CN218248424U - Service robot - Google Patents

Abstract

The utility model discloses a pitching machine, include: the ball pitching machine comprises a base and a pitching assembly, wherein a rack is arranged on the base, a linear driving mechanism and a driving mechanism are both arranged on the rack, a pitching wheel is rotatably supported on the rack, and the other pitching wheel is arranged at the output end of the linear driving mechanism; and is vertical to the axis of the ball serving wheel; the driving mechanism is respectively in transmission connection with the two service wheels, and the rotation directions of the two service wheels are opposite. The ball serving assembly in the utility model comprises two ball serving wheels with opposite rotation directions, and a ball body enters from one side between the two fast rotating ball serving wheels and is quickly thrown out from the other side between the two ball serving wheels, thereby realizing the ball serving effect; linear drive mechanism can adjust the distance between two service wheels to make this service robot can be applicable to the spheroid of different diameters, this service robot simple structure adopts lithium cell drive, and the time of endurance is long, is applicable to multiple use places.

Description

Service robot

Technical Field

The utility model relates to a sports training equipment field, more specifically say so and relate to a service robot.

Background

The pitching machine is ball training equipment which throws balls out in a mechanical mode and is used for replacing manual pitching, and different types of balls are matched with the pitching machine due to different outer diameters of different balls; in addition, although the existing service robot in the market has a good service effect, the service mechanism and the angle adjusting mechanism for service are complex, the overall size is large, the service robot is not easy to move, an external power supply is required, the service robot is not suitable for daily outdoor carrying and use, and the use scene is limited.

Therefore, how to provide a service robot, which can serve balls with different diameters, and meanwhile, the service robot has the advantages of convenient adjustment of service angle, small overall size, no need of an external power supply, and portability, and is a problem that needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a service robot.

In order to realize the purpose, the utility model adopts the following technical scheme:

a ball serving machine comprising:

a base;

the ball serving assembly comprises a rack, a linear driving mechanism, a driving mechanism and two ball serving wheels, the rack is mounted above the base, the linear driving mechanism and the driving mechanism are mounted on the rack, the two ball serving wheels are provided with parallel axial leads and aligned end parts, one ball serving wheel is rotatably supported on the rack, the other ball serving wheel is mounted at the output end of the linear driving mechanism, and the two ball serving wheels are both arranged above the rack; the moving direction of the output end of the linear driving mechanism is parallel to a plane defined by the axes of the two service wheels and is vertical to the axes of the service wheels; the driving mechanism is in transmission connection with the two service wheels respectively, and the rotation directions of the two service wheels are opposite.

According to the technical scheme, compared with the prior art, the utility model discloses a service robot, the service robot has the advantages that the service robot is provided with the service assembly above the base, the service assembly comprises two service wheels with opposite turning directions, the shortest distance between the two service wheels is slightly smaller than the minimum outer diameter of a ball, the ball enters from one side between the two service wheels rotating rapidly and is rapidly ejected from the other side between the two service wheels, so that the service effect is realized; through setting up linear drive mechanism, linear drive mechanism can adjust the distance between two service wheels to make this service robot can be applicable to the spheroid of different diameters.

Preferably, the machine frame, the linear driving mechanism and the driving mechanism are all limited in the machine frame, the lower end of the machine frame is connected with the base, a strip-shaped through hole is formed in the upper end face of the machine frame, the hole length direction of the strip-shaped through hole is parallel to the moving direction of the output end of the linear driving mechanism, wheel shafts of the two service wheels penetrate through the strip-shaped through hole, and the two service wheels are all limited outside the machine frame. Parts such as frame, straight line actuating mechanism and actuating mechanism can hold in the casing, play the technical effect of protection and compact structure arrangement to, the outer parietal of service wheel and casing has the interval, and the spheroid's of the biggest external diameter radius value less than or equal to above-mentioned interval of this service machine ability adaptation ensures that the outer parietal of casing can not produce the interference to the service of service wheel.

Preferably, two shields are symmetrically fixed on the outer top wall of the casing, the strip-shaped through hole and the two service wheels are limited between the two shields, a ball inlet and outlet channel is defined between the two shields, one end of the ball inlet and outlet channel is a ball inlet, and the other end of the ball inlet and outlet channel is a ball outlet. The ball inlet and the ball outlet can be injectd to the guard shield, and the operator of being convenient for utilizes this service robot to carry out the service operation, and simultaneously, the guard shield can prevent personnel's hand and service wheel contact, avoids taking place personal safety accident.

