CN218973781U

CN218973781U - Whole vehicle strength fatigue resistance testing device of wheelchair

Info

Publication number: CN218973781U
Application number: CN202223378104.5U
Authority: CN
Inventors: 陈培新
Original assignee: Foshan Nanhai Anjian Medical Equipment Fittings Co ltd
Current assignee: Foshan Nanhai Anjian Medical Equipment Fittings Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-05
Anticipated expiration: 2032-12-15

Abstract

The utility model provides a whole car intensity fatigue resistance testing arrangement of wheelchair, includes the mount that is used for fixing the wheelchair, is used for the testboard of wheelchair whole car intensity test and is used for recording experimental data's controller, through installing the striking piece on rotating device's track, makes the wheelchair simulate the road surface and traveles on level ground, can reflect more when the wheelchair meets the actual effect that the striking piece impacted, makes the detected data more accurate; the impact blocks are arranged in opposite phases, so that the impact blocks at the two ends of the supporting plate are not on the same straight line, the wheels at the two sides are impacted independently during wheelchair detection, the simulation is more real, and the experimental data is more accurate; the two groups of jounce machines are arranged to enable the front wheels and the rear wheels of the wheelchair to be detected, and the rotating speed difference of the front wheels and the rear wheels can be realized by adjusting the rotating speeds of the front jounce machines and the rear jounce machines during detection, so that the national standard is met; through installing speed sensor on rotating device, can real-time supervision rotational speed data when making the wheelchair detect to show on data transmission to control panel, the inspector more conveniently records the detection data, improves work efficiency.

Description

Whole vehicle strength fatigue resistance testing device of wheelchair

Technical Field

The utility model relates to the technical field of wheelchair quality detection, in particular to a device for testing the strength and fatigue resistance of a whole wheelchair.

Background

The wheelchair is used as equipment for assisting mobility impaired people and disabled people to move, is a necessary transportation means for disabled people, has a wide application range, and can be used in hospitals and families. Because the wheelchair is mainly used by people with inconvenient actions or old people, certain requirements are made on the quality of the wheelchair, all manufacturers push out a wheelchair and then detect the quality and performance of all aspects of the wheelchair, and all quality and performance data can be sold on the market after being detected.

In order to ensure that the produced wheelchair meets the detection requirement of the national standard GB/T18029.8-2008, a device capable of testing the strength and fatigue resistance of the whole wheelchair is provided: the service life of the wheelchair is checked, the situation of a normal road and a ramp is simulated, the whole wheelchair is required to roll on a test bed for two weeks, the wheelchair cannot withstand the break, and the break test requirement of how long the wheelchair can withstand is as follows: the wheelchair with the dummy is fixed on a special test bed, and the eccentric height of the cam is 20 mm, the frequency is 1 Hz, and the two wheels are respectively operated for 50 ten thousand times at 180 DEG in the same phase and different phases, so that the wheelchair has no abnormal phenomena of deformation, fracture, welding off, damage and the like and can normally run.

The utility model discloses a bump testing machine for a whole wheelchair strength testing device, which is shown in a patent CN202122577411.5, and is provided with a frame, two rotating rollers, a rolling table surface, a motor and an adjusting device are arranged below the frame, a first supporting plate and a testing gap between the first supporting plates are arranged on the rolling table surface, the two rotating rollers are arranged in the testing gap, the motor is connected with the rotating rollers and is used for driving the rotating rollers to rotate in the testing gap, a second supporting plate is arranged below the first supporting plate and is used for supporting the rotating rollers, the adjusting device is arranged on one side of a supporting seat and is movably connected with the nearest rotating roller, the distance between the two rotating rollers is adjusted by moving the nearest rotating rollers forwards and backwards, and impact protrusions are distributed on the peripheries of the two rotating rollers.

Compared with the detection equipment of national standards, the bump tester of the patent requires the following defects: firstly, the impact protrusions are arranged along the length direction of the rotating roller and are uniformly distributed on the rotating roller in a cuboid shape, the installation mode of the impact protrusions can enable the wheels on two sides of the wheelchair to be impacted simultaneously every time, most of the wheels are impacted on one side in reality, and similar simulation cannot be formed with a real scene, so that detection data are inaccurate; secondly, after rotating power is provided for the two rotating rollers according to the national standard, the surface linear speed of the reference roller is 1/s, the rotating speed of the other roller is 2% -7% faster than that of the other roller, and the rotating speeds of the two rollers provided by the patent are the same, so that the detection requirement cannot be met; thirdly, a roller speed measuring device is arranged on the reference roller according to the national standard so as to intuitively record the speed value of the wheelchair, and the patent equipment cannot intuitively show the speed value.

Therefore, in order to solve the above-mentioned defect, the utility model provides a device for testing the strength and fatigue resistance of the whole wheelchair.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a device for testing the strength and fatigue resistance of a wheelchair

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a whole car intensity fatigue resistance testing arrangement of wheelchair, is including the mount that is used for fixed wheelchair, the testboard that is used for the whole car intensity test of wheelchair and the controller that is used for taking notes experimental data, the mount is installed on the testboard, the testboard is including being used for fatigue test jolt machine and the base that is used for installing jolt machine, jolt machine installs on the base, the mount is with jolt machine trilateral surrounding and having an opening, the controller is installed in mount opening one side, jolt machine including the rotating device that is used for simulating wheelchair to go, the backup pad that is used for supporting the wheelchair, be used for driving rotating device and be used for installing the bottom plate on the base, rotating device is equipped with two sets of, and two sets of rotating device movable mounting is in the backup pad both ends, the motor is installed in the backup pad bottom, be equipped with the striking piece that is used for making jolt on the rotating device, just the striking piece at backup pad both ends two sets of striking pieces on the rotating device are installed in opposite phase, are not in same straight line.

Further improvement, the rotating device comprises a crawler belt for simulating a flat ground road surface, a first roller for connecting a motor to enable the rotating device to operate, and two second rollers for supporting the crawler belt to form an inverted triangle shape, wherein the two second rollers are arranged on two sides of one end of the supporting plate, the crawler belt is sleeved on the first roller and the second roller to form an isosceles triangle, the bottom surface of the isosceles triangle faces upwards in a reversed mode, the two second rollers serve as upper vertexes of the reversed isosceles triangle, and the first roller serves as lower vertexes of the reversed isosceles triangle.

Further improved, the impact block is arranged on the track, and at least 1 impact block is arranged on the track.

In the utility model, two groups of jounce machines are arranged, and the two groups of jounce machines are arranged on the base in parallel.

Further improved, the working rotating speeds of the two groups of jounce machines can be independently adjusted, and the rotating speed of the jounce machine close to the opening side of the fixed rod is 2% -7% higher than that of the jounce machine at the inner side of the fixed rod.

In the utility model, the base is provided with the sliding device for adjusting the relative distance between the two groups of jounce machines.

Further improved, the sliding device comprises a sliding rail arranged on the base and a sliding groove used for being matched with the sliding rail to slide, the sliding groove is arranged at the bottom of the bottom plate on the jounce machine, the sliding rail is a T-shaped rail, and the sliding groove is a T-shaped groove.

In the utility model, the controller comprises a display screen for displaying data, a speed sensor for measuring the rotating speed of the crawler belt on the jounce machine and a controller for adjusting the actual power of the two groups of motors, wherein the speed sensor is arranged on the first roller and the second roller, and a control panel formed by the display and the controller is arranged on the fixed frame.

Further improved, the detection data of the speed sensor is transmitted to a display and displayed.

Compared with the prior art, the utility model has the following advantages and effects: the wheel chair is enabled to simulate the working condition of a flat road surface to be more real and reflect the actual effect when the wheel chair encounters impact of the impact blocks by arranging the caterpillar band on the rotating device for rotation and installing the impact blocks on the caterpillar band, so that the detection data is more accurate; the impact blocks on the tracks at the two ends of the supporting plate are arranged in opposite phases, so that the impact blocks at the two ends of the supporting plate are not positioned on the same straight line, the wheels at the two sides are impacted independently when the wheelchair is detected, the simulation situation is closer to reality, and experimental data are more accurate; the wheelchair is enabled to detect the front and rear wheels by arranging two groups of jounce machines, so that the rotating speed difference of the front and rear wheels can be realized by adjusting the rotating speeds of the front and rear jounce machines during detection, and the detection requirement of the national standard is met; through installing speed sensor on rotating device, make wheelchair ability real-time supervision rotational speed data when detecting to show on data transmission to control panel, make the record that inspector is more convenient detect data, improved work efficiency.

