CN114712827A

CN114712827A - Volleyball serving device for simulating strong jump serving

Info

Publication number: CN114712827A
Application number: CN202210530420.5A
Authority: CN
Inventors: 刘尚礼
Original assignee: Suqian College
Current assignee: Suqian College
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-07-08
Anticipated expiration: 2042-05-16
Also published as: CN114712827B

Abstract

The invention discloses a volleyball serving device for simulating strong jump, which comprises a base, wherein a ball supply cylinder for volleyball to pass through is arranged in the base, the end part of the ball supply cylinder is provided with a fixed plate for placing a service assembly, the base is internally provided with a groove for storing volleyballs, a plurality of ball inlets are arranged on the surface of the base at equal intervals, a ball supply component for continuously conveying volleyballs to the ball supply cylinder is arranged in the base, when the rotating cylinder rotates, the abutting block on the inner wall of the rotating cylinder penetrates through the notch on the top plate, the abutting block abuts against the sliding plate, thereby the sliding plate moves downwards, when the rotary cylinder drives the abutting block sliding plate to separate, the elastic potential energy of the spring is converted into kinetic energy to drive the lifting plate at the end part of the sliding plate to lift, and then the volleyball falling into the lifting plate moves towards the bottom opening of the ball supply cylinder, so that the volleyball is conveniently conveyed to the top end along the inner wall of the ball supply cylinder by the matching conveying assembly.

Description

Volleyball serving device for simulating strong jump serving

Technical Field

The invention relates to the technical field of sports equipment, in particular to a volleyball serving device for simulating hard jumping serving.

Background

Volleyball sports is popular among many people as an important sport, and the volleyball sports often participates in volleyball sports, so that the body can develop higher potential strength speed, agility and endurance, has the functions of improving the cardiovascular system of people, promotes physical health, and cultivates the psychology of brave hardiness and cold peace and break and the team cooperation spirit. In recent years, volleyball sports are rapidly developed, many fans and sports enthusiasts start to learn volleyball, more and more volleyball enthusiasts learn professionalization in volleyball playing, and the ball catching is an important skill in volleyball training.

At present, the volleyball transmitter that has now on the market basically possesses and supplies ball mechanism, thereby accomplish the service through supplying ball mechanism cooperation service mechanism, throw, act such as smash, the trainee only needs to accomplish the training of catching the ball, top ball, but current supply ball mechanism, generally place the volleyball in the basket, serve ball to launch opening through lifting mechanism with ball lifting, when the volleyball in the basket is used up the back, need the manual work to add the volleyball again in the basket, the operation is comparatively troublesome, it is automatic lower.

To this end, we propose a volleyball dispenser for simulating a hard jump.

Disclosure of Invention

The invention aims to provide a volleyball serving device for simulating strong jump serving, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a volleyball ware of serving for simulating hard jump, includes the base, be provided with the confession ball section of thick bamboo that supplies the volleyball to pass through in the base, supply ball section of thick bamboo tip to be provided with the fixed plate that is used for placing the subassembly of serving, set up the recess that is used for depositing the volleyball in the base, a plurality of goal mouths have been seted up to base surface equidistance, be provided with in the base and be used for in succession to supplying the confession ball subassembly that the volleyball was carried to the ball section of thick bamboo.

Preferably, supply the ball subassembly still includes the connecting piece, connecting piece equidistance array sets up in the goal outside, connecting piece end connection has the piece of placing that is used for surrounding the court, be connected with the connection cloth between the connecting piece, be provided with the runner assembly who avoids the volleyball to block up in goal department in the base, be provided with the lifting subassembly that lifts up the volleyball in the base, supply to be provided with the conveying assembly who upwards carries the volleyball in the ball section of thick bamboo, base one side is provided with gas filled assembly.

Preferably, the rotating assembly further comprises a rotating cylinder, an opening communicated with the ball inlet is formed in the surface of the rotating cylinder, teeth are connected to one side of the rotating cylinder in an array mode, the surface of the base is connected with a first servo motor, and a fluted disc meshed with the teeth is connected to the end portion of a rotating shaft inside the first servo motor.

Preferably, the lifting assembly further comprises a top plate, a sliding groove is formed in the top plate, a guide post is connected between the top plate and the base, a sliding plate is connected to the outer wall of the guide post, a spring is connected to one side, located on the sliding plate, of the guide post, the sliding plate is connected to the center of the base, a lifting plate is connected to the center of the sliding plate, notches are formed in the top plate, located on two sides of the rotating cylinder and close to the rotating cylinder, and a butting block abutted to the sliding plate is connected to the inner wall of the rotating cylinder.

Preferably, the bottom of the base is in a shape of a slope which inclines downwards, and the cross section of the lifting plate is in a concave shape.

Preferably, the conveying assembly further comprises a connecting roller, the connecting roller array and the inner wall of the ball supply cylinder are connected, a transmission belt is connected to the outer side of the connecting roller, the end portion of the connecting roller, located at the bottom of the ball supply cylinder, is connected with a first gear, the base is located on one side of the first gear and is provided with a second servo motor, and the end portion of a rotating shaft inside the second servo motor is connected with a second gear meshed with the first gear.

Preferably, the inflation assembly still includes the air-blower, air-blower air outlet department is connected with connecting pipe one, the air channel has been seted up in the rotation section of thick bamboo, rotation section of thick bamboo one side is connected with the spliced pole with the air channel intercommunication, the gliding slide rail of cooperation spliced pole is seted up on the base surface, the rotation section of thick bamboo is located opening part both sides and sets up the air vent one with the air channel intercommunication, the base is located and sets up the air vent two that communicates between the goal and the air vent one between the base is located the air vent two, the base is located air vent two and locates to be connected with connecting pipe two, seted up cavity one in the connecting piece, the connecting piece tip is provided with the exhaust subassembly.

Preferably, the placing part is made of rubber, a folding pipe is arranged at the end part of the placing part, the connecting part is arranged in the folding pipe and is connected with a connecting cylinder, the connecting cylinder is communicated with a first cavity in the connecting part, and an air outlet is formed in the bottom of the connecting part.

Preferably, the surface of the folding pipe is provided with an air release port communicated with the folding pipe, and the end part of the connecting cylinder is connected with a circular plate used for blocking the air release port.

Preferably, the placing piece is made of rubber, a cavity II is formed in the placing piece, an air inlet used for injecting air is formed in one side of the placing piece, and the placing piece is located at the air inlet and connected with a sealing cover.

The invention has at least the following beneficial effects: the volleyball feeding assembly is placed on a court, volleyballs can be continuously conveyed into the volleyball feeding barrel, so that the volleyballs do not need to be added into the basketball basket again, the operation is simple and convenient, the automation degree is high, compared with the prior ball feeding mechanism, the volleyballs are generally placed in the basketball basket, the volleyballs are lifted to the launching port through the lifting mechanism to serve the volleyballs, when the volleyballs in the basketball basket are used up, the volleyballs need to be manually added into the basketball basket again, the operation is troublesome, and the automation is low, the volleyball feeding mechanism has the advantages that when the rotating barrel rotates, the abutting block on the inner wall of the rotating barrel is abutted against the sliding plate when the abutting block on the top plate passes through the notch on the top plate, so that the sliding plate moves downwards, when the rotating barrel drives the abutting block sliding plate to separate, the elastic potential energy of the spring is converted into kinetic energy to drive the lifting plate at the end part of the sliding plate to lift, so that the volleyball falling into the lifting plate moves towards the opening at the bottom of the volleyball feeding barrel, thereby being convenient for cooperate the conveying assembly to carry the volleyball to the top along supplying the section of thick bamboo inner wall.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view of the structure of the goal of the present invention;

FIG. 3 is a cross-sectional structural view of the present invention;

FIG. 4 is a block diagram of the lift assembly of the present invention;

FIG. 5 is a block diagram of the transfer assembly of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5 according to the present invention;

FIG. 7 is an exploded view of the present invention;

FIG. 8 is a top view of the present invention;

FIG. 9 is a block diagram of the exhaust assembly of the present invention;

fig. 10 is an enlarged structural view of part B of fig. 9 according to the present invention.

In the figure: 1-a base; 12-a ball supply cylinder; 2-a ball supply assembly; 13-fixing the plate; 11-a ball inlet; 31-a connector; 32-a placement member; 33-connecting cloth; 21-a lifting assembly; 22-a rotating assembly; 23-a delivery assembly; 4-an inflation assembly; 221-a rotating cylinder; 222-teeth; 223-fluted disc; 224-a servo motor one; 211-top plate; 212-a guide post; 213-a spring; 214-a sliding plate; 215-a butting block; 216-lift plate; 231-connecting rollers; 232-conveying belt; 233-gear one; 234-servo motor two; 235-gear two; 41-a blower; 42-connecting pipe I; 43-connecting column; 44-a slide rail; 45-vent one; 46-vent two; 49-connecting pipe two; 47-Cavity one; 48-an exhaust assembly; 481-folding tube; 482-a connector barrel; 483-air outlet; 484-circular plate; 485-relief port; 486-cavity two; 487-gas inlet; 488 — closure cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-10, the present invention provides a technical solution: the utility model provides a volleyball ware of serving for simulating hard jumping, includes base 1, be provided with the confession section of thick bamboo 12 that supplies the volleyball to pass through in the base 1, supply section of thick bamboo 12 upper and lower to be the open end, supply section of thick bamboo 12 tip to be provided with the fixed plate 13 that is used for placing the subassembly of serving, fixed plate 13 fixed connection and supply section of thick bamboo 12 open end, set up the recess that is used for depositing the volleyball in the base 1, a plurality of goal mouths 11 have been seted up to base 1 surface equidistance, be provided with in the base 1 and be used for in succession to supplying the supply ball subassembly 2 of 12 transport volleyballs, through will supplying ball subassembly 2 to place on the court, can be with the volleyball in succession to supplying section of thick bamboo 12 interior transport to the volleyball to need not to add the volleyball in the basket again, it is comparatively simple and convenient to operate, and degree of automation is high.

The volleyball supply assembly 2 further comprises a connecting piece 31, the connecting piece 31 is rotatably connected with the outer wall of the base 1, the connecting piece 31 is arranged outside the volleyball inlet 11 in an equidistant mode, the end of the connecting piece 31 is connected with a placing piece 32 used for surrounding the court, the placing piece 32 can prevent volleyballs from rolling out of the court, a connecting cloth 33 is connected between the connecting pieces 31, the connecting piece 31 can support the connecting cloth 33, so that volleyballs falling in the court can enter a groove in the base 1 through the volleyball inlet 11 through the connecting cloth 33, a rotating assembly 22 for preventing the volleyballs from being blocked at the volleyball inlet 11 is arranged in the base 1, the volleyball inlet 11 on the outer wall of the base 1 is allowed to enter the volleyball at one time through the rotating assembly 22, the volleyball in the base 1 is prevented from being too many volleyballs, the volleyball inlet 11 is prevented from being blocked, a lifting assembly 21 for lifting the volleyball is arranged in the base 1, and the volleyball can convey the volleyball supply barrel 12 to the open end through the volleyball supply assembly 21, thereby make things convenient for conveying subassembly 23 to carry the volleyball upwards, be provided with the conveying subassembly 23 with the volleyball upwards transport in the confession ball section of thick bamboo 12, base 1 one side is provided with gas charging component 4.

The rotating assembly 22 further comprises a rotating cylinder 221, the rotating cylinder 221 is rotatably connected with the base 1, an opening communicated with the ball inlet 11 is formed in the surface of the rotating cylinder 221, teeth 222 are connected to one side of the rotating cylinder 221 in an array mode, the teeth 222 are fixedly connected with the inner wall of the rotating cylinder 221, a first servo motor 224 is connected to the surface of the base 1, the first servo motor 224 is fixedly connected with the base 1, a fluted disc 223 meshed with the teeth 222 is connected to the end portion of a rotating shaft inside the first servo motor 224, the fluted disc 223 is driven to rotate by starting the first servo motor 224, the rotating cylinder 221 is driven to rotate by the fluted disc 223, the rotating cylinder 221 is further driven to rotate back and forth inside the base 1, when the opening in the rotating cylinder 221 is aligned with the ball inlet 11 in the base 1, volleyballs on the connecting cloth 33 are rolled into the ball inlet 11, and the trouble that the grooves in the base 1 are full of volleyballs due to too much dribbles is avoided.

The lifting assembly 21 further comprises a top plate 211, the top plate 211 is fixedly connected with the base 1, sliding grooves are formed in the top plate 211, three guide posts 212 are connected between the top plate 211 and the base 1, the guide posts 212 are fixedly connected between the top plate 211 and the bottom of the base 1, a sliding plate 214 is connected to the outer wall of each guide post 212, the sliding plate 214 is slidably connected with the guide posts 212, one side of each guide post 212, which is located on the sliding plate 214, is connected with a spring 213, the spring 213 is sleeved on the outer side of each guide post 212, one end of each spring 213 is fixed with the top plate 211, the other end of each spring 213 is fixed with the sliding plate 214, which is located in the center of the base 1, is connected with a lifting plate 216, the lifting plate 216 is fixedly connected with the sliding plate 214, notches are formed in the positions, which are close to the two sides of the rotating cylinder 221, the inner wall of the rotating cylinder 221 is connected with a butting block 215 butted against the sliding plate 214, and the butting block 215 is semicircular in shape, the circumferential array of the abutting blocks 215 is fixedly connected with the inner wall of the rotating cylinder 221 and the rotating cylinder 221, when the rotating cylinder 221 rotates, when the abutting blocks 215 on the inner wall of the rotating cylinder 221 penetrate through the notch in the top plate 211, the abutting blocks 215 abut against the sliding plate 214, so that the sliding plate 214 moves downwards, when the rotating cylinder 221 drives the sliding plate 214 of the abutting blocks 215 to separate, elastic potential energy of the spring 213 is converted into kinetic energy to drive the lifting plate 216 at the end part of the sliding plate 214 to lift, and accordingly volleyballs falling onto the lifting plate 216 move towards the bottom opening of the ball supply cylinder 12, and accordingly the conveying assembly 23 is matched to convey the volleyballs to the top end along the inner wall of the ball supply cylinder 12.

The bottom of the base 1 is in a slope shape with a downward slope, the slope shape is convenient for volleyballs to fall into the base 1 and then to be gathered at the lifting plate 216, the cross section of the lifting plate 216 is in a concave shape, and the lifting plate 216 is in a concave shape design, so that when the lifting plate 216 is lifted upwards, the volleyballs are not easy to fall out of the lifting plate 216.

The conveying assembly 23 further comprises a connecting roller 231, the connecting roller 231 is rotatably connected with the rotating cylinder 221, the array of the connecting roller 231 and the inner wall of the ball supply cylinder 12 are connected, a conveying belt 232 is connected to the outer side of the connecting roller 231, the end part of the connecting roller 231 positioned at the bottom of the ball supply cylinder 12 is connected with a first gear 233, the connecting roller 231 positioned at the bottom of the ball supply cylinder 12 penetrates through the outside of the ball supply cylinder 12 and is fixedly connected with the first gear 233, a second servo motor 234 is arranged on one side of the first gear 233 of the base 1 and is fixedly connected with the base 1, a second gear 235 meshed with the first gear 233 is connected to the end part of a rotating shaft inside the second servo motor 234, when the device operates, the second gear 235 at the end part of the rotating shaft inside the second servo motor 234 drives the first gear 233 on the connecting roller 231 positioned at the bottom of the ball supply cylinder 12 to rotate, so that the connecting roller 231 drives the conveying belt 232 to rotate, when the lifting plate 216 lifts the volleyball to the bottom of the ball supply cylinder 12, when the transmission belt 232 abuts against the transmission belt 232, the transmission belt 232 utilizes friction force to drive the volleyballs to be upwards transported along the inner wall of the ball supply barrel 12, so that the volleyballs are transported into a service assembly (not shown in the figure) on the fixed plate 13, and the service is facilitated.

The inflation assembly 4 further comprises an air blower 41, the air blower 41 is fixedly connected with the base 1, a first connecting pipe 42 is connected at an air outlet of the air blower 41, an air groove is formed in the rotating cylinder 221, one side of the rotating cylinder 221 is connected with a connecting post 43 communicated with the air groove, the first connecting pipe 42 is fixedly connected with the connecting post 43, a sliding rail 44 matched with the connecting post 43 to slide is arranged on the surface of the base 1, a first vent hole 45 communicated with the air groove is formed in two sides of the opening of the rotating cylinder 221, a second vent hole 46 communicated with the first vent hole 45 is formed between the ball inlets 11 of the base 1, a second connecting pipe 49 is connected at the second vent hole 46 of the base 1, the second connecting pipe 49 is fixedly connected with the connecting piece 31 and communicated with a first cavity 47 in the connecting piece 31, a first cavity 47 is formed in the connecting piece 31, and an exhaust assembly 48 is arranged at the end of the connecting piece 31, by starting the blower 41, the air is continuously conveyed to the inner source of the rotary cylinder 221 through the connecting pipe I42, the air is exhausted from the vent hole I45 after passing through the vent groove in the rotary cylinder 221, when the opening on the rotary cylinder 221 is aligned with the ball inlet 11, the servo motor I224 stops rotating, the air vent I45 is aligned with the air vent II 46, air enters the air vent II 46 after passing through the air vent I45, and is finally transmitted into the connecting piece 31 through the connecting pipe II 49, the connecting piece 31 is matched with the exhaust assembly 48 to enable the connecting piece 31 to be lifted upwards, thereby driving the connection cloth 33 between the connection member 31 to form an inclined surface inclined toward the ball inlet 11, thereby facilitating the volleyball to enter the goal 11, the connecting piece 31 without gas to enter is kept parallel to the ground, so that the volleyball can be truly rebounded when falling onto the connecting cloth 33, and the training reality is improved.

The placing piece 32 is made of rubber, a folding tube 481 is arranged at the end of the placing piece 32, which is positioned at the connecting piece 31, the bottom of the folding tube 481 is fixedly connected with the placing piece 32, the connecting piece 31 is positioned in the folding tube 481 and is connected with a connecting cylinder 482, the connecting cylinder 482 is fixedly connected with the connecting piece 31, the connecting cylinder 482 is communicated with a first cavity 47 inside the connecting piece 31, an air outlet 483 is arranged at the bottom of the connecting piece 31, when air is exhausted through the air outlet 483 at the bottom of the connecting cylinder 482 after passing through the connecting piece 31, the folding tube 481 drives the connecting piece 31 to rise upwards after the air rushes in, and meanwhile, the air rushed out by the connecting cylinder 482 reversely acts on the connecting piece 31, so that the connecting piece 31 continues to rise upwards, and further the connecting piece 31 rotates along the base 1, and volleyballs on the connecting cloth 33 roll down into the volleyball inlet 11.

The surface of the folding tube 481 is provided with an air release port 485 communicated with the inside of the folding tube 481, a circular plate 484 for blocking the air release port 485 is connected to an end of the connector 482, the circular plate 484 is fixedly connected to an end of the connector 482, when the connecting cylinder 482 moves upwards to make the circular plate 484 abut against the air release port 485, the folding tube 481 is in a closed state at this time, and gas is continuously injected, the circular plate 484 at the bottom of the connecting cylinder 482 is separated from the air release port 485 briefly and then continues to abut against the air release port 485 on the folding tube 481 upwards again, the connecting piece 31 drives the connecting cloth 33 to shake up and down through reciprocating motion, so that the volleyball can be accelerated to move towards the ball inlet 11, when the first vent hole 45 on the rotary cylinder 221 is separated from the second vent hole 46, the air inside the folding tube 481 is output outward through the air outlet 483, so that the folding tube 481 moves downward while the connection member 31 restores the original position.

The placing piece 32 is made of rubber, a cavity II 486 is formed in the placing piece 32, an air inlet 487 used for injecting air is formed in one side of the placing piece 32, the placing piece 32 is located at the position, where the air inlet 487 is connected with a sealing cover 488, the sealing cover 488 is opened to inject air into the placing piece 32, the placing piece 32 can be filled with air, so that a fixed shape is achieved, when the placing piece 32 is not used, the air in the placing piece 32 is discharged, the connecting piece 31 is rotated, and therefore the purpose of being convenient to store is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a volleyball ware of serving for simulating hard jump, includes base (1), be provided with in base (1) and supply a ball section of thick bamboo (12) that the volleyball passes through, supply ball section of thick bamboo (12) tip to be provided with fixed plate (13) that are used for placing the subassembly of serving, its characterized in that: the volleyball feeder is characterized in that a groove for storing volleyballs is formed in the base (1), a plurality of ball inlets (11) are formed in the surface of the base (1) at equal intervals, and a ball supply assembly (2) for continuously conveying the volleyballs to a ball supply barrel (12) is arranged in the base (1).

2. A volleyball server for simulating hard jump as claimed in claim 1, wherein: supply ball subassembly (2) still include connecting piece (31), connecting piece (31) equidistance array sets up in goal (11) outside, connecting piece (31) end connection has placing piece (32) that are used for surrounding the court, be connected with between connecting piece (31) and connect cloth (33), be provided with in base (1) and avoid volleyball rotating assembly (22) of locating the jam at goal (11), be provided with lifting subassembly (21) that lift the volleyball in base (1), be provided with in the confession ball section of thick bamboo (12) with the conveyor components (23) that the volleyball upwards carried, base (1) one side is provided with gas filled assembly (4).

3. A volleyball server for simulating hard jump as claimed in claim 2, wherein: the rotating assembly (22) further comprises a rotating cylinder (221), an opening communicated with the ball inlet (11) is formed in the surface of the rotating cylinder (221), teeth (222) are connected to one side of the rotating cylinder (221) in an array mode, a first servo motor (224) is connected to the surface of the base (1), and a fluted disc (223) meshed with the teeth (222) is connected to the end portion of a rotating shaft inside the first servo motor (224).

4. A volleyball server for simulating hard jump as claimed in claim 3, wherein: the lifting assembly (21) further comprises a top plate (211), a sliding groove is formed in the top plate (211), a guide post (212) is connected between the top plate (211) and the base (1), a sliding plate (214) is connected to the outer wall of the guide post (212), a spring (213) is connected to one side, located on the sliding plate (214), of the guide post (212), the sliding plate (214) is located at the center of the base (1), a lifting plate (216) is connected to the center of the base (1), the top plate (211) is located close to two sides of the rotating cylinder (221) and is provided with a notch, and a butt joint block (215) abutted to the sliding plate (214) is connected to the inner wall of the rotating cylinder (221).

5. A volleyball server for simulating hard jump according to claim 4, wherein: the bottom of the base (1) is in a slope shape inclining downwards, and the cross section of the lifting plate (216) is concave.

6. A volleyball server for simulating hard jump as claimed in claim 5, wherein: conveying component (23) still is including connecting roller (231), connect roller (231) array and supply ball section of thick bamboo (12) inner wall, it is connected with transmission band (232) to connect roller (231) outside, be located and supply the connection roller (231) end connection of ball section of thick bamboo (12) bottom to have gear one (233), base (1) is located gear one (233) one side and is provided with servo motor two (234), the inside pivot end connection of servo motor two (234) has gear two (235) with gear one (233) meshing.

7. A volleyball dispenser for simulating hard jumping service according to claim 6, wherein: the inflation assembly (4) also comprises a blower (41), a first connecting pipe (42) is connected at the air outlet of the blower (41), a vent groove is arranged in the rotating cylinder (221), one side of the rotating cylinder (221) is connected with a connecting column (43) communicated with the vent groove, the surface of the base (1) is provided with a slide rail (44) which is matched with the connecting column (43) to slide, the two sides of the opening of the rotating cylinder (221) are provided with a first vent hole (45) communicated with the vent groove, a second vent hole (46) communicated with the first vent hole (45) is formed between the ball inlets (11) of the base (1), a second connecting pipe (49) is connected to the position, located at the second vent hole (46), of the base (1), a first cavity (47) is formed in the connecting piece (31), and an exhaust assembly (48) is arranged at the end part of the connecting piece (31).

8. A volleyball dispenser for simulating hard jumping service according to claim 7, wherein: the placing piece (32) is made of rubber, a folding tube (481) is arranged at the end part, located on the connecting piece (31), of the placing piece (32), a connecting cylinder (482) is connected to the connecting piece (31) in the folding tube (481), the connecting cylinder (482) is communicated with a first cavity (47) in the connecting piece (31), and an air outlet (483) is formed in the bottom of the connecting piece (31).

9. A volleyball server for simulating hard jump as claimed in claim 8, wherein: the surface of the folding tube (481) is provided with an air release port (485) communicated with the inside of the folding tube (481), and the end part of the connecting cylinder (482) is connected with a circular plate (484) used for blocking the air release port (485).

10. A volleyball server for simulating hard jump as claimed in claim 9, wherein: the placing piece (32) is made of rubber, a cavity II (486) is formed in the placing piece (32), a gas inlet (487) used for injecting gas is formed in one side of the placing piece (32), and the placing piece (32) is located at the gas inlet (487) and is connected with a sealing cover (488).