CN106950025B - Detection apparatus for wheelchair falls fatigue degree - Google Patents
Detection apparatus for wheelchair falls fatigue degree Download PDFInfo
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- CN106950025B CN106950025B CN201710203784.1A CN201710203784A CN106950025B CN 106950025 B CN106950025 B CN 106950025B CN 201710203784 A CN201710203784 A CN 201710203784A CN 106950025 B CN106950025 B CN 106950025B
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- wheelchair
- supporting column
- transmission shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- General Physics & Mathematics (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a detection device for fall fatigue of a wheelchair, which comprises a rack and a main cylinder arranged on the rack, wherein the main cylinder is used for driving a mechanical arm, a workbench is arranged below the mechanical arm, a boosting cylinder is arranged on the workbench, the power output direction of the boosting cylinder is opposite to the lifting direction of the wheelchair, the boosting cylinder is used for offsetting the upward inertia of the wheelchair, a rigid structure is arranged below the workbench, a plurality of clamping wheels are arranged on the bottom surface of the rigid structure, the clamping wheels are connected with the wheelchair through steel wire ropes, a bottom plate is arranged at the bottom of the rack, rolling wheels are arranged on the bottom plate, and are used for bearing the impact of wheels of the wheelchair and can drive the wheels of the wheelchair to rotate after the wheelchair falls down; and a photoelectric counter is also arranged at the bottom of the frame and used for counting the falling times of the wheelchair.
Description
Technical Field
The invention relates to the field of detection of rehabilitation appliances, in particular to a device for detecting the falling fatigue of a wheelchair.
Background
The wheelchair is an important tool for rehabilitation, not only is the tool for physically disabled and mobility-handicapped people to ride instead of walk, but also is more important for the people to do physical exercises and participate in social activities by means of the wheelchair.
When in use, the wheelchair is often lifted and put into a vehicle such as an automobile. If the drop resistance of the wheelchair is poor, the wheelchair can be damaged, and even a user can be damaged. Therefore, the wheelchair needs to be subjected to drop strength detection before being shipped out of a factory so as to ensure safety.
According to the national standard GB18029.8-2008, part 8 of the wheelchair: the requirements of static strength, impact strength and fatigue strength and the related requirements of a test method are that the detection device needs to perform the following tests on the wheelchair: the wheelchair is repeatedly dropped onto a rigid horizontal test platform for 6666 times from a height of 50mm +5mm to evaluate the anti-falling performance of the wheelchair.
In order to solve the problems, a patent application document with the application number of 201310118058.1 discloses a device for testing the falling strength of a wheelchair, which comprises a testing platform, a supporting frame, a driving motor, a cam mechanism, a guide post mechanism, a driving plate, a nylon binding belt for tying the wheelchair and an infrared counter. The detection process comprises the following steps: after the wheelchair is placed on the test platform and connected with the nylon binding bands, the motor is started, and the whole device drives the wheelchair to rise and fall according to the mechanical transmission principle, so that the detection function is automatically realized.
However, this solution also has the following disadvantages:
1. in the detection process of the wheel of the wheelchair, when the wheel falls, the contact point of the wheel and the test platform is always the same, so that the detection result is limited.
2. When the guide post mechanism and the cam mechanism are disengaged, the wheelchair does not completely fall freely when falling, and therefore, the detection result has errors.
3. Adopt four nylon bandage connection wheelchair and driving plate, because there is the error when the nylon bandage is connected to the manual work, lead to the wheel of wheelchair not at same horizontal plane, the wheel can't fall to the ground simultaneously when falling, influences the testing result.
