Swing test device and method of operation thereof

Abstract

The application discloses a swing test device and a working method thereof, and relates to the technical field of swing test, wherein the test device comprises a rack, a driving mechanism and a connecting mechanism, the driving mechanism comprises a driving assembly and a swing assembly, and the swing assembly is rotatably installed on the rack; the driving assembly is installed on the rack and drives the swing assembly to reciprocating swing around the installation position through a driving end; the swing assembly is connected with a to-be-tested swing through the connecting mechanism, so that the to-be-tested swing synchronously swings with the swing assembly; and the working method uses the test device. The swing is coupled with the motion track of the swing assembly, the device runs more smoothly and stably; when the swing assembly reaches the limit position, the driving end of the driving assembly and the swing assembly are not in impact contact, the damage probability of the driving assembly is reduced, and the service life is prolonged; the test device is connected to the swing near the suspension end position through the method, the swing stroke of the swing can be enlarged, and the requirement for the overall size of the test device is reduced.

Description

Technical Field

[0001] This application relates to the field of swing testing technology, and in particular to a swing testing device and its working method. Background Technology

[0002] Swings are a common recreational equipment in communities, playgrounds, parks, and other places. The quality of a swing at the factory directly affects the safety of users. Therefore, before a swing is put into use on the market, it needs to undergo a complete fatigue swing test to verify whether its structural strength and service life meet safety standards.

[0003] In existing technologies, such as the patent CN218381552U, a swing is driven by a motor, a wheel, and a connecting rod to achieve reciprocating oscillation, thereby completing fatigue testing. However, this method has the following drawback: the motor's output shaft is directly connected to the connecting rod via the wheel. During the swing's oscillation, significant inertia is generated, especially when the swing reaches its extreme position. The resulting impact force acts directly on the radial direction of the motor's output shaft, easily causing damage to the motor shaft, connecting bearings, and other components, affecting the motor's operational accuracy and lifespan. Therefore, how to improve existing swing testing equipment to overcome these problems is a problem urgently needing to be solved by those skilled in the art. Summary of the Invention

[0004] One of the objectives of this application is to provide a swing sway testing device.

[0005] Another objective of this application is to provide a working method for testing the swing motion of a swing.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a swing swing testing device, comprising a frame, a drive mechanism, and a connecting mechanism. The drive mechanism includes a drive component and a swing component, the swing component being rotatably mounted on the frame. The drive component is mounted on the frame and drives the swing component to reciprocate around its mounting position via a drive end. The swing component is connected to the swing to be tested via the connecting mechanism, so that the swing to be tested swings synchronously with the swing component. The extreme positions of the swing component include a first extreme position and a second extreme position, which are opposite in position. During testing, when the swing component swings towards the first extreme position, the drive end of the drive component maintains a distance from the swing component; when the swing component is at the first extreme position, the drive end of the drive component and the swing component maintain a distance. The swing components are in a contact state without impact. When the swing component swings back from the first extreme position to the second extreme position, the drive component loads the swing component through its drive end. The drive component includes a rotating device and a drive member. The rotating device is mounted on the frame, and the drive member is mounted on the output end of the rotating device, so that the drive member rotates unidirectionally under the drive of the rotating device. The swing component is rotatably mounted on the frame through its middle part, and a first loading part is provided in the middle of the side of the swing component near the drive member. During testing, the drive end of the drive member is adapted to contact and engage with the first loading part when the swing component is at the first extreme position, so that the drive member squeezes the first loading part through its drive end to drive the swing component to swing back.

[0007] Preferably, the oscillating component has a first loading portion with a groove structure at the center of one side near the driving member, and a second loading portion is provided on one side of the first loading portion. During the oscillation of the oscillating component from the second limit position to the first limit position, the driving end of the driving member contacts and engages with the second loading portion and applies load. When the oscillating component reaches the first limit position, the driving end of the driving member moves from the second loading portion into the first loading portion. The driving member has a plurality of driving ends, which are arranged at equal intervals along the circumferential rotation direction of the driving member. The driving member always engages with the oscillating component through one of the driving ends. When one of the driving ends disengages from the oscillating component, the adjacent driving end contacts the oscillating component.

[0008] Preferably, the swing assembly includes a swing plate, which is rotatably mounted on the frame via a central portion; the swing plate has first loading portions symmetrically arranged on both sides of the central portion, and the swing plate has second loading portions on both sides of the first loading portions; based on the detachable position adjustment of the swing plate, the first loading portions and second loading portions at different positions cooperate with the driving end of the driving component.