Preferably, the base includes bottom plate, universal wheel, sleeve pipe, inserted bar and top tight screw, a plurality of universal wheels that have brake function are installed to the lower facial features equipartition of bottom plate, the last face vertical fixation of bottom plate has the sleeve pipe, inserted bar one end with the casing lower bottom wall is articulated and the articulated center of the two with the hole length direction of strip through-hole is parallel, the other end of inserted bar is inserted and is established extremely in the sleeve pipe, sheathed tube lateral wall trompil is equipped with soon top tight screw, top tight screw can push up tightly the inserted bar. The design of sleeve pipe and inserted bar, simple structure on the one hand, on the other hand can realize the adjustment of service wheel height effectively.

Preferably, the positioning device further comprises a positioning bolt and an arc-shaped plate, one arc-shaped plate is vertically fixed on the outer bottom wall of the casing, the hinge center of the inserted rod and the casing is perpendicular to the plate surface of the arc-shaped plate, the hinge center of the inserted rod and the casing coincides with the arc center of the arc-shaped plate, a plurality of positioning holes are formed in the arc-shaped plate and evenly distributed along the circumferential direction of the arc-shaped plate, a threaded hole is formed in the rod wall of the inserted rod, the positioning holes can correspond to the threaded holes in position, and the positioning bolt penetrates through the positioning holes and then is screwed into the threaded holes. The design enables the service angle of the service wheel to be adjusted, the adjustment structure is simple, and the adjusted position can be memorized, namely, the service angle can be accurately adjusted to be the same as the previous service angle every time adjustment is carried out.

Preferably, linear driving mechanism includes motor one, lead screw, slider and mounting bracket, the spout has been seted up in the frame, the groove length direction and two of spout the plane parallel that the axial lead of service wheel was injectd jointly, motor one inlays admittedly in the spout, the one end of lead screw with the output shaft coaxial fixed of motor one, the other end of lead screw with the frame is rotated and is connected, the slider is established soon on the lead screw and its slip inlay establish extremely in the spout, be fixed with on the slider the mounting bracket, it has one to rotate the support on the mounting bracket the shaft of service wheel. The linear driving mechanism is simple in structure, and the distance between the two ball serving wheels can be adjusted conveniently.

Preferably, actuating mechanism includes motor two, synchronous pulley one, connecting axle, synchronous pulley two, hold-in range, gear one and gear two, motor two with the frame is fixed, it is inherent to coaxial cover on the output shaft of motor two synchronous pulley one, it has to rotate in the frame to support the connecting axle with the mounting bracket rotates to be connected the epaxial inherent one of coaxial cover separately of service wheel two, synchronous pulley one and two synchronous pulley two is overlapped jointly and is equipped with one the hold-in range, with the frame rotates to be connected the epaxial coaxial cover of service wheel is inherent gear one, coaxial cover is inherent on the connecting axle gear two, gear one with the meshing of gear two. The above design ensures that the two serving wheels can turn at the same speed and in opposite directions.

Preferably, the service subassembly still includes the tensioning piece, the tensioning piece includes gag lever post, wheel carrier, take-up pulley and spring, trompil and wear to be equipped with in the frame the gag lever post, gag lever post one end is fixed with the wheel carrier, it has to rotate to support on the wheel carrier the take-up pulley, the wheel core line of take-up pulley with synchronous pulley one takes turns the line parallel, the cover is equipped with on the gag lever post the spring, the both ends of spring respectively with the wheel carrier with the frame butt, the lateral wall of take-up pulley can support tightly the hold-in range. No matter how far the distance between the two service wheels is, the synchronous belt is always in a tight state, so that the transmission effect of the service wheels and the second motor is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an overall isometric view of a ball serving machine;

FIG. 2 is a partial isometric view of a pitching machine;

FIG. 3 is a second partial isometric view of a ball serving machine;

FIG. 4 is a partial isometric view of a pitching machine;

FIG. 5 is a partial isometric view of a pitching machine;

FIG. 6 is a partial isometric view of a pitching machine;

FIG. 7 is a fragmentary isometric view six of a ball server.

In the figure:

the device comprises a base plate 1, a direction wheel 2, a sleeve 3, an inserted rod 4, a jacking screw 5, a rack 6, a sliding groove 60, a first motor 7, a first screw rod 8, a sliding block 9, an installation frame 10, a second motor 11, a first synchronous pulley 12, a connecting shaft 13, a second synchronous pulley 14, a synchronous belt 15, a first gear 16, a second gear 17, a wheel shaft 18, an inner ring 19, an outer tire 20, a limiting rod 21, a wheel carrier 22, a tensioning wheel 23, a spring 24, a casing 25, a strip-shaped through hole 250, a shield 26, a positioning bolt 27, an arc-shaped plate 28, a positioning hole 280 and a rechargeable battery 29.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a pitching machine, wherein a pitching assembly is arranged above a base, the pitching assembly comprises two pitching wheels with opposite rotation directions, the shortest distance between the two pitching wheels is slightly smaller than the minimum outer diameter of a ball body, the ball body enters from one side between the two pitching wheels which rotate rapidly, and the ball body can be thrown out rapidly from the other side between the two pitching wheels due to the friction force between the ball body and the pitching wheels, so that the pitching effect is realized; by arranging the linear driving mechanism, the linear driving mechanism can adjust the distance between the two service wheels, so that the service robot can be suitable for balls with different diameters; the tensioning member can ensure that the synchronous belt 15 is always in a tensioned state no matter how the distance between the two service wheels is adjusted; the first synchronous belt wheel 12, the second synchronous belt wheel 14, the first gear 16 and the second gear 17 are arranged, so that the second motor 11 can simultaneously drive the two service wheels to rotate, and the two service wheels are ensured to have the same rotating speed and opposite rotating directions; the arrangement enables the height of the ball serving wheel to be adjusted by arranging the sleeve 3, the inserted rod 4 and the jacking screw 5; by arranging the arc-shaped plate 28 and the positioning bolt 27, the arrangement enables the ball serving angle of the ball serving wheel to be adjusted; by arranging the universal wheels 2, the pitching machine can be flexibly moved; the pitching machine is simple in structure, driven by the lithium battery, long in endurance time, convenient to move and suitable for various use places.

Examples

Referring to the attached drawings 1-7, the utility model discloses a whole and partial structure schematic diagram of an embodiment, the utility model discloses a pitching machine, include: a base, a casing 25 and a service assembly,

the base includes bottom plate 1, universal wheel 2, sleeve pipe 3, inserted bar 4 and top tight screw 5, bottom plate 1 is a rectangular plate and its lower facial features installs four universal wheel 2 that have brake function, four universal wheel 2 equipartitions are in the position department at four angles of bottom plate 1, it can be convenient for remove and rotate the base to set up universal wheel 2, the last face of bottom plate 1 is placed in the middle and the vertical fixation has a sleeve pipe 3, inserted bar 4 one end is articulated with the lower bottom wall of casing 25 and the articulated center of the two is parallel with the hole length direction of strip through-hole 250, the other end of inserted bar 4 slides and inserts and establishes to the sleeve pipe 3 in, the lateral wall trompil of sleeve pipe 3 is equipped with top tight screw 5 soon, top tight screw 5 can push up the outer wall of inserted bar 4, sleeve pipe 3 and the design purpose of inserted bar 4 can adjust the height of casing 25, and the same time, profile in the cross-section of sleeve pipe 3 and the cross-section of inserted bar 4 are circular, when four universal wheel 2 are in brake state and top tight screw 5 do not push up tight inserted bar 4, inserted bar 4 can be in sleeve pipe 3, thereby realize the rotation about casing 25, namely the rotation of casing 25, only send out the ball, only can be through the rotation with the angle of the casing 2 about the rotation of the casing 2 of course also realize.

The casing 25 is a rectangular shell in the inner part, an arc-shaped plate 28 is vertically fixed on the outer bottom wall of the casing 25, the hinge center of the inserted link 4 and the casing 25 is perpendicular to the plate surface of the arc-shaped plate 28, the hinge center of the inserted link 4 and the casing 25 coincides with the arc center of the arc-shaped plate 28, a plurality of circular positioning holes 280 are formed in the arc-shaped plate 28, the plurality of positioning holes 280 are uniformly arranged along the circumferential direction of the arc-shaped plate 28, a threaded hole is formed in the rod wall of the inserted link 4, the positioning hole 280 can correspond to the threaded hole in position, a positioning bolt 27 penetrates through the positioning hole 280 and then is screwed into the threaded hole, the hinge of the inserted link 4 and the casing 25 and the design of the arc-shaped plate 28 aim to adjust the deflection angle of the casing 25, namely, the service angle of the ball serving machine.

