Connecting device and overload experiment equipment

Abstract

The utility model provides a connecting device and overload experiment equipment, the connecting device is connected between a rotating arm and a display device, and the connecting device comprises a fastening support fixedly connected with the display device; the first support assembly is detachably arranged between the rotating arm and the fastening support, and the fastening support is connected with the rotating arm in a position adjustable mode through the first support assembly; when the position of the first support assembly on the rotating arm is adjusted, the connecting device has a first horizontal test state enabling the long side edge of the display device to face the rotating center and a second horizontal test state enabling the short side edge of the display device to face the rotating center, and the long side edge is perpendicular to the short side edge. According to the technical scheme, the problem that operation is troublesome when an overload experiment is carried out on a display device in the prior art is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of overload test equipment, and in particular, to a connecting device and an overload test equipment. Background Technique

[0002] The display device installed on the flying equipment needs to be subjected to an overload test. When the display device is subjected to the overload test, the rotating arm is rotatably arranged on the vertical shaft, and the display device is installed at the rotating end of the rotating arm. When the rotating arm rotates, it drives the display device to rotate, so that the display device is subjected to a centrifugal overload force. Monitor the performance of the display device under the action of different centrifugal overload forces to detect the overload performance of the display device.

[0003] When the display device is subjected to the overload test, it is necessary to adjust the different relative positions of the display device on the rotating arm so that the measured overload performance of the display device is more accurate and reliable.

[0004] In the related art, there is no dedicated connecting device to connect the display device and the rotating arm. When installing the display device on the rotating arm, the operator needs to use a plurality of first connecting pieces to connect the display device and the rotating arm. When it is necessary to adjust the relative position of the display device on the rotating arm, it is necessary to remove a plurality of first connecting pieces, adjust the position of the display device, and then replace them with a plurality of second connecting pieces to connect the display device and the rotating arm. In this way, the operation of the display device during the overload test is relatively troublesome and the work efficiency is low. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a connecting device and an overload test equipment to solve the problem that the operation of the display device during the overload test in the related art is relatively troublesome.

[0006] To achieve the above object, according to one aspect of the utility model, a connecting device is provided, which is connected between a rotating arm and a display device. The connecting device includes: a fastening bracket fixedly connected to the display device; a first bracket assembly detachably arranged between the rotating arm and the fastening bracket, and the fastening bracket is connected to the rotating arm in a position-adjustable manner through the first bracket assembly; wherein, when adjusting the position of the first bracket assembly on the rotating arm, the connecting device has a first flat test state in which the long side of the display device faces the rotation center and a second flat test state in which the short side of the display device faces the rotation center, and the long side is perpendicular to the short side.

[0007] Furthermore, the connecting device further includes a second bracket assembly connected between the rotating arm and the display device, and the fastening bracket is detachably connected to the rotating arm through the first bracket assembly or the second bracket assembly; when the fastening bracket is connected to the rotating arm through the second bracket assembly, the connecting device further has an upright test state in which the display surface of the display device faces or deviates from the rotation center.

[0008] Further, the first bracket assembly includes a rectangular frame which can be placed flat at one end of the swing arm and located between the swing arm and the fastening bracket. The rectangular frame has a long frame side and a short frame side. The long frame side is correspondingly arranged with the long side of the display device, and the short frame side is correspondingly arranged with the short side of the display device. When the long frame side faces the rotation center, the connecting device is in the first flat placement test state. When the short frame side faces the rotation center, the connecting device is in the second flat placement test state.

[0009] Further, the first bracket assembly further includes a first reinforcing rod connected between two opposite long frame sides and a second reinforcing rod connected between two opposite short frame sides; and / or, the first bracket assembly further includes a support rod connected to the upper surface of the rectangular frame. The support rod is detachably connected to the fastening bracket, and the rectangular frame is detachably connected to the swing arm.

[0010] Further, the second bracket assembly includes a base and a brace arranged at an angle to the base. The base can be placed flat at one end of the swing arm. The first end of the base is connected to the first end of the fastening bracket, the second end of the base is connected to the first end of the brace, and the second end of the brace is connected to the second end of the fastening bracket.

