CN203561542U - Improved concrete shear compression apparatus - Google Patents
Improved concrete shear compression apparatus Download PDFInfo
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- CN203561542U CN203561542U CN201320637501.1U CN201320637501U CN203561542U CN 203561542 U CN203561542 U CN 203561542U CN 201320637501 U CN201320637501 U CN 201320637501U CN 203561542 U CN203561542 U CN 203561542U
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- pedestal
- oil pressure
- screw
- pressure
- reaction support
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Abstract
The utility model discloses an improved concrete shear compression apparatus which comprises a base frame, wherein a first counterforce support and a second counterforce support with adjustable mounting positions are mounted on the base frame; the first counterforce support is connected with a detachable oil pressure mechanical jack; a digital pressure gauge is mounted on the oil pressure mechanical jack; a screw of the oil pressure mechanical jack is vertical to the base frame and is sleeved with a T-shaped internal hexagonal wrench for applying shear compression force; a pressure head matched with a pressure bearing plate is arranged on the side surface of the oil pressure mechanical jack; the pressure bearing plate is mounted on a spherical head of a spherical head screw rod; and the spherical head screw rod is rotatably mounted in a screw hole of the second counterforce support. The improved concrete shear compression apparatus disclosed by the utility model has the advantages of high detection precision, high working efficiency and convenience in operation.
Description
Technical field
The utility model relates to a kind of modified concrete shearing press instrument.
Background technology
At present, current version concrete shearing press instrument basic model is all manufactured production according to CECS 278-2010 < < method for detecting compressive strength of concrete through shearing-press technical regulation > >.The deficiency that current version concrete shearing press instrument exists is as follows:
1. " screw rod " adjustable range, screw rod is more elongated, and spiro rod length is about 500 ㎜.For compared with slender body, after being under pressure, if particularly concrete surface out-of-flatness or on-right angle are easily crooked or eccentric, make to detect and cannot carry out.
2. standard clause 4.1.1 clause explanation: the member maximum ga(u)ge that conventional concrete shearing press instrument can be cut pressure is 500 ㎜; For larger member, need the special shearing press instrument with longer pedestal of making.Because conventional concrete shearing press instrument pedestal is comparatively flat, after pressurized, easily produce lateral bending, therefore, conventional concrete shearing press instrument can only detect the concrete component of thickness≤500 ㎜.
3. clear distance approximately 20 ㎜ between " pressure head " and pedestal, distance is shorter, in practical operation, if concrete surface exists rendering layer (being generally 10 ㎜-30 ㎜), after must removing the rendering layer of the adjacent surface vertical with member pressure-bearing surface, could detect, workload is larger.
4. conventional concrete shearing press instrument is because " screw rod rocking handle " is placed in relative both sides with " wobble pump handle ", the required work space in both sides is larger, and two side positions fix, and cannot dismantle, if run into the narrow situation in space on one side, cannot operate or operate inconvenience.
5. conventional concrete shearing press instrument, because space between " pressure head ", " bearing plate " and " pedestal " is little, cannot directly be examined and determine with dynamometry calibrating installation, can only calibrate with special calibration block, and comparatively inconvenience, and accuracy of detection is had to certain influence.
In sum, current version concrete shearing press instrument is above not enough owing to existing, and has affected on the one hand the precision detecting, and the opposing party has increased workload, has reduced work efficiency.
Summary of the invention
The purpose of this utility model is to provide the modified concrete that a kind of accuracy of detection is high, work efficiency is high, easy to operate shearing press instrument.
For reaching goal of the invention the technical solution adopted in the utility model, be:
Modified concrete shearing press instrument, it is characterized in that: comprise pedestal, all adjustable the first reaction support, the second reaction supports of installation site are installed on described pedestal, on described the first reaction support, be connected with dismountable oil pressure mechanic jacks, in described oil pressure mechanic jacks, digital pressure gauge is installed, the screw rod of described oil pressure mechanic jacks is arranges vertical with pedestal, on it, be set with for applying the T-shaped allen key of shearing pressure, the side of described oil pressure mechanic jacks is provided with the pressure head with bearing plate cooperating; Described bearing plate is arranged on the bulb of ball screw, and described ball screw is rotatable to be arranged in the screw of the second reaction support.
Further, have uniform pedestal circular hole on described pedestal, described the first reaction support, the second reaction support all coordinate with pedestal circular hole the top that is arranged on pedestal by attachment screw.
Further, the length of the screw mandrel of described ball screw is 250mm.
Further, described pressure head lower surface is 40mm to the distance of pedestal upper surface.
