CN105571962A - Falling hammer impact test device - Google Patents
Falling hammer impact test device Download PDFInfo
- Publication number
- CN105571962A CN105571962A CN201610114279.5A CN201610114279A CN105571962A CN 105571962 A CN105571962 A CN 105571962A CN 201610114279 A CN201610114279 A CN 201610114279A CN 105571962 A CN105571962 A CN 105571962A
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- China
- Prior art keywords
- fixed mount
- iron ball
- base plate
- center
- hammer
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- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a falling hammer impact test device. The falling hammer impact test device comprises a handle, guiding sleeves, a connecting rod group, an impact hammer, an iron ball, a fixing frame, a bottom plate, check blocks and two supporting posts, wherein the two supporting posts are symmetrically and fixedly arranged on the bottom plate; the two supporting posts are respectively provided with one guiding sleeve; the two guiding sleeves are connected through the connecting rod group; the impact hammer is arranged at the center of the bottom part of the connecting rod group, and the handle is arranged at the center of the top part of the connecting rod group; the check blocks are arranged on the supporting posts and are positioned above the guiding sleeves; the bottom plate under the impact hammer is provided with the fixing frame; the longitudinal section of the fixing frame is boss-shaped; a to-be-tested block is arranged in the fixing frame and is in contact with the bottom plate; the iron ball is arranged at the center of the top part of the to-be-tested block; the top part of the iron ball protrudes the fixing frame. According to the falling hammer impact test device disclosed by the invention, high consistency of a test is effectively ensured, the problem that a falling point of the impact hammer cannot be accurately aligned is solved, and irregular secondary impact is reduced.
Description
Technical field
The invention belongs to shock resistance field tests, be specifically related to a kind of falling weight impact test device.
Background technology
Existing shock resistance is all adopt the equipment of the recommendation of the ACI544 council or improvement to test.Proving installation simplicity of design, relies on the height of testing crew manual control ram hammer, is comparatively difficult to ensure the consistent of confirmatory test height; Simultaneously ram hammer drop point can not each all with the ball precise alignment of bottom; Ram hammer can produce irregular secondary pulse after impacting bottom ball, if unshielded, can cause larger impact, even can threaten the safety of testing crew to test findings; Test unit for concrete strength lower, impulse test is carried out to high performance concrete and can produce huge workload.
Summary of the invention
The object of the present invention is to provide a kind of falling weight impact test device, effectively ensure that test height is consistent, the drop point solving ram hammer cannot the problem of precise alignment, decreases irregular secondary pulse.
The technical solution realizing the object of the invention is: a kind of falling weight impact test device, comprises handle, pilot sleeve, connection rod set, ram hammer, iron ball, fixed mount, base plate, block and support column; Described two support column symmetries are fixed on base plate, every root support column are respectively equipped with a pilot sleeve, and two pilot sleeves are connected by connection rod set, and connection rod set bottom centre is provided with ram hammer, and top center is provided with handle; Block is arranged on the support columns, and is positioned at above pilot sleeve; Base plate immediately below ram hammer is provided with fixed mount, and fixed mount vertical sectional shape is boss, and test block to be measured is arranged in fixed mount, and and contacts baseplate, iron ball is arranged on test block top center to be measured, and fixed mount is given prominence at iron ball top.
Further, described connection rod set comprises at least 1 montant and 2 cross bars, and cross bar is connected with two pilot sleeves, and montant is arranged on cross bar center, for connecting two cross bars; Iron ball is fixed on the cross bar center being positioned at below, and handle is fixed on the cross bar center being positioned at top.
Further, described iron ball diameter is 63.5mm.
Further, leave space between described fixed mount and test block to be measured, gap length is 1mm ~ 15mm, leaves space between fixed mount and iron ball, and gap length is 1mm ~ 5mm.
Further, described fixed mount and base plate are detachable connection.
Further, above-mentioned detachable connection adopts screw thread, bolt or buckle.
Compared with prior art, its remarkable advantage is in the present invention:
(1) limit test height by block, effectively can ensure that each test height is consistent.
(2) iron ball and test block to be measured are fixed on base plate by fixed mount, can fully ensure ram hammer drop point can with iron ball precise alignment.
(3) iron ball is limited on fixed mount by fixed mount, effectively avoids irregular secondary pulse, reduces test error, can prevent iron ball to upspring the threat that may cause testing crew simultaneously.
(4) experimental provision is simple, and precision is high.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of falling weight impact test device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 1, a kind of falling weight impact test device, comprises handle 1, pilot sleeve 2, connection rod set 3, ram hammer 4, iron ball 5, fixed mount 6, base plate 8, block 9 and support column 10.Described two support column 10 symmetries are fixed on base plate 8, every root support column 10 is respectively equipped with a pilot sleeve 2, pilot sleeve 2 can slide up and down along support column 10, and two pilot sleeves 2 are connected by connection rod set 3, connection rod set 3 bottom centre is provided with ram hammer 4, and top center is provided with handle 1.Block 9 is arranged on support column 10, and is positioned at above pilot sleeve 2, experimentally needs, and determines the position of block 9, ensures that ram hammer 4 starting altitude is consistent, and prevents pilot sleeve 2 from departing from support column 10.Base plate 8 immediately below ram hammer 4 is provided with fixed mount 6, and fixed mount 6 vertical sectional shape is boss, and test block 7 to be measured is arranged in fixed mount 6, and contact with base plate 8, iron ball 5 is arranged on test block 7 top center to be measured, and fixed mount 6 is given prominence at iron ball 5 top, and ram hammer 4 is fallen within iron ball 5.
Because ram hammer 4 quality is large, connection rod set 3 comprises at least 1 montant and 2 cross bars, and two cross bars are in distributing up and down, and cross bar is connected with two pilot sleeves 2, and montant is arranged on cross bar center, for connecting two cross bars, improves connection rod set 3 integral rigidity.Iron ball 5 is fixed on the cross bar center being positioned at below, and handle 1 is fixed on the cross bar center being positioned at top.
Described iron ball 5 diameter is 63.5mm.
Leave space between described fixed mount 6 and test block to be measured 7, gap length is 1mm ~ 15mm, leaves space between fixed mount 6 and iron ball 5, and gap length is 1mm ~ 5mm.Because iron ball 5 is positioned at test block 7 top center to be measured, add fixed mount 6 pairs of iron balls 5 and test block to be measured 7 spacing, make each experiment, ram hammer 4 acts on iron ball 5, makes test block 7 center stressed to be measured, decreases irregular secondary pulse.
Described fixed mount 6 is connected for detachable with base plate 8.Above-mentioned detachable connection adopts screw thread, bolt or buckle.
The equal material of falling weight impact test device feature of the present invention can adopt iron.Test block 7 to be measured is concrete test block.
The course of work:
Test block 7 to be measured is placed on base plate 8, and by screw thread, fixed mount 6 and base plate 8 is connected, then iron ball 5 is put in fixed mount 6, make iron ball 5 be positioned at test block 7 top center to be measured.
By handle 1, ram hammer 4 is lifted to the position of block 9, freely puts down, revision test, till test block 7 to be measured reaches criterion of failure.
Embodiment 1
Handle 1 length 250mm, pilot sleeve 2 for diameter be the hollow tubular of 10mm, length 30mm, ram hammer 4 quality is 10kg, fixed mount 6 bottom is the square frame of length of side 155mm, be highly 65mm, the square frame of to be the length of side be on top 65mm, be highly 55mm, test block 7 to be measured adopts the concrete sample of diameter 152mm, height 63.5mm, base plate 8 is the square steel plate of length of side 600mm, thickness 10mm, support column 10 length is 1000mm, and block 9 is 300mm apart from support column 10 overhead height.
Test block 7 to be measured is placed on base plate 8, and by screw thread, fixed mount 6 and base plate 8 is connected, then iron ball 5 is put in fixed mount 6, make iron ball 5 be positioned at test block 7 top center to be measured.
By handle 1, ram hammer 4 is lifted to the position of block 9, freely puts down, revision test, till test block 7 to be measured reaches criterion of failure, the data of record are as table 1
Table 1 is the falling weight impact test data of three groups of test blocks to be measured
| Numbering | Incipient crack number of shocks N 1 | Destroy number of shocks N 2 |
| 1 | 3 | 3 |
| 2 | 6 | 24 |
| 3 | 36 | 41 |
The intensity of three groups of test blocks 7 to be measured increases successively, known by table 1, along with the increase of intensity, and incipient crack number of shocks N1 and destroy number of shocks N2 also increase successively.
Claims (6)
1. a falling weight impact test device, is characterized in that: comprise handle (1), pilot sleeve (2), connection rod set (3), ram hammer (4), iron ball (5), fixed mount (6), base plate (8), block (9) and support column (10); Described two support column (10) symmetries are fixed on base plate (8), every root support column (10) is respectively equipped with a pilot sleeve (2), two pilot sleeves (2) are connected by connection rod set (3), connection rod set (3) bottom centre is provided with ram hammer (4), and top center is provided with handle (1); Block (9) is arranged on support column (10), and is positioned at pilot sleeve (2) top; Base plate (8) immediately below ram hammer (4) is provided with fixed mount (6), fixed mount (6) vertical sectional shape is boss, test block to be measured (7) is arranged in fixed mount (6), and contact with base plate (8), iron ball (5) is arranged on test block to be measured (7) top center, and fixed mount (6) is given prominence at iron ball (5) top.
2. drop impact device according to claim 1, is characterized in that: described connection rod set (3) comprises at least 1 montant and 2 cross bars, and cross bar is connected with two pilot sleeves (2), and montant is arranged on cross bar center, for connecting two cross bars; Iron ball (5) is fixed on the cross bar center being positioned at below, and handle (1) is fixed on the cross bar center being positioned at top.
3. drop impact device according to claim 1, is characterized in that: described iron ball (5) diameter is 63.5mm.
4. drop impact device according to claim 1, it is characterized in that: between described fixed mount (6) and test block to be measured (7), leave space, gap length is 1mm ~ 15mm, leaves space between fixed mount (6) and iron ball (5), and gap length is 1mm ~ 5mm.
5. drop impact device according to claim 1, is characterized in that: described fixed mount (6) is connected for detachable with base plate (8).
6. drop impact device according to claim 5, is characterized in that: above-mentioned detachable connection adopts screw thread, bolt or buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114279.5A CN105571962A (en) | 2016-03-01 | 2016-03-01 | Falling hammer impact test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114279.5A CN105571962A (en) | 2016-03-01 | 2016-03-01 | Falling hammer impact test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105571962A true CN105571962A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610114279.5A Pending CN105571962A (en) | 2016-03-01 | 2016-03-01 | Falling hammer impact test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105571962A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928805A (en) * | 2016-06-27 | 2016-09-07 | 西南交通大学 | Pressing type impact property testing device for material |
| CN106290013A (en) * | 2016-07-20 | 2017-01-04 | 南京理工大学 | Fixed pulley formula falling weight impact test device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6180028A (en) * | 1984-09-28 | 1986-04-23 | Saginomiya Seisakusho Inc | Apparatus for testing ceramic displacement |
| GB2217024A (en) * | 1988-03-31 | 1989-10-18 | Hoya Corp | Drop tester |
| CN101639429A (en) * | 2008-07-30 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Impact test device |
| CN202903622U (en) * | 2012-10-26 | 2013-04-24 | 苏州新地建设工程质量检测有限公司 | PVC (Poly Vinyl Chloride) profile drop hammer impact tester |
| CN203069466U (en) * | 2013-01-29 | 2013-07-17 | 中建商品混凝土有限公司 | Device for testing impact resistance of cement-based binding material and concrete |
| CN103424321A (en) * | 2013-08-21 | 2013-12-04 | 安徽中家智锐科技有限公司 | Impact testing apparatus for upper covers of washing machines |
| CN203432861U (en) * | 2013-01-30 | 2014-02-12 | 江阴市大阪涂料有限公司 | High-strength-resistant multipoint impact tester for paint film |
| CN205404310U (en) * | 2016-03-01 | 2016-07-27 | 南京理工大学 | Hammer impact test device falls |
-
2016
- 2016-03-01 CN CN201610114279.5A patent/CN105571962A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6180028A (en) * | 1984-09-28 | 1986-04-23 | Saginomiya Seisakusho Inc | Apparatus for testing ceramic displacement |
| GB2217024A (en) * | 1988-03-31 | 1989-10-18 | Hoya Corp | Drop tester |
| CN101639429A (en) * | 2008-07-30 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Impact test device |
| CN202903622U (en) * | 2012-10-26 | 2013-04-24 | 苏州新地建设工程质量检测有限公司 | PVC (Poly Vinyl Chloride) profile drop hammer impact tester |
| CN203069466U (en) * | 2013-01-29 | 2013-07-17 | 中建商品混凝土有限公司 | Device for testing impact resistance of cement-based binding material and concrete |
| CN203432861U (en) * | 2013-01-30 | 2014-02-12 | 江阴市大阪涂料有限公司 | High-strength-resistant multipoint impact tester for paint film |
| CN103424321A (en) * | 2013-08-21 | 2013-12-04 | 安徽中家智锐科技有限公司 | Impact testing apparatus for upper covers of washing machines |
| CN205404310U (en) * | 2016-03-01 | 2016-07-27 | 南京理工大学 | Hammer impact test device falls |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928805A (en) * | 2016-06-27 | 2016-09-07 | 西南交通大学 | Pressing type impact property testing device for material |
| CN105928805B (en) * | 2016-06-27 | 2018-10-26 | 西南交通大学 | Material pressure type impact property test device |
| CN106290013A (en) * | 2016-07-20 | 2017-01-04 | 南京理工大学 | Fixed pulley formula falling weight impact test device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160511 |
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| RJ01 | Rejection of invention patent application after publication |