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CN-224220712-U - Table tennis service posture adjusting device

CN224220712UCN 224220712 UCN224220712 UCN 224220712UCN-224220712-U

Abstract

The utility model relates to the technical field of table tennis service equipment manufacture, in particular to a table tennis service posture adjusting device which is reasonable in structure, small in size, light in weight and good in heat dissipation, and is characterized in that a pitching mechanism for adjusting pitching posture of a head of a ball service machine is arranged between the head of the ball service machine and a ball conveying channel (1), the pitching mechanism comprises a pitching base (2), a pitching spring (3), a pitching elbow (4), a pitching turbine (5), a pitching worm (6) and a pitching motor (7), the longitudinal pendulum base (2) is provided with a pipe cavity communicated with the ball conveying channel (1), a slotted hole is formed in the side wall of the longitudinal pendulum elbow (4), the longitudinal pendulum worm (6) is meshed with a tooth groove of a longitudinal pendulum turbine (5) at the inner side of the longitudinal pendulum elbow (4) through the slotted hole, and an output shaft of the longitudinal pendulum motor (7) drives the longitudinal pendulum worm (6) to rotate through a gear to drive the longitudinal pendulum turbine (5) to rotate and drive the longitudinal pendulum elbow (4) to swing in a pitching mode.

Inventors

  • YU WANLI
  • HAN CHAO
  • KONG FANJING
  • SONG YUANYUAN

Assignees

  • 威海双蛇体育器材科技有限公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (8)

  1. 1. A table tennis ball pitching attitude adjusting device, which is provided with a pitching machine head, a ball conveying channel (1) and a ball feeding base, wherein the pitching machine head is arranged on the ball feeding base through the ball conveying channel (1), and is characterized in that a pitching mechanism for adjusting pitching attitude of the pitching machine head is arranged between the pitching machine head and the ball conveying channel (1), the pitching mechanism comprises a pitching base (2), a pitching spring (3), a pitching elbow (4), a pitching turbine (5), a pitching worm (6) and a pitching motor (7), wherein the pitching base (2) is provided with a pipe cavity communicated with the ball conveying channel (1), the pitching elbow (4) is provided with an elbow main body, an inner rotating wheel (19) is symmetrically arranged at the hollow lower end of the elbow main body, the outer side of the upper end of the pitching base (2) is provided with an outer rotating wheel corresponding to the inner rotating wheel (19), the pitching base (2) is sleeved at the lower end of the pitching elbow, the inner rotating wheel is hinged with the outer rotating wheel through a wheel shaft, the pitching elbow (4) is communicated with the pitching base (2) through a pitching turbine tooth socket, at least one tooth socket is arranged on the inner circumferential surface of the pitching turbine (6) and is meshed with the inner rotating wheel (6) through the groove hole (6), and driving the pitch turbine (5) to rotate and driving the pitch elbow (4) to pitch and swing.
  2. 2. The table tennis service posture adjusting device according to claim 1 is characterized in that the ball conveying channel (1) is vertically arranged, and the upper end of the pitching elbow (4) is connected with the rear end of the machine head of the service robot.
  3. 3. The table tennis service posture adjusting device according to claim 1, wherein the lower end of the pitching spring (3) is fixed on the outer side of the pitching base (2), and the upper end is connected with the outer wall of the pitching elbow (4).
  4. 4. The table tennis service posture adjusting device according to claim 1, wherein a pitch gear box (8) is further arranged on the pitch base (2), a pinion (9) is led out of the pitch worm (6), the pinion (9) is connected with the pitch gear box (8), the rotation angle of the pitch worm (6) is converted into a digital signal by the pitch gear box and is sent into a main board, and a pitch instruction is issued by the main board to the pitch motor (7).
  5. 5. A table tennis service posture adjustment device according to claim 1, characterized in that the pitch worm (6) is located on the front side of the pitch bend (4) and engages with a tooth socket on the pitch worm wheel (5).
  6. 6. The table tennis service posture adjusting device according to claim 1, wherein two pitching springs (3) are symmetrically arranged in the pitching mechanism, the two pitching springs (3) are respectively arranged on two sides below the pitching elbow (4), and the pitching springs (3) are always in a stretching state and used for balancing the weight of a machine head of the service robot so as to realize buffering of pitching posture adjustment.
  7. 7. The table tennis service posture adjusting device according to claim 1, further comprising a yaw mechanism (20), wherein the yaw mechanism (20) is arranged on the ball conveying channel (1) and is located below the pitching mechanism, the yaw mechanism comprises a yaw joint sleeve (11), a yaw cradle head (10), a yaw gear box (12), a yaw motor (13), a yaw worm (14) and a yaw turbine (15), the yaw joint sleeve (11) comprises two coaxial sleeve bodies which are sleeved with each other, a bearing structure is arranged between the inner sleeve body and the outer sleeve body, the ball conveying channel (1) is of an integral structure, namely, an annular jogging groove and an annular boss which are matched are arranged between the inner sleeve body and the outer sleeve body, balls are distributed in the annular jogging groove, so that the inner sleeve body and the outer sleeve body can relatively rotate, further, the yaw turbine (15) is distributed on the outer wall of the inner sleeve body along the circumferential surface of the inner sleeve body, and the outer sleeve body is correspondingly arranged, so that tooth grooves of the yaw worm (14) located on the outer side of the outer sleeve body are meshed with tooth grooves of the yaw turbine (15).
  8. 8. The table tennis service gesture adjusting device according to claim 7 is characterized in that two groups of bearing structures can be arranged on the yaw joint sleeve (11), a yaw turbine (15) is arranged in a space between the two groups of bearing structures, the upper end of the yaw joint sleeve (11) is fixedly connected with the lower end of the ball conveying channel (1), the lower end sleeve body of the yaw joint sleeve (11) is arranged on the yaw holder (10), a yaw motor (13) is fixed on the yaw joint sleeve (11) through a yaw motor bracket (16), the output end of the yaw motor (13) is meshed with a yaw worm (14) through a gear, the yaw worm (14) is matched with the yaw turbine (15), so that the yaw turbine (15) and the yaw joint sleeve (11) connected with the yaw turbine are driven by the yaw motor (13) to swing in the horizontal direction, a yaw pinion (17) is led out of the yaw worm (14), and the yaw pinion (17) is connected with the yaw gear box (12) so as to convert a rotation angle signal of the yaw worm (14) into a digital signal which can be processed to control a main board, and the yaw motor (13) is controlled.

Description

Table tennis service posture adjusting device Technical field: The utility model relates to the technical field of manufacturing of table tennis service equipment, in particular to a table tennis service posture adjusting device which is reasonable in structure, small in size, light in weight and good in heat dissipation. The background technology is as follows: The existing table tennis ball serving device in the market mainly comprises a shell with a ball conveying channel, wherein a ball serving machine head is arranged at one end of the shell, a ball inlet is formed in the other end of the shell, the inlet is communicated with the conveying channel, a ball supplying mechanism continuously conveys table tennis balls into the ball conveying channel and further into the machine head, and a throwing device is arranged on the machine head to throw the balls out. In order to simulate a person to complete pitching service, rotating ball and straight ball throwing, the accurate simulation of a plurality of technical factors such as the pitching speed, the rotating gesture and the line of the table tennis thrown by the head of the ball dispenser is ensured, and the existing table tennis service device is also provided with a yaw mechanism for driving the head of the ball dispenser to swing transversely, a pitching mechanism for driving the head of the ball dispenser to swing in a pitching way and a head rotating mechanism for driving the head of the ball dispenser to rotate. It is clear that the purpose of simulating a variety of routes or ball service can be achieved only by fine combinations of yaw, pitch, and spin actions. The yaw mechanism or the pitching mechanism in the existing similar equipment is complex in structure and inconvenient to assemble and disassemble, and because the machine head of the ball serving machine has weight, the yaw mechanism or the pitching mechanism is meshed by gears, action exceeds preset swing amplitude due to swing inertia action in work, so that action accuracy is reduced, in addition, when the pitching posture of the pitching mechanism is adjusted, the weight of the machine head positioned on the front side of the upper part needs to be overcome, and specifically: when pitch attitude adjustment is carried out on the pitching mechanism, the pitching attitude of the machine head tends to decline rapidly under the action of gravity, and the pitching attitude of the machine head needs to be pulled up against the action of gravity, so that the difference of execution time of two actions is large, in order to overcome the point, the weight is assembled on the back of the machine head in the prior art to improve the stability of the pitching attitude or the pitching attitude, or a plurality of manufacturers adopt high-power devices to quickly pull up the machine head to complete the pitching attitude adjustment, so that the whole equipment has high power consumption, heat generation is aggravated, devices such as a cooling fan and the like are required to be specially additionally arranged in the equipment, and the equipment volume and the structural complexity are further increased. The invention comprises the following steps: Aiming at the defects and shortcomings in the prior art, the utility model provides the table tennis service posture adjusting device which is reasonable in structure, small in size, light in weight and good in heat dissipation. The utility model is achieved by the following measures: A table tennis ball pitching attitude adjusting device, which is provided with a pitching machine head, a ball conveying channel (1) and a ball feeding base, wherein the pitching machine head is arranged on the ball feeding base through the ball conveying channel (1), and is characterized in that a pitching mechanism for adjusting pitching attitude of the pitching machine head is arranged between the pitching machine head and the ball conveying channel (1), the pitching mechanism comprises a pitching base (2), a pitching spring (3), a pitching elbow (4), a pitching turbine (5), a pitching worm (6) and a pitching motor (7), wherein the pitching base (2) is provided with a pipe cavity communicated with the ball conveying channel (1), the pitching elbow (4) is provided with an elbow main body, an inner rotating wheel (19) is symmetrically arranged at the hollow lower end of the elbow main body, the outer side of the upper end of the pitching base (2) is provided with an outer rotating wheel corresponding to the inner rotating wheel (19), the pitching base (2) is sleeved at the lower end of the pitching elbow, the inner rotating wheel is hinged with the outer rotating wheel through a wheel shaft, the pitching elbow (4) is communicated with the pitching base (2) through a pitching turbine tooth socket, at least one tooth socket is arranged on the inner circumferential surface of the pitching turbine (6) and is meshed with the inner rotating wheel (6) through the groove hole (6), an