[0011] Further, the base includes a first connecting beam capable of being connected to the first end of the fastening bracket, a second connecting beam capable of being connected to the first end of the brace, and a third connecting beam connected between the first connecting beam and the second connecting beam; and / or, the brace includes a plurality of spaced-apart brace rods and a connecting rod connected between two adjacent brace rods. Each brace rod is connected between the second end of the base and the second end of the fastening bracket. Every two adjacent brace rods are parallel to each other, and the connecting rod is connected to the brace rod at an angle.

[0012] Further, the fastening bracket includes a first side rod, a second side rod oppositely arranged to the first side rod, a third side rod connected between the first side rod and the second side rod, a first leg arranged on one side of the first side rod, and a second leg arranged on one side of the second side rod. The first leg and the second leg are both connected to the rear side of the display device. When the connecting device is in the first flat placement test state or the second flat placement test state, both the first side rod and the second side rod are connected to the first bracket assembly. When the connecting device is in the vertical test state, the first side rod is connected to the second bracket assembly.

[0013] Further, the fastening bracket further includes a first reinforcing beam and a second reinforcing beam. The first end of the first reinforcing beam is connected to the side of the first side rod away from the first leg, and the second end of the first reinforcing beam is connected to the side of the second side rod away from the second leg. The second end of the first reinforcing beam protrudes from the second side rod in a direction away from the first side rod. When the connecting device is in the vertical test state, the second end of the first reinforcing beam is connected to the second bracket assembly. The first reinforcing beams are multiple and arranged at intervals and in parallel. The second reinforcing beam is connected between two adjacent first reinforcing beams, and the second reinforcing beam is connected to the first reinforcing beam at an angle.

[0014] Further, the connecting device further includes a camera bracket connected to the third side rod. The camera bracket includes a vertical rod connected to the third side rod at an angle and a cross rod connected to the vertical rod at an angle. The cross rod is located on the front side of the display device, and a mounting plate is provided on the cross rod. The camera is adjustably provided on the mounting plate.

[0015] According to another aspect of the present invention, an overload test device is provided, including a vertical shaft, a rotating arm rotatably provided on the vertical shaft, and a connecting device provided on the rotating arm. The connecting device is the above-mentioned connecting device.

[0016] Further, a power cord fixing member is provided on the rotating arm, and a through hole passing through the rotation center is provided in the vertical shaft. Part of the power cord is fixedly connected to the power cord fixing member, and the other part of the power cord passes through the through hole and is connected to an external power supply; and / or, a power supply fixing member is provided on the fastening bracket, and the power supply is fixed to the fastening bracket through the power supply fixing member.

[0017] Applying the technical solution of the present invention, the connecting device is connected between the rotating arm and the display device. The connecting device includes a fastening bracket and a first bracket assembly. The fastening bracket is fixedly connected to the display device. The first bracket assembly is detachably provided between the rotating arm and the fastening bracket, and the fastening bracket is connected to the rotating arm through the first bracket assembly in a position-adjustable manner. In this way, the setting of the fastening bracket can improve the structural strength of the display device, reduce the possibility of structural damage of the display device, strengthen the supporting force for the display device, and reduce the influence of the insufficient structural strength of the display device on the accuracy of the detection of the overload performance of the display device. Among them, when adjusting the position of the first bracket assembly on the rotating arm, the connecting device has a first flat test state in which the long side of the display device faces the rotation center and a second flat test state in which the short side of the display device faces the rotation center, and the long side is perpendicular to the short side. In this way, by adjusting the position of the first bracket assembly on the rotating arm, the different relative positions of the display device on the rotating arm can be adjusted, the operation is simple, and the work efficiency is improved. It avoids the problem in the related art that when it is necessary to adjust the relative position of the display device on the rotating arm, different connecting parts need to be replaced. Therefore, the technical solution of the present application effectively solves the problem that the operation of the display device during the overload test in the related art is relatively troublesome. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 A three-dimensional structural schematic diagram of a connecting device of an overload test device according to an embodiment of the present utility model when in a first flat test state is shown;

[0020] Figure 2 It shows Figure 1 A three-dimensional structural schematic diagram of a connecting device of an overload test device when in a second flat test state;

[0021] Figure 3 It shows Figure 1 A three-dimensional structural schematic diagram of a connecting device of an overload test device when in a vertical test state;

[0022] Figure 4 It shows Figure 1 A three-dimensional structural schematic diagram of a first support assembly of a connecting device of an overload test device;

[0023] Figure 5 It shows Figure 1 A three-dimensional structural schematic diagram of a second support assembly of a connecting device of an overload test device;

[0024] Figure 6 It shows Figure 1 A three-dimensional structural schematic diagram of a fastening bracket of a connecting device of an overload test device.