The ball serving assembly comprises a rack 6, a linear driving mechanism, a driving mechanism and ball serving wheels, wherein the rack 6, the linear driving mechanism and the driving mechanism are limited in a machine shell 25, the rack 6 is fixed with the inner bottom wall of the machine shell 25, the linear driving mechanism and the driving mechanism are installed on the rack 6, the two ball serving wheels are provided, the axial leads of the two ball serving wheels are parallel, the end parts of the two ball serving wheels are aligned, one ball serving wheel is rotatably supported on the rack 6, the other ball serving wheel is installed at the output end of the linear driving mechanism, and the two ball serving wheels are uniformly arranged above the rack 6; the service wheel comprises an inner ring 19, an outer tire 20 and a wheel shaft 18, wherein the inner ring 19 and the wheel shaft 18 are coaxially fixed, the outer tire 20 is sleeved on the inner ring 19, and the outer tire 20 is made of rubber and is internally inflated; the shortest distance between the two outer casings 20 is slightly smaller than the minimum outer diameter of the ball to be launched, and the ball is launched by the friction force between the ball to be launched and the two outer casings 20, and the shortest distance is slightly larger than the outer diameter of the ball to be launched, so that the pressure between the ball to be launched and the outer casings 20 is increased, the friction force between the ball to be launched and the outer casings 20 is increased, and the ball launching effect is ensured.

The moving direction of the output end of the linear driving mechanism is parallel to a plane defined by the axes of the two ball serving wheels and is vertical to the axes of the ball serving wheels; the driving mechanism is respectively in transmission connection with the two service wheels, and the rotation directions of the two service wheels are opposite; the upper end face of the casing 25 is provided with a strip-shaped through hole 250, the hole length direction of the strip-shaped through hole 250 is parallel to the moving direction of the output end of the linear driving mechanism, the wheel shafts 18 of the two service wheels penetrate through the strip-shaped through hole 250, and the two service wheels are both limited outside the casing 25.

Casing 25's outer top wall symmetry is fixed with two guard shields 26, and strip through-hole 250 and two service wheels are all spacing between two guard shields 26, inject a business turn over ball passageway between two guard shields 26, and the one end of business turn over ball passageway is the goal, and the other end is the goal, and guard shield 26 can enclose the fender to two service wheels, ensures on the one hand that the spheroid can only enter into to between two service wheels from the goal, and on the other hand can carry out safety protection to user and service machine outlying region.

The linear driving mechanism comprises a motor I7, a screw rod 8, a sliding block 9 and a mounting frame 10, wherein a sliding groove 60 with a rectangular cross section is formed in the frame 6, the groove length direction of the sliding groove 60 is parallel to a plane defined by axial leads of the two service wheels together, the motor I7 is fixedly embedded in the sliding groove 60, the motor I7 is tightly attached to the inner wall of one end of the sliding groove 60, one end of the screw rod 8 is coaxially fixed with an output shaft of the motor I7, the other end of the screw rod 8 is rotatably connected with the frame 6, the sliding block 9 is rotatably arranged on the screw rod 8 and is embedded into the sliding groove 60 in a sliding manner, the sliding block 9 is a rectangular block, the sliding block 9 can only slide in the sliding groove 60, the mounting frame 10 is fixed on the sliding block 9, a wheel shaft 18 of one service wheel is rotatably supported on the mounting frame 10, and the motor I7 drives the sliding block 9 to move, so that the distance between the two service wheels can be adjusted correspondingly according to spheres with different outer diameters.

