CN203069466U - Device for testing impact resistance of cement-based binding material and concrete - Google Patents
Device for testing impact resistance of cement-based binding material and concrete Download PDFInfo
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- CN203069466U CN203069466U CN 201320047805 CN201320047805U CN203069466U CN 203069466 U CN203069466 U CN 203069466U CN 201320047805 CN201320047805 CN 201320047805 CN 201320047805 U CN201320047805 U CN 201320047805U CN 203069466 U CN203069466 U CN 203069466U
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Abstract
The utility model relates to a device for testing impact resistance of cement-based binding material and concrete. The device is characterized by comprising an impact device and a transmission device, wherein the impact device comprises a transmission rod, a transmission rod fixing bracket, a force transfer ball and a testing test block fixing device used for fixing a testing test block; the testing test block fixing device is positioned below the transmission rod fixing bracket; a hole is formed in the middle of a cover plate on the upper surface of the testing test block fixing device; a force transfer ball baffle is arranged at the hole; the force transfer ball is positioned in a hole in the cover plate of the testing test block fixing device, wherein the force transfer ball is arranged on the testing test block; the upper part of the transmission rod fixing bracket is provided with a transmission rod sleeve; the transmission rod sleeve is positioned above the hole in the cover plate of the testing test block fixing device; the bottom of the transmission rod is provided with an impact hammer; the upper end of the transmission rod is inserted into the transmission rod sleeve; the impact hammer is positioned above the force transfer ball and is contacted with the force transfer ball; and the transmission rod is connected with a transmission device through which the transmission rod reciprocates up and down. According to the device, the impact frequency of the impact hammer can be accurately controlled, and the obtained test data is accurate.
Description
Technical field
The utility model relates to a kind of cement-based gelling material and elastic modulus of concrete performance testing device.
Technical background
Current, opposing is from earthquake, and wave is driven piles, and the ability of dynamic loads such as aircraft landing is considered to one of concrete important performance in engineering is used, and the height of concrete shock resistance is an importance estimating the concrete dynamic property; How to test the extensive concern that concrete shock resistance has caused engineering circle experts and scholars accurately and effectively; At present, do not have unified test method to test concrete shock resistance both at home and abroad, test method commonly used has drop hammer type test, explosive test, bullet impulse test, pendulum impulse test etc.Characteristics such as wherein the drop hammer type shock test method operation of American Concrete Institute ACI proposition is simple relatively, and is lower to Test Condition Requirements, and energy consumption is low can be estimated concrete shock resistance efficiently and effectively and be widely used in testing laboratory, places such as building site; Yet there is following problem in ACI conventional impact testing equipment: the first, because ram hammer is by location manually, it is constant that each shock height is difficult to accurately control; When artificially discharging ram hammer, can influence its initial velocity and initial acceleration, be difficult to guarantee the movement of falling object of ram hammer; The drop point of ram hammer also can be subjected to artificial factor, thereby influences the accuracy of experimental data.The second, when ram hammer impacts the power transmission ball, can drop into the irregular impact that base plate produces secondary, also can produce threat to the safety of testing crew; The 3rd, can't guarantee uniform frequency of impact, the shock resistance that the test test specimen shows under different frequency of impacts is different.
The utility model content
The purpose of this utility model is to provide a kind of cement-based gelling material and elastic modulus of concrete performance testing device, and this device can accurately be controlled the frequency of impact of ram hammer, and the test figure that obtains is accurate.
For achieving the above object, technical solution adopted in the utility model is: a kind of cement-based gelling material and elastic modulus of concrete performance testing device is characterized in that: it comprises percussion mechanism and gearing; Described percussion mechanism comprises drive link, drive link fixed support, power transmission ball and is used for the test test block stationary installation of fixing test test block; Test test block stationary installation is positioned at the support bracket fastened below of drive link, and middle place is provided with hole on the upper surface cover plate of test test block stationary installation, and the hole place is provided with power transmission ball baffle plate; The power transmission ball is positioned at the hole (the power transmission ball is placed in the test test block) on the test test block stationary installation cover plate; Drive link fixed support top is provided with the drive link sleeve, the drive link sleeve be positioned at hole on the test test block stationary installation cover plate directly over; The bottom of drive link is provided with ram hammer, and the upper end of drive link is inserted in the drive link sleeve, ram hammer be positioned at the power transmission ball directly over and contact with it; Described drive link is connected with the gearing that drive link is done pump.
