A multi-angle rebound device for ball training

Abstract

The present invention relates to the field of ball training equipment, and in particular to a multi-angle rebound device for ball training. The device includes a base plate, a table tennis table, a fixed frame, and a mounting frame, etc.; the table tennis table and the fixed frame are fixedly connected to the base plate, and the mounting frame is rotatably connected to the fixed frame. The present invention bounces the table tennis ball back through a swing plate, so that players can continue to practice table tennis, replacing manual assisted throwing of the ball, saving time and manpower. When the player moves, he steps on the pressure plate, causing the swing plate to swing away from or towards the table tennis table. While the mounting frame swings, it squeezes the piston frame, and then the swing plate is swung up and down through the rack frame and the driving gear, thereby changing the angle at which the table tennis ball is bounced back by adjusting the angle of the swing plate, making the angle at which the table tennis ball is bounced back more diverse, thereby achieving better training results.

Description

Technical Field

[0001] The invention relates to the field of ball training equipment, in particular to a multi-angle rebound device for ball training. Background Art

[0002] Table tennis, known as China's "national ball," is a globally popular ball sport. Table tennis is accessible, fun, and challenging, making it a popular sport for all ages. It's also a popular competitive sport. To achieve high scores in table tennis competitions, players need to continuously train and hone their skills.

[0003] Currently, players generally prepare a large number of table tennis balls before training, and then use manual assistance to throw the balls while the players train. This training method is not only time-consuming and labor-intensive, but also requires a lot of time to pick up the balls after training, which is inconvenient for players to continue table tennis training, resulting in poor training results. Summary of the Invention

[0004] In view of the problems raised in the above background technology, the present invention provides a multi-angle rebound device for ball training, which can make a table tennis ball bounce back at multiple angles through a swing plate, and make the rebound angle more random, so that players can continue to perform table tennis training and achieve better training results.

[0005] The technical solution is as follows: A multi-angle rebound device for ball training includes a base plate, a table tennis table, a fixed frame, a mounting frame, a swing plate, a side plate, a left-right swing mechanism and an up-and-down swing mechanism. The base plate is fixedly connected to the table tennis table and the fixed frame, the fixed frame is rotatably connected to the mounting frame, the swing plate is rotatably connected inside the mounting frame, the side of the mounting frame is rotatably connected to two side plates, the two side plates are symmetrically arranged, the left-and-right swing mechanism is arranged between the mounting frame and the base plate, the left-and-right swing mechanism is used to swing the swing plate away from or towards the table tennis table, the up-and-down swing mechanism is arranged on the side of the mounting frame close to the fixed frame, and the up-and-down swing mechanism is used to swing the swing plate up and down.

[0006] More preferably, the left and right swinging mechanism includes an elastic rope, a connecting rod, a push rack, a return spring and a pressure plate. Two elastic ropes are connected to the side of the mounting rack close to the fixed rack. Two connecting rods are slidably connected to the fixed rack. The other end of each elastic rope is connected to the adjacent connecting rod. The other end of each connecting rod is fixedly connected to the push rack. The other end of each push rack is provided with an inclined surface. Each push rack is slidably connected to the base plate. A return spring is connected between each push rack and the base plate. Two pressure plates are rotatably connected to the side of the base plate away from the fixed rack. The two pressure plates are symmetrically arranged.

[0007] More preferably, the up and down swinging mechanism includes a driving gear, a transition air cylinder, a rack rack, a telescopic spring, an air pump, a piston rack and a hose. Two driving gears are fixedly connected to the swing plate, and two transition air cylinders are fixedly connected to the mounting frame. Rack racks are slidably connected to the two transition air cylinders on the mounting frame, and each rack rack is meshed with the adjacent driving gear. A telescopic spring is connected between each rack rack and the adjacent transition air cylinder. Two air pumps are fixedly connected to the fixed frame, and two piston racks are slidably connected to the mounting frame. The two piston racks are respectively slidably connected to the adjacent air pumps. A hose is connected between the air pump and the transition air cylinder on the same side of the mounting frame, and there are two hoses in total.

[0008] More preferably, the top of each transition air cylinder is connected to an air outlet pipe.

[0009] More preferably, a sliding mechanism is included, which is arranged between the mounting frame and the swing plate. The sliding mechanism includes a two-way screw, an overrunning clutch, a column gear, an arc-shaped rack, a connecting frame and a rotating plate. The swing plate is rotatably connected to the two-way screw, one end of the two-way screw is fixedly connected to the overrunning clutch, the outer side of the overrunning clutch is fixedly connected to the column gear, the side of the mounting frame close to the column gear is fixedly connected to the arc-shaped rack, the arc-shaped rack is meshed with the column gear, the two-way screw is connected to the connecting frame by a thread, and the end of the connecting frame away from the column gear is rotatably connected to the rotating plate, and the rotating plate is located on the side of the swing plate close to the table tennis table.

[0010] More preferably, it also includes a rotating mechanism, which is arranged on the sliding mechanism. The rotating mechanism includes a transmission gear, a rack frame, a torsion spring and a guide frame. The upper part of the rotating plate is fixedly connected to the transmission gear, the upper part of the mounting frame is slidably connected to the rack frame, a torsion spring is connected between the connecting frame and the rotating plate, the guide frame is fixedly connected to the bidirectional screw rod, and the rack frame is slidably connected to the guide frame.

[0011] More preferably, an elastic plate is further included, and the elastic plate is clamped on the side of the rotating plate close to the table tennis table.

[0012] More preferably, the elastic plate is made of rubber.

[0013] More preferably, a plurality of protrusions are provided on both sides of the elastic plate, and the protrusions on one side of the elastic plate are larger than the protrusions on the other side.

[0014] More preferably, it further includes a torsion spring 2 and a top plate, wherein a torsion spring 2 is connected between each side plate and the mounting frame, and two top plates are fixedly connected to the swing plate, and each top plate is in contact with the adjacent side plate.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention bounces the table tennis ball back through the swing plate, so that players can continue to practice table tennis, replacing manual assisted throwing of the ball, saving time and manpower. When the player moves, he steps on the pressure plate, causing the swing plate to swing away from or close to the table tennis table. The mounting frame squeezes the piston frame while swinging, and then the swing plate is swung up and down through the rack frame and the driving gear, so that the angle at which the table tennis ball is bounced back can be changed by adjusting the angle of the swing plate, so that the angle at which the table tennis ball is bounced back is more diverse, thereby achieving better training effects.

[0016] 2. Since the force applied by the athlete to the pressure plate each time they move is random, the angle at which the ping-pong ball bounces back is also random. At the same time, the air in the transition cylinder will slowly leak out through the air outlet pipe on it, causing the swing plate to swing downward slightly to reset, making the angle at which the ping-pong ball bounces back more random, allowing players to better train.

[0017] 3. In addition, when the swing plate swings, the column gear can be driven to rotate through the arc-shaped rack, and then the bidirectional screw is used to move the rotating plate away from or towards the arc-shaped rack. As the rotating plate moves, the transmission gear will intermittently engage with the rack frame, thereby causing the rotating plate to intermittently reciprocate. At the same time, when the guide frame rotates, the rack frame moves back and forth, making the meshing position of the transmission gear and the rack frame random, further increasing the randomness of the table tennis ball's rebound angle. Players can hit the table tennis ball onto the moving rotating plate, thereby better simulating the real playing scene and further improving the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the mounting bracket of the present invention.

[0021] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the first partial three-dimensional structure of the present invention.

[0023] Figure 6 It is a partially cutaway three-dimensional structural diagram of the up and down swing mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0025] Figure 8This is a schematic diagram of a third partial three-dimensional structure of the present invention.

[0026] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0027] Figure 10 This is a schematic diagram of a fourth partial three-dimensional structure of the present invention.

[0028] Figure 11 This is a schematic diagram of the first three-dimensional structure of the elastic plate of the present invention.

[0029] Figure 12 This is a schematic diagram of the second three-dimensional structure of the elastic plate of the present invention.

[0030] The parts in the accompanying drawings are marked as follows: 1-bottom plate, 2-ping pong table, 3-fixed frame, 4-mounting frame, 5-swing plate, 6-side plate, 71-elastic rope, 72-connecting rod, 73-push frame, 74-reset spring, 75-pressing plate, 81-driving gear, 82-transition air cylinder, 83-rack frame, 84-telescopic spring, 85-air pump, 86-piston frame, 87-hose, 91-bidirectional screw rod, 92-overrunning clutch, 93-column gear, 94-arc rack, 95-connecting frame, 96-rotating plate, 101-transmission gear, 102-rack frame, 103-torsion spring 1, 104-guide frame, 11-elastic plate, 12-torsion spring 2, 13-top plate. DETAILED DESCRIPTION

[0031] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, and bonding in the existing technology, which will not be described in detail here.

[0032] Example 1: A multi-angle rebound device for ball training, such as Figures 1-10 As shown, it includes a base plate 1, a table tennis table 2, a fixing frame 3, a mounting frame 4, a swing plate 5, a side plate 6, a left-right swinging mechanism and an up-down swinging mechanism. The base plate 1 is connected to the table tennis table 2 and the fixing frame 3 by bolts. The fixing frame 3 is rotatably connected to the mounting frame 4, and the swing plate 5 is rotatably connected to the mounting frame 4. The side of the mounting frame 4 is rotatably connected to two side plates 6, and the two side plates 6 are symmetrically arranged. The left-right swinging mechanism is arranged between the mounting frame 4 and the base plate 1. The left-right swinging mechanism is used to swing the swing plate 5 away from or close to the table tennis table 2. The up-down swinging mechanism is arranged on the side of the mounting frame 4 close to the fixing frame 3. The up-down swinging mechanism is used to swing the swing plate 5 up and down.

[0033] The left and right swinging mechanisms include an elastic rope 71, a connecting rod 72, a push frame 73, a return spring 74 and a pressure plate 75. Two elastic ropes 71 are connected to the side of the mounting frame 4 close to the fixed frame 3. Two connecting rods 72 are slidably connected to the fixed frame 3. The other end of each elastic rope 71 is connected to the adjacent connecting rod 72. The other end of each connecting rod 72 is connected to a push frame 73 by a bolt. The other end of each push frame 73 is provided with an inclined surface. Each push frame 73 is slidably connected to the base plate 1. A return spring 74 is connected between each push frame 73 and the base plate 1. The side of the base plate 1 away from the fixed frame 3 is rotatably connected to two pressure plates 75. The two pressure plates 75 are respectively located above the adjacent push frames 73 and respectively contact the inclined surfaces on the adjacent push frames 73. The two pressure plates 75 are symmetrically arranged.

[0034] The up and down swinging mechanism includes a driving gear 81, a transition air cylinder 82, a rack rack 83, a telescopic spring 84, an air pump 85, a piston rack 86 and a hose 87. The swing plate 5 is connected to two driving gears 81 by a flat key, and the mounting frame 4 is connected to two transition air cylinders 82. The two transition air cylinders 82 located on the mounting frame 4 are slidably connected with a rack rack 83. Each rack rack 83 is meshed with the adjacent driving gear 81. Each rack rack 83 and the adjacent transition air cylinder 82 are connected by a telescopic spring 84 through a hook. The telescopic spring 84 is used to reset the rack rack 83. Two air pumps 85 are welded on the fixed frame 3. The air pump 85 is used to inflate the transition air cylinder 82. Two piston racks 86 are slidably connected to the mounting frame 4. The two piston racks 86 are respectively slidably connected to the adjacent air pumps 85. A hose 87 is connected between the air pump 85 and the transition air cylinder 82 located on the same side of the mounting frame 4. The hose 87 is used to transport gas. There are two hoses 87 in total.

[0035] The top of each transition air cylinder 82 is connected to an air outlet pipe.

[0036] Application method: A player stands on the bottom plate 1 and launches a ping-pong ball on the ping-pong table 2, hitting the ping-pong ball onto the swing plate 5. The swing plate 5 will bounce the ping-pong ball back. Then the player catches the ping-pong ball and continues to hit the ping-pong ball onto the swing plate 5, so that the player can continuously perform table tennis training, replacing manual assisted throwing of the ball, saving time and manpower. When playing table tennis, the player will step on one of the pressure plates 75 due to the position of his feet, causing one of the pressure plates 75 to swing downward. The downward swing of the pressure plate 75 will contact the adjacent push frame 73 and push the adjacent push frame 73 to move away from the pressure plate 75. The reset spring 74 is compressed, and the push frame 73 moves away from the adjacent pressure plate 75, which will drive the adjacent connecting rod 72 and the elastic rope 71 to move away from the ping-pong ball. The table 2 moves in the direction of the mounting frame 4, thereby driving the side of the mounting frame 4 connected to the elastic rope 71 to swing away from the table tennis table 2, and causing the other elastic rope 71 to be stretched. The swinging of one side of the mounting frame 4 in the direction away from the table tennis table 2 will drive the adjacent side of the swing plate 5 to swing away from the table tennis table 2, thereby changing the angle at which the table tennis ball is bounced back by adjusting the angle of the swing plate 5. When the one side of the mounting frame 4 swings in the direction away from the table tennis table 2, it will also squeeze one of the piston frames 86, causing one of the piston frames 86 to move inward in the connected air pump 85, and the air in the air pump 85 is transported to the transition air cylinder 82 through the hose 87, thereby pushing the rack frame 83 to move downward, the telescopic spring 84 is compressed, and the rack frame 8 The downward movement of 3 will push the driving gear 81 to rotate, and the rotation of the driving gear 81 will drive the pendulum plate 5 to swing upward. The upward swing of the pendulum plate 5 will also change the angle at which the table tennis ball bounces back, thereby making the angle at which the table tennis ball is bounced back more diverse. The air in the transition air cylinder 82 will slowly leak out through the air outlet pipe on the transition air cylinder 82, and the retractable spring 84 will reset to make the rack rack 83 move upward slightly. The small upward movement of the rack rack 83 will drive the driving gear 81 to rotate slightly in the opposite direction, thereby making the pendulum plate 5 swing downward slightly and reset, making the angle at which the table tennis ball is bounced back more random, thereby achieving better training effect. In order to catch the rebounded table tennis ball, the player continues to move and no longer steps on one of the pressure plates 7 When the locking cam 73 is in the unlocked position, the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam 73 is in the unlocked position, and the locking cam

[0037] Example 2: Based on Example 1, Figure 7-10 As shown, it also includes a sliding mechanism, which is arranged between the mounting frame 4 and the swing plate 5. The sliding mechanism includes a bidirectional screw rod 91, an overrunning clutch 92, a column gear 93, an arcuate rack 94, a connecting frame 95 and a rotating plate 96. The swing plate 5 is rotatably connected to the bidirectional screw rod 91, one end of the bidirectional screw rod 91 is fixedly connected to the overrunning clutch 92, and the outer side of the overrunning clutch 92 is fixedly connected to the column gear 93. An arcuate rack 94 is welded on the side of the mounting frame 4 close to the column gear 93, and the arcuate rack 94 is meshed with the column gear 93. The bidirectional screw rod 91 is connected to the connecting frame 95 by a thread, and the end of the connecting frame 95 away from the column gear 93 is rotatably connected to the rotating plate 96. The rotating plate 96 is located on the side of the swing plate 5 close to the table tennis table 2.

[0038] The upward swing of the swing plate 5 will drive the arc-shaped rack 94 to swing downward, and the downward swing of the arc-shaped rack 94 will drive the column gear 93 to rotate. The rotation of the column gear 93 will drive the overrunning clutch 92 to rotate. The rotation of the overrunning clutch 92 will drive the two-way screw rod 91 to rotate. The rotation of the two-way screw rod 91 will drive the connecting frame 95 to move in the direction away from the arc-shaped rack 94, and the connecting frame 95 will drive the rotating plate 96 to move in the direction away from the arc-shaped rack 94. The player can hit the table tennis ball onto the moving rotating plate 96, thereby better simulating the real playing scene and further improving the training effect; the downward swing of the swing plate 5 will drive the arc-shaped rack 94 to swing upward, thereby causing the column gear 93 to rotate in the opposite direction. The overrunning clutch 92 does not rotate, so the two-way screw rod 91 will not rotate either, so that the rotating plate 96 can continue to move in the direction away from the arc-shaped rack 94 until the rotating plate 96 moves to the other end of the two-way screw rod 91, and then the rotating plate 96 will move in the direction close to the arc-shaped rack 94, and so on.

[0039] Example 3: Based on Example 2, Figures 8-10 As shown, it also includes a rotating mechanism, which is arranged on the sliding mechanism. The rotating mechanism includes a transmission gear 101, a rack frame 102, a torsion spring 103 and a guide frame 104. The upper part of the rotating plate 96 is connected to the transmission gear 101 through a flat key, and the upper part of the mounting frame 4 is slidably connected to the rack frame 102. The rack frame 102 is provided with a plurality of teeth on the side close to the transmission gear 101. The teeth on the rack frame 102 are staggered. A torsion spring 103 is connected between the connecting frame 95 and the rotating plate 96 through a hook. The torsion spring 103 is used to reset the rotating plate 96. A guide frame 104 is welded on the bidirectional screw rod 91, and the rack frame 102 is slidably connected to the guide frame 104.

[0040] The rotation of the guide frame 104 drives the rack frame 102 to move back and forth in the direction away from or close to the arc rack 94, thereby making the position of the meshing of the transmission gear 101 and the rack frame 102 random, thereby achieving the purpose of randomly adjusting the rebound angle of the table tennis ball, further improving the randomness of the rebound angle of the table tennis ball, so as to better train the players.

[0041] Example 4: Based on Example 3, Figures 8-12 As shown, an elastic plate 11 is also included, and the elastic plate 11 is clamped on the side of the rotating plate 96 close to the table tennis table 2.

[0042] The elastic plate 11 is made of rubber.

[0043] A plurality of protrusions are provided on both sides of the elastic plate 11 , and the protrusions on one side of the elastic plate 11 are larger than those on the other side.

[0044] An elastic plate 11 is provided on the rotating plate 96, which can make the table tennis ball bounce faster. The protrusion on one side of the elastic plate 11 is larger than that on the other side. During training, the rebound speed of the table tennis ball can be adjusted by turning the direction of the elastic plate 11, thereby better training the player's reaction speed.

[0045] Example 5: Based on Example 4, Figure 7 As shown, it also includes a torsion spring 2 12 and a top plate 13. A torsion spring 2 12 is connected between each side plate 6 and the mounting frame 4 through a hook. The torsion spring 2 12 is used to reset the side plate 6. Two top plates 13 are connected to the swing plate 5 through rivets. The top plates 13 are used to push the side plates 6 to swing, and each top plate 13 is in contact with the adjacent side plate 6.

[0046] The mounting frame 4 is provided with side panels 6 on both sides, which can expand the range of catching table tennis balls and better prevent the table tennis balls from falling to the ground when the players hit the table tennis balls off target. When the swing plate 5 swings upward, it will drive the top plate 13 to swing upward. The upward swinging of the top plate 13 will push the side panels 6 to swing in the direction close to the table tennis table 2. The torsion spring 12 is twisted, and when the swing plate 5 swings downward, it will drive the top plate 13 to swing downward. The top plate 13 no longer squeezes the side panels 6. The torsion spring 12 is reset to drive the side panels 6 to swing back in the direction away from the table tennis table 2. The reciprocating swinging of the side panels 6 can make the angle of the table tennis ball rebounding from the side panels 6 random.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-angle rebound device for ball training, characterized in that it includes The invention comprises a bottom plate (1), a table tennis table (2), a fixed frame (3), a mounting frame (4), a swing plate (5), a side plate (6), a left-right swing mechanism and an up-down swing mechanism. The bottom plate (1) is fixedly connected to the table tennis table (2) and the fixed frame (3). The fixed frame (3) is rotatably connected to the mounting frame (4). The mounting frame (4) is rotatably connected to the swing plate (5). The side of the mounting frame (4) is rotatably connected to two side plates (6). The two side plates (6) are symmetrically arranged. The left-right swing mechanism is arranged between the mounting frame (4) and the bottom plate (1). The left-right swing mechanism is used to swing the swing plate (5) in a direction away from or close to the table tennis table (2). The up-down swing mechanism is arranged on a side of the mounting frame (4) close to the fixed frame (3). The up-down swing mechanism is used to swing the swing plate (5) up and down. The left and right swing mechanism includes an elastic rope (71), a connecting rod (72), a push frame (73), a return spring (74) and a pressure plate (75). The mounting frame (4) is connected to two elastic ropes (71) on one side close to the fixed frame (3). The fixed frame (3) is slidably connected to two connecting rods (72). The other end of each elastic rope (71) is connected to the adjacent connecting rod (72). The other end of each connecting rod (72) is fixedly connected to a push frame (73). The other end of each push frame (73) is provided with an inclined surface. Each push frame (73) is slidably connected to the bottom plate (1). A return spring (74) is connected between each push frame (73) and the bottom plate (1). The bottom plate (1) is rotatably connected to two pressure plates (75) on one side away from the fixed frame (3). The two pressure plates (75) are symmetrically arranged. The up and down swing mechanism includes a driving gear (81), a transition air cylinder (82), a rack rack (83), a telescopic spring (84), an air pump (85), a piston rack (86) and a hose (87). Two driving gears (81) are fixedly connected to the swing plate (5), and two transition air cylinders (82) are fixedly connected to the mounting frame (4). The two transition air cylinders (82) located on the mounting frame (4) are slidably connected to the rack rack (83). Each rack rack (83) is meshed with the adjacent driving gear (81). A telescopic spring (84) is connected between each rack rack (83) and the adjacent transition air cylinder (82). Two air pumps (8 5), there are two piston racks (86) slidably connected to the mounting frame (4), and the two piston racks (86) are respectively slidably connected to the adjacent air pumps (85). The air pumps (85) and the transition air cylinder (82) on the same side of the mounting frame (4) are connected with hoses (87). There are two hoses (87). When the player steps on the pressure plate (75), the swing plate (5) swings in the direction away from or close to the table tennis table (2). The mounting frame (4) swings while squeezing the piston rack (86), and then the swing plate (5) swings up and down through the rack rack (83) and the driving gear (81), thereby changing the angle at which the table tennis ball is bounced back by adjusting the angle of the swing plate (5).

2. A multi-angle rebound device for ball training according to claim 1, characterized in that: The top of each transition air cylinder (82) is connected to an air outlet pipe.

3. A multi-angle rebound device for ball training according to claim 2, characterized in that: The invention also includes a sliding mechanism, which is arranged between the mounting frame (4) and the swing plate (5). The sliding mechanism includes a bidirectional screw rod (91), an overrunning clutch (92), a column gear (93), an arc-shaped rack (94), a connecting frame (95) and a rotating plate (96). The swing plate (5) is rotatably connected to the bidirectional screw rod (91), one end of the bidirectional screw rod (91) is fixedly connected to the overrunning clutch (92), and the outer side of the overrunning clutch (92) is fixedly connected to the column gear (93). The side of the mounting frame (4) close to the column gear (93) is fixedly connected to the arc-shaped rack (94), and the arc-shaped rack (94) is meshed with the column gear (93). The bidirectional screw rod (91) is connected to the connecting frame (95) by a thread, and the end of the connecting frame (95) away from the column gear (93) is rotatably connected to the rotating plate (96). The rotating plate (96) is located on the side of the swing plate (5) close to the table tennis table (2).

4. A multi-angle rebound device for ball training according to claim 3, characterized in that: The invention also includes a rotating mechanism, which is arranged on the sliding mechanism. The rotating mechanism includes a transmission gear (101), a rack frame (102), a torsion spring (103) and a guide frame (104). The upper part of the rotating plate (96) is fixedly connected to the transmission gear (101), the upper part of the mounting frame (4) is slidably connected to the rack frame (102), a torsion spring (103) is connected between the connecting frame (95) and the rotating plate (96), the guide frame (104) is fixedly connected to the bidirectional screw rod (91), and the rack frame (102) and the guide frame (104) are slidably connected.

5. A multi-angle rebound device for ball training according to claim 4, characterized in that: It also includes an elastic plate (11), and the elastic plate (11) is clamped on one side of the rotating plate (96) close to the table tennis table (2).

6. The multi-angle rebound device for ball training according to claim 5, characterized in that: The elastic plate (11) is made of rubber.

7. A multi-angle rebound device for ball training according to claim 6, characterized in that: A plurality of protrusions are provided on both sides of the elastic plate (11), and the protrusions on one side of the elastic plate (11) are larger than the protrusions on the other side.

8. The multi-angle rebound device for ball training according to claim 6, characterized in that: It also includes a second torsion spring (12) and a top plate (13), wherein a second torsion spring (12) is connected between each side plate (6) and the mounting frame (4), and two top plates (13) are fixedly connected to the swing plate (5), and each top plate (13) is in contact with an adjacent side plate (6).

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