Disclosure of Invention
The invention aims to provide a device for detecting the falling fatigue of a wheelchair, aiming at overcoming the defects in the prior art and solving the problems in the prior art.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a device for detecting the falling fatigue of a wheelchair comprises a rack, wherein the rack comprises a bottom plate for bearing impact of the wheelchair, a first supporting column and a second supporting column are arranged on one side of the bottom plate, a third supporting column and a fourth supporting column which are opposite to the first supporting column and the second supporting column are arranged on the other side of the bottom plate, top plates are arranged at the top ends of the first supporting column, the second supporting column, the third supporting column and the fourth supporting column, and a main cylinder is fixedly arranged on the top surface of each top plate;
the output end of the main cylinder is connected with and drives a first mechanical arm and a second mechanical arm, a workbench is arranged below the first mechanical arm and the second mechanical arm, a boosting cylinder is respectively arranged on the left side and the right side of the top surface of the workbench, the power output direction of the boosting cylinder is opposite to the lifting direction of the wheelchair, the boosting cylinder is used for offsetting the upward inertia of the wheelchair, and a group of shaft holes are formed in the workbench;
a rigid structure is arranged below the workbench, a first transmission shaft and a second transmission shaft are arranged on the rigid structure, one ends of the first transmission shaft and the second transmission shaft are fixedly connected with the rigid structure, the other ends of the first transmission shaft and the second transmission shaft penetrate through the workbench through shaft holes, grabbing structures matched with the first manipulator and the second manipulator are arranged at the other ends of the first transmission shaft and the second transmission shaft, and each grabbing structure comprises a left vertical plate, a right vertical plate and a connecting shaft positioned between the left vertical plate and the right vertical plate; the rigid body structure can be grabbed by the first mechanical arm and the second mechanical arm to move upwards;
the device comprises a rigid body structure, a steel wire rope, a clamping wheel, a lock catch and a wheelchair, wherein the clamping wheel is respectively arranged at four corner positions of the bottom surface of the rigid body structure, the steel wire rope is connected onto the clamping wheel, one end of the steel wire rope is fixedly connected onto the clamping wheel, the other end of the steel wire rope is provided with the lock catch, and the lock catch is used for adjusting the height of the joint of the steel wire rope and the wheelchair to enable the wheels of the wheelchair to be at the same height;
the bottom plate is positioned below the wheelchair, the upper surface of the bottom plate is provided with a group of idler wheels, and the idler wheels are used for bearing the impact of the wheels of the wheelchair and can drive the wheels of the wheelchair to rotate after the wheelchair falls; and a photoelectric counter is also arranged at the bottom of the frame and used for counting the falling times of the wheelchair.
The air pump is provided with a first output port and a second output port, the first output port is connected with the main cylinder and provides an air source for the main cylinder, and the second output port is connected with the boosting cylinder and provides an air source for the boosting cylinder.
The wheelchair further comprises a control console, wherein the control console is provided with a touch screen and a function button, the touch screen is used for setting the times of testing the control information display wheelchair, and the function button is used for controlling a switch of a testing action.
Compared with the prior art, the invention has the following beneficial effects:
1. the rollers are arranged on the bottom plate, so that the wheels of the wheelchair are driven to rotate after falling every time, and the impact of falling the wheels every time is prevented from acting on the same part.
2. The height of the connecting point of the wheelchair and the wheel chair is adjusted by adopting the lock catch, so that the wheels of the wheelchair are positioned at the same horizontal height, and all the wheels are ensured to be simultaneously grounded when the wheelchair falls down each time.
3. The wheelchair is ensured to keep a free falling state before falling each time by arranging the boosting cylinder driven reversely.
Drawings
Fig. 1 is a schematic view of a wheelchair falling fatigue detection device.
Fig. 2 is a schematic view of the upper part of the wheelchair falling fatigue detection device.
Fig. 3 is a schematic view of the lower half part of the wheelchair falling fatigue degree detection device.
The reference numbers in the figures illustrate: the device comprises a rack 1, a bottom plate 2, a first supporting column 3, a second supporting column 4, a third supporting column 5, a fourth supporting column 6, a top plate 7, a main cylinder 8, a first manipulator 9, a second manipulator 10, a workbench 11, a rigid body structure 12, a first transmission shaft 13, a second transmission shaft 14, a clamping wheel 15, a boosting cylinder 17 and a photoelectric counter 19.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, 2 and 3, the device for detecting the falling fatigue of the wheelchair comprises a frame 1, wherein the frame 1 comprises a bottom plate 2 for bearing impact of the wheelchair, a first supporting column 3 and a second supporting column 4 are arranged on one side of the bottom plate 2, a third supporting column 5 and a fourth supporting column 6 opposite to the first supporting column 3 and the second supporting column 4 are arranged on the other side of the bottom plate 2, a top plate 7 is mounted at the top ends of the first supporting column 3, the second supporting column 4, the third supporting column 5 and the fourth supporting column 6, and a main cylinder 8 is fixedly mounted on the top surface of the top plate 7;
the output end of the main cylinder 8 is connected with and drives a first manipulator 9 and a second manipulator 10, a workbench 11 is arranged below the first manipulator 9 and the second manipulator 10, a boosting cylinder 17 is respectively arranged on the left side and the right side of the top surface of the workbench 11, the power output direction of the boosting cylinder 17 is opposite to the lifting direction of the wheelchair, the boosting cylinder 17 is used for offsetting the upward inertia of the wheelchair, and a group of shaft holes are formed in the workbench 11;
a rigid structure 12 is arranged below the workbench 11, a first transmission shaft 13 and a second transmission shaft 14 are arranged on the rigid structure 12, one ends of the first transmission shaft 13 and the second transmission shaft 14 are fixedly connected with the rigid structure 12, the other ends of the first transmission shaft 13 and the second transmission shaft 14 penetrate through the workbench 11 through shaft holes, grabbing structures matched with the first manipulator 9 and the second manipulator 10 are arranged at the other ends of the first transmission shaft 13 and the second transmission shaft 14, and each grabbing structure comprises a left vertical plate, a right vertical plate and a connecting shaft positioned between the left vertical plate and the right vertical plate; the rigid body structure 12 can be grabbed by the first manipulator 9 and the second manipulator 10 and moved upwards;
the bottom plate 2 is positioned below the wheelchair, a group of idler wheels are arranged on the upper surface of the bottom plate 2, and the idler wheels are used for bearing the impact of the wheels of the wheelchair and can drive the wheels of the wheelchair to rotate after the wheelchair falls; and a photoelectric counter 19 is also arranged at the bottom of the frame 1, and the photoelectric counter 19 is used for counting the falling times of the wheelchair.
