Wheelchair frame pressure resistance detection device and detection method

Abstract

The invention relates to the technical field of wheelchair manufacturing, in particular to a wheelchair frame pressure resistance detection device and method.The wheelchair frame pressure resistance detection device comprises a frame-shaped base, a stable moving mechanism and a detection mechanism, the stable moving mechanism is arranged on the frame-shaped base, and the detection mechanism is connected to the stable moving mechanism; the stable moving mechanism is used for limiting and fixing a plurality of positions of the wheelchair frame in multiple directions and then reciprocating, and an impact block of the detection mechanism is driven to do circumferential movement and linear reciprocating movement while reciprocating; and through synchronous movement in multiple directions, multiple different positions of the wheelchair frame are subjected to sequential impact test, so that the comprehensiveness and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchair manufacturing, and specifically to a pressure resistance detection device and method for a wheelchair frame. Background Art

[0002] The wheelchair frame is the core component of a wheelchair, and its design and performance directly affect the safety, comfort, and durability of the wheelchair. Wheelchair frames are widely used in the medical, daily life, and sports fields. To ensure the safety and comfort of the wheelchair during use, the wheelchair frame needs to be subjected to a pressure resistance strength test during production and manufacturing. Through the pressure resistance strength test, the bearing capacity and structural integrity of the wheelchair frame under the use state are evaluated.

[0003] Common pressure resistance detection methods include: static load test, dynamic load test, fatigue test, and impact test; most of the existing impact tests are to perform an overall impact on the wheelchair frame, and it is impossible to perform sequential impacts on multiple different positions of the wheelchair frame, so only the impact test results of the wheelchair frame under uniform force can be obtained. However, during use, users cannot fully ensure that the wheelchair frame is uniformly stressed when受力, so the overall impact test method cannot ensure the comprehensiveness and accuracy of the evaluation of the impact test results of the wheelchair frame. Summary of the Invention

[0004] Technical Problem to be Solved: A pressure resistance detection device and method for a wheelchair frame provided by the present invention can solve the problems pointed out in the above background art.

[0005] Technical Solution: To achieve the above object, the present invention adopts the following technical solution. A pressure resistance detection device for a wheelchair frame includes a frame-shaped base, a stable movement mechanism, and a detection mechanism. The frame-shaped base is provided with a stable movement mechanism, and the detection mechanism is connected to the stable movement mechanism.

[0006] The stable movement mechanism includes a fixing component for limiting multiple positions of the wheelchair frame and a sliding component for driving the fixing component to move. The frame-shaped base is a U-shaped structure with an upward opening. A sliding groove is horizontally opened on the inner bottom surface of the frame-shaped base, and the sliding component is arranged in the sliding groove. A force transmission component for transmitting the impact force to the wheelchair frame is also arranged on the frame-shaped base on the right side of the fixing component.

[0007] The detection mechanism includes a transmission component. The lower part of the transmission component is connected to the sliding component, and an impact component for detecting multiple positions of the wheelchair frame is arranged on the transmission component.

[0008] Further, the sliding assembly includes a threaded rod rotatably installed in the sliding groove of the frame-shaped base. A dual-shaft motor is installed at the right end of the frame-shaped base through a motor base. The left output end of the dual-shaft motor extends into the sliding groove and is connected to the threaded rod. A linkage block is threadedly connected to the threaded rod and is slidably arranged in the sliding groove.

[0009] Further, the fixing assembly includes a mounting plate slidably arranged inside the frame-shaped base. The middle of the lower end surface of the mounting plate is connected to the linkage block. A plurality of balls for reducing friction are evenly arranged at the bottom of the mounting plate. A positioning base is fixedly installed on the mounting plate, and the positioning base has a stepped rectangular structure with a higher left side and a lower right side.

[0010] Further, support blocks are symmetrically installed on the front and rear of the higher left section of the positioning base. The support block is a U-shaped structure with an upward-opening cross-section and an inverted eight-shaped upper part. A right baffle is fixedly installed on the lower right section of the positioning base. Right abutting blocks are symmetrically installed on the front and rear of the end surface of the right baffle close to the support block.

