CN209979403U - Cylinder concrete test block splitting device - Google Patents
Cylinder concrete test block splitting device Download PDFInfo
- Publication number
- CN209979403U CN209979403U CN201920479018.2U CN201920479018U CN209979403U CN 209979403 U CN209979403 U CN 209979403U CN 201920479018 U CN201920479018 U CN 201920479018U CN 209979403 U CN209979403 U CN 209979403U
- Authority
- CN
- China
- Prior art keywords
- splitting
- test block
- screw rod
- concrete test
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a cylinder concrete test block splitting device, includes lead screw slide rail system, base, test piece positioning system, splitting system and control switch, lead screw slide rail system installs in the rear end of base, and test piece positioning system installs the front end at the base, and splitting system installs on lead screw slide rail system, and control switch installs in lead screw slide rail system left side. Adopt the utility model discloses can stabilize and place cylinder concrete test block between two parties, make the test block axial section after the splitting level well intact, and perpendicular with the upper and lower bottom surface of test block.
Description
Technical Field
The utility model relates to a concrete durability test research field specifically is a cylinder concrete test block splitting device.
Background
The RCM method is an important means for measuring the diffusion coefficient of concrete chloride ions. In the RCM test, the cylindrical concrete test block needs to be split into two cylindrical bodies with the same size along the axial direction, and the split axial section of the test block needs to be flat and intact and is vertical to the upper bottom surface and the lower bottom surface of the test block. The traditional splitting method is that a splitting steel backing strip is firstly placed in the center of a ball seat of a pressure testing machine, then the lower bottom surface of a cylindrical test block (phi 100mm multiplied by 50 +/-2 mm) is placed on the backing strip in the middle, then another splitting steel backing strip is placed on the upper bottom surface of the test block in the middle and is parallel to the backing strip placed on the lower bottom surface, and finally, the pressure is slowly increased through the pressure testing machine until the concrete test block is split into two parts. The splitting method has the following defects: (1) the test block is difficult to keep a horizontal state in the pressurizing process of the pressure testing machine, so that the axial section cannot be kept vertical to the upper bottom surface and the lower bottom surface of the test block; (2) the contact surface of the filler strip and concrete is too large, so that the test block crushing belt after splitting is too wide, and the section of the test block is not flat; (3) when the pressure tester is manually operated, the pressure applying rate is not uniform, and the time for stopping loading needs to be determined visually, so that the test block is easy to break.
Chinese patent 201220373397.5 discloses a concrete cylinder splitting tensile test fixture, which installs the concrete test block between the upper and lower bearing plates, the wide edge of the upper and lower bearing plates is equipped with a filler strip along the long edge direction, then the upper bearing plate is applied with pressure by using a pressure tester, the test block is split along the axial direction. The device solves the defect (1) of the traditional splitting method through the matching of the upper rod hole group, the lower rod hole group and the side rod, but the used pad strip is consistent with the traditional splitting method, and the pressure tester is manually operated to carry out tests, so the defects (2) and (3) of the traditional splitting method still exist. Chinese patent 201020594964.0 discloses a split auxiliary device of concrete chloride ion diffusion coefficient test piece, installs cylinder concrete test block between apron and base, then exerts pressure to the apron through compression testing machine, utilizes the blade of apron below and the blade of base top to split the test block. Although the device solves the defect (2) of the traditional splitting method by adopting the triangular sharp edges aligned in parallel, the diameter of a hoop of the device is slightly larger than that of a test piece, the defect (1) of the traditional splitting method cannot be overcome, and the device still needs a compression testing machine, is difficult to control the splitting depth of a blade and cannot overcome the defect (3) of the traditional splitting method.
Disclosure of Invention
The utility model provides a cylinder concrete test block splitting device and splitting method can overcome the defect of traditional cylinder concrete test block splitting device and splitting method, makes the cylinder concrete test block section after the splitting level and smooth, and the axial section passes through the centre of a circle of bottom surface about the test block, and is perpendicular with upper and lower bottom surface.