[0009] Preferably, the driving end of the driving member is equipped with a roller, so that the driving member forms a rolling engagement with the oscillating assembly through the roller.

[0010] Preferably, the swing assembly has multiple spaced mounting positions along its length. Based on the cooperation and connection of different mounting positions with the connecting mechanism, the swing amplitude of the swing can be adjusted or used for swing testing of different models of swings.

[0011] Preferably, the swing assembly includes a swing plate and a swing rod. The swing plate is rotatably mounted on the frame via its central portion and is used to cooperate with the drive end of the drive assembly. The swing rod is detachably mounted on the swing plate and is provided with a plurality of mounting positions for cooperating with the connecting mechanism.

[0012] Preferably, the frame is provided with an arc-shaped track, which is concentric with the rotation center of the swing component; the swing test device further includes a shock-absorbing mechanism, which includes two shock-absorbing components disposed at both ends of the arc-shaped track, so that the arc-shaped track constrains the deformation direction of the shock-absorbing components; the swing component is adapted to cooperate with the shock-absorbing components at its ends, so that during the swing of the swing component to the extreme position, the impact force of the swing component is absorbed by the elastic deformation of the shock-absorbing components.

[0013] Preferably, the connecting mechanism includes a connecting rod and a clamping assembly, the clamping assembly clamping and fixing the rope to the swing, one end of the connecting rod being rotatably connected to the clamping assembly, and the other end of the connecting rod being rotatably connected to the swinging assembly.

[0014] A method for testing the swing sway, using the aforementioned swing sway testing equipment, includes the following steps: S1 Swing load selection: Select appropriate counterweights and install them on the swing seat plate according to the specifications of the swing to be tested; S2 Swing connection to testing equipment: Connect one end of the swing rope to the connecting mechanism; the connection point between the connecting mechanism and the rope is located between the suspension end of the rope and the seat plate; along the length of the rope, the distance from the connection point to the suspension end is less than the distance to the seat plate; S3 Swing amplitude adjustment: According to the swing amplitude required by the test plan, connect the other end of the connecting mechanism to different positions on the swing component to complete the preset adjustment of the swing amplitude; S4 Swing test: Activate the drive component to drive the swing component to reciprocate around the installation position, thereby driving the swing to swing synchronously through the connecting mechanism.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: (1) The present invention drives the swing to perform swing test by cooperating with the swing component and the connecting mechanism. The swing component and the swing cycle are synchronized, that is, the movement trajectory of the swing and the swing component are coupled. Compared with the reciprocating sliding structure, the effect of the quick return effect can be reduced, making the whole equipment run more smoothly and stably. In addition, when the swing component swings to the limit position, the driving end of the drive component and the swing component are in a non-impact contact state. Therefore, the impact force generated by the swing test will not directly act on the drive component. The impact force is borne by the frame, which effectively reduces the probability of damage to the drive component and extends its service life.

[0016] (2) In the working method of swing test, the swing rope and the connecting mechanism are connected near the suspension end. This connection method can amplify the swing stroke through a small swing amplitude, thereby reducing the overall size requirements of the test equipment. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure used for testing the existing swing equipment.

[0018] Figure 2 This is a schematic diagram of the overall structure of the swing test device of the present invention when connected to the swing to be tested.

[0019] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the swing test device of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the drive component and the swing component of the present invention when they are in cooperation.

[0021] Figure 5 This is a schematic diagram of the specific structure of the swing plate of the present invention.

[0022] Figure 6This is a schematic diagram of the structure of the swing component when it is in the first extreme position and cooperates with the drive component in Embodiment 1 of the present invention.

[0023] Figure 7 This is a schematic diagram illustrating the principle of the driving component driving the swing component to swing towards the second extreme position in Embodiment 1 of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure in Embodiment 1 of the present invention, showing the swing component maintaining a distance from the driving component when swinging towards the first extreme position.

[0025] Figure 9 This is a schematic diagram of the structure of the swing component in the second embodiment of the present invention when it is in the first extreme position and cooperates with one of the driving ends.

[0026] Figure 10 This is a schematic diagram illustrating the principle of the driving end driving the swing component to rotate from the first extreme position to the second extreme position in Embodiment 2 of the present invention.

[0027] Figure 11 This is a schematic diagram of the structure of the swing component when it is in the second limit position and cooperates with the adjacent drive end in Embodiment 2 of the present invention.

