CN105319133A - Concrete pressure testing method - Google Patents
Concrete pressure testing method Download PDFInfo
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- CN105319133A CN105319133A CN201510900996.6A CN201510900996A CN105319133A CN 105319133 A CN105319133 A CN 105319133A CN 201510900996 A CN201510900996 A CN 201510900996A CN 105319133 A CN105319133 A CN 105319133A
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Abstract
The invention belongs to the technical field of concrete measurement and discloses a concrete pressure testing method. The method comprises the following steps: (1) putting a concrete test piece in a positioning line frame of a lower pressing plate; (2) starting a rotating motor, wherein the rotating motor drives a driving gear to rotate anticlockwise, and a first rack moves downwards and drives an upper moving rod to move downwards, so that an upper pressing plate moves downwards; (3) upwards moving a second rack meshed with the driving gear when the step (2) is performed, wherein the concrete test piece is pressed between the lower pressing plate and the upper pressing plate; and (4) allowing the concrete test piece to reach the highest sustainable pressure and breaking when the driving gear continuously rotates anticlockwise, changing instantaneous pressure detected by a pressure sensor to be 0, detecting the instantaneously changing pressure value detected by a central processing unit connected with the pressure sensor, and taking the maximum pressure value detected before the pressure signal is changed to be 0 as the highest sustainable pressure value of concrete time. According to the scheme, due to a single power source, the maximum compressive strength of concrete can be tested. Compared with the traditional concrete pressure method, the method disclosed by the invention has the advantages that the energy consumption is low, and the test is relatively efficient.
Description
Technical field
The invention belongs to concrete field of measuring technique.
Background technology
Concrete pressure machine is mainly used in the compressive strength of testing the building materials test blocks such as concrete, cement, engineering brick, fire resistive material, also can be used for the test of the compressive strength of other nonmetallic materials.Existing concrete pressure proving installation machine measuring accuracy is limited, can not the actual performance of reactor product well.This concrete pressure machine is primarily of main frame, the composition such as hydraulic system and load cell, wherein main frame is primarily of upper beam, column, adjusting screw and handwheel, bearing plate, the composition such as oil cylinder and piston, between leading screw end and top board, movable ball seat is housed, during operation after top board bottom surface contacts with test specimen end face, automatically the trickle degree of tilt of concrete sample short transverse can be adapted to, two planes are made to contact with each other comprehensively, thus degree of making part uniform force, according to test specimen size, rotatable handwheel and leading screw, suitably to regulate test space, lower platen end face is carved with location wire frame, concrete sample is convenient to be placed on center.
The lower platen of this concrete pressure machine moves by hydraulic oil cylinder driving, during use, first adjust the position of top board, restart oil cylinder, make lower platen moves, thus make the concrete sample pressurized between upper and lower pressing plate, the sensor being arranged on top board receives pressure signal, the central processing unit be connected with sensor continues the pressurized situation observing concrete sample, and the pressure condition when time of recording breaks, to determine that the maximum of concrete time can bear pressure.The shortcoming of the method for this measurement concrete time is: the movement of top board is controlled by screw mandrel, the movement of lower platen is controlled by oil cylinder, two actuating units (driving the actuating unit of screw mandrel and oil cylinder) are needed to provide power for this concrete pressure machine, energy consumption is excessive, and when installing two actuating units, step is also comparatively loaded down with trivial details.
Summary of the invention
The invention is intended to provide a kind of concrete pressure method of testing by utilizing single actuating unit to reduce energy consumption.
Concrete pressure method of testing in this programme, comprises the steps:
1. concrete sample test specimen is placed in the location wire frame of lower platen;
2. start electric rotating machine, electric rotating machine drives driving gear to rotate counterclockwise, and the first tooth bar moves down and drives carriage release lever to move down, thus top board moves down;
3. while 2. step occurs, the second tooth bar engaged with driving gear moves, L shape drive link drives on lower carriage release lever and moves, lower platen with on move, thus between the compacted lower platen of concrete sample and top board;
4. due on lower platen with pressure transducer, when driving gear continues to rotate counterclockwise, concrete sample occurs broken after reaching the maximum pressure that can bear, the instantaneous pressure that now pressure transducer detects is changed to 0, the central processing unit be connected with pressure transducer detects the pressure value of this instantaneous variation, pressure signal is become the maximum force value of bearing of the 0 maximum pressure numerical value detected before as the concrete time.
Beneficial effect: electric rotating machine is as unique power source, start operated motor, the rotating force that electric rotating machine exports is transformed into the power vertically by tooth bar (the first tooth bar and the second tooth bar), first rack drives top board moves down, second rack drives lower platen moves, thus make concrete sample be pressed between top board and lower platen, process with central authorities the pressure transducer be connected due to lower platen, can monitor the pressurized situation of concrete time, when occurring that instantaneous pressure is 0, the maximum pressure numerical value that change 0 then detects by central processing unit is before as the maximum force value (i.e. maximum compressive strength) of bearing of concrete time.The present invention is by single power source, and can realize testing concrete maximum compressive strength, compare traditional concrete pressure method, energy consumption is lower, tests more efficient.
Further, long-armed and second rack welding of described L shape drive link, the galianconism portion of L shape drive link welds with lower carriage release lever, connects more firm, prevents the second tooth bar and L shape drive link from departing from.
Further, be connected between described top board with upper carriage release lever by movable ball seat, movable ball seat can make top board automatically adapt to the trickle degree of tilt of concrete sample short transverse, thus degree of making part uniform force.
Further, described driving gear is fixed in frame by rolling bearing, and electric rotating machine can drive driving gear to rotate.
Accompanying drawing explanation
Fig. 1 is the structural representation of concrete pressure proving installation.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference numeral in Figure of description 1 comprises: top base 1, bottom base 2, top board 3, lower platen 4, upper carriage release lever 5, lower carriage release lever 6, movable ball seat 7, connecting link 8, first tooth bar 9, driving gear 10, second tooth bar 11, L shape drive link 12.
Embodiment concrete pressure method of testing uses concrete pressure proving installation as shown in Figure 1: comprise frame, this frame is bolted the top base 1, the bottom base 2 that are parallel to each other, column is furnished with between top base 1 and bottom base 2, top base 1 has vertical upper shaft hole, the position that bottom base 2 is relative with this upper shaft hole has lower shaft hole, and upper shaft hole and the interior all interference fit of lower shaft hole have sliding bearing.
Upper carriage release lever 5 coordinates with the sliding bearing in upper shaft hole, the lower end of upper carriage release lever 5 is connected with top board 3 by movable ball seat 7, the upper end of upper carriage release lever 5 is welded with horizontal connecting link 8, and this connecting link 8 welds with the rear flank of the first tooth bar 9 that frame is vertically arranged.Frame is combined with driving gear 10 by rolling bearing, and this driving gear 10 is connected by shaft coupling with the output shaft of electric rotating machine (this electric rotating machine is arranged in frame).The left side of this driving gear 10 and the flank engagement of the first tooth bar 9.
Lower carriage release lever 6 coordinates with the sliding bearing in lower shaft hole, the upper end of lower carriage release lever 6 with the plate face of this lower platen 4 of lower platen 4(is carved with locate wire frame) bottom surface weld, the lower end of lower carriage release lever 6 and the galianconism portion of L shape drive link 12 are bolted to connection, the long-armed portion of this L shape drive link 12 to be slidably fitted in frame and vertically to arrange, with the second tooth bar 11 on the left of the long-armed portion of this L shape drive link 12, the flank of tooth of this second tooth bar 11 engages with the right side of driving gear 10.
The present embodiment concrete pressure method of testing, comprises the steps:
1. concrete sample test specimen is placed in the location wire frame of lower platen 4;
2. start electric rotating machine, electric rotating machine drives driving gear 10 to rotate counterclockwise, and the first tooth bar 9 moves down and drives carriage release lever 5 to move down, thus top board 3 moves down;
3. while 2. step occurs, the second tooth bar 11 engaged with driving gear 10 moves, L shape drive link 12 drives on lower carriage release lever 6 and moves, lower platen 4 with on move, thus between the compacted lower platen 4 of concrete sample and top board 3;
4. due on lower platen 4 with pressure transducer, when driving gear 10 continues to rotate counterclockwise, concrete sample occurs broken after reaching the maximum pressure that can bear, the instantaneous pressure that now pressure transducer detects is changed to 0, the central processing unit be connected with pressure transducer detects the pressure value of this instantaneous variation, pressure signal is become the maximum force value of bearing of the 0 maximum pressure numerical value detected before as the concrete time.
Claims (4)
1. concrete pressure method of testing, is characterized in that,
1. concrete sample test specimen is placed in the location wire frame of lower platen;
2. start electric rotating machine, electric rotating machine drives driving gear to rotate counterclockwise, and the first tooth bar moves down and drives carriage release lever to move down, thus top board moves down;
3. while 2. step occurs, the second tooth bar engaged with driving gear moves, L shape drive link drives on lower carriage release lever and moves, lower platen with on move, thus between the compacted lower platen of concrete sample and top board;
4. due on lower platen with pressure transducer, when driving gear continues to rotate counterclockwise, concrete sample occurs broken after reaching the maximum pressure that can bear, the instantaneous pressure that now pressure transducer detects is changed to 0, the central processing unit be connected with pressure transducer detects the pressure value of this instantaneous variation, pressure signal is become the maximum force value of bearing of the 0 maximum pressure numerical value detected before as the concrete time.
2. concrete pressure method of testing according to claim 1, is characterized in that: long-armed and second rack welding of described L shape drive link, and the galianconism portion of L shape drive link welds with lower carriage release lever.
3. concrete pressure method of testing according to claim 2, be is characterized in that: be connected by movable ball seat between described top board with upper carriage release lever.
4. concrete pressure method of testing according to claim 3, is characterized in that: described driving gear is fixed in frame by rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900996.6A CN105319133A (en) | 2015-12-09 | 2015-12-09 | Concrete pressure testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900996.6A CN105319133A (en) | 2015-12-09 | 2015-12-09 | Concrete pressure testing method |
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| Publication Number | Publication Date |
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| CN105319133A true CN105319133A (en) | 2016-02-10 |
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| CN201510900996.6A Pending CN105319133A (en) | 2015-12-09 | 2015-12-09 | Concrete pressure testing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865917A (en) * | 2016-04-20 | 2016-08-17 | 太仓宝达齿条有限公司 | Plastic rack compression resistance detection device |
| CN111398047A (en) * | 2020-05-26 | 2020-07-10 | 福州晋安尧琦侗科技有限公司 | Detection apparatus for concrete piece compressive strength |
| CN111982666A (en) * | 2020-08-11 | 2020-11-24 | 昆山博克电子材料有限公司 | Two-way clamping device for detecting printed circuit board |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865917A (en) * | 2016-04-20 | 2016-08-17 | 太仓宝达齿条有限公司 | Plastic rack compression resistance detection device |
| CN105865917B (en) * | 2016-04-20 | 2018-07-10 | 太仓宝达齿条有限公司 | A kind of plastics rack resistance to compression detection device |
| CN111398047A (en) * | 2020-05-26 | 2020-07-10 | 福州晋安尧琦侗科技有限公司 | Detection apparatus for concrete piece compressive strength |
| CN111982666A (en) * | 2020-08-11 | 2020-11-24 | 昆山博克电子材料有限公司 | Two-way clamping device for detecting printed circuit board |
| CN111982666B (en) * | 2020-08-11 | 2024-05-10 | 中山市丰云电子有限公司 | Bidirectional clamping device for printed circuit board detection |
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