In addition, the invention also comprises an air pump, wherein the air pump is provided with a first output port and a second output port, the first output port is connected with the main air cylinder 8 and provides an air source for the main air cylinder 8, and the second output port is connected with the boosting air cylinder 17 and provides an air source for the boosting air cylinder 17.
The wheelchair further comprises a console, wherein the console is provided with a touch screen and a function button, the touch screen is used for setting the times of testing of the control information display wheelchair, and the function button is used for controlling a switch of a testing action.
The detection process of the invention is as follows:
firstly, a wheelchair to be detected is placed on a bottom plate of a support, then a counter weight dummy is placed on the wheelchair, the wheelchair is fixed on a rack through clamping wheels, a steel wire rope, an adjusting block and lock catches, the height of the wheelchair is adjusted through adjusting four lock catches, and all wheels of the wheelchair are fixed on the same horizontal plane
And then starting a main cylinder, wherein the main cylinder provides power for the up-and-down action and the grabbing action of the manipulator, and the manipulator grabs a grabbing structure of a rigid body structure connected with the wheelchair and upwards lifts the wheelchair. When the wheelchair is close to the top, the boosting cylinders on the left side and the right side of the workbench are started, the pistons extend out, and a downward force is given to offset the inertia of upward movement, so that preparation is provided for the free-fall movement of the wheelchair when the wheelchair falls.
When the wheelchair reaches the top position, the manipulator is loosened to release the rigid structure and the wheelchair, and the rigid structure, the wheelchair and the wheelchair fall. Every time the device falls, the photoelectric counter counts 1 time and displays the number on the touch screen. Meanwhile, the roller on the bottom plate drives the wheel of the wheelchair to rotate once, so that the impact of falling the wheel each time is prevented from acting on the same part.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A device for detecting the falling fatigue of a wheelchair comprises a rack (1), wherein the rack (1) comprises a bottom plate (2) for bearing the impact of the wheelchair, a first supporting column (3) and a second supporting column (4) are arranged on one side of the bottom plate (2), a third supporting column (5) and a fourth supporting column (6) opposite to the first supporting column (3) and the second supporting column (4) are arranged on the other side of the bottom plate (2), a top plate (7) is arranged at the top ends of the first supporting column (3), the second supporting column (4), the third supporting column (5) and the fourth supporting column (6), and a main cylinder (8) is fixedly arranged on the top surface of the top plate (7);
the method is characterized in that: the output end of the main cylinder (8) is connected with and drives a first mechanical arm (9) and a second mechanical arm (10), a workbench (11) is installed below the first mechanical arm (9) and the second mechanical arm (10), a boosting cylinder (17) is installed on each of the left side and the right side of the top surface of the workbench (11), the power output direction of the boosting cylinder (17) is opposite to the lifting direction of the wheelchair, the boosting cylinder (17) is used for offsetting upward inertia of the wheelchair, and a group of shaft holes are formed in the workbench (11);
a rigid body structure (12) is arranged below the workbench (11), a first transmission shaft (13) and a second transmission shaft (14) are arranged on the rigid body structure (12), one ends of the first transmission shaft (13) and the second transmission shaft (14) are fixedly connected with the rigid body structure (12), the other ends of the first transmission shaft (13) and the second transmission shaft (14) penetrate through the workbench (11) through shaft holes, grabbing structures matched with the first manipulator (9) and the second manipulator (10) are arranged at the other ends of the first transmission shaft (13) and the second transmission shaft (14), and each grabbing structure comprises a left vertical plate, a right vertical plate and a connecting shaft positioned between the left vertical plate and the right vertical plate; the rigid body structure (12) can grab the grabbing structure to move upwards through a first mechanical hand (9) and a second mechanical hand (10);
four corner positions of the bottom surface of the rigid body structure (12) are respectively provided with a clamping wheel (15), the clamping wheel (15) is connected with a steel wire rope, one end of the steel wire rope is fixedly connected to the clamping wheel (15), the other end of the steel wire rope is provided with a lock catch, and the lock catch is used for adjusting the height of the joint of the steel wire rope and the wheelchair vehicle, so that the wheels of the wheelchair vehicle are at the same height;
the bottom plate (2) is positioned below the wheelchair, a group of idler wheels are arranged on the upper surface of the bottom plate (2), and the idler wheels are used for bearing the impact of the wheels of the wheelchair and can drive the wheels of the wheelchair to rotate after the wheelchair falls; a photoelectric counter (19) is further mounted at the bottom of the frame (1), and the photoelectric counter (19) is used for counting falling times of the wheelchair;
the air pump is provided with a first output port and a second output port, the first output port is connected with the main air cylinder (8) and provides an air source for the main air cylinder (8), and the second output port is connected with the boosting air cylinder (17) and provides an air source for the boosting air cylinder (17);
the wheelchair testing device is characterized by further comprising a control console, wherein the control console is provided with a touch screen and function buttons, the touch screen is used for setting the times of testing of the control information display wheelchair, and the function buttons are used for controlling the switch of the testing action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203784.1A CN106950025B (en) | 2017-03-30 | 2017-03-30 | Detection apparatus for wheelchair falls fatigue degree |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203784.1A CN106950025B (en) | 2017-03-30 | 2017-03-30 | Detection apparatus for wheelchair falls fatigue degree |
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| Publication Number | Publication Date |
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| CN106950025A CN106950025A (en) | 2017-07-14 |
| CN106950025B true CN106950025B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710203784.1A Active CN106950025B (en) | 2017-03-30 | 2017-03-30 | Detection apparatus for wheelchair falls fatigue degree |
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| CN (1) | CN106950025B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645588A (en) * | 2018-08-14 | 2018-10-12 | 河北沃克曼数控机械有限公司 | Heavily loaded wheel-chair falls fatigue tester |
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|---|---|---|---|---|
| JPH11221250A (en) * | 1998-02-06 | 1999-08-17 | Futaba Sangyo Kk | Impact-durability testing device for wheelchair |
| UA81949C2 (en) * | 2005-11-07 | 2008-02-25 | Украинский Научно-Исследовательский Институт Протезирования, Протезостроения И Восстановления Трудоспособности | Appliance for testing wheel-chairs on strength after fall |
| CN201993219U (en) * | 2011-03-31 | 2011-09-28 | 东莞市恒宇仪器有限公司 | Drop test machine of two-wheel electric vehicle |
| CN102721547A (en) * | 2012-06-11 | 2012-10-10 | 国家康复辅具研究中心 | Wheel-type stair climbing wheelchair fatigue testing machine |
| CN103149102A (en) * | 2011-12-06 | 2013-06-12 | 上海理工大学 | Impact strength testing device for wheelchair |
| CN104655386A (en) * | 2015-01-29 | 2015-05-27 | 嘉瑞福(浙江)家具有限公司 | Full-automatic control chair seat impact resistance test device and test method |
| CN106370439A (en) * | 2016-09-23 | 2017-02-01 | 丹阳市鑫泰医疗器材有限公司 | Walking aiding wheelchair fatigue testing machine |
| CN206804255U (en) * | 2017-03-30 | 2017-12-26 | 上海健康医学院 | A kind of wheel-chair falls the detection means of fatigue strength |
-
2017
- 2017-03-30 CN CN201710203784.1A patent/CN106950025B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11221250A (en) * | 1998-02-06 | 1999-08-17 | Futaba Sangyo Kk | Impact-durability testing device for wheelchair |
| UA81949C2 (en) * | 2005-11-07 | 2008-02-25 | Украинский Научно-Исследовательский Институт Протезирования, Протезостроения И Восстановления Трудоспособности | Appliance for testing wheel-chairs on strength after fall |
| CN201993219U (en) * | 2011-03-31 | 2011-09-28 | 东莞市恒宇仪器有限公司 | Drop test machine of two-wheel electric vehicle |
| CN103149102A (en) * | 2011-12-06 | 2013-06-12 | 上海理工大学 | Impact strength testing device for wheelchair |
| CN102721547A (en) * | 2012-06-11 | 2012-10-10 | 国家康复辅具研究中心 | Wheel-type stair climbing wheelchair fatigue testing machine |
| CN104655386A (en) * | 2015-01-29 | 2015-05-27 | 嘉瑞福(浙江)家具有限公司 | Full-automatic control chair seat impact resistance test device and test method |
| CN106370439A (en) * | 2016-09-23 | 2017-02-01 | 丹阳市鑫泰医疗器材有限公司 | Walking aiding wheelchair fatigue testing machine |
| CN206804255U (en) * | 2017-03-30 | 2017-12-26 | 上海健康医学院 | A kind of wheel-chair falls the detection means of fatigue strength |
Non-Patent Citations (1)
| Title |
|---|
| 从GB/T12996-2012解读电动轮椅车的性能要求及检测;邢立镛 等;《中国医疗器械信息》;第21卷(第12期);全文 * |
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