[0011] Further, a left baffle is arranged on the left side of the mounting plate relative to the positioning base. There are symmetrically arranged convex blocks at the lower end of the left baffle. Sliding grooves are opened at the positions corresponding to the convex blocks of the left baffle on the upper end surface of the mounting plate. The convex blocks are slidably arranged in the sliding grooves. A left abutting block corresponding to the right abutting block is installed on the side end surface of the left baffle close to the support block. An electric telescopic rod is installed in the middle of the left end of the positioning base, and the telescopic end of the electric telescopic rod is connected to the left baffle.

[0012] Further, the force transmission assembly includes a limiting plate. Limiting plates are symmetrically installed on the front and rear of the frame-shaped base at the position on the right side of the positioning base. Vertical grooves are opened on the opposite surfaces of the limiting plates. A force transmission plate is slidably arranged between the vertical grooves of the two limiting plates. Recovery springs are installed at the bottoms of the vertical grooves, and the upper ends of the recovery springs are jointly connected to the lower end of the force transmission plate. A semi-circular groove is opened at the position on the lower end surface of the force transmission plate corresponding to the right abutting block.

[0013] Further, the transmission assembly includes an L-shaped fixing frame fixedly arranged on the ground. The right output shaft of the dual-shaft motor is rotatably installed on the vertical section of the L-shaped fixing frame. A transmission shaft is rotatably installed at the position above the right output shaft of the dual-shaft motor on the vertical section of the L-shaped fixing frame. A transmission belt is jointly connected to the outer walls of the right output shaft of the dual-shaft motor and the transmission shaft. A stabilizing plate is installed below the horizontal section of the L-shaped fixing frame, and the transmission shaft rotatably penetrates through the stabilizing plate.

[0014] Furthermore, the impact assembly includes a sleeve, a sleeve is rotatably installed below the horizontal section of the L-shaped fixed frame and located at the left side of the transmission shaft, a transmission bevel gear is fixedly installed on the outer wall of the sleeve, an active bevel gear meshing with the transmission bevel gear is fixedly installed on the outer wall of the transmission shaft close to the sleeve, a disc is installed at the lower end of the sleeve, and fixed frames are evenly installed at the lower end of the disc close to the outer wall, an annular frame is arranged between the multiple fixed frames, and the inner lower part of the fixed frame is commonly connected to the outer wall of the annular frame A stepped groove which is wider at the top and narrower at the bottom is provided at the lower end of the circular ring frame, a sliding block is slidably installed in the stepped groove, a telescopic cylinder is installed at the lower end of the sliding block, an impact block is installed at the telescopic end of the telescopic cylinder, one end of the sliding block close to the outer wall of the circular ring frame is connected to the stepped groove through an extrusion spring, a through hole is provided on one end surface of the stepped groove close to the inner wall of the circular ring frame, a resistance rod is slidably arranged in the through hole, one end of the resistance rod is installed on the sliding block, and the other end of the resistance rod extends to the middle part of the circular ring frame and is provided with a rolling ball.

[0015] Furthermore, the impact assembly also includes a center rod, which is vertically arranged inside the sleeve, and the top of the center rod is fixedly installed below the horizontal section of the L-shaped fixing frame, and the lower end of the center rod extends and passes through the bottom of the disc, and the lower end of the center rod is connected to a screw rod, and a limiting disc is installed at the lower end of the screw rod. The outer wall of the screw rod is threadedly connected to an extrusion column, and the lower part of the extrusion column is a truncated cone structure whose size decreases from top to bottom. The upper outer wall of the extrusion column is symmetrically provided with driving vertical grooves front and back, and linkage rods are installed at the position corresponding to the driving vertical groove on the end face of the fixing frame close to the circular ring frame, and the linkage rod is slidably arranged in the driving vertical groove on the side away from the fixing frame.

[0016] Furthermore, a wheelchair frame pressure resistance detection method is performed by a wheelchair frame pressure resistance detection device, comprising the following steps:

[0017] Multi-directional limit fixation: The wheelchair frame to be inspected is placed on the fixing component manually or by machine, and the fixing component sequentially limits and fixes the wheelchair frame in multiple positions in the front, back, left and right directions.

[0018] Reciprocating movement of the frame: The fixed wheelchair frame is driven to reciprocate in the sliding groove through the sliding assembly, so that the wheelchair frame can receive uniform impact test.