[0028] Figure 12 This is a schematic diagram illustrating the principle of how adjacent driving ends drive the swing assembly to rotate from the second limit position to the first limit position in Embodiment 2 of the present invention.

[0029] Figure 13 This is a schematic diagram of the shock absorption mechanism of the present invention.

[0030] In the diagram: 100, swing; 101, rope; 102, seat plate; 200, motor; 300, rotating wheel; 400, connecting rod; 500, clamping mechanism; 1, frame; 2, drive mechanism; 21, drive assembly; 211, rotating device; 212, drive component; 2121, drive end; 2122, roller; 22, swing assembly; 221, swing plate; 2211, first loading part; 2212, second loading part; 222, swing rod; 2221, mounting hole; 3, connecting mechanism; 31, connecting rod; 32, clamping assembly; 4, test frame; 5, counterweight; 6, arc track; 7, shock absorption mechanism; 71, shock absorption assembly; 711, spring; 712, shock absorption block. Detailed Implementation

[0031] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0033] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0034] To facilitate understanding of the technical solution of this application, the specific process of the existing swing test (e.g., 100 swings) will be briefly described below: Figure 1 As shown, when conducting the swing test of the swing 100, the swing 100 needs to be installed on the test frame 4, and a counterweight 5 needs to be placed on the swing 100 to simulate the user's weight in a real-world usage scenario. Specifically, the swing 100 includes two ropes 101 and a seat plate 102; the seat plate 102 is used to place the counterweight 5, and both ends of the seat plate 102 are connected to the test frame 4 via the ropes 101, so that the seat plate 102 and the placed counterweight 5 are suspended in the air.

[0035] In existing technology, the testing equipment used to test the aforementioned swing 100 includes a motor 200, a rotating wheel 300, a connecting rod 400, and a clamping mechanism 500. The clamping mechanism 500 is clamped and fixed at the position of the seat plate 102. The edge of the rotating wheel 300 is rotatably connected to one end of the connecting rod 400, and the other end of the connecting rod 400 is movably connected to the clamping mechanism 500. During testing, the motor 200 drives the rotating wheel 300 to perform circular motion, and the rotating wheel 300 drives the connecting rod 400 to slide back and forth, thereby pushing the swing 100 to swing back and forth for fatigue testing. However, this structure connects the output shaft of motor 200 directly to swing 100 via wheel 300, connecting rod 400 and clamping mechanism 500. When swing 100 swings to its limit position, the inertia of swing 100 itself and counterweight 5 will generate a large impact force, which will be directly transmitted to the output shaft of motor 200. During long-term testing, this can easily cause bending deformation of the output shaft of motor 200, reduce the operating accuracy of motor 200 and shorten its service life.

[0036] Therefore, the inventors of this application have developed a swing testing device, one embodiment of which is, for example... Figures 2 to 12As shown, it includes a frame 1, a drive mechanism 2, and a connecting mechanism 3; the drive mechanism 2 includes a drive component 21 and a swing component 22, the swing component 22 is rotatably mounted on the frame 1, and the swing component 22 is connected to the rope 101 of the swing 100 through the connecting mechanism 3; the drive component 21 is mounted on the frame 1, and its drive end 2121 is driven by the swing component 22.

[0037] Understandably, when conducting the swing test of the swing 100, the drive component 21 is activated, which drives the swing component 22 to swing back and forth around the rotating mounting point. The swing component 22 drives the swing 100 to swing synchronously through the connecting mechanism 3. That is, the swing period of the swing component 22 is synchronized with the swing period of the swing 100, thereby completing the fatigue swing test of the preset number of times. Specifically, the reciprocating oscillation process of the pendulum component 22 includes two opposite pendulum strokes. During testing, for at least one of the pendulum strokes, when the pendulum component 22 swings towards its extreme position, the drive end 2121 of the drive component 21 maintains a distance from the pendulum component 22. When the pendulum component 22 is at its extreme position, the drive end 2121 of the drive component 21 and the pendulum component 22 are in a contact state without impact. That is, the interaction force between the drive end 2121 and the pendulum component 22 is small and negligible, and will not have an impact on the drive end 2121 of the drive component 21. When the pendulum component 22 swings back from its extreme position, the drive component 21 loads and drives the pendulum component 22 through the drive end 2121, providing the power input to maintain the oscillation.

