A pressure detection device for sports balls

Abstract

The present invention relates to the field of pressure detection technology, and in particular to a pressure detection device for sports balls, comprising a folding component, including a turntable, a tooth groove arranged on the end face of the turntable, a fan-shaped gear and a fourth channel ring distributed in an annular array on the outside of the turntable and adapted to the tooth groove; and a driving component, including a tooth ring arranged on the outer wall of the turntable; and a delivery component, including a guide plate arranged on the outer wall of the fourth channel ring, a limit block being arranged on the end face of the guide plate, and a sliding rod being arranged on the end face of the fourth channel ring; and a triggering component. The present invention controls the folding component to complete the folding and unfolding movement through the driving component. During this process, the telescopic rod in the triggering component is displaced synchronously with the folding component. When the mechanism moves to a preset position, the triggering component and the delivery component form a mechanical linkage, triggering an automatic falling mechanism to realize the falling of the ball.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure detection, in particular to a pressure detection device for sports balls. Background Art

[0002] In sports ball games, accurate pressure testing of match balls is a key component in ensuring competition fairness, athlete safety, and ball durability. Current mainstream ball pressure testing devices are generally based on the drop hammer principle, relying on a fixed mechanical structure with a vertical ball drop channel for testing. Examples include the common XYZ-2000 or ABC-PressurePro series desktop / vertical testers. These devices typically include a bulky steel support frame, bottom spring damping components, and a multi-stage diversion track system, resulting in a protruding, bulky, heavy, and non-detachable and foldable overall structure. Therefore, they are difficult to adapt to deployment requirements in confined spaces such as training field sidelines and equipment warehouses, and their large size and weight also greatly limit their mobility.

[0003] However, small-scale events held at the grassroots level, in communities, or by non-governmental organizations also require a credible method to ensure the accuracy and compliance of pressure testing for match balls. Traditional ball pressure testing devices, such as those mentioned above, are inherently large and heavy, making them difficult to transport. This significantly increases both the cost and the workload of the personnel involved, making them unsuitable for events requiring high levels of portability and deployment flexibility. Summary of the Invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a pressure detection device for sports balls.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A sports ball pressure detection device, comprising: a folding assembly including a turntable, a tooth groove provided on an end surface of the turntable, a sector gear distributed in an annular array on the outer side of the turntable and adapted to the tooth groove, and a fourth channel ring; and a driving assembly including a tooth ring provided on an outer wall of the turntable; and a delivery assembly including a guide plate provided on the outer wall of the fourth channel ring, a limit block provided on the end surface of the guide plate, and a sliding rod provided on the end surface of the fourth channel ring; and a trigger assembly including a fixed rod, a telescopic rod provided on the inner wall of the fixed rod, a top plate provided on the end surface of the telescopic rod, and a protrusion provided on the outer wall of the top plate; wherein the sector gear swings by the rotation of the turntable, thereby achieving the folding and expansion of the fourth channel ring in the vertical direction, and when the fourth channel ring reaches its highest point, a vertical falling channel is formed, at which time the protrusion contacts the sliding rod to retract the limit block, thereby achieving automatic falling detection of the ball.

[0007] As a preferred solution of a sports ball pressure detection device of the present invention, the folding component also includes a chassis, the outer wall of the chassis is provided with a fixed seat, the fan gear is movably arranged on the inner wall of the fixed seat through a support rod, the end face of the support rod is provided with a first connecting plate, the end of the first connecting plate is provided with a guide plate, and the end face of the guide plate is provided with a second connecting plate.

[0008] As a preferred solution of a sports ball pressure detection device of the present invention, wherein: a first channel ring is provided on the outer side of the turntable, a first fixed frame group is provided on the end face of the first channel ring, a first rotating rod is provided on the outer wall of the first fixed frame group, the second connecting plate and the first rotating rod are integrally formed, and a second rotating rod is provided at the end of the second connecting plate.

[0009] As a preferred solution of a sports ball pressure detection device of the present invention, wherein: a third connecting plate is provided on the end face of the second rotating rod, a second channel ring is provided on the outer side of the first channel ring, a second fixing frame group is provided on the outer wall of the second channel ring, a third rotating rod is provided on the outer wall of the second fixing frame group, the third connecting plate and the third rotating rod are integrally formed, a third channel ring is provided on the outer side of the second channel ring, and the fourth channel ring is provided on the outer side of the third channel ring.