[0019] Flat plate force transmission impact: The downward impact force of the impact component is transmitted to the wheelchair frame through the force transmission component. The wheelchair frame is accurately subjected to impact testing while also improving its stability during impact.

[0020] Multi-position impact: The transmission component is used to make the sliding component perform horizontal reciprocating motion, while driving the impact component to perform circular rotation and linear reciprocating multi-directional displacement multi-position impact.

[0021] Observe the test results: After the test is completed, observe whether the wheelchair frame is deformed or damaged to determine the test results.

[0022] Beneficial effects:

[0023] 1. The wheelchair frame is limited and fixed in multiple directions at multiple positions through a stable moving mechanism, and then reciprocated. The reciprocating movement drives the impact block of the detection mechanism to move in a circular motion and in a linear reciprocating motion. Through multi-directional synchronous movement, impact tests are performed on multiple different positions of the wheelchair frame in sequence to improve the comprehensiveness and accuracy of the detection.

[0024] 2. The force transmission component can be set to limit the upper position of the wheelchair frame and transmit the impact force at the same time, so that different positions of the wheelchair frame can be accurately impacted, simulating the test of the wheelchair frame under different force points.

[0025] 3. The sliding assembly cooperates with the transmission assembly to drive the impact block on the impact assembly to move in a circular motion while driving the wheelchair frame to move back and forth. At the same time, it moves back and forth along the radius of the circular frame. Through multi-directional synchronous movement, multiple positions of the wheelchair frame can be impact tested in sequence, thereby improving the comprehensiveness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 For the present invention Figure 1 A magnified view of.

[0028] Figure 3 It is a schematic structural diagram of the fixing assembly of the present invention.

[0029] Figure 4 It is a front cross-sectional view of the present invention.

[0030] Figure 5 For the present invention Figure 4 B is a magnified view of .

[0031] Figure 6 For the present invention Figure 4 CC section view.

[0032] Figure 7 It is a flow chart of the present invention.

[0033] In the figure: 1. Frame-shaped base; 11. Sliding groove; 2. Stable moving mechanism; 21. Fixing component; 211. Mounting plate; 212. Positioning base; 213. Supporting clamping block; 214. Right baffle; 215. Right abutting clamping block; 216. Left baffle; 217. Left abutting clamping block; 218. Electric telescopic rod; 22. Sliding component; 221. Threaded rod; 222. Biaxial motor; 223. Linking block; 23. Force transmission component; 231. Limiting plate; 232. Force transmission plate; 233. Recovery spring; 234. Semi-circular groove; 3. Detection mechanism; 31. Transmission component; 311. L-shaped frame; 312. Transmission shaft; 313. Transmission belt; 314. Stable plate; 32. Impact component; 321. Sleeve; 322. Transmission bevel gear; 323. Driving bevel gear; 324. Disc; 325. Fixed frame; 326. Ring frame; 327. Sliding block; 328. Telescopic cylinder; 329. Impact block; 3210. Extrusion spring; 3211. Contact rod; 3212. Rolling bead; 3213. Central rod; 3214. Screw; 3215. Extrusion column; 3216. Linking rod; 3217. Driving vertical groove. Detailed implementation mode

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1 , the present invention provides a technical solution: a pressure resistance detection device for a wheelchair frame, including a frame-shaped base 1, a stable moving mechanism 2 and a detection mechanism 3. A stable moving mechanism 2 is arranged on the frame-shaped base 1, and a detection mechanism 3 is connected to the stable moving mechanism 2.

[0036] Please refer to Figure 1 , in this embodiment, the stable moving mechanism 2 includes a fixing component 21 for limiting the wheelchair frame at multiple positions and a sliding component 22 for driving the fixing component 21 to move. The frame-shaped base 1 is a U-shaped structure with an upward opening. A sliding groove 11 is horizontally opened on the inner bottom surface of the frame-shaped base 1. The sliding component 22 is arranged in the sliding groove 11. A force transmission component 23 for transmitting the impact force to the wheelchair frame is further arranged on the frame-shaped base 1 on the right side of the fixing component 21.