[0025] Among them, the above-mentioned drawings include the following reference numerals:

[0026] 10. First support assembly; 111. Long frame side; 112. Short frame side; 12. First reinforcing bar; 13. Second reinforcing bar; 14. Support rod;

[0027] 20. Second support assembly; 21. Base; 211. First connecting beam; 212. Second connecting beam; 213. Third connecting beam; 22. Diagonal brace; 221. Diagonal brace rod; 222. Link rod;

[0028] 30. Fastening bracket; 31. First side rod; 32. Second side rod; 33. Third side rod; 34. First leg; 35. Second leg; 36. First reinforcing beam; 37. Second reinforcing beam;

[0029] 40. Camera bracket; 41. Vertical rod; 42. Cross bar; 43. Mounting plate;

[0030] 51. Vertical shaft; 52. Rotary arm;

[0031] 61. Display device; 62. Camera. Detailed implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] As Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, applying the technical solution of this embodiment, the connecting device is connected between the rotary arm 52 and the display device 61. The connecting device includes a fastening bracket 30 and a first bracket assembly 10. The fastening bracket 30 is fixedly connected to the display device 61. The first bracket assembly 10 is detachably arranged between the rotary arm 52 and the fastening bracket 30, and the fastening bracket 30 is position-adjustably connected to the rotary arm 52 through the first bracket assembly 10. Among them, when adjusting the position of the first bracket assembly 10 on the rotary arm 52, the connecting device has a first flat test state in which the long side of the display device 61 faces the rotation center and a second flat test state in which the short side of the display device 61 faces the rotation center, and the long side is perpendicular to the short side.

[0034] In this way, the setting of the fastening bracket 30 can improve the structural strength of the display device 61, reduce the possibility of structural damage to the display device 61, strengthen the supporting force for the display device 61, and reduce the influence of the insufficient structural strength of the display device 61 on the accuracy of detecting the overload performance of the display device 61. Among them, when adjusting the position of the first bracket assembly 10 on the rotary arm 52, the connecting device has a first flat test state in which the long side of the display device 61 faces the rotation center and a second flat test state in which the short side of the display device 61 faces the rotation center, and the long side is perpendicular to the short side. In this way, by adjusting the position of the first bracket assembly 10 on the rotary arm 52, the different relative positions of the display device 61 on the rotary arm 52 can be adjusted, the operation is simple, and the work efficiency is improved. It avoids the problem in the related art that when it is necessary to adjust the relative position of the display device on the rotary arm, different connecting parts need to be replaced. Therefore, the technical solution of this embodiment effectively solves the problem that the operation is relatively troublesome when the display device in the related art conducts an overload experiment.

[0035] In this embodiment, the connection device is simple to switch between the first flat test state and the second flat test state. After removing the first bracket assembly 10 from the rotating arm 52, the first bracket assembly 10, the fastening bracket 30, and the display device 61 remain fixedly connected, and the relative position between the first bracket assembly 10 and the rotating arm 52 can be adjusted. The conversion of the relative position of the display device 61 on the rotating arm 52 is simple and fast.

[0036] As Figures 1 to 6 shown, the connection device further includes a second bracket assembly 20 connected between the rotating arm 52 and the display device 61. The fastening bracket 30 is detachably connected to the rotating arm 52 through the first bracket assembly 10 or the second bracket assembly 20. When the fastening bracket 30 is connected to the rotating arm 52 through the second bracket assembly 20, the connection device further has an upright test state in which the display surface of the display device 61 faces or deviates from the rotation center. In this way, when the display device 61 needs to be placed upright on the rotating arm 52 for an overload experiment, the first bracket assembly 10 between the rotating arm 52 and the fastening bracket 30 can be replaced with the second bracket assembly 20 so that the display device 61 can be supported and fixed on the rotating arm 52 through the second bracket assembly 20.

[0037] In this embodiment, the upright test state of the connection device includes a first upright test state in which the display surface of the display device 61 faces the rotation center and a second upright test state in which the display surface of the display device 61 deviates from the rotation center. When switching between the first upright test state and the second upright test state of the connection device, the connection between the display device 61 and the fastening bracket 30 and the connection between the fastening bracket 30 and the second bracket assembly 20 are maintained, and the position of the second bracket assembly 20 on the rotating arm 52 can be adjusted, which is simple and fast to operate and improves work efficiency.

[0038] As Figure 1 、 Figure 2 、 Figure 4 and Figure 6As shown, the first bracket assembly 10 includes a rectangular frame that can be placed flat at one end of the swing arm 52 and is located between the swing arm 52 and the fastening bracket 30. The structure of the rectangular frame is simple and easy to process, and it makes the support of the first bracket assembly 10 for the fastening bracket 30 and the display device 61 more reliable. The rectangular frame has a long frame side 111 and a short frame side 112. The long frame side 111 is correspondingly arranged with the long side of the display device 61, and the short frame side 112 is correspondingly arranged with the short side of the display device 61. This makes the support of the rectangular frame for the display device 61 more firm and reliable. When the long frame side 111 faces the rotation center, the connecting device is in the first flat placement test state; when the short frame side 112 faces the rotation center, the connecting device is in the second flat placement test state. In this way, the relative position of the display device 61 on the swing arm 52 can be adjusted by adjusting the position of the first bracket assembly 10 on the swing arm 52, which is simple to operate and improves work efficiency.

[0039] As Figure 1 , Figure 2 , Figure 4 and Figure 6 shown, the first bracket assembly 10 further includes a first reinforcing bar 12 connected between two opposite long frame sides 111 and a second reinforcing bar 13 connected between two opposite short frame sides 112. The settings of the first reinforcing bar 12 and the second reinforcing bar 13 improve the structural strength of the first bracket assembly 10, so that the support of the first bracket assembly 10 for the fastening bracket 30 and the display device 61 is more firm and reliable. The first bracket assembly 10 further includes a support rod 14 connected to the upper surface of the rectangular frame. The support rod 14 is detachably connected to the fastening bracket 30, and the rectangular frame is detachably connected to the swing arm 52. The setting of the support rod 14 facilitates the connection and disassembly with the fastening bracket 30, and the operation is simple.

[0040] In this embodiment, the first reinforcing bar 12 and the second reinforcing bar 13 are cross-connected. The first reinforcing bar 12 is provided in a plurality of spaced-apart manner. The second reinforcing bar 13 includes a first section of the reinforcing bar connected between the short frame side 112 and the first reinforcing bar 12 and a second section of the reinforcing bar connected between two adjacent first reinforcing bars 12.

[0041] In other embodiments, the first bracket assembly 10 further includes a first reinforcing bar 12 connected between two opposite long frame sides 111 and a second reinforcing bar 13 connected between two opposite short frame sides 112. Or, the first bracket assembly 10 further includes a support rod 14 connected to the upper surface of the rectangular frame. The support rod 14 is detachably connected to the fastening bracket 30, and the rectangular frame is detachably connected to the swing arm 52.

[0042] As Figures 1 to 6As shown, the second bracket assembly 20 includes a base 21 and a diagonal brace 22 arranged at an angle to the base 21. The base 21 can be placed flat on one end of the rotating arm 52, the first end of the base 21 is connected to the first end of the fastening bracket 30, and the second end of the base 21 is connected to the first end of the diagonal brace 22. The second end of the diagonal brace 22 is connected to the second end of the fastening bracket 30. This simplifies the structure of the second bracket assembly 20, reduces the weight of the second bracket assembly 20, and facilitates the support of the fastening bracket 30 and the display device 61. The base 21, the diagonal brace 22 and the fastening bracket 30 form a triangular structure to improve the stability of the support for the display device 61, so that the display surface of the display device 61 can face the rotation center when the rotating arm 52 rotates, reducing the shaking of the display device 61 when rotating.