The driving mechanism comprises a second motor 11, a first synchronous belt wheel 12, a connecting shaft 13, a second synchronous belt wheel 14, a synchronous belt 15, a first gear 16 and a second gear 17, the second motor 11 is fixed with the rack 6, the first synchronous belt wheel 12 is coaxially sleeved on an output shaft of the second motor 11, the connecting shaft 13 is rotatably supported on the rack 6, the second synchronous belt wheel 14 is coaxially sleeved on the connecting shaft 13 and a wheel shaft 18 of the ball serving wheel rotatably connected with the mounting rack 10, the first synchronous belt wheel 12 and the two second synchronous belt wheels 14 are sleeved with the synchronous belt 15 together, the first gear 16 is coaxially sleeved on the wheel shaft 18 of the ball serving wheel rotatably connected with the rack 6, the second gear 17 is coaxially sleeved on the connecting shaft 13, the first gear 16 and the second gear 17 have the same tooth number and are meshed, and the first gear 16 and the second gear 17 are arranged to enable the rotating directions of the two ball serving wheels to be opposite.

Further specifically, the service subassembly still includes the tensioning piece, the tensioning piece includes gag lever post 21, wheel carrier 22, take-up pulley 23 and spring 24, frame 6 is gone up the trompil and is worn to be equipped with the gag lever post 21 that the cross-section is circular shape, gag lever post 21 arranges between two synchronous pulley two 14, gag lever post 21 one end is fixed with wheel carrier 22, it has take-up pulley 23 to rotate the support on the wheel carrier 22, the pole central line of gag lever post 21 is perpendicular with the wheel center line of synchronous pulley one 12, the wheel center line of take-up pulley 23 is parallel with the wheel center line of synchronous pulley one 12, the cover is equipped with spring 24 on the gag lever post 21, spring 24's both ends respectively with wheel carrier 22 and frame 6 butt, the lateral wall of take-up pulley 23 can support tight hold-in range 15.

More specifically, the vehicle-mounted hybrid power system further comprises a rechargeable battery 29 and a switch component (not shown in the figure) for controlling the on/off and speed regulation of the first motor 7 and the second motor 11, wherein the rechargeable battery 29 in the present application is a lithium battery, and the lithium battery has the advantages of high energy density, small volume and long endurance time. The rechargeable battery 29 is electrically connected with the first motor 7 and the second motor 11, the switch component is electrically connected in series with a circuit connected between the rechargeable battery 29 and the first motor 7 and the second motor 11, the rechargeable battery 29 is fixed on an inner bottom wall of the casing 25, the switch component is fixed on an outer wall of the casing 25, the specific position of the switch component on the casing 25 needs to be determined according to the actual operation of an operator, and the rechargeable battery 29 and the switch component are relatively mature prior art, so a detailed explanation thereof is not provided in this embodiment.

When the pitching machine is used, the shell 25 is pushed, the base is moved to a flat zone, the left position and the right position of the shell 25 and the pitching angle are adjusted, then the distance between the two pitching wheels is adjusted according to the outer diameter of the ball body, and after the adjustment is finished, the second motor 11 is started to start pitching training.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A ball serving machine, comprising:

a base;

the ball serving assembly comprises a rack (6), a linear driving mechanism, a driving mechanism and ball serving wheels, wherein the rack (6) is installed above the base, the linear driving mechanism and the driving mechanism are installed on the rack (6), the two ball serving wheels are provided, the axial leads of the two ball serving wheels are parallel, the end parts of the two ball serving wheels are aligned, one ball serving wheel is rotatably supported on the rack (6), the other ball serving wheel is installed on the output end of the linear driving mechanism, and the two ball serving wheels are both arranged above the rack (6); the moving direction of the output end of the linear driving mechanism is parallel to a plane defined by the axes of the two service wheels and is vertical to the axes of the service wheels; the driving mechanism is in transmission connection with the two service wheels respectively, and the rotation directions of the two service wheels are opposite.

2. The pitching machine according to claim 1, further comprising a casing (25), wherein the frame (6), the linear driving mechanism and the driving mechanism are all limited in the casing (25), the lower end of the casing (25) is connected with the base, a strip-shaped through hole (250) is formed in the upper end face of the casing (25), the hole length direction of the strip-shaped through hole (250) is parallel to the moving direction of the output end of the linear driving mechanism, wheel shafts (18) of the two pitching wheels penetrate through the strip-shaped through hole (250), and the two pitching wheels are both limited outside the casing (25).

3. The pitching machine according to claim 2, wherein two protective covers (26) are symmetrically fixed on the outer top wall of the housing (25), the strip-shaped through hole (250) and the pitching wheels are both limited between the two protective covers (26), a ball inlet and outlet passage is defined between the two protective covers (26), one end of the ball inlet and outlet passage is a ball inlet, and the other end of the ball inlet and outlet passage is a ball outlet.

4. The pitching machine according to claim 2, wherein the base comprises a bottom plate (1), universal wheels (2), a sleeve (3), an insertion rod (4) and a jacking screw (5), a plurality of universal wheels (2) with a braking function are uniformly distributed on the lower plate surface of the bottom plate (1), the sleeve (3) is vertically fixed on the upper plate surface of the bottom plate (1), one end of the insertion rod (4) is hinged to the lower bottom wall of the casing (25), the hinged center of the insertion rod and the lower bottom wall of the casing is parallel to the hole length direction of the strip-shaped through hole (250), the other end of the insertion rod (4) is inserted into the sleeve (3), the jacking screw (5) is arranged in the hole of the side wall of the sleeve (3) in a rotating mode, and the jacking screw (5) can jack the insertion rod (4).

5. The pitching machine according to claim 4, further comprising a positioning bolt (27) and an arc plate (28), wherein one arc plate (28) is vertically fixed on the outer bottom wall of the casing (25), the hinge center of the insertion rod (4) and the casing (25) is perpendicular to the plate surface of the arc plate (28), the hinge center of the insertion rod (4) and the casing (25) coincides with the arc center of the arc plate (28), the arc plate (28) is provided with a plurality of positioning holes (280), the plurality of positioning holes (280) are uniformly arranged along the circumferential direction of the arc plate (28), the rod wall of the insertion rod (4) is provided with a threaded hole, the positioning hole (280) can correspond to the threaded hole, and the positioning bolt (27) passes through the positioning hole (280) and then is screwed into the threaded hole.

6. The pitching machine according to claim 1, wherein the linear driving mechanism comprises a first motor (7), a screw rod (8), a sliding block (9) and a mounting frame (10), a sliding groove (60) is formed in the frame (6), the groove length direction of the sliding groove (60) is parallel to a plane defined by the axial leads of the two pitching wheels together, the first motor (7) is fixedly embedded in the sliding groove (60), one end of the screw rod (8) is coaxially fixed with the output shaft of the first motor (7), the other end of the screw rod (8) is rotatably connected with the frame (6), the sliding block (9) is rotatably arranged on the screw rod (8) and is slidably embedded in the sliding groove (60), the mounting frame (10) is fixed on the sliding block (9), and a wheel shaft (18) of one pitching wheel is rotatably supported on the mounting frame (10).

7. The pitching machine according to claim 6, wherein the driving mechanism comprises a second motor (11), a first synchronous pulley (12), a connecting shaft (13), a second synchronous pulley (14), a synchronous belt (15), a first gear (16) and a second gear (17), the second motor (11) is fixed with the frame (6), the first synchronous pulley (12) is coaxially sleeved on an output shaft of the second motor (11), the connecting shaft (13) is rotatably supported on the frame (6), the second synchronous pulley (14) is coaxially sleeved on each of the connecting shaft (13) and a wheel shaft (18) of the pitching wheel rotatably connected with the mounting frame (10), the first synchronous pulley (15) is sleeved on the first synchronous pulley (12) and the two second synchronous pulleys (14) together, the first gear (16) is coaxially sleeved on the wheel shaft (18) of the pitching wheel rotatably connected with the frame (6), the second gear (17) is sleeved on the connecting shaft (13), and the first gear (16) and the second gear (17) are coaxially meshed.

8. The pitching machine according to claim 7, wherein the pitching assembly further comprises a tensioning member, the tensioning member comprises a limiting rod (21), a wheel carrier (22), a tensioning wheel (23) and a spring (24), the frame (6) is provided with a hole and the limiting rod (21) is inserted, the wheel carrier (22) is fixed at one end of the limiting rod (21), the tensioning wheel (23) is rotatably supported on the wheel carrier (22), a wheel center line of the tensioning wheel (23) is parallel to a wheel center line of the synchronous pulley (12), the spring (24) is sleeved on the limiting rod (21), two ends of the spring (24) are respectively abutted against the wheel carrier (22) and the frame (6), and a side wall of the tensioning wheel (23) can abut against the synchronous belt (15).

Images