[0037] Please refer to Figure 1 , Figure 3 , Figure 4In this embodiment, the sliding assembly 22 includes a threaded rod 221, which is rotatably installed in the sliding groove of the frame-shaped base 1. A dual-axis motor 222 is installed at the right end of the frame-shaped base 1 through a motor seat. The left output end of the dual-axis motor 222 extends into the sliding groove 11 and is connected to the threaded rod 221. A linkage block 223 is threadedly connected to the threaded rod 221, and the linkage block 223 is slidably set in the sliding groove 11; when working, the dual-axis motor 222 is started, and the dual-axis motor 222 drives the threaded rod 221 to rotate in the sliding groove, and the rotation of the threaded rod 221 drives the linkage block 223 to move, and the movement of the linkage block 223 drives the fixed assembly 21 to move synchronously.

[0038] See also Figure 3 , Figure 4, in this embodiment, the fixing component 21 includes a mounting plate 211 which is slidably arranged inside the frame-shaped base 1. The middle part of the lower end surface of the mounting plate 211 is connected to the linkage block 223. A plurality of balls (not shown in the figure) for reducing friction are uniformly arranged at the bottom of the mounting plate 211. A positioning base 212 is fixedly mounted on the mounting plate 211, and the positioning base 212 has a stepped rectangular structure with the left side higher than the right side. On the higher left section of the positioning base 212, support blocks 213 are symmetrically mounted front and back. The support block 213 has a U-shaped structure with an upward-opening cross-section and an inverted V-shaped upper part. On the lower right section of the positioning base 212, a right baffle 214 is fixedly mounted. On the end surface of the right baffle 214 close to the support block 213, right abutting blocks 215 are symmetrically mounted front and back. On the left side of the positioning base 212, a left baffle 216 is arranged on the mounting plate 211. There are protrusions symmetrically arranged front and back at the lower end of the left baffle 216. At the position corresponding to the protrusions of the left baffle 216 on the upper end surface of the mounting plate 211, a sliding groove is formed. The protrusions are slidably arranged in the sliding groove. On the side end surface of the left baffle 216 close to the support block 213, a left abutting block 217 corresponding to the right abutting block 215 is mounted. In the middle of the left end of the positioning base 212, an electric telescopic rod 218 is mounted, and the telescopic end of the electric telescopic rod 218 is connected to the left baffle 216. During operation, the wheelchair frame to be detected is placed on the mounting plate 211 manually or by a machine. During the placement process, the middle part of the wheelchair frame enters the support block 213 under the guiding action of the upper part of the support block 213, so as to limit the front and back positions of the middle part of the wheelchair frame. Due to the structure of the positioning base 212 with the left side higher than the right side, the legs with different heights on the left and right sides of the wheelchair frame can be supported and placed synchronously, ensuring the stable placement of the wheelchair frame. Then, the wheelchair frame is pushed from left to right, so that the leg on the right side of the wheelchair frame is caught in the right abutting block 215. Subsequently, the electric telescopic rod 218 is started to drive the left baffle 216 and the left abutting block 217 to move to clamp the leg on the left side of the wheelchair frame, realizing the front and back limit fixation of the left and right sides of the wheelchair frame. Moreover, by moving the left baffle 216 and the right baffle 214 to clamp the wheelchair frame, the left and right limit fixation of the wheelchair frame is realized, thus realizing the multi-directional limit fixation of the wheelchair frame and improving the stability during detection.

[0039] Please refer to Figure 1The force transmission component 23 includes a limit plate 231. The frame-shaped base 1 is located at the right side of the positioning base 212 and the limit plate 231 is symmetrically installed in the front and back. The opposite surface of the limit plate 231 is provided with a vertical groove. A force transmission plate 232 is slidably arranged between the vertical grooves of the two limit plates 231. A restoring spring 233 is installed at the bottom of the vertical groove. The upper end of the restoring spring 233 is connected to the lower end of the force transmission plate 232. A semi-arc groove 234 is provided on the lower end surface of the force transmission plate 232 at a position corresponding to the right stop block 215. When working, when the sliding component 22 drives the wheelchair frame on the fixed component 21 to move rightward to the bottom of the force transmission plate 232 between the limit plates 231, the bracket on the top of the wheelchair frame enters the semi-arc groove 234 for limiting. When testing, the impact force impacts the force transmission plate 232, so that the force transmission plate 232 transmits the impact force to the wheelchair frame. The normal force transmission of the force transmission plate 232 can be ensured by the restoring spring 233.

