the embodiment, a second upper guide groove 341 is arranged on the inner side of the upper sliding seat 34 of the upper bracket 31, and the two clamping seats 41 are correspondingly embedded on the second upper guide groove 341 to be slidably arranged on the upper bracket; two kinds of threads with different rotation directions are axially distributed on the screw 43 and are respectively in spiral connection with nuts 44 with corresponding rotation directions on the lower end surfaces of the two clamping seats 41, and two ends of the screw 43 are respectively rotatably supported on the two upper connecting seats 35; two clamping frames 42 are arranged on each clamping seat 41, and the positions of the two clamping frames 42 are matched with corresponding clamping points on the racket frame and are respectively arranged on opposite sides of the two connecting seats 41. Further, a rocker unit 45 composed of a rocker plate 451 and a rocker 452 is provided at one end of the screw 43, the rocker plate 451 is connected to the shaft end of the screw 43, and the rocker 452 is connected to the rocker plate 451. When the rocker 452 is rotated to drive the screw 45 to rotate and enable the two clamping seats 41 to move in opposite directions, the two clamping seats 41 are mutually close until the clamping frames 42 on the two clamping seats 41 clamp the racket frame, and the tested racket is clamped on the testing device; when the swing arm 452 is rotated, the driving screw 43 rotates to move the two clamping bases 41 away from each other, so that the clamping bases 41 are away from each other and the clamped badminton racket is released. The screw 43 is located near one side of the clamping seats 41 to facilitate the loading hammer to pass through from the middle of the position between the two clamping seats 41.
As shown in fig. 6, a guide rod 49 may be further disposed at the other side of the clamping seat opposite to the screw 43, the guide rod 49 is slidably connected to the clamping seat through a sliding seat 491 disposed on the lower end surface of the clamping seat 41, two ends of the guide rod 49 are respectively rotatably connected to the two upper connecting seats 35, and the clamping seat moves along the upper bracket 31 through cooperation of the guide rod 49 and the sliding seat 491.
The loading hammer 5 comprises a hammer body 51 and a hammer rod 52, wherein the hammer body 51 is in an inverted cone shape, the upper end of the hammer rod 52 is provided with a lifting hook 53, and the lower end of the hammer rod is connected to the center of the upper end of the hammer body 51. The positioning seat 6 is provided with a conical slotted hole matched with the hammer body 51, and the loading hammer 5 is positioned on the positioning seat 6 by being placed in the conical slotted hole. The lower end of the positioning seat 6 is connected with a lifting mechanism 7.
The lifting mechanism 7 includes a gear transmission unit 71 and a lifting screw 72; the gear transmission unit 71 includes a motor 711, a driving gear 712, and a driven gear 713. The center of the driven gear 713 is provided with a screw hole matched with the lifting screw 72, the motor 711 and the driven gear 713 are respectively fixed and rotated on the bracket 111, the driving gear 712 is fixed on the rotating shaft of the motor 711, the further lifting mechanism 7 further comprises a bearing 714 and a bearing seat 715, the bearing seat 715 is fixed on the bracket 111, the driven gear 713 is rotatably supported on the bearing seat 715 through the bearing 714, the lifting screw 72 is in screw connection with the screw hole in the center of the driven gear 713, and the upper end is connected with the positioning seat 6. When the motor drives the gear mechanism to rotate, the driving gear 712 is meshed with the driven gear 713, the lifting screw 72 moves up and down in the axial direction to drive the positioning seat 6 to move up and down, the hammer body 51 moves up and down along with the positioning seat 6, the hammer body 51 moves up along with the positioning seat 6, until the lifting hook 53 at the upper end of the hammer rod 52 is higher than the racket surface, at the moment, the rotating direction of the gear mechanism is changed, the lifting screw moves down to drive the positioning seat 6 and the loading hammer 5 to move down, the lifting hook 53 at the upper end of the hammer rod is hooked on the racket surface in the moving process, and the loading hammer 5 is separated from the positioning seat 6 to be in a free state along with the lifting hook. The loading hammer body 51 hooked on the racket surface is knocked to realize loading of the test point. Thus, the racket is moved in a plane by the combined movement of the lower moving mechanism 2 and the upper moving mechanism 3, any detection point on the racket can be moved to the center position of the loading hammer 5 on the positioning seat 6 relatively, the loading hammer 5 is hooked on the detection point, and the detection point is arranged on the racket surface or racket rod of the shuttlecock.
In order to better determine the detection point, the embodiment is provided with scale marks and scales on the up-down moving mechanism to determine the displacement amounts in two vertical directions. Specific: at least one side of the lower sliding seat 24 corresponding to the moving direction of the lower sliding seat 24 and the lower guide rail 13 are respectively provided with scale marks and scales to determine the moving distance of the lower sliding seat 24 relative to the lower guide rail 13; likewise, scale marks and scales are provided on at least one side corresponding to the moving direction of the upper slider 34 and the lower link 25, respectively, to determine the moving distance of the upper slider 34 with respect to the lower link 25. Of course, the scale marks and the scale can also be arranged in reverse, that is: scale marks are provided on the lower rail 13 and the lower link seat 25, and scales are provided on the lower slide seat 24 and the upper slide seat 34. One preferred scale arrangement is that when the center of the badminton racket on the clamping mechanism 4 is opposite to the center of the hammer body 51 of the loading hammer 5, the 0 scale on the scale is opposite to the scale mark, and the 0 scale is symmetrically distributed with the center as the center.
Example two
As shown in fig. 7, this embodiment is basically the same as the above embodiment except that the clamping mechanism 4 of this embodiment also includes the clamping seat 41, the clamping frame 42, the nut 44 and the screw 43, but the screw 43 is a single-handed screw, one of the two clamping seats 41 is slidably disposed in the corresponding second upper guide groove 341 inside the upper slide seat 34, the other clamping seat 41 is fixed to the upper slide seat 34, the nut 44 is connected to the lower end face of the clamping seat 41 slidably disposed on the upper slide seat 34, one end of the screw 43 is supported on an upper connection seat 35 in the upper bracket 31, the other end is supported on the screw fixing seat 47, and the fixing seat 47 is connected to the lower end face of the clamping seat 41 fixed to the upper slide seat 34. When the screw 43 rotates, the nut 44 is driven to move axially by being meshed with the nut 44, so that the clamping seat 41 slidably provided on the upper slide seat 34 moves in a direction approaching the clamping seat 41 fixed on the upper slide seat 34 or in a direction moving away from the clamping seat 41 fixed on the upper slide seat 34, thereby causing the clamping frame 42 on the clamping seat 41 to clamp the badminton racket or unclamp the clamped badminton racket.
Other structures of this embodiment are the same as those of the first embodiment and will not be described again.
Example III
As shown in fig. 8 and 9, the present embodiment has the same basic structure as the above embodiment, and is mainly composed of a frame 1, a lower moving mechanism 2, an upper moving mechanism 3, a clamping mechanism 4, a loading hammer 5, a vibration sensor, a positioning seat 6 and a positioning seat lifting mechanism 7, but the specific structures of some mechanisms are different.
The frame 1 comprises a base 11, a connecting seat 12 and lower guide rails 13, and the two lower guide rails 13 are fixed on the base 11 through the connecting seat 12.
The lower moving mechanism 2 comprises a lower sliding seat 24 and a locking screw (not shown), the lower sliding seat 24 is arranged on two parallel lower guide rails 13 on the frame 1 in a sliding way, and two lower sliding seats 24 are respectively arranged on two identical axial positions of the two lower guide rails 13; the lower sliding seat 24 is cube-shaped, the lower part of the lower sliding seat is provided with a lower guide groove (not shown) matched with the lower guide rail 13, the upper part of the lower sliding seat is provided with a first upper guide groove (not shown) in the vertical direction of the lower guide groove, and the lower moving mechanism 2 is connected to the frame 1 in a sliding manner by penetrating the lower guide groove on the lower sliding seat 24 into the lower guide rail 13. At least one lower sliding seat 24 is provided with a locking screw hole corresponding to the groove wall of the lower guide groove, the locking screw is screwed in the locking screw hole, and the end part of the locking screw is tightly abutted against the lower guide rail 13, so that the lower sliding seat 24 is fixed at an axial position of the lower guide rail 13.
The upper moving mechanism 3 includes an upper sliding seat 34, a first upper guide rail 391, a second upper guide rail 39 and a locking screw (not shown), the upper sliding seat 34 is rectangular plate-shaped, two supporting seats 342 are respectively arranged on the upper end face and the lower end face of each upper sliding seat 34, and the two parallel arranged first upper guide rails 391 and second upper guide rails 39 are respectively connected with the supporting seats 342 on the lower end face and the upper end face of the corresponding upper sliding seat 34 through two ends. The upper moving mechanism 3 is slidably connected to the lower moving mechanism 2 through two first upper guide rails in a first upper guide groove in the lower sliding seat 24 of the lower moving mechanism 2, so that the upper moving mechanism 3 is slidably connected to the lower moving mechanism 2. At least one lower sliding seat 24 is provided with a locking screw hole corresponding to the groove wall of the first upper guide groove, the locking screw is screwed in the locking screw hole, and the end part of the locking screw is tightly abutted against the first upper guide rail 391, so that the upper moving mechanism 3 is fixed on an axial position of the first upper guide rail.
The clamping mechanism 4 comprises clamping bases 41, clamping frames 42, supporting seats 44 and electric push rods 48, the clamping bases 41 are of a flat plate structure, two clamping frames 42 are arranged on the upper end face of each clamping base 41, two supporting seats 46 are arranged on the lower end face of each clamping base 41, second upper guide grooves (not shown) are formed in the supporting seats 46, the aperture and the space of each second upper guide groove are respectively matched with the diameter of each second upper guide rail 39 in the upper moving mechanism 3 and the space of each second upper guide rail 39, one clamping base 41 is fixed on each second upper guide rail 39, one clamping base 41 is connected to the corresponding second upper guide rail 39 in a sliding mode, one end of each electric push rod 48 is connected to the corresponding slidable clamping base 41, the other end of each electric push rod 48 is connected to the corresponding upper sliding base 34, and when the electric push rods work, the slidable clamping bases 41 are driven to slide along the corresponding second upper guide rails and move oppositely or move oppositely to the fixed clamping bases 41, so that the clamping frames 42 on the clamping bases 41 clamp or unclamp the clamped feathers.
The settings of the loading hammer 5, the vibration sensor (not shown), the positioning seat 6, and the positioning seat lifting mechanism 7 in this embodiment are the same as those in embodiment 1 described above, and will not be repeated. In the same way, the badminton racket moves in a plane through the lower moving mechanism 2 and the upper moving mechanism 3, so that any detection point on the racket moves to the position of the positioning seat 6 relatively, a lifting hook at the upper end of a hammer rod of the loading hammer 5 drops and is hooked on the detection point, the test point on the racket is loaded by knocking the loading hammer 5, and the vibration sensor acquires and transmits vibration information of the test point, so that the mechanical property test of the badminton racket is completed.
Claims (10)
1. Mechanical property testing arrangement of racket, its characterized in that: the device comprises a frame, a lower moving mechanism, an upper moving mechanism, a clamping mechanism, a positioning seat, a vibration sensor and a loading hammer provided with a lifting hook; the lower moving mechanism can be arranged on the rack in a sliding manner relative to the rack; the upper moving mechanism can be arranged on the lower moving mechanism in a sliding manner relative to the lower moving mechanism, and the sliding direction is vertical to the sliding direction of the lower moving mechanism; the clamping mechanism is arranged on the upper moving mechanism, and the tested badminton racket is clamped by the clamping mechanism; the positioning seat can be arranged below the lower moving mechanism in a vertically movable way, a conical slotted hole matched with the loading hammer is formed in the positioning seat, and the loading hammer is positioned and supported on the positioning seat by being arranged in the conical slotted hole; the vibration sensor is arranged on the loading hammer;
the frame comprises a base, a connecting seat and a lower guide rail, wherein the two parallel connecting seats and the two parallel lower guide rails are mutually and vertically connected to form a rectangular frame which is arranged at the upper end of the base;