Drawings

FIG. 1 is a perspective view of a testing device according to the present embodiment;

FIG. 2 is a diagram of a testing apparatus according to the present embodiment;

fig. 3 is a front view of the rotating device in the present embodiment;

fig. 4 is a front view of the jounce machine in this embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the present utility model is not limited to the following embodiments.

Examples:

as shown in fig. 1 to 4, the embodiment discloses a whole-vehicle strength fatigue resistance testing device of a wheelchair, which comprises a fixing frame 1 for fixing the wheelchair, a testing table 2 for testing the whole-vehicle strength of the wheelchair and a controller 6 for recording experimental data, wherein the fixing frame 1 is installed on the testing table 2, the testing table 2 comprises a jounce machine 3 for fatigue resistance testing and a base 4 for installing the jounce machine 3, the jounce machine 3 is installed on the base 4, an opening is reserved on three sides of the jounce machine 3 by the fixing frame 1, the controller 6 is installed on one side of the opening of the fixing frame 1, the jounce machine 3 comprises a rotating device 31 for simulating wheelchair running, a supporting plate 32 for supporting the wheelchair, a motor 33 for driving the rotating device 31 and a base 34 for being installed on the base 4, the rotating device 31 is provided with two groups, the rotating device 31 is movably installed at two ends of the supporting plate 32, the motor 33 is installed at the bottom of the supporting plate 32, a bump block 311 for manufacturing jounce is arranged on the rotating device 31, the bump block 311 is evenly installed on the rotating device 31 at two ends of the supporting plate 32, and the two groups of bump blocks 311 are not all the same in the same place as the rotating device 31.

In the above structure, the impact blocks 311 at two ends of the supporting plate 32 are installed in opposite phases, so that the wheels at two sides of the wheelchair on the supporting plate 32 can be impacted on one side without being on the same straight line, the actual situation can be reflected, and the practical requirements are met.

Preferably, the turning device 31 includes a caterpillar band 312 for simulating a road surface, a first roller 313 for connecting a motor 33 to make the turning device 31 operate, and two second rollers 314 for supporting the caterpillar band 312 to form an inverted triangle shape, the two second rollers 314 are mounted on both sides of one end of the supporting plate 32, the caterpillar band 312 is sleeved on the first roller 313 and the second roller 314 to form an isosceles triangle, the isosceles triangle is inverted, the bottom surface of the isosceles triangle is upward, the two second rollers 314 are used as upper peaks of the inverted isosceles triangle, and the first roller 313 is a lower peak of the inverted isosceles triangle.

In the above structure, the crawler belt 312, the first roller and the second roller 314 form an inverted triangle, so that the bottom surface of the triangle is upwards used for simulating a real flat road surface, and the wheelchair is closer to the real situation when running on a plane for detection.

Preferably, the impact block 311 is mounted on the track 312, and at least 1 impact block 311 is mounted on the track 312.

In this embodiment, the bottom and the jounce machine 3 are provided with two groups, and the two groups of jounce machines 3 are installed on the base 4 in parallel.

Preferably, the working rotation speeds of the two groups of jounce machines 3 can be independently adjusted, and the rotation speed of the jounce machine 3 close to the opening side of the fixed rod is 2% -7% higher than that of the jounce machine 3 on the inner side of the fixed rod.

In the structure, the inspector can respectively adjust the rotating speeds of the rotating devices 31 on the two groups of jounce machines 3 through the control panel, so that the inspection meets the national standard.

In this embodiment, the base 4 is provided with a sliding device 5 for adjusting the relative distance between two groups of jounce machines 3, the sliding device 5 includes a sliding rail 51 installed on the base 4 and a sliding groove 52 for sliding in cooperation with the sliding rail 51, the sliding groove 52 is installed at the bottom of the bottom plate 34 on the jounce machine 3, the sliding rail 51 is a T-shaped rail, and the sliding groove 52 is a T-shaped groove.

In the above structure, the relative distance between the two jounce machines 3 is adjusted through the sliding device 5, so that the device can be suitable for wheelchairs with different wheelbases, the wheelchair can be widely applied, and the T-shaped sliding rail 51 can limit the jounce machines to slide only in the axial direction.

In this embodiment, the controller 6 includes a display screen 61 for displaying data, a speed sensor 62 for measuring the rotational speed of the crawler belt 312 on the jounce machine 3, and a controller 63 for adjusting the actual power of the two sets of motors 33, the speed sensor 62 is mounted on the first roller 313 and the second roller 314, and the display screen 61 and the controller 63 form a control panel mounted on the fixed frame 1.

Preferably, the detection data of the speed sensor 62 is transmitted to the display screen 61 and displayed.

In the above structure, the inspector can adjust the rotation speed of the two groups of jolting machines 3 through the controller 63 on the control panel, so that the rotation speeds of the front wheel and the rear wheel of the wheelchair have a certain difference value, the detection meets the national requirements, the speed sensor 62 is used for directly measuring the speed of the crawler belt 312 and transmitting the data to the control panel to be displayed through the display screen 61, and the inspector can record the data more conveniently.

The above description is merely illustrative of the utility model and those skilled in the art may make various modifications and additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a whole car intensity fatigue resistance testing arrangement of wheelchair, is including mount (1) that is used for fixed wheelchair, test bench (2) that are used for wheelchair whole car intensity test and be used for recording experimental data (6), mount (1) are installed on test bench (2), test bench (2) are including jolting machine (3) that are used for fatigue resistance test and base (4) that are used for installing jolting machine (3), jolting machine (3) are installed on base (4), mount (1) is with three sides enclosing of jolting machine (3) leave an opening, controller (6) are installed in mount (1) opening one side, its characterized in that: the jounce machine (3) comprises a rotating device (31) used for simulating wheelchair running, a supporting plate (32) used for supporting the wheelchair, a motor (33) used for driving the rotating device (31) and a bottom plate (34) used for being installed on a base (4), wherein the rotating device (31) is provided with two groups, the two groups of rotating devices (31) are movably installed at two ends of the supporting plate (32), the motor (33) is installed at the bottom of the supporting plate (32), impact blocks (311) used for manufacturing jolt are arranged on the rotating device (31), the impact blocks (311) are evenly installed on the rotating device (31), and the two groups of impact blocks (311) on the rotating device (31) at two ends of the supporting plate (32) are installed in opposite phases and are not located on the same straight line.

2. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 1, wherein: the rotating device (31) comprises a crawler belt (312) for simulating a flat ground surface, a first roller (313) for connecting a motor (33) to enable the rotating device (31) to operate, and two second rollers (314) for supporting the crawler belt (312) to form an inverted triangle shape, wherein the two second rollers (314) are arranged on two sides of one end of a supporting plate (32), the crawler belt (312) is sleeved on the first roller (313) and the second roller (314) to form an isosceles triangle, the isosceles triangle is an inverted isosceles triangle, the bottom surface of the isosceles triangle is upward, the two second rollers (314) are used as upper vertexes of the inverted isosceles triangle, and the first roller (313) is a lower vertexes of the inverted isosceles triangle.

3. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 2, wherein: the impact block (311) is arranged on the crawler belt (312), and at least 1 impact block (311) is arranged on the crawler belt (312).

4. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 1, wherein: the jounce machine (3) is provided with two groups, and the two groups of jounce machines (3) are arranged on the base (4) in parallel.

5. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 4, wherein: the working rotating speeds of the two groups of jounce machines (3) can be independently adjusted, and the rotating speed of the jounce machine (3) close to the opening side of the fixed rod is 2% -7% higher than that of the jounce machine (3) on the inner side of the fixed rod.

6. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 5, wherein: the base (4) is provided with a sliding device (5) for adjusting the relative distance between the two groups of jounce machines (3).

7. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 6, wherein: the sliding device (5) comprises a sliding rail (51) arranged on the base (4) and a sliding groove (52) matched with the sliding rail (51) to slide, and the sliding groove (52) is arranged at the bottom of a bottom plate (34) on the jounce machine (3).

8. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 7, wherein: the sliding rail (51) is a T-shaped rail, and the sliding groove (52) is a T-shaped groove.

9. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 2, wherein: the controller (6) comprises a display screen (61) for displaying data, a speed sensor (62) for measuring the rotating speed of the caterpillar band (312) on the jounce machine (3) and a controller (63) for adjusting the actual power of the two groups of motors (33), the speed sensor (62) is arranged on a first roller (313) and a second roller (314), and the display screen (61) and the controller (63) form a control panel which is arranged on the fixed frame (1).

10. The device for testing the strength and fatigue resistance of the whole wheelchair according to claim 9, wherein: the detection data of the speed sensor (62) is transmitted to a display screen (61) and displayed.