Described test test block stationary installation constitutes a cylindrical space by ring baffle, stiff baseplate and cover plate, cover plate is positioned at the ring baffle top, stiff baseplate is positioned at the ring baffle below, and the cover plate center is provided with hole, and the inwall of ring baffle is provided with one deck foam backing plate.
Described gearing comprises the drive link side lever, and an end of drive link side lever is fixed on the middle and lower part of drive link; It also comprises rotor wheel, motor, counter and power wheel fixed support, and rotor wheel is fixed on the power wheel fixed support, and rotor wheel is provided be used to the rotor wheel nose bar of stirring the drive link side lever; Counter links to each other with rotor wheel, and rotor wheel is by direct motor drive; The left and right sides of described drive link sleeve lining is arranged with projection, and the left and right sides of drive link outer wall is arranged with the groove that is complementary with it.
The front end of described power wheel nose bar is circular-arc.
The beneficial effects of the utility model:
1. this device uses mechanical braking to replace artificial braking can accurately control the frequency of impact of ram hammer, and the test figure that obtains is accurate;
2. the power wheel of this device is by direct motor drive, and links to each other with counter, can control frequency of impact accurately according to the test needs;
3. the power wheel nose bar front end of this device is circular-arc, be convenient to the power wheel nose bar in rotation process with the separating of drive link side lever;
4. this apparatus structure is simple, and is easy and safe to operate, the data precision height that tests out.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model percussion mechanism.
Fig. 3 is the structural representation of the utility model gearing.
Fig. 4 is the structural representation of the test test block stationary installation of the utility model percussion mechanism.
Fig. 5 is the geometric representation of the relation of power wheel radius (R), rotor wheel nose bar length (L) and ram hammer freely falling body height (H).
Among the figure: 1-drive link; 2-drive link side lever; 3-ram hammer; 4-drive link fixed support; 5-drive link sleeve; 6-power transmission ball; 7-power transmission ball baffle plate; 8-ring baffle; 9-stiff baseplate; 10-foam backing plate; 11-test test block; 12-rotor wheel; 13-rotor wheel nose bar; 14-motor; 15-counter; 16-power wheel fixed support; 17-cover plate.
Embodiment
In order to understand the utility model better, below in conjunction with embodiment and accompanying drawing the technical solution of the utility model is described further, but protection domain of the present utility model is not limited to the following examples.
A kind of cement-based gelling material and elastic modulus of concrete performance testing device, as depicted in figs. 1 and 2, it comprises percussion mechanism and gearing; Described percussion mechanism comprises drive link 1, drive link fixed support 4, power transmission ball 6 and is used for the test test block stationary installation of fixing test test block 11; Test test block stationary installation is positioned at the below of drive link fixed support 4, and middle place is provided with hole on the cover plate 17 of test test block stationary installation, and the hole place is provided with power transmission ball baffle plate 7; Power transmission ball 6 is positioned at the hole (power transmission ball 6 is placed in the test test block 11) on the test test block stationary installation cover plate 17; Drive link fixed support 4 tops are provided with drive link sleeve 5, drive link sleeve 5 be positioned at hole on the test test block stationary installation cover plate 17 directly over; The bottom of drive link 1 is provided with ram hammer 3, and the upper end of drive link 1 is inserted in the drive link sleeve 5, ram hammer 3 be positioned at power transmission ball 6 directly over and contact with it; Described drive link 1 is connected with the gearing that drive link 1 is done pump.
As shown in Figure 4, described test test block stationary installation constitutes a cylindrical space by ring baffle 8, stiff baseplate 9 and cover plate 17, cover plate 17 is positioned at ring baffle 8 tops, stiff baseplate 9 is positioned at ring baffle 8 belows, cover plate 17 centers are provided with hole, and the inwall of ring baffle 8 is provided with one deck foam backing plate 10.
As shown in Figure 3, described gearing comprises drive link side lever 2, and an end of drive link side lever 2 is fixed on the middle and lower part of drive link 1; It also comprises rotor wheel 12, motor 14, counter 15 and power wheel fixed support 16, and rotor wheel 12 is fixed on the power wheel fixed support 16, and rotor wheel 12 is provided be used to the rotor wheel nose bar 13 of stirring drive link side lever 2; Counter 15 links to each other with rotor wheel 12, and rotor wheel 12 is driven by motor 14; The left and right sides of described drive link sleeve 5 inwalls is arranged with projection, and the left and right sides of drive link 1 outer wall is arranged with the groove that is complementary with it.
The front end of described power wheel nose bar 13 is circular-arc.
Described drive link side lever 2 is fixed on apart from 1/3 position, drive link 1 location, at the external and built-in screw thread of both binding sites difference, by screw thread both is fixed as one.
Described power transmission ball 6 is the hardened steel ball of diameter 63.5 mm, is fixed in the center of test test block 11 by power transmission ball baffle plate 7.
The end that drive link 1 is connected with ram hammer 3 is built-in and external screw thread respectively, by screw thread two parts closely is connected to one; Drive link 1 is the hollow tubular of 2 mm for wall thickness, and ram hammer 3 is closely knit hard bloom; Drive link 1 is 4.5kg with the general assembly (TW) of ram hammer 3.
Drive link 1 two wall symmetric positions about the outside are offered the degree of depth 1 mm groove, and drive link sleeve 5 inwall left and right sides symmetries are offered projection, and the undersized of projection is in the size of groove; Drive link 1 is imported in the drive link sleeve 5, do not rotate when guaranteeing that by the combination of projection and groove drive link 1 moves down in vertical direction.
Power wheel 1 is driven by motor 14, and links to each other with counter 15, can control frequency of impact accurately according to the test needs.
Power wheel nose bar 13 front ends are circular-arc, be convenient to power wheel nose bar 13 in rotation process with the separating of drive link side lever 2.
According to ram hammer freely falling body height (H) and power wheel radius (R), calculate definite rotor wheel nose bar length (L) by geometric formula; After the device assembling finishes, set the frequency of impact of ram hammer 3 by counter; This device be convenient to investigate test test block 11 under different frequency of impacts shock resistance and be convenient to accurately, quick and effecting reaction test test block 11 shock resistances.
Use and method of testing:
The first, the making of test test block 11: requiring to make thickness according to the corresponding cylinder test of ACI is 63.5 ± 3mm, and diameter is the shock resistance test test block 11 of 152 ± 3mm; Test test block 11 should be tested at 7d, 28d or 90d respectively; Should measure the average thickness of test test block 11 before on-test;
Second, determine rotor wheel nose bar length (L) and power wheel side lever length (L): according to the requirement of impact test, be 457mm and rotor wheel radius (R) value size by ram hammer freely falling body height (H), by calculating according to theory, calculate rotor wheel nose bar length (L).Because rotor wheel nose bar 13 is identical with the length of rotor wheel side lever 2, so identical rotor wheel nose bar 13 and the drive link side lever 2 of difference installation length; When device is installed, when rotating, run into drive link 1 for preventing power wheel nose bar 13, need power wheel nose bar 13 slightly away from drive link 1;
Power wheel radius, power wheel nose bar length and ram hammer freely falling body height relationships be as shown in Figure 5: the height of ignoring drive link side lever 2 and rotor wheel nose bar 13 is disregarded, can draw relational expression: 1) Tan θ=H/R (according to R and H value size, just can extrapolate the θ value); 2) Sin θ=H/ (L+R) by the θ value, can calculate the size (being rotor wheel nose bar length and power wheel side lever length) of L value;
The 3rd, Unit Installation: 1) should be coated with one deck vaseline or lubricating oil at stiff baseplate 9 before the impact beginning, and before the incipient crack crack occurs, between test test block 11 and ring baffle 8, fill up one deck foam backing plate 10, to prevent the movement of test test block 11 in the impact process; 2) stiff baseplate 9 should be fixed on a rigid ground; 3) rotating speed of rotor wheel 12 is set by counter 15, sets the frequency of impact of ram hammer 3 indirectly;
The 4th, test test block 11 performance tests and evaluation: according to calibrated altitude test specimen is carried out circulation impact, the impact number of times when record test test block 11 incipient cracks are with destruction respectively (the incipient crack crack back occurs foam backing plate 10 is removed).
Claims (4)
1. cement-based gelling material and elastic modulus of concrete performance testing device, it is characterized in that: it comprises percussion mechanism and gearing; Described percussion mechanism comprises drive link (1), drive link fixed support (4), power transmission ball (6) and is used for the test test block stationary installation of fixing test test block (11); Test test block stationary installation is positioned at the below of drive link fixed support (4), and the place was provided with hole in the middle of the upper surface cover plate (17) of test test block stationary installation was gone up, and the hole place is provided with power transmission ball baffle plate (7); Power transmission ball (6) is positioned at the hole on the test test block stationary installation cover plate (17); Drive link fixed support (4) top is provided with drive link sleeve (5), drive link sleeve (5) be positioned at test test block stationary installation cover plate (17) go up hole directly over; The bottom of drive link (1) is provided with ram hammer (3), and the upper end of drive link (1) is inserted in the drive link sleeve (5), ram hammer (3) be positioned at power transmission ball (6) directly over and contact with it; Described drive link (1) with make drive link (1) make the gearing that pumps to be connected.
2. cement-based gelling material according to claim 1 and elastic modulus of concrete performance testing device, it is characterized in that: described test test block stationary installation constitutes a cylindrical space by ring baffle (8), stiff baseplate (9) and cover plate (17), cover plate (17) is positioned at ring baffle (8) top, stiff baseplate (9) is positioned at ring baffle (8) below, cover plate (17) center is provided with hole, and the inwall of ring baffle (8) is provided with one deck foam backing plate (10).
3. cement-based gelling material according to claim 1 and elastic modulus of concrete performance testing device, it is characterized in that: described gearing comprises drive link side lever (2), an end of drive link side lever (2) is fixed on the middle and lower part of drive link (1); It also comprises rotor wheel (12), motor (14), counter (15) and power wheel fixed support (16), rotor wheel (12) is fixed on the power wheel fixed support (16), and rotor wheel (12) is provided be used to the rotor wheel nose bar (13) of stirring drive link side lever (2); Counter (15) links to each other with rotor wheel (12), and rotor wheel (12) is driven by motor (14); The left and right sides of described drive link sleeve (5) inwall is arranged with projection, and the left and right sides of drive link (1) outer wall is arranged with the groove that is complementary with it.
4. cement-based gelling material according to claim 3 and elastic modulus of concrete performance testing device, it is characterized in that: the front end of described power wheel nose bar (13) is circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047805 CN203069466U (en) | 2013-01-29 | 2013-01-29 | Device for testing impact resistance of cement-based binding material and concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047805 CN203069466U (en) | 2013-01-29 | 2013-01-29 | Device for testing impact resistance of cement-based binding material and concrete |
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| CN203069466U true CN203069466U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320047805 Expired - Lifetime CN203069466U (en) | 2013-01-29 | 2013-01-29 | Device for testing impact resistance of cement-based binding material and concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352829A (en) * | 2015-11-27 | 2016-02-24 | 太原理工大学 | Compressibility determination device for rammed cement soil and determination method for compression modulus |
| CN105571962A (en) * | 2016-03-01 | 2016-05-11 | 南京理工大学 | Falling hammer impact test device |
| CN106226175A (en) * | 2016-08-29 | 2016-12-14 | 安徽凯达能源科技有限公司 | Blade of wind-driven generator intensity detecting device |
| CN106290013A (en) * | 2016-07-20 | 2017-01-04 | 南京理工大学 | Fixed pulley formula falling weight impact test device |
| CN108051322A (en) * | 2017-11-30 | 2018-05-18 | 北京航空航天大学 | A kind of concrete fatigue impact test apparatus and its test method |
| CN109060574A (en) * | 2018-08-22 | 2018-12-21 | 王真 | A kind of hydraulic engineering concrete test device and method |
| CN109406340A (en) * | 2018-12-25 | 2019-03-01 | 浙江大学 | Hammer the device and method of prepressing type test cartridge connection structure compactness of grouting |
-
2013
- 2013-01-29 CN CN 201320047805 patent/CN203069466U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352829A (en) * | 2015-11-27 | 2016-02-24 | 太原理工大学 | Compressibility determination device for rammed cement soil and determination method for compression modulus |
| CN105352829B (en) * | 2015-11-27 | 2018-02-02 | 太原理工大学 | Rammed concrete compressibility determines the determination method of device and modulus of compressibility |
| CN105571962A (en) * | 2016-03-01 | 2016-05-11 | 南京理工大学 | Falling hammer impact test device |
| CN106290013A (en) * | 2016-07-20 | 2017-01-04 | 南京理工大学 | Fixed pulley formula falling weight impact test device |
| CN106226175A (en) * | 2016-08-29 | 2016-12-14 | 安徽凯达能源科技有限公司 | Blade of wind-driven generator intensity detecting device |
| CN108051322A (en) * | 2017-11-30 | 2018-05-18 | 北京航空航天大学 | A kind of concrete fatigue impact test apparatus and its test method |
| CN109060574A (en) * | 2018-08-22 | 2018-12-21 | 王真 | A kind of hydraulic engineering concrete test device and method |
| CN109060574B (en) * | 2018-08-22 | 2020-11-17 | 天长市水电建筑安装工程公司 | Concrete testing device and method for hydraulic engineering |
| CN109406340A (en) * | 2018-12-25 | 2019-03-01 | 浙江大学 | Hammer the device and method of prepressing type test cartridge connection structure compactness of grouting |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |