CN107115636B - Overhead backstroke starting device and using method thereof - Google Patents
Overhead backstroke starting device and using method thereof Download PDFInfo
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- CN107115636B CN107115636B CN201710361490.1A CN201710361490A CN107115636B CN 107115636 B CN107115636 B CN 107115636B CN 201710361490 A CN201710361490 A CN 201710361490A CN 107115636 B CN107115636 B CN 107115636B
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B31/00—Swimming aids
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B5/00—Apparatus for jumping
- A63B5/08—Spring-boards
- A63B5/10—Spring-boards for aquatic sports
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/12—Arrangements in swimming pools for teaching swimming or for training
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2244/00—Sports without balls
- A63B2244/20—Swimming
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Abstract
The invention discloses a top-mounted backstroke starter and a using method thereof, which are used for backstroke item match and training of swimming, and comprise a zero setting gear shifter, a right belt wheel, a left belt wheel, a steel pipe, a sheath, a main support plate, a positioning ring and a right handle bolt assembly, wherein the top-mounted backstroke starter is characterized in that one end part of the steel pipe is provided with the right belt wheel, and one side corresponding to the right belt wheel is provided with the zero setting gear shifter on the steel pipe with a preset distance; the right handle bolt assembly comprises a main support plate, the cylindrical end of the zero setting gear shifting device is arranged in an inner hole of the main support plate of the right handle bolt assembly, a positioning ring is arranged on the other side of the main support plate, a sheath is arranged on the other side of the positioning ring and is positioned in the middle of the steel pipe, the principle and the structure are simple, and the starting pedal adopts trapezoidal large-interval straight grains; the overhead backstroke starting device has the characteristics of convenient zero adjustment, intuitive gear adjustment, firm installation, good manufacturability, good skid resistance and safe and convenient storage and transportation.
Description
Technical Field
The invention relates to the technical field of special equipment used in backstroke starting, in particular to a top-mounted backstroke starting device and a using method thereof.
Background
The backstroke starting device is used for backstroke event competition and training of swimming, and is special equipment used by backstroke athletes during backstroke starting. The top-mounted backstroke starting device is a device which is arranged on the top of a swimming starting table or on the top of a starting judging device. According to the regulations of the International Union of swimming and the Chinese swimming Association 'rules for swimming 2014-2018', the upper end surface of the pedal of the backstroke starting device is flush with the water surface of the swimming pool and is the zero position of the backstroke starting device; the pedal of the backstroke starter can be adjusted to a position from 4CM above the water surface to 4CM below the water surface. The backstroke starting device is mounted on the upper part of the starting platform, so that two problems occur: 1) the height of the water surface of each swimming pool from the ground is different; 2) the heights of the starting platforms matched with each swimming pool are different and are caused by factors such as the age, the execution standard, the manufacturer and the like); for the above reasons, the zero position must be adjusted first when installing the backstroke starter at each venue. The gear refers to that the upper end surface of the pedal of the backstroke starting device is flush with the water surface of the swimming pool, namely, the zero position is obtained, the backstroke starting device is displayed as 0, 1CM is +1 when the backstroke starting device ascends from the water surface, and 1CM is-1 when the backstroke starting device descends from the water surface. 4CM is 4CM when the water surface descends.
For the backstroke starter, relevant literature reports are reported in China, for example, the backstroke starter of the Chinese appearance patent with the publication number of CN303108511S is only innovatively designed in the aspect of appearance, is not newly designed in the aspect of structure, and is inconvenient to use. Internationally, only a & T Europe s.p.a. of italy, companies design and manufacture backstroke starters, and there are no companies or units to design and manufacture backstroke starters in china at present.
The backstroke starter used internationally is the backstroke starter designed and manufactured by a & T Europe s.p.a. The prior art has the following defects:
1) the zero adjustment is inconvenient: the zero position of the backstroke starter is the relative relation between the upper end surface of a pedal of the backstroke starter and the water surface of a swimming pool; zero setting of the existing backstroke starter is that two set screws are respectively arranged on a left belt wheel and a right belt wheel, the left belt wheel and the right belt wheel are respectively fixed on two ends of a rotating shaft steel pipe), when the zero setting is adjusted, the set screws on the left belt wheel and the right belt wheel are respectively loosened, and the left belt wheel and the right belt wheel are respectively adjusted, so that inconvenience is caused; the left belt wheel and the right belt wheel are respectively adjusted, so that the length of the left bearing belt and the length of the right bearing belt are inconsistent, and the starting pedal is inclined; and because the belt wheel is made of high polymer materials, the screw hole of the high polymer materials can be abraded by frequently adjusting the set screw, the belt wheel is fixed to have failure risk, and certain hidden danger is brought to backstroke events.
2) The gear adjustment is not intuitive: the gear adjustment display of the existing backstroke starting device is as follows: 4. 2, 0, -2, -4. The gear numbers 3, 1, -1 and-3 are lacked in the adjustment, the actual use is not intuitive, an operator needs to make logical deduction, and misoperation is easy to occur sometimes;
3) the installation is insecure, the manufacturability is poor: the existing backstroke starting device is arranged on a starting platform or a starting judging device, two parallel long holes with the length of 58mmX, the width of 8mmX and the depth of 22mm need to be processed on an installation plane, the manufacturability is poor, the matching and the transformation of the existing swimming venue starting platform are not facilitated, the field adaptability is poor, the processing manufacturability is poor, the construction is very inconvenient, and the size precision is not easy to ensure; the lower part of the backstroke starter is provided with two strip-shaped bulges which are distributed on the left side and the right side, and the strip-shaped bulges are inserted into two long holes processed on the mounting plane during mounting to play a role in fixing the backstroke starter, but the backstroke starter has a loosening phenomenon after mounting; because the instantaneous impact force generated by the two feet of the athlete is very large when the athlete starts, the phenomenon of looseness to a certain degree occurs in the use process;
4) the starting pedal has poor skid resistance: the anti-skid measure of the starting pedal of the existing backstroke starting device adopts a cylindrical convex dot matrix, and as the height of the cylindrical convex is only 1mm and the distance between the cylindrical convex is larger, when a player steps on the pedal, the embedding degree of deformation of the sole skin is lower, the anti-skid effect is poorer, and the anti-skid performance in water is poor;
5) the storage and transportation are unsafe and inconvenient: after the bearing belt of the existing backstroke starter is completely wound on the belt wheel, namely the starting pedal is retracted, the starting pedal is not fixed, so that the starting pedal is in a natural drooping state. When the backstroke starter is taken up, the starting pedal swings and shakes, and the backstroke starter is unsafe and inconvenient to package; the existing backstroke starter is packaged in soft packaging bags made of fiber cloth during transportation, and each backstroke starter is placed in each bag, so that mutual collision and storage and transportation are inconvenient to prevent.
Therefore, there is a need for a new top-mounted backstroke initiator and a method for using the same.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the overhead backstroke starter which has the advantages of convenient zero adjustment, intuitive gear adjustment, firm installation, good manufacturability, good skid resistance and safe and convenient storage and transportation, and the use method thereof, and the technical scheme for solving the technical problems is as follows:
the overhead backstroke starter is used for competition and training of backstroke projects and comprises a zero setting gear shifting device and a bearing part, wherein the bearing part comprises a right belt wheel, a left belt wheel, a steel pipe, a sheath, a main support plate, a positioning ring, a right handle bolt assembly, a left handle bolt assembly, a connecting rod, a granular rubber plate, a starting pedal and a bearing belt; a right belt wheel is arranged at one end of the steel pipe, and a zero-setting gear shifter is arranged on the steel pipe with a preset distance from one side corresponding to the right belt wheel; the right handle bolt assembly comprises a main support plate, the cylindrical end of the zero setting gear shifter is arranged in an inner hole of the main support plate of the right handle bolt assembly, a positioning ring is arranged on the other side of the main support plate, a sheath is arranged on the other side of the positioning ring and is positioned in the middle of the steel pipe, a left handle bolt assembly is arranged on one side of the sheath, and a left belt wheel is arranged at the position, away from the other side corresponding to the left handle bolt assembly, of a preset size; the right handle bolt assembly and the left handle bolt assembly respectively comprise a functional hook assembly, the left handle bolt assembly also comprises an auxiliary support plate, a connecting rod is arranged between the main support plate and the auxiliary support plate, and the functional hook assembly is arranged at the bottom positions of the front sides of the main support plate and the auxiliary support plate; the right belt wheel and the left belt wheel respectively comprise a bearing belt wheel groove, bearing belts with equal length are arranged in the bearing belt wheel grooves, and a starting pedal is arranged between the two bearing belts; the two ends of the starting pedal are provided with the particle surface rubber plates, and the middle part of the starting pedal is provided with anti-skid trapezoidal large-interval straight grains; a closed ring C is arranged on the outer side cylindrical surface of the positioning ring and is fixed on the steel pipe through a hexagon socket head cap screw A; a groove is formed in the end face of the main support plate on one side of the positioning ring, and a sealing ring B is arranged in the groove.
The zero-setting gear shifter comprises a metronome, a shell, a gear display window, a gear digital plate, a zero-setting display panel, a gear disc, a cylindrical pin, a closing plate A, a key, a gear disc sleeve, a steel ball A, a helical spring A, an inner hexagonal flat end set screw A, a limiting plate, a cross-shaped groove countersunk head screw C, a single toothed plate, a cross-shaped groove countersunk head screw D, a hexagon nut C, a helical spring B and a cylindrical head hexagonal screw B; a semi-closed cavity is arranged in the shell, a mounting hole is formed in one semi-closed side wall of the cavity, and a gear display window and a closed plate A are fixedly glued to the upper portion of the shell in sequence; the shell is arranged on the outer cylindrical surface of the steel pipe between the right belt pulley and the right handle bolt assembly through a mounting hole and is fixedly arranged on the side surface of the main support plate through six hexagon socket head cap screws B; the fluted disc sleeve is arranged in the shell, and 50 circular holes are uniformly distributed on the side surface of the fluted disc sleeve; the gear disc sleeve is arranged on the steel pipe in the shell through two cross recessed countersunk head screws C, and a gear disc component is sleeved on the gear surface outside the gear disc sleeve; the gear disc assembly comprises a gear digital plate, a zero setting display plate, a gear disc and a cylindrical pin, wherein the gear digital plate and the zero setting display plate are glued on the upper part of the gear disc, the cylindrical pin is arranged on the other side of the zero setting display plate on the upper part of the gear disc, and a single tooth of the gear disc is inserted between two gear teeth on the upper part of the gear disc sleeve; the key is arranged on the other side of the fluted disc sleeve and is in contact with the end face of the main supporting plate, the head of the key extends out of a square hole formed by the upper groove of the shell and the upper groove of the main supporting plate, the lower part of the key is connected with the single toothed plate through a cross recessed countersunk head screw D and a hexagon nut C, and the single tooth at the lower part of the single toothed plate is inserted between two teeth at the lower part of the fluted disc sleeve; the single toothed plate is provided with a limiting plate through a spiral spring B, and the limiting plate is positioned at the lower part of the rectangular hole in the main supporting plate; the lower part of the gear disc is concave, one end of the concave part is provided with a handle, the other end of the concave part is provided with a spring hole, the spring hole is provided with an inner hexagonal flat end set screw A, a spiral spring A is sleeved outside the inner hexagonal flat end set screw A, and the head of the spiral spring A is provided with a steel ball A which is in contact with the gear disc sleeve; the metronome is arranged in the hole on the side surface of the main support plate.
The metronome comprises a steel ball B, a top column, a sleeve, a spiral spring C, an inner hexagonal flat end set screw B and a pull sleeve; the sleeve is arranged in a side face hole of the main support plate, and a top column is arranged in the sleeve; one end of the top column is provided with a steel ball B, the other end of the top column is provided with a spiral spring C, and the other end of the spiral spring C is provided with an inner hexagonal flat end fastening screw B; the inner hexagonal flat end set screw B is in threaded connection with the sleeve; the outer circle surface of one end of the sleeve connected with the inner hexagonal flat end set screw B is connected with a pull sleeve through a thread; and the steel balls B are pressed in round holes uniformly distributed on the side surface of the fluted disc sleeve, and the number of the round holes is 50.
The right handle bolt assembly and the left handle bolt assembly respectively comprise a pressing sleeve, a limiting frame, a cylindrical head hexagon screw C, a sealing plate B, a cross groove countersunk head screw E, a handle bolt and a functional hook assembly; the left handle bolt assembly also comprises a gasket, an oilless sliding bearing and an auxiliary support plate, the auxiliary support plate is fixed on the steel pipe at the end part of the sheath through the oilless sliding bearing in the inner hole, and the gaskets are arranged at the two ends of the oilless sliding bearing; the right handle bolt assembly also comprises a main support plate, the front part of the main support plate is provided with a large hole, and the large hole is sleeved on the zero setting gear shifting device; the main support plate and the auxiliary support plate are connected and arranged at two ends of the connecting rod through two hexagon socket head screws C, and a sealing plate B is arranged outside the hexagon socket head screws C; the two limiting frames are connected and arranged at the rear parts of the main support plate and the auxiliary support plate through a socket head cap screw C; the two handle bolts sequentially penetrate through the vertical hole of the limiting frame, the mounting hole of the main support plate or the auxiliary support plate and the pressing sleeve arranged at the lower part of the mounting hole of the main support plate or the auxiliary support plate, and are connected with the foundation nut through the head part of the pressing sleeve; the functional hook component comprises a functional hook and a hexagon socket head cap screw D; the functional hook of the right handle bolt assembly is arranged at the bottom of the front side of the main support plate through three hexagon socket head screws D; the functional hook of the left-hand handle bolt assembly is arranged at the bottom of the front side of the auxiliary support plate through three hexagon socket head screws D; the functional hook comprises a V-shaped groove for placing the starting pedal.
The right belt wheel and the left belt wheel respectively comprise a belt wheel body, a belt pressing plate, a cross-shaped groove countersunk head screw A, a hexagon nut A, a closed ring A, a belt wheel decorative plate, a cross-shaped groove countersunk head screw B and a hexagon nut B; a flange is arranged on the side face of one end of the pulley body, a mounting hole is formed in the flange, the pulley body is fixed to two ends of the steel pipe through a cross groove countersunk head screw B and a hexagon nut B, a closed ring A is arranged at the head of the cross groove countersunk head screw B, and a pulley decorative plate is arranged in a stepped hole in the side face of the other end of the pulley body; the pulley body is provided with a bearing pulley groove, and one end of the bearing belt is fixed on the steel pipe and the pulley body through a belt pressing plate, a cross groove countersunk head screw A and a hexagon nut A.
The use method of the overhead backstroke starting device is used for competition and training of backstroke projects, and comprises the following steps:
s1, installing: the right handle bolt assembly and the left handle bolt assembly are connected and installed on a starting table of a swimming venue or a foundation nut of a starting judger on the upper part of the starting table by threads;
s2, zeroing: according to the regulations of the international swimming union or the Chinese swimming union, the zero setting gear shifting device is adjusted according to the height of the starting platform and the height of the water surface of the swimming pool, and the upper end surface of the starting pedal is ensured to be at the zero position of the water surface of the swimming pool;
s3, shifting: according to the regulations of the International swimming Union or the Chinese swimming Association, the zero setting gear shifter is adjusted to ensure a preset gear between the upper end surface of the starting pedal and the water surface 4CM and between the upper end surface of the starting pedal and the water surface 4 CM;
s4, storing: in the field of a natatorium, when the backstroke starting device arranged on the starting table is not used temporarily, the starting pedal is inserted into the functional hooks of the right handle bolt assembly and the left handle bolt assembly;
s5, transportation: using a special storage and transportation vehicle with a device for fixing the starting pedal.
The step S2 specifically includes the following sub-steps:
s21, the gear disc is axially pulled out by 10mm through a handle at the lower part of the gear disc, and when a two-character zero setting is displayed in a gear display window on the shell, the gear display window indicates that the gear disc is in a zero setting state;
s22, pressing down the key with the left hand to disengage the single tooth of the single tooth plate on the key from the fluted disc sleeve, rotating the right belt wheel with the right hand to wind or release the length of the bearing belt to adjust the lifting of the starting pedal, and releasing the key with the left hand after adjusting the starting pedal to a preset position;
s23, the gear disc is pushed inwards by 10mm axially through a handle at the lower part of the gear disc, so that the single teeth on the gear disc are meshed with the teeth of the gear disc sleeve, and when a number '0' is displayed in a gear display window on the shell, the gear is in a gear shifting state.
The step S3 specifically includes the following sub-steps:
s31, pressing the button with left hand to make the single tooth of the single tooth plate on the button disengage with the fluted disc sleeve;
and S32, rotating the right belt wheel by the right hand, winding or releasing the length of the bearing belt to adjust the starting pedal to lift, simultaneously rotating the gear number plate on the gear disc, stopping rotating the right belt wheel when reaching a preset gear, and stopping pressing the key by the left hand to finish gear shifting.
Compared with the prior art, the invention has the beneficial effects that: the top-mounted backstroke starter is used for backstroke project competition and training of swimming, and comprises a zero setting gear shifting device and a bearing part, wherein the bearing part comprises a right belt wheel, a left belt wheel, a steel pipe, a sheath, a main support plate, a positioning ring, a right handle bolt assembly, a left handle bolt assembly, a connecting rod, a granular rubber plate, a starting pedal and a bearing belt; by adopting a new principle and a simpler structural design, the starting pedal of the backstroke starting device can be set to be a zero position at any position, and the zero position is locked simply and reliably; adopt gear window to show digit gear, every shows a digit, only shows the corresponding digit of current gear at every turn, and is directly perceived simple, can show 9 gears altogether: +4, +3, +2, +1, 0, -1, -2, -3, -4; the backstroke starting device is connected with the starting platform or the starting judging device by threads; adopting trapezoidal large-interval straight grains; the use method of the overhead backstroke starter comprises the following steps: the overhead backstroke starting device is connected and installed on a starting platform of a swimming venue or a foundation nut of a starting judgment device on the upper part of the starting platform by adopting threads; adjusting a zero-setting gear-shifting device in the backstroke starting device according to the height of the starting platform and the height of the water surface of the swimming pool to ensure that the upper end surface of the starting pedal reaches the zero position of the water surface of the swimming pool; adjusting a zero-setting gear shifter in the backstroke starting device to ensure a preset gear between the upper end surface of a starting pedal and 4CM above the water surface and 4CM below the water surface; when the starting pedal is not used, the starting pedal is inserted into the functional hook; transporting by using a special storage vehicle with a device for fixing the starting pedal; the overhead backstroke starting device has the characteristics of convenient zero adjustment, intuitive gear adjustment, firm installation, good manufacturability, good skid resistance and safe and convenient storage and transportation.
Drawings
Fig. 1 is a schematic top view of the overhead backstroke starter of the present invention.
Fig. 2 is a schematic sectional structural view along the line a-a of the top-mounted backstroke starter of fig. 1 in the shift state.
Fig. 3 is a left-side view structural schematic diagram of the overhead backstroke starter.
Fig. 4 is a partially enlarged view of the top-mounted backstroke starter zero setting shifter zero setting state shown in fig. 2.
Fig. 5 is a schematic sectional structure view of the overhead type backstroke starter shown in fig. 2 along the line B-B.
Fig. 6 is a partial enlarged view of the rhythm device part I of the overhead type backstroke initiator shown in fig. 1.
Fig. 7 is a schematic sectional structure view of the top-mounted backstroke starter shown in fig. 3 along the line C-C.
Fig. 8 is a schematic view of the use state of the top-mounted backstroke starter of the embodiment 1 of the invention.
Fig. 9 is a schematic view of the use state of the top-mounted backstroke starter of the embodiment 2 of the invention.
In the drawings: 100. 200 parts of right belt wheel, 200 parts of left belt wheel, 201 parts of belt pressing plate, 202 parts of cross recessed countersunk head screw A,203 parts of hexagon nut A,204 parts of closed ring A,205 parts of belt wheel decorative plate, 206 parts of cross recessed countersunk head screw B, 207 parts of hexagon nut B, 300 parts of steel pipe, 301 parts of sheath, 302 parts of gasket, 303 parts of oilless sliding bearing, 304 parts of auxiliary support plate, 400 parts of zero setting gear changer, 401 parts of shell, 402 parts of gear display window, 403 parts of gear digital plate, 404 parts of zero setting display plate, 405 parts of gear disc, 406 parts of cylindrical pin, 407 parts of closed plate A, 408 parts of button, 409 parts of closed ring B, 410 parts of main support plate, 411 parts of closed ring C, 412 parts of positioning ring, 413 parts of cylindrical head screw A, 414 parts of gear disc sleeve, 415 parts of hexagon steel ball A, 416 parts of spiral spring A, 417 parts of inner hexagonal flat end fastening screw A, 418 parts of limiting plate, 419 parts of cross recessed countersunk head screw C, 420 parts of single toothed plate, 421D parts of recessed head, 422. the swimming pool comprises a hexagon nut C, 423, a spiral spring B, 424, a pressing sleeve, 425, a limiting frame, 460, a metronome, 461, a steel ball B, 462, a top column, 463, a sleeve, 464, a hexagon socket screw B, 465, a spiral spring C, 466, an inner hexagon flat end fastening screw B, 467, a pulling sleeve, 500, a right handle bolt component, 501, a hexagon socket head screw C, 502, a closing plate B, 503, a cross recessed countersunk head screw E, 504, a handle bolt, 600, a left handle bolt component, 700, a connecting rod, 800, a functional hook component, 801, a functional hook, 802, a hexagon socket head screw D, 803, a particle surface rubber plate, 900, a starting pedal, 901, a bearing belt, 1000, a top-mounted type backstroke starter, 1110, a starting table, 1111, a transverse gripper, 1112, a longitudinal gripper, 1120, a starting judger, 1130, a swimming timing touch plate, 1140 and a swimming pool water surface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 to 9 so that the public can better understand the implementation method of the present invention, and the specific implementation method of the present invention is as follows:
as shown in fig. 1, 2 and 3, the top-mounted backstroke starter is used for competition and training of backstroke projects and comprises a zero setting gear shifter 400 and a bearing part, wherein the bearing part comprises a right belt wheel 100, a left belt wheel 200, a steel pipe 300, a sheath 301, a main support plate 410, a positioning ring 412, a right handle bolt assembly 500, a left handle bolt assembly 600, a connecting rod 700, a grain rubber plate 803, a starting pedal 900 and a bearing belt 901; a right belt wheel 100 is arranged at one end part of the steel pipe 300, and a zero-setting gear shifter 400 is arranged on the steel pipe 300 with a preset distance from one side corresponding to the right belt wheel 100; the right handle bolt assembly 500 comprises a main support plate 410, the cylindrical end of the zero setting gear shifter 400 is arranged in an inner hole of the main support plate 410 of the right handle bolt assembly 500, a positioning ring 412 is arranged on the other side of the main support plate 410, a sheath 301 is arranged on the other side of the positioning ring 412 and is positioned in the middle of the steel pipe 300, a left handle bolt assembly 600 is arranged on one side of the sheath 301, and a left belt pulley 200 is arranged on the other side, corresponding to the left handle bolt assembly 600, at a preset size; the right handle bolt assembly 500 and the left handle bolt assembly 600 both comprise a functional hook assembly 800, the left handle bolt assembly 600 further comprises an auxiliary support plate 304, a connecting rod 700 is arranged between the main support plate 410 and the auxiliary support plate 304, and the functional hook assembly 800 is arranged at the bottom of the front side of the main support plate 410 and the auxiliary support plate 304; the right belt wheel 100 and the left belt wheel 200 both comprise bearing belt wheel grooves, bearing belts 901 with equal length are arranged in the bearing belt wheel grooves, and a starting pedal 900 is arranged between the two bearing belts 901; the two ends of the starting pedal 900 are provided with the particle surface rubber plates 803, and the middle part is provided with anti-skid trapezoidal large-interval straight grains; a closed ring C411 is arranged on the cylindrical surface of the outer side of the positioning ring 412 and is fixed on the steel pipe 300 through a hexagon socket head cap screw A413; the end surface of the main supporting plate 410 at one side of the positioning ring 412 is provided with a groove, and a closed ring B409 is arranged in the groove.
As shown in fig. 2, 4 and 5, the zero setting shifter 400 includes a metronome 460, a housing 401, a gear position display window 402, a gear position number plate 403, a zero setting display plate 404, a gear position dial 405, a cylindrical pin 406, a closing plate a407, a key 408, a gear plate sleeve 414, a steel ball a415, a coil spring a416, an inner hexagonal flat end set screw a417, a limit plate 418, a cross recessed countersunk head screw C419, a single toothed plate 420, a cross recessed countersunk head screw D421, a hexagonal nut C422, a coil spring B423, and a cylindrical hexagonal head screw B464; a semi-closed cavity is arranged in the shell 401, a mounting hole is formed in one semi-closed side wall of the cavity, and a gear display window 402 and a closing plate A407 are fixedly glued to the upper portion of the shell 401 in sequence; the shell 401 is arranged on the outer cylindrical surface of the steel pipe 300 between the right belt pulley 100 and the right handle bolt assembly 500 through a mounting hole, and is fixedly arranged on the side surface of the main support plate 410 through six hexagon socket head cap screws B464; the fluted disc sleeve 414 is arranged in the shell 401, and 50 circular holes are uniformly distributed on the side surface of the fluted disc sleeve; the fluted disc sleeve 414 is arranged on the steel pipe 300 in the shell 401 through two cross recessed countersunk head screws C419, and a gear disc component is sleeved on the gear surface outside the fluted disc sleeve 414; the gear disc assembly comprises a gear number plate 403, a zero setting display plate 404, a gear disc 405 and a cylindrical pin 406, wherein the gear number plate 403 and the zero setting display plate 404 are glued on the upper portion of the gear disc 405, the cylindrical pin 406 is arranged on the other side of the zero setting display plate 404 on the upper portion of the gear disc 405, and a single tooth of the gear disc 405 is inserted between two gear teeth on the upper portion of a gear disc sleeve 414; the key 408 is arranged on the other side of the fluted disc sleeve 414 and is in contact with the end face of the main support plate 410, the head of the key 408 extends out of a square hole formed by the upper groove of the shell 401 and the upper groove of the main support plate 410, the lower part of the key 408 is connected with the single toothed plate 420 through a cross recessed countersunk head screw D421 and a hexagon nut C422, and a single tooth at the lower part of the single toothed plate 420 is inserted between two teeth at the lower part of the fluted disc sleeve 414; the single-tooth plate 420 is provided with a limit plate 418 through a helical spring B423, and the limit plate 418 is positioned at the lower part of the rectangular hole in the main support plate 410; the lower part of the gear disc 405 is concave, one end of the concave shape is provided with a handle, the other end of the concave shape is provided with a spring hole, the spring hole is provided with an inner hexagonal flat end set screw A417 externally sleeved with a spiral spring A416, and the head of the spiral spring A416 is provided with a steel ball A415 contacted with the gear disc sleeve 414; the metronome 460 is disposed within a side aperture of the main support plate 410.
As shown in fig. 1 and 6, the metronome 460 includes a steel ball B461, a top pillar 462, a sleeve 463, a coil spring C465, a hexagon socket flat-end set screw B466, and a pulling sleeve 467; the sleeve 463 is arranged in the side hole of the main support plate 410, and the top pillar 462 is arranged in the sleeve 463; one end of the top pillar 462 is provided with a steel ball B461, the other end is provided with a spiral spring C465, and the other end of the spiral spring C465 is provided with an inner hexagonal flat end fastening screw B466; the inner hexagonal flat end set screw B466 is in threaded connection with the sleeve 463; the outer circle surface of one end of the sleeve 463, which is connected with the hexagon socket flat end set screw B466, is connected with a pulling sleeve 467 through threads; the steel balls B461 acted by the coil spring C465 are pressed in round holes uniformly distributed on the side face of the fluted disc sleeve 414, and the number of the round holes is 50.
As shown in fig. 1, 2, 3 and 7, each of the right-hand handle bolt assembly 500 and the left-hand handle bolt assembly 600 includes a pressing sleeve 424, a limiting frame 425, a socket head cap screw C501, a closing plate B502, a cross recessed countersunk head screw E503, a handle bolt 504 and a functional hook assembly 800; the left-hand handle bolt assembly 600 further comprises a gasket 302, an oilless sliding bearing 303 and an auxiliary support plate 304, wherein the auxiliary support plate 304 is fixed on the steel pipe 300 at the end part of the sheath 301 through the oilless sliding bearing 303 in the inner hole, and the gaskets 302 are arranged at two ends of the oilless sliding bearing 303; the right handle bolt assembly 500 further comprises a main support plate 410, wherein a large hole is formed in the front of the main support plate 410, and the zero-setting gear shifter 400 is sleeved with the large hole; the main support plate 410 and the auxiliary support plate 304 are connected and arranged at two ends of the connecting rod 700 through two hexagon socket head cap screws C501, and a closing plate B502 is arranged outside the hexagon socket head cap screws C501; the two limiting frames 425 are connected and arranged at the rear parts of the main support plate 410 and the auxiliary support plate 304 through a socket head cap screw C501; the two handle bolts 504 sequentially pass through the vertical holes of the limiting frame 425, the mounting holes of the main support plate 410 or the auxiliary support plate 304 and the pressing sleeve 424 arranged at the lower part of the mounting holes of the main support plate 410 or the auxiliary support plate 304, and are in threaded connection with a foundation nut through the head parts of the handle bolts; the functional hook assembly 800 comprises a functional hook 801 and a hexagon socket head cap screw D802; the functional hook 801 of the right handle bolt assembly 500 is arranged at the bottom of the front side of the main supporting plate 410 through three hexagon socket head cap screws D802; the functional hook 801 of the left-hand handle bolt assembly 600 is arranged at the bottom of the front side of the auxiliary support plate 304 through three hexagon socket head cap screws D802; the functional hook 801 includes a V-shaped groove into which the starter pedal 900 is placed.
As shown in fig. 1 and 2, each of the right pulley 100 and the left pulley 200 includes a pulley body, a belt pressing plate 201, a cross recessed countersunk head screw a202, a hexagon nut a203, a closed ring a204, a pulley decorative plate 205, a cross recessed countersunk head screw B206, and a hexagon nut B207; a flange is arranged on the side face of one end of the pulley body, a mounting hole is formed in the flange, the pulley body is fixed to two ends of the steel pipe 300 through a cross recessed countersunk head screw B206 and a hexagon nut B207, a closed ring A204 is arranged at the head of the cross recessed countersunk head screw B, and a pulley decorative plate 205 is arranged in a stepped hole in the side face of the other end of the pulley body; the pulley body is provided with a bearing pulley groove, and one end of a bearing belt 901 is fixed on the steel pipe 300 and the pulley body through a belt pressing plate 201, a cross-groove countersunk head screw A202 and a hexagon nut A203.
The use method of the overhead backstroke starting device is used for competition and training of backstroke projects, and comprises the following steps:
s1, installing: the right-hand handle bolt assembly 500 and the left-hand handle bolt assembly 600 are installed on a starting platform 1110 of a swimming pool or a foundation nut of a starting judger 1120 on the upper part of the starting platform 1110 by adopting threaded connection;
s2, zeroing: according to the regulations of the international swimming union or the Chinese swimming union, the zero setting shifter 400 is adjusted according to the height of the starting platform 1110 and the height of the water surface 1140 of the swimming pool to ensure that the upper end surface of the starting pedal 900 reaches the zero position of the water surface 1140 of the swimming pool;
s3, shifting: according to the regulations of the international swimming union or the Chinese swimming union, the zero setting gear shifter 400 is adjusted to ensure a preset gear between the upper end surface of the starting pedal 900 and the water surface 4 CM;
s4, storing: in the field of a natatorium, when the backstroke starting device arranged on the starting table is not used temporarily, the starting pedal 900 is inserted into the functional hooks 801 of the right-handle bolt assembly 500 and the left-handle bolt assembly 600;
s5, transportation: using a special storage and transportation vehicle with a device for fixing the starting pedal.
The step S2 specifically includes the following sub-steps:
s21, the gear disc 405 is pulled out axially by 10mm through a handle at the lower part of the gear disc 405, and when a Chinese character 'zero setting' is displayed in the gear display window 402 on the shell 401, the Chinese character is in a zero setting state;
s22, pressing the button 408 with the left hand to disengage the single tooth of the single tooth plate 420 on the button 408 from the fluted disc sleeve 414, rotating the right pulley 100 with the right hand to wind or release the length of the bearing belt 901 to adjust the lifting of the starting pedal 900, and releasing the button 408 with the left hand after adjusting the starting pedal 900 to a predetermined position;
s23, the shift lever 405 is pushed inward by 10mm by the handle at the lower portion of the shift lever 405, so that the single tooth on the shift lever 405 is engaged with the gear sleeve 414 between teeth, and when the number "0" is displayed in the gear position display window 402 of the housing 401, it indicates that the shift state is in progress.
The step S3 specifically includes the following sub-steps:
s31, pressing the button 408 with the left hand to disengage the single tooth of the single tooth plate 420 on the button 408 from the fluted disc sleeve 414;
and S32, rotating the right belt wheel 100 by the right hand, winding or releasing the length of the bearing belt 901 to adjust the ascending and descending of the starting pedal 900, simultaneously rotating the gear number plate 403 on the gear disc 405, stopping rotating the right belt wheel 100 when reaching a preset gear, and stopping pressing the key 408 by the left hand to finish gear shifting.
Example 1
As shown in fig. 8, as one of the preferable best modes, the use method of the top-mounted backstroke starter is used for the match and training of backstroke items, and comprises the following implementation steps:
s1, installing: a starting judging device is required to be installed and used on the starting platform, and a backstroke starting device is installed and used on the starting judging device. And the starting judging device is provided with an embedded nut matched with the backstroke starting device, the backstroke starting device is placed, a handle bolt assembly on the backstroke starting device is rotated by hands to fasten the backstroke starting device, and accordingly, the backstroke starting device is installed.
S2, zeroing: according to the regulations of the international swimming union or the Chinese swimming union, the zero setting gear shifter in the backstroke starting device is adjusted according to the height of the starting platform and the height of the water surface of the swimming pool to ensure that the upper end surface of the starting pedal reaches the zero position of the water surface of the swimming pool;
s3, shifting: according to the regulations of the international swimming union or the Chinese swimming association, the zero-setting gear-shifting device in the backstroke starting device is adjusted to ensure a preset gear between the upper end surface of the starting pedal and 4CM above the water surface to 4CM below the water surface;
s4, storing: in the field of a natatorium, when the backstroke starting device arranged on the starting table is not used temporarily, the starting pedal is inserted into the functional hooks of the right handle bolt assembly and the left handle bolt assembly;
s5, transportation: using a special storage and transportation vehicle with a device for fixing the starting pedal.
The step S2 specifically includes the following sub-steps:
s21, the gear disc is pulled out axially by 10mm through a handle at the lower part of the gear disc, and when a two-character Chinese character zero setting is displayed in a gear display window on the shell 401, the two-character Chinese character zero setting is in a zero setting state;
s22, pressing down the key with the left hand to disengage the single tooth of the single tooth plate on the key from the fluted disc sleeve, rotating the right belt wheel with the right hand to wind or release the length of the bearing belt to adjust the lifting of the starting pedal, and releasing the key with the left hand after adjusting the starting pedal to a preset position;
s23, the gear disc is pushed inwards by 10mm axially through a handle at the lower part of the gear disc, so that the single teeth on the gear disc are meshed with the teeth of the gear disc sleeve, and when a number '0' is displayed in a gear display window on the shell, the gear is in a gear shifting state.
The step S3 specifically includes the following sub-steps:
s31, pressing the key with left hand to make the single tooth of the single tooth plate on the key disengaged with the fluted disc sleeve;
and S32, rotating the right belt wheel by the right hand, winding or releasing the length of the bearing belt to adjust the starting pedal to lift, simultaneously rotating the gear number plate on the gear disc, stopping rotating the right belt wheel when reaching a preset gear, and stopping pressing the key by the left hand to finish gear shifting.
Example 2
As shown in fig. 9, as a second preferred embodiment, the method for using the top-mounted backstroke starter is used for competition and training of backstroke projects, and comprises the following implementation steps:
s1, installing: directly mounting and using a backstroke starting device on the starting platform; the starting stations are divided into two types, one type is matched with the backstroke starter, corresponding mounting nuts are pre-embedded, and the method for mounting the backstroke starter is completely the same as that of the embodiment 1; the other type of starting platform is the other type of existing swimming stadiums, a special starting platform drill jig is needed, two round holes with the diameter of 10mm are machined in the starting platform through an electric hand drill, after the backstroke starting device is installed, two hexagon nuts are screwed on the lower surface of a starting platform panel, and the installation work of the backstroke starting device is completed.
S2, zeroing: according to the regulations of the international swimming union or the Chinese swimming union, the zero setting gear shifter in the backstroke starting device is adjusted according to the height of the starting platform and the height of the water surface of the swimming pool to ensure that the upper end surface of the starting pedal reaches the zero position of the water surface of the swimming pool;
s3, shifting: according to the regulations of the international swimming union or the Chinese swimming association, the zero-setting gear-shifting device in the backstroke starting device is adjusted to ensure a preset gear between the upper end surface of the starting pedal and 4CM above the water surface to 4CM below the water surface;
s4, storing: in the field of a natatorium, when the backstroke starting device arranged on the starting table is not used temporarily, the starting pedal is inserted into the functional hooks of the right handle bolt assembly and the left handle bolt assembly;
s5, transportation: using a special storage and transportation vehicle with a device for fixing the starting pedal.
The step S2 specifically includes the following sub-steps:
s21, the gear disc is pulled out axially by 10mm through a handle at the lower part of the gear disc, and when a two-character Chinese character zero setting is displayed in a gear display window on the shell 401, the two-character Chinese character zero setting is in a zero setting state;
s22, pressing down the key with the left hand to disengage the single tooth of the single tooth plate on the key from the fluted disc sleeve, rotating the right belt wheel with the right hand to wind or release the length of the bearing belt to adjust the lifting of the starting pedal, and releasing the key with the left hand after adjusting the starting pedal to a preset position;
s23, the gear disc is pushed inwards by 10mm axially through a handle at the lower part of the gear disc, so that the single teeth on the gear disc are meshed with the teeth of the gear disc sleeve, and when a number '0' is displayed in a gear display window on the shell, the gear is in a gear shifting state.
The step S3 specifically includes the following sub-steps:
s31, pressing the key with left hand to make the single tooth of the single tooth plate on the key disengaged with the fluted disc sleeve;
and S32, rotating the right belt wheel by the right hand, winding or releasing the length of the bearing belt to adjust the starting pedal to lift, simultaneously rotating the gear number plate on the gear disc, stopping rotating the right belt wheel when reaching a preset gear, and stopping pressing the key by the left hand to finish gear shifting.
Compared with the prior art, the invention has the beneficial effects that: the top-mounted backstroke starter is used for backstroke project competition and training of swimming, and comprises a zero setting gear shifting device and a bearing part, wherein the bearing part comprises a right belt wheel, a left belt wheel, a steel pipe, a sheath, a main support plate, a positioning ring, a right handle bolt assembly, a left handle bolt assembly, a connecting rod, a granular rubber plate, a starting pedal and a bearing belt; by adopting a new principle and a simpler structural design, the starting pedal of the backstroke starting device can be set to be a zero position at any position, and the zero position is locked simply and reliably; adopt gear window to show digit gear, every shows a digit, only shows the corresponding digit of current gear at every turn, and is directly perceived simple, can show 9 gears altogether: +4, +3, +2, +1, 0, -1, -2, -3, -4; the backstroke starting device is connected with the starting platform or the starting judging device by threads; adopting trapezoidal large-interval straight grains; the use method of the overhead backstroke starter comprises the following steps: the overhead backstroke starting device is connected and installed on a starting platform of a swimming venue or a foundation nut of a starting judgment device on the upper part of the starting platform by adopting threads; adjusting a zero-setting gear-shifting device in the backstroke starting device according to the height of the starting platform and the height of the water surface of the swimming pool to ensure that the upper end surface of the starting pedal reaches the zero position of the water surface of the swimming pool; adjusting a zero-setting gear-shifting device in the backstroke starting device to ensure a preset gear between the upper end surface of the starting pedal and the water surface from 4CM to the water surface from 4 CM; when the starting pedal is not used, the starting pedal is inserted into the functional hook; transporting by using a special storage vehicle with a device for fixing the starting pedal; the overhead backstroke starting device has the characteristics of convenient zero adjustment, intuitive gear adjustment, firm installation, good manufacturability, good skid resistance and safe and convenient storage and transportation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited to the specific embodiments of the present invention, and any modification, equivalent replacement, improvement, modification, etc. within the spirit and principle of the present invention and the disclosed technical scope should be included in the scope of the present invention.
Claims (8)
1. The overhead backstroke starter is used for competition and training of backstroke projects and comprises a zero setting gear shifting device (400) and a bearing part, wherein the bearing part comprises a right belt wheel (100), a left belt wheel (200), a steel pipe (300), a sheath (301), a main support plate (410), a positioning ring (412), a right handle bolt assembly (500), a left handle bolt assembly (600), a connecting rod (700), a grain rubber plate (803), a starting pedal (900) and a bearing belt (901); the method is characterized in that: a right belt wheel (100) is arranged at one end part of the steel pipe (300), and a zero setting gear shifter (400) is arranged on the steel pipe (300) with a preset distance from one side corresponding to the right belt wheel (100); the right handle bolt assembly (500) comprises a main support plate (410), the cylindrical end of the zero setting gear shifter (400) is arranged in an inner hole of the main support plate (410) of the right handle bolt assembly (500), a positioning ring (412) is arranged on the other side of the main support plate (410), a sheath (301) is arranged on the other side of the positioning ring (412) and is located in the middle of the steel pipe (300), a left handle bolt assembly (600) is arranged on one side of the sheath (301), and a left belt wheel (200) is arranged on the position, away from the corresponding other side of the left handle bolt assembly (600), of a preset size; the right handle bolt assembly (500) and the left handle bolt assembly (600) both comprise a functional hook assembly (800), the left handle bolt assembly (600) further comprises an auxiliary support plate (304), a connecting rod (700) is arranged between the main support plate (410) and the auxiliary support plate (304), and the functional hook assembly (800) is arranged at the bottom positions of the front sides of the main support plate (410) and the auxiliary support plate (304); the right belt wheel (100) and the left belt wheel (200) respectively comprise bearing belt wheel grooves, bearing belts (901) with equal length are arranged in the bearing belt wheel grooves, and a starting pedal (900) is arranged between the two bearing belts (901); the two ends of the starting pedal (900) are provided with particle surface rubber plates (803), and the middle part of the starting pedal is provided with anti-skid trapezoidal large-interval straight grains; a closed ring C (411) is arranged on the cylindrical surface of the outer side of the positioning ring (412) and is fixed on the steel pipe (300) through a hexagon socket head cap screw A (413); a groove is formed in the end face of the main support plate (410) on one side of the positioning ring (412), and a closed ring B (409) is arranged inside the groove.
2. The overhead backstroke starter of claim 1 wherein: the zero-setting gear shifter (400) comprises a metronome (460), a shell (401), a gear display window (402), a gear digital plate (403), a zero-setting display panel (404), a gear disc (405), a cylindrical pin (406), a closing plate A (407), a key (408), a gear disc sleeve (414), a steel ball A (415), a spiral spring A (416), an inner hexagonal flat end set screw A (417), a limiting plate (418), a cross recessed countersunk head screw C (419), a single toothed plate (420), a cross recessed countersunk head screw D (421), a hexagonal nut C (422), a spiral spring B (423) and a cylindrical head hexagonal screw B (464); a semi-closed cavity is arranged in the shell (401), a mounting hole is formed in one semi-closed side wall of the cavity, and a gear display window (402) and a closed plate A (407) are fixedly glued to the upper portion of the shell (401) in sequence; the shell (401) is arranged on the outer cylindrical surface of the steel pipe (300) between the right belt wheel (100) and the right handle bolt assembly (500) through a mounting hole and is fixedly arranged on the side surface of the main support plate (410) through six hexagon socket head cap screws B (464); the fluted disc sleeve (414) is arranged in the shell (401), and 50 circular holes are uniformly distributed on the side surface of the fluted disc sleeve; the gear disc sleeve (414) is arranged on the steel pipe (300) in the shell (401) through two cross recessed countersunk head screws C (419), and a gear disc component is sleeved on a gear surface on the outer side of the gear disc sleeve (414); the gear disc assembly comprises a gear digit plate (403), a zero setting display plate (404), a gear disc (405) and a cylindrical pin (406), wherein the gear digit plate (403) and the zero setting display plate (404) are glued to the upper part of the gear disc (405), the cylindrical pin (406) is arranged on the other side of the zero setting display plate (404) on the upper part of the gear disc (405), and a single tooth of the gear disc (405) is inserted between two gear teeth on the upper part of a gear disc sleeve (414); the key (408) is arranged on the other side of the fluted disc sleeve (414) and is in end surface contact with the main support plate (410), the head of the key (408) extends out of a square hole formed by the upper groove of the shell (401) and the upper groove of the main support plate (410), the lower part of the key (408) is connected with the single toothed plate (420) through a cross-slot countersunk head screw D (421) and a hexagon nut C (422), and the single tooth at the lower part of the single toothed plate (420) is inserted between two gear teeth at the lower part of the fluted disc sleeve (414); the single-tooth plate (420) is provided with a limiting plate (418) through a spiral spring B (423), and the limiting plate (418) is positioned at the lower part of a rectangular hole in the main support plate (410); the lower part of the gear disc (405) is concave, one end of the concave shape is provided with a handle, the other end of the concave shape is provided with a spring hole, the spring hole is provided with an inner hexagonal flat end set screw A (417) which is externally sleeved with a spiral spring A (416), and the head of the spiral spring A (416) is provided with a steel ball A (415) which is contacted with the gear disc sleeve (414); the metronome (460) is disposed within a side aperture of the main plate (410).
3. The overhead backstroke starter of claim 2 wherein: the metronome (460) comprises a steel ball B (461), a top column (462), a sleeve (463), a spiral spring C (465), an inner hexagonal flat end set screw B (466) and a pull sleeve (467); the sleeve (463) is arranged in a side hole of the main support plate (410), and a top column (462) is arranged in the sleeve (463); one end of the top column (462) is provided with a steel ball B (461), the other end is provided with a spiral spring C (465), and the other end of the spiral spring C (465) is provided with an inner hexagonal flat end fastening screw B (466); the inner hexagonal flat end set screw B (466) is in threaded connection with the sleeve (463); the outer circle surface of one end of the sleeve (463) connected with the inner hexagonal flat end set screw B (466) is connected with a pulling sleeve (467) through threads; the steel balls B (461) are pressed in round holes uniformly distributed on the side face of the gear disc sleeve (414), and the number of the round holes is 50.
4. The overhead backstroke starter of claim 1 wherein: the right handle bolt assembly (500) and the left handle bolt assembly (600) respectively comprise a pressing sleeve (424), a limiting frame (425), a socket head cap screw C (501), a sealing plate B (502), a cross recessed countersunk head screw E (503), a handle bolt (504) and a functional hook assembly (800); the left handle bolt assembly (600) further comprises a gasket (302), an oilless sliding bearing (303) and an auxiliary support plate (304), the auxiliary support plate (304) is fixed on the steel pipe (300) at the end part of the sheath (301) through the oilless sliding bearing (303) in the inner hole, and the gaskets (302) are arranged at two ends of the oilless sliding bearing (303); the right handle bolt assembly (500) further comprises a main support plate (410), a large hole is formed in the front portion of the main support plate (410), and the large hole is sleeved on the zero-setting gear shifter (400); the main support plate (410) and the auxiliary support plate (304) are connected and arranged at two ends of the connecting rod (700) through two hexagon socket head cap screws C (501), and a closing plate B (502) is arranged on the outer side of each hexagon socket head cap screw C (501); the two limiting frames (425) are connected and arranged at the rear parts of the main support plate (410) and the auxiliary support plate (304) through a hexagon socket head cap screw C (501); the two handle bolts (504) sequentially penetrate through a vertical hole formed in the limiting frame (425), a mounting hole of the main support plate (410) or the auxiliary support plate (304), and a pressing sleeve (424) arranged at the lower part of the mounting hole of the main support plate (410) or the auxiliary support plate (304), and are connected with a foundation nut through the head part of the pressing sleeve in a threaded manner; the functional hook component (800) comprises a functional hook (801) and a hexagon socket head cap screw D (802); the functional hook (801) of the right handle bolt assembly (500) is arranged at the bottom of the front side of the main support plate (410) through three hexagon socket head cap screws D (802); the functional hook (801) of the left handle bolt assembly (600) is arranged at the bottom of the front side of the auxiliary support plate (304) through three hexagon socket head cap screws D (802); the functional hook (801) comprises a V-shaped groove for placing the starting pedal (900).
5. The overhead backstroke starter of claim 1, wherein: the right belt wheel (100) and the left belt wheel (200) respectively comprise a belt wheel body, a belt pressing plate (201), a cross recessed countersunk head screw A (202), a hexagon nut A (203), a closed ring A (204), a belt wheel decorative plate (205), a cross recessed countersunk head screw B (206) and a hexagon nut B (207); a flange is arranged on the side face of one end of the pulley body, a mounting hole is formed in the flange, the pulley body is fixed to the two ends of the steel pipe (300) through a cross groove countersunk head screw B (206) and a hexagon nut B (207), a closed ring A (204) is arranged at the head of the cross groove countersunk head screw B, and a pulley decorative plate (205) is arranged in a stepped hole in the side face of the other end of the pulley body; the pulley body is provided with a bearing pulley groove, and one end of a bearing belt (901) is fixed on the steel pipe (300) and the pulley body through a belt pressing plate (201), a cross groove countersunk head screw A (202) and a hexagon nut A (203).
6. Use of the overhead backstroke starter as claimed in any one of claims 1 to 5 for playing and training backstroke events, wherein: the method comprises the following steps:
s1, mounting: the right handle bolt assembly (500) and the left handle bolt assembly (600) are connected and installed on a starting platform (1110) of a swimming venue or a foundation nut of a starting judger (1120) on the upper part of the starting platform (1110) by threads;
s2, zeroing: according to the regulations of the International swimming Union or the Chinese swimming Association, the zero setting gear shifter (400) is adjusted according to the height of the starting platform (1110) and the height of the swimming pool water surface (1140), and the upper end surface of the starting pedal (900) is ensured to be at the zero position of the swimming pool water surface (1140);
s3, shifting: according to the regulations of the international swimming union or the Chinese swimming association, the zero setting gear shifter (400) is adjusted to ensure a preset gear between the upper end surface of the starting pedal (900) and the water surface from 4CM to the water surface from 4 CM;
s4, storing: when the backstroke starting device arranged on the starting table is not used temporarily in a natatorium site, the starting pedal (900) is inserted into the functional hooks (801) of the right handle bolt assembly (500) and the left handle bolt assembly (600);
s5, transportation: using a special storage and transportation vehicle with a device for fixing the starting pedal.
7. The method of claim 6, wherein: the step S2 specifically includes the following sub-steps:
s21, the gear disc (405) is axially pulled out by 10mm outwards through a handle at the lower part of the gear disc (405), and when a Chinese character zero setting two-character is displayed in a gear display window (402) on the shell (401), namely the Chinese character zero setting two-character is in a zero setting state;
s22, pressing the key (408) with the left hand to disengage the single tooth of the single-tooth plate (420) on the key (408) from the gear disc sleeve (414), rotating the right belt wheel (100) with the right hand to wind or release the lifting of the length-adjusting starting pedal (900) of the bearing belt (901), and releasing the key (408) with the left hand after adjusting the starting pedal (900) to a preset position;
s23, the gear disc (405) is pushed inwards by 10mm axially through a handle at the lower part of the gear disc (405), so that single teeth on the gear disc (405) are engaged with teeth of the gear disc sleeve (414), and when the number '0' is displayed in the gear display window (402) on the shell (401), the gear is in a gear shifting state.
8. The method of claim 6, wherein: the step S3 specifically includes the following sub-steps:
s31, pressing the key (408) with the left hand to disengage the single tooth of the single-tooth plate (420) on the key (408) from the gear disc sleeve (414);
s32, rotating the right belt wheel (100) by the right hand, winding or releasing the length of the bearing belt (901) to adjust the lifting of the starting pedal (900), simultaneously rotating the gear digit plate (403) on the gear disc (405), stopping rotating the right belt wheel (100) when reaching the preset gear, and stopping pressing the key (408) by the left hand to finish the gear shifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361490.1A CN107115636B (en) | 2017-05-22 | 2017-05-22 | Overhead backstroke starting device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361490.1A CN107115636B (en) | 2017-05-22 | 2017-05-22 | Overhead backstroke starting device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107115636A CN107115636A (en) | 2017-09-01 |
| CN107115636B true CN107115636B (en) | 2022-07-08 |
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| CN201710361490.1A Active CN107115636B (en) | 2017-05-22 | 2017-05-22 | Overhead backstroke starting device and using method thereof |
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| CN (1) | CN107115636B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0218327A2 (en) * | 1985-09-10 | 1987-04-15 | Swimex Systems, Inc. | Control of the flow in a tank |
| CN204016315U (en) * | 2014-08-22 | 2014-12-17 | 上海体育科学研究所 | A kind of specific strength test set for swimming instruction |
| CN206853024U (en) * | 2017-05-22 | 2018-01-09 | 山东中泳体育股份有限公司 | Overhead type backstroke is set out device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9316371B2 (en) * | 2013-06-18 | 2016-04-19 | New Technology Bank Co., Ltd. | Monotrack-movable lighting system having a lifting zone for maintenance |
| US9415263B2 (en) * | 2014-04-25 | 2016-08-16 | DeCarlo Enterprises, Inc. | Athletic training system, method and computer program product |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0218327A2 (en) * | 1985-09-10 | 1987-04-15 | Swimex Systems, Inc. | Control of the flow in a tank |
| CN204016315U (en) * | 2014-08-22 | 2014-12-17 | 上海体育科学研究所 | A kind of specific strength test set for swimming instruction |
| CN206853024U (en) * | 2017-05-22 | 2018-01-09 | 山东中泳体育股份有限公司 | Overhead type backstroke is set out device |
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| CN107115636A (en) | 2017-09-01 |
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Address after: 272100 Jining national fitness square swimming pool in Shandong Applicant after: SHANDONG ZHONGYONG SPORTS CO.,LTD. Address before: 272100 Shandong Jining national fitness square swimming pool level (Shandong Zhi Zhi sports Polytron Technologies Inc) Applicant before: SHANDONG SHUZHI SPORTS TECHNOLOGY CO.,LTD. |
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Address after: 272100 Jining national fitness square swimming pool in Shandong Applicant after: Shandong Zhongyong Electronics Co.,Ltd. Address before: 272100 Jining national fitness square swimming pool in Shandong Applicant before: SHANDONG ZHONGYONG SPORTS CO.,LTD. |
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