[0010] As a preferred solution of the sports ball pressure detection device of the present invention, the driving assembly further includes a motor arranged on the outer wall of the chassis, a circular gear is provided at the output end of the motor, and the circular gear is meshed with the gear ring.

[0011] As a preferred solution of the sports ball pressure detection device of the present invention, the delivery component further includes an inner cavity arranged inside the fourth channel ring, and a sliding block is movably provided inside the inner cavity.

[0012] As a preferred solution of the sports ball pressure detection device of the present invention, one end of the sliding rod is arranged on the end surface of the sliding block, the other end of the sliding rod is provided with a groove, and the protrusion is adapted to the groove.

[0013] As a preferred solution of a sports ball pressure detection device of the present invention, the outer wall of the guide plate is provided with a guide rod, the outer wall of the sliding block is provided with a bending groove, the outer wall of the inner cavity is provided with a straight groove, and the guide rod can slide along the bending groove and the straight groove.

[0014] As a preferred solution of the sports ball pressure detection device of the present invention, the trigger assembly further includes a mounting ring provided on the outer wall of the fixing rod, and the mounting ring is fixedly connected to the end surface of the chassis.

[0015] As a preferred solution of the sports ball pressure detection device of the present invention, a connecting rod is provided on the outer wall of the telescopic rod, and the end of the connecting rod is provided on the end surface of the third channel ring.

[0016] The beneficial effects of a sports ball pressure detection device of the present invention: the present invention controls the folding component through a driving component to complete the folding and unfolding movement. During this process, the telescopic rod in the trigger component moves synchronously with the folding component. When the mechanism moves to a preset position, the trigger component and the delivery component form a mechanical linkage, triggering the automatic falling mechanism to realize the falling of the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a pressure detection device for sports balls.

[0019] Figure 2 This is a schematic diagram of the folding component structure of a sports ball pressure detection device.

[0020] Figure 3 This is a schematic diagram of the partial structure of the folding component of a sports ball pressure detection device.

[0021] Figure 4 This is a schematic diagram of the drive component structure of a sports ball pressure detection device.

[0022] Figure 5 This is a partial structural diagram of a sports ball pressure detection device.

[0023] Figure 6 This is a schematic diagram of the structure of a delivery component of a sports ball pressure detection device;

[0024] Figure 7 This is a schematic diagram of the partially disassembled structure of a pressure detection device for sports balls;

[0025] Figure 8 This is a schematic diagram of the internal structure of the fourth channel ring of a sports ball pressure detection device;

[0026] Figure 9 This is a schematic diagram of the trigger component structure of a sports ball pressure detection device.

[0027] In the figure, 1, folding assembly; 11, chassis; 12, turntable; 13, tooth groove; 14, fixed seat; 15, sector gear; 16, support rod; 17, first connecting plate; 18, guide plate; 19, second connecting plate; 110, first rotating rod; 111, first fixing frame group; 112, first channel ring; 113, second rotating rod; 114, third connecting plate; 115, third rotating rod; 116, second fixing frame group; 117, second channel ring; 118 , third channel ring; 119, fourth channel ring; 2, drive assembly; 21, motor; 22, circular gear; 23, gear ring; 3, delivery assembly; 31, inner cavity; 32, sliding block; 33, guide plate; 34, limit block; 35, sliding rod; 36, groove; 37, bending groove; 38, straight groove; 39, guide rod; 4, trigger assembly; 41, fixed rod; 42, telescopic rod; 43, connecting rod; 44, mounting ring; 45, protrusion; 46, top plate. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0031] Example 1

[0032] Reference Figures 1 to 4 , which is the first embodiment of the present invention, provides a sports ball pressure detection device, which can realize the rapid folding and expanding of the falling channel of sports balls, including a folding component 1, including a turntable 12, a tooth groove 13 opened on the end surface of the turntable 12, a fan gear 15 distributed in an annular array on the outside of the turntable 12 and adapted to the tooth groove 13, and a fourth channel ring 119; wherein, the turntable 12 is not only connected to the circular gear 22 through the tooth ring 23, but also fixedly connected to the chassis 11 through a supporting structure, but it cannot affect the space of the channel, thereby ensuring the stability of the turntable 12, the fan gear 15 only retains a part of the teeth at the bottom, and the number of its teeth needs to ensure that the device can completely perform a folding or expanding action, thereby realizing the swinging action of the fan gear 15 through the rotation of the turntable 12.