[0040] See also Figure 1 , Figure 3 , Figure 4 , Figure 5In this embodiment, the detection mechanism 3 includes a transmission assembly 31, the lower part of the transmission assembly 31 is connected to the sliding assembly 22, and the transmission assembly 31 is provided with an impact assembly 32 for detecting multiple positions of the wheelchair frame; the transmission assembly 31 includes an L-shaped frame 311, the L-shaped frame 311 is fixedly arranged on the ground, the right output shaft of the dual-axis motor 222 is rotatably installed on the vertical section of the L-shaped frame 311, the vertical section of the L-shaped frame 311 is located above the dual-axis motor 222 and a transmission shaft 312 is rotatably installed, the transmission shaft 312 and the outer wall of the right output shaft of the dual-axis motor 222 are connected with a transmission belt 313, a stabilizing plate 314 is installed below the horizontal section of the L-shaped frame 311, and the transmission shaft 312 is rotatably passed through the stabilizing plate 314; the stability of the transmission shaft 312 is improved by the stabilizing plate 314. The impact assembly 32 includes a sleeve 321, and the sleeve 321 is rotatably installed below the horizontal section of the L-shaped frame 311 and located at the left side of the transmission shaft 312. A transmission bevel gear 322 is fixedly sleeved on the outer wall of the sleeve 321, and an active bevel gear 323 meshing with the transmission bevel gear 322 is fixedly sleeved on the outer wall of the transmission shaft 312 close to the sleeve 321. A disk 324 is installed at the lower end of the sleeve 321, and fixed frames 325 are evenly installed at the lower end of the disk 324 near the outer wall. Circular frames 326 are arranged between the plurality of fixed frames 325, and the lower inner side of the fixed frames 325 is commonly connected to the outer wall of the circular frame 326. A stepped groove which is wider at the top and narrower at the bottom is provided at the lower end of the circular ring frame 326, and a sliding block 327 is slidably installed in the stepped groove. A telescopic cylinder 328 is installed at the lower end of the sliding block 327, and an impact block 329 is installed at the telescopic end of the telescopic cylinder 328. One end of the sliding block 327 close to the outer wall of the circular ring frame 326 is connected to the stepped groove through an extrusion spring 3210, and a through hole is provided on one end surface of the stepped groove close to the inner wall of the circular ring frame 326, and a resistance rod 3211 is slidably arranged in the through hole, one end of the resistance rod 3211 is installed on the sliding block 327, and the other end of the resistance rod 3211 extends to the middle part of the circular ring frame 326 and is provided with a rolling ball 3212. During operation, the dual-axis motor 222 drives the fixed part to move gradually while driving the transmission belt 313 to move, so that the transmission shaft 312 rotates. The rotation of the transmission shaft 312 drives the active bevel gear 323 to rotate, so that the driven bevel gear meshing therewith also rotates synchronously, thereby driving the sleeve 321 to rotate, and the disc 324, the fixed frame 325, and the circular frame 326 under the sleeve 321 all rotate, so that the telescopic cylinder 328 and the impact block 329 rotate in a circle, which can drive the impact block 329 to rotate in a circle while the wheelchair frame moves back and forth, and perform a circumferential multi-position impact test.

[0041] See also Figure 2 , Figure 4 , Figure 5 , Figure 6The impact assembly 32 also includes a center rod 3213, a center rod 3213 is vertically arranged inside the sleeve 321, the top of the center rod 3213 is fixedly installed below the horizontal section of the L-shaped frame 311, the lower end of the center rod 3213 extends and penetrates below the disc 324, the lower end of the center rod 3213 is connected to a screw rod 3214, a limited position disc is installed at the lower end of the screw rod 3214, an outer wall of the screw rod 3214 is threadedly connected to an extrusion column 3215, the lower part of the extrusion column 3215 is a truncated cone structure with a size decreasing from top to bottom, a driving vertical groove 3217 is symmetrically opened on the upper outer wall of the extrusion column 3215, and a linkage rod 3216 is installed at a position corresponding to the driving vertical groove 3217 on the end surface of the fixed frame 325 close to the annular frame 326, and the linkage rod 3216 slides away from the side of the fixed frame 325 The wheelchair 3210 is movable in the driving vertical slot 3217; when working, the linkage rod 3216 cooperates with the driving vertical slot 3217, and the fixing frame 325 rotates while driving the extrusion column 3215 to rotate synchronously. Since the extrusion column 3215 is threadedly connected to the screw rod 3214, the screw rod 3214 is fixed, and the extrusion column 3215 can move up and down while rotating. The frustum structure at the lower part of the extrusion column 3215 can squeeze the interference rod 3211 during the up and down movement, so that the interference rod 3211 slides in the through hole and drives the sliding block 327 to slide in the stepped groove, thereby realizing a multi-position impact test in which the wheelchair frame moves in a circular motion while moving back and forth along its radial direction during the left and right reciprocating motion, and can simulate the bearing capacity under different stress conditions.

