CN110238775B - Clamp for deflection bending test of crutch - Google Patents
Clamp for deflection bending test of crutch Download PDFInfo
- Publication number
- CN110238775B CN110238775B CN201910604471.6A CN201910604471A CN110238775B CN 110238775 B CN110238775 B CN 110238775B CN 201910604471 A CN201910604471 A CN 201910604471A CN 110238775 B CN110238775 B CN 110238775B
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- crutch
- fixing
- clamping
- connecting rod
- clamping arm
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000005452 bending Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000007689 inspection Methods 0.000 abstract description 2
- 241001166076 Diapheromera femorata Species 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- RJMZIUFNDNYWDU-UHFFFAOYSA-N 3-chloro-2-hydroxy-5-phenylbenzoic acid Chemical compound ClC1=C(O)C(C(=O)O)=CC(C=2C=CC=CC=2)=C1 RJMZIUFNDNYWDU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses a clamp for deflection bending test of a crutch, in particular to the field of quality inspection, which comprises a movable seat and a fixed assembly for clamping the position of a crutch support; the fixing component comprises a first fixing device and a second fixing device which have the same structure, the first fixing device is arranged at the joint of the crutch strut and the crutch grab handle, and the second fixing device is arranged at the free end of the crutch strut; the first fixing device comprises a sliding seat, a fixing block, a clamping fixing piece and a driving piece for driving the clamping fixing piece to clamp the crutch strut, and the fixing block is fixedly arranged at the upper end of the sliding seat; the clamping fixing piece comprises a first clamping arm and a second clamping arm which are both in sliding connection with the fixing block, and the crutch strut is clamped between the first clamping arm and the second clamping arm. The deflection test precision of the clamp can reach 0.1mm, and the mechanical test process is more accurate and efficient. Meanwhile, in the testing process, the device cannot move, and the clamping fixing degree is higher.
Description
Technical Field
The invention relates to the field of quality inspection, in particular to a clamp for deflection bending test of a crutch.
Background
Today, in the standard CPSA0073 regarding the standard for identification and standard confirmation method of crutches, it is explicitly required that the seniors who export the crutches input into japan use the crutches in compliance with the specifications of the standard test. The standard comprises a test of deflection bending of the crutch. Standard test requirements are: the testing distance of the crutch strut is 600mm (less than 600mm, alternatively 500 mm), two points of the strut are fixed, the middle point is used as a deflection testing point, 196N force is applied, the testing direction is ensured to be at right angles to the strut, the time is 1 minute, and the bending deflection value of the sample is recorded. If the deflection of the crutch is less than 10mm, and the crutch is not damaged or falls off and does not influence the deformation in use, the crutch is qualified.
However, currently, manual handheld thrust meters are mostly adopted for fixing the crutch, so that the crutch support cannot be ensured to be in a horizontal state in the test, and cannot be better clamped and fixed. Resulting in failure of the accuracy of deflection test to meet the japanese CPSA 0073 standard requirements.
Disclosure of Invention
The present invention provides a method of guiding a variable lane which overcomes the above-mentioned disadvantages.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a clamp for testing deflection and bending of a crutch comprises a movable seat and a fixed component for clamping a crutch strut part; the fixing assembly comprises a first fixing device and a second fixing device which are identical in structure, the first fixing device is arranged at the joint of the crutch strut and the crutch grab handle, and the second fixing device is arranged at the free end of the crutch strut; the first fixing device comprises a sliding seat, a fixing block, a clamping fixing piece and a driving piece for driving the clamping fixing piece to clamp the crutch strut, and the fixing block is fixedly arranged at the upper end of the sliding seat; the clamping fixing piece comprises a first clamping arm and a second clamping arm which are both in sliding connection with the fixing block, and the crutch strut is clamped between the first clamping arm and the second clamping arm.
Preferably, the driving piece comprises a first connecting rod fixed on one end of the first clamping arm opposite to the fixed block, a second connecting rod fixed on one end of the second clamping arm opposite to the fixed block and a driving rod penetrating through the fixed block, wherein the first connecting rod is provided with a containing groove for embedding the second connecting rod, the second connecting rod is provided with a sliding through groove, the groove wall of the sliding through groove is provided with a first tooth part, and correspondingly, the side wall of the driving rod is provided with a second tooth part meshed with the first tooth part for rotation.
Preferably, the end of the driving rod facing the first clamping arm is provided with a fixing head for preventing the driving rod from falling off.
Preferably, a sliding groove is formed in one end, opposite to the sliding seat, of the fixed block, and sliding blocks matched with the sliding groove to slide are arranged on the first clamping arm and the second clamping arm.
Preferably, a rotating handle is arranged at one end of the driving rod, which is away from the fixed head.
Preferably, the clamping fixing piece further comprises a limiting arm, wherein the limiting arm is provided with a through hole for the driving rod to pass through, and the limiting arm is arranged at one end of the fixing block, which is opposite to the first clamping arm; the side wall of the driving rod is provided with a thread section, correspondingly, one end of the first connecting rod, which is away from the first clamping arm, is provided with an arc-shaped groove, the groove wall of the arc-shaped groove is provided with threads matched with the thread section, the thread section is arranged at one end of the near arc-shaped groove, and the second tooth part is arranged at one end of the far arc-shaped groove; the first tooth part and the second tooth part are meshed for transmission after the thread section is screwed into the arc-shaped groove until the rotating handle part is abutted against the limiting arm.
Preferably, the first fixing device further comprises a guide roller and a connecting rod, wherein the guide roller is convenient for horizontally moving the crutch strut, one end of the connecting rod is fixed with the fixed block, and the other end of the connecting rod is rotatably connected with the guide roller through a bearing.
Preferably, the device further comprises an auxiliary positioning device for auxiliary identification of the test points, the auxiliary positioning device comprises a support connecting rod and a measuring tape horizontally arranged on the movable seat, one end of the support connecting rod is fixed with the movable seat, and the other end of the support connecting rod is fixed with the measuring tape.
Preferably, the measuring ruler is provided with a groove which is convenient for observing the crutch strut.
Preferably, the walking stick is characterized by further comprising a tail positioning seat which is arranged on the movable seat in a sliding manner, wherein the tail positioning seat is provided with an insertion hole which is matched with the diameter of the walking stick support, and the side end of the tail positioning seat is provided with a walking stick support tail end indication groove.
The beneficial effects of the invention are as follows:
compared with the traditional manual hand-held thrust meter test, the clamp provided by the invention has the advantages that the deflection test precision of the clamp can reach 0.1mm, and the mechanized test process is more accurate and efficient. Meanwhile, in the testing process, the device cannot move, and the clamping fixing degree is higher.
Drawings
FIG. 1 is a schematic diagram of a fixture for testing deflection and bending of a crutch in the embodiment;
Fig. 2 is an enlarged view of a portion a in fig. 1;
FIG. 3 is a schematic structural view of a fixture for testing deflection and bending of a crutch in the present embodiment;
Fig. 4 is an enlarged view of a portion B in fig. 3;
FIG. 5 is a schematic structural view of a fixture for testing deflection and bending of a crutch in this embodiment;
Fig. 6 is an enlarged view of a portion C in fig. 5.
In the figure: 1. the movable seat, 21, the sliding seat, 22, the fixed block, 23, the first clamping arm, 24, the limiting arm, 240, the sliding groove, 25, the connecting rod, 26, the guide roller, 27, the driving rod, 270, the second tooth part, 271, the rotating handle part, 28, the fixed head, 291, the first connecting rod, 292, the second connecting rod, 293, the first tooth part, 31, the supporting connecting rod, 32, the measuring ruler, 33, the groove, 41, the tail positioning seat, 42, the jack, 44 and the crutch strut tail end indication groove.
Detailed Description
The present embodiment provides a method of guiding a variable lane, the method including the steps of:
as shown in fig. 1 to 6, a fixture for deflection bending test of a crutch comprises a movable seat 1 and a fixing component for clamping a crutch strut part; the fixing component comprises a first fixing device and a second fixing device which have the same structure, the first fixing device is arranged at the joint of the crutch strut and the crutch grab handle, and the second fixing device is arranged at the free end of the crutch strut; the first fixing device comprises a sliding seat 21, a fixing block 22, a clamping fixing piece and a driving piece for driving the clamping fixing piece to clamp the crutch strut, wherein the fixing block 22 is fixedly arranged at the upper end of the sliding seat 21; the clamping and fixing piece comprises a first clamping arm 23 and a second clamping arm which are both in sliding connection with the fixing block 22, and the crutch strut is clamped between the first clamping arm 23 and the second clamping arm.