[0038] Therefore, the drive assembly 21 and the swing assembly 22 are intermittently coupled. The drive assembly 21 only applies driving force when the swing assembly 22 swings back from the extreme position. When the swing assembly 22 is at the extreme position or swings back to the maximum angle from the extreme position, it is the moment when the maximum inertial impact force is generated. At this time, the drive end 2121 and the swing assembly 22 are independent of each other, and the frame 1 bears this impact force. The drive assembly 21 does not need to bear this impact load, which can significantly improve the service life and operational stability of the drive assembly 21.

[0039] Furthermore, this application achieves synchronous control of the swing process of the swing 100 through the swing component 22, which enables the swing 100 and the motion trajectory of the swing component 22 to form a natural coupling. Compared with the reciprocating sliding structure used in the prior art, this structure can reduce the influence of the quick return effect and reduce the occurrence of dead point positions, thereby achieving a smooth transmission of driving force and making the swing 100 swing more natural and smooth.

[0040] Those skilled in the art will understand that the oscillating assembly 22 comprises two pendulum strokes in opposite directions during its oscillation. Figures 6 to 12Taking the direction shown as an example, the two pendulum strokes can be defined as the first pendulum stroke and the second pendulum stroke, respectively; in the first pendulum stroke, the oscillating component 22 rotates clockwise to the direction shown. Figure 6 or Figure 9 The first extreme position is shown; during the second pendulum stroke, the oscillating component 22 rotates counterclockwise to the position shown. Figure 8 or Figure 11 The second extreme position is shown.

[0041] It is important to understand that during the oscillation of the pendulum component 22, the drive component 21 may load the pendulum component 22 during its first pendulum stroke; it may load the pendulum component 22 during its second pendulum stroke; or it may load the pendulum component 22 during both the first and second pendulum strokes. For ease of understanding, the following will use two specific embodiments as examples: one in which the drive component 21 loads the pendulum component 22 during its first pendulum stroke, and the other in which the drive component 21 loads the pendulum component 22 during both the first and second pendulum strokes.

[0042] Example 1: like Figures 6 to 8 As shown, the swing assembly 22 is rotatably mounted on the frame 1 via its central portion. A first loading portion 2211 is provided in the central portion of the swing assembly 22 near the drive member 212. The drive assembly 21 includes a rotating device 211 and a drive member 212. The rotating device 211 is fixedly mounted on the frame 1, and the drive member 212 is fixedly mounted on the output end of the rotating device 211. The rotating device 211 is common knowledge known to those skilled in the art and can be a motor, a rotary cylinder, or a rotary hydraulic cylinder, etc. In this application, a motor is preferred.

[0043] It is understandable that the cooperation process between the drive component 21 and the swing component 22 can be divided into three stages. The first stage: as Figure 6 As shown, at this time, the swing component 22 is in the first extreme position, and the driving end 2121 of the driving component 21 and the swing component 22 are in a contact state without impact. Second stage: as shown Figure 7 As shown, the driving component 212 rotates clockwise under the drive of the rotating device 211. The driving end 2121 pushes the first loading part 2211 to complete the driving loading of the swing component 22, so that the swing component 22 swings counterclockwise to the second limit position. Third stage: as shown Figure 8 As shown, under the gravity of the swing 100 itself and the counterweight 5, the swing component 22 will swing towards the first extreme position, at which time the drive end 2121 and the swing component 22 maintain a distance. This cycle repeats, that is, the load is applied during the first pendulum stroke to realize the swing test of the swing 100.

[0044] Therefore, it can be seen that by simply rotating the drive component 212 in one direction, and through the intermittent squeezing contact between the drive end 2121 and the first loading part 2211, as well as the autonomous return swing under the weight of the swing 100 itself, the continuous reciprocating swing test of the swing 100 can be achieved. This driving method only relies on the unidirectional rotation of the drive component 212 to complete the drive, and the structure and control logic are simple. In addition, this driving method can reserve sufficient space and time interval for the drive component 212 to disengage. That is, when the swing assembly 22 moves to the two extreme positions, the drive component 212 and the swing assembly 22 are in contact or disengagement, which can greatly reduce the impact force acting on the rotating device 211.

[0045] It should be noted that this embodiment does not limit the specific structure of the first loading part 2211; for example, as shown in the figure... Figure 6 As shown, the swing assembly 22 has an overall elongated shape, and the first loading part 2211 is a protrusion structure protruding from the outside of the swing assembly 22; as Figure 9 As shown, the first loading part 2211 may also adopt a groove structure recessed in the middle of the swing assembly 22, and the opening of the groove is set towards the drive end 2121.

[0046] Example 2: like Figures 9 to 12 As shown, the swing assembly 22 and the drive assembly 21 are installed in the same way as in the first embodiment above. The first loading part 2211 is a groove structure that is recessed inward in the middle of the swing assembly 22. The difference is that a second loading part 2212 is provided on the lower side of the swing assembly 22 located on the first loading part 2211. Multiple drive ends 2121 are provided on the drive member 212, and the multiple drive ends 2121 are arranged at equal intervals along the circumferential rotation direction of the drive member 212.

[0047] Understandably, the following will use two adjacent counterclockwise driving ends 2121 as an example to describe in detail the entire cooperation process between the driving component 21 and the swing component 22. The two adjacent driving ends 2121 can be labeled as the first driving end and the second driving end, respectively. The cooperation process between the driving component 21 and the swing component 22 can be divided into four stages, the first stage being: ... Figure 9 As shown, at this time, the swing component 22 is in the first extreme position, the first drive end is exactly located inside the first loading part 2211, and there is no impact force contact between it and the swing component 22. At this time, the second drive end and the second loading part 2212 are in a spaced-out state. Second stage: as shown Figure 10As shown, the driving member 212 rotates clockwise under the drive of the rotating device 211, causing the first driving end to press against the top wall of the groove, thereby pushing the swing assembly 22 to swing counterclockwise. During this process, the second driving end and the second loading part 2212 remain in a spaced-out state. Third stage: as shown Figure 11 As shown, when the swing assembly 22 swings counterclockwise to the second limit position, the first driving end is disengaged from the groove, and the second driving end and the second loading part 2212 are in a contact engagement state without impact. Fourth stage: As shown... Figure 12 As shown, the driving member 212 continues to rotate clockwise under the drive of the rotating device 211, and the second driving end squeezes the second loading part 2212, pushing the swing assembly 22 to swing towards the first extreme position. This cycle repeats to achieve loading and driving of the swing assembly 22 in both the first and second pendulum strokes.

[0048] It should be understood that during the driving process of the driving component 212, only one driving end 2121 always cooperates with the swing component 22, and when the swing component 22 reaches the first limit position, the driving end 2121 of the driving component 212 moves from the second loading part 2212 into the first loading part 2211. It should be noted that the cooperation between the driving end 2121 and the first loading part 2211 can be the entire pendulum stroke, or it can be completed only within a segment of the pendulum stroke, as long as sufficient swing power is ensured for the swing component 22. In this application, to ensure driving stability, the loading stroke between the driving end 2121 and the first loading part 2211 is set to the entire pendulum stroke of the swing component 22. Therefore, when the driving end 2121 disengages from the first loading part 2211 and the swing component 22, the next adjacent driving end 2121 contacts and cooperates with the second loading part 2212 of the swing component 22.

[0049] It should be noted that both embodiments can meet practical needs, and those skilled in the art can choose according to the actual situation. In this application, the loading method of the swing component 22 preferably adopts the above-described embodiment two, and the following content will be described in detail using embodiment two as an example.

[0050] In this embodiment, the number of driver terminals 2121 can be two, three, four, or more; such as Figures 9 to 11 As shown, in this application, four drive ends 2121 are preferably used. The four drive ends 2121 are evenly distributed along the rotation axis of the drive member 212, so that the drive member 212 can complete four drive actions for each rotation.

[0051] It should be understood that frictional loss occurs when the drive end 2121 and the swing assembly 22 come into contact and are pressed together, which affects the service life of the drive end 212 and the swing assembly 22. Therefore, in order to solve the above-mentioned technical problems, the drive end 2121 and the swing assembly 22 are optimized and improved in this application as follows.

[0052] like Figure 4 As shown, a roller 2122 can be installed on the drive end 2121 to convert the sliding friction between the drive component 212 and the swing component 22 into rolling friction, thereby reducing wear and improving the smoothness of operation.

[0053] like Figure 5 As shown, the swing assembly 22 includes a swing plate 221, which is rotatably mounted on the frame 1 via its central portion. First loading portions 2211 are symmetrically arranged on both the left and right sides of the central portion of the swing plate 221, and second loading portions 2212 are arranged on both the upper and lower sides of the swing plate 221 above and below the first loading portions 2211. This effectively provides four force-bearing parts on the swing plate 221 that cooperate with the drive end 2121. Therefore, when the swing plate 221 wears out due to long-term contact, it can be flipped upside down or leftside and right and reinstalled for continued use, significantly extending the overall service life of the swing plate 221 and reducing the replacement cost of easily damaged parts of the equipment.

[0054] Further preferably, the swing assembly 22 has multiple spaced mounting positions along its length. These mounting positions can be connected to the connecting mechanism 3 via fasteners. Different mounting positions can meet different swing amplitude requirements for different test conditions, or can be connected to different models of the swing 100 under test, thereby improving the flexibility of the testing equipment. The mounting positions can be configured in various ways, including but not limited to the following two: Method 1 (not shown): The mounting positions are multiple mounting holes 2221 spaced apart along the length of the swing plate 221. That is to say, the swing assembly 22 is an integral swing plate 221, and the loading part and the mounting holes 2221 are both integrated on the swing plate 221.

[0055] Method 2: For example Figure 4 As shown, the swing assembly 22 also includes a swing rod 222, which is detachably mounted on the swing plate 221. The mounting positions are multiple mounting holes 2221 spaced apart along the length of the swing rod 222. It can be understood that the swing assembly 22 is divided into two detachable parts: the swing plate 221 serves as the basic load-bearing swing structure mounted on the frame 1, while the swing rod 222 is connected to the connecting mechanism 3. This split design facilitates later maintenance and replacement.

[0056] It should be noted that both methods can meet practical needs, and those skilled in the art can choose according to the actual situation. However, this application preferably adopts the second method, that is, the combination of pendulum 221 and pendulum rod 222. Therefore, the following specific embodiments will also be described using the second method as an example.

[0057] Specifically, such as Figure 5 As shown, the swing plate 221 has a width center line X and a length center line Y that are perpendicular to each other. The rotation point of the swing plate 221 is located at the intersection of X and Y. The swing plate 221 is symmetrically arranged with respect to the two center lines X and Y. That is, the swing plate 221 simultaneously satisfies the structural features of vertical symmetry and horizontal symmetry. Moreover, the swing plate 221 can adopt an integrated molding structure, which makes it easy to ensure the processing and assembly accuracy and the overall structural strength is high.

[0058] More specifically, such as Figure 5 As shown, the swing plate 221 is a vertically elongated structure with inwardly recessed arc-shaped grooves on its left and right sides. This area is the first loading part 2211, which is the position where the width of the swing plate 221 is the smallest. The top and bottom ends of the swing plate 221 are arrow-shaped or triangular structures, namely the second loading parts 2212. To reduce stress concentration and optimize the structural appearance, rounded transition structures are provided at the corners of the swing plate 221. For example, the top and bottom ends of the swing plate 221 are rounded, and the junctions between the grooves and the top and bottom ends are also rounded. Figures 9 to 12 As shown, during the swinging process of the pendulum plate 221 driven by the driving end 2121, the driving end 2121 forms a contact fit with the inner top side of the groove at the right end of the pendulum plate 221, and also forms a contact fit with the second loading part 2212 at the lower right end of the pendulum plate 221. Therefore, the mating surfaces of the first loading part 2211 and the second loading part 2212 with the driving end 2121 can be designed as curved surfaces, planes, or a combination of curved surfaces and planes.

[0059] In this embodiment, as Figure 13 As shown, an arc-shaped track 6 is embedded or externally mounted on the frame 1. The arc-shaped track 6 is located at the lower end of the swing component 22, and the rotation center of the arc-shaped track 6 is concentric with that of the swing component 22. The swing 100 swing test equipment also includes a shock-absorbing mechanism 7, which includes two shock-absorbing components 71 disposed at both ends of the arc-shaped track 6. The shock-absorbing component 71 includes a spring 711 and a shock-absorbing block 712. The shock-absorbing block 712 is slidably disposed on the inner side of both ends of the arc-shaped track 6, and the shock-absorbing block 712 is correspondingly connected to the outer side of both ends of the arc-shaped track 6 or the frame 1 through the spring 711. The bottom end of the swing rod 222 extends into the arc-shaped track 6, and the bottom end of the swing rod 222 can also be slidably connected to the arc-shaped track 6 through a rolling slider.

[0060] Understandably, when the swing arm 222 swings to its limit position, the bottom end of the swing arm 222 will first contact the shock absorber 712, and the shock absorber 712 will compress the spring 711 and slide along the end of the arc track 6. The impact force is absorbed by the elastic deformation of the spring 711, which can reduce the impact on the frame 1 and also reduce the noise generated by the impact.

[0061] In this embodiment, as Figure 2 and Figure 3 As shown, the connecting mechanism 3 includes a connecting rod 31 and a clamping assembly 32. The clamping assembly 32 is fixed at the position of the rope 101 of the swing 100. The two ends of the connecting rod 31 are respectively hinged to the clamping assembly 32 and the end of the swing assembly 22.