[0042] In addition, the present invention also provides a wheelchair frame pressure resistance detection method, which is completed by a wheelchair frame pressure resistance detection device, and includes the following steps:

[0043] Multi-directional limit fixation: The wheelchair frame to be inspected is placed on the mounting plate 211 manually or by machine. During the placement process, the middle part of the wheelchair frame enters the support block 213 under the guiding action of the upper part of the support block 213, and the front and rear position of the middle part of the wheelchair frame is limited. Through the structure of the positioning base 212 with the left side higher and the right side lower, the legs of different heights on the left and right sides of the wheelchair frame can be synchronously supported and placed to ensure that the wheelchair frame is placed stably. Then, the wheelchair frame is pushed from left to right so that the leg on the right side of the wheelchair frame is clamped in the right support block 215. Subsequently, the electric telescopic rod 218 is started to drive the left baffle plate 216 and the left support block 217 to move and clamp the leg on the left side of the wheelchair frame, thereby realizing front and rear limit fixation of the left and right sides of the wheelchair frame. Moreover, the left baffle plate 216 and the right baffle plate 214 are moved to clamp the wheelchair frame, thereby realizing left and right limit fixation of the wheelchair frame, thereby realizing multi-directional limit fixation of the wheelchair frame.

[0044] The frame reciprocates: the dual-axis motor 222 drives the threaded rod 221 to rotate in the sliding groove, the rotation of the threaded rod 221 drives the linkage block 223 to move, and the movement of the linkage block 223 drives the fixed component 21 to move synchronously, so that the wheelchair frame can reciprocate to obtain a uniform impact test.

[0045] Flat plate force transmission impact: When the sliding component 22 drives the wheelchair frame on the fixed component 21 to move to the right to under the force transmission plate 232 between the limit plates 231, the bracket on the top of the wheelchair frame enters the semi-arc groove 234 for limit. During the test, the impact force impacts the force transmission plate 232, so that the force transmission plate 232 transmits the impact force to the wheelchair frame. The normal force transmission of the force transmission plate 232 can be guaranteed by the recovery spring 233, so that the wheelchair frame can be subjected to impact test while also improving the stability of the impact.

[0046] Multi-position impact: The dual-axis motor 222 drives the fixed part to gradually move while driving the transmission belt 313 to move, so that the transmission shaft 312 rotates. The rotation of the transmission shaft 312 drives the active bevel gear 323 to rotate, so that the driven bevel gear meshing therewith also rotates synchronously, thereby driving the sleeve 321 to rotate, and the disc 324, the fixed frame 325, and the circular frame 326 under the sleeve 321 all rotate, so that the telescopic cylinder 328 and the impact block 329 rotate in a circle, and can drive the impact block 329 to rotate in a circle while moving back and forth with the wheelchair frame, so as to perform a circumferential multi-position impact test; through the linkage rod 3216 and the driving vertical slot 3217 With cooperation, when the fixed frame 325 rotates, the extrusion column 3215 is driven to rotate synchronously at the same time. Due to the threaded connection between the extrusion column 3215 and the screw 3214, the screw 3214 is fixed, and the extrusion column 3215 can move up and down while rotating. The frustum structure at the bottom of the extrusion column 3215 can squeeze the resistance rod 3211 during the up and down movement, so that the resistance rod 3211 slides in the through hole and drives the sliding block 327 to slide in the step groove, thereby realizing a multi-position impact test in which the wheelchair frame moves in a circular motion while moving back and forth along its radial direction during the left and right reciprocating motion, and can simulate the bearing capacity under different force conditions.