The technical scheme of the utility model as follows: the utility model provides a cylinder concrete test block splitting device, includes lead screw slide rail system, base, test piece positioning system, splitting system and control switch, and concrete structure and relation of connection are: the screw rod slide rail system is arranged at the rear end of the base, the test piece positioning system is arranged at the front end of the base, the splitting system is arranged on the screw rod slide rail system, the control switch is arranged at the left side of the screw rod slide rail system,
the screw rod sliding rail system consists of a screw rod, a column guide rail, a rotary disc, a limit nut, a sliding seat and tightening bolts, wherein the screw rod is arranged in the middle of the column guide rail, the rotary disc is arranged at the upper end of the screw rod, the limit nut is arranged at the middle end of the screw rod, the sliding seat is arranged at the lower end of the screw rod, the tightening bolts are arranged at the two ends of the rear side of the column guide,
the test piece positioning system comprises a lower blade, two positioning screws, two shock absorption rubber pads, a base plate, a baffle plate and a push rod, wherein the lower blade is arranged in the middle of a base, the two positioning screws are respectively arranged at the left side and the right side of the rear end of the lower blade, the two shock absorption rubber pads are respectively arranged at the left side and the right side of the middle part of the lower blade, the base plate is arranged at the front part of the base, the baffle plate is arranged at the front part of the base plate,
the splitting system consists of a motor, a belt, a flywheel, a crankshaft slide block, a brake and an upper blade, wherein the motor is connected with the flywheel through the belt, the flywheel is arranged at the right end of the crankshaft slide block, the brake is arranged at the middle parts of the crankshaft slide block and the flywheel, the upper blade is arranged at the lower end of the crankshaft slide block,
the control switch is provided with three buttons of start, stop and splitting, wherein the start and stop buttons respectively drive the motor to start and stop working, and the splitting button drives the crankshaft slide block to move vertically.
The upper blade and the lower blade are triangular square combination bodies with the length of 150mm, the height of 31mm and the width of the bottom surface of 20 mm; the upper blade is arranged at the lower end of the crankshaft slide block, and the knife edge line faces outwards; the lower blade edge line and the upper blade edge line are in the same vertical plane and are parallel to each other.
The cushioning rubber pad is a cylinder with the diameter of 35mm and the height of 30 mm; the two shock absorption rubber pads are symmetrically arranged along the left side and the right side of the lower blade, the distance between the centers of the two cylindrical rubber pads is 60mm, the connecting line of the two centers of circles is perpendicularly intersected with the line of the knife edge of the lower blade, and the distance between the intersection point and the rear end point of the line of the knife edge is 60 mm.
The positioning screw rod is a cylindrical metal rod with the diameter of 6mm and the height of 130 mm; the two positioning screws are symmetrically arranged along the left side and the right side of the lower blade, the distance between two centers is 70mm, the connecting line of the two centers of circles is vertically intersected with the edge line of the lower blade, and the distance between the intersection point and the rear end point of the edge line is 32 mm.
The use method of the cylindrical concrete test block splitting device comprises the following steps:
(1) setting the minimum knife edge distance S of the upper blade and the lower blade: determining the minimum knife edge distance S of an upper blade and a lower blade according to the height H of a cylindrical concrete test block and the depth D of the upper blade into the test block, wherein digital scale lines on a stand column guide rail correspond to the minimum knife edge distance S of the upper blade and the lower blade one by one, loosening and tightening bolts and limiting nuts, closing a brake, manually rotating a flywheel, driving a crankshaft slide block to move to a lower limit position, rotating a rotary disc, driving a slide seat to move up and down, enabling the scale line numbers S on the stand column guide rail to be flush with the upper top surface of the slide seat, tightening the bolts and the limiting nuts, manually rotating the flywheel, driving the crankshaft slide block to move to the upper limit position, and opening the brake;
(2) placing a test block: placing the cylindrical concrete test block on the base plate, and pushing forwards by using the push rod until the concrete test block is close to the positioning screw rod;
(3) splitting the test block: when a start button is pressed down, the motor starts to work to drive the flywheel to rotate; the splitting button is pressed, the brake is closed along with the pressing, the crankshaft slide block moves downwards to drive the upper blade to move downwards at a high speed, the concrete test block is split into two flat parts, when the crankshaft slide block moves to the lower limit position and then moves upwards to the upper limit position, the brake is opened along with the crankshaft slide block, and the crankshaft slide block stops moving;
(4) taking out the split test block: and pressing a stop button to stop the motor and taking out the split test block.
The depth D (mm) of the upper knife edge for splitting into the concrete test block is 1-4 mm.
The minimum knife edge distance S (mm) between the upper knife edge and the lower knife edge is the distance between the upper knife edge and the lower knife edge when the upper knife edge moves to the lower limit position; can be determined by calculation from:
S＝H-D
in the formula, H is the height (mm) of the cylindrical concrete test block.
The utility model has the advantages that:
1. the test block can be stably placed by adopting the test piece positioning system, the positioning screws are symmetrically arranged, so that the upper blade and the lower blade pass through the circle centers of the upper bottom surface and the lower bottom surface of the cylindrical concrete test block and are positioned on the same axial section of the test block, and the defect that the axial section cannot be vertical to the upper bottom surface and the lower bottom surface of the test block due to the fact that the test block is difficult to keep a horizontal state in the pressurizing process of a pressure testing machine in the traditional splitting method is overcome.
2. The triangular blade overcomes the defect that the test block section is not flat due to too wide a test block crushing belt after splitting caused by too large contact surface of the filler strip and concrete in the traditional splitting method.
3. The splitting is impacted at high speed by adopting the blade, the splitting depth of the blade is accurately set, and the defect that the test block is easy to break due to the fact that the pressure applying speed is not uniform and the loading stopping time needs to be determined visually when a pressure testing machine is manually operated by a traditional splitting method is overcome.
Drawings
Fig. 1 is a schematic view of the overall structure of the cylinder concrete test block splitting device.
Fig. 2-1 is a schematic front view of a screw and slide rail system structure of the cylinder concrete test block splitting device.
Fig. 2-2 is a back schematic view of a screw and slide rail system structure of the cylinder concrete test block splitting device.
Fig. 3 is a schematic structural diagram of a test piece positioning system of the cylinder concrete test piece splitting device.
Fig. 4 is a schematic structural diagram of the splitting system of the cylinder concrete test block splitting device.
Fig. 5 is a schematic structural diagram of a control switch of the cylinder concrete test block splitting device.
Fig. 6-1 is a whole front effect diagram of a cylinder concrete test block after the cylinder concrete test block is split by a traditional splitting device.
Fig. 6-2 is a diagram of the effect of the whole back of a cylinder concrete test block after the cylinder concrete test block is split by a traditional splitting device.
Fig. 6-3 is a left half section effect diagram of a cylinder concrete test block after the cylinder concrete test block is split by a traditional splitting device.
Fig. 6-4 are right half-block section effect diagrams after the cylindrical concrete test block is split by the traditional splitting device.
Fig. 7-1 is a whole block front effect diagram of a cylinder concrete test block after being split by the invention.
Fig. 7-2 is a diagram of the effect of the whole block back surface of the cylinder concrete test block after the splitting of the invention.
Fig. 7-3 is a left half section effect diagram of a cylinder concrete test block after splitting by the invention.
Fig. 7-4 are right half-block section effect diagrams after the cylindrical concrete test block is split by adopting the invention.
Detailed Description
In order to make the content of the present invention more easily and clearly understood, the following description will be made in detail with reference to the accompanying drawings and the embodiments.
