CN108007658A - A kind of detection device of the spring assembly of reisilometer - Google Patents
A kind of detection device of the spring assembly of reisilometer Download PDFInfo
- Publication number
- CN108007658A CN108007658A CN201711449434.XA CN201711449434A CN108007658A CN 108007658 A CN108007658 A CN 108007658A CN 201711449434 A CN201711449434 A CN 201711449434A CN 108007658 A CN108007658 A CN 108007658A
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- China
- Prior art keywords
- suspension hook
- frame
- spring assembly
- hook
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 239000000725 suspension Substances 0.000 claims abstract description 53
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000005483 Hooke's law Effects 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of detection device of the spring assembly of reisilometer, column is fixed on base, elongated slot is processed on column, upper scale frame is fixed on elongated slot, scale is installed on the right side of scale frame, cross bar is fixed at the top of column, cross bar right end is snap part, recess is formed in snap part, spring assembly is by elastic tension spring seat, elastic tension spring, elastic hammer forms, elastic tension spring seating is in recess, elastic hammer center processing through hole I, suspension hook connector is snapped together with elastic hammer, suspension hook connector is built-in with suspension hook top, suspension hook compression spring, suspension hook frame is located at below suspension hook connector, the thin bar center of suspension hook frame is path section, support tray hanging hook component is hung in the path section of suspension hook frame;Device is using the rigidity of Hooke's law measurement elastic tension spring, and compact-sized, universal performance is good, while in detection process, the center of counterweight passes through the center of elastic tension spring, high certainty of measurement all the time.
Description
Technical field
The present invention relates to a kind of detection device of the spring assembly of reisilometer.
Background technology
Reisilometer be for detect concrete, mortar, brick compression strength instrument, its principle is by attack measured object table
Face obtain rebound value, using rebound value as with the relevant index of measured object compression strength, to estimate the compression strength of measured object.Return
The work structuring principle for playing instrument is to drive elastic hammer with elastic tension spring, and elastic hammer is hit tested with concrete etc. with constant kinetic energy
The elastic stem of thing surface perpendicular contact, deforms upon local measured object surface and absorbs sub-fraction energy, another major part
Energy is converted into the bounce-back kinetic energy of elastic hammer, and percussion pointer blocks are driven when the kinetic energy that rebounds is completely converted into potential energy along pointer guide rod
Make straight-line displacement, the rebound value on numerical value, that is, measured object surface after pointer blocks displacement on corresponding scale simultaneously can be calculated accordingly
Go out the compressive ultimate strength on measured object surface, elastic tension spring plays main driving effect, therefore elastic tension spring in reisilometer
Rigidity value size directly affect the rebound value on measured object surface.
The content of the invention
There are polytypic tension spring and the blank and shortcoming of associated technical parameters detection device, sheet in regarding to the issue above
Invention provides a kind of detection device of the spring assembly of reisilometer.
To achieve the above object, the present invention provides a kind of detection device of the spring assembly of reisilometer, including:
Base, the base are square plate, are positioned on the table top of workbench, column is fixed on the base vertically;
The column is machined with one of elongated slot along short transverse, and upper scale frame is fixed by screws on the elongated slot, mark
Ruler is installed on the right side of the upper scale frame;
Cross bar, the cross bar are fixed on the tip position of the column, and the cross bar right end is snap part, the buckle
The recess for placing spring assembly is formed in component;
The spring assembly is made of elastic tension spring seat, elastic tension spring, the elastic hammer being fixedly connected, elastic tension spring seating in
In the recess, elastic hammer center processing through hole I;
Suspension hook connector, the suspension hook connector are fastened on below the elastic hammer, and the suspension hook connector is toward both sides pair
Title extends to form guide rod, and suspension hook top and suspension hook compression spring are built in the suspension hook connector and are screwed by suspension hook lid;
Suspension hook frame, the suspension hook frame are fixed on below the suspension hook connector, and the thin bar center of the suspension hook frame is path
Section;
Support tray hanging hook component, the support tray hanging hook component are made of fixed seat, support tray hanging hook bar, on the support tray hanging hook bar
Non- equidistantly locating and machining convex shoulder, is connected with hook receiver at the top of the support tray hanging hook bar, the hook receiver hangs over described
In path section.
As a further improvement on the present invention, the upper scale frame is made of first head, the second frame head, frame bottom, described
Through hole is processed on first head, the second frame head, square hole is processed on the frame bottom.
As a further improvement on the present invention, the scale is made of main part, extension, and the main part is rectangular
Body, the matching of its lower end are fixedly mounted regulation stud through the square hole, the main part upper end and are furnished with scale compression spring.
As a further improvement on the present invention, the regulation stud is through the through hole and in the first head, second
Installation and adjustment roller between frame head.
As a further improvement on the present invention, guide groove is machined with the inside of the extension, its size and the guiding
Bar matches, and scale is marked on the wall of the extension.
As a further improvement on the present invention, the snap part is divided into fixed part, movable part, the fixed part with it is described
Cross bar is fixedly connected, and the movable part is hingedly connected at one end of the fixed part and is controlled by eave tile and opens or lock.
As a further improvement on the present invention, the notch of the top processing of the hook receiver tiltedly up, the notch
Top is circle, and the circular diameter is consistent with the diameter of the path section, and the circular center is in the support tray hanging hook
On the center line of bar.
Beneficial effects of the present invention are:
Device is using the rigidity of Hooke's law measurement elastic tension spring, and compact-sized, universal performance is good.Applicable detection is a variety of
The elastic tension spring associated technical parameters of model reisilometer;The center of counterweight passes through elastic tension spring all the time in detection process at the same time
Center, high certainty of measurement.
Brief description of the drawings
Fig. 1 is a kind of detection device front view of the spring assembly of reisilometer of the present invention;
Fig. 2 is the partial enlarged view of Fig. 1;
Fig. 3 is the top view (opening) of snap part;
Fig. 4 is the top view (closing) of snap part;
Fig. 5 is the enlarged drawing of spring assembly;
Fig. 6 is suspension hook connector, suspension hook, suspension hook top, suspension hook compression spring, the enlarged drawing of suspension hook lid;
Fig. 7 is the enlarged drawing of support tray hanging hook component;
Fig. 8 is the enlarged drawing of location A in Fig. 1;
Fig. 9 is A-A sectional views in Fig. 8.
In figure:1st, base;2nd, column;21st, elongated slot;3rd, screw;4th, upper scale frame;41st, first head;42nd, the second frame head;
43rd, frame bottom;431st, square hole;5th, regulation stud;6th, roller is adjusted;7th, scale compression spring;8th, scale;81st, main part;82nd, extension;
821st, guide groove;9th, cross bar;10th, snap part;101st, fixed part;102nd, movable part;103rd, eave tile;11st, spring assembly;111、
Elastic tension spring seat;112nd, elastic tension spring;113rd, elastic hammer;1131st, through hole I;12nd, suspension hook connector;121st, guide rod;13rd, hang
Hook comes directly towards;14th, suspension hook compression spring;15th, suspension hook lid;16th, suspension hook frame;161st, thin bar;1611st, path section;17th, hook receiver;18th, hold in the palm
Disk hanging hook assembly;181st, fixed seat;182nd, support tray hanging hook bar;1821st, convex shoulder is positioned.
Embodiment
As shown in the figure, a kind of detection device of the spring assembly of reisilometer described in the embodiment of the present invention, including:Such as Fig. 1
Shown, base 1 is square plate, is positioned on the table top of workbench, and column 2 is fixed on base 1 vertically;As shown in Fig. 2, column
2 are machined with one of elongated slot 21 along short transverse, and upper scale frame 4 is fixed on elongated slot 21 by screw 3, and upper scale frame 4 is by first
First 41, second frame of frame is first 42, frame bottom 43 forms, and processes through hole on first 41, second frame first 42 of first, square hole is processed on frame bottom 43
431, scale 8 is installed on the right side of scale frame 4, and scale 8 is made of main part 81, extension 82, and main part 81 is cuboid, its
Lower end matching is through square hole 431, and 81 upper end of main part is fixedly mounted regulation stud 5 and is furnished with scale compression spring 7, and regulation stud 5 is worn
Cross through hole and the installation and adjustment roller 6 between first 41, second frame first 42 of first;The inner side of extension 82 is machined with guide groove
821, its size is matched with guide rod 121, and scale is marked on the wall of extension 82;As shown in Figure 1, cross bar 9 is fixed on column 2
Tip position, 9 right end of cross bar is snap part 10, and the recess for placing spring assembly 11, clamping part are formed in snap part 10
Part 10 divides to be fixedly connected for fixed part 101, movable part 102, fixed part 101 with cross bar 9, and movable part 102 is hingedly connected at fixation
The one end in portion 101 simultaneously controls opening or locking (shown in Fig. 3, Fig. 4) as eave tile 103;As shown in figure 5, spring assembly 11 is by solid
Surely elastic tension spring seat 111, elastic tension spring 112, the elastic hammer 113 connected forms, and elastic tension spring seat 111 is placed in recess, attack
Hammer 113 centers processing through hole I1131 into shape;As shown in Figure 1, suspension hook connector 12 is fastened on the lower section of elastic hammer 113, as shown in fig. 6, hanging
Hook connects part 12 is symmetrically extended to form guide rod 121 toward both sides, and suspension hook top 13 and suspension hook compression spring 14 are built in suspension hook connector
Screwed in 12 and by suspension hook lid 15, suspension hook frame 16 is fixed on the lower section of suspension hook connector 12, and 161 center of thin bar of suspension hook frame 16 is small
Footpath section 1611;As shown in fig. 7, support tray hanging hook component 18 is made of fixed seat 181, support tray hanging hook bar 182, support tray hanging hook bar 182
Upper non-equidistantly locating and machining convex shoulder 1821, the top of support tray hanging hook bar 182 is connected with hook receiver 17, and hook receiver 17 is hung over
In path section 1611, the notch of the top of hook receiver 17 processing tiltedly up, the top of notch is circle, circular diameter with it is small
The diameter of footpath section 1611 is consistent, and circular center is on the center line of support tray hanging hook bar 182 (shown in Fig. 8, Fig. 9).
Device measures the performance of elastic tension spring using Hooke's law, and compact-sized, universal performance is good, while in detection process
In, the center of counterweight passes through the center of elastic tension spring, high certainty of measurement all the time.
When specifically used, for convenience of the present invention is understood, it is described with reference to attached drawing;
Device is using the rigidity of Hooke's law measurement elastic tension spring, and compact-sized, universal performance is good.Applicable detection is a variety of
The elastic tension spring associated technical parameters of model reisilometer;The center of counterweight passes through elastic tension spring all the time in detection process at the same time
Center, high certainty of measurement.
The advantages of present apparatus be it is following some:
Firstth, upper scale frame height can coarse adjustment, scale height can fine tuning, snap part has the activity that can open closure
Portion and snap part are divided into light-duty, medium-sized, heavy, convenient on column can replace, square groove limited bayonet guarantor is designed with structure
Demonstrate,prove setting angle uniformity so that device can carry out the elastic tension spring stiffness measurement of the spring assembly of plurality of specifications, versatility
Can be good;
Secondth, suspension hook connector is built-in with suspension hook top, and suspension hook top enters attack under the elastic reaction of suspension hook compression spring
In the through hole I of hammer so that the connection of suspension hook connector and spring assembly ensures on the same line, while convenient to disassembly;
3rd, the thin bar of suspension hook frame has path section, and hook receiver is hung in path section, also ensure that collinear want
Ask;
4th, the positioning convex shoulder of Length discrepancy is not processed on support tray hanging hook bar equidistantly, according to actual counterweight weight and inspection
Survey and require, when hanging different counterweights, ensure that the center of counterweight is consistent with the center of support tray hanging hook bar, due to the weight of different weight
Code thickness is different, and the weight of support tray hanging hook component meets the examination criteria of country;
5th, the guide groove in scale can ensure that hook assembly does not sway forwards and backwards shadow because of the interference of helical angle of spring degree
Ring the accuracy of reading.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
- A kind of 1. detection device of the spring assembly of reisilometer, it is characterised in that including:Base (1), the base (1) is square plate, is positioned on the table top of workbench, and column (2) is fixed on the bottom vertically On seat (1);The column (2) is machined with one of elongated slot (21) along short transverse, and upper scale frame (4) is fixed on described by screw (3) On elongated slot (21), scale (8) is installed on the right side of the upper scale frame (4);Cross bar (9), the cross bar (9) are fixed on the tip position of the column (2), and cross bar (9) right end is snap part (10), the recess for placing spring assembly (11) is formed in the snap part (10);The spring assembly (11) is by the elastic tension spring seat (111), elastic tension spring (112), elastic hammer (113) group that are fixedly connected Into elastic tension spring seat (111) is placed in the recess, elastic hammer (113) center processing through hole I (1131);Suspension hook connector (12), the suspension hook connector (12) are fastened on below the elastic hammer (113), the suspension hook connector (12) it is symmetrically extended to form guide rod (121) toward both sides, suspension hook top (13) and suspension hook compression spring (14) are built in the suspension hook and connect Screwed in fitting (12) and by suspension hook lid (15);Suspension hook frame (16), the suspension hook frame (16) are fixed on below the suspension hook connector (12), the suspension hook frame (16) it is thin Bar (161) center is path section (1611);Support tray hanging hook component (18), the support tray hanging hook component (18) are made of fixed seat (181), support tray hanging hook bar (182), institute Non- equidistantly locating and machining convex shoulder (1821) on support tray hanging hook bar (182) is stated, is connected with the top of the support tray hanging hook bar (182) Hook receiver (17), the hook receiver (17) are hung in the path section (1611).
- A kind of 2. detection device of the spring assembly of reisilometer according to claim 1, it is characterised in that:The upper scale Frame (4) is made of first head (41), the second frame head (42), frame bottom (43), on the first head (41), the second frame head (42) Through hole is processed, square hole (431) is processed on the frame bottom (43).
- A kind of 3. detection device of the spring assembly of reisilometer according to claim 2, it is characterised in that:The scale (8) it is made of main part (81), extension (82), the main part (81) is cuboid, its lower end is matched through the square hole (431), main part (81) upper end is fixedly mounted regulation stud (5) and is furnished with scale compression spring (7).
- A kind of 4. detection device of the spring assembly of reisilometer according to claim 3, it is characterised in that:The adjusting spiral shell Column (5) installation and adjustment roller (6) through the through hole and the first head (41), the second frame head (42).
- A kind of 5. detection device of the spring assembly of reisilometer according to claim 3 or 4, it is characterised in that:It is described to prolong Guide groove (821) is machined with the inside of extending portion (82), its size is matched with the guide rod (121), and scale is marked in the extension On the wall in portion (82).
- A kind of 6. detection device of the spring assembly of reisilometer according to claim 1, it is characterised in that:The clamping part Part (10) is divided into fixed part (101), movable part (102), and the fixed part (101) is fixedly connected with the cross bar (9), the work Dynamic portion (102) are hingedly connected at one end of the fixed part (101) and are controlled by eave tile (103) and open or lock.
- A kind of 7. detection device of the spring assembly of reisilometer according to claim 1, it is characterised in that:The hook connects The notch of the top processing of head (17) tiltedly up, the top of the notch is circle, the circular diameter and the path section (1611) diameter is consistent, and the circular center is on the center line of the support tray hanging hook bar (182).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711449434.XA CN108007658B (en) | 2017-12-27 | 2017-12-27 | Detection device for spring assembly of resiliometer |
Applications Claiming Priority (1)
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CN201711449434.XA CN108007658B (en) | 2017-12-27 | 2017-12-27 | Detection device for spring assembly of resiliometer |
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CN108007658A true CN108007658A (en) | 2018-05-08 |
CN108007658B CN108007658B (en) | 2023-12-08 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112719906A (en) * | 2021-01-09 | 2021-04-30 | 东莞市史雷帝三维数控科技有限公司 | Processing equipment with double-end lifting hook having buckle resilience detection function |
CN113311137A (en) * | 2021-05-31 | 2021-08-27 | 于雪 | Based on concrete structure engineering construction quality control check out test set |
CN117298712A (en) * | 2023-10-27 | 2023-12-29 | 深圳市汉斯顿净水设备有限公司 | Rotary filter element capable of keeping high rotation speed stability |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1092038A (en) * | 1965-05-05 | 1967-11-22 | Zavoid Za Str Konstrukzii | Improved non-destructive hardness testing device |
KR20090017770A (en) * | 2007-08-16 | 2009-02-19 | (사)한국도로교통협회 | The face hitting rebound test machine for nondestructive test of concrete compressive strength |
CN202648625U (en) * | 2012-06-14 | 2013-01-02 | 舟山市博远科技开发有限公司 | Flicking hammer displacement detection apparatus of resiliometer comparator |
CN203132932U (en) * | 2013-02-04 | 2013-08-14 | 中电投工程研究检测评定中心 | Structural component intensity detecting device |
CN104833601A (en) * | 2015-04-30 | 2015-08-12 | 河海大学 | Automatic resiliometer used for testing compressive strength of concrete |
CN204718904U (en) * | 2015-06-14 | 2015-10-21 | 李和良 | A kind of reisilometer |
CN206740553U (en) * | 2017-04-18 | 2017-12-12 | 上海标卓科学仪器有限公司 | A kind of reisilometer elastic tension spring calibrating instrument |
CN207832411U (en) * | 2017-12-27 | 2018-09-07 | 舟山市博远科技开发有限公司 | A kind of detection device of the spring assembly of reisilometer |
-
2017
- 2017-12-27 CN CN201711449434.XA patent/CN108007658B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1092038A (en) * | 1965-05-05 | 1967-11-22 | Zavoid Za Str Konstrukzii | Improved non-destructive hardness testing device |
KR20090017770A (en) * | 2007-08-16 | 2009-02-19 | (사)한국도로교통협회 | The face hitting rebound test machine for nondestructive test of concrete compressive strength |
CN202648625U (en) * | 2012-06-14 | 2013-01-02 | 舟山市博远科技开发有限公司 | Flicking hammer displacement detection apparatus of resiliometer comparator |
CN203132932U (en) * | 2013-02-04 | 2013-08-14 | 中电投工程研究检测评定中心 | Structural component intensity detecting device |
CN104833601A (en) * | 2015-04-30 | 2015-08-12 | 河海大学 | Automatic resiliometer used for testing compressive strength of concrete |
CN204718904U (en) * | 2015-06-14 | 2015-10-21 | 李和良 | A kind of reisilometer |
CN206740553U (en) * | 2017-04-18 | 2017-12-12 | 上海标卓科学仪器有限公司 | A kind of reisilometer elastic tension spring calibrating instrument |
CN207832411U (en) * | 2017-12-27 | 2018-09-07 | 舟山市博远科技开发有限公司 | A kind of detection device of the spring assembly of reisilometer |
Non-Patent Citations (1)
Title |
---|
黄云鹏;张福平;孙庆军;: "浅谈回弹仪的弹击拉簧刚度的测量", 科技信息, no. 22 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112719906A (en) * | 2021-01-09 | 2021-04-30 | 东莞市史雷帝三维数控科技有限公司 | Processing equipment with double-end lifting hook having buckle resilience detection function |
CN113311137A (en) * | 2021-05-31 | 2021-08-27 | 于雪 | Based on concrete structure engineering construction quality control check out test set |
CN117298712A (en) * | 2023-10-27 | 2023-12-29 | 深圳市汉斯顿净水设备有限公司 | Rotary filter element capable of keeping high rotation speed stability |
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