[0043] like Figures 1 to 6 As shown, the base 21 includes a first connecting beam 211 that can be connected to the first end of the fastening bracket 30, a second connecting beam 212 that can be connected to the first end of the diagonal brace 22, and a third connecting beam 213 connected between the first connecting beam 211 and the second connecting beam 212. In this way, the structure of the base 21 is simple and reliable, and the weight of the base 21 is reduced. The diagonal brace 22 includes a plurality of diagonal brace rods 221 arranged at intervals and a connecting rod 222 connected between two adjacent diagonal brace rods 221, and each diagonal brace rod 221 is connected between the second end of the base 21 and the second end of the fastening bracket 30. Every two adjacent diagonal brace rods 221 are arranged in parallel, and the connecting rod 222 is connected to the diagonal brace rods 221 at an angle. The arrangement of the diagonal brace rods 221 can connect the base 21 to the fastening bracket 30. The provision of the connecting rod 222 increases the structural strength of the diagonal support rod 221 , reduces the shaking of the diagonal support rod 221 when the display device 61 is subjected to an overload test, and further improves the accuracy of the detection of the overload performance of the display device 61 .

[0044] In this embodiment, there are two diagonal braces 221. The length of the first connecting beam 211 is greater than the length of the second connecting beam 212. There are multiple third connecting beams 213 arranged at intervals, and a fourth connecting beam is connected between each two adjacent third connecting beams 213 to further improve the structural strength of the base 21. In other embodiments, there are three, four, five or more diagonal braces 221.

[0045] In other embodiments, the base 21 includes a first connecting beam 211 capable of connecting to the first end of the fastening bracket 30, a second connecting beam 212 capable of connecting to the first end of the diagonal brace 22, and a third connecting beam 213 connected between the first connecting beam 211 and the second connecting beam 212. Alternatively, the diagonal brace 22 includes a plurality of diagonal brace rods 221 arranged at intervals and connecting rods 222 connected between two adjacent diagonal brace rods 221. Each diagonal brace rod 221 is connected between the second end of the base 21 and the second end of the fastening bracket 30. Every two adjacent diagonal brace rods 221 are arranged in parallel, and the connecting rod 222 is connected to the diagonal brace rod 221 at an angle.

[0046] As Figure 1 and Figure 6 shown, the fastening bracket 30 includes a first side rod 31, a second side rod 32 disposed opposite to the first side rod 31, a third side rod 33 connected between the first side rod 31 and the second side rod 32, a first leg 34 disposed on one side of the first side rod 31, and a second leg 35 disposed on one side of the second side rod 32. The first leg 34 and the second leg 35 are both connected to the rear side of the display device 61. The arrangement of the first side rod 31, the second side rod 32, and the third side rod 33 improves the structural stability of the fastening bracket 30. The arrangement of the first leg 34 and the second leg 35 facilitates the connection between the fastening bracket 30 and the display device 61. When the connecting device is in the first flat test state or the second flat test state, both the first side rod 31 and the second side rod 32 are connected to the first bracket assembly 10. When the connecting device is in the vertical test state, the first side rod 31 is connected to the second bracket assembly 20. In this way, different connection holes can be set according to different connection methods to facilitate the connection between the fastening bracket 30 and the first bracket assembly 10 or the second bracket assembly 20.

[0047] As Figure 1 and Figure 6As shown, the fastening bracket 30 further includes a first reinforcing beam 36 and a second reinforcing beam 37. The first end of the first reinforcing beam 36 is connected to the side of the first side rod 31 away from the first leg 34, and the second end of the first reinforcing beam 36 is connected to the side of the second side rod 32 away from the second leg 35. This facilitates the connection of the first reinforcing beam 36 with the first side rod 31 and the second side rod 32, facilitating the processing of the fastening bracket 30, and facilitating the connection or disassembly operation between the first reinforcing beam 36 and the second bracket assembly 20. The second end of the first reinforcing beam 36 protrudes from the second side rod 32 in a direction away from the first side rod 31. When the connecting device is in the vertical test state, the second end of the first reinforcing beam 36 is connected to the second bracket assembly 20, making the connection and disassembly between the fastening bracket 30 and the second bracket assembly 20 more convenient. The first reinforcing beams 36 are multiple and arranged at intervals and in parallel. The second reinforcing beam 37 is connected between two adjacent first reinforcing beams 36, and the second reinforcing beam 37 is connected to the first reinforcing beam 36 at an angle. The setting of the second reinforcing beam 37 can improve the structural strength of the fastening bracket 30, reduce the shaking of the first reinforcing beam 36 during the overload experiment of the display device 61, and further improve the accuracy of the detection of the overload performance of the display device 61.

