CN110639190B

CN110639190B - Service equipment for table tennis training

Info

Publication number: CN110639190B
Application number: CN201910826391.5A
Authority: CN
Inventors: 刘迎迎; 彭新宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2021-03-05
Anticipated expiration: 2039-09-03
Also published as: CN110639190A

Abstract

The invention relates to a ball serving device, in particular to a ball serving device for table tennis training. The technical problem to be solved is as follows: the service equipment for table tennis training can replace people and people to carry out table tennis training, so that the required training effect is achieved, and the arrangement in time is free. The technical scheme is as follows: a service device for table tennis training comprises supporting legs, a frame, a cylinder body, an arc-shaped pipe, a first sliding block, a cylinder, a charging cylinder, an electric push rod, a movable rod, a knocking block, a material baffle plate, a first spring and the like; the left side and the right side of the outer bottom of the frame are symmetrically and fixedly connected with supporting legs. According to the table tennis bat, a proper amount of table tennis balls are poured into the charging barrel, the table tennis balls fall into the barrel body and contact with the bearing block, the electric push rod is started, the knocking block can move left and right to launch the table tennis balls out through the barrel body, people can hit the launched table tennis balls without training with others, the required training effect is achieved, and the arrangement is free in time.

Description

Service equipment for table tennis training

Technical Field

The invention relates to a ball serving device, in particular to a ball serving device for table tennis training.

Background

The table tennis is taken as a national ball in China and is deeply loved by the masses, but in order to improve the level of the table tennis or keep the original level, the table tennis training can be frequently carried out, usually people practice the table tennis training by sparing with others, because the levels of two people are different, people with good level can not obtain the required training effect, and the arrangement of the two people in time is not free, so people can specially find people with the level close to the level of the people to practice the table tennis training and say the time in advance, the operation is troublesome, and the training time is easily missed when other things happen.

Disclosure of Invention

In order to overcome the defects that the required training effect cannot be obtained by people with good levels due to different levels of two people, and the time arrangement of the two people is not free, the technical problem to be solved is that: the service equipment for table tennis training can replace people and people to carry out table tennis training, so that the required training effect is achieved, and the arrangement in time is free.

The technical scheme is as follows: a service device for table tennis training comprises supporting legs, a frame, a barrel, an arc-shaped tube, first sliding blocks, a cylinder, a charging barrel, an electric push rod, a movable rod, a knocking block, a material blocking plate, a first spring, a wedge-shaped block, a limiting plate, a movable block, a torsion spring, a clamping rod, a roller wheel, a second spring and a bearing mechanism, wherein the supporting legs are symmetrically and fixedly connected to the left side and the right side of the outer bottom of the frame, the barrel capable of moving table tennis is fixedly connected to the lower part of the outer right side of the frame, the bearing mechanism capable of supporting the table tennis is arranged on the right side of the bottom of the barrel, the arc-shaped tube capable of guiding the table tennis is arranged on the right side of the top of the barrel, a first opening is formed in the right side of the top of the barrel, the first opening is positioned below the arc-shaped tube and communicated with the arc-shaped tube, an annular sliding chute, the cylinder is arranged between the inner side surfaces of first sliding blocks at the left side and the right side, the top end of the cylinder is fixedly connected with a charging barrel capable of placing table tennis balls, the charging barrel is communicated with the cylinder, the middle of the top of the charging barrel is provided with a feed inlet capable of placing the table tennis balls, the lower part of the right side of the frame is provided with a first through hole with a guiding function, the first through hole is communicated with the cylinder, the movable rod is positioned in the first through hole, the right end of the movable rod is provided with a knocking block capable of launching the table tennis balls, the first spring is sleeved on the movable rod, one end of the first spring is fixedly connected with the left side surface of the knocking block, the other end of the first spring is fixedly connected with the right side surface outside the frame, the top of the knocking block is provided with a baffle plate capable of blocking the table tennis balls, the left part of the movable rod is provided with a first guide hole, the clamping rod is positioned, install bottom in the frame with gyro wheel complex wedge, the contact of the inclined plane of gyro wheel and wedge, left surface upper portion bolt has electric putter in the frame, and electric putter's telescopic link right-hand member rigid coupling has the limiting plate, articulates on electric putter's telescopic link bottom right side with kelly complex movable block, and the articulated department of telescopic link of movable block and electric putter is equipped with torque spring, and the movable block is located the kelly right side.

As further preferred scheme, bearing mechanism is including the bearing piece, the diaphragm, the third spring, the fly leaf, the leading wheel, montant and contact wheel, barrel bottom right side is opened has the second through-hole that plays the guide effect, the bearing piece that can support table tennis is located the second through-hole, bearing piece bottom rigid coupling has the diaphragm, all be connected with the third spring between diaphragm top left and right sides and the outer bottom of barrel, it has the second opening that plays the guide effect to open in the middle of the barrel bottom, second opening left side upper portion articulated have with strike piece complex fly leaf, what fly leaf top right side rotary type was equipped with the leading wheel, the montant is installed on fly leaf bottom right side, the contact wheel that is connected with of montant bottom rotary type, the contact wheel is located the diaphragm top rather than the contact.

As a further preferable scheme, the device also comprises a driving device which can enable the charging cylinder to rotate, the driving device comprises an annular gear ring, a second guide rod, a rack, a fourth spring, a cross rod, a wire guide wheel and a pull rope, the annular gear ring is arranged in the middle of the outer side surface of the charging cylinder, the upper part of the right side of the frame is provided with a second guide hole, the second guide rod is positioned in the second guide hole, install in second guide arm right-hand member with ring gear complex rack, rack and ring gear meshing, fourth spring housing is on the second guide arm, wherein one end and rack left end fixed connection of fourth spring, the other end and the outer right flank fixed connection of frame of fourth spring, right flank lower part rigid coupling has the horizontal pole that plays the supporting role in the frame, the horizontal pole is located first through-hole top, the wire wheel is installed to the horizontal pole left end, second guide arm left end is connected with the stay cord, the stay cord tail end is walked around the wire wheel and is connected with limiting plate right flank mid portion.

As a further preferable scheme, the device further comprises a fixing plate, an annular slide rail and two second slide blocks, wherein the fixing plate for supporting is arranged on the right side of the outer top of the cylinder body, the upper part of the left side surface of the fixing plate is provided with the two annular slide rails for guiding, the two second slide blocks are arranged on the annular slide rail in a sliding mode, the second slide blocks are in sliding fit with the annular slide rails, and the inner side surfaces of the second slide blocks on the left side and the right side are fixedly connected with the left side and the right side of.

As a further preferable scheme, the rack fixing device further comprises an inclined plate, a third guide rod and a fifth spring, wherein the upper part of the right side surface of the fixing plate is fixedly connected with the two third guide rods, the inclined plate which plays a role in guiding is arranged between the two third guide rods, the upper side and the lower side of the inclined plate are symmetrically provided with the third guide holes, the third guide rods are positioned in the third guide holes, the fifth spring is sleeved on the third guide rods, one end of the fifth spring is fixedly connected with the left side surface of the inclined plate, the other end of the fifth spring is fixedly connected with the right side surface of the fixing plate, and the middle part of the front side surface of the.

The invention has the following advantages: according to the table tennis bat, a proper amount of table tennis balls are poured into the charging barrel, the table tennis balls fall into the barrel and contact with the bearing block, the electric push rod is started, the knocking block can move left and right to launch the table tennis balls through the barrel, people can hit the launched table tennis balls without training the table tennis balls with other people, the required training effect is achieved, the table tennis bat is free in time arrangement, the charging barrel can rotate to shake the table tennis balls during the service time through the driving device, and the table tennis balls cannot fall out.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is an enlarged schematic view of part a of the present invention.

Fig. 3 is an enlarged view of part B of the present invention.

Wherein: 1. the support leg, 2, a frame, 3, a cylinder body, 4, an arc-shaped pipe, 5, an annular sliding groove, 6, a first sliding block, 7, a cylinder, 8, a charging barrel, 9, a feeding hole, 10, an electric push rod, 11, a first through hole, 12, a movable rod, 13, a knocking block, 131, a striker plate, 14, a first spring, 15, a first opening, 16, a wedge-shaped block, 17, a limiting plate, 18, a movable block, 19, a torsion spring, 20, a first guide hole, 21, a clamping rod, 22, a roller, 23, a second spring, 24, a supporting mechanism, 241, a second through hole, 242, a supporting block, 243, a transverse plate, 244, a third spring, 245, a second opening, 246, a movable plate, 247, a guide wheel, 248, a vertical rod, 249, a contact wheel, 25, a driving device, 251, an annular gear ring, 252, a second guide hole, 253, a second guide rod, 254, a rack, 255, a fourth spring, 256, a transverse rod, 257 and a guide wheel, 258. the device comprises a pull rope, 26 a fixing plate, 27 an annular slide rail, 28 a second slide block, 29 a sloping plate, 30 a third guide hole, 31 a third guide rod, 32 a fifth spring.

Detailed Description

The invention is further illustrated by the following specific examples in which, unless otherwise explicitly stated and limited, terms such as: the arrangement, installation, connection are to be understood broadly, for example, they may be fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

A service device for table tennis training is disclosed, as shown in figure 1-3, comprising a leg 1, a frame 2, a cylinder 3, an arc tube 4, a first slider 6, a cylinder 7, a charging cylinder 8, an electric push rod 10, a movable rod 12, a knocking block 13, a material baffle 131, a first spring 14, a wedge block 16, a limit plate 17, a movable block 18, a torsion spring 19, a clamping rod 21, a roller 22, a second spring 23 and a supporting mechanism 24, wherein the leg 1 is symmetrically and fixedly connected to the left and right sides of the outer bottom of the frame 2, the frame 2 is connected with the leg 1 by a bolt connection mode, the cylinder 3 capable of moving table tennis is fixedly connected to the lower part of the outer right side of the frame 2, the supporting mechanism 24 capable of supporting table tennis is arranged on the right side of the bottom of the cylinder 3, the arc tube 4 capable of guiding table tennis is arranged on the right side of the top of the cylinder 3, a first opening 15 is arranged on the right side of the top of the cylinder 3, the first opening, an annular sliding chute 5 with a guiding function is arranged at the upper part in the arc-shaped pipe 4, two first sliding blocks 6 are arranged in the annular sliding chute 5 in a sliding mode, the first sliding blocks 6 are in sliding fit with the annular sliding chute 5, a cylinder 7 is arranged between the inner side surfaces of the first sliding blocks 6 at the left side and the right side, a charging barrel 8 capable of placing table tennis balls is fixedly connected to the top end of the cylinder 7, the cylinder 7 is connected with the charging barrel 8 in a bolt connection mode, the charging barrel 8 is communicated with the cylinder 7, a feeding port 9 capable of placing table tennis balls is arranged in the middle of the top of the charging barrel 8, a first through hole 11 with a guiding function is arranged at the lower part of the right side of the frame 2, the first through hole 11 is communicated with the inside of the barrel body 3, a movable rod 12 is arranged in the first through hole 11, a knocking block 13 capable of placing table tennis balls is arranged at the right end of the movable rod 12, one end of a first spring 14 is fixedly connected with the left side surface of a knocking block 13, the other end of the first spring 14 is fixedly connected with the outer right side surface of a frame 2, a material baffle plate 131 capable of blocking table tennis balls is installed at the top of the knocking block 13, the knocking block 13 is connected with the material baffle plate 131 in a welding connection mode, a first guide hole 20 is formed in the left part of a movable rod 12, a clamping rod 21 is located in the first guide hole 20, a roller 22 is rotatably installed at the bottom end of the clamping rod 21, a second spring 23 is wound between the lower part of the clamping rod 21 and the bottom of the movable rod 12, a wedge block 16 matched with the roller 22 is installed at the inner bottom of the frame 2, the roller 22 is in contact with an inclined plane of the wedge block 16, an electric push rod 10 is bolted at the upper part of the inner left side surface of the frame 2, a limit plate 17 is fixedly connected to the right end of a telescopic rod of the electric push rod 10, a movable block 18 matched with the clamping rod 21, the movable block 18 is located on the right side of the catch lever 21.

Example 2

A service device for table tennis training is disclosed, as shown in figure 1-3, comprising a supporting leg 1, a frame 2, a cylinder 3, an arc tube 4, a first slide block 6, a cylinder 7, a charging cylinder 8, an electric push rod 10, a movable rod 12, a knocking block 13, a material baffle 131, a first spring 14, a wedge block 16, a limit plate 17, a movable block 18, a torsion spring 19, a clamping rod 21, a roller 22, a second spring 23 and a supporting mechanism 24, wherein the supporting leg 1 is symmetrically and fixedly connected with the left and right sides of the outer bottom of the frame 2, the cylinder 3 capable of moving table tennis is fixedly connected with the lower part of the outer right side surface of the frame 2, the supporting mechanism 24 capable of supporting the table tennis is arranged on the right side of the bottom of the cylinder 3, the arc tube 4 capable of guiding the table tennis is arranged on the right side of the top of the cylinder 3, a first opening 15 is arranged on the right side of the top of the cylinder 3, the first opening 15 is arranged below the arc tube 4 and communicated with, two first sliding blocks 6 are arranged in the annular sliding groove 5 in a sliding mode, the first sliding blocks 6 are in sliding fit with the annular sliding groove 5, a cylinder 7 is arranged between the inner side surfaces of the first sliding blocks 6 on the left side and the right side, the top end of the cylinder 7 is fixedly connected with a charging barrel 8 capable of placing table tennis balls, the charging barrel 8 is communicated with the cylinder 7, a feeding hole 9 capable of placing the table tennis balls is formed in the middle of the top of the charging barrel 8, a first through hole 11 with a guiding effect is formed in the lower right side of the frame 2, the first through hole 11 is communicated with the cylinder body 3, a movable rod 12 is arranged in the first through hole 11, a knocking block 13 capable of launching the table tennis balls is arranged at the right end of the movable rod 12, a first spring 14 is sleeved on the movable rod 12, one end of the first spring 14 is fixedly connected with the left side surface of the knocking block 13, the other end of the first spring 14 is fixedly connected with the right, open movable rod 12 left part has first guide hole 20, kelly 21 is located first guide hole 20, the installation in kelly 21 bottom of gyro wheel 22 rotary type, the second spring 23 has been around having been connected between kelly 21 lower part and the 12 bottom of movable rod, install bottom in frame 2 with gyro wheel 22 complex wedge 16,

gyro wheel

22 and 16 inclined plane contacts of wedge, frame 2 interior left surface upper portion bolt has electric putter 10, electric putter 10's telescopic link right-hand member rigid coupling has limiting plate 17, articulate on electric putter 10's telescopic link bottom right side with kelly 21 complex movable block 18, movable block 18 is equipped with torque spring 19 with electric putter 10's telescopic link articulated department, movable block 18 is located kelly 21 right side.

The supporting mechanism 24 comprises a supporting block 242, a transverse plate 243, a third spring 244, a movable plate 246, a guide wheel 247, a vertical rod 248 and a contact wheel 249, the right side of the bottom of the barrel 3 is provided with a second through hole 241 for guiding, the supporting block 242 capable of supporting table tennis is positioned in the second through hole 241, the bottom of the supporting block 242 is fixedly connected with the transverse plate 243, the supporting block 242 is connected with the transverse plate 243 by welding, the third spring 244 is connected between the left side and the right side of the top of the transverse plate 243 and the outer bottom of the barrel 3, the transverse plate 243 and the barrel 3 are both connected with the third spring 244 by welding, the middle of the bottom of the barrel 3 is provided with a second opening 245 for guiding, the upper part of the left side of the second opening 245 is hinged with the movable plate 246 matched with the knocking block 13, the guide wheel 247 is arranged on the right side of the top of the movable plate 246, the vertical rod 248 is installed on the right side of, the bottom end of the vertical rod 248 is rotatably connected with a contact wheel 249, and the contact wheel 249 is positioned above the horizontal plate 243 to be in contact with the horizontal plate 243.

Example 3

gyro wheel

The supporting mechanism 24 comprises a supporting block 242, a transverse plate 243, a third spring 244, a movable plate 246, a guide wheel 247, a vertical rod 248 and a contact wheel 249, the right side of the bottom of the cylinder 3 is provided with a second through hole 241 for guiding, the supporting block 242 capable of supporting table tennis balls is positioned in the second through hole 241, the bottom of the supporting block 242 is fixedly connected with the transverse plate 243, the third spring 244 is connected between the left side and the right side of the top of the transverse plate 243 and the outer bottom of the cylinder 3, the middle of the bottom of the cylinder 3 is provided with a second opening 245 for guiding, the upper part of the left side of the second opening 245 is hinged with the movable plate 246 matched with the knocking block 13, the guide wheel 247 is rotatably arranged on the right side of the top of the movable plate 246, the vertical rod 248 is mounted on the right side of the bottom of the movable plate 246, the.

The device also comprises a driving device 25 which can make the charging cylinder 8 rotate, the driving device 25 comprises an annular gear ring 251, a second guide rod 253, a rack 254, a fourth spring 255, a cross rod 256, a wire guide wheel 257 and a pull rope 258, the annular gear ring 251 is arranged in the middle of the outer side surface of the charging cylinder 8, the annular gear ring 251 is connected with the charging cylinder 8 in a bolt connection mode, the upper part of the right side of the frame 2 is provided with a second guide hole 252, the second guide rod 253 is positioned in the second guide hole 252, the rack 254 matched with the annular gear ring 251 is arranged at the right end of the second guide rod 253, the rack 254 is connected with the second guide rod 253 in a welding connection mode, the rack 254 is meshed with the annular gear ring 251, the fourth spring 255 is sleeved on the second guide rod 253, one end of the fourth spring 255 is fixedly connected with the left end of the rack 254, the other end of the fourth spring 255 is fixedly connected with the outer right side surface of, frame 2 is connected with horizontal pole 256 through welded connection's mode, and horizontal pole 256 is located first through-hole 11 top, and wire wheel 257 is installed to the 256 left end of horizontal pole, and second guide arm 253 left end is connected with stay cord 258, and the stay cord 258 tail end is walked around wire wheel 257 and is connected with limiting plate 17 right side middle part.

Example 4

gyro wheel

The device also comprises a driving device 25 capable of rotating the charging barrel 8, the driving device 25 comprises an annular gear ring 251, a second guide rod 253, a rack 254, a fourth spring 255, a cross rod 256, a wire guide wheel 257 and a pull rope 258, the annular gear ring 251 is arranged in the middle of the outer side surface of the charging barrel 8, the upper part of the right side of the frame 2 is provided with a second guide hole 252, the second guide rod 253 is positioned in the second guide hole 252, the rack 254 matched with the annular gear ring 251 is arranged at the right end of the second guide rod 253, the rack 254 is meshed with the annular gear ring 251, the fourth spring 255 is sleeved on the second guide rod 253, one end of the fourth spring 255 is fixedly connected with the left end of the rack 254, the other end of the fourth spring 255 is fixedly connected with the outer right side surface of the frame 2, the lower part of the inner right side surface of the frame 2 is fixedly connected with the cross rod 256 for supporting, the cross rod 256 is positioned above the, the tail end of the pull rope 258 bypasses the guide roller 257 and is connected with the middle part of the right side surface of the limit plate 17.

Still including fixed plate 26, annular slide rail 27 and second slider 28, fixed plate 26 that plays the supporting role is installed in the outer top right side of barrel 3, fixed plate 26 is connected with barrel 3 through welded connection's mode, two annular slide rails 27 that play the guide effect are installed on fixed plate 26 left surface upper portion, fixed plate 26 is connected with annular slide rail 27 through bolted connection's mode, annular slide rail 27 is gliding to be equipped with two second sliders 28, second slider 28 and annular slide rail 27 sliding fit, the medial surface of left and right sides second slider 28 and the lateral surface left and right sides fixed connection of charging barrel 8, second slider 28 is connected with charging barrel 8 through bolted connection's mode.

Example 5

gyro wheel

The device is characterized by further comprising a fixing plate 26, an annular slide rail 27 and second slide blocks 28, wherein the fixing plate 26 for supporting is mounted on the right side of the outer top of the barrel 3, the upper portion of the left side face of the fixing plate 26 is provided with the two annular slide rails 27 for guiding, the two second slide blocks 28 are arranged on the annular slide rails 27 in a sliding mode, the second slide blocks 28 are in sliding fit with the annular slide rails 27, and the inner side faces of the second slide blocks 28 on the left side and the right side are fixedly connected with the left side and the right side.

The rack is characterized by further comprising an inclined plate 29, third guide rods 31 and a fifth spring 32, the two third guide rods 31 are fixedly connected to the upper portion of the right side face of the fixing plate 26, the fixing plate 26 is connected with the third guide rods 31 in a welding connection mode, the inclined plate 29 playing a guiding role is arranged between the two third guide rods 31, the connecting inclined plate 29 is connected with the third guide holes 30 in a welding connection mode, the third guide rods 31 are located in the third guide holes 30, the fifth spring 32 is sleeved on the third guide rods 31, one end of the fifth spring 32 is fixedly connected with the left side face of the inclined plate 29, the other end of the fifth spring 32 is fixedly connected with the right side face of the fixing plate 26, the middle portion of the front side face of the inclined plate 29 is fixedly connected with the right side face of the rear side face of the rack 254.

Initially, the second spring 23 is in a compressed state, firstly, an operator pours a proper amount of table tennis balls into the charging barrel 8 through the feeding hole 9, the table tennis balls in the charging barrel 8 fall into the arc tube 4 through the cylinder 7, the table tennis balls in the arc tube 4 fall onto the supporting mechanism 24 through the first opening 15, and the telescopic rod of the electric push rod 10 can be started to shorten, the telescopic rod of the electric push rod 10 shortens to drive the movable block 18 to move leftward, the limiting plate 17 limits the movable block 18, the movable block 18 moves leftward to drive the clamping rod 21 to move leftward, the clamping rod 21 moves leftward to drive the roller 22 to move leftward, due to the action of the second spring 23, the clamping rod 21 simultaneously moves downward to drive the roller 22 to move downward to always contact with the wedge 16, the clamping rod 21 moves leftward to drive the movable rod 12 to move leftward, the movable rod 12 moves leftward to drive the knocking block 13 to move leftward, and the first spring 14 is compressed, the striking block 13 moves leftwards to drive the material baffle plate 131 to move leftwards, when the clamping rod 21 moves leftwards and does not contact with the movable block 18, the electric push rod 10 is closed, due to the action of the first spring 14, the striking block 13 moves rightwards to drive the material baffle plate 131 to move rightwards, the striking block 13 moves rightwards to be matched with the supporting mechanism 24, the supporting mechanism 24 does not support table tennis balls, then the striking block 13 moves rightwards to launch the table tennis balls from the barrel 3, the material baffle plate 131 blocks the first opening 15, a trainer can strike the launched table tennis balls, then the telescopic rod of the electric push rod 10 is started to extend, the telescopic rod of the electric push rod 10 extends to drive the movable block 18 to move rightwards, when the movable block 18 moves rightwards to contact with the clamping rod 21, due to the action of the torsion spring 19, the movable block 18 slides on the clamping rod 21, when the movable block 18 moves to the right side of the clamping rod, and then the movable block 18 moves left and drives the card pole 21 and move left, make and strike piece 13 and move left and drive striker plate 131 and move left, striker plate 131 moves left and does not block first opening 15, and simultaneously, strike piece 13 not cooperate with supporting mechanism 24, and then the table tennis in the arc pipe 4 drops to the barrel 3 in through first opening 15 and contacts with supporting mechanism 24, when card pole 21 moves left and does not contact with movable block 18 once more, strike piece 13 and move right and launch the table tennis once more, training personnel can hit the training once more to the table tennis of launching, and simultaneously, the rotatable charging barrel 8 of operating personnel makes the table tennis rock, can prevent that the table tennis can not drop in charging barrel 8. When the trainee trains for a suitable time, the electric putter 10 is turned off.

When the table tennis ball falls into the barrel body 3 through the first opening 15, the table tennis ball falls onto the supporting block 242, and further when the knocking block 13 moves rightwards, the knocking block 13 moves rightwards and contacts with the movable plate 246 to swing downwards, the movable plate 246 swings downwards to drive the vertical rod 248 to move downwards, the vertical rod 248 moves downwards to drive the transverse plate 243 to move downwards, the third spring 244 stretches, the transverse plate 243 moves downwards to drive the supporting block 242 to move downwards, the supporting block 242 moves downwards to not support the table tennis ball, and then the knocking block 13 moves rightwards to launch the table tennis ball through the barrel body 3 through the guide wheel 247. When the knocking block 13 moves leftward, the knocking block 13 does not contact with the movable plate 246, due to the action of the third spring 244, the horizontal plate 243 moves upward to drive the supporting block 242 to move upward and return to the original position, meanwhile, the horizontal plate 243 also drives the vertical rod 248 to move upward through the contact wheel 249, and the vertical rod 248 moves upward to drive the movable plate 246 to swing upward and return to the original position.

When a trainer trains through the device, due to the action of the fourth spring 255, the telescopic rod of the electric push rod 10 stretches and retracts and drives the second guide rod 253 to move left and right through the pull rope 258, the second guide rod 253 moves left and right to drive the rack 254 to move left and right, the rack 254 moves left and right to drive the annular gear ring 251 to rotate in a positive and negative alternating manner, and the annular gear ring 251 rotates in a positive and negative alternating manner to drive the charging barrel 8 to rotate in a positive and negative alternating manner to enable the table tennis to. When the training of the trainee is completed, the electric push rod 10 is closed, and the charging barrel 8 stops rotating forward and backward alternately. So, need not operating personnel and rotate charging barrel 8 manually, labour saving and time saving.

When the charging barrel 8 rotates forwards and backwards alternately, the annular slide rail 27 and the second slide block 28 play a role in guiding, so that the charging barrel 8 rotates forwards and backwards alternately more stably.

When the rack 254 moves left and right, the rack 254 drives the inclined plate 29 to move left and right, the fifth spring 32 continuously extends and contracts, and the inclined plate 29 and the fifth spring 32 are matched to enable the rack 254 to move left and right more stably.

While the disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Accordingly, the scope of the present disclosure should not be limited to the above-described embodiments, but should be defined not only by the appended claims, but also by equivalents thereof.

Claims

1. A service device for table tennis training comprises supporting legs, a frame, a cylinder body, an arc-shaped pipe, a first sliding block, a cylinder and a charging cylinder, wherein the supporting legs are symmetrically and fixedly connected to the left side and the right side of the outer bottom of the frame, the cylinder body capable of moving table tennis is fixedly connected to the lower part of the outer right side of the frame, can install in barrel top right side to the arc tube of table tennis direction, open barrel top right side has first opening, first opening is located arc tube below rather than the intercommunication, open the annular spout that has the guide effect on the intraductal upper portion of arc, annular spout inward sliding formula be equipped with two first sliders, sliding fit in first slider and the annular spout, the drum is installed between the first slider medial surface of the left and right sides, drum top rigid coupling has the section of thick bamboo that can make the table tennis place, intercommunication in section of thick bamboo and the drum, open the feed inlet that has to make the table tennis put into in the middle of the section of thick bamboo top, its characterized in that: the table tennis ball striking machine further comprises an electric push rod, a movable rod, a striking block, a material blocking plate, a first spring, a wedge block, a limiting plate, the movable block, a torsion spring, a clamping rod, a roller wheel, a second spring and a bearing mechanism, wherein the bearing mechanism capable of supporting table tennis balls is arranged on the right side of the bottom of a cylinder body, a first through hole with a guiding function is formed in the lower portion of the right side of a frame, the first through hole is communicated with the inside of the cylinder body, the movable rod is positioned in the first through hole, a striking block capable of emitting the table tennis balls is arranged at the right end of the movable rod, the first spring is sleeved on the movable rod, one end of the first spring is fixedly connected with the left side face of the striking block, the other end of the first spring is fixedly connected with the outer right side face of the frame, the material blocking plate capable of blocking the table tennis balls is arranged at the top of the striking block, a first guide hole is formed in the left portion of the, the supporting mechanism comprises a supporting block, a transverse plate, a third spring, a movable plate, a guide wheel, a vertical rod and a contact wheel, wherein the right side of the bottom of the cylinder body is provided with a second through hole for guiding, the supporting block for supporting the table tennis is positioned in the second through hole, the transverse plate is fixedly connected with the bottom of the supporting block, the third spring is connected between the left side and the right side of the top of the transverse plate and the outer bottom of the cylinder body, the middle of the bottom of the cylinder body is provided with a second opening for guiding, and the upper part of the left side of the second opening is hinged with a movable plate matched with the knocking block, the device comprises a movable plate, a vertical rod, a contact wheel, a driving device and a fourth spring, wherein the guide wheel is rotatably arranged on the right side of the top of the movable plate, the vertical rod is arranged on the right side of the bottom of the movable plate, the contact wheel is rotatably connected with the bottom end of the vertical rod, the contact wheel is positioned above a transverse plate and is contacted with the transverse plate, the driving device can enable a charging barrel to rotate, the driving device comprises an annular gear ring, a second guide rod, a rack, the fourth spring, a transverse rod, a wire guide wheel and a pull rope, the annular gear ring is arranged in the middle of the outer side surface of the charging barrel, a second guide hole is formed in the upper portion of the right side of a frame, the second guide rod is positioned in the second guide hole, the rack matched with the annular gear ring is arranged at the right end of the second guide rod and is meshed with the annular gear ring, the fourth spring is sleeved, the wire guide wheel is installed at the left end of the cross rod, the pull rope is connected to the left end of the second guide rod, and the tail end of the pull rope bypasses the wire guide wheel to be connected with the middle of the right side face of the limiting plate.

2. A service apparatus for table tennis training as defined in claim 1, wherein: the device is characterized by further comprising a fixing plate, annular slide rails and second slide blocks, wherein the fixing plate for supporting is mounted on the right side of the outer top of the barrel, the two annular slide rails for guiding are mounted on the upper portion of the left side face of the fixing plate, the two second slide blocks are arranged on the annular slide rails in a sliding mode, the second slide blocks are in sliding fit with the annular slide rails, and the inner side faces of the second slide blocks on the left side and the right side are fixedly connected with the left side and the right side of.

3. A service apparatus for table tennis training as defined in claim 2, wherein: the rack is characterized by further comprising an inclined plate, a third guide rod and a fifth spring, wherein the two third guide rods are fixedly connected to the upper portion of the right side face of the fixing plate, the inclined plate which plays a guiding role is arranged between the two third guide rods, third guide holes are symmetrically formed in the upper side and the lower side of the inclined plate, the third guide rods are located in the third guide holes, the fifth spring is sleeved on the third guide rods, one end of the fifth spring is fixedly connected with the left side face of the inclined plate, the other end of the fifth spring is fixedly connected with the right side face of the fixing plate, and the middle of the front side face of the inclined plate is.