As shown in FIG. 1, cylinder concrete test block splitting device comprises lead screw slide rail system 1, base 2, test piece positioning system 3, splitting system 4 and control switch 5, and lead screw slide rail system 1 installs the rear end on base 2, and test piece positioning system 3 installs the front end at base 2, and splitting system 4 installs on lead screw slide rail system 1, and control switch 5 installs in lead screw slide rail system 1 left side.
As shown in fig. 2-1 and 2-2, the screw slide rail system 1 is composed of a screw 1.1, a column guide rail 1.2, a rotary table 1.3, a limit nut 1.4, a slide seat 1.5 and a tightening bolt 1.6, wherein the screw 1.1 is installed in the middle of the column guide rail 1.2, the rotary table 1.3 is installed at the upper end of the screw 1.1, the limit nut 1.4 is installed at the middle end of the screw 1.1, the slide seat 1.5 is installed at the lower end of the screw 1.1, and the tightening bolt 1.6 is installed at two ends of the rear side of the column guide rail 1.2.
As shown in fig. 3, the test piece positioning system 3 is composed of a lower blade 3.1, two positioning screws 3.2, two cushioning rubber pads 3.3, a backing plate 3.4, a baffle 3.5 and a push rod 3.6, wherein the lower blade 3.1 is installed in the middle of the base 2, the two positioning screws 3.2 are respectively installed on the left side and the right side of the rear end of the lower blade 3.1, the two cushioning rubber pads 3.3 are respectively installed on the left side and the right side of the middle of the lower blade 3.1, the backing plate 3.4 is installed on the front portion of the base 2, the baffle 3.5 is installed on the front portion of the backing plate 3.4, and the push rod 3.6.
As shown in fig. 4, the splitting system 4 is composed of a motor 4.1, a belt 4.2, a flywheel 4.3, a crankshaft slider 4.4, a brake 4.5 and an upper blade 4.6, the motor 4.1 is connected with the flywheel 4.3 through the belt 4.2, the flywheel 4.3 is installed at the right end of the crankshaft slider 4.4, the brake 4.5 is installed at the middle parts of the crankshaft slider 4.4 and the flywheel 4.3, and the upper blade 4.6 is installed at the lower end of the crankshaft slider 4.4.
As shown in fig. 5, the control switch 5 has three buttons, namely, a start button 5.1, a stop button 5.2 and a split button 5.3, wherein the start button 5.1 and the stop button 5.2 respectively drive the motor to start and stop, and the split button 5.3 drives the crank sliding block 4.4 to move vertically.
The use method of the cylindrical concrete test block splitting device comprises the following steps:
(1) setting the minimum knife edge distance S of the upper blade and the lower blade: the minimum knife edge distance S of the upper blade and the lower blade is determined to be H-D according to the height H of the cylindrical concrete test block and the depth D of the upper blade 4.6 splitting into the test block, and the digital scale lines on the upright column guide rails 1.2 correspond to the minimum knife edge distance S of the upper blade and the lower blade one to one. Loosening the tightening bolt 1.6 and the limiting nut 1.4, closing the brake 4.5, manually rotating the flywheel 4.3, driving the crankshaft slide block 4.4 to move to the lower limit position, rotating the rotary table 1.3, and driving the slide seat 1.5 to move up and down, so that the scale mark number S on the upright post guide rail 1.2 is flush with the upper top surface of the slide seat 1.5. The bolt 1.6 and the limit nut 1.4 are tightened, the flywheel 4.3 is manually rotated, the crankshaft slide block 4.4 is driven to move to an upper limit position, and the brake 4.5 is opened along with the movement;
(2) placing a test block: placing the cylindrical concrete test block on the base plate 3.4, and pushing forwards by using the push rod 3.6 until the concrete test block is close to the positioning screw rod 3.2;
(3) splitting the test block: when a button of 'start' 5.1 is pressed, the motor starts to work to drive the flywheel 4.3 to rotate; pressing a 'splitting' 5.3 button, closing a brake 4.5 along with the button, moving a crankshaft slide block 4.4 downwards to drive an upper blade 4.6 to move downwards at a high speed and impact and split the concrete test block into two smooth parts, moving the crankshaft slide block 4.4 upwards after moving to a lower limit position, opening the brake 4.5 along with the crankshaft slide block when moving to an upper limit position, and stopping the movement of the crankshaft slide block 4.4;
(4) taking out the split test block: and pressing a 'stop' 5.2 button to stop the motor and take out the split test block.