the lower moving mechanism comprises a lower bracket, a lower rack, a lower gear, a lower rotating shaft and a rocker arm unit; the lower support comprises a lower sliding seat and a lower connecting seat, the two parallel lower sliding seats and the two parallel lower connecting seats are mutually and vertically connected to form a rectangular frame, the distance between the two lower sliding seats is matched with the distance between the two lower guide rails, a lower guide groove is formed between the two lower sliding seats, and the lower support moves along the lower guide rails through the jogging of the lower guide grooves and the lower guide rails; at least two parallel lower rotating shafts are arranged on each lower sliding seat, the end parts of the lower rotating shafts corresponding to the inner sides of the sliding seats are connected with lower gears, the end parts of the at least one lower rotating shaft corresponding to the outer sides of the sliding seats are connected with a rocker arm unit, a lower rack is arranged at the lower end of each lower guide rail, and the lower rack is movably supported on the base through meshing transmission with the corresponding gears;
the upper moving mechanism comprises an upper bracket, an upper rack, an upper gear, an upper rotating shaft and a rocker arm unit; the upper bracket comprises an upper sliding seat and an upper connecting seat, wherein the two parallel upper sliding seats and the two parallel upper connecting seats are mutually and vertically connected to form a rectangular frame, the interval between the two upper sliding seats is matched with the interval between the two lower connecting seats, a first upper guide groove is formed between the two lower connecting seats, and the upper bracket moves along the first upper guide groove by being embedded in the first upper guide groove; at least two parallel upper rotating shafts are arranged on each lower connecting seat, the end part of the lower rotating shaft corresponding to the inner side of the lower connecting seat is connected with a lower gear, the end part of the lower rotating shaft corresponding to the outer side of the lower connecting seat is connected with a rocker arm unit, the lower end of each upper sliding seat is provided with an upper rack, and the upper bracket is movably supported on the lower bracket through the meshing transmission of the racks and the corresponding gears;
when the mechanical property is tested, a test point on the tested badminton racket faces to the center of the loading hammer, the positioning seat moves upwards until the lifting hook on the loading hammer is higher than the racket surface, the positioning seat moves downwards, the loading hammer is separated from the support of the positioning seat to be hooked on the badminton racket, the loading hammer is knocked, the test point on the badminton racket is loaded, and the vibration sensor transmits vibration information of the test point.
2. The mechanical property testing device for a badminton racket according to claim 1, wherein: the clamping mechanism comprises clamping bases, clamping frames, nuts and a screw rod, wherein the two clamping bases can be arranged on the upper support in a relatively sliding manner, two clamping frames and a nut are respectively arranged on opposite sides and lower ends of the two clamping bases, threads of the nuts at lower ends of the two clamping bases are opposite in rotation direction, external threads which are respectively matched with the nuts at lower ends of the two clamping bases in different rotation directions are arranged on the screw rod, two ends of the screw rod are rotatably supported on the upper support, the screw rod is respectively in threaded connection with the corresponding nuts through the external threads in different rotation directions, one end of the screw rod penetrates through the upper support, one end of the screw rod is connected with a rocker arm unit, and the screw rod rotates to drive the two clamping bases to relatively slide in opposite directions or in opposite directions through the nuts, so that the clamping frames clamp the tested badminton racket or the unclamped badminton racket.
3. The mechanical property testing device for a badminton racket according to claim 2, wherein: the rocker unit comprises a rocker disc and a rocker connected to the rocker disc.
4. A mechanical property testing device for a badminton racket according to claim 3, wherein: the sliding seat and the lower connecting seat are respectively provided with a locking screw, the locking screws are positioned on the outer sides of the lower sliding seat or the lower connecting seat, and the end parts can be tightly abutted on the outer side surfaces of the lower guide rail or the upper sliding seat.
5. The mechanical property testing device for a badminton racket according to claim 4, wherein: at least the lower sliding seat and the lower guide rail corresponding to one side of the moving direction of the lower sliding seat are respectively provided with scale marks and scale rules, and at least the lower connecting seat and the upper sliding seat corresponding to one side of the moving direction of the upper sliding seat are respectively provided with scale marks and scale rules.