[0062] Understandably, during the swing of the swing assembly 22, the rope 101 is pulled by the connecting rod 31 to make the swing 100 swing. Both ends of the connecting rod 31 are hinged, and the connecting rod 31 will change angle during force transmission. This allows it to adaptively adjust its angle to match the swing, reducing the large additional stress caused by the rigid connection forcibly twisting the rope 101. This makes the swing of the swing 100 more natural and closer to the force state in actual use scenarios. It should be noted that the clamping assembly 32 is common knowledge to those skilled in the art. For example, a pair of clamps can be used, with the clamps connected by bolts for a detachable locking connection, clamping and fixing the rope 101 between the two clamps.

[0063] Another aspect of this application provides a method for testing the swing sway, using the aforementioned swing sway testing equipment, comprising the following steps: S1 Swing 100 Load Selection: Based on the specifications of the swing 100 to be tested, select a suitable counterweight 5 and install it on the seat plate 102 of the swing 100.

[0064] Connecting the S2 swing 100 to the testing equipment: Fix the clamping assembly 32 at the rope 101 of the swing 100. Along the length of the rope 101, the distance between the clamping assembly 32 and the suspension end of the rope 101 is less than the distance between the clamping assembly 32 and the seat plate 102, that is, the clamping assembly 32 is located at the upper-middle position of the rope 101. It should be noted that... Figure 1 As shown, in the existing swing test of the swing 100, the connection point between the swing device and the swing 100 is the seat plate 102. We know that the farther away from the suspension end of the rope 101, the greater the swing amplitude. That is to say, the test device needs a sufficiently large stroke to meet the swing amplitude requirements. However, by setting the clamping component 32 in the upper middle position of the rope 101, the test device can amplify the swing stroke of the swing 100 with a smaller movement amplitude, thereby reducing the overall size requirements of the device.

[0065] S3 Swing Amplitude Adjustment: According to the swing amplitude required by the test plan, connect the end of the connecting rod 31 with the mounting hole 2221 at the corresponding position of the swing rod 222.

[0066] S4 Swing Test: The drive assembly 21 is activated to drive the swing assembly 22 to swing back and forth around the installation position, which in turn drives the swing 100 to swing synchronously through the connecting mechanism 3. To facilitate understanding of the specific principle of the cooperation between the drive assembly 21 and the swing assembly 22, a detailed description is given using Example 2 as an example.

[0067] (1) such as Figure 9 As shown, the pendulum 221 rotates clockwise to its first extreme position, which is defined as the initial position of the pendulum 221. The roller 2122 that mates with it is designated as the first roller, and the adjacent roller 2122 that rotates counterclockwise is designated as the second roller. At this time, the first roller and the first loading part 2211 are in a contact state without impact, and the second roller and the second loading part 2212 are spaced apart; while the swing 100 swings counterclockwise to its extreme position.

[0068] (2) The first roller rotates clockwise under the action of the driving member 212, and the first roller contacts and presses against the first loading part 2211; as Figure 10 As shown, the swing plate 221 begins to rotate counterclockwise under the action of the extrusion driving force, while the second roller and the second loading part 2212 gradually approach each other. When the swing plate 221 reaches the second limit position, as... Figure 11 As shown, the first roller disengages from the first loading part 2211, while the second roller and the second loading part 2212 are in a contact state without impact; and the swing 100 swings clockwise to its limit position.

[0069] (3) The second roller continues to rotate clockwise, and the second roller contacts and presses against the second loading part 2212, such as Figure 12 As shown, the swing plate 221 begins to rotate clockwise under the pressure. When the swing plate 221 swings back to the first limit position (i.e., the initial position), the second roller also enters the first loading part 2211 from the second loading part 2212, that is, the second roller is in the initial position, as shown. Figure 9 As shown, Swing 100 swings counterclockwise back to its original extreme position, waiting for the next driving action. Through this cyclical motion, the reciprocating swing test of Swing 100 can be achieved.

