KR20120105726A - A height adjustable pitching machine - Google Patents

Abstract

PURPOSE: An elevating system pitching machine is provided to facilitate carriage and storage and to facilitate height control by needs. CONSTITUTION: An elevating system pitching machine comprises a base frame(101), a lift frame(102), a pair of first lift bars(161), a pair of second lift bars(162), a pneumatic or hydraulic cylinder(171), a pneumatic and hydraulic lifting device, a first rotator(110) and a second rotator(120). A guide rail is horizontally formed inside the base frame. The lift frame is located at the top of the base frame. One end of the first lift bar is pivotally combined with the front end of the base frame. The other end is fixed and combined to the lift frame. One end of the pair of second lift bars is fixed and combined to the lift frame. At the other end, a guide wheel is pivotally installed. The pneumatic or hydraulic cylinder lifts and drops the first lift bar. The pneumatic lifting device includes a lift pedal.

Description

Lifting Pitching Machine {A height adjustable pitching machine}

The present invention relates to a pitching machine for throwing a baseball, not only convenient to transport and storage, but also easy to adjust the height according to the height and needs of the batter, etc., easy to adjust the angle and distance of the throwing ball It relates to a pitching machine.

As a baseball practice pitching machine (ball thrower), a conventional tire method and a pitching arm method coexisted. The tire method is a method of throwing a ball between two tires rotating at high speed and throwing the ball by the frictional force of the tire surface. , Pitching arm is a method of loading and throwing a ball to the rotating pitching arm receives the rotational force of the motor.

Such a pitching machine may be installed and used in a simple baseball field of amusement facilities such as an amusement park, or may be used as a batting practice equipment for a baseball player, a baseball club, and a professional player of a school.

As such a pitching machine, registered patent No. 0152649 "Pitching robot for batting practice of baseball", Patent Publication No. 2002-0084625 "Baseball batting apparatus", Patent No. 0919371 "Arm pitching machine", Utility Model Publication Thread 1983-0002586 has already been filed and known, such as "ball thrower of a tennis ball".

However, the conventional baseball practice pitching machine was uncomfortable because there is no means for adjusting the pitch of the pitching machine regardless of the method. Of course, some pitching machines are configured to adjust the inclination of the bottom plate, but this is only to stably adjust the inclination of the pitching machine rather than to adjust the height of the pitching machine itself. Even in adjusting the release of the bolts fastened to the frame is only a degree to reposition the bolt coupling.

The pitching machine needs to vary the height of the throwing point of the ball according to the height and other needs of the user. The conventional pitching machine is not only suitable for common use by children and adults because the height of the pitching machine is fixed. There was a problem that the size and weight of the machine was so large that it was not easy to transport between the room and the playground from time to time.

In addition, even in the case of a pitching machine equipped with wheels in order to smoothly move the pitching machine, its height is still high and unstable, and it is frequently overturned and damaged during transportation or movement.

Therefore, during transport or transportation, the volume is small and the convenience of movement is high. During use, the height can be adjusted quickly and precisely on the fly according to the height and other needs of the user, and the direction or flying distance of the throwing ball can be freely adjusted. The development of a pitching machine that can be called for.

Patent No. 0152649 "Baseball batting practice pitching robot" Patent Publication No. 2002-0084625 "Baseball Batting Device" Registered Patent No. 0919371 "Arm Pitching Machine" Utility Model Publication No. 1983-0002586 "Tennis Ball Thrower"

An object of the present invention is to provide a pitching machine developed so that the user can adjust the height of the throwing origin quickly and precisely with a simple operation as needed, so that the user can easily adapt to the environment, such as the height of the user or the place where the pitching machine is installed. will be.

In addition, the present invention is to provide a pitching machine designed so that the volume control is free, not only convenient to transport, transport and storage, but also has a sense of stability when moving in the playground or indoors so as not to fall well.

In addition, the present invention is to provide a pitching machine that can be easily adjusted not only the pitching angle and the flying distance of the throwing ball, but also the tension of the belt stretched by long use.

In order to achieve the above object, in the present invention, the base frame 101 is rotatably mounted below the wheel 106, the guide rail 101a is formed in the front and rear direction; An elevating frame (102) positioned above the base frame (101); A pair of left and right first lifting bars 161, one end of which is rotatably coupled to the front end of the base frame 101 and the other end of which is fixedly coupled to the lifting frame 102; As the first elevating bar 161 and the link pin 163 is pivotally coupled to one end is fixedly coupled to the lifting frame 102, the other end of the guide to move on the guide rail (101a) A pair of left and right second lifting bars 162 on which the wheels 162a are rotatably mounted; A tip of the piston rod 171a is connected to the first elevating bar 161 to provide a hydraulic pneumatic cylinder 171 for raising and lowering the first elevating bar 161 and to provide hydraulic pneumatic pressure to the hydraulic pneumatic cylinder 171. Hydraulic pneumatic lifting device consisting of a lifting pedal 177 for; And receiving the rotational force from the driving motor 107 mounted on the main frame 103 located on the lifting frame 102 to face each other and to rotate the first rotating body 110 and the second rotating body 120. Disclosed is a lifting type pitching machine comprising a.

Here, the front end of the piston rod 171a of the hydraulic pneumatic cylinder 171 is rotatably coupled to the fixing piece 165 of the crosspiece 164 connecting the first lifting bar 161 on the left and right, and the hydraulic pneumatic It is preferable that the push cylinder 172 for controlling the oil pressure of the oil pressure cylinder 171 is connected to the rear of the cylinder 171 by the push piston 172a advancing by the operation of the lifting pedal 177.

In this case, a hydraulic pressure chamber 173 may be coupled between the hydraulic pressure cylinder 171 and the push cylinder 172 to form a fluid passage therein.

Above, the push rod 175 hinged to the connecting rod 176 extending from the lift pedal 177 is coupled to the rear end of the push piston 172a, between the push rod 175 and the pneumatic chamber 173. It is preferable that the elastic spring 181 be placed therein.

On the other hand, the first rotating body 110 and the second rotating body 120 is rotatably mounted on the rotating frame 104, the upper end is rotatably coupled to the main frame 103, the main frame It is preferable that the front and rear inclination angles of the rotation frame 104 are adjusted by the rotation of the screw shaft 152 connecting the 103 and the rotation frame 104.

At this time, the auxiliary pulley 131 is mounted at one end of the bent shape on the side of the rotation frame 104, and the adjustment bolt 133 is coupled to the other end so as to be rotatable on the side of the rotation frame 104. Combination tension control first piece 130 and one end is rotatably coupled to the side of the rotation frame 104 and the other end is formed through the adjustment hole 142 for coupling with the adjustment bolt 133 Preferably, the tension adjusting second piece 140 is provided.

According to the present invention, when using the pitching machine, the user can operate the lift pedal to quickly and precisely adjust the pitch of the pitching machine to meet the needs of the user or other environment, and when the pitching machine is not in use, By reducing the volume by reducing the size, there is an advantage that it is convenient to transport or store the pitching machine.

In addition, the pitching machine of the present invention is very convenient because it is possible to freely adjust the angle and the flying distance of the throwing ball by changing the inclination angle of the rotation frame by a simple operation of the inclination angle adjustment handle.

In addition, in the case of the pitching machine of the present invention, when the tension of the belt connecting the driving motor and each rotating body is not appropriate, the tension of the belt can be adjusted at any time by simple operation of the adjusting bolt, so that the maintenance to prevent the malfunction of the device is possible. It has a very convenient advantage.

1 is a side view of the lifting pitching machine of the present invention.
Figure 2 is a front view of the lifting pitching machine of the present invention.
Figure 3 is a side view of the lift frame in a raised state in accordance with the present invention.
4 is a combined configuration of the hydraulic lifting device of the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration and operation principle of the present invention will be described in detail.

Figure 1 is a side view of the lifting pitching machine of the present invention, Figure 2 is a front view of the lifting pitching machine of the present invention. In the following description, the left side is described as the front, the right side the rear, and the ground direction as the left and right sides with reference to FIG. 1.

The lifting type pitching machine of the present invention (hereinafter, abbreviated as pitching machine) is largely provided with a base frame 101 on which a wheel 106 is rotatably mounted at a lower portion thereof, and a lifting frame lifting up and down on the base frame 101 ( 102, a main frame 103 fixed on the lifting frame 102, a rotation frame 104 rotatably connected to an upper end of the main frame 103, and rotatably on the rotation frame 104. It consists of a first and a second rotating body (110, 120) mounted up and down and a drive motor (107) fixed to the rotating frame (104).

The base frame 101 is located at the bottom of the pitching machine 100, and four wheels 106 are rotatably mounted on the front, rear, left, and right sides, and the guide rails 101a are formed to extend back and forth on the inside as described below. do. At the rear of the base frame 101, a '105' shaped handle 105 is fixedly attached to the rear of the base frame 101, and the handle 105 has a return handle 183 connected to a wire cable 182 which will be described later. Attached.

The lifting frame 102 is lifted up and down on the base frame 101 by a pneumatic lifting device mounted below the open center of the base frame 101. Details thereof will be described later.

The main frame 103 is a steel frame in which the front, rear, left, and right sides are opened, and serves as a basic skeleton of the pitching machine 100. On the main frame 103, the plate-like rotating frame 104, which is vertically long, is coupled, and the upper end of the rotating frame 104 is rotated at a predetermined angle back and forth by the rotating shaft 104a on the upper end of the main frame 103. And the bottom is not constrained to move freely.

The first rotating body 110 and the second rotating body 120 which are rotated in opposite directions to face each other are mounted on an upper portion of the rotation frame 104 to be spaced apart from each other vertically. The first and second rotating bodies 110 and 120 are axially coupled to the first rotating shaft 111 and the second rotating shaft 121 which are rotatably supported by bearings 112 and 122 fixed to the front surface of the rotation frame 104, respectively. The first pulley 113 and the second pulley 123 are respectively coupled to the other ends of the first and second rotary shafts 111 and 121 to which the first and second rotary bodies 110 and 120 are coupled. Concave portions 110a and 120a are formed on the circumferential surfaces of the first and second rotatable bodies 110 and 120 to stably throw the balls while being smoothly guided.

The drive motor 107 is fixedly attached to the lower portion of the rotation frame 104, the motor pulley 107a is coupled to the motor shaft of the drive motor 107.

The first and second rotating bodies 110 and 120 are powered by the motor pulley 107a of the driving motor 107 and the belt 150.

The rotation frame 104 is rotated back and forth by a predetermined angle by a screw shaft 152 that is rotatably screwed to the main frame 103. That is, as shown in the main frame 103, the screw shaft 152 to which the inclination angle adjustment handle 151 is mounted at the rear end is coupled by the fixing bracket 153a, and the front end of the screw shaft 152 It is rotatably supported by the rotation support bracket 153b on the rotation frame 104. Accordingly, when the inclination angle adjustment handle 151 is turned, the rotation frame 104 is rotated back and forth by a predetermined angle by the screw shaft 152 that moves in a helical motion.

As such, when the front and rear inclination angles of the rotation frame 104 are changed, the throwing direction and flying distance of the ball thrown between the first and second rotating bodies 110 and 120 and thrown by the frictional force with the rotating surface are changed.

As shown in the side of the rotation frame 104, a means for adjusting the tension of the belt 150 is provided separately, which is the tension adjusting first piece 130 and the tension adjusting second piece 140.

The tension adjusting first piece 130 is a metal bar forming a bent 'V' shape, the center of the bent shape is coupled to the side of the rotation frame 104 by the rotation shaft 132, the front end of the auxiliary pulley ( 131 is rotatably coupled, the rear end is adjusted bolt 133 is coupled.

The tension adjusting second piece 140 is an arc-shaped rod, and the lower end is coupled to the rotation frame 104 by the rotation shaft 141, and the other end is formed by the arc-shaped adjustment hole 142 penetrating the plate surface. .

The motor pulley 107a of the drive motor 107 and the first pulley 113, the second pulley 123, and the auxiliary pulley 131 are connected by a belt 150 to power the drive motor 107. In order to receive the transmission, it is necessary to adjust the tension of the belt 150 when it is used for a long time or the belt is loosened according to the use environment.

In this case, in the present invention, the tension of the belt 150 may be adjusted by adjusting the position of the adjusting bolt 133 in the adjusting hole 142.

Meanwhile, the diameter of the first pulley 113 connected to the first rotation shaft 111 may be larger than the diameter of the second pulley 123 connected to the second rotation shaft 121. This is to change the rotation speed of the entire 110 and the second rotating body 120. That is, in the present embodiment, the diameter of the second pulley 123 is smaller than the diameter of the first pulley 113 so that the rotation speed of the second rotating body 120 is faster than that of the first rotating body 110. In this way, a strong rotational force is applied to the bottom portion of the ball being thrown and thrown between the rotating surfaces of both the rotors 110 and 120, so that the ball can fly more stably.

In the drawing, reference numeral 177 denotes a lift pedal, 185 denotes a ball inlet, and 190 denotes a control box.

Figure 3 is a side view of the lifting frame is raised in accordance with the present invention, Figure 4 is a combined configuration of the hydraulic lifting device of the present invention.

On the inner surface of the base frame 101, upper and lower guide rails 101a protruding inwardly (in the ground direction) are formed, and guide wheels 162a to be described later are mounted between the upper and lower guide rails 101a.

The elevating frame 102 and the base frame 101 are connected by a first elevating bar 161 and a second elevating bar 162 which are cross-coupled in an 'X' shape.

The lower end of the first lifting bar 161 is rotatably coupled to the front end of the base frame 101 by the rotation shaft 166, and the upper end is fixedly coupled to the bottom of the lifting frame 102.

An upper end of the second elevating bar 162 is fixedly coupled to a bottom of the elevating frame 102, and a lower end on which the guide wheel 162a is rotatably attached is constrained to the guide rail 101a to guide the rail 101a. Sliding back and forth on the).

Link pins 163 are coupled to each other at the point where the first elevating bar 161 and the second elevating bar 162 intersect so that they can be unfolded or folded.

The first lifting bar 161 and the second lifting bar 162 are provided in pairs each side to the left and right of the base frame 101.

The first elevating bar 161 and the second elevating bar 162 are folded or unfolded up and down by a separate hydraulic pneumatic lifting device, the hydraulic pneumatic lifting device is largely pneumatic cylinder 171, push cylinder 172, hydraulic pneumatic The chamber 173, the push rod 175, the connecting rod 176 and the lifting pedal 177.

The pneumatic lifting device is installed in the open central portion of the base frame 101 and fixedly supported by the base frame 101.

The hydraulic pneumatic cylinder 171 is a piston rod 171a is a linear movement by the hydraulic or pneumatic, the front end of the piston rod 171a is connected to the first lifting bar 161, the first lifting bar 161 Will rotate back and forth. Specifically, a fixing piece for forming a cross bar 164 connecting the left and right pair of the first lifting bar 161 to be coupled to the base frame 101 so that the lower end is rotated and fixed to the cross bar 164 ( 165 is rotatably coupled to the front end of the piston rod (171a) by the rotation pin (165a). In this case, as the piston rod 171a moves forward, the lifting frame 102 is raised and moved backward. At this time, the lower end of the second elevating bar 162 is to be moved back and forth on the guide rail (101a).

The rear end of the pneumatic cylinder 171 is coupled to the hydraulic pneumatic chamber (173) is formed in the passage passage of the fluid therein, the push cylinder 172 is coupled to the rear end of the hydraulic pneumatic chamber (173).

The push cylinder 172 serves to linearly move the piston rod 171a by supplying fluid pressure to the hydraulic pneumatic cylinder 171 by advancing and pushing the push piston 172a. In the present embodiment, the push rod 175 is connected to the rear end of the push piston 172a, and the push rod 175 is connected to the fixing bracket 180 fixed to the base frame 101 by a hinge shaft 180a. The hinge piece 178 is coupled to the hinge piece 178 by a hinge pin 178a.

The hinge piece 178 is coupled to the connecting rod 176, which is a long curved rod extending from the lifting pedal 177.

Therefore, when the user intends to adjust the height of the pitching machine by raising the lifting frame 102, the pump may be pumped by linearly moving the push piston 172a back and forth by stepping on and lifting the lift pedal 177.

When the lifting frame 102 reaches the desired height by repeatedly pressing the lifting pedal 177, the operation of the lifting pedal 177 may be stopped and the pitching machine 100 may be driven.

Here, the compression spring 181 is placed between the hydraulic pressure chamber 173 and the push rod 175 so that the push piston 172a is elastically supported.

When the lifting frame 102 is to be lowered to its original position, the return handle 183 attached to the handle 105 may be pulled out.

As shown in FIG. 4, the pneumatic pneumatic chamber 173 is provided with a return valve 174. The return valve 174 is configured to return the working fluid supplied to the pneumatic pneumatic cylinder 171 to the pneumatic pneumatic chamber 173. It can be operated in the same manner as applied to a hydraulic jack or hydraulic jockey for a vehicle.

One end of a wire cable 182 is connected to the return valve 174, and the other end of the wire cable 182 is connected to the return handle 183 described above. Accordingly, when the return handle 183 is pulled, the return valve 174 is operated by the wire cable 182 to return the working fluid so that the lifting frame 102 is lowered to its original position.

The present invention quickly and accurately adjusts the height of the device by using a lifting pedal and a hydraulic lifting device, reducing the volume of the device to facilitate the movement, transport and storage, as well as easy to adjust the pitching angle and flying distance of the thrown ball It relates to a lifting pitching machine.

The present invention will be particularly effective when used in batting practice of elementary and junior high school baseball players, various baseball clubs and professional baseball players.

100: pitching machine 101: base frame
101a: guide rail 102: elevating frame
103: main frame 104: rotation frame
105: handle 106: wheels
107: drive motor 107a: motor pulley
110: first rotating body 111: first rotating shaft
112: bearing 113: first pulley
120: second rotating body 121: second rotating shaft
122: bearing 123: second pulley
130: tension control part 1 131: auxiliary pulley
132: rotating shaft 133: adjusting bolt
140: tension control part 2 141: rotating shaft
142: adjustment hole 150: belt
151: tilt angle adjustment handle 152: screw shaft
153: fixing bracket 161: first lifting bar
162: second lifting bar 162a: guide wheel
163: link pin 164: crossbar
165: fixing piece 165a: rotating pin
166: rotating shaft 171: pneumatic cylinder
171a: piston rod 172: push cylinder
172a: push piston 173: pneumatic chamber
174: return valve 175: push rod
176: connection rod 177: lift pedal
178: hinge piece 178a: hinge pin
180: fixing bracket 180a: hinge axis
181: spring 182: wire cable
183: return handle 185: ball inlet
190: control box

Claims (6)

A base frame 101 rotatably mounted below and a guide rail 101a formed in the front-rear direction on the inside thereof;
An elevating frame (102) positioned above the base frame (101);
A pair of left and right first lifting bars 161, one end of which is rotatably coupled to the front end of the base frame 101 and the other end of which is fixedly coupled to the lifting frame 102;
As the first elevating bar 161 and the link pin 163 is pivotally coupled to one end is fixedly coupled to the lifting frame 102, the other end of the guide to move on the guide rail (101a) A pair of left and right second lifting bars 162 on which the wheels 162a are rotatably mounted;
A tip of the piston rod 171a is connected to the first elevating bar 161 to provide a hydraulic pneumatic cylinder 171 for raising and lowering the first elevating bar 161 and to provide hydraulic pneumatic pressure to the hydraulic pneumatic cylinder 171. Hydraulic pneumatic lifting device consisting of a lifting pedal 177 for; And
A first rotating body 110 and a second rotating body 120 which rotate to face each other by receiving rotational force from a driving motor 107 mounted to the main frame 103 located on the lifting frame 102;
Lifting pitching machine, characterized in that comprises a. The method of claim 1,
The front end of the piston rod 171a of the hydraulic pneumatic cylinder 171 is rotatably coupled to the fixed piece 165 of the crosspiece 164 connecting the first lifting bar 161 on the left and right, and the hydraulic pneumatic cylinder ( A rearward pitching pitcher is connected to the rear of the 171 by a push piston 172a which moves forward and backward by the operation of the lift pedal 177 to adjust the hydraulic pressure of the hydraulic cylinder 171. machine. The method of claim 2,
Lifting pitching machine, characterized in that the hydraulic pneumatic chamber (173) is formed between the hydraulic cylinder (171) and the push cylinder 172 is formed a passage of the fluid therein. The method of claim 3,
The rear end of the push piston 172a is coupled to the push rod 175 hinged to the connecting rod 176 extending from the lifting pedal 177, the elastic between the push rod 175 and the pneumatic chamber 173 Lifting pitching machine, characterized in that the spring (181) is placed. The method according to any one of claims 1 to 4,
The first rotatable body 110 and the second rotatable body 120 are rotatably mounted on a rotation frame 104 having an upper end rotatably coupled to the main frame 103, and the main frame 103. Lifting pitching machine, characterized in that the front and rear inclination angle of the rotating frame 104 is adjusted by the rotation of the screw shaft (152) connecting between the rotating frame (104). The method of claim 5,
An auxiliary pulley 131 is mounted at one end of the bent shape on the side of the rotation frame 104, and an adjustment bolt 133 is coupled to the other end to be rotatably coupled to the side of the rotation frame 104. Tension control the first piece 130, and one end is rotatably coupled to the side of the rotation frame 104 and the other end of the tension is formed through the adjustment hole 142 for coupling with the adjustment bolt 133 Adjustable pitching machine, characterized in that the second piece 140 is provided.

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