6. Mechanical property testing arrangement of racket, its characterized in that: the device comprises a frame, a lower moving mechanism, an upper moving mechanism, a clamping mechanism, a positioning seat, a vibration sensor and a loading hammer provided with a lifting hook; the lower moving mechanism can be arranged on the rack in a sliding manner relative to the rack; the upper moving mechanism can be arranged on the lower moving mechanism in a sliding manner relative to the lower moving mechanism, and the sliding direction is vertical to the sliding direction of the lower moving mechanism; the clamping mechanism is arranged on the upper moving mechanism, and the tested badminton racket is clamped by the clamping mechanism; the positioning seat can be arranged below the lower moving mechanism in a vertically movable way, a conical slotted hole matched with the loading hammer is formed in the positioning seat, and the loading hammer is positioned and supported on the positioning seat by being arranged in the conical slotted hole; the vibration sensor is arranged on the loading hammer;
the frame comprises a base, a connecting seat and a lower guide rail, wherein the two parallel connecting seats and the two parallel lower guide rails are mutually and vertically connected to form a rectangular frame which is arranged at the upper end of the base;
the lower moving mechanism comprises a lower sliding seat provided with a lower guide groove and a first upper guide groove, the lower guide groove is positioned at the lower part of the lower sliding seat, the first upper guide groove is positioned at the upper part of the lower sliding seat, the setting directions of the lower guide groove and the first upper guide groove are mutually perpendicular, and the lower sliding seat is connected to the rack in a sliding manner through the lower guide groove and the lower guide rail;
the upper moving mechanism comprises upper sliding seats provided with first upper guide rails and second upper guide rails, the upper sliding seats are provided with two upper sliding seats, the two upper sliding seats are connected to the lower sliding seat in a sliding manner through the embedding of the first upper guide rails and the first upper guide grooves, the sliding direction of the upper sliding seats is vertical to the sliding direction of the lower sliding seat relative to the frame, the two upper sliding seats and the two first upper guide rails form a rectangular frame, and at least a space for a loading hammer to pass through is reserved between the two upper sliding seats and the two first upper guide rails;
when the mechanical property is tested, a test point on the tested badminton racket faces to the center of the loading hammer, the positioning seat moves upwards until the lifting hook on the loading hammer is higher than the racket surface, the positioning seat moves downwards, the loading hammer is separated from the support of the positioning seat to be hooked on the badminton racket, the loading hammer is knocked, the test point on the badminton racket is loaded, and the vibration sensor transmits vibration information of the test point.
7. The mechanical property testing device for a badminton racket according to claim 6, wherein: the clamping mechanism comprises two clamping seats, clamping frames and an electric push rod, wherein the two clamping seats are provided with second upper guide grooves, the second upper guide grooves are slidably connected with the second upper guide rails on the upper moving mechanism, the two clamping seats are arranged oppositely, the four clamping frames are arranged on the two clamping seats along the racket face profile, the clamping frames are provided with clamping openings towards one end of the racket face inside, one end of each electric push rod is fixed on one upper sliding seat, and the other end of each electric push rod is fixed on one clamping seat.
8. The mechanical property testing device for a badminton racket according to claim 7, wherein: the lower sliding seat is provided with locking screw holes corresponding to the lower guide groove and the groove wall of the first upper guide groove, the outer sides of the locking screw holes are provided with locking screws, and the ends of the locking screws can be tightly abutted against the outer side face of the lower guide rail or the outer side face of the first upper guide rail.
9. The mechanical property testing device for a badminton racket according to claim 1 or 6, characterized in that: the positioning seat is arranged on the lifting mechanism and moves up and down along with the lifting mechanism; the lifting mechanism comprises a gear transmission unit and a lifting screw, wherein the gear transmission unit comprises a motor, a driving gear and a driven gear, the center of the driven gear is provided with a screw hole matched with the lifting screw, the driving gear is fixedly connected to a rotating shaft of the motor, the motor and the driven gear are respectively fixedly and rotatably connected to a base, the lifting screw is spirally connected to the screw hole in the center of the driven gear, and the upper end of the lifting screw is connected with a positioning seat; when the motor is meshed with the driving gear to drive the driven gear to rotate, the lifting screw drives the positioning seat to move up and down.
10. The mechanical property testing device for a badminton racket according to claim 1 or 6, characterized in that: the loading hammer comprises a hammer body and a hammer rod, wherein the hammer body is in an inverted cone shape, the upper end of the hammer rod is provided with the lifting hook, and the lower end of the hammer rod is connected to the central position of the upper end of the hammer body.
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| CN201810300621.XA CN108362582B (en) | 2018-04-04 | 2018-04-04 | Mechanical property testing device for badminton racket |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810300621.XA CN108362582B (en) | 2018-04-04 | 2018-04-04 | Mechanical property testing device for badminton racket |
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| CN108362582B true CN108362582B (en) | 2024-01-30 |
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| CN113281205B (en) * | 2021-04-01 | 2024-03-05 | 南京源威复合材料科技有限公司 | Automatic testing machine for hardness of middle tube of badminton racket |
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