[0048] In this embodiment, there are two first reinforcing beams 36. A connection block for cooperating with the second bracket assembly 20 is provided on the second end of the first reinforcing beam 36. When the connecting device is in the vertical test state, the first connecting beam 211 of the second bracket assembly 20 is connected to the connection block, and the diagonal brace 221 is connected to the first side rod 31. The first side rod 31, the second side rod 32, and the third side rod 33 are all one. The third side rod 33 is connected to the first end of the first side rod 31 and the first end of the second side rod 32. An opening is formed between the second end of the first side rod 31 and the second end of the second side rod 32 to facilitate the weight reduction setting of the fastening bracket 30.

[0049] As Figures 1 to 6 shown, the connecting device further includes a camera bracket 40 connected to the third side rod 33. The camera bracket 40 includes a vertical rod 41 connected to the third side rod 33 at an angle and a cross bar 42 connected to the vertical rod 41 at an angle. The cross bar 42 is located on the front side of the display device 61, and a mounting plate 43 is provided on the cross bar 42. The camera 62 is adjustably arranged on the mounting plate 43. The setting of the camera bracket 40 facilitates the setting of the camera 62 on the front side of the display surface of the display device 61 to record the display state of the display device 61 during the overload experiment. The structure of the camera bracket 40 is simple, facilitating processing, and can reliably support the camera 62. The setting of the mounting plate 43 enables the position of the camera 62 on the front side of the display surface to be adjustable, so that the camera 62 can better capture the display situation of the entire display surface.

[0050] In this embodiment, a perforation is provided on the camera 62, and an arc-shaped hole is provided on the mounting plate 43. The screw rod passes through the perforation and is adjustably disposed in the arc-shaped hole. After the camera 62 is adjusted to a proper position, a nut is threadedly engaged with the screw rod to fix the camera 62 at the proper position. A protective cover for the camera 62 is further provided outside the camera 62.

[0051] This application also provides an overload test device, as Figures 1 to 3 shown. The overload test device includes a vertical shaft 51, a rotating arm 52 rotatably disposed on the vertical shaft 51, and a connecting device disposed on the rotating arm 52. The connecting device is the above-mentioned connecting device. Since the above-mentioned connecting device can solve the problem that the operation is relatively troublesome when the display device in the related art conducts an overload test, the overload test device having the connecting device can solve the same technical problem.

[0052] As Figures 1 to 3 shown, a power cord fixing member is provided on the rotating arm 52, and a through hole passing through the center of rotation is provided in the vertical shaft 51. Part of the power cord is fixedly connected to the power cord fixing member, and the other part of the power cord passes through the through hole and is connected to an external power supply. In this way, part of the power cord can be fixed on the rotating arm 52 to reduce the interference of the power cord when the rotating arm 52 rotates. The other part of the power cord passes through the through hole, reducing the possibility of the power cord winding around the vertical shaft 51. Moreover, through the above settings, the display device 61 can be powered by the power cord when conducting an overload test. A power supply fixing member is provided on the fastening bracket 30, and the power supply is fixed on the fastening bracket 30 through the power supply fixing member. The setting of the power supply fixing member enables the power supply to be fixed more reliably, so that the power supply can rotate together with the fastening bracket 30, the display device 61, and the rotating arm 52.

[0053] In this embodiment, the power supply fixing member includes a fixing bottom plate and a cover plate, and the power supply is fixed between the fixing bottom plate and the cover plate. The power supply can supply power to the camera 62.

[0054] In other embodiments, a power cord fixing member is provided on the rotating arm 52, a through hole passing through the center of rotation is provided in the vertical shaft 51, part of the power cord is fixedly connected to the power cord fixing member, and the other part of the power cord passes through the through hole and is connected to an external power supply. Alternatively, a power supply fixing member is provided on the fastening bracket 30, and the power supply is fixed on the fastening bracket 30 through the power supply fixing member. The power supply is powered by the slip ring of the centrifuge.

[0055] The inventor found that the connecting device in the related art cannot test a 55-inch display device. The connecting device in the related art is only applicable to testing small specimens, and it is prone to instability failure when testing large-size and large-mass objects, resulting in safety accidents. Moreover, when an overload experiment is carried out on the display device, power supply needs to be provided to the display device. However, due to the large weight of the power supply, the connecting device in the related art does not reinforce the power supply. During the rotation of the rotating arm, the power supply is subjected to centrifugal overload force, which is likely to have a negative impact on the reliability of the power supply, easily cause structural damage to the power supply, and also easily lead to unstable rotation of the rotating arm. In addition, due to the large volume of the display device, the connecting device in the related art cannot place the display device in the center of the rotating arm, which easily causes the distance between the lamp beads on the display device and the rotation center to be inconsistent with the preset distance, resulting in the phenomenon that the acceleration residual of the lamp beads exceeds the standard when the display device conducts an overload experiment.

[0056] In this embodiment, the vertical shaft 51 drives the rotating arm 52 to rotate, so that one end of the rotating arm 52 away from the vertical shaft 51 has a centripetal acceleration, successively simulating the centripetal acceleration overload situation borne by the display device 61 when it is arranged on the flying device. Applying the technical solution of this embodiment, through the cooperation of the fastening bracket 30 and the first bracket assembly 10 or the cooperation of the fastening bracket 30 and the second bracket assembly 20, when the connecting device is in the first horizontal test state, the second horizontal test state or the vertical test state, the distance between the lamp beads on the display surface of the display device 61 and the rotation center can be consistent with the preset distance. Thus, when the rotation parameters input into the centrifuge control software are the same, the phenomenon that the acceleration residual of the lamp beads exceeds the standard is reduced.

[0057] In this embodiment, a video signal is remotely sent to the display device 61 through a telecommunication device, and the camera 62 is turned on. After the picture on the display surface is displayed normally and the monitoring picture of the camera 62 is normal, the centrifuge parameters are set according to the experimental test outline, and the test time is set to complete the overload experiment of the display device 61 in a certain direction. After the structure in this embodiment is installed, a reasonable electrical layout can be carried out, and a quick-insert electrical interface is configured. After the layout is completed, electricity and signals can be connected through simple operations, meeting the requirements of rapid overload testing.

[0058] During the design process of the connecting device in this embodiment, multiple mechanical numerical simulations were carried out. The key positions were strengthened and the overall weight was reduced. So that when the display device 61 generates different accelerations during the rotation of the rotating arm 52, it can be firmly fixed at the rotating end of the rotating arm 52 and will not undergo instability failure. At the same time, the stable fixation of the power supply of the display device 61 during the overload experiment was taken into account. After the display device 61 is fixed, the connecting device can ensure that the display device 61 is located at the center position of the rotating end of the rotating arm 52, so that the lamp beads of the display device 61 are symmetrically distributed with the rotation center as the center, and the acceleration residual values of the lamp beads at each test point are within the standard range.

[0059] In this embodiment, by using traditional materials such as cold-rolled steel pipes and cold-rolled plates, and through processing techniques such as riveting and welding, a connecting device that can meet the requirements of the overload experiment of the display device 61 is redesigned, thereby solving the problem that the display device in the related technology cannot be tightly assembled.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0061] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it should not be understood as a limitation on the protection scope of the present invention.

[0062] The above description is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connecting device is connected between a swing arm (52) and a display device (61), characterized in that, The connection device includes: A fastening bracket (30), fixedly connected to the display device (61); A first bracket assembly (10), detachably disposed between the swing arm (52) and the fastening bracket (30), and the fastening bracket (30) is connected to the swing arm (52) in a position-adjustable manner through the first bracket assembly (10); Wherein, when adjusting the position of the first bracket assembly (10) on the swing arm (52), the connection device has a first flat test state in which the long side of the display device (61) faces the rotation center and a second flat test state in which the short side of the display device (61) faces the rotation center, and the long side is perpendicular to the short side.

2. The connecting device according to claim 1, wherein The connection device further includes a second bracket assembly (20) connected between the swing arm (52) and the display device (61), and the fastening bracket (30) is detachably connected to the swing arm (52) through the first bracket assembly (10) or the second bracket assembly (20); when the fastening bracket (30) is connected to the swing arm (52) through the second bracket assembly (20), the connection device further has an upright test state in which the display surface of the display device (61) faces or faces away from the rotation center.

3. The connection device according to claim 1, wherein The first bracket assembly (10) includes a rectangular frame, the rectangular frame can be placed flat at one end of the swing arm (52) and is located between the swing arm (52) and the fastening bracket (30), the rectangular frame has a long frame side (111) and a short frame side (112), the long frame side (111) is correspondingly arranged with the long side of the display device (61), and the short frame side (112) is correspondingly arranged with the short side of the display device (61); When the long frame side (111) faces the rotation center, the connection device is in the first flat test state; when the short frame side (112) faces the rotation center, the connection device is in the second flat test state.

4. The connection device according to claim 3, wherein The first bracket assembly (10) further includes a first reinforcing rod (12) connected between two opposite long frame sides (111) and a second reinforcing rod (13) connected between two opposite short frame sides (112); and / or The first bracket assembly (10) further includes a support rod (14) connected to the upper surface of the rectangular frame, the support rod (14) is detachably connected to the fastening bracket (30), and the rectangular frame is detachably connected to the swing arm (52).

5. The connecting device according to claim 2, characterized in that, The second support assembly (20) includes a base (21) and a brace (22) disposed at an angle to the base (21). The base (21) can be placed flat on one end of the swing arm (52). The first end of the base (21) is connected to the first end of the fastening bracket (30). The second end of the base (21) is connected to the first end of the brace (22). The second end of the brace (22) is connected to the second end of the fastening bracket (30).

6. The connecting device according to claim 5, wherein the base (21) includes a first connecting beam (211) capable of being connected to the first end of the fastening bracket (30), a second connecting beam (212) capable of being connected to the first end of the brace (22), and a third connecting beam (213) connected between the first connecting beam (211) and the second connecting beam (212); and / or the brace (22) includes a plurality of brace rods (221) arranged at intervals and connecting rods (222) connected between two adjacent brace rods (221). Each brace rod (221) is connected between the second end of the base (21) and the second end of the fastening bracket (30). Every two adjacent brace rods (221) are arranged in parallel. The connecting rod (222) is connected to the brace rod (221) at an angle.

7. The connecting device according to claim 2, characterized in that, The fastening bracket (30) includes a first side rod (31), a second side rod (32) disposed opposite to the first side rod (31), a third side rod (33) connected between the first side rod (31) and the second side rod (32), a first leg (34) disposed on one side of the first side rod (31), and a second leg (35) disposed on one side of the second side rod (32). The first leg (34) and the second leg (35) are both connected to the rear side of the display device (61). When the connecting device is in the first flat test state or the second flat test state, both the first side rod (31) and the second side rod (32) are connected to the first support assembly (10). When the connecting device is in the vertical test state, the first side rod (31) is connected to the second support assembly (20).

8. The connecting device according to claim 7, wherein the fastening bracket (30) further includes a first reinforcing beam (36) and a second reinforcing beam (37). The first end of the first reinforcing beam (36) is connected to the side of the first side rod (31) facing away from the first leg (34). The second end of the first reinforcing beam (36) is connected to the side of the second side rod (32) facing away from the second leg (35). The second end of the first reinforcing beam (36) protrudes from the second side rod (32) in a direction away from the first side rod (31). When the connecting device is in the vertical test state, the second end of the first reinforcing beam (36) is connected to the second support assembly (20). The first reinforcing beams (36) are multiple and arranged at intervals and in parallel. The second reinforcing beam (37) is connected between two adjacent first reinforcing beams (36), and the second reinforcing beam (37) is connected to the first reinforcing beam (36) at an angle.

9. The connecting device according to claim 8, characterized in that, The connecting device further includes a camera bracket (40) connected to the third side rod (33). The camera bracket (40) includes a vertical rod (41) connected to the third side rod (33) at an angle and a cross bar (42) connected to the vertical rod (41) at an angle. The cross bar (42) is located on the front side of the display device (61), and a mounting plate (43) is provided on the cross bar (42). The camera (62) is adjustably arranged on the mounting plate (43).

10. An overload test device, comprising a vertical shaft (51), a rotating arm (52) rotatably arranged on the vertical shaft (51), and a connecting device arranged on the rotating arm (52), characterized in that, The connecting device is the connecting device according to any one of claims 1 to 9.

11. The overload test equipment according to claim 10, wherein A power cord fixing member is provided on the swing arm (52). A through hole passing through the rotation center is provided in the vertical shaft (51). Part of the power cord is fixedly connected to the power cord fixing member, and the other part of the power cord passes through the through hole and is connected to an external power supply; and / or A power supply fixing member is provided on the fastening bracket (30), and the power supply is fixed to the fastening bracket (30) through the power supply fixing member.

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