[0070] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A swing sway testing device, characterized in that, include: frame; A drive mechanism, comprising a drive component and a swing component, wherein the swing component is rotatably mounted on the frame; The drive assembly is mounted on the frame and drives the swing assembly to reciprocate around the mounting position via the drive end. as well as A connecting mechanism is provided, through which the swing assembly is connected to the swing to be tested, so that the swing to be tested swings synchronously with the swing assembly. The extreme positions of the swing component include a first extreme position and a second extreme position that are opposite in position; during testing, when the swing component swings towards the first extreme position, the driving end of the driving component maintains a distance from the swing component; when the swing component is at the first extreme position, the driving end of the driving component and the swing component are in a contact state without impact force; when the swing component swings back from the first extreme position to the second extreme position, the driving component loads the swing component through its driving end; The driving assembly includes a rotating device and a driving member. The rotating device is mounted on the frame, and the driving member is mounted on the output end of the rotating device, so that the driving member rotates in one direction under the drive of the rotating device. The swing assembly is rotatably mounted on the frame through its middle part, and a first loading part is provided in the middle of the side of the swing assembly near the driving member. During testing, the driving end of the driving member is adapted to contact and engage with the first loading part and load when the swing assembly is in the first extreme position, so that the driving member squeezes the first loading part through the driving end to drive the swing assembly to swing back.

2. The swing sway testing device as described in claim 1, characterized in that: The swing assembly has a first loading part with a groove structure in the middle of the side near the driving member, and the swing assembly has a second loading part on one side of the first loading part; during the swing assembly swinging from the second limit position to the first limit position, the driving end of the driving member contacts and engages with the second loading part and loads it, and when the swing assembly reaches the first limit position, the driving end of the driving member moves from the second loading part into the first loading part; The driving component is provided with a plurality of driving ends, which are arranged at equal intervals along the circumferential rotation direction of the driving component; the driving component always cooperates with the swing assembly through one of the driving ends; when one of the driving ends disengages from the swing assembly, the adjacent driving end contacts the swing assembly.

3. The swing sway testing device as described in claim 2, characterized in that: The swing assembly includes a swing plate, which is rotatably mounted on the frame via a central portion; the swing plate has a first loading portion symmetrically arranged on both sides of the central portion, and a second loading portion is arranged on both sides of the first loading portion; based on the detachable position adjustment of the swing plate, the first loading portion and the second loading portion at different positions cooperate with the driving end of the driving component.

4. The swing sway testing device as described in claim 2, characterized in that: The drive end of the drive member is equipped with a roller, so that the drive member forms a rolling engagement with the oscillating assembly through the roller.

5. The swing sway testing device as described in claim 1, characterized in that: The swing assembly has multiple spaced mounting positions along its length. Based on the cooperation and connection of different mounting positions with the connecting mechanism, the swing amplitude of the swing can be adjusted or used for swing testing of different models of swings.

6. The swing sway testing device as described in claim 5, characterized in that: The swing assembly includes a swing plate and a swing rod. The swing plate is rotatably mounted on the frame via its central portion and is used to cooperate with the drive end of the drive assembly. The swing rod is detachably mounted on the swing plate and is provided with multiple mounting positions for cooperating with the connecting mechanism.

7. The swing testing device as described in any one of claims 1-6, characterized in that: The frame is provided with an arc-shaped track, which is concentric with the rotation center of the swing assembly; the swing test equipment also includes a shock absorption mechanism, which includes two shock absorption components disposed at both ends of the arc-shaped track, so that the arc-shaped track constrains the deformation direction of the shock absorption components; the swing assembly is adapted to cooperate with the shock absorption components at its ends, so that during the swing of the swing assembly to the extreme position, the impact force of the swing assembly is absorbed by the elastic deformation of the shock absorption components.

8. The swing sway testing device as described in claim 1, characterized in that: The connecting mechanism includes a connecting rod and a clamping assembly. The clamping assembly clamps and fixes the rope to the swing. One end of the connecting rod is rotatably connected to the clamping assembly, and the other end of the connecting rod is rotatably connected to the swing assembly.

9. A method for testing the swing sway, using the swing sway testing equipment as described in any one of claims 1-8, characterized in that, Includes the following steps: S1 Swing Load Selection: Select appropriate counterweights and install them on the swing seat according to the specifications of the swing to be tested; S2 Swing Connection with Test Equipment: Connect the swing rope to one end of the connecting mechanism; and the connection point between the connecting mechanism and the rope is located between the suspension end of the rope and the seat plate; along the length of the rope, the distance from the connection point to the suspension end is less than the distance to the seat plate; S3 Swing Amplitude Adjustment: According to the swing amplitude required by the test plan, connect the other end of the connecting mechanism to different positions on the swing component to complete the preset adjustment of the swing amplitude; S4 Swing Test: The start-up drive component drives the swing component to swing back and forth around the installation position, which in turn drives the swing to swing synchronously through the connecting mechanism.

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