Example of the implementation
This example is a specific example for verifying the effectiveness of the device of the present invention, that is, according to the above-mentioned splitting device for cylindrical concrete test blocks, 14 cylindrical concrete test blocks with a diameter of 100mm, a height H of 50mm and strength indexes of C35-C55 were split.
As shown in fig. 6-1, 6-2, 6-3, 6-4, 7-1, 7-2, 7-3 and 7-4, the front effect diagram, the back effect diagram, the left half section effect diagram and the right half section effect diagram of the whole block after the cylinder concrete test block is split by the traditional splitting device, and the front effect diagram, the back effect diagram, the left half section effect diagram and the right half section effect diagram of the whole block after the splitting device is adopted. According to the effect diagram, the smoothness of the section of the cylinder concrete test block after splitting can be visually judged, and compared with the smoothness of the section of the cylinder concrete test block split by using a traditional splitting device, the smoothness of the section of the cylinder concrete test block is greatly improved. The effect diagrams of the 14 cylindrical concrete test blocks with the labels of C35-C55 after the splitting are all similar to the effect diagrams of the invention shown in the figure 7-1, the figure 7-2, the figure 7-3 and the figure 7-4, and the universal applicability and the effectiveness of the device of the invention in the concrete test blocks with different labels are verified.
Claims (4)
1. The utility model provides a cylinder concrete test block splitting device, includes lead screw slide rail system, base, test piece positioning system, splitting system and control switch, its characterized in that, concrete structure and link relation are: the screw rod slide rail system is arranged at the rear end of the base, the test piece positioning system is arranged at the front end of the base, the splitting system is arranged on the screw rod slide rail system, the control switch is arranged at the left side of the screw rod slide rail system,
the screw rod sliding rail system consists of a screw rod, a column guide rail, a rotary disc, a limit nut, a sliding seat and tightening bolts, wherein the screw rod is arranged in the middle of the column guide rail, the rotary disc is arranged at the upper end of the screw rod, the limit nut is arranged at the middle end of the screw rod, the sliding seat is arranged at the lower end of the screw rod, the tightening bolts are arranged at the two ends of the rear side of the column guide,
the test piece positioning system comprises a lower blade, two positioning screws, two shock absorption rubber pads, a base plate, a baffle plate and a push rod, wherein the lower blade is arranged in the middle of a base, the two positioning screws are respectively arranged at the left side and the right side of the rear end of the lower blade, the two shock absorption rubber pads are respectively arranged at the left side and the right side of the middle part of the lower blade, the base plate is arranged at the front part of the base, the baffle plate is arranged at the front part of the base plate,
the splitting system consists of a motor, a belt, a flywheel, a crankshaft slide block, a brake and an upper blade, wherein the motor is connected with the flywheel through the belt, the flywheel is arranged at the right end of the crankshaft slide block, the brake is arranged at the middle parts of the crankshaft slide block and the flywheel, the upper blade is arranged at the lower end of the crankshaft slide block,
the control switch is provided with three buttons of start, stop and splitting, wherein the start and stop buttons respectively drive the motor to start and stop working, and the splitting button drives the crankshaft slide block to move vertically.
2. The cylindrical concrete test block splitting device according to claim 1, wherein the upper and lower blades are a triangular square combination with a length of 150mm, a height of 31mm and a bottom width of 20 mm; the upper blade is arranged at the lower end of the crankshaft slide block, and the knife edge line faces outwards; the lower blade edge line and the upper blade edge line are in the same vertical plane and are parallel to each other.
