Wheelchair impact resistance detection system and detection method

Abstract

The invention relates to the field of wheelchair performance detection, in particular to a wheelchair impact resistance detection system and method.The wheelchair impact resistance detection system comprises a bearing plate, a mounting plate is fixedly arranged on the bearing plate, a limiting mechanism is arranged on the mounting plate, a [-shaped mounting frame is arranged at the rear end of the limiting mechanism, and a first detection mechanism is arranged between the [-shaped mounting frame and the mounting plate; according to the wheelchair detection device, multiple detection methods are set, so that the wheelchair does not need to be repeatedly disassembled and assembled in the detection work, the wheelchair detection work efficiency is improved, the detection work continuity is guaranteed, meanwhile, the wheelchair detection efficiency is improved, and the wheelchair detection device can be used for detecting the wheelchair according to the wheelchair detection mode. The lifting height of the wheelchair is adjusted, the lengths of the horizontal sections of the four L-shaped auxiliary plates are different, and the synchronous belt wheels are driven by the toothed belts to rotate, so that the four L-shaped auxiliary plates extend out to form a step shape, the real falling and rolling environment of the wheelchair is simulated, and the persuasion of the impact resistance detection result of the wheelchair is improved.

Description

Technical Field

[0001] The present invention relates to the field of wheelchair performance detection, and particularly relates to a wheelchair impact resistance detection system and a detection method. Background Art

[0002] A wheelchair is a device that provides mobility assistance for people with limited mobility. It can help those who cannot walk independently due to diseases, injuries, or other physical limitations to move more freely. Therefore, wheelchairs are designed in various ways to meet the needs of different users.

[0003] Common wheelchairs usually consist of a support frame part, a driving part, and a seat cushion, etc. To ensure the safety of users, it is usually necessary to ensure that the wheelchair can withstand a certain external force impact during use without being damaged or deformed. Therefore, it is very necessary to detect the impact resistance performance of the wheelchair.

[0004] Currently, the detection of wheelchair impact resistance performance usually adopts two detection methods: static load testing and dynamic impact testing. The above two detection methods require different detection devices to simulate the impact resistance performance during normal use of the wheelchair by using a pressure-bearing heavy object or simulating an impact.

[0005] Although the above two methods are relatively common existing detection methods, there are still certain drawbacks. There will be a situation where the wheelchair falls from a height during use, and the existing detection methods still have limitations and cannot simulate the extreme situation where the wheelchair falls from a step or a step with a relatively large height difference, resulting in certain limitations in the detection results. Summary of the Invention

[0006] In view of the above problems, the embodiments of the present application provide a wheelchair impact resistance detection system to solve the problems existing in the detection process of the wheelchair.

[0007] To achieve the above object, the embodiments of the present application provide the following technical solution: A wheelchair impact resistance detection system includes a supporting plate. A slope for assisting the wheelchair to slide is provided on the front side wall of the supporting plate in the front-rear direction. An installation plate is fixedly arranged on the upper end of the supporting plate in the vertical direction. A limiting mechanism for limiting the wheelchair is arranged on the installation plate, and the wheelchair is placed on the upper end surface of the supporting plate through the limiting mechanism.

[0008] The limiting mechanism includes two support plates fixedly arranged on the front side wall of the installation plate and distributed in the up-down direction. A clamping part for clamping and limiting the wheelchair is commonly arranged between the two support plates. The rear end of the clamping part is provided with a U-shaped mounting frame with an opening facing forward and fixed on the upper end surface of the supporting plate.

[0009] A detection mechanism 1 for free-fall detection of the wheelchair is provided between the U-shaped mounting bracket and the mounting plate. The detection mechanism 1 includes a driving part arranged inside the mounting plate and used to drive the wheelchair to move upward repeatedly, and an auxiliary part for assisting wheelchair detection is arranged at the rear end of the driving part.

[0010] A strip-shaped bearing plate with a strip-shaped sliding groove opened on the lower end face is fixedly arranged on the upper end face of the U-shaped mounting bracket, and a detection mechanism 2 for pendulum impact test of the wheelchair is arranged inside the strip-shaped sliding groove.

[0011] Preferably, a sliding groove is opened on the front side wall of the mounting plate in the up-and-down direction, and two strip-shaped grooves penetrating through the mounting plate are opened on the rear side wall of the mounting plate. The width of the middle strip-shaped groove is wider than that of the strip-shaped groove on the left side. The upper end of the strip-shaped groove on the left side is opened, and two limiting grooves distributed in the up-and-down direction are opened on the inner walls on both the left and right sides. A plurality of strip-shaped through grooves extending in the left-and-right direction are opened on the inner wall of the sliding groove from top to bottom, and the plurality of strip-shaped through grooves are communicated with the middle strip-shaped groove. Adjusting plates are fixedly arranged symmetrically up and down at the upper right position of the rear side wall of the mounting plate. The two adjusting plates are respectively on the upper and lower sides of the uppermost strip-shaped through groove, and chamfers are arranged on the sides of the two adjusting plates away from each other.

[0012] Preferably, the auxiliary part includes an adjusting group arranged above the corresponding strip-shaped through groove. Each adjusting group includes a second threaded rod rotatably arranged on the rear side wall of the mounting plate and a second sliding rod fixedly arranged on the rear side wall of the mounting plate. An L-shaped auxiliary plate with its rear side wall fixedly connected to the inner wall of the U-shaped mounting bracket through a spring telescopic rod is arranged on the outer walls of the second threaded rod and the second sliding rod. The L-shaped auxiliary plate is in threaded connection with the second threaded rod, and a synchronous pulley is fixedly arranged on the rear side wall of the second threaded rod. The plurality of synchronous pulleys are driven and connected through a toothed belt. The auxiliary part further includes a driving group for driving the L-shaped auxiliary plate to move synchronously.

[0013] Preferably, the driving group includes an adjusting gear rotatably arranged on the rear side wall of the mounting plate and fixedly connected to the uppermost second threaded rod. Two racks slide in the up-and-down direction inside the strip-shaped groove on the left side and on the right side of the adjusting gear. The length of the upper rack is longer than that of the lower rack. The left and right side walls of the upper rack are arranged in two lower limiting grooves through spring telescopic blocks with chamfers opened at the upper and lower ends. The upper rack is always meshed with the adjusting gear. The connecting section of the lower rack is fixedly connected to the support disc. A T-shaped mating groove is opened on the lower end face of the upper rack. Chamfers are opened at the two corners of the vertical section of the T-shaped mating groove. An electromagnet is arranged at the upper end of the lower rack, and two T-shaped mating blocks with chamfers opened at the telescopic sections are fixedly arranged on the end face of the lower rack corresponding to the T-shaped mating groove.

[0014] Preferably, sliding grooves are formed at the rear positions of the upper end surfaces of the two support plates. A blocking plate extending in the left-right direction is fixedly arranged on the upper end surface of the lower support plate. An electric push rod II is fixedly arranged on the upper end surface of the lower support plate through a mounting table. The front end of the telescopic section of the electric push rod II is provided with an I-shaped frame connected to the wheelchair support frame.

[0015] Preferably, the clamping part includes four clamping groups, which are respectively arranged on the two support plates and are symmetric in the left-right direction. Each clamping group includes a scissor-type telescopic frame. The hinge point of the scissor-type telescopic frame near the front end is rotatably connected to the upper end surface of the corresponding support plate. A clamping block for clamping and limiting the wheelchair support frame is fixedly arranged at the front end of the scissor-type telescopic frame. Flexible telescopic clamping blocks are fixedly arranged on the side walls of the two clamping blocks close to each other. The clamping part further includes a C-shaped connecting frame. There are two C-shaped connecting frames, which are arranged between the two clamping groups on the corresponding support plates in a vertically distributed manner. The two vertical sections of the C-shaped connecting frame are respectively fixedly connected to the hinge points at the rear ends of the corresponding two scissor-type telescopic frames. The two C-shaped connecting frames are fixedly connected through a strip-shaped plate sliding inside the sliding groove. The rear end of the fixed section of the electric push rod II slides through the strip-shaped plate. And an electric push rod I is fixedly connected to the front end surface of the upper C-shaped connecting frame. The electric push rod I is fixedly arranged on the upper end surface of the upper support plate through a mounting seat.

[0016] Preferably, the driving part includes a support disc slidably arranged inside the sliding groove. The support disc is fixedly connected to the lower rack. Two arc-shaped sliders II with arc sections being electromagnets are slidably arranged above the support disc inside the sliding groove. A threaded rod I and a sliding rod I extending in the vertical direction are arranged in the sliding groove in the left-right direction. The threaded rod I and the sliding rod I respectively penetrate through the corresponding arc-shaped sliders II, and the threaded rod I is threadedly connected to the corresponding arc-shaped slider II. The support disc is divided into a connecting section with a larger diameter magnetically fixed to the arc-shaped slider II and a mounting section with a smaller diameter fixedly connected to the two support plates. The mounting section is rotatably arranged inside the connecting section through a bearing. A circular rod penetrating through the middle strip-shaped groove is fixedly arranged on the rear side wall of the connecting section of the support disc. An adjusting square plate is fixedly arranged on the outer wall of the circular rod.

[0017] Preferably, a first motor with an output shaft facing downwards and rotatably connected to the mounting plate is fixedly arranged on the lower end surface of the strip-shaped bearing plate and directly above the mounting plate through a motor seat. A driving gear is fixed on the outer wall of the output shaft of the first motor. A driven gear that is always meshed with the driving gear is rotatably arranged on the lower end surface of the strip-shaped bearing plate through a rotating shaft. A connecting column fixedly connected to the threaded rod I is fixedly connected to the lower end surface of the driven gear.

[0018] Preferably, the second detection mechanism comprises a sliding block which is slidably arranged inside the strip slide groove and has electromagnets at both ends. The lower end surface of the sliding block is fixed with a rectangular plate through a cylinder. The lower end surface of the rectangular plate is provided with two mounting grooves. The two mounting grooves are provided in a left-right symmetrical manner and a mounting column is rotatably arranged inside the mounting groove. The lower end of the mounting column is fixed with a swing ball with an end face mounted pull ring through a rope.

[0019] In addition, the present invention also provides a method for detecting the impact resistance of a wheelchair, which is completed by using a wheelchair impact resistance detection system, and includes the following steps:

[0020] S1. During the pendulum test, the wheelchair is first pushed to the designated position and the wheelchair support frame is limited by the flexible telescopic clamp. Then the sliding block is pushed to slide along the strip slide until the two pendulum balls are located on the left and right sides of the wheelchair respectively. Then the electromagnets on both sides of the sliding block are turned on to electromagnetically fix the sliding block and the strip slide.

[0021] S2. Then, the pendulum ball is manually pulled through the pull ring to create a certain angle between the pendulum ball and the wheelchair. Finally, the pull ring is released to allow the pendulum ball to hit the wheelchair from the side. After this reciprocating process, the wheelchair is removed and the damage to the wheelchair after the test is manually observed to determine whether the wheelchair meets the impact test requirements. That is, if the wheelchair has minor deformations or bumps but does not affect normal use, the wheelchair has passed the impact resistance test. On the contrary, if the wheelchair has large-scale deformations or damages that affect normal use, it means that the wheelchair has failed the impact resistance test.

[0022] S3. After observing the damage of the wheelchair, if the wheelchair can still be used normally, the electromagnets of the arc segments of the two arc-shaped sliders 2 are turned on, so that the two arc-shaped sliders 2 are electromagnetically fixed to the supporting disc.

[0023] S4. After the threaded rod 1 drives the support disc and the wheelchair to rise to the specified position, the power supply of the electromagnets on the two arc-shaped sliders 2 is disconnected. At this time, the support disc and the wheelchair fall freely along the sliding groove to the supporting plate under the action of gravity. Finally, the damage of the wheelchair after the fall is manually observed to determine whether the wheelchair meets the impact test requirements. That is, if the wheelchair has paint peeling, minor deformation and bumps, but it does not affect normal use, then the wheelchair passes the impact resistance test. On the contrary, if the wheelchair has a skewed support frame, large-scale deformation and damage, which affects normal use, it means that the wheelchair fails the impact resistance test.

[0024] S5. After the free - fall detection method is completed, control the first threaded rod to reverse and drive the second arc - shaped slider to move downward to the upper end of the support disc. Continuously turn on the electromagnets on the two second arc - shaped sliders so that the two second arc - shaped sliders are electromagnetically fixed to the support disc. Observe the damage condition of the wheelchair. If it can still be used normally, control the first threaded rod to rotate forward and drive the wheelchair to continue moving upward. The two racks are electromagnetically adsorbed after contact, and the adjusting gear is rotated by the meshing of the teeth, and when the adjusting gear rotates, the other second threaded rods and the synchronous belt wheels rotate through the toothed belt arranged on the second threaded rod.

[0025] S6. As the support disc gradually rises, the adjusting square plate is拨动 by the adjusting plate and then drives the wheelchair to rotate 90 degrees. At this time, the lower L - shaped auxiliary plate is in a stepped shape after extending. Then control the first electric push rod to drive the C - shaped connecting frame and the scissor - type telescopic frame to move forward. At this time, the flexible telescopic clamping block that holds and limits the wheelchair support frame is pulled and moves away synchronously. Then control the telescopic section of the second electric push rod to extend and push against the I - shaped frame and the wheelchair, gradually separating the support frame of the wheelchair from the flexible telescopic clamping block. At this time, the wheelchair will roll along the stepped L - shaped auxiliary plate below and freely roll to the lower supporting plate under the action of gravity.

[0026] S7. Finally, manually observe the damage condition of the wheelchair after it has fallen to judge whether the wheelchair meets the impact detection requirements. That is, if only small deformations and knocks occur in the important components of the wheelchair, but it does not affect normal use, then the impact resistance performance detection of the wheelchair is qualified. On the contrary, if the important components of the wheelchair are disassembled, deformed on a large scale, etc., affecting normal use, it means that the impact resistance performance detection of the wheelchair is unqualified.

[0027] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0028] 1. The present invention is provided with a variety of detection methods, so that the wheelchair does not need to be repeatedly disassembled and assembled during the detection work, improving the efficiency of the wheelchair detection work. At the same time, a single device can complete a variety of detection work on the wheelchair, thus ensuring the coherence of the detection work and further improving the efficiency of wheelchair detection.

[0029] 2. The present invention can adjust the height of the second threaded rod driving the support disc and the wheelchair to rise according to the detection method of the wheelchair, and uses the free - fall method to detect the wheelchair, ensuring the diversity of the detection method and the detection height. At the same time, the horizontal section lengths of the four L - shaped auxiliary plates are different, and the toothed belt drives the synchronous belt wheels to rotate so that the four L - shaped auxiliary plates extend in a stepped shape to simulate the real falling and rolling environment of the wheelchair, increasing the comprehensiveness of the detection types, thereby improving the persuasiveness of the impact resistance performance detection results of the wheelchair. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a three-dimensional structure schematic diagram when the present invention detects a wheelchair.

[0031] Figure 2 It is a structure schematic diagram of the present invention.

[0032] Figure 3 It is a partial enlarged view of part A in the present invention.

[0033] Figure 4 It is a partial structure schematic diagram of the clamping part in the present invention.

[0034] Figure 5 It is a partial structure schematic diagram of the auxiliary part in the present invention.

[0035] Figure 6 It is a schematic diagram of the positional relationship between the mounting plate and the support disc in the present invention.

[0036] Figure 7 It is a first position schematic diagram of the internal structure of the U-shaped mounting frame in the present invention.

[0037] Figure 8 It is a second position schematic diagram of the internal structure of the U-shaped mounting frame in the present invention.

[0038] Fig. 9 It is a bottom view of a partial structure of the detection mechanism II of the present invention.

[0039] Fig.10 It is a schematic diagram of the positional relationship between the arc-shaped slider II and the first threaded rod and the first slide rod in the present invention.

[0040] Fig.11 It is a schematic diagram of the state change of two racks from separation to connection in the present invention.

[0041] Fig.12 It is a three-dimensional structure schematic diagram of the wheelchair to be detected in the present invention.

[0042] Reference numerals in the drawings: 1, supporting plate; 2, mounting plate; 21, sliding groove; 211, strip-shaped through groove; 22, strip-shaped groove; 221, limiting groove; 23, adjusting plate; 3, limiting mechanism; 31, supporting plate; 311, sliding groove; 312, blocking plate; 313, electric push rod II; 32, clamping part; 321, scissor-type telescopic frame; 322, clamping block; 323, flexible telescopic clamping block; 324, C-shaped connecting frame; 325, strip-shaped plate; 326, electric push rod I; 4, C-shaped mounting frame; 41, strip-shaped bearing plate; 411, strip-shaped sliding groove; 412, first motor; 413, driving gear; 414, driven gear; 5, first detection mechanism; 51, driving part; 511, supporting disc; 512, arc-shaped slider II; 513, first threaded rod; 514, first sliding rod; 515, adjusting square plate; 52, auxiliary part; 521, second threaded rod; 522, second sliding rod; 523, L-shaped auxiliary plate; 524, synchronous pulley; 525, toothed belt; 526, driving group; 5261, adjusting gear; 5262, rack; 52621, T-shaped mating block; 6, second detection mechanism; 61, sliding block; 62, rectangular plate; 621, mounting groove; 622, mounting post; 623, pendulum ball; 7, wheelchair. Detailed implementation manners

[0043] The following will Figure 1-10 further elaborate on this application in detail.

[0044] Please refer to Figure 1 and Fig.10 , a wheelchair anti-impact performance detection system, including a supporting plate 1. A slope (not shown in the drawings) for assisting the sliding of the wheelchair 7 is provided on the front side wall of the supporting plate 1 in the front-rear direction. An installation plate 2 is fixedly arranged vertically at the upper end of the supporting plate 1. A limiting mechanism 3 for limiting the wheelchair 7 is arranged on the installation plate 2, and the wheelchair 7 is placed on the upper end surface of the supporting plate 1 through the limiting mechanism 3.

[0045] Please refer to Figure 1 and Figure 2 , the limiting mechanism 3 includes two supporting plates 31 fixedly arranged on the front side wall of the installation plate 2 and distributed in the up-down direction. A clamping part 32 for clamping and limiting the wheelchair 7 is jointly arranged between the two supporting plates 31. The rear end of the clamping part 32 is provided with a C-shaped mounting frame 4 with an opening facing forward and fixed on the upper end surface of the supporting plate 1.

[0046] Please refer to Figure 3 and Figure 5, a first detection mechanism 5 for free-fall detection of the wheelchair 7 is provided between the U-shaped mounting bracket 4 and the mounting plate 2. The first detection mechanism 5 includes a driving part 51 arranged inside the mounting plate 2 and used to drive the wheelchair 7 to move upward repeatedly, and an auxiliary part 52 for assisting the detection of the wheelchair 7 is arranged at the rear end of the driving part 51.

[0047] Please refer to Figure 1 , Figure 7 and Fig. 9 , a strip-shaped bearing plate 41 with a strip-shaped chute 411 opened on the lower end surface is fixedly arranged on the upper end surface of the U-shaped mounting bracket 4, and a second detection mechanism 6 for pendulum impact testing of the wheelchair 7 is arranged inside the strip-shaped chute 411.

[0048] During specific operation, first, the wheelchair 7 is manually pushed along the slope of the supporting plate 1 to the front end of the mounting plate 2, and then the clamping part 32 is controlled to complete the clamping work on the support frame of the wheelchair 7 to ensure that the wheelchair 7 does not shift during the detection work. Then, the second detection mechanism 6 is controlled to perform several groups of pendulum impact tests on the wheelchair 7 first, and the damaged condition of the wheelchair 7 is observed to judge whether it meets the detection requirements.

[0049] After the pendulum impact detection is completed, the driving part 51 is controlled to drive the wheelchair 7 to move upward to a specified height, and then the wheelchair 7 is freely dropped from a high place to simulate the impact performance of the wheelchair 7 when it falls from a high place during use. By observing the damaged condition of the wheelchair 7, the impact resistance of the wheelchair 7 when it falls is judged.

[0050] Finally, the wheelchair 7 can be further tested for impact resistance. The driving part 51 drives the wheelchair 7 to move upward to the highest position. Through the cooperation of the driving part 51 and the auxiliary part 52, an actual application environment, such as a staircase environment, is simulated. Then, the wheelchair 7 is pushed down to roll down along the set steps. By observing the damaged condition of the wheelchair 7 after rolling, the impact resistance of the wheelchair 7 in the staircase environment is judged.

[0051] It should be noted that the pendulum detection work on the wheelchair 7 is to simulate the impact resistance of the wheelchair 7 when it is laterally impacted during actual use. The free-fall detection work on the wheelchair 7 is to simulate the impact resistance of the wheelchair 7 when it falls from a step with a large height difference during actual use. The rolling detection work on the wheelchair 7 is to simulate the impact resistance of the wheelchair 7 when it rolls down along a stepped staircase and is collided at different directions and angles in an actual use scenario.

[0052] Please refer to Figure 3 , Figure 4 and Fig.12, sliding grooves 311 are formed at the rear positions of the upper end faces of the two support plates 31. A blocking plate 312 extending in the left-right direction is fixedly arranged on the upper end face of the lower support plate 31. An electric push rod two 313 extending in the left-right direction is fixedly arranged on the upper end face of the lower support plate 31 through a mounting table. The front end of the telescopic section of the electric push rod two 313 is detachably installed with an I-shaped frame connected to the support frame of the wheelchair 7.

[0053] Please refer to Figure 3 and Figure 4 , the clamping part 32 includes four clamping groups. The four clamping groups are respectively arranged on the two support plates 31 and are symmetric in the left-right direction. Each clamping group includes a scissor-type telescopic frame 321. The hinge point of the scissor-type telescopic frame 321 near the front end is rotatably connected to the upper end face of the corresponding support plate 31. A clamping block 322 for clamping and limiting the support frame of the wheelchair 7 is fixedly arranged at the front end of the scissor-type telescopic frame 321. Flexible telescopic clamping blocks 323 are fixedly arranged on the side walls of the two clamping blocks 322 close to each other; the clamping part 32 further includes a U-shaped connecting frame 324. Two U-shaped connecting frames 324 are arranged in a vertically distributed manner between the two clamping groups on the corresponding support plates 31. The two vertical sections of the U-shaped connecting frame 324 are respectively fixedly connected to the hinge points at the rear ends of the corresponding two scissor-type telescopic frames 321. The two U-shaped connecting frames 324 are fixedly connected through a strip-shaped plate 325 sliding inside the sliding groove 311. The rear end of the fixed section of the electric push rod two 313 slidably penetrates through the strip-shaped plate 325. And an electric push rod one 326 is fixedly connected to the front end face of the upper U-shaped connecting frame 324. The electric push rod one 326 is fixedly arranged on the upper end face of the upper support plate 31 through a mounting seat.

[0054] Please refer to Figure 1 and Fig. 9 , the detection mechanism two 6 includes a sliding block 61 slidably arranged inside the strip-shaped chute 411 and having electromagnets at both the left and right ends. A rectangular plate 62 is fixedly arranged at the lower end face of the sliding block 61 through a cylinder. Two mounting grooves 621 are formed at the lower end face of the rectangular plate 62. The two mounting grooves 621 are formed in a left-right symmetric manner and mounting columns 622 are rotatably arranged inside the mounting grooves 621. A pendulum ball 623 with an end face mounting pull ring is fixedly arranged at the lower end of the mounting column 622 through a rope.

[0055] During specific operation, first, the wheelchair 7 is pushed along the slope to the position of the baffle 312, and then the I-shaped frame is fixedly connected to the wheelchair 7 by means of bolts and nuts. At the same time, the first electric push rod 326 is controlled to extend, and the upper C-shaped connecting frame 324 moves backward. At this time, the lower C-shaped connecting frame 324 moves backward synchronously under the drive of the strip plate 325. When the two C-shaped connecting frames 324 move backward, they simultaneously pull the hinge points at the rear ends of the corresponding scissor-type telescopic frames 321. At this time, the clamping blocks 322 provided at the front ends of the scissor-type telescopic frames 321 and the flexible telescopic clamping blocks 323 approach synchronously. After the flexible telescopic clamping block 323 first contacts the support frame of the wheelchair 7, as the C-shaped connecting frame 324 continues to be pushed, the flexible telescopic clamping block 323 on the same scissor-type telescopic frame 321 is gradually pushed and deformed by the support frame of the wheelchair 7 and retracted into the corresponding clamping block 322. The clamping work of the support frame of the wheelchair 7 is completed through the deformation of the flexible telescopic clamping block 323 and the reaction force on the support frame of the wheelchair 7. The support frame of the wheelchair 7 is adaptively clamped and limited by the flexible telescopic clamping block 323 to prevent the wheelchair 7 from deflecting before the detection work.

[0056] After the wheelchair 7 is clamped and limited, the sliding block 61 is manually pushed to slide along the strip-shaped chute 411 until the two pendulum balls 623 are respectively located on the left and right sides of the wheelchair 7. Then, the electromagnets on both sides of the sliding block 61 are turned on to magnetically fix the sliding block 61 to the strip-shaped chute 411. Subsequently, the pendulum ball 623 is pulled by the manual through the pull ring, so that a certain angle is generated between the pendulum ball 623 and the wheelchair 7. Finally, the pull ring is released, so that the pendulum ball 623 swings around the mounting column 622 under the action of gravity and impacts the wheelchair 7 from the side. After repeating this process, the wheelchair 7 is unloaded, and the damaged condition of the wheelchair 7 after the detection is observed manually to judge whether the wheelchair 7 meets the impact detection requirements. That is, if the wheelchair 7 has minor deformations and knocks, but does not affect normal use, the impact resistance performance detection of the wheelchair 7 is qualified. On the contrary, if the wheelchair 7 has large-area deformations, damages, etc., affecting normal use, it means that the impact resistance performance detection of the wheelchair 7 is unqualified.

[0057] It should be noted that when controlling the pendulum ball 623 to perform the impact resistance detection on the wheelchair 7, the diversity of the pendulum hammer detection work can be satisfied by replacing the two pendulum balls 623 in different left and right directions or using the two pendulum balls 623 for testing, thereby ensuring the accuracy of the detection results.

[0058] Please refer to Figure 2 and Figure 5The front side wall of the mounting plate 2 is provided with a sliding groove 21 extending in the up-down direction, and the rear side wall of the mounting plate 2 is provided with two strip grooves 22 penetrating the mounting plate 2, one of which is located in the middle, and the other is located on the left side, wherein the width of the strip groove 22 in the middle is wider than the width of the strip groove 22 on the left side, the upper end of the strip groove 22 on the left side is set to an opening shape and the inner walls on the left and right sides thereof are provided with two limit grooves 221 distributed in the up-down direction, and the inner wall of the sliding groove 21 is provided with a plurality of strip through grooves 211 extending in the left-right direction from top to bottom, and the plurality of strip through grooves 211 are connected with the strip groove 22 in the middle, and an adjusting plate 23 is fixedly provided in a symmetrical manner in an up-down manner at the upper position of the right side of the rear side wall of the mounting plate 2, and a chamfer is provided on the side away from each other of the two adjusting plates 23, and the two adjusting plates 23 are respectively provided on the upper and lower sides of the uppermost strip through groove 211.

[0059] Please refer to Figure 5 , Figure 7 and Fig. 9 The lower end surface of the strip support plate 41 is located just above the mounting plate 2 and is fixed with a No. 1 motor 412 with an output shaft facing downward and rotatably connected to the mounting plate 2 through a motor seat. A driving gear 413 is fixed to the outer wall of the output shaft of the No. 1 motor 412. The lower end surface of the strip support plate 41 is also rotatably provided with a driven gear 414 that is always meshed with the driving gear 413 through a rotating shaft.

[0060] Please refer to Figure 4 , Figure 5 , Figure 6 and Fig.10 The driving part 51 includes a supporting disc 511 slidably arranged inside the sliding groove 21, and the sliding groove 21 is slidably arranged with two arc-shaped sliders 512 located above the supporting disc 511 and having arc-shaped sections of electromagnets. The interior of the sliding groove 21 is also provided with a threaded rod 513 and a slide rod 514 extending in the vertical direction in the left and right directions. The upper end of the threaded rod 513 is fixedly connected to the driven gear 414 through a connecting column, and the threaded rod 513 and the slide rod 514 respectively penetrate the corresponding arc-shaped slider 512, and the threaded rod 513 is threadedly connected to the corresponding arc-shaped slider 512. The supporting disc 511 is divided into a connecting section with a larger diameter and fixed to the arc-shaped slider 512 by magnetic attraction, and a mounting section with a smaller diameter and fixedly connected to the two support plates 31. The mounting section is rotatably arranged inside the connecting section through a bearing, and a circular rod penetrating the middle strip groove 22 is fixedly arranged on the rear side wall of the connecting section of the supporting disc 511, and an adjusting square plate 515 is fixedly arranged on the outer wall of the circular rod.

[0061] After the impact resistance test of the wheelchair 7 is completed using the swing ball 623, the damage of the wheelchair 7 is observed. If it can still be used normally, the No. 1 motor 412 is then started to drive the driving gear 413 to engage the driven gear 414 to rotate. At this time, the threaded rod 1 513 rotates synchronously driven by the connecting column. At the same time, the electromagnets of the arc segments of the two arc-shaped sliders 2 512 are turned on, so that the two arc-shaped sliders 2 512 are electromagnetically fixed to the support disk 511.

[0062] When the threaded rod 1 513 rotates, it drives the arc-shaped slider 2 512 and the supporting disc 511 to slide upward along the sliding groove 21. According to the detection requirements, the rising height of the arc-shaped slider 2 512 and the supporting disc 511 is controlled. After the wheelchair 7 is driven to the specified height by the supporting disc 511, the power supply of the electromagnets on the two arc-shaped sliders 2 512 is disconnected. At this time, the supporting disc 511 and the wheelchair 7 fall freely along the sliding groove 21 to the supporting plate 1 under the action of gravity, thereby completing the second impact resistance performance detection method of the wheelchair 7.

[0063] Finally, the damage of the wheelchair 7 after the fall is manually observed to determine whether the wheelchair 7 meets the impact test requirements. That is, if the wheelchair 7 has paint peeling, minor deformation and bumps, but it does not affect normal use, then the wheelchair 7 passes the impact resistance test. On the contrary, if the wheelchair 7 has a skewed support frame, large-scale deformation and damage, which affects normal use, then it means that the wheelchair 7 fails the impact resistance test.

[0064] It should be noted that, according to the detection method of the wheelchair 7, the height to which the threaded rod 2 521 drives the support disc 511 and the wheelchair 7 to rise can be adjusted to ensure that detection heights at different heights can be performed. At the same time, the wheelchair 7 is detected by free fall to simulate the scene when the wheelchair 7 falls from a step with a high drop, so as to make the detection result more convincing. When the support disc 511 drives the wheelchair 7 to fall freely, the arc-shaped slider 2 512, which is slidably connected to the slide rod 514 on one side, also falls freely to the upper end of the support disc 511 due to gravity.

[0065] Please refer to Figure 7 and Figure 8The auxiliary part 52 includes an adjustment group arranged above the corresponding strip-shaped through groove 211, each adjustment group includes a threaded rod 521 rotatably arranged on the rear side wall of the mounting plate 2 and a slide rod 522 fixedly arranged on the rear side wall of the mounting plate 2, and the outer walls of the threaded rod 521 and the slide rod 522 are jointly provided with an L-shaped auxiliary plate 523, wherein the L-shaped auxiliary plate 523 is threadedly connected to the threaded rod 521, and the L-shaped auxiliary plate 523 is slidably connected to the slide rod 522, and the rear side wall of the threaded rod 521 is also fixedly provided with a synchronous pulley 524, and several of the synchronous pulleys 524 are connected by a toothed belt 525 for transmission, and the auxiliary part 52 also includes a driving group 526 for driving the L-shaped auxiliary plate 523 to move synchronously.

[0066] Please refer to Figure 7 , Figure 8 and Fig.11 The driving group 526 includes an adjusting gear 5261 which is rotatably arranged on the rear side wall of the mounting plate 2 and fixedly connected to the second threaded rod 521 at the upper end. Two racks 5262 are arranged inside the left strip groove 22 and on the right side of the adjusting gear 5261 and slide in the up and down directions. The length of the upper rack 5262 is longer than that of the lower rack 5262. The left and right side walls of the upper rack 5262 are arranged in two limiting grooves 221 located at the lower end through spring telescopic blocks with chamfers at the upper and lower ends. The upper rack 5262 is always meshed with the adjusting gear 5261. The lower rack 5262 is fixedly connected to the connecting section of the supporting disc 511. A T-shaped matching groove is arranged on the lower end surface of the upper rack 5262. The two corners of the vertical section of the T-shaped matching groove are chamfered. The upper end of the lower rack 5262 is arranged as an electromagnet. Two T-shaped matching blocks 52621 with chamfers at the telescopic sections are fixedly arranged at the end surface of the lower rack 5262 corresponding to the position of the T-shaped matching groove.

[0067] When the free fall detection method is completed, the threaded rod 1 513 is controlled to reverse and drive the arc-shaped slider 2 512 to move downward to the upper end of the support disc 511, and the electromagnets on the two arc-shaped sliders 2 512 are continuously connected, so that the two arc-shaped sliders 2 512 are electromagnetically fixed to the support disc 511, and the damage of the wheelchair 7 is observed. If it can still be used normally, the threaded rod 1 513 is controlled to rotate forward and drive the wheelchair 7 to continue to move upward. When the wheelchair 7 and the support disc 511 move upward, they will drive the rack 5262 below to gradually move upward along the strip groove 22. When the upper end face of the lower rack 5262 slides and conflicts with the lower end face of the upper rack 5262, the T-shaped matching block 52621 set on the upper end face of the lower rack 5262 will be inserted into the matching groove on the lower end face of the upper rack 5262 through the telescopic sections with chamfers at both ends, and then the electromagnet on the upper end of the lower rack 5262 is turned on, and the two racks 5262 are electromagnetically fixed. As the support disc 511 continues to move upward, the upper rack 5262 begins to engage with the adjustment gear 5261 and the threaded rod 2 521 and the synchronous pulley 524 to rotate.

[0068] When the synchronous pulley 524 at the uppermost end rotates, the toothed belt 525 synchronously meshes with the other three synchronous pulleys 524 to rotate, thereby causing the four L-shaped auxiliary plates 523 to slide along the corresponding threaded rod 2 521 and the sliding rod 2 522 and gradually approach the mounting plate 2. As the wheelchair 7 continues to move upward, the L-shaped auxiliary plates 523 below the wheelchair 7 will gradually extend along their respective strip-shaped through grooves 211. When the adjusting square plate 515 on the supporting disc 511 moves to the bottom of the adjusting plate 23, as the supporting disc 511 continues to move upward, the adjusting square plate 515 is chamfered through the adjusting plate 23 to drive the wheelchair 7 to rotate ninety degrees. At this time, the three L-shaped auxiliary plates 523 below gradually extend.

[0069] It should be noted that the horizontal sections of the four L-shaped auxiliary plates 523 have different lengths, that is, the horizontal sections of the L-shaped auxiliary plates 523 gradually increase from top to bottom.

[0070] Then, the electric push rod 1 326 is controlled to drive the I-shaped connecting frame 324 and the scissor-type telescopic frame 321 to move forward. At this time, the flexible telescopic clamp 323 that limits the position of the wheelchair 7 support frame is pulled and moved away synchronously. Then, the telescopic section of the electric push rod 2 313 is controlled to extend and push the I-shaped frame and the wheelchair 7, gradually making the support frame of the wheelchair 7 separate from the flexible telescopic clamp 323. At this time, the wheelchair 7 will roll along the three-step L-shaped auxiliary plate 523 below, and roll freely to the supporting plate 1 below due to gravity.

[0071] When the detection method needs to adjust the detection height of the wheelchair 7, the threaded rod 1 513 can continue to rotate to drive the support disc 511 and the wheelchair 7 to rise to the highest point. At this time, the four L-shaped auxiliary plates 523 below are fully extended. When the adjustment square plate 515 moves to the upper end of the two adjustment plates 23, the threaded rod 1 513 is controlled to reverse. At this time, the adjustment square plate 515 rotates ninety degrees in the opposite direction under the chamfering of the upper adjustment plate 23, and then the work of the above-mentioned electric push rod 1 326 is repeated, so that the wheelchair 7 rolls along the four-step stepped L-shaped auxiliary plate 523 below, and rolls freely to the lower support plate 1 under gravity.

[0072] Finally, the damage of the wheelchair 7 after rolling is manually observed to determine whether the wheelchair 7 meets the impact test requirements. That is, if the important components of the wheelchair 7 only have minor deformations and bumps, but do not affect normal use, then the wheelchair 7 passes the impact resistance test. On the contrary, if the important components of the wheelchair 7 fall apart, have large-scale deformations, etc., which affect normal use, then it means that the wheelchair 7 fails the impact resistance test.

[0073] It should be noted that the two adjacent threaded rods 521 and sliding rods 522 are arranged in an alternating manner, the purpose of which is to ensure that the mounting plate 2 is subjected to uniform force when the synchronous pulley 524 rotates, and the upper limit groove 221 arranged in the left side strip groove 22 of the mounting plate 2 is to ensure that the rack 5262 will not separate from the strip groove 22 when moving upward, the purpose of which is to simulate the real falling and rolling environment of the wheelchair 7, and further improve the persuasiveness of the impact resistance test results of the wheelchair 7.

[0074] In addition, among the three detection methods, only when simulating the wheelchair 7 rolling down the stairs, the telescopic section of the electric push rod 2 313 and the I-beam frame are no longer fixed, while when performing impact detection and free fall detection, the telescopic section of the electric push rod 2 313 and the I-beam frame are fixed, and the I-beam frame and the wheelchair 7 are both fixed.

[0075] In addition, the present invention also provides a method for detecting the impact resistance of a wheelchair, comprising the following steps:

[0076] S1: During the pendulum test, the wheelchair 7 is first pushed to the designated position and the support frame of the wheelchair 7 is limited by the flexible telescopic clamp 323. Then, the sliding block 61 is pushed to slide along the strip groove 411 until the two pendulum balls 623 are respectively located on the left and right sides of the wheelchair 7. Then, the electromagnets on both sides of the sliding block 61 are turned on so that the sliding block 61 is electromagnetically fixed to the strip groove 411.

[0077] S2: Then, the swing ball 623 is manually pulled through the pull ring to form a certain angle between the swing ball 623 and the wheelchair 7. Finally, the pull ring is released to make the swing ball 623 hit the wheelchair 7 from the side. After this reciprocating process, the damage of the wheelchair 7 after the test is manually observed to determine whether the wheelchair 7 meets the impact test requirements. That is, if the wheelchair 7 has slight deformation or bumps, but does not affect normal use, the wheelchair 7 passes the impact resistance test. On the contrary, if the wheelchair 7 has large-area deformation or damage, which affects normal use, it means that the wheelchair 7 fails the impact resistance test.

[0078] S3: After observing the damage of the wheelchair 7, if the wheelchair 7 can still be used normally, the electromagnets of the arc segments of the two arc-shaped sliders 512 are turned on, so that the two arc-shaped sliders 512 are electromagnetically fixed to the supporting disc 511.

[0079] S4: After the threaded rod 1 513 drives the support disc 511 and the wheelchair 7 to rise to the specified position, the power supply of the electromagnets on the two arc-shaped sliders 2 512 is disconnected. At this time, the support disc 511 and the wheelchair 7 fall freely along the sliding groove 21 to the supporting plate 1 under the action of gravity. Finally, the damage of the wheelchair 7 after falling is manually observed to determine whether the wheelchair 7 meets the impact test requirements. That is, if the wheelchair 7 has paint peeling, minor deformation and bumps, but it does not affect normal use, then the wheelchair 7 passes the impact resistance test. On the contrary, if the wheelchair 7 has a skewed support frame, large-area deformation and damage, which affects normal use, it means that the wheelchair 7 fails the impact resistance test.

[0080] S5: When the free fall detection method is completed, the threaded rod 1 513 is controlled to reverse and drive the arc-shaped slider 2 512 to move downward to the upper end of the supporting disc 511, and the electromagnets on the two arc-shaped sliders 2 512 are continuously connected so that the two arc-shaped sliders 2 512 are electromagnetically fixed to the supporting disc 511 again, and the damage of the wheelchair 7 is observed. If it can still be used normally, the threaded rod 1 513 is controlled to rotate forward and drive the wheelchair 7 to continue to move upward. The two racks 5262 are electromagnetically adsorbed after contact, and the adjusting gear 5261 is engaged with the tooth meshing adjustment gear 5261 to rotate. When the adjusting gear 5261 rotates, the toothed belt 525 set on the threaded rod 2 521 meshes with the remaining threaded rods 2 521 and the synchronous pulley 524 to rotate.

[0081] S6: As the supporting disc 511 gradually rises, the adjusting square plate 515 is toggled by the adjusting plate 23, and then the wheelchair 7 is driven to rotate by ninety degrees. At this time, the lower L-shaped auxiliary plate 523 is in a stepped shape after being extended. Subsequently, the electric push rod 326 is controlled to drive the C-shaped connecting frame 324 and the scissor-type telescopic frame 321 to move forward. At this time, the flexible telescopic clamping block 323 that clamps and limits the support frame of the wheelchair 7 is pulled and moves away synchronously. Subsequently, the telescopic section of the electric push rod 313 is extended and abuts against the I-shaped frame and the wheelchair 7, gradually separating the support frame of the wheelchair 7 from the flexible telescopic clamping block 323. At this time, the wheelchair 7 will roll along the lower stepped L-shaped auxiliary plate 523 and freely roll to the lower supporting plate 1 under the action of gravity.

[0082] S7: Finally, the damaged condition of the wheelchair 7 after it has fallen is observed manually to determine whether the wheelchair 7 meets the impact detection requirements. That is, if only minor deformations and knocks occur in the important component parts of the wheelchair 7, but it does not affect normal use, then the impact resistance performance detection of the wheelchair 7 is qualified. On the contrary, if the important component parts of the wheelchair 7 are disassembled, deformed on a large scale, etc., affecting normal use, it indicates that the impact resistance performance detection of the wheelchair 7 is unqualified.

[0083] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outside", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, the meanings of "multiple", "multiple roots", and "multiple groups" are two or more.

[0084] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0085] The embodiments of the present specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A wheelchair impact resistance testing system, comprising a support plate (1), characterized in that: The front side wall of the supporting plate (1) is provided with a slope for the auxiliary wheelchair (7) to slide in the front-back direction. The upper end of the supporting plate (1) is fixedly provided with a mounting plate (2) in the vertical direction. A limiting mechanism (3) for limiting the wheelchair (7) is arranged on the mounting plate (2). The wheelchair (7) is placed on the upper end surface of the supporting plate (1) through the limiting mechanism (3). The limiting mechanism (3) includes two support plates (31) fixedly arranged on the front side wall of the mounting plate (2) and distributed in the up-down direction. A clamping part (32) for clamping and limiting the wheelchair (7) is jointly arranged between the two support plates (31). The rear end of the clamping part (32) is provided with a U-shaped mounting frame (4) with an opening facing forward and fixed on the upper end surface of the supporting plate (1). A detection mechanism I (5) for free-fall detection of the wheelchair (7) is arranged between the U-shaped mounting frame (4) and the mounting plate (2). The detection mechanism I (5) includes a driving part (51) arranged inside the mounting plate (2) and used for driving the wheelchair (7) to move up repeatedly. The rear end of the driving part (51) is provided with an auxiliary part (52) for assisting in detecting the wheelchair (7). The upper end surface of the U-shaped mounting frame (4) is also fixedly provided with a strip-shaped bearing plate (41) with a strip-shaped chute (411) opened on the lower end surface. A detection mechanism II (6) for pendulum impact test of the wheelchair (7) is arranged inside the strip-shaped chute (411).

2. A wheelchair impact resistance testing system according to claim 1, characterized in that: A sliding groove (21) is opened on the front side wall of the mounting plate (2) in the up-down direction. Two strip-shaped grooves (22) penetrating through the mounting plate (2) are opened on the rear side wall of the mounting plate (2). The width of the middle strip-shaped groove (22) is wider than that of the left-side strip-shaped groove (22). The upper end of the left-side strip-shaped groove (22) is open, and two limiting grooves (221) distributed in the up-down direction are opened on the inner walls on both the left and right sides thereof. A plurality of strip-shaped through grooves (211) extending in the left-right direction are opened on the inner wall of the sliding groove (21) from top to bottom. The plurality of strip-shaped through grooves (211) are communicated with the middle strip-shaped groove (22). Adjusting plates (23) are fixedly arranged on the upper right side of the rear side wall of the mounting plate (2) in a vertically symmetrical manner. The two adjusting plates (23) are respectively on the upper and lower sides of the uppermost strip-shaped through groove (211), and chamfers are arranged on the sides of the two adjusting plates (23) away from each other.

3. A wheelchair impact resistance testing system according to claim 2, characterized in that: The auxiliary part (52) described above includes an adjustment group arranged above the corresponding strip-shaped through groove (211). Each adjustment group includes a second threaded rod (521) rotatably arranged on the rear side wall of the mounting plate (2) and a second sliding rod (522) fixedly arranged on the rear side wall of the mounting plate (2). A U-shaped auxiliary plate (523) whose rear side wall is fixedly connected to the inner wall of the U-shaped mounting frame (4) through a spring telescopic rod is jointly arranged on the outer walls of the second threaded rod (521) and the second sliding rod (522). Among them, the U-shaped auxiliary plate (523) is threadedly connected to the second threaded rod (521). A synchronous pulley (524) is also fixedly arranged on the rear side wall of the second threaded rod (521). The plurality of synchronous pulleys (524) are传动连接 by a toothed belt (525). The auxiliary part (52) also includes a driving group (526) for driving the U-shaped auxiliary plate (523) to move synchronously.

4. A wheelchair impact resistance testing system according to claim 3, characterized in that: The driving group (526) includes an adjustment gear (5261) rotatably arranged on the rear side wall of the mounting plate (2) and fixedly connected to the uppermost second threaded rod (521). Two racks (5262) slide up and down along the vertical direction inside the left-side strip-shaped groove (22) and on the right side of the adjustment gear (5261). Among them, the length of the upper rack (5262) is longer than that of the lower rack (5262). The left and right side walls of the upper rack (5262) are arranged in two lower limiting grooves (221) through spring telescopic blocks with chamfers opened at the upper and lower ends. The upper rack (5262) is always meshed with the adjustment gear (5261). The connecting section of the lower rack (5262) is fixedly connected to the support disc (511). A T-shaped mating groove is opened on the lower end surface of the upper rack (5262). Chamfers are opened at the two corners of the vertical section of the T-shaped mating groove. The upper end of the lower rack (5262) is provided as an electromagnet. Two T-shaped mating blocks (52621) with chamfers opened at the telescopic sections are fixedly arranged on the end surface of the lower rack (5262) corresponding to the position of the T-shaped mating groove.

5. A wheelchair impact resistance testing system according to claim 1, characterized in that: Sliding grooves (311) are opened at the positions close to the rear on the upper end surfaces of the two support plates (31). A blocking plate (312) extending in the left-right direction is fixedly arranged on the upper end surface of the lower support plate (31). An electric push rod two (313) is fixedly arranged on the upper end surface of the lower support plate (31) through a mounting table. The front end of the telescopic section of the electric push rod two (313) is detachably installed with an I-shaped frame connected to the support frame of the wheelchair (7). It should be noted that there is an error in the original text where "传动连接" should be translated as "drivably connected" or "transmission connection" more accurately. The above translation is adjusted according to the overall context.

6. A wheelchair impact resistance testing system according to claim 5, characterized in that: The described clamping part (32) includes four clamping groups, which are respectively arranged on two support plates (31) and are symmetric in the left-right direction. Each clamping group includes a scissor-type telescopic frame (321). The hinge point of the scissor-type telescopic frame (321) near the front end is rotatably connected to the upper end surface of the corresponding support plate (31). A clamping block (322) for clamping and limiting the support frame of the wheelchair (7) is fixedly arranged at the front end of the scissor-type telescopic frame (321). Flexible telescopic clamping blocks (323) are fixedly arranged on the side walls of the two clamping blocks (322) close to each other. The clamping part (32) further includes a U-shaped connecting frame (324). Two U-shaped connecting frames (324) are provided and are arranged in a vertically distributed manner between the two clamping groups on the corresponding support plates (31). The two vertical sections of the U-shaped connecting frame (324) are respectively fixedly connected to the hinge points at the rear ends of the corresponding two scissor-type telescopic frames (321). The two U-shaped connecting frames (324) are fixedly connected by a strip-shaped plate (325) sliding inside the sliding groove (311). The rear end of the fixed section of the electric push rod two (313) slides through the strip-shaped plate (325). And an electric push rod one (326) is fixedly connected to the front end surface of the upper U-shaped connecting frame (324). The electric push rod one (326) is fixedly arranged on the upper end surface of the upper support plate (31) through a mounting seat.

7. A wheelchair impact resistance testing system according to claim 2, characterized in that: The described driving part (51) includes a support disc (511) slidably arranged inside the sliding groove (21). The support disc (511) is fixedly connected to the lower rack (5262). Two arc-shaped sliders two (512) are slidably arranged inside the sliding groove (21) above the support disc (511), and the arc-shaped sections of both are electromagnets. A threaded rod one (513) and a slide rod one (514) extending in the vertical direction are arranged in the left-right direction inside the sliding groove (21). The threaded rod one (513) and the slide rod one (514) respectively penetrate through the corresponding arc-shaped sliders two (512), and the threaded rod one (513) is threadedly connected to the corresponding arc-shaped slider two (512). The support disc (511) is divided into a connection section with a larger diameter and magnetically fixed to the arc-shaped slider two (512) and a mounting section with a smaller diameter and fixedly connected to the two support plates (31). The mounting section is rotatably arranged inside the connection section through a bearing. A circular rod penetrating through the middle strip-shaped groove (22) is fixedly arranged on the rear side wall of the connection section of the support disc (511). An adjusting square plate (515) is fixedly arranged on the outer wall of the circular rod.

8. A wheelchair impact resistance testing system according to claim 7, characterized in that: A first motor (412) with an output shaft facing downwards and rotatably connected to the mounting plate (2) is fixedly arranged on the lower end surface of the strip-shaped bearing plate (41) and directly above the mounting plate (2) through a motor seat. A driving gear (413) is fixed on the outer wall of the output shaft of the first motor (412). A driven gear (414) that is always meshed with the driving gear (413) is rotatably arranged on the lower end surface of the strip-shaped bearing plate (41) through a rotating shaft. A connecting column fixedly connected to the threaded rod one (513) is fixedly connected to the lower end surface of the driven gear (414).

9. A wheelchair impact resistance testing system according to claim 8, characterized in that: The second detection mechanism (6) comprises a sliding block (61) which is slidably arranged inside the strip slide groove (411) and has electromagnets at both ends. The lower end surface of the sliding block (61) is fixedly provided with a rectangular plate (62) through a cylinder. The lower end surface of the rectangular plate (62) is provided with two mounting grooves (621). The two mounting grooves (621) are provided in a left-right symmetrical manner and a mounting column (622) is rotatably arranged inside the mounting groove (621). The lower end of the mounting column (622) is fixedly provided with a swing ball (623) with a pull ring mounted on the end surface through a rope.

10. A method for testing the impact resistance of a wheelchair, characterized in that: The wheelchair impact resistance testing system according to claim 1 is used to complete the process, including the following steps: S1. During the pendulum test, the wheelchair (7) is first pushed to a designated position and the support frame of the wheelchair (7) is clamped and limited by the flexible telescopic clamp (323). Then, the sliding block (61) is pushed to slide along the strip slide groove (411) until the two pendulum balls (623) are respectively located on the left and right sides of the wheelchair (7). Then, the electromagnets on both sides of the sliding block (61) are turned on so that the sliding block (61) and the strip slide groove (411) are electromagnetically fixed. S2, the swing ball (623) is then manually pulled through the pull ring so that a certain angle is formed between the swing ball (623) and the wheelchair (7), and finally the pull ring is released so that the swing ball (623) hits the wheelchair (7) from the side. After this reciprocating process, the wheelchair (7) is removed, and the damage of the wheelchair (7) after the test is completed is manually observed to determine whether the wheelchair (7) meets the impact test requirements. That is, if the wheelchair (7) has slight deformation or bumps, but does not affect normal use, the wheelchair (7) has passed the impact resistance test. On the contrary, if the wheelchair (7) has large-area deformation or damage, which affects normal use, it means that the wheelchair (7) has failed the impact resistance test; S3, after observing the damage of the wheelchair (7), if the wheelchair (7) can still be used normally, the electromagnets of the arc segments of the two arc-shaped sliders (512) are turned on, so that the two arc-shaped sliders (512) are electromagnetically fixed to the supporting disc (511); S4, after the threaded rod (513) drives the support disc (511) and the wheelchair (7) to rise to the designated position, the power supply of the electromagnets on the two arc-shaped sliders (512) is disconnected, and the support disc (511) and the wheelchair (7) fall freely along the sliding groove (21) to the support plate (1) under the action of gravity. Finally, the damage of the wheelchair (7) after falling is manually observed to judge whether the wheelchair (7) meets the impact test requirements. That is, if the wheelchair (7) has paint peeling, minor deformation and bumps, but does not affect normal use, the wheelchair (7) passes the impact resistance test. On the contrary, if the wheelchair (7) has a skewed support frame, large-area deformation and damage, which affects normal use, it means that the wheelchair (7) fails the impact resistance test. S5. After the free-fall detection method is completed, control the first threaded rod (513) to reverse and drive the second arc-shaped slider (512) to move downward to the upper end of the support disc (511). Continue to turn on the electromagnets on the two second arc-shaped sliders (512) so that the two second arc-shaped sliders (512) are electromagnetically fixed to the support disc (511). Observe the damage condition of the wheelchair (7). If it can still be used normally, control the first threaded rod (513) to rotate forward and drive the wheelchair (7) to continue moving upward. The two racks (5262) are electromagnetically adsorbed after contact, and the adjustment gear (5261) is rotated by engaging the teeth of the racks. When the adjustment gear (5261) rotates, the other second threaded rods (521) and the synchronous pulleys (524) rotate through the toothed belt (525) arranged on the second threaded rod (521). S6. As the support disc (511) gradually rises, the adjustment square plate (515) is拨动 by the adjustment plate (23), and then drives the wheelchair (7) to rotate by ninety degrees. At this time, the lower L-shaped auxiliary plate (523) is in a stepped shape after extending. Then control the first electric push rod (326) to drive the U-shaped connecting frame (324) and the scissor-type telescopic frame (321) to move forward. At this time, the flexible telescopic clamping block (323) that clamps and limits the support frame of the wheelchair (7) is pulled and moves away synchronously. Then control the telescopic section of the second electric push rod (313) to extend and push against the I-shaped frame and the wheelchair (7), gradually separating the support frame of the wheelchair (7) from the flexible telescopic clamping block (323). At this time, the wheelchair (7) will roll along the lower stepped L-shaped auxiliary plate (523) and freely roll to the lower supporting plate (1) under the action of gravity. S7. Finally, manually observe the damage condition of the wheelchair (7) after it has fallen to judge whether the wheelchair (7) meets the impact detection requirements. That is, if only minor deformations and knocks occur in the important components of the wheelchair (7), but it does not affect normal use, then the impact resistance test of the wheelchair (7) is qualified. On the contrary, if the important components of the wheelchair (7) are disassembled or deformed大面积, affecting normal use, it means that the impact resistance test of the wheelchair (7) is unqualified.

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