[0047] Observe the test results: After the test is completed, observe whether the wheelchair frame is deformed or damaged to determine the test results.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheelchair frame pressure resistance testing device, comprising a frame-shaped base (1), a stable moving mechanism (2) and a testing mechanism (3), characterized in that: The frame-shaped base (1) is a U-shaped structure with an upward opening. A stable movement mechanism (2) is arranged on the frame-shaped base (1), and a detection mechanism (3) is connected to the stable movement mechanism (2). The stable movement mechanism (2) includes a fixing component (21) for limiting the wheelchair frame at multiple positions and a sliding component (22) for driving the fixing component (21) to move. A sliding groove (11) is horizontally opened on the inner bottom surface of the frame-shaped base (1), and the sliding component (22) is arranged in the sliding groove (11). A force transmission component (23) for transmitting the impact force to the wheelchair frame is also arranged on the frame-shaped base (1) on the right side of the fixing component (21). The detection mechanism (3) includes a transmission component (31). The lower part of the transmission component (31) is connected to the sliding component (22), and an impact component (32) for detecting multiple positions of the wheelchair frame is arranged on the transmission component (31).

2. A wheelchair frame pressure resistance detection device according to claim 1, characterized in that: The sliding component (22) includes a threaded rod (221). The threaded rod (221) is rotatably installed in the sliding groove of the frame-shaped base (1). A double-shaft motor (222) is installed on the right end of the frame-shaped base (1) through a motor seat. The left output end of the double-shaft motor (222) extends into the sliding groove (11) and is connected to the threaded rod (221). A linkage block (223) is threadedly connected to the threaded rod (221), and the linkage block (223) is slidably arranged in the sliding groove (11).

3. A wheelchair frame pressure resistance detection device according to claim 2, characterized in that: The fixing component (21) includes a mounting plate (211). The mounting plate (211) is slidably arranged inside the frame-shaped base (1). The middle part of the lower end surface of the mounting plate (211) is connected to the linkage block (223). A plurality of balls for reducing friction are evenly arranged at the bottom of the mounting plate (211). A positioning base (212) is fixedly installed on the mounting plate (211). The positioning base (212) is a stepped rectangular structure with a higher left side and a lower right side.

4. A wheelchair frame pressure resistance detection device according to claim 3, characterized in that: Supporting blocks (213) are symmetrically installed on the front and rear of the higher left section of the positioning base (212). The supporting blocks (213) are U-shaped structures with an upward opening cross-section and an inverted eight-shaped upper part. A right baffle (214) is fixedly installed on the lower right section of the positioning base (212). Right abutting blocks (215) are symmetrically installed on the front and rear of one end surface of the right baffle (214) close to the supporting block (213).

5. A wheelchair frame pressure resistance detection device according to claim 4, characterized in that: A left baffle (216) is arranged on the left side of the mounting plate (211) and located at the positioning base (212). There are convex blocks symmetrically arranged on the front and rear of the lower end of the left baffle (216). Sliding grooves are opened at the positions corresponding to the convex blocks on the upper end surface of the mounting plate (211). The convex blocks are slidably arranged in the sliding grooves. A left abutting block (217) corresponding to the right abutting block (215) is installed on one end surface of the left baffle (216) close to the supporting block (213). An electric telescopic rod (218) is installed in the middle of the left end of the positioning base (212). The telescopic end of the electric telescopic rod (218) is connected to the left baffle (216).

6. A wheelchair frame pressure resistance detection device according to claim 4, characterized in that: The force transmission component (23) comprises a limit plate (231), the frame-shaped base (1) is located at the right side of the positioning base (212) and the limit plate (231) is symmetrically installed in the front and rear, the opposite surface of the limit plate (231) is provided with a vertical groove, a force transmission plate (232) is slidably arranged between the vertical grooves of the two limit plates (231), a restoring spring (233) is installed at the bottom of the vertical groove, the upper end of the restoring spring (233) is connected to the lower end of the force transmission plate (232), and a semi-arc groove (234) is provided at a position of the lower end surface of the force transmission plate (232) corresponding to the right abutting block (215).

7. A wheelchair frame pressure resistance detection device according to claim 2, characterized in that: The transmission assembly (31) comprises an L-shaped frame (311), the L-shaped frame (311) is fixedly arranged on the ground, the right output shaft of the dual-axis motor (222) is rotatably mounted on the vertical section of the L-shaped frame (311), a transmission shaft (312) is rotatably mounted on the vertical section of the L-shaped frame (311) located above the dual-axis motor (222), the transmission shaft (312) and the outer wall of the right output shaft of the dual-axis motor (222) are connected to a transmission belt (313), a stabilizing plate (314) is installed below the horizontal section of the L-shaped frame (311), and the transmission shaft (312) is rotatably mounted on the stabilizing plate (314).

8. A wheelchair frame pressure resistance detection device according to claim 7, characterized in that: The impact assembly (32) comprises a sleeve (321), a sleeve (321) is rotatably mounted below the horizontal section of the L-shaped frame (311) and located at the left side of the transmission shaft (312), a transmission bevel gear (322) is fixedly mounted on the outer wall of the sleeve (321), an active bevel gear (323) meshing with the transmission bevel gear (322) is fixedly mounted on the outer wall of the transmission shaft (312) close to the sleeve (321), a disk (324) is mounted on the lower end of the sleeve (321), fixed frames (325) are evenly mounted at the lower end of the disk (324) close to the outer wall, a plurality of fixed frames (325) are arranged between the fixed frames (326), and the inner sides of the lower parts of the fixed frames (325) are in contact with the outer wall of the circular frame (326). The circular ring frame (326) is connected, a stepped groove which is wide at the top and narrow at the bottom is provided at the lower end, a sliding block (327) is slidably installed in the stepped groove, a telescopic cylinder (328) is installed at the lower end of the sliding block (327), and an impact block (329) is installed at the telescopic end of the telescopic cylinder (328), one end of the sliding block (327) close to the outer wall of the circular ring frame (326) is connected to the stepped groove through an extrusion spring (3210), a through hole is provided on one end surface of the stepped groove close to the inner wall of the circular ring frame (326), a resisting rod (3211) is slidably provided in the through hole, one end of the resisting rod (3211) is installed on the sliding block (327), and the other end of the resisting rod (3211) extends to the middle part of the circular ring frame (326) and is provided with a rolling ball (3212).

9. A wheelchair frame pressure resistance detection device according to claim 8, characterized in that: The impact assembly (32) further comprises a center rod (3213), the center rod (3213) being vertically arranged inside the sleeve (321), the top end of the center rod (3213) being fixedly installed below the horizontal section of the L-shaped frame (311), the lower end of the center rod (3213) extending through the lower part of the disc (324), the lower end of the center rod (3213) being connected to a screw rod (3214), the lower end of the screw rod (3214) being installed with a limited position disc, the outer wall of the screw rod (3214) being threadedly connected to the outer wall of the screw rod (3214) An extrusion column (3215) is provided. The lower part of the extrusion column (3215) is a truncated cone structure with a size decreasing from top to bottom. A driving vertical groove (3217) is symmetrically provided on the upper outer wall of the extrusion column (3215) in front and back. A linkage rod (3216) is installed at a position corresponding to the driving vertical groove (3217) on the end surface of one side of the fixed frame (325) close to the circular frame (326). The linkage rod (3216) is slidably arranged in the driving vertical groove (3217) on the side away from the fixed frame (325).

10. A wheelchair frame pressure resistance testing method, characterized in that: The wheelchair frame pressure resistance detection device as claimed in claim 1 is used to complete the process, including the following steps: Multi-directional limit fixing: the wheelchair frame to be inspected is placed on the fixing component (21) manually or by machine, and the fixing component (21) sequentially limits and fixes multiple positions of the wheelchair frame in the front, back, left, and right directions; Reciprocating movement of the frame: the fixed wheelchair frame is driven to reciprocate in the sliding groove (11) by the sliding assembly (22), so that the wheelchair frame can be subjected to a uniform impact test; Flat plate force transmission impact: the downward impact force of the impact component (32) is transmitted to the wheelchair frame through the force transmission component (23), so that the wheelchair frame is accurately subjected to the impact test and the stability when subjected to the impact is improved; Multi-position impact: The transmission component (31) causes the sliding component (22) to perform horizontal reciprocating motion while driving the impact component (32) to perform multi-position impact with circular rotation and linear reciprocating multi-directional displacement; Observe the test results: After the test is completed, observe whether the wheelchair frame is deformed or damaged to determine the test results.

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