3. The splitting device for the cylindrical concrete test blocks as claimed in claim 1, wherein the cushioning rubber pad is a cylinder with a diameter of 35mm and a height of 30 mm; the two shock absorption rubber pads are symmetrically arranged along the left side and the right side of the lower blade, the distance between the centers of the two cylindrical rubber pads is 60mm, the connecting line of the two centers of circles is perpendicularly intersected with the line of the knife edge of the lower blade, and the distance between the intersection point and the rear end point of the line of the knife edge is 60 mm.
4. The cylindrical concrete test block splitting device of claim 1, wherein the positioning screw is a cylindrical metal rod with a diameter of 6mm and a height of 130 mm; the two positioning screws are symmetrically arranged along the left side and the right side of the lower blade, the distance between two centers is 70mm, the connecting line of the two centers of circles is vertically intersected with the edge line of the lower blade, and the distance between the intersection point and the rear end point of the edge line is 32 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479018.2U CN209979403U (en) | 2019-04-10 | 2019-04-10 | Cylinder concrete test block splitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479018.2U CN209979403U (en) | 2019-04-10 | 2019-04-10 | Cylinder concrete test block splitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209979403U true CN209979403U (en) | 2020-01-21 |
Family
ID=69257245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920479018.2U Active CN209979403U (en) | 2019-04-10 | 2019-04-10 | Cylinder concrete test block splitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209979403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057698A (en) * | 2019-04-10 | 2019-07-26 | 广西大学 | A kind of cylindrical body concrete test block splitting device and splitting method |
-
2019
- 2019-04-10 CN CN201920479018.2U patent/CN209979403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057698A (en) * | 2019-04-10 | 2019-07-26 | 广西大学 | A kind of cylindrical body concrete test block splitting device and splitting method |
| CN110057698B (en) * | 2019-04-10 | 2024-04-09 | 广西大学 | Cylinder concrete test block splitting device and splitting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110057698B (en) | Cylinder concrete test block splitting device and splitting method | |
| CN210293886U (en) | Universal testing machine | |
| CN111024508A (en) | Building material strength detection device and detection method | |
| CN209979403U (en) | Cylinder concrete test block splitting device | |
| CN210269375U (en) | Pressure testing machine for material detection | |
| CN201110805Y (en) | Mobile phone sliding lid life test machine | |
| CN2848458Y (en) | Clamping device for drilling reinforcing tube of motorcycle frame | |
| CN206504947U (en) | A kind of fixture for being used to measure fiber concrete test specimen bending property | |
| CN2814394Y (en) | Automatic feeding mechanism for metal charpy impact test machine | |
| CN209764440U (en) | wheel friction performance testing device | |
| CN214538923U (en) | Composite sleeper shear strength detection device | |
| CN219179057U (en) | Highway engineering resistance to compression experimental apparatus | |
| CN210221662U (en) | Shearing mechanism and shearing clamp for universal material testing machine | |
| CN108548777B (en) | Automatic hundred check testing arrangement of corrosion-resistant work piece | |
| CN211784753U (en) | Experimental centering device of concrete sample compressive strength | |
| CN105241763A (en) | Hydraulic rotary table glass testing machine with zinc alloy impact hammer and wheel pressing plate | |
| CN211927556U (en) | Compression test device is used in gasket production | |
| CN216978665U (en) | Concrete member rupture and compression strength measuring device | |
| CN216978631U (en) | Municipal administration road concrete intensity check out test set | |
| CN113654896A (en) | Concrete quality detection device for hydraulic engineering | |
| CN220305053U (en) | Static shearing resistance detection device for assembled perforated steel plate connecting piece | |
| CN211148268U (en) | Cement resistance to compression detects anchor clamps | |
| CN219695009U (en) | Self-lifting ultrasonic detection equipment | |
| CN220304985U (en) | Impact rammer test platform | |
| CN216275867U (en) | Static pressure high-strength prestressed concrete pipe pile body stress testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |