CN104990818A - Electromagnetic automatic impact tester for concrete - Google Patents
Electromagnetic automatic impact tester for concrete Download PDFInfo
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- CN104990818A CN104990818A CN201510321075.4A CN201510321075A CN104990818A CN 104990818 A CN104990818 A CN 104990818A CN 201510321075 A CN201510321075 A CN 201510321075A CN 104990818 A CN104990818 A CN 104990818A
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Abstract
The invention discloses an electromagnetic automatic impact tester for concrete. The electromagnetic automatic impact tester for concrete comprises a frame, an automatic rising and falling system, an impact system, a concrete positioning quick deslagging system and a comprehensive control system, wherein the automatic rising and falling system, the impact system, the concrete positioning quick deslagging system and the comprehensive control system are fixed to the frame, the automatic rising and falling system is connected with the impact system, the impact system is connected with the concrete positioning quick deslagging system, and the comprehensive control system is connected with the automatic rising and falling system and the impact system. According to the electromagnetic automatic impact tester for concrete, the structure of an impact hammer adopted in the impact process of a motor is simpler through structural design, and hammer falling quality is easier to control; friction between a guide rail and falling balls during falling is avoided; the situation that falling heights are inconsistent due to steel wire rope winding and hammer falling inertia force to cause influence on impact energy is avoided; concrete residue clearing is made more convenient and complete; manual configuration is not needed.
Description
Technical field
The present invention relates to civil engineering test apparatus field, specifically a kind of electromagnetic type elastic modulus of concrete experiment mechanism.
Background technology
Elastic modulus of concrete performance evaluation is the important indicator of concrete durability and splitting resistance, and it is the repeated stock concrete test block by certain altitude, makes concrete test block absorb kinetic energy and then causes the destruction of concrete test block.The detection of this index mainly adopts " CECS13-2009 fiber concrete test method ", generally adopts diameter 150mm, cake test specimen that thickness is 6mm ± 3mm.Weight of dropping hammer is 4kg ~ 20kg, and height of the fall is 400mm ~ 2000mm, impacts bulb diameter 63mm.
Current concrete impact tester forms primarily of base, support, steel ball, weight and weight jacking gear.It mainly contains following type:
(1) mode of manually handle or portable freely falling body impact of dropping hammer;
(2) provide power to realize lifting and the whereabouts of weight with cylinder or hydraulic jack, achieve the automation mechanized operation of impact test;
(3) drive to drop hammer with motor and wire rope and directly impact concrete sample;
But also there is many deficiencies in above-mentioned concrete impact testing machine.Be mainly:
(1) mode that manually handle or the portable freely falling body that drops hammer impact can not ensure the consistance of each shock height, and need to promote manually, its process very wastes time and energy.
(2) greatly enhance weight with hydraulic system or cylinder rise and the stability of dropping process for promoting to be contained in, but its impact process cycle is oversize.
(3) promote its lifting process of percussion mechanism of dropping hammer easily by the impact of lifting rope 6 with lifting rope 6, thus affect the consistance of its height of drop, the impact that there is friction force in dropping process and between guide pole and then affect impact velocity of dropping hammer.
(4) bottom steel ball fixedly causes the cleaning of test specimen waste material cumbersome, easily wastes time and causes waste material cleaning not thorough.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, impact fast, impacting that precision is high, full-automatic impulse test mechanism without the need to manually attaching troops to a unit.
The technical scheme realizing the object of the invention is:
A kind of electromagnetic type auto impact test instrument of the reinforcement of concrete, comprise support body and locate quick slag removing system and complex control system with the automatic lifting system be separately fixed on support body, impact system, concrete, automatic lifting system is connected with impact system, impulsion system and concrete are located quick slag removing system and are connected, and complex control system is connected with automatic lifting system, impact system respectively.
The top board that described support body comprises base plate, is arranged on the column on base plate and is arranged on above column, for fixed equipment each subsystem and ensure the stability of its subsystem.
Described automatic lifting system comprises reducing motor, motor cabinet, motor spool, spool cylinder and lifting rope, reducing motor is fixed on top board by motor cabinet, drive the sleeve on its front end spool and spool, lifting rope one end is connected with spool, the other end is through the location bamboo hat of impact system, be connected with the electromagnet of impact system, for the ascending, descending of electromagnet provides power, and reduced the inertial force of electromagnet by reducing motor.
Described impact system comprises location bamboo hat, time delay touching phase-change switch and counter, electromagnet, falling sphere, gearing, location bamboo hat is secured by bolts on column, and determine shock height by the height adjusting Bolt to position, be buffering touching switch and contact counter above the bamboo hat of location, for slowing down the inertial force of electromagnet in uphill process, record the number of shocks of electromagnet simultaneously, falling sphere is arranged on above gearing, contact with concrete test block below gearing, electromagnet is positioned at below lifting rope, it is great circle below it, the contour edge rotary cutting of roundlet and common tangent composition thereof is except forming.When electromagnet declines, its underpart curved surface contacts with falling sphere, and falling sphere is moved to the center of determining electromagnet, until electromagnet lower curved face overlaps with falling sphere sphere, when electromagnet rises, the conical surface that bamboo hat is located in the conical surface and the top at its top overlaps, and locates the conical surface top of bamboo hat, the hemispherical summit of gearing in same vertical axis.
The round pie of described gearing to be diameter be 160mm, cake thickness is 20mm, its smooth-sided compression candles, lower surface is hemisphere, hemispheroidal diameter is 63mm, there is the inclination angle of certain angle at the 10mm place, edge of gearing upper surface to cake center, and be transitioned into level gradually to its inclination angle, central area.
Described concrete is located quick slag removing system and is comprised concrete test block location-plate and lug, concrete test block location-plate is bolted on column, location-plate can move up and down along column direction, location-plate is provided with four pieces of lugs, the upper thickness of ledge arrangement is larger than the bottom thickness of structure, the lower surface of its thickness increasing portion contacts with gearing, and its effect is for fixed conveyor device, and makes load effectively be delivered to the centre of concrete sample.
Described complex control system comprises back up pad and controller, and controller is fixed in vertical rod by back up pad, and its effect mainly receives the contact information of touching switch and records the number of shocks with display electromagnet; Control motor in the acceleration of rise and fall process and deceleration, relax the inertial force of electromagnet to the impact of location bamboo hat; Collect the elevation information of the rise and fall of electromagnet to control energising and the electric discharge of electromagnet; By the impact energy that shock height, number of shocks and falling sphere Mass Calculation concrete sample bear.
The invention has the beneficial effects as follows:
1 and non-usage motor or hydraulic cylinder directly drive the lifting of weight, but use reducing motor band motor magnet to control falling sphere to promote and complete impact cycle with the mode of release;
2, by controlling the energising of electromagnet and the automation mechanized operation achieving impact test of discharging, having set up electromagnet location bamboo hat, having further increased the accuracy of falling sphere positioning height and the stability of dropping process;
3, carry out Comprehensive Control and calculating by complex control system, it is easy to operate, quick, improves the test speed of concrete impact testing machine;
4, by the auxiliary slagging-off of liftable base positioning system, the cleaning of test specimen waste material is made to become simple and quick;
In sum, electromagnetic type auto impact test instrument of the present invention, made ram hammer structure in the impact process of motor more simple by its structural design, its quality of dropping hammer more easily controls; The friction force between guide rail and falling sphere is avoided in dropping process; Avoid wirerope-winding and the inertial force that drops hammer to cause its height of drop disunity, and then cause impact energy to be affected; Make concrete cleaning waste slag easier, thorough; Without the need to manually attaching troops to a unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is electromagnetic type auto impact test instrument base and gearing cross section view.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind of electromagnetic type auto impact test instrument of the reinforcement of concrete, comprises frame structure, automatic lifting system, impact system, quick slag removing system located by concrete and complex control system is formed.
Frame structure: frame structure is the main frame of percussion mechanism, for fixed equipment each subsystem and ensure the structural stability of its subsystem.Mainly comprise top board 12, base plate 15 and vertical rod 13.Be characterized in that column 13 is positioned on base plate 15, top board 12 is positioned at above column 13.
Automatic lifting system: automatic lifting system mainly comprises reducing motor 11, motor cabinet 19, motor spool 10, spool cylinder 8 and lifting rope 6.Its Main Function is for the lifting of electromagnet and landing provide power, and reduces the inertial force of electromagnet by reducing motor.Reducing motor 11 is fixed on top board by motor cabinet 19 and drives the sleeve 8 on its front end spool 10 and spool to control wire rope to the lifting of electromagnet and decline.
Impact system: impact system comprises location bamboo hat 7, time delay touching phase-change switch and counter 9, electromagnet 5, falling sphere 4, gearing 2.Contact with concrete test block 1 below gearing 2.Gearing 2 is modified node method of drive ball in the method introduced in " CECS13-2009 fiber concrete test method ".Gearing 2 is the cake shape of 160mm by diameter, and the thickness of cake is 20mm, its side surface smooth enough, and its lower surface is hemisphere, and hemispheroidal diameter is 63mm.There is the inclination angle of certain angle at the 10mm place, edge of percussion mechanism 2 upper surface to cake center, and is transitioned into level gradually to its inclination angle, central area.Its detailed construction is shown in accompanying drawing 2.
Electromagnet 5 is positioned at below lifting rope 6, for the contour edge rotary cutting of great circle, roundlet and common tangent thereof composition is except forming below it.When electromagnet 5 declines, its underpart curved surface contacts with falling sphere 4, and falling sphere 4 is moved to the center of determining electromagnet, until electromagnet lower curved face overlaps with falling sphere sphere.When electromagnet 5 rises, the conical surface that bamboo hat 7 is located in the conical surface and the top at its top overlaps.Locate the conical surface top of bamboo hat 7, the hemispherical summit of gearing in same vertical axis.
Location bamboo hat 7 is secured by bolts on column, and can determine shock height by the height adjusting Bolt to position.Being buffering touching switch and contact counter 9 above the bamboo hat of location, for slowing down the inertial force of electromagnet in uphill process, recording the number of shocks of electromagnet simultaneously.
Concrete is located quick slag removing system and is comprised: concrete test block location-plate 14 and lug 3.Concrete test block location-plate 14 is bolted on column 13, and location-plate 14 can move up and down along column 13 direction, and can be bolted.Location-plate 14 is provided with four pieces of lugs 3, the upper thickness of lug 3 structure is larger than the bottom thickness of structure.The lower surface of its thickness increasing portion contacts with gearing 2.Its effect is for fixed conveyor device 2, and makes load effectively be delivered to the centre of concrete sample.
Complex control system comprises: back up pad 18 and controller 17.Controller 17 is fixed on column 13 by back up pad 18.Its effect mainly receives the contact information the number of shocks recording electromagnet that cushion touching switch and contact counter 9; Control reducing motor 11 in the acceleration of rise and fall process and deceleration, relax the inertial force of electromagnet 5 to the impact of location bamboo hat 7; The elevation information collecting the rise and fall of electromagnet 5 controls energising and the electric discharge of electromagnet; By the impact energy that shock height, number of shocks and falling sphere Mass Calculation concrete sample 1 bear.
Automatic lifting system, impact system, concrete are located quick slag removing system and are fixed on frame structure; Jacking system is positioned at top board 12 top, is connected to the electromagnet 5 of impact system by lifting rope 6 through location bamboo hat 7.Concrete location fast slag tapping system is fixed on column 13 by its location-plate 14.Its lug 3 blocks the gearing 2 of impact system.Complex control system comprises and is fixed on the column 13 of opposite side, connects the reducing motor 11 of jacking system, the time delay touching phase-change switch of impact system and counter 9 and electromagnet 5 and carry out comprehensive coordination control to it by electric wire.
Concrete operation step of the present invention is as follows:
1) base plate 15 of testing machine is anchored on the basis of rigidity, and ensures base plate 15 level.
2) regulate the height of location bamboo hat, determine shock height, and be fixed by bolt.
3) promote location-plate 14, concrete test block 1 and gearing 2 are put into the region that location-plate 14 upper lug 3 surrounds.Transfer location-plate 14 and ensure that gearing 2 contacts with four pieces of lugs 3 and uses bolt stationary positioned plate 14.
4) be put on gearing 2 by falling sphere 4, switch on power, the spool of reducing motor starts to rotate, thus drives wire rope to make electromagnet 5 start to decline.In decline process, steel wire penetrating location bamboo hat 7, thus ensure that the verticality of electromagnet 5.
5) electromagnet 5 contacts with the falling sphere 4 on gearing 2 in decline process, makes falling sphere 4 mobile in the middle of gearing.Along with the decline of electromagnet 5, the sphere of falling sphere 4 overlaps with the inner concave of electromagnet 5 gradually.
6) when electromagnet 5 drops to maximum height, electromagnet 5 starts energising.Electromagnet 5 drives falling sphere 4 to promote together, and slowing down when near location bamboo hat reduces speed now, and touch phase-change switch and counter 9 contacts with buffering, until the cone-shaped top surface of electromagnet 5 overlaps with the conical surface of locating bamboo hat 7.Thus also determine the center of falling sphere 4 and the center of test block on same vertical axis.
7) electromagnet 5 power-off, impacts ball free-falling, impacts the gearing 2 be positioned at above test specimen 1.Gearing transfers the load on concrete test block, thus completes and circulate to the one-shot of test specimen 1.
8) often complete one-shot, laboratory technician observes the surface of a test specimen 1, and records number of shocks when Article 1 crack occurs, this number of shocks is just row number of shocks.
9) continue impact, record test block 1 with lug 3 have 3 faces to contact time number of shocks.This number of shocks is destruction number of shocks.
10) promote concrete location-plate 14 and remove test block waste residue.Load another test block.
11) it is calculate that the impact energy W1 consumed during style incipient crack and the impact energy W2 that destruction consumes from incipient crack to style presses
W=mgh×N
M be falling sphere weight, 4.5kg; G is gravity coefficient, gets 9.81N/kg; H is the distance that falls, 450mm; N is corresponding number of shocks.
In step 6), the top of electromagnet 5 is 45 degree of tapers.There is identical tapering with location bamboo hat 7, thus ensure that electromagnet 5 can overlap with location bamboo hat 7 when bringing up to maximum height.The summit of the location vertex of a cone of bamboo hat 7 and the hemisphere of concrete test block center and gearing 2 is in same vertical axis.Inner sunken face when electromagnet 5 declines below electromagnet 5 contacts with falling sphere 4, and falling sphere 4 is moved to the center of gearing.Electromagnet 5 constantly declines, until excise curved surface close contact with roundlet.Then promote electromagnet 5, contact the buffering of locating on bamboo hat when electromagnet 5 overlaps with the location bamboo hat 7 of magnet 5 and touch switch and counter 9.Make electromagnet power-off, release falling sphere 4, motor reverse rotation simultaneously declines and records falling sphere number of times.
Claims (7)
1. the electromagnetic type auto impact test instrument of a reinforcement of concrete, it is characterized in that: comprise support body and locate quick slag removing system and complex control system with the automatic lifting system be separately fixed on support body, impact system, concrete, automatic lifting system is connected with impact system, impulsion system and concrete are located quick slag removing system and are connected, and complex control system is connected with automatic lifting system, impact system respectively.
2. electromagnetic type auto impact test instrument according to claim 1, is characterized in that: the top board that described support body comprises base plate, is arranged on the column on base plate and is arranged on above column.
3. electromagnetic type auto impact test instrument according to claim 1, it is characterized in that: described automatic lifting system comprises reducing motor, motor cabinet, motor spool, spool cylinder and lifting rope, reducing motor is fixed on top board by motor cabinet, drive the sleeve on its front end spool and spool, lifting rope one end is connected with spool, the other end is through the location bamboo hat of impact system, be connected with the electromagnet of impact system, for the ascending, descending of electromagnet provides power, and reduced the inertial force of electromagnet by reducing motor.
4. electromagnetic type auto impact test instrument according to claim 1, it is characterized in that: described impact system comprises location bamboo hat, time delay touching phase-change switch and counter, electromagnet, falling sphere and gearing, location bamboo hat is secured by bolts on column, and determine shock height by the height adjusting Bolt to position, be buffering touching switch and contact counter above the bamboo hat of location, falling sphere is arranged on above gearing, contact with concrete test block below gearing, electromagnet is positioned at below lifting rope, it is great circle below it, the contour edge rotary cutting of roundlet and common tangent composition thereof is except forming, the conical surface top of location bamboo hat, the hemispherical summit of gearing is in same vertical axis.
5. electromagnetic type auto impact test instrument according to claim 4, it is characterized in that: the round pie of described gearing to be diameter be 160mm, cake thickness is 20mm, its smooth-sided compression candles, lower surface is hemisphere, hemispheroidal diameter is 63mm, has the inclination angle of certain angle, and be transitioned into level gradually to its inclination angle, central area at the 10mm place, edge of gearing upper surface to cake center.
6. electromagnetic type auto impact test instrument according to claim 1, it is characterized in that: described concrete is located quick slag removing system and comprised concrete test block location-plate and lug, concrete test block location-plate is bolted on column, location-plate can move up and down along column direction, location-plate is provided with four pieces of lugs, the upper thickness of ledge arrangement is larger than the bottom thickness of structure, and the lower surface of its thickness increasing portion contacts with gearing.
7. electromagnetic type auto impact test instrument according to claim 1, is characterized in that: described complex control system comprises back up pad and controller, and controller is fixed in vertical rod by back up pad.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510321075.4A CN104990818A (en) | 2015-06-12 | 2015-06-12 | Electromagnetic automatic impact tester for concrete |
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| CN201510321075.4A CN104990818A (en) | 2015-06-12 | 2015-06-12 | Electromagnetic automatic impact tester for concrete |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277450A (en) * | 2015-11-25 | 2016-01-27 | 华东交通大学 | Multi-source variable load impact experiment device |
| CN106501107A (en) * | 2016-12-12 | 2017-03-15 | 青岛英派斯健康科技股份有限公司 | Purse seine shock resistance testing equipment |
| CN107966375A (en) * | 2017-11-13 | 2018-04-27 | 东南大学 | A kind of detection device and method of elastic modulus of concrete performance |
| CN108414320A (en) * | 2018-03-29 | 2018-08-17 | 西京学院 | A kind of automatic ramming device of triaxial test disturbance soil sample and its control system |
| CN114459719A (en) * | 2022-03-14 | 2022-05-10 | 河南科技大学 | Horizontal impact test device |
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| CN204085833U (en) * | 2014-09-02 | 2015-01-07 | 山东英特力新材料有限公司 | A kind of testing apparatus for compound substance shelter model shock resistance |
| CN204116162U (en) * | 2014-09-25 | 2015-01-21 | 宁波新盛建材开发有限公司 | Anti-crack concrete auto impact testing machine |
| CN204944959U (en) * | 2015-06-12 | 2016-01-06 | 桂林电子科技大学 | A kind of for concrete electromagnetic type auto impact test instrument |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4426875A (en) * | 1981-12-14 | 1984-01-24 | Rca Corporation | Strain measurement |
| CN204085833U (en) * | 2014-09-02 | 2015-01-07 | 山东英特力新材料有限公司 | A kind of testing apparatus for compound substance shelter model shock resistance |
| CN204116162U (en) * | 2014-09-25 | 2015-01-21 | 宁波新盛建材开发有限公司 | Anti-crack concrete auto impact testing machine |
| CN204944959U (en) * | 2015-06-12 | 2016-01-06 | 桂林电子科技大学 | A kind of for concrete electromagnetic type auto impact test instrument |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277450A (en) * | 2015-11-25 | 2016-01-27 | 华东交通大学 | Multi-source variable load impact experiment device |
| CN105277450B (en) * | 2015-11-25 | 2018-01-19 | 华东交通大学 | Multi-source varying load impact experiment apparatus |
| CN106501107A (en) * | 2016-12-12 | 2017-03-15 | 青岛英派斯健康科技股份有限公司 | Purse seine shock resistance testing equipment |
| CN107966375A (en) * | 2017-11-13 | 2018-04-27 | 东南大学 | A kind of detection device and method of elastic modulus of concrete performance |
| CN108414320A (en) * | 2018-03-29 | 2018-08-17 | 西京学院 | A kind of automatic ramming device of triaxial test disturbance soil sample and its control system |
| CN108414320B (en) * | 2018-03-29 | 2020-12-22 | 西京学院 | Triaxial test disturbed soil sample automatic compaction device and control system thereof |
| CN114459719A (en) * | 2022-03-14 | 2022-05-10 | 河南科技大学 | Horizontal impact test device |
| CN114459719B (en) * | 2022-03-14 | 2024-03-15 | 河南科技大学 | Horizontal impact test device |
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Application publication date: 20151021 |