CN109200558A - A method of table tennis teaching is carried out using ball serving device - Google Patents

Abstract

The invention discloses a kind of methods for carrying out table tennis teaching using ball serving device, wherein, the ball serving device includes installation frame and the service chamber that is arranged in the installation frame and is open to the right, the power mechanism being provided in the installation frame on the left of the service chamber, the power mechanism includes the pulsometer being arranged on the left of the service chamber, a cavity is provided with and communicated between the pulsometer right end and the service chamber left end, the pulsometer left end is provided with the ventilation pipe being connected with the external world, ball feeding device is provided in the service chamber upper end wall, the ball feeding device includes being connected to the release channel being arranged on the upside of the service chamber in end wall, the configuration of the present invention is simple, by and the drive mechanism that gathers complete shot, according to the size of atmospheric pressure value, initial velocity when adjustable table tennis transmitting, and it is adjusted by control The rotational angle of locking nub carrys out the ball launch angle of regulating device, meets the launch requirements of the multi-angle of user.

Description

A method of table tennis teaching is carried out using ball serving device

Technical field

The present invention relates to table tennis teaching technical field, specially a kind of side that table tennis teaching is carried out using ball serving device Method.

Background technique

Table tennis is a kind of ball sports project of prevalence in the world, and as Chinese national ball game, in China's mass foundation Extensively, table tennis fan and paddler's quantity are more, needed during table tennis training two or more people into Row cooperation, one is difficult to carry out, and table tenning ball servicing machine is needed to be assisted, and ball serving device structure at this stage is complex, hair Ball angle is more single, needs table tennis fan to deacclimatize the angle of service robot, while the ball serving device being driven is in transmitting Initial velocity is identical, cannot embody the diversity of table tennis, to reduce the usage experience of table tennis fan.

Summary of the invention

It is existing for overcoming the purpose of the present invention is to provide a kind of method for carrying out table tennis teaching using ball serving device Drawbacks described above in technology.

A kind of method carrying out table tennis teaching using ball serving device according to the present invention, which includes fitting machine Frame and the service chamber for being arranged in the installation frame and being open to the right, wherein be provided in the installation frame positioned at institute The power mechanism on the left of service chamber is stated, the power mechanism includes the pulsometer being arranged on the left of the service chamber, the air pressure A cavity is provided with and communicated between pump right end and the service chamber left end, and the pulsometer left end is provided with to be connected with extraneous Ventilation pipe, ball feeding device is provided in the service chamber upper end wall, and the ball feeding device includes that connection is arranged in the service Release channel on the upside of chamber in end wall, two sides are provided with the position restrainer that rack-and-pinion group is driven up and down in the release channel Structure is provided with ball serving device in end wall on the downside of the service chamber, and the ball serving device includes that connection is arranged under the service chamber Electromagnetic cavity in the wall of side is provided with the electromagnetic mechanism that can slide up and down in the electromagnetic cavity, and the electromagnetic mechanism right end is fixed It is connected with the link mechanism extended to the right, the link mechanism upper end is fixedly installed and can horizontally slip in the service chamber Impact block, the regulating device being provided in the installation frame on the downside of the ball serving device, the regulating device include setting The sliding slot on the downside of the ball serving device is set, the company being connected with the service chamber lower end wall is provided in the wall of the sliding slot left end It takes over, the sliding block that can be horizontally slipped is provided in the sliding slot, is provided with and communicated with an adjusting cavity on the right side of the service chamber lower end wall, It is rotatably assorted on end wall by hinge on the left of the adjusting cavity and an adjusting block is installed, the upper end of slide block face is rotated by hinge It is connected with link mechanism, and the one end of the link mechanism far from the sliding block and the adjusting block lower end surface pass through hinge Be rotatably assorted connection；

Its application method: in the preparation process before service, start pulsometer, extraneous air is pressed into the sliding slot, lead to Toning regulating device changes adjusting block around the rotational angle of hinged place, starts electromagnetic mechanism after reaching scheduled ball launch angle, and lead to It crosses ball serving device and hits ball from the right opening of the service chamber, be at this time sent to next table tennis by ball feeding device pending Penetrate position.

Further technical solution, the ball feeding device mechanism include that connection is arranged in the upper end wall of the release channel Spherical cavity is stored up, is placed with several tablees tennis to be launched in the storage spherical cavity, the installation frame upper surface is fixedly installed with entrance Mounting blocks, are penetratingly provided in the entrance mounting blocks and release entrance that the storage spherical cavity is connected up and down, the release It is provided with main transmission chamber on the left of channel, driving tooth can be rotatably set by driving shaft between end wall before and after the main transmission chamber It takes turns, fixed the first torque spring for being wound around the driving shaft outer surface is additionally provided in the main transmission chamber, the release is logical It is provided with driven chamber on the right side of road, driven gear is rotatably provided with by driven shaft in the driven chamber, in the driven chamber It is additionally provided with fixed the second torque spring for being wound around the driven shaft outer surface, between the main transmission chamber and the driven chamber It is provided with and communicated with the main transmission slot that left and right extends and is located on the downside of the driving gear, and the main transmission slot runs through the release On the downside of channel, being provided in the main transmission slot can horizontally slip and be meshed with the driving gear and the driven gear Main transmission rack gear, be provided with perforative lower channel up and down in the main transmission rack gear, the main transmission chamber lower end wall with it is described It is provided with and communicated with a link slot between service chamber upper end wall, is slidably fitted in the link slot and is fixedly mounted on the main transmission The drive block of rack gear lower end, and the drive block lower end is protruded into the service chamber, the main transmission chamber and the driven chamber it Between be provided with and communicated with left and right extend and be located at the driving gear on the upside of driven slot, the driven slot run through the release channel Upside, being provided in the driven slot can horizontally slip and be meshed with the driving gear and the driven gear driven Rack gear, is provided with upper channel up and down in the driven rack gear, and the release channel, the lower channel and it is described on Channel mutually staggers in normal state；

When use: driving the drive block to slide to the right by the ball serving device, the drive block passes through the main transmission tooth Meshing relation between item and the driving gear drives the driven gear rotation, while the driven rack gear being driven to move to the left Dynamic, first torque spring and the torque spring are in twisting states, at this time the table tennis in the storage spherical cavity It is fallen into the release channel by the upper channel, passes through first torsion when the ball serving device restores initial position The torsion of spring and the torque spring drives the driving gear and the driven gear to rotate backward, described at this time to send The table tennis in ball channel is fallen in the service chamber by the lower channel, and is in battery.

Further technical solution, the ball serving device include the seal washer for being fixed at the impact block left end, The impact block upper surface is fixedly installed the transmitting block matched with the drive block, the service chamber upper end wall fixed setting There is a baffle block being located on the right side of the impact block, is provided with the electromagnetic block that can slide up and down, the electromagnetism in the electromagnetic cavity Chamber lower end wall is fixedly installed with symmetrical electromagnet, the electromagnetic block lower end surface be fixedly installed bilateral symmetry and with it is described The armature block that electromagnet matches is fixedly installed the first bullet between the electromagnetic block lower end surface and the electromagnetic cavity lower end wall Spring is provided with and communicated with shifting chute on the right side of the electromagnetic cavity in the service chamber lower end wall, is provided in the shifting chute It can horizontally slip and be fixed at the translational block on the downside of the impact block, the translational block left end and shifting chute left end wall Between be fixedly installed second spring symmetrical above and below, the shifting chute is provided with the reset that can be horizontally slipped between end wall up and down Block is provided with the perforative stroke groove in left and right in the resetting block, and between the resetting block right end and the shifting chute right end wall It is fixedly installed symmetrical third spring downwards, is provided with and communicated with a limiting slot, the limit in end wall on the right side of the shifting chute It is provided with the limited block that can slide up and down in slot, a lifting groove, institute are provided with and communicated between the shifting chute and the electromagnetic cavity State electromagnetic block right end and be fixedly installed an elevating lever extended to the right, and the elevating lever right end be successively slidably disposed through it is described Lifting groove, the translational block and the stroke groove are simultaneously fixedly connected on the left of the limited block；

When use: the air pressure on the left of the seal washer starts the electromagnet when reaching predetermined value, passes through the electromagnet Gravitation between the electromagnetic block drives the electromagnetic block to move down, and the electromagnetic block passes through described in elevating lever drive Impact block moves down, and drives the impact block to be staggered up and down with the baffle block, drives the impact block to the right by air pressure Movement hits the table tennis on the right side of the impact block, and the translational block right end is abutted against with the resetting block left end at this time, leads to The elastic force effect for crossing the second spring and the third spring restores initial position, closes the electromagnet at this time, described Electromagnetic block moves up recovery initial position under the action of first spring force, re-starts pressurization and prepares to hit next time Ball.

Further technical solution, the regulating device includes the opening control valve being arranged in the connecting tube, described The link block that can be horizontally slipped is provided in sliding slot, the link block right end is fixedly connected with a connecting rod extended to the right, institute It states and is provided with and communicated with mounting groove in sliding slot upper end wall, be slidably fitted in the sliding slot hinged on the downside of the mounting groove Block, and the sliding block left end is fixedly connected with the connecting rod right end, the upper end of slide block face is fixedly installed a coordinating block, institute It states and is provided with and communicated with a mating cavity between mounting groove and the adjusting cavity, be fixedly installed with one between end wall above and below the mounting groove Fixed block on the downside of the mating cavity is provided with the sliding space of one or so extension, the sliding sky in the fixed block Between in be provided with the sliding shoe that can be horizontally slipped, and a connecting rod is fixedly installed between the sliding shoe and the coordinating block, One support rod upwardly extended, and the one end of the support rod far from the sliding shoe are rotatably installed on the sliding shoe It is connect with being rotatably assorted on the right side of the adjusting block lower end surface by hinge；

When use: in the preparation process before service, the opening control valve is opened, by the pulsometer by extraneous air Being pressed into the sliding slot by the connecting tube drives the link block to move right, and the link block passes through the connecting rod band It moves the sliding block to move right, the sliding block drives the sliding shoe to move right by the connecting rod, at this time by described Support rod drives the adjusting block around the angle of hinged place overturning setting.

The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, by and the drive mechanism that gathers complete and hit Ball movement, wherein so that table tennis to be launched is successively fallen on position to be launched by the drive connection of wheel and rack, and according to The size of atmospheric pressure value, initial velocity when can adjust table tennis transmitting, and the rotational angle by controlling to adjust block is come regulating device Ball launch angle meets the launch requirements of the multi-angle of user.

Detailed description of the invention

Fig. 1 is the inside overall structure diagram of apparatus of the present invention；

Fig. 2 is the structural schematic diagram in the present invention at A.

Specific embodiment

Below with reference to Fig. 1-2, the present invention is described in detail, for sake of convenience, now such as to hereafter described orientation regulation Under: hereafter described front-rear direction up and down is consistent with the front-rear direction up and down of Fig. 1 projection relation itself.

Referring to Fig.1-2, a kind of method for carrying out table tennis teaching using ball serving device of embodiment according to the present invention, should Ball serving device includes installation frame 100 and the service chamber 105 that is arranged in the installation frame 100 and is open to the right, wherein The power mechanism positioned at 105 left side of service chamber is provided in the installation frame 100, the power mechanism includes that setting exists The pulsometer 110 in 105 left side of service chamber, is connected to setting between 110 right end of pulsometer and 105 left end of service chamber There is a cavity 106,110 left end of pulsometer is provided with the ventilation pipe 107 being connected with the external world, on the service chamber 105 Ball feeding device is provided in end wall, the ball feeding device includes the release that connection is arranged in the service 105 upside end wall of chamber Channel 167, about 167 two sides of release channel are provided with the position-limit mechanism of rack-and-pinion group transmission, the service chamber Ball serving device is provided in 105 downside end walls, the ball serving device includes that connection is arranged in the 105 downside end wall of service chamber Electromagnetic cavity 147, the electromagnetic mechanism that can slide up and down is provided in the electromagnetic cavity 147, the electromagnetic mechanism right end is fixed to be connected It is connected to the link mechanism extended to the right, the link mechanism upper end, which is fixedly installed, to horizontally slip in the service chamber 105 Impact block 112, the regulating device being provided in the installation frame 100 on the downside of the ball serving device, the adjusting dress It sets including the sliding slot 143 on the downside of the ball serving device is arranged in, is provided with and the service chamber in the 143 left end wall of sliding slot The connecting tube 150 that 105 lower end walls are connected is provided with the sliding block 132 that can be horizontally slipped, the service chamber in the sliding slot 143 It is provided with and communicated with an adjusting cavity 123 on the right side of 105 lower end walls, is rotatably assorted peace on the 123 left side end wall of adjusting cavity by hinge Equipped with an adjusting block 122,132 upper surface of sliding block is rotatably assorted by hinge is connected with link mechanism, and the connecting rod machine The one end of structure far from the sliding block 132 is rotatably assorted by hinge with 122 lower end surface of adjusting block and is connect.

Valuably or illustratively, the ball feeding device mechanism includes that connection is arranged in 167 upper end wall of release channel In storage spherical cavity 115, be placed with several tablees tennis 114 to be launched, 100 upper end of installation frame in the storage spherical cavity 115 Face is fixedly installed with entrance mounting blocks 113, is penetratingly provided with up and down in the entrance mounting blocks 113 and the storage spherical cavity 115 The release entrance 116 being connected is provided with main transmission chamber 173,173 front and back of main transmission chamber on the left of the release channel 167 Driving gear 171 can be rotatably set by driving shaft 157 between end wall, be additionally provided with fixation in the main transmission chamber 173 It is wound around the first torque spring 170 of 157 outer surface of driving shaft, is provided with driven chamber on the right side of the release channel 167 162, driven gear 165 is rotatably provided with by driven shaft 161 in the driven chamber 162, is also set in the driven chamber 162 Be equipped with fixed the second torque spring 164 for being wound around 161 outer surface of driven shaft, the main transmission chamber 173 with it is described driven The main transmission slot 163 that left and right extends and is located at 171 downside of driving gear, and the main biography are provided with and communicated between chamber 162 Dynamic slot 163 be provided in 167 downside of release channel, the main transmission slot 163 can horizontally slip and with the active The main transmission rack gear 160 that gear 171 and the driven gear 165 are meshed is provided in the main transmission rack gear 160 up and down Perforative lower channel 158 is provided with and communicated with a company between 173 lower end wall of main transmission chamber and 105 upper end wall of service chamber Access slot 168 is slidably fitted with the drive block 156 for being fixedly mounted on 160 lower end of main transmission rack gear in the link slot 168, And 156 lower end of drive block is protruded into the service chamber 105, is connected between the main transmission chamber 173 and the driven chamber 162 It is provided with the driven slot 174 that left and right extends and is located at 171 upside of driving gear, the driven slot 174 runs through the release The upside of channel 167, be provided in the driven slot 174 can horizontally slip and with the driving gear 171 and the driven tooth The 165 driven rack gears 172 that are meshed of wheel are provided with upper channel 166 up and down in the driven rack gear 172, and described send Ball channel 167, the lower channel 158 and the upper channel 166 mutually stagger in normal state, and effect is: passing through institute Stating ball serving device drives the drive block 156 to slide to the right, the drive block 156 by the main transmission rack gear 160 with it is described Meshing relation between driving gear 171 drives the driven gear 165 to rotate, while driving the driven rack gear 172 to the left Mobile, first torque spring 170 and the torque spring 164 are in twisting states, at this time in the storage spherical cavity 115 The table tennis 114 is fallen into the release channel 167 by the upper channel 166, when the ball serving device restores initial bit The driving gear 171 and institute are driven by the torsion of first torque spring 170 and the torque spring 164 when setting It states driven gear 165 to rotate backward, the table tennis 114 in the release channel 167 is fallen by the lower channel 158 at this time Into the service chamber 105, and it is in battery, to pass through the driven rack gear 172 and the main transmission rack gear 160 Between mutual cooperation drive the table tennis 114 successively to fall in the service chamber 105, keep the preparation before serving a ball automatic Change and carries out.

Valuably or illustratively, the ball serving device includes the gasket for being fixed at 112 left end of impact block Circle 111,112 upper surface of impact block is fixedly installed the transmitting block 155 matched with the drive block 156, the service 105 upper end wall of chamber is fixedly installed a baffle block 159 for being located at 112 right side of impact block, is provided in the electromagnetic cavity 147 Can slide up and down electromagnetic block 104, and 147 lower end wall of electromagnetic cavity is fixedly installed with symmetrical electromagnet 102, the electricity The armature block 103 that 104 lower end surface of magnetic patch is fixedly installed bilateral symmetry and matches with the electromagnet 102, the electromagnetic block The first spring 151 is fixedly installed between 147 lower end wall of 104 lower end surfaces and the electromagnetic cavity, in 105 lower end wall of service chamber It is provided with and communicated with the shifting chute 137 for being located at 147 right side of electromagnetic cavity, being provided in the shifting chute 137 can horizontally slip simultaneously It is fixed at the translational block 140 of 112 downside of impact block, 140 left end of translational block and the 137 left end wall of shifting chute Between be fixedly installed second spring 141 symmetrical above and below, be provided with and can horizontally slip between about 137 end wall of shifting chute Resetting block 135, be provided with the perforative stroke groove 136 in left and right, and 135 right end of the resetting block and institute in the resetting block 135 It states and is fixedly installed symmetrical third spring 134 downwards between 137 right end wall of shifting chute, in the 137 right side end wall of shifting chute It is provided with and communicated with a limiting slot 121, the limited block 117 that can slide up and down, the shifting chute are provided in the limiting slot 121 A lifting groove 145 is provided with and communicated between 137 and the electromagnetic cavity 147,104 right end of electromagnetic block is fixedly installed one to the right The elevating lever 146 of extension, and 146 right end of the elevating lever is successively slidably disposed through the lifting groove 145, the translational block 140 and the stroke groove 136 and it is fixedly connected on 117 left side of the limited block, effect is: when the seal washer 111 The air pressure in left side starts the electromagnet 102 when reaching predetermined value, by between the electromagnet 102 and the electromagnetic block 104 Gravitation drive the electromagnetic block 104 to move down, the electromagnetic block 104 drives the impact block by the elevating lever 146 112 move down, and drive the impact block 112 to be staggered with about the 159 baffle block, drive the impact block by air pressure 112, which move right, hits the table tennis on 112 right side of impact block, at this time 140 right end of translational block and the resetting block 135 left ends abut against, and are acted on by the elastic force of the second spring 141 and the third spring 134 and restore initial position, this When close the electromagnet 102, the electromagnetic block 104 moves up recovery just under the action of 151 elastic force of the first spring Beginning position re-starts pressurization and prepares to bat next time, thus as batting while leakproofness in guaranteeing pressure process Power resources, and pass through the initial velocity of the size of control pressure adjustment service.

Valuably or illustratively, the regulating device includes the opening control valve being arranged in the connecting tube 150 101, be provided with the link block 144 that can be horizontally slipped in the sliding slot 143,144 right end of link block be fixedly connected with one to The connecting rod 142 of right extension is provided with and communicated with mounting groove 130 in 143 upper end wall of sliding slot, slides peace in the sliding slot 143 Equipped with the hinged block 132 for being located at 130 downside of mounting groove, and 132 left end of the sliding block is fixed with 142 right end of connecting rod Connection, 132 upper surface of sliding block is fixedly installed a coordinating block 133, between the mounting groove 130 and the adjusting cavity 123 It is provided with and communicated with a mating cavity 124, one is fixedly installed between about 130 end wall of mounting groove and is located at the mating cavity 124 The fixed block 128 of downside is provided with the sliding space 126 of one or so extension, the sliding space 126 in the fixed block 128 In be provided with the sliding shoe 127 that can be horizontally slipped, and be fixedly installed one between the sliding shoe 127 and the coordinating block 133 Connecting rod 131 is rotatably equipped with a support rod 125 upwardly extended, and the support rod 125 on the sliding shoe 127 It is rotatably assorted and is connect by hinge on the right side of one end and 122 lower end surface of adjusting block far from the sliding shoe 127, acted on It is: in the preparation process before service, opens the opening control valve 101, is led to extraneous air by the pulsometer 110 It crosses the connecting tube 150 and is pressed into the sliding slot 143 and the link block 144 is driven to move right, the link block 144 passes through institute Stating connecting rod 142 drives the sliding block 132 to move right, and the sliding block 132 drives the sliding shoe by the connecting rod 131 127 move right, and drive the adjusting block 122 around the angle of hinged place overturning setting by the support rod 125 at this time, thus By controlling to adjust the rotational angle of block come the ball launch angle of regulating device.

Embodiments of the present invention: in the preparation process before service, starting the opening control valve 101, by the external world Air is pressed into the sliding slot 143 by the connecting tube 150, changes adjusting block around the angle of rotation of hinged place by regulating device Degree, closes the opening control valve 101 after reaching scheduled ball launch angle, starts the electromagnet 102, pass through the armature block Matching relationship between 103 and the electromagnet 102 drives the impact block 112 to be staggered with about the 159 baffle block, at this time Ball is hit from the right opening of the service chamber 105 by ball serving device, is at this time sent next table tennis by ball feeding device To position to be launched.

The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, by and the drive mechanism that gathers complete and hit Ball movement, wherein so that table tennis to be launched is successively fallen on position to be launched by the drive connection of wheel and rack, and according to The size of atmospheric pressure value, initial velocity when can adjust table tennis transmitting, and the rotational angle by controlling to adjust block is come regulating device Ball launch angle meets the launch requirements of the multi-angle of user.

Those skilled in the art can define, can in the case of not departing from overall spirit of the invention and design To make the various modifications for above embodiments, fall within the scope of protection of the present invention, protection scheme of the invention It is subject to claims appended hereto.

Claims (4)

1. a kind of method for carrying out table tennis teaching using ball serving device, which includes installation frame and is arranged in institute State the service chamber in installation frame and being open to the right, wherein be provided on the left of the service chamber in the installation frame Power mechanism, the power mechanism include the pulsometer being arranged on the left of the service chamber, the pulsometer right end and the hair A cavity is provided with and communicated between spherical cavity left end, the pulsometer left end is provided with the ventilation pipe being connected with the external world, described Ball feeding device is provided in service chamber upper end wall, the ball feeding device includes that connection is arranged on the upside of the service chamber in end wall Release channel, two sides are provided with the position-limit mechanism of rack-and-pinion group transmission up and down in the release channel, under the service chamber Ball serving device is provided in the wall of side, the ball serving device includes being connected to the electromagnetism being arranged on the downside of the service chamber in end wall Chamber is provided with the electromagnetic mechanism that can slide up and down in the electromagnetic cavity, and the electromagnetic mechanism right end, which is fixedly connected with, to be extended to the right Link mechanism, the link mechanism upper end be fixedly installed can in the service chamber impact block that horizontally slip, the peace The regulating device being provided on the downside of the ball serving device in installation frame, the regulating device include that setting is filled in the service The sliding slot of downside is set, the connecting tube being connected with the service chamber lower end wall, the sliding slot are provided in the wall of the sliding slot left end In be provided with the sliding block that can be horizontally slipped, an adjusting cavity is provided with and communicated on the right side of the service chamber lower end wall, the adjusting cavity is left It is rotatably assorted on the wall of side by hinge and an adjusting block is installed, the upper end of slide block face is rotatably assorted by hinge to be connected with Linkage, and the one end of the link mechanism far from the sliding block and the adjusting block lower end surface are rotatably assorted company by hinge It connects；This method is technically characterized in that in the preparation process before service, starts pulsometer, will be described in extraneous air indentation In sliding slot, adjusting block is changed around the rotational angle of hinged place by regulating device, starts electromagnetism after reaching scheduled ball launch angle Mechanism, and hit ball from the right opening of the service chamber by ball serving device, next is rattled by ball feeding device at this time Ball is sent to position to be launched.

2. a kind of method for carrying out table tennis teaching using ball serving device according to claim 1, wherein the release dress Setting mechanism includes the storage spherical cavity that connection is arranged in the upper end wall of the release channel, is placed in the storage spherical cavity several to be launched Table tennis, the installation frame upper surface is fixedly installed with entrance mounting blocks, penetratingly sets up and down in the entrance mounting blocks It is equipped with the release entrance being connected with the storage spherical cavity, is provided with main transmission chamber, the main transmission chamber on the left of the release channel Driving gear can be rotatably set by driving shaft between the end wall of front and back, fixation is additionally provided in the main transmission chamber and is wound around First torque spring of the driving shaft outer surface, the release channel right side are provided with driven chamber, pass through in the driven chamber Driven shaft is rotatably provided with driven gear, and fixation is additionally provided in the driven chamber and is wound around the driven shaft outer surface Second torque spring is provided with and communicated with left and right and extends and be located at the driving gear between the main transmission chamber and the driven chamber The main transmission slot of downside, and the main transmission slot is provided with and can control in the main transmission slot on the downside of the release channel It slides and the main transmission rack gear that is meshed with the driving gear and the driven gear, is provided in the main transmission rack gear Upper and lower perforative lower channel, is provided with and communicated with a link slot between the main transmission chamber lower end wall and the service chamber upper end wall, The drive block for being fixedly mounted on main transmission rack gear lower end is slidably fitted in the link slot, and the drive block lower end is stretched Enter in the service chamber, left and right is provided with and communicated between the main transmission chamber and the driven chamber and extends and is located at the driving tooth The driven slot of upside is taken turns, on the upside of the release channel, being provided in the driven slot can horizontally slip simultaneously the driven slot The driven rack gear being meshed with the driving gear and the driven gear is provided with up and down in the driven rack gear Upper channel, and the release channel, the lower channel and the upper channel mutually stagger in normal state；Its feature exists In: drive the drive block to slide to the right by the ball serving device, the drive block by the main transmission rack gear with it is described Meshing relation between driving gear drives the driven gear rotation, while the driven rack gear being driven to be moved to the left, described First torque spring and the torque spring are in twisting states, and the table tennis in the storage spherical cavity passes through described at this time Upper channel is fallen into the release channel, when the ball serving device restores initial position by first torque spring and The torsion of the torque spring drives the driving gear and the driven gear to rotate backward, at this time in the release channel The table tennis fallen in the service chamber by the lower channel, and be in battery.

3. a kind of method for carrying out table tennis teaching using ball serving device according to claim 1, wherein the service dress The seal washer including being fixed at the impact block left end is set, the impact block upper surface is fixedly installed and the transmission The transmitting block that block matches, the service chamber upper end wall is fixedly installed a baffle block being located on the right side of the impact block, described The electromagnetic block that can slide up and down is provided in electromagnetic cavity, the electromagnetic cavity lower end wall is fixedly installed with symmetrical electromagnet, The armature block that the electromagnetic block lower end surface is fixedly installed bilateral symmetry and matches with the electromagnet, the electromagnetic block lower end It is fixedly installed the first spring between face and the electromagnetic cavity lower end wall, is provided with and communicated in the service chamber lower end wall positioned at institute The shifting chute on the right side of electromagnetic cavity is stated, being provided in the shifting chute can horizontally slip and be fixed on the downside of the impact block Translational block is fixedly installed second spring symmetrical above and below between the translational block left end and shifting chute left end wall, described It is provided with the resetting block that can be horizontally slipped between end wall above and below shifting chute, the perforative stroke in left and right is provided in the resetting block Slot, and symmetrical third spring downwards, the shifting are fixedly installed between the resetting block right end and the shifting chute right end wall It is provided with and communicated with a limiting slot in end wall on the right side of dynamic slot, the limited block that can slide up and down, the shifting are provided in the limiting slot It is provided with and communicated with a lifting groove between dynamic slot and the electromagnetic cavity, the electromagnetic block right end is fixedly installed a liter extended to the right Bar drops, and the elevating lever right end is successively slidably disposed through the lifting groove, the translational block and the stroke groove and consolidates Surely it is connected on the left of the limited block；It is characterized by: the air pressure on the left of the seal washer starts institute when reaching predetermined value Electromagnet is stated, drives the electromagnetic block to move down by the gravitation between the electromagnet and the electromagnetic block, the electromagnetism Block drives the impact block to move down by the elevating lever, drives the impact block to be staggered up and down with the baffle block, leads to Cross air pressure the impact block driven to move right and hit the table tennis on the right side of the impact block, at this time the translational block right end with The resetting block left end abuts against, and is acted on by the elastic force of the second spring and the third spring and restores initial position, The electromagnet is closed at this time, the electromagnetic block moves up recovery initial position under the action of first spring force, Pressurization is re-started to prepare to bat next time.

4. a kind of method for carrying out table tennis teaching using ball serving device according to claim 1, wherein the adjusting dress The opening control valve including being arranged in the connecting tube is set, the link block that can be horizontally slipped is provided in the sliding slot, it is described Link block right end is fixedly connected with a connecting rod extended to the right, is provided with and communicated with mounting groove in the sliding slot upper end wall, described The hinged block being slidably fitted in sliding slot on the downside of the mounting groove, and the sliding block left end is fixed with the connecting rod right end Connection, the upper end of slide block face is fixedly installed a coordinating block, is provided with and communicated with one between the mounting groove and the adjusting cavity Mating cavity, the mounting groove are fixedly installed with a fixed block being located on the downside of the mating cavity, the fixation between end wall up and down It is provided with the sliding space of one or so extension in block, is provided with the sliding shoe that can be horizontally slipped in the sliding space, and described It is fixedly installed a connecting rod between sliding shoe and the coordinating block, is rotatably equipped with one on the sliding shoe and upwardly extends Support rod, and rotated and matched by hinge on the right side of the one end of the support rod far from the sliding shoe and the adjusting block lower end surface Close connection；It is characterized by: the opening control valve is opened in preparation process before service, it will be outer by the pulsometer The air on boundary is pressed into the sliding slot by the connecting tube drives the link block to move right, and the link block passes through described Connecting rod drives the sliding block to move right, and the sliding block drives the sliding shoe to move right by the connecting rod, at this time Drive the adjusting block around the angle of hinged place overturning setting by the support rod.