In this embodiment, the first fixing device and the second fixing device are slidably disposed on the movable base 1, and the first fixing device is disposed at a junction between the crutch pillar and the crutch handle, and the second fixing device is disposed at a tail end of the crutch pillar. In the process of installation and fixation, the crutch strut can be placed between the first clamping arm 23 and the second clamping arm, and meanwhile, the gap between the first clamping arm 23 and the second clamping arm is driven to be smaller and smaller through the driving piece until the crutch strut is clamped and fixed.
As shown in fig. 2 and 6, the driving member includes a first connecting rod 291 fixed to an end of the first clamping arm 23 opposite to the fixed block 22, a second connecting rod 292 fixed to an end of the second clamping arm opposite to the fixed block 22, and a driving rod 27 penetrating through the fixed block 22, wherein the first connecting rod 291 is provided with a receiving slot into which the second connecting rod 292 is inserted, the second connecting rod 292 is provided with a sliding through slot, a slot wall of the sliding through slot is provided with a first tooth portion 293, and correspondingly, a side wall of the driving rod 27 is provided with a second tooth portion 270 engaged with and rotated with the first tooth portion 293.
When the first clamping arm 23 and the second clamping arm need to be driven to clamp the crutch prop, the driving rod 27 is rotated, so that the first tooth 293 arranged on the driving rod 27 drives the second tooth 270 to rotate, and the second connecting rod 292 is embedded into the accommodating groove in the first connecting rod 291, so that the distance between the first clamping arm 23 and the second clamping arm can be adapted to the crutch prop.
As shown in fig. 2, the end of the drive rod 27 facing the first clamp arm 23 is provided with a fixing head 28 for preventing escape.
As shown in fig. 2, a sliding groove 240 is disposed at an end of the fixed block 22 facing away from the sliding seat 21, and a sliding block adapted to slide in the sliding groove 240 is disposed on each of the first clamping arm 23 and the second clamping arm.
As shown in fig. 4, the end of the driving rod 27 facing away from the fixed head 28 is provided with a rotation handle 271.
As shown in fig. 2 and 4, the clamping fixing piece further comprises a limiting arm 24, the limiting arm 24 is provided with a through hole for the driving rod 27 to pass through, and the limiting arm 24 is arranged at one end of the fixing block 22, which is opposite to the first clamping arm 23; the side wall of the driving rod 27 is provided with a thread section, correspondingly, one end of the first connecting rod 291 facing away from the first clamping arm 23 is provided with an arc-shaped groove, the groove wall of the arc-shaped groove is provided with threads matched with the thread section, the thread section is arranged at one end of the near arc-shaped groove, and the second tooth part 270 is arranged at one end of the far arc-shaped groove; after the threaded section is screwed into the arc-shaped groove, the first tooth 293 and the second tooth 270 are meshed for transmission until the rotating handle 271 abuts against the limiting arm 24.
The limiting arm 24 is disposed at the other end of the fixed block 22, which corresponds to three-point fixation of the crutch strut. When the technician turns the drive rod 27, the threaded section may be screwed into the arcuate slot. When the rotation handle 271 is engaged with the stopper arm 24, the screwing cannot be continued, and the first tooth 293 and the second tooth 270 provided on the side wall of the driving lever 27 are engaged to rotate. Since the driving rod 27 is fixed, when the driving rod 27 is rotated, the second connecting rod 292 is inserted into the first connecting rod 291 until the crutch stay is fixed.
As shown in fig. 2, the first fixing device further comprises a guide roller 26 and a connecting rod 25 for facilitating horizontal movement of the crutch strut, one end of the connecting rod 25 is fixed with the fixing block 22, and the other end is rotatably connected with the guide roller 26 through a bearing. During the fixing process, the crutch strut can contact with the guide roller 26, so that the crutch strut can be prevented from being damaged or deformed by extrusion during the moving process.
As shown in fig. 4, the present embodiment further includes an auxiliary positioning device for auxiliary identification of test points, where the auxiliary positioning device includes a support connection rod 31 and a measuring tape 32 horizontally disposed on the movable base 1, and one end of the support connection rod 31 is fixed to the movable base 1, and the other end is fixed to the measuring tape 32. Because the test site is predefined, a technician can position according to the scale on the measuring tape 32, so that the measured deflection value of the crutch is more accurate.
As shown in fig. 3, the measuring tape 32 is provided with a groove 33 for facilitating the observation of the crutch stay. The location of the recess 33 indicates where the crutch strut is located, which may be more convenient for a technician to locate.
As shown in fig. 5, the present embodiment further includes a tail positioning seat 41 slidably disposed on the moving seat 1, wherein the tail positioning seat 41 is provided with an insertion hole 42 adapted to the diameter of the crutch strut, and a crutch strut tail end indication groove 44 is provided at a side end of the tail positioning seat 41.
Claims (5)
1. The fixture for the deflection bending test of the crutch is characterized by comprising a movable seat (1) and a fixing component for clamping the crutch strut part;
The fixing assembly comprises a first fixing device and a second fixing device which are identical in structure, the first fixing device is arranged at the joint of the crutch strut and the crutch grab handle, and the second fixing device is arranged at the free end of the crutch strut;
The first fixing device comprises a sliding seat (21), a fixing block (22), a clamping fixing piece and a driving piece for driving the clamping fixing piece to clamp the crutch strut, and the fixing block (22) is fixedly arranged at the upper end of the sliding seat (21);
the clamping fixing piece comprises a first clamping arm (23) and a second clamping arm which are both in sliding connection with the fixing block (22), and the crutch strut is clamped between the first clamping arm (23) and the second clamping arm;
The driving piece comprises a first connecting rod (291) fixed with one end of the first clamping arm (23) opposite to the fixed block (22), a second connecting rod (292) fixed with one end of the second clamping arm opposite to the fixed block (22) and a driving rod (27) penetrating through the fixed block (22), wherein the first connecting rod (291) is provided with a containing groove for the second connecting rod (292) to be embedded, the second connecting rod (292) is provided with a sliding through groove, the groove wall of the sliding through groove is provided with a first tooth part (293), and correspondingly, the side wall of the driving rod (27) is provided with a second tooth part (270) meshed with the first tooth part (293) to rotate;
The end part of the driving rod (27) facing the first clamping arm (23) is provided with a fixed head (28) for preventing the driving rod from falling off;
One end of the fixed block (22) back to the sliding seat (21) is provided with a sliding groove (240), and the first clamping arm (23) and the second clamping arm are respectively provided with a sliding block which is matched with the sliding groove (240) to slide;
One end of the driving rod (27) facing away from the fixed head (28) is provided with a rotating handle (271);
The clamping fixing piece further comprises a limiting arm (24), the limiting arm (24) is provided with a through hole for the driving rod (27) to pass through, and the limiting arm (24) is arranged at one end of the fixing block (22) opposite to the first clamping arm (23);
the side wall of the driving rod (27) is provided with a thread section, correspondingly, one end of the first connecting rod (291) back to the first clamping arm (23) is provided with an arc-shaped groove, the groove wall of the arc-shaped groove is provided with threads matched with the thread section, the thread section is arranged at one end of the near arc-shaped groove, and the second tooth part (270) is arranged at one end of the far arc-shaped groove;
The first tooth part (293) and the second tooth part (270) are meshed for transmission when the rotating handle part (271) is abutted against the limiting arm (24) after the thread section is screwed into the arc-shaped groove.
2. The fixture for deflection bending test of a crutch according to claim 1, wherein the first fixing device further comprises a guide roller (26) and a connecting rod (25) which facilitate horizontal movement of the crutch strut, one end of the connecting rod (25) is fixed with the fixing block (22), and the other end is rotatably connected with the guide roller (26) through a bearing.
3. The fixture for deflection bending test of the crutch according to claim 1, further comprising an auxiliary positioning device for auxiliary identification of test points, wherein the auxiliary positioning device comprises a support connecting rod (31) and a measuring scale (32) horizontally arranged on the movable seat (1), one end of the support connecting rod (31) is fixed with the movable seat (1), and the other end of the support connecting rod is fixed with the measuring scale (32).
4. A fixture for deflection bending test of crutch as in claim 3, characterized in that the measuring ruler (32) is provided with a groove (33) for facilitating observation of the crutch stay.
5. The fixture for the deflection bending test of the crutch, according to claim 1, further comprising a tail positioning seat (41) slidably arranged on the movable seat (1), wherein a jack (42) matched with the diameter of the crutch support is arranged on the tail positioning seat (41), and a crutch support tail end indication groove (44) is arranged at the side end of the tail positioning seat (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604471.6A CN110238775B (en) | 2019-07-05 | 2019-07-05 | Clamp for deflection bending test of crutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604471.6A CN110238775B (en) | 2019-07-05 | 2019-07-05 | Clamp for deflection bending test of crutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110238775A CN110238775A (en) | 2019-09-17 |
| CN110238775B true CN110238775B (en) | 2024-04-19 |
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ID=67891120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910604471.6A Active CN110238775B (en) | 2019-07-05 | 2019-07-05 | Clamp for deflection bending test of crutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110238775B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586958A1 (en) * | 1985-09-10 | 1987-03-13 | Laurence Raymond | Instantaneous "clamp-everything" appliance, and clamping method |
| CN103674692A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Three/four-point bending performance test general clamp for material |
| CN104677732A (en) * | 2015-03-04 | 2015-06-03 | 中国石油化工股份有限公司 | Bending property test fixture for thermoplastic plastic pipe |
| CN106885728A (en) * | 2017-02-14 | 2017-06-23 | 山东省医疗器械产品质量检验中心 | The fixture and method determined for bone plate bending strength and equivalent bending stiffness |
| CN107884267A (en) * | 2017-11-30 | 2018-04-06 | 深圳三思纵横科技股份有限公司 | A kind of rotational support mechanism, fixture and ceramic test piece arrangement for measuring bending property |
| KR101890296B1 (en) * | 2017-05-31 | 2018-08-21 | 주식회사 세원정공 | Durability testing device for a motor driven power steering |
| CN208283176U (en) * | 2018-05-14 | 2018-12-25 | 广东粤信建设工程质量安全检测有限公司 | A kind of core sample installs fixture of concrete Intensity of Breaking Tester |
| CN109765122A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of auto parts and components bending resistance cubing and its application method |
| CN210255847U (en) * | 2019-07-05 | 2020-04-07 | 宁波检验检疫科学技术研究院 | Clamp for crutch deflection bending test |
-
2019
- 2019-07-05 CN CN201910604471.6A patent/CN110238775B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586958A1 (en) * | 1985-09-10 | 1987-03-13 | Laurence Raymond | Instantaneous "clamp-everything" appliance, and clamping method |
| CN103674692A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Three/four-point bending performance test general clamp for material |
| CN104677732A (en) * | 2015-03-04 | 2015-06-03 | 中国石油化工股份有限公司 | Bending property test fixture for thermoplastic plastic pipe |
| CN106885728A (en) * | 2017-02-14 | 2017-06-23 | 山东省医疗器械产品质量检验中心 | The fixture and method determined for bone plate bending strength and equivalent bending stiffness |
| KR101890296B1 (en) * | 2017-05-31 | 2018-08-21 | 주식회사 세원정공 | Durability testing device for a motor driven power steering |
| CN107884267A (en) * | 2017-11-30 | 2018-04-06 | 深圳三思纵横科技股份有限公司 | A kind of rotational support mechanism, fixture and ceramic test piece arrangement for measuring bending property |
| CN208283176U (en) * | 2018-05-14 | 2018-12-25 | 广东粤信建设工程质量安全检测有限公司 | A kind of core sample installs fixture of concrete Intensity of Breaking Tester |
| CN109765122A (en) * | 2019-01-07 | 2019-05-17 | 崔云兰 | A kind of auto parts and components bending resistance cubing and its application method |
| CN210255847U (en) * | 2019-07-05 | 2020-04-07 | 宁波检验检疫科学技术研究院 | Clamp for crutch deflection bending test |
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| Publication number | Publication date |
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| CN110238775A (en) | 2019-09-17 |
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Address after: 315012, 9 Ma Yuan Road, Ningbo, Zhejiang Patentee after: Ningbo Institute of inspection and Quarantine Science and Technology (Ningbo national inspection and trade facilitation Service Center) Country or region after: China 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 Country or region before: China Patentee before: INSPECTION AND QUARANTINE TECHNOLOGY CENTER OF NINGBO ENTRY-EXIT INSPECTION AND QUARANTINE BUREAU OF P.R.C |