Further, described oil pressure mechanic jacks is connected with the first reaction support by screw.
The utility model regulates the distance between pressure head and bearing plate by changing the installation site of the first reaction support and the second reaction support, so the screw mandrel contraction in length of ball screw, 50% of about current version concrete shearing press instrument spiro rod length.After being under pressure, screw mandrel can keep state of axial compression always, can not produce screw mandrel bending or eccentric compression phenomenon.
Pedestal of the present utility model adopts steel plate to make, and steel plate thickness can, according to concrete component thickness and stress calculative determination, can not produce lateral bending phenomenon.
The utility model has increased the clear distance between pressure head and pedestal, even if concrete surface has rendering layer, just can remove and can detect.
The utility model replaces the wobble pump of current version concrete shearing press instrument with oil pressure mechanic jacks, the screw rod of oil pressure mechanic jacks is vertical with concrete component, does not take both sides work space.Between oil pressure mechanic jacks and the first reaction support, be to be connected with screw, after screw dismounting, oil pressure mechanic jacks can directly be placed in the calibrating installation or other calibrating installation that reaction frame and calibrating instrument, consist of and examine and determine.
The beneficial effects of the utility model:
(1) ball screw Length Ratio current version concrete shearing press instrument shortens, and has reduced the too elongated pressurized of screw mandrel and has produced crooked or eccentric situation; Strengthened pressure head and pedestal clear distance, instrument also can be detected in the situation that needn't removing rendering layer.
(2) distance between pressure head and bearing plate adopts adjustment the first reaction support and the second reaction support installation site to regulate detection thickness, can detect > 80 ㎜ concrete components, has expanded range of application.
(3) modified concrete shearing press instrument adopts screw to regulate instrument and two lateral extents, can flexible to both sides work space, and current version concrete shearing press instrument is because position is fixing, cannot regulate both sides work space.
(4) with oil pressure mechanic jacks, replace the wobble pump of current version concrete shearing press instrument, significantly reduced cost of products, and damaged easy maintenance.
(5) oil pressure mechanic jacks is owing to being that screw connects, and carries out routine after detachable to examine and determine, and improved accuracy, strengthened practicality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is use schematic diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is further described, but the utility model is not confined to these embodiments.One skilled in the art would recognize that the utility model contained all alternativess, improvement project and the equivalents that within the scope of claims, may comprise.
With reference to Fig. 1, Fig. 2, modified concrete shearing press instrument, comprise pedestal 10, all adjustable the first reaction support 4, the second reaction supports 11 of installation site are installed on described pedestal 10, on described the first reaction support 4, be connected with dismountable oil pressure mechanic jacks 1, in described oil pressure mechanic jacks 1, digital pressure gauge 3 is installed, the screw rod 7 of described oil pressure mechanic jacks 1 is arranges vertical with pedestal, on it, be set with for applying the T-shaped allen key 6 of shearing pressure, the side of described oil pressure mechanic jacks 1 is provided with the pressure head 2 with bearing plate 12 cooperatings; Described bearing plate 12 is arranged on the bulb of ball screw 13, and described ball screw 13 is rotatable to be arranged in the screw of the second reaction support 11.
On described pedestal 10, have uniform pedestal circular hole 9, described the first reaction support 4, the second reaction support 11 all coordinate with pedestal circular hole 9 top that is arranged on pedestal 10 by attachment screw 8.
The length of the screw mandrel of described ball screw 13 is 250mm.
Described pressure head 2 lower surfaces are 40mm to the distance of pedestal 10 upper surfaces.
Described oil pressure mechanic jacks 1 is connected with the first reaction support 4 by screw 5.
The utility model regulates the distance between pressure head 2 and bearing plate 12 by changing the installation site of the first reaction support 4 and the second reaction support 11, so the screw mandrel contraction in length of ball screw 13,50% of about current version concrete shearing press instrument spiro rod length.After being under pressure, screw mandrel can keep state of axial compression always, can not produce screw mandrel bending or eccentric compression phenomenon.
The utility model has increased the clear distance between pressure head 2 and pedestal 10, even if concrete surface has rendering layer, just can remove and can detect.
The utility model replaces the wobble pump of current version concrete shearing press instrument with oil pressure mechanic jacks 1, the screw rod 7 of oil pressure mechanic jacks 4 is vertical with concrete component, does not take both sides work space.Between oil pressure mechanic jacks 1 and the first reaction support 4, be to be connected with screw 5, after screw 5 dismountings, oil pressure mechanic jacks 1 can directly be placed in the calibrating installation or other calibrating installation that reaction frame and calibrating instrument, consist of and examine and determine.
The course of work of the utility model use one is as follows:
(1), before operation, the duty of reply shearing press instrument checks, after confirming that its duty is good, can operate;
(2) according to concrete component 14 thickness, both sides work space size, the installation site of adjusting the first reaction support 4 and the second reaction support 11, makes distance between bearing plate 12 and pressure head 2 be slightly larger than concrete component 14 thickness;
(3) pressure head 2 axis are vertical with member pressure-bearing surface 15, and pressure head 2 faces of cylinder adjacent surface vertical with member pressure-bearing surface 15 should be tangent.As pressure-bearing surface has rendering layer 16, should slightly cut, make pressure head 2 withstand concrete surface, the rendering layer 16 of the adjacent surface vertical with member pressure-bearing surface 15 can cut;
(4) open digital pressure gauge 3, by reset key and make digital pressure gauge 3 in peak value hold mode;
(5) T-shaped allen key 6 is enclosed within on the screw rod 7 of oil pressure mechanic jacks 4, continuous uniform applies shearing pressure, and afterburning speed should be controlled in 1.0kN/s, until cut splenium position concrete destruction, shearing pressure when recording collapse state and destroying, is accurate to 0.1 kN.
Calculating and other requirement are undertaken by CECS 278-2010 < < method for detecting compressive strength of concrete through shearing-press technical regulation > >.
The course of work of the utility model use one is as follows:
(1) back out screw 5, take out oil pressure mechanic jacks 1(band pressure head);
(2) oil pressure mechanic jacks 1 is placed in to calibrating installation or other calibrating installation being comprised of reaction frame and calibrating instrument;
(3) T-shaped allen key 6 is enclosed within on the screw rod 7 of oil pressure mechanic jacks 1, continuous uniform is afterburning, examines and determine according to a conventional method.
Claims (5)
1. modified concrete shearing press instrument, it is characterized in that: comprise pedestal, all adjustable the first reaction support, the second reaction supports of installation site are installed on described pedestal, on described the first reaction support, be connected with dismountable oil pressure mechanic jacks, in described oil pressure mechanic jacks, digital pressure gauge is installed, the screw rod of described oil pressure mechanic jacks is arranges vertical with pedestal, on it, be set with for applying the T-shaped allen key of shearing pressure, the side of described oil pressure mechanic jacks is provided with the pressure head with bearing plate cooperating; Described bearing plate is arranged on the bulb of ball screw, and described ball screw is rotatable to be arranged in the screw of the second reaction support.
2. modified concrete shearing press instrument according to claim 1, is characterized in that: on described pedestal, have uniform pedestal circular hole, described the first reaction support, the second reaction support all coordinate with pedestal circular hole the top that is arranged on pedestal by attachment screw.
3. modified concrete shearing press instrument according to claim 1 and 2, is characterized in that: the length of the screw mandrel of described ball screw is 250mm.
4. modified concrete shearing press instrument according to claim 3, is characterized in that: described pressure head lower surface is 40mm to the distance of pedestal upper surface.
5. modified concrete shearing press instrument according to claim 4, is characterized in that: described oil pressure mechanic jacks is connected with the first reaction support by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320637501.1U CN203561542U (en) | 2013-10-15 | 2013-10-15 | Improved concrete shear compression apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320637501.1U CN203561542U (en) | 2013-10-15 | 2013-10-15 | Improved concrete shear compression apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561542U true CN203561542U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320637501.1U Expired - Fee Related CN203561542U (en) | 2013-10-15 | 2013-10-15 | Improved concrete shear compression apparatus |
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| Country | Link |
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| CN (1) | CN203561542U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290220A (en) * | 2017-08-01 | 2017-10-24 | 山东省建筑科学研究院 | A kind of portable steel strength detection impression instrument and its method of testing |
| CN108890442A (en) * | 2018-07-04 | 2018-11-27 | 湖北申田新材料科技有限公司 | A kind of saw blade burr removal device |
-
2013
- 2013-10-15 CN CN201320637501.1U patent/CN203561542U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290220A (en) * | 2017-08-01 | 2017-10-24 | 山东省建筑科学研究院 | A kind of portable steel strength detection impression instrument and its method of testing |
| CN107290220B (en) * | 2017-08-01 | 2024-03-15 | 山东建研检测检验科技有限公司 | Portable steel strength detection imprint instrument and test method thereof |
| CN108890442A (en) * | 2018-07-04 | 2018-11-27 | 湖北申田新材料科技有限公司 | A kind of saw blade burr removal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20201015 |
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| CF01 | Termination of patent right due to non-payment of annual fee |