[0033] Furthermore, the driving assembly 2 includes a gear ring 23 disposed on the outer wall of the turntable 12 ; wherein the gear ring 23 can be embedded in the outer wall of the turntable 12 to avoid interference with the fixing base 14 .

[0034] In addition, the delivery component 3 includes a guide plate 33 slidably connected to the outer wall of the fourth channel ring 119, the end face of the guide plate 33 is fixedly connected to the limit block 34, and the end face of the fourth channel ring 119 is slidably connected to the sliding rod 35; wherein, the limit block 34 limits and clamps the sphere, and is designed as a multi-group, and the guide plate 33 needs to have a certain length to ensure that there is enough range for the radial movement of the limit block 34. At the same time, the end face of the limit block 34 is designed to be arc-shaped to ensure the stability of the clamping of the sphere.

[0035] In addition, the trigger assembly 4 includes a fixed rod 41, a telescopic rod 42 slidably connected to the inner wall of the fixed rod 41, a top plate 46 arranged on the end face of the telescopic rod 42, and a protrusion 45 arranged on the outer wall of the top plate 46; wherein, the fixed rod 41 is in a fixed state, and the telescopic rod 42 can be raised and lowered following the third channel ring 118. It should be noted that since the fourth channel ring 119 moves faster than the telescopic rod 42 during the expansion process, the telescopic rod 42 needs to have a certain space with the fourth channel ring 119 in the initial state. At the same time, the telescopic rod 42 needs to be close to the end position of the fourth channel ring 119 at the end position of the rise to ensure that the protrusion 45 can contact the groove 36.

[0036] Among them, the swing of the sector gear 15 is achieved through the rotation of the turntable 12, thereby realizing the folding and expansion of the fourth channel ring 119 in the vertical direction. When the fourth channel ring 119 reaches the highest point, a vertical falling channel is formed. At this time, the protrusion 45 contacts the sliding rod 35 to realize the retraction of the limit block 34, thereby realizing automatic falling detection of the sphere.

[0037] Specifically, the folding assembly 1 also includes a chassis 11, the outer wall of which is fixedly connected to a fixing seat 14, a sector gear 15 movably arranged on the inner wall of the fixing seat 14 via a support rod 16, the end face of the support rod 16 is fixedly connected to a first connecting plate 17, the end of the first connecting plate 17 is rotatably connected to a guide plate 18, and the end face of the guide plate 18 is rotatably connected to a second connecting plate 19. Among them, the chassis 11 serves as a carrier to withstand the pressure of the falling ball, and a detection device can be installed on its surface. At the same time, a battery needs to be installed inside the chassis 11 to power the motor 21. The fixing seats 14 are designed in multiple groups and are distributed in a ring array on the top wall of the chassis 11 to ensure that the sector gear 15 can achieve a swinging motion. The guide plate 18 is a suspended design to control the movement direction of the first connecting plate 17 and the second connecting plate 19.

[0038] Furthermore, a first channel ring 112 is provided on the outside of the turntable 12. A first fixing bracket assembly 111 is fixedly connected to the end surface of the first channel ring 112. A first rotating rod 110 is rotatably connected to the outer wall of the first fixing bracket assembly 111. The second connecting plate 19 and the first rotating rod 110 are integrally formed, and the end of the second connecting plate 19 is rotatably connected to a second rotating rod 113. The first fixing bracket assembly 111 is designed as a plurality of sets, and the installation positions correspond to the fixing base 14. Each set includes two separate fixing brackets.

[0039] It should be noted that the end surface of the second rotating rod 113 is rotatably connected to the third connecting plate 114, the outer side of the first channel ring 112 is provided with a second channel ring 117, the outer wall of the second channel ring 117 is fixedly connected to the second fixing frame group 116, the outer wall of the second fixing frame group 116 is rotatably connected to the third rotating rod 115, the third connecting plate 114 and the third rotating rod 115 are integrally formed, the outer side of the second channel ring 117 is provided with a third channel ring 118, and the fourth channel ring 119 is provided on the outer side of the third channel ring 118. The number of second fixing frame groups 116 corresponds to that of the first fixing frame groups 111, but the first and second fixing frame groups 111 and 116 are installed in opposite directions, thereby ensuring that the folding assembly 1 can be folded as much as possible.

[0040] At the same time, the main body of the falling channel is composed of multiple channel rings, and the distance between two adjacent channel rings cannot be too large. Since the position of each channel ring is fixed after the channel is fully expanded, when the sphere falls, the channel rings in different positions can also be used as references to judge the pressure of the sphere according to the height of the sphere's rebound. Therefore, the channel ring not only plays the role of a channel support frame, but also can be used as a reference to manually judge the pressure conditions of different spheres.

[0041] The drive assembly 2 also includes a motor 21 mounted on the outer wall of the chassis 11. The output end of the motor 21 is fixedly connected to a circular gear 22, which meshes with a ring gear 23. The motor 21 provides power input for the expansion and contraction of the folding assembly 1, and the meshing of the circular gear 22 and the ring gear 23 enables the rotation of the turntable 12.

[0042] When in use, the conventional method for detecting a ball is to control the ball to fall and impact a rebound plate. The rebound plate rotates around the rotation axis and presses down the support spring, squeezing the pressure sensor at the bottom. The sensor converts the pressure signal into an electrical signal, which is compared with the pre-stored standard data by the data processor to determine whether the ball pressure meets the standard.

[0043] Taking the opening of the falling channel as an example, the motor 21 is started, and the motor 21 controls the circular gear 22 to rotate, thereby driving the gear ring 23 and the turntable 12 to rotate synchronously. Since the surface of the turntable 12 is provided with a tooth groove 13, since the turntable 12 always rotates in one direction, the sector gear 15 rotates with the support rod 16 as the axis, thereby driving the first connecting plate 17 to rotate. The first connecting plate 17 and the second connecting plate 19 are staggered. The second connecting plate 19 makes a corresponding motion trajectory according to the movement of the first connecting plate 17, and the second connecting plate 19 makes a corresponding motion trajectory according to the movement of the first connecting plate 17. The connecting plate 19 is connected to the first fixed frame group 111, and the first channel ring 112 is raised by moving the second connecting plate 19. Similarly, the second rotating rod 113 between the second channel ring 117 and the first channel ring 112 changes the direction of the driving force, thereby realizing synchronous lifting and lowering, and the connection relationship between the third channel ring 118 and the fourth channel ring 119 is the same as that between the first channel ring 112 and the second channel ring 117. Therefore, no further description is given here. When the falling channel needs to be folded, the motor 21 can be controlled to rotate in the opposite direction.

[0044] In summary, the rotation of the turntable 12 and the tooth groove 13 drives the rotation of the sector gear 15, thereby realizing the rise or fall of multiple channel rings through the transmission between the connecting disk and the connecting plate, and then the folding or expansion of the falling channel can be completed according to actual use requirements.

[0045] Example 2

[0046] Reference Figures 2 to 7, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a method for automatically clamping and delivering sports balls.

[0047] Specifically, the delivery assembly 3 further includes an inner cavity 31 defined within the fourth channel ring 119, within which a sliding block 32 is movably disposed. The sliding block 32 slides within the inner cavity 31, so the inner cavity 31 must be sufficiently spacious to ensure that the sliding distance of the sliding block 32 is sufficient to achieve the simultaneous contraction and extension of the stop block 34. Furthermore, a spring can be designed between the outer wall of the sliding block 32 and the inner cavity 31, utilizing the spring's elastic force to reset the stop block 34, thus preventing manual resetting.

[0048] Furthermore, one end of the sliding rod 35 is fixedly connected to the end surface of the sliding block 32, and the other end of the sliding rod 35 is provided with a groove 36, and the protrusion 45 is adapted to fit into the groove 36. The top of the sliding rod 35 can be thickened, and the design of the groove 36 can ensure the accuracy of the mating between the protrusion 45 and the sliding rod 35.

[0049] Preferably, a guide rod 39 is fixedly connected to the outer wall of the guide plate 33, a bending groove 37 is formed on the outer wall of the sliding block 32, and a straight groove 38 is formed on the outer wall of the inner cavity 31, and the guide rod 39 can slide along the bending groove 37 and the straight groove 38. Specifically, the bending groove 37 is designed on one side of the outer wall of the sliding block 32, with the top of the bending groove 37 located on the side of the sliding block 32 away from the limit block 34, and the bottom of the bending groove 37 located on the side of the sliding block 32 close to the limit block 34. The straight groove 38 is provided on the side of the inner cavity 31 close to the bending groove 37, and both grooves need to ensure that the guide rod 39 can pass through stably.

[0050] The rest of the structure is the same as that of Example 1.

[0051] During use, in the initial state, the guide rod 39 is located at the bottom of the bending groove 37, thereby driving the limit block 34 through the guide plate 33 to be in a clamping state for the sports ball, and placing the ball on the surface of multiple limit blocks 34. When the sliding block 32 is subjected to a downward force, the sliding block 32 slides down along the inner cavity 31. At this time, the bending groove 37 adjusts the position of the guide rod 39 during the descent process, while the straight groove 38 is in a fixed state. Therefore, when the guide rod 39 is guided by the bending groove 37 and the straight groove 38 at the same time, it will move to the side away from the ball, thereby driving the limit block 34 to move synchronously through the guide plate 33, and releasing the limiting effect on the ball. At this time, the ball falls and the pressure detection is completed.

[0052] In summary, the downward pressure of the sliding rod 35 is used to realize the movement of the guide plate 33 and the limit block 34 to the side away from the sphere, thereby realizing the automatic falling of the sphere. This design not only realizes the automatic falling of the sphere when the folding component 1 is fully expanded, but also ensures that the sphere is in the center of the falling channel during the falling and does not come into contact with the channel ring. Different from manual delivery, it reduces the disadvantage of unstable falling of the sphere due to the tilted angle during delivery. At the same time, the falling channel has a certain height, and no manual delivery is required, which can also avoid the inconvenience of delivery caused by the height.

[0053] Example 3

[0054] Reference Figures 1 to 9 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a mechanism for triggering the automatic falling of the ball when the ball falling channel is fully opened.

[0055] Specifically, the trigger assembly 4 further includes a mounting ring 44 fixedly connected to the outer wall of the fixing rod 41, and the mounting ring 44 is fixedly connected to the end surface of the chassis 11. The mounting ring 44 fixes the fixing rod 41 to ensure the stability of its position.

[0056] Furthermore, the outer wall of the telescopic rod 42 is fixedly connected with a connecting rod 43, and the end of the connecting rod 43 is fixedly connected to the end surface of the third channel ring 118. The telescopic rod 42 rises synchronously with the third channel ring 118 through the connecting rod 43.

[0057] The rest of the structure is the same as that of Example 2.

[0058] During use, when the folding component 1 begins to expand and rise, the third channel ring 118 drives the telescopic rod 42 to rise synchronously through the connecting rod 43. Since the rising height between the telescopic rod 42 and the fixed rod 41 is fixed, when the telescopic rod 42 moves to the end and no longer rises, the folding component 1 is also fully expanded, and the telescopic rod 42 first completes the stopping of the rising action. In the process of the fourth channel ring 119 continuing to rise, the protrusion 45 contacts the groove 36 on the top wall of the sliding rod 35, realizing the downward pressing process of the sliding rod 35, and completing the automatic release response of the ball.

[0059] In summary, when the fourth channel ring 119 and the telescopic rod 42 complete their ascent and remain stationary, the protrusion 45 contacts the sliding rod 35, driving the limit block 34 to form a limit contact with the ball, thereby achieving automatic delivery of the sports ball.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sports ball pressure detection device, characterized in that: include, A folding assembly (1) comprising a turntable (12), a tooth groove (13) provided on the upper end surface of the turntable (12), sector gears (15) distributed in an annular array on the upper side of the turntable (12) and adapted to the tooth groove (13), and a fourth channel ring (119); and A drive assembly (2) comprising a gear ring (23) disposed on the outer wall of the turntable (12); and A delivery assembly (3) includes a guide plate (33) disposed on the outer wall of the fourth channel ring (119), a limit block (34) is disposed on the end face of the guide plate (33), the limit block (34) limits and clamps the sphere, the limit blocks (34) are designed in multiple groups, and a sliding rod (35) is disposed on the end face of the fourth channel ring (119); and The trigger assembly (4) comprises a fixed rod (41), a telescopic rod (42) arranged on the inner wall of the fixed rod (41), a top plate (46) arranged on the end surface of the telescopic rod (42), and a protrusion (45) arranged on the outer wall of the top plate (46); wherein, The folding assembly (1) realizes the swinging of the sector gear (15) by the rotation of the turntable (12), thereby realizing the folding and expansion of the fourth channel ring (119) in the vertical direction. When the fourth channel ring (119) reaches the highest point, a vertical falling channel is formed. At this time, the protrusion (45) contacts the sliding rod (35) to realize the retraction of the limit block (34), thereby realizing the automatic falling detection of the sphere.

2. A sports ball pressure detection device according to claim 1, characterized in that: The folding assembly (1) further comprises a chassis (11), the outer wall of the chassis (11) is provided with a fixing seat (14), and the sector gear (15) is movably provided on the inner wall of the fixing seat (14) via a support rod (16). The end surface of the support rod (16) is provided with a first connecting plate (17), the end of the first connecting plate (17) is provided with a guide plate (18), and the end surface of the guide plate (18) is provided with a second connecting plate (19).

3. A sports ball pressure detection device as claimed in claim 2, characterized in that: A first channel ring (112) is provided on the upper side of the turntable (12), a first fixing frame group (111) is provided on the end surface of the first channel ring (112), a first rotating rod (110) is provided on the outer wall of the first fixing frame group (111), the second connecting plate (19) and the first rotating rod (110) are integrally formed, and a second rotating rod (113) is provided at the end of the second connecting plate (19).

4. A sports ball pressure detection device as claimed in claim 3, characterized in that: A third connecting plate (114) is provided on the end surface of the second rotating rod (113), a second channel ring (117) is provided on the upper side of the first channel ring (112), a second fixing frame group (116) is provided on the outer wall of the second channel ring (117), a third rotating rod (115) is provided on the outer wall of the second fixing frame group (116), the third connecting plate (114) and the third rotating rod (115) are integrally formed, a third channel ring (118) is provided on the upper side of the second channel ring (117), and the fourth channel ring (119) is provided on the upper side of the third channel ring (118).

5. A sports ball pressure detection device as claimed in claim 4, characterized in that: The driving assembly (2) further includes a motor (21) arranged on the outer wall of the chassis (11), and a circular gear (22) is provided at the output end of the motor (21), and the circular gear (22) is meshedly connected with the gear ring (23).

6. A sports ball pressure detection device as claimed in claim 5, characterized in that: The delivery assembly (3) further comprises an inner cavity (31) arranged inside the fourth channel ring (119), and a sliding block (32) is movably provided inside the inner cavity (31).

7. A sports ball pressure detection device according to claim 6, characterized in that: One end of the sliding rod (35) is arranged on the end surface of the sliding block (32), and the other end of the sliding rod (35) is provided with a groove (36), and the protrusion (45) is adapted to the groove (36).

8. A sports ball pressure detection device according to claim 7, characterized in that: The outer wall of the guide plate (33) is provided with a guide rod (39), the outer wall of the sliding block (32) is provided with a bending groove (37), and the outer wall of the inner cavity (31) is provided with a straight groove (38), and the guide rod (39) can slide along the bending groove (37) and the straight groove (38).

9. A sports ball pressure detection device according to claim 8, characterized in that: The trigger assembly (4) further includes a mounting ring (44) arranged on the outer wall of the fixing rod (41), and the mounting ring (44) is fixedly connected to the end surface of the chassis (11).

10. The sports ball pressure detection device according to claim 9, characterized in that: A connecting rod (43) is provided on the outer wall of the telescopic rod (42), and the end of the connecting rod (43) is provided on the end surface of the third channel ring (118).

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