CN210221683U - Instrument for testing pressure resistance of crutch strut - Google Patents
Instrument for testing pressure resistance of crutch strut Download PDFInfo
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- CN210221683U CN210221683U CN201920716973.3U CN201920716973U CN210221683U CN 210221683 U CN210221683 U CN 210221683U CN 201920716973 U CN201920716973 U CN 201920716973U CN 210221683 U CN210221683 U CN 210221683U
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Abstract
The utility model discloses an instrument for testing the pressure resistance of a crutch strut, which particularly relates to the detection field and comprises a horizontal clamping device and a pressing device; the horizontal clamping device comprises a slide rail seat, a first fixed seat and a second fixed seat, wherein the first fixed seat and the second fixed seat are slidably arranged on the slide rail seat; a fixed block is arranged at the upper end of the first fixed seat, and a fixed baffle is fixedly and horizontally connected to one end of the fixed block, which is back to the first fixed seat; the first fixing seat is provided with two connecting rods and a third fixing seat used for fixing the free end of the crutch grab handle, the connecting rods are respectively arranged on two sides of the third fixing seat, and the third fixing seat is connected with the connecting rods in a sliding manner; the first fixing seat is also provided with a driving device which is used for driving the third fixing seat to move upwards so that one side of the crutch grab handle back to the free end is tightly abutted and fixed with the fixing baffle. The utility model discloses can horizontally fix the clamping walking stick and can exert the ascending power of perpendicular to walking stick direction to the walking stick.
Description
Technical Field
The utility model relates to a detection area specifically is an instrument for testing walking stick pillar resistance to pressure.
Background
The crutch generally comprises a support and a grab handle, and users of the crutch are mostly elderly people or disabled people with inconvenient actions. For the test of the performance of the crutch, japan sets a CPSA 0073 standard, and the elderly who are exported to japan are required to pass the test corresponding to the standard when using the crutch. The standard test requirements are: the grip was fixed and a force of 130N was applied from a position 300mm from the mounting position to ensure that the test direction was at right angles to the support for 1 minute. If the handle and the support are not damaged or fall off and the deformation affecting the use is not generated, the standard is met.
In the prior art, an inspector generally holds a crutch by hand and applies pressure with a corresponding force value to a corresponding part of the crutch to perform a test. However, the above operation has the following problems: (1) in the test, the crutch grab handle and the support cannot be ensured to be in a horizontal state. (2) The direction of the applied pressure can not be ensured to be vertical to the crutch, and the test precision can not meet the requirement of the Japanese CPSA 0073 standard. Therefore, it is a desirable problem to provide a testing apparatus that can solve the above two problems simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model provides an instrument for testing walking stick pillar pressure resistance, but this instrument level fixed clamping walking stick and can exert the ascending power of perpendicular to walking stick direction to the walking stick.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the instrument for testing the pressure resistance of the crutch strut comprises a horizontal clamping device for fixing the crutch and a pressure applying device for applying pressure in the vertical direction to the crutch strut; the horizontal clamping device comprises a slide rail seat, a first fixed seat for horizontally fixing a crutch grab handle and a second fixed seat for horizontally fixing a crutch strut, wherein the first fixed seat and the second fixed seat are both arranged on the slide rail seat in a sliding manner; a fixed block is arranged at the upper end of the first fixed seat, and a fixed baffle is fixedly and horizontally connected to one end, back to the first fixed seat, of the fixed block; the first fixing seat is provided with two connecting rods and a third fixing seat used for fixing the free end of the crutch grab handle, the connecting rods are respectively arranged on two sides of the third fixing seat, and the third fixing seat is connected with the connecting rods in a sliding manner; the first fixing seat is also provided with a driving device which is used for driving the third fixing seat to move upwards so that one side of the crutch grab handle back to the free end is tightly abutted and fixed with the fixing baffle.
Preferably, the third fixing seat comprises a sliding plate and a bearing plate, the sliding plate and the bearing plate are fixedly connected at an included angle of 90 degrees, correspondingly, two connecting rods are respectively provided with a sliding groove matched with the sliding plate, and the bearing plate is provided with a fixing mechanism for fixing the free end of the grab handle.
Preferably, the fixing mechanism comprises two fixing parts, each fixing part comprises a first fixing head, a second fixing head which is in contact with the crutch grab handle and an elastic part, and the crutch grab handle is fixedly clamped between the two second fixing heads.
Preferably, the driving device comprises a sliding connection plate, a reciprocating elastic piece, a fixed connecting rod, a transmission plate, a driving gear and a rotating connecting rod; the fixed block and the first fixed seat are respectively provided with a sliding chute which is matched with the sliding connecting plate and is penetrated by the sliding connecting plate in a sliding way, one end of the reciprocating elastic piece is fixed with the sliding connecting plate, and the other end of the reciprocating elastic piece is fixed below the fixed baffle; the fixed block is provided with a through groove matched with the motion path of the fixed connecting rod, the through groove is communicated with the sliding groove, one end of the fixed connecting rod is fixed with the sliding connecting plate, and the other end of the fixed connecting rod is fixed with the transmission plate; one end of the transmission plate, which is back to the fixed connecting rod, is provided with a first tooth part meshed with the driving gear, and one end of the sliding plate, which faces the driving gear, is provided with a second tooth part meshed with the driving gear; one end of the rotating connecting rod is fixed with the side end of the fixing block, and the other end of the rotating connecting rod is rotatably connected with the driving gear.
Preferably, the second fixing seat is provided with a supporting block, one end of the supporting block, which is back to the second fixing seat, is hinged with a positioning head which is in contact with and tightly abutted against the crutch pillar, the positioning head is provided with a positioning groove matched with the crutch pillar, and the supporting block and the positioning head are fixed through a locking screw.
Preferably, the pressing device comprises a propelling mechanism and a pressure head, and the pressure head is fixed with the output end of the propelling mechanism.
Preferably, the instrument further comprises a torsion device for testing the transverse torsion-resistant angle of the crutch, the torsion device comprises a servo motor, a plug-in fixing head and a rotating bearing, an insertion slot for inserting the crutch support is formed in the output end of the servo motor, the plug-in fixing head is rotatably connected with the output end of the servo motor through the rotating bearing, and a fixing hole for inserting the slide rail seat is formed in the plug-in fixing head.
Preferably, the instrument further comprises a positioning seat and a supporting and fixing rod, wherein the positioning seat is provided with a sliding seat, one end of the supporting and fixing rod is fixed with the sliding rail seat, and the other end of the supporting and fixing rod is connected with the inner side wall of the sliding seat in a sliding mode.
Preferably, one end of the supporting and fixing rod, which faces away from the slide rail seat, is provided with a slide block, and correspondingly, the slide rail seat is provided with a slide groove matched with the slide block.
Preferably, the lower end of the sliding connection plate is provided with a force application ring which is convenient for a tester to apply force.
The beneficial effects of this utility do:
in the utility model, the technician can install and fix the crutch handle to be tested on the first fixing seat in advance, and the crutch strut is fixed through the second fixing seat. Because the upper end of the first fixed seat is provided with the horizontal fixed baffle, the position of the crutch grab handle can be corrected to be in a horizontal state. Meanwhile, the pressure resistance of the crutch can be tested by applying pressure to the crutch pillar in the vertical direction through the pressure applying device. Through the use of the above-described instrumentation, the operation can be further standardized, performing as per the method in the CPSA 0073 standard.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for testing the pressure resistance of a crutch strut in an embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of an apparatus for testing the pressure resistance of a crutch strut in an embodiment;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a schematic partial structural diagram of an apparatus for testing the pressure resistance of a crutch strut in an embodiment;
FIG. 6 is an enlarged view of the portion C of FIG. 5;
fig. 7 is an enlarged view of a portion D in fig. 5.
In the figure: 1. positioning seat, 11, sliding seat, 16, pressure head, 2, supporting fixed rod, 21, slider, 31, sliding rail seat, 32, second fixed seat, 33, first fixed seat, 330, fixed block, 34, fixed baffle, 35, reciprocating elastic element, 36, sliding connection board, 360, force application ring, 37, fixed connection rod, 38, transmission board, 39, rotating connection rod, 40, drive gear, 41, connection rod, 410, sliding groove, 42, sliding board, 43, bearing board, 44, second fixed head, 45, first fixed head, 46, elastic element, 47, supporting block, 48, positioning head, 480, positioning groove, 49, locking screw, 5, servo motor, 510, slot, 52, plug-in fixed head.
Detailed Description
The embodiment provides a technical scheme:
as shown in fig. 1 to 7, the apparatus for testing the pressure resistance of the crutch strut includes a horizontal clamping device for fixing the crutch and a pressing device for applying a vertical pressure to the crutch strut; the horizontal clamping device comprises a slide rail seat 31, a first fixed seat 33 for horizontally fixing the crutch grab handle and a second fixed seat 32 for horizontally fixing the crutch strut, wherein the first fixed seat 33 and the second fixed seat 32 are both slidably arranged on the slide rail seat 31; a fixed block 330 is arranged at the upper end of the first fixed seat 33, and a fixed baffle 34 is fixedly and horizontally connected to one end, back to the first fixed seat 33, of the fixed block 330; the first fixing seat 33 is provided with two connecting rods 41 and a third fixing seat for fixing the free end of the crutch grab handle, the connecting rods 41 are respectively arranged at two sides of the third fixing seat, and the third fixing seat is connected with the connecting rods 41 in a sliding manner; the first fixing seat 33 is further provided with a driving device for driving the third fixing seat to move upwards so that one side of the crutch grip, which is back to the free end, is tightly abutted and fixed with the fixing baffle 34.
The utility model discloses in, the technical staff can fix the installation of the walking stick grab handle that needs the test on first fixing base in advance, and the walking stick pillar is fixed through the second fixing base. Because the upper end of the first fixed seat is provided with the horizontal fixed baffle, the position of the crutch grab handle can be corrected to be in a horizontal state. Meanwhile, the pressure resistance of the crutch can be tested by applying pressure to the crutch pillar in the vertical direction through the pressure applying device.
In order to facilitate the installation of technicians, a gap is reserved between the third fixing seat and the lower end of the fixing baffle, and the crutch grab handle can be installed by the technicians at the moment. After the installation and fixation of the crutch grab handle are completed, a technician can adjust the position of the third fixing seat through the driving device, so that the upper end of the crutch grab handle is tightly abutted to the fixing baffle 34 to realize horizontal fixation.
As shown in fig. 2, the third fixing seat includes a sliding plate 42 and a bearing plate 43, the sliding plate 42 and the bearing plate 43 are fixedly connected with each other at an included angle of 90 °, accordingly, both the connecting rods 41 are provided with a sliding groove 410 adapted to the sliding plate 42, and the bearing plate 43 is provided with a fixing mechanism for fixing the free end of the handle.
As shown in fig. 2 and 6, the fixing mechanism includes two fixing members, each of which includes a first fixing head 45, a second fixing head 44 contacting with the crutch grip, and an elastic member 46, and the crutch grip is fixedly clamped between the two second fixing heads 44. During installation, the technician may push on the first and second fixed heads 45, 44, causing the elastic member 46 (spring) to contract, thereby reserving a space for the cane grip to fit into. When the technician inserts the crutch grab handle, the hand can be loosened. The two second fixing heads 44 can clamp and fix the crutch handle under the action of the elastic member 46.
As shown in fig. 2, the driving means includes a slide coupling plate 36, a reciprocating elastic member 35, a fixed connection rod 37, a transmission plate 38, a driving gear 40, and a rotating connection rod 39; the fixed block 330 and the first fixed seat 33 are both provided with sliding chutes which are matched with the sliding connecting plate 36 to be penetrated in a sliding way, one end of the reciprocating elastic piece 35 is fixed with the sliding connecting plate 36, and the other end is fixed below the fixed baffle 34; the fixed block 330 is provided with a through groove adapted to the movement path of the fixed connecting rod 37, the through groove is communicated with the through groove, one end of the fixed connecting rod 37 is fixed with the sliding connecting plate 36, and the other end is fixed with the transmission plate 38; one end of the transmission plate 38, which is back to the fixed connecting rod 37, is provided with a first tooth part meshed with the driving gear 40, and one end of the sliding plate 42, which faces the driving gear 40, is provided with a second tooth part meshed with the driving gear 40; one end of the rotating connecting rod 39 is fixed to the side end of the fixing block 330, and the other end is rotatably connected to the driving gear 40.
After the technician finishes the installation, the sliding connection plate 36 is pulled down to stretch the reciprocating elastic member 35 (spring), and at this time, the transmission plate 38 also moves down to drive the driving gear 40 to rotate. Since the driving gear 40 is also engaged with the slide plate 42. Therefore, when the driving gear 40 rotates, the sliding plate 42 moves up and down, so that the top end of the crutch shaft can be driven to abut against and be fixed on the fixed baffle 34.
As shown in fig. 4, a supporting block 47 is disposed on the second fixing base 32, a positioning head 48 contacting and abutting against the crutch post is hinged to one end of the supporting block 47 opposite to the second fixing base 32, the positioning head 48 is provided with a positioning slot 480 matching with the crutch post, and the supporting block 47 and the positioning head 48 are fixed by a locking screw 49. Due to the crutches with different specifications, the sizes of the grab handles are different. After the technician adjusts the first fixing seat and the second fixing seat, the first fixing seat and the second fixing seat can be fixed by bolts. The technician may fix the cane legs by adjusting the position of the alignment head 48.
As shown in fig. 1, the pressing device includes a pushing mechanism and a pressing head 16, and the pressing head 16 is fixed to an output end of the pushing mechanism. The pushing mechanism mentioned in this embodiment may be a tensile tester or an air cylinder, and preferably a tensile tester.
As shown in fig. 3, the present embodiment further includes a torsion device for testing the transverse torsion-resistant angle of the crutch, the torsion device includes a servo motor 5, a plug-in fixing head 52 and a rotating bearing, an output end of the servo motor 5 is provided with a slot 510 for inserting the crutch support, the plug-in fixing head 52 is rotatably connected with an output end 51 of the servo motor 5 through the rotating bearing, and the plug-in fixing head 52 is provided with a fixing hole for inserting the slide rail seat 31.
As shown in fig. 7, the device further includes a positioning seat 1 and a supporting and fixing rod 2, wherein the positioning seat 1 is provided with a sliding seat 11, one end of the supporting and fixing rod 2 is fixed to the sliding rail seat 31, and the other end is slidably connected to the inner side wall of the sliding seat 11. The end of the supporting and fixing rod 2 opposite to the slide rail seat 31 is provided with a slide block 21, and correspondingly, the slide seat 11 is provided with a slide groove matched with the slide block 21.
In order to test whether the twistable angle of the crutch strut meets the requirement. The technician may push the rail seat 31 so that its end is inserted into the mounting hole of the bayonet mount 52 and the free end of the crutch post is simultaneously inserted into the slot 510. When the servo motor rotates according to a preset angle, the torsion resistance of the crutch can be tested.
As shown in fig. 1, the lower end of the sliding connection plate 36 is provided with a force application ring 360 for facilitating the force application of the inspector.
The method for testing by using the instrument comprises the following steps: confirm the installation position 300mm of walking stick as the test point, adjust the walking stick test point and just in time be in the below of tensile test machine pressure head, adjust clamping device and fix the walking stick sample and keep the horizontality, drive the top motion in the vertical direction through tensile test machine, adopt the big power value of 130N, carry out the pressure test to the installation position 300mm department of walking stick, test time 1 minute.
Claims (10)
1. The instrument for testing the pressure resistance of the crutch strut is characterized by comprising a horizontal clamping device for fixing the crutch and a pressing device for applying vertical pressure to the crutch strut;
the horizontal clamping device comprises a slide rail seat (31), a first fixing seat (33) for horizontally fixing a crutch grab handle and a second fixing seat (32) for horizontally fixing a crutch strut, wherein the first fixing seat (33) and the second fixing seat (32) are both slidably arranged on the slide rail seat (31);
a fixed block (330) is arranged at the upper end of the first fixed seat (33), and a fixed baffle (34) is fixedly and horizontally connected to one end, back to the first fixed seat (33), of the fixed block (330);
the first fixing seat (33) is provided with two connecting rods (41) and a third fixing seat for fixing the free end of the grab handle of the crutch, the connecting rods (41) are respectively arranged on two sides of the third fixing seat, and the third fixing seat is connected with the connecting rods (41) in a sliding manner;
the first fixing seat (33) is also provided with a driving device for driving the third fixing seat to move upwards so that one side of the crutch grab handle back to the free end is tightly abutted and fixed with the fixed baffle (34).
2. The apparatus for testing the pressure resistance of crutch supports according to claim 1, wherein the third fixing seat comprises a sliding plate (42) and a bearing plate (43), the sliding plate (42) and the bearing plate (43) are fixedly connected at an included angle of 90 °, and accordingly, both of the connecting rods (41) are provided with a sliding groove (410) adapted to the sliding plate (42), and the bearing plate (43) is provided with a fixing mechanism for fixing the free end of the grip.
3. The apparatus for testing the pressure resistance of a crutch strut of claim 2 wherein the fixing mechanism comprises two fixing members, each fixing member comprising a first fixing head (45), a second fixing head (44) in contact with a crutch grip, and an elastic member (46), the crutch grip being fixedly clamped between the two second fixing heads (44).
4. The apparatus for testing the pressure resistance of crutch struts according to claim 2 wherein said drive means comprises a sliding connection plate (36), a reciprocating elastic member (35), a fixed connection rod (37), a transmission plate (38), a drive gear (40) and a rotating connection rod (39);
the fixed block (330) and the first fixed seat (33) are respectively provided with a sliding chute which is matched with the sliding connection plate (36) to be penetrated in a sliding way, one end of the reciprocating elastic piece (35) is fixed with the sliding connection plate (36), and the other end of the reciprocating elastic piece is fixed below the fixed baffle (34);
the fixed block (330) is provided with a through groove matched with the motion path of the fixed connecting rod (37), the through groove is communicated with the sliding groove, one end of the fixed connecting rod (37) is fixed with the sliding connecting plate (36), and the other end of the fixed connecting rod is fixed with the transmission plate (38);
one end of the transmission plate (38), which is back to the fixed connecting rod (37), is provided with a first tooth part meshed with the driving gear (40), and one end of the sliding plate (42), which faces the driving gear (40), is provided with a second tooth part meshed with the driving gear (40);
one end of the rotating connecting rod (39) is fixed with the side end of the fixed block (330), and the other end of the rotating connecting rod is rotatably connected with the driving gear (40).
5. The apparatus for testing the pressure resistance of the crutch post according to claim 1, wherein a supporting block (47) is disposed on the second fixing base (32), a positioning head (48) contacting and abutting against the crutch post is hinged to one end of the supporting block (47) facing away from the second fixing base (32), the positioning head (48) is provided with a positioning groove (480) adapted to the crutch post, and the supporting block (47) and the positioning head (48) are fixed by a locking screw (49).
6. The apparatus for testing the pressure resistance of a crutch strut of claim 1 wherein the pressure applying device comprises a propulsion mechanism and a ram (16), the ram (16) being fixed to the output end of the propulsion mechanism.
7. The apparatus for testing the pressure resistance of the crutch post according to claim 1, further comprising a torsion device for testing the transverse torsion resistance angle of the crutch, wherein the torsion device comprises a servo motor (5), a plug-in fixing head (52) and a rotating bearing, the output end of the servo motor (5) is provided with a slot (510) for inserting the crutch post, the plug-in fixing head (52) is rotatably connected with the output end (51) of the servo motor (5) through the rotating bearing, and the plug-in fixing head (52) is provided with a fixing hole for inserting the slide rail seat (31).
8. The apparatus for testing the pressure resistance of the crutch strut according to claim 1, further comprising a positioning seat (1) and a supporting and fixing rod (2), wherein the positioning seat (1) is provided with a sliding seat (11), one end of the supporting and fixing rod (2) is fixed to the sliding rail seat (31), and the other end is slidably connected to the inner sidewall of the sliding seat (11).
9. The apparatus for testing the pressure resistance of crutch struts according to claim 8, wherein the end of the supporting and fixing rod (2) facing away from the slide rail seat (31) is provided with a slide block (21), and correspondingly, the slide rail seat (11) is provided with a slide groove adapted to the slide block (21).
10. The apparatus for testing the pressure resistance of crutch struts according to claim 4, wherein the lower end of the sliding connection plate (36) is provided with a force application ring (360) for facilitating the application of force by the examiner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716973.3U CN210221683U (en) | 2019-05-19 | 2019-05-19 | Instrument for testing pressure resistance of crutch strut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716973.3U CN210221683U (en) | 2019-05-19 | 2019-05-19 | Instrument for testing pressure resistance of crutch strut |
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| Publication Number | Publication Date |
|---|---|
| CN210221683U true CN210221683U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716973.3U Active CN210221683U (en) | 2019-05-19 | 2019-05-19 | Instrument for testing pressure resistance of crutch strut |
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| CN (1) | CN210221683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160869A (en) * | 2019-05-19 | 2019-08-23 | 宁波检验检疫科学技术研究院 | It is a kind of for testing the instrument of crutch pillar pressure resistance performance |
-
2019
- 2019-05-19 CN CN201920716973.3U patent/CN210221683U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160869A (en) * | 2019-05-19 | 2019-08-23 | 宁波检验检疫科学技术研究院 | It is a kind of for testing the instrument of crutch pillar pressure resistance performance |
| CN110160869B (en) * | 2019-05-19 | 2024-04-26 | 宁波检验检疫科学技术研究院 | Instrument for testing pressure resistance of crutch strut |
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Effective date of registration: 20210331 Address after: 315000 228, room 043, 66 Qingyi Road, hi tech Zone, Ningbo, Zhejiang. Patentee after: NINGBO JOYSUN TESTING SERVICE Co.,Ltd. Patentee after: NINGBO ACADEMY OF SCIENCE AND TECHNOLOGY FOR INSPECTION AND QUARANTINE Patentee after: Ningbo Customs Technology Center Address before: 315012 Ma Yuan Road, Haishu District, Ningbo, Zhejiang Province, No. 9 Patentee before: NINGBO ACADEMY OF SCIENCE AND TECHNOLOGY FOR INSPECTION AND QUARANTINE Patentee before: Ningbo Customs Technology Center |