CN212693781U - Concrete shrinkage test device - Google Patents
Concrete shrinkage test device Download PDFInfo
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- CN212693781U CN212693781U CN202021170795.8U CN202021170795U CN212693781U CN 212693781 U CN212693781 U CN 212693781U CN 202021170795 U CN202021170795 U CN 202021170795U CN 212693781 U CN212693781 U CN 212693781U
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Abstract
The utility model relates to a concrete shrinkage test device, which comprises a base and a digital display dial indicator for measuring the shrinkage and expansion of a concrete block, wherein the concrete block is positioned on the base, two ends of the concrete block are respectively provided with a butt joint block and a connecting block, and the butt joint block and the connecting block are both fixedly connected with the base; a first ejector rod of the concrete block abuts against the abutting block, and a second ejector rod of the concrete block is close to the connecting block; a through hole is formed in the connecting block in a penetrating manner, a sleeve of the digital display dial indicator is arranged in the through hole in a penetrating manner, and a measuring head of the digital display dial indicator is abutted against a second ejector rod of the concrete block; one side of the digital display dial indicator slides to be provided with a blocking block, the blocking block is in contact with the digital display dial indicator, the dial plate of the digital display dial indicator is clamped between the connecting block and the blocking block, and a fixing piece used for fixing the position of the blocking block is arranged on the blocking block. The utility model discloses have the effect that improves measured data's precision.
Description
Technical Field
The utility model belongs to the technical field of the technique that the concrete performance detected and specifically relates to a concrete shrinkage test device is related to.
Background
The concrete is a building material prepared by mixing cement, sand, stones and water according to a certain proportion. After the concrete is solidified, the concrete can expand and contract when meeting the change of the natural environment, and the expansion and contraction of the concrete can cause the cracking of a wall body, so that the expansion and contraction test of the concrete is very important.
The prior Chinese patent with the publication number of CN202794167U discloses a concrete expansion and contraction performance detector. The modeling assembly (the inside is a concrete block, and two ends of the concrete block in the length direction are ejector rods protruding out of the concrete block) is placed on the positioning boss of the detection platform. One ejector rod adopts the butt joint of the vertical disc a, the other ejector rod adopts the butt joint of the vertical disc b, a digital display dial indicator is arranged on the vertical disc b, and when the concrete expands or contracts, the digital display dial indicator positioned on one side of the concrete obtains the expansion distance of the concrete.
The above prior art solutions have the following drawbacks: because there is not corresponding fixing device on the digital display amesdial, the digital display amesdial just contacts with the ejector pin of concrete piece, is carrying out experimental in-process, and the digital display amesdial very easily receives external environment's influence to produce slight removal, and then leads to the measured data of digital display amesdial not accurate enough.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a concrete shrinkage test device, it has the advantage that prevents that the digital display amesdial from producing the removal, and then improves measured data's precision.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a concrete shrinkage test device comprises a digital display dial indicator for measuring shrinkage and expansion of a concrete block and a base, wherein the concrete block is positioned on the base, two ends of the concrete block are respectively provided with a butting block and a connecting block, and the butting block and the connecting block are fixedly connected with the base; the first ejector rod of the concrete block abuts against the abutting block, and the second ejector rod of the concrete block is close to the connecting block; a through hole is formed in the connecting block in a penetrating manner, a sleeve of the digital display dial indicator is arranged in the through hole in a penetrating manner, and a measuring head of the digital display dial indicator abuts against a second ejector rod of the concrete block; one side of the digital display dial indicator is provided with a blocking block in a sliding mode, the blocking block is in contact with the digital display dial indicator, a dial plate of the digital display dial indicator is clamped between the connecting block and the blocking block, and a fixing piece used for fixing the position of the blocking block is arranged on the blocking block.
Through adopting above-mentioned technical scheme, can be with the rigidity of stopping the piece through the mounting, and then the position of digital display amesdial is fixed, and the connecting block can be with the dial plate centre gripping of digital display amesdial between the two with stopping the piece. When measuring data through the digital display amesdial, the digital display amesdial can not produce and remove, and then can be more accurate carry out the measurement of data.
The present invention may be further configured in a preferred embodiment as: the stop block is last fixedly connected with dovetail block, the dovetail that corresponds with dovetail block is seted up along concrete block to digital display amesdial's direction on the base, dovetail block slides in the dovetail.
Through adopting above-mentioned technical scheme, block that the piece passes through the forked tail piece and slides and set up in the dovetail, can ensure to block stable slip of piece on the base.
The present invention may be further configured in a preferred embodiment as: the mounting include the threaded rod and with threaded rod screw-thread fit's nut, the threaded rod with block piece fixed connection, link up on the connecting block and set up the fixed orifices that corresponds with the threaded rod, the threaded rod is kept away from the one end that blocks the piece and is worn out fixed orifices and nut threaded connection.
Through adopting above-mentioned technical scheme, threaded rod and nut screw-thread fit can prevent to block the piece and slide to the one side of keeping away from the digital display amesdial, have guaranteed that the connecting block is stable with the digital display amesdial centre gripping with blocking the piece.
The present invention may be further configured in a preferred embodiment as: the side face, close to the dial plate of the digital display dial indicator, of the blocking block is provided with an arc-shaped groove, and the inner wall of the groove is in contact with the dial plate of the digital display dial indicator.
Through adopting above-mentioned technical scheme, the inner wall of recess is the arc can with the dial plate contact of digital display amesdial, further increase the area of contact of blockking piece and digital display amesdial, guaranteed that the connecting block is stable with the digital display amesdial centre gripping with blockking the piece.
The present invention may be further configured in a preferred embodiment as: the connecting block is close to the side of the dial plate of the digital display dial indicator and is provided with an abutting groove, and the abutting groove is arc-shaped, the inner wall of the abutting groove is in contact with the dial plate of the digital display dial indicator.
Through adopting above-mentioned technical scheme, the butt groove is the arc and can contacts with the dial plate of digital display amesdial, has increased the area of contact of connecting block and digital display amesdial, has guaranteed that the connecting block is stable with the digital display amesdial centre gripping with the stop block.
The present invention may be further configured in a preferred embodiment as: the top surface of the base is provided with a supporting plate, the top surface of the supporting plate is provided with a plurality of rotating grooves, each rotating groove is internally provided with a ball, and the balls roll in the corresponding rotating grooves.
Through adopting above-mentioned technical scheme, can produce relative roll between ball and the concrete piece when the concrete piece shrink or inflation after the ball sets up, the ball can become rolling friction with sliding friction, and then makes the digital display amesdial can embody the shrinkage or the inflation volume of little concrete, improves the precision that detects.
The present invention may be further configured in a preferred embodiment as: and the bottom of each rotating groove is communicated with the supporting plate and is provided with a dust leakage hole.
Through adopting above-mentioned technical scheme, the concrete piece can not exempt from the concrete piece that drops after shrink and inflation, and the piece if leak to rotating the roll that the inslot can obstruct the ball, through leaking the dirt hole, the piece can be leaked by rotating the inslot, and then prevents that the garrulous bits of concrete from hindering the roll of ball.
The present invention may be further configured in a preferred embodiment as: the butt piece is close to and has seted up the holding tank on the terminal surface of concrete piece, the first ejector pin of concrete piece is located the holding tank.
Through adopting above-mentioned technical scheme, first ejector pin is located the holding tank, can ensure that concrete piece and butt piece support tightly for placing of concrete piece is more stable.
To sum up, the utility model discloses a following at least one useful technological effect:
1. through the arrangement of the base, the abutting block, the connecting block, the through hole, the digital display dial indicator, the blocking block and the fixing piece, the digital display dial indicator can be clamped between the connecting block and the blocking block, and the measuring accuracy of the digital display dial indicator is improved;
2. through the setting of backup pad, rotation groove and ball, can become rolling friction with the sliding friction between concrete piece and the base, and then make the digital display amesdial can embody the shrinkage or the inflation volume of little concrete, improve the precision that detects.
Drawings
FIG. 1 is a schematic view showing the overall structure of a concrete shrinkage test apparatus according to this embodiment;
FIG. 2 is an exploded view of the concrete shrinkage test apparatus shown in this embodiment;
fig. 3 is a bottom view of the concrete shrinkage test apparatus shown in this example.
In the figure, 1, a base; 11. a butting block; 111. accommodating grooves; 12. connecting blocks; 121. a butt joint groove; 122. a fixing hole; 13. a through hole; 14. a dovetail groove; 15. a support plate; 152. a ball bearing; 153. a dust leakage hole; 16. cushion blocks; 2. a dial indicator is displayed in a digital mode; 21. a measuring head; 22. a sleeve; 23. a dial plate; 24. a dust cap; 3. a concrete block; 31. a first ejector rod; 32. a second ejector rod; 4. a blocking block; 41. a dovetail block; 42. a hole of abdication; 43. a groove; 44. a threaded rod; 45. and a nut.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, for the utility model discloses a concrete shrinkage test device, include base 1 and be used for measuring the digital display amesdial 2 of 3 shrinkage and inflation volumes of concrete piece. When the concrete block 3 is manufactured, concrete to be detected is poured into a mold, the first ejector rod 31 and the second ejector rod 32 are synchronously placed to form the concrete block 3, and finally the dry-formed concrete block 3 is taken out of the mold. The digital display dial indicator 2 comprises a measuring head 21, a sleeve 22, a dial 23 and a dust cap 24 which are connected in sequence.
Referring to fig. 1 and 2, the concrete block 3 is located on the base 1, the two ends of the concrete block 3 are respectively provided with the abutting block 11 and the connecting block 12, and the abutting block 11 and the connecting block 12 are both arranged along the vertical direction and are fixedly connected with the base 1. First ejector pin 31 of concrete piece 3 offsets with butt piece 11, has seted up holding tank 111 on butt piece 11 is close to the terminal surface of concrete piece 3, and holding tank 111 upwards extends the top surface that link up butt piece 11, can make things convenient for putting into and taking out of first ejector pin 31, and first ejector pin 31 of concrete piece 3 is located holding tank 111.
Referring to fig. 1 and 2, a second ejector rod 32 of the concrete block 3 is close to the connecting block 12, a through hole 13 is formed in the connecting block 12 in a penetrating mode along the horizontal direction, the digital dial indicator 2 is arranged along the horizontal direction, the sleeve 22 of the digital dial indicator 2 penetrates through the through hole 13, and a measuring head 21 of the digital dial indicator 2 abuts against the second ejector rod 32 of the concrete block 3 after penetrating through the through hole 13. One side that digital display amesdial 2 kept away from concrete piece 3 slides and is provided with the piece 4 that blocks that sets up along vertical direction, blocks fixedly connected with dovetail block 41 on the bottom surface of piece 4, offers the dovetail 14 that corresponds with dovetail block 41 along concrete piece 3 to digital display amesdial 2's direction on the base 1, and dovetail block 41 slides in dovetail 14.
Referring to fig. 1 and 2, the stop block 4 is in contact with the digital dial indicator 2, and the dial 23 of the digital dial indicator 2 is clamped between the connecting block 12 and the stop block 4. The blocking block 4 is provided with a yielding hole 42 along the horizontal direction, and the dustproof cap 24 of the digital display dial indicator 2 is positioned in the yielding hole 42. The side face, close to the dial plate 23 of the digital display dial indicator 2, of the blocking block 4 is provided with an arc-shaped groove 43, the groove 43 penetrates through the blocking block 4 in the vertical direction, and the inner wall of the groove 43 is in contact with the dial plate 23 of the digital display dial indicator 2. The connecting block 12 has been seted up the butt groove 121 near the side of digital display amesdial 2 dial plate 23, and the butt groove 121 link up connecting block 12 along vertical direction, and butt groove 121 is the inner wall of arc and butt groove 121 and contacts with digital display amesdial 2's dial plate 23.
Referring to fig. 1 and 2, the stopper 4 is provided with a fixing member for fixing the position of the stopper 4, and the fixing member includes two threaded rods 44 and nuts 45 respectively screw-engaged with the threaded rods 44. The threaded rod 44 is fixedly connected with the blocking block 4 and is positioned on one side, close to the digital display dial indicator 2, of the blocking block 4, the connecting block 12 is provided with a fixing hole 122 corresponding to the threaded rod 44 in a penetrating mode in the horizontal direction, and one end, far away from the blocking block 4, of the threaded rod 44 penetrates through the fixing hole 122 and is in threaded connection with the corresponding nut 45.
Referring to fig. 2 and 3, a supporting plate 15 is disposed on the top surface of the base 1, and four corners of the bottom surface of the supporting plate 15 are fixedly connected to the base 1 through four cushion blocks 16. A plurality of rotation grooves have been seted up to the top surface of backup pad 15, and each rotates the inslot and all is provided with ball 152, and ball 152 rolls and can not break away from the rotation groove in the rotation inslot that corresponds, and ball 152 has certain elasticity for the plastics material, fills in the rotation inslot after can producing deformation. The ball 152 contacts with concrete block 3, and the tank bottom of each rotation groove has all link up the backup pad 15 and has seted up the dust leakage hole 153 for spill the concrete piece in the rotation groove by the rotation inslot.
The implementation principle of the above embodiment is as follows:
when testing, place the concrete piece 3 after the shaping on ball 152, ensure that the first ejector pin 31 of concrete piece 3 places in holding tank 111 to in penetrating the sleeve 22 of digital display amesdial 2 through-hole 13, the measuring head 21 of digital display amesdial 2 worn out through-hole 13 this moment. Then the measuring head 21 of the digital display dial indicator 2 is abutted against the second ejector rod 32, and the blocking block 4 slides to ensure that the dial plate 23 of the digital display dial indicator 2 is clamped between the connecting block 12 and the blocking block 4. At the moment, the threaded rod 44 penetrates into the corresponding fixing hole 122, and finally, the nut 45 is in threaded connection with the threaded rod 44, so that the position of the digital dial indicator 2 is fixed. And detecting the shrinkage of the concrete on the digital display dial indicator 2 every certain time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a concrete shrinkage test device, is including being used for measuring digital display amesdial (2) of concrete piece (3) shrinkage and inflation volume, its characterized in that: the concrete block (3) is positioned on the base (1), two ends of the concrete block (3) are respectively provided with a butting block (11) and a connecting block (12), and the butting block (11) and the connecting block (12) are fixedly connected with the base (1); a first ejector rod (31) of the concrete block (3) abuts against the abutting block (11), and a second ejector rod (32) of the concrete block (3) is close to the connecting block (12); a through hole (13) is formed in the connecting block (12) in a penetrating manner, a sleeve (22) of the digital display dial indicator (2) penetrates through the through hole (13), and a measuring head (21) of the digital display dial indicator (2) is abutted against a second ejector rod (32) of the concrete block (3); one side of the digital display dial indicator (2) is provided with a blocking block (4) in a sliding mode, the blocking block (4) is in contact with the digital display dial indicator (2), a dial plate (23) of the digital display dial indicator (2) is clamped between the connecting block (12) and the blocking block (4), and a fixing piece used for fixing the position of the blocking block (4) is arranged on the blocking block (4).
2. The concrete shrinkage test apparatus of claim 1, wherein: the stop block (4) go up fixedly connected with dovetail piece (41), base (1) is gone up and is offered dovetail groove (14) that correspond with dovetail piece (41) along concrete block (3) to digital display amesdial (2) direction, dovetail piece (41) slide in dovetail groove (14).
3. The concrete shrinkage test apparatus of claim 2, wherein: the mounting includes threaded rod (44) and nut (45) with threaded rod (44) screw-thread fit, threaded rod (44) and block piece (4) fixed connection, link up on connecting block (12) and set up fixed orifices (122) that correspond with threaded rod (44), fixed orifices (122) and nut (45) threaded connection are worn out to the one end that blocks piece (4) is kept away from in threaded rod (44).
4. The concrete shrinkage test apparatus of claim 1, wherein: the side face, close to the dial plate (23) of the digital display dial indicator (2), of the blocking block (4) is provided with an arc-shaped groove (43), and the inner wall of the groove (43) is in contact with the dial plate (23) of the digital display dial indicator (2).
5. The concrete shrinkage test apparatus of claim 1, wherein: the connecting block (12) is close to the side face of the dial plate (23) of the digital display dial indicator (2) and is provided with a butt joint groove (121), and the butt joint groove (121) is arc-shaped, and the inner wall of the butt joint groove (121) is in contact with the dial plate (23) of the digital display dial indicator (2).
6. The concrete shrinkage test apparatus of claim 1, wherein: the top surface of base (1) is provided with backup pad (15), a plurality of rotation grooves have been seted up to the top surface of backup pad (15), each the rotation inslot all is provided with ball (152), ball (152) roll at the rotation inslot that corresponds.
7. The concrete shrinkage test apparatus of claim 6, wherein: the bottom of each rotating groove is provided with a dust leakage hole (153) which penetrates through the supporting plate (15).
8. The concrete shrinkage test apparatus of claim 1, wherein: the butt joint block (11) is close to and has seted up holding tank (111) on the terminal surface of concrete piece (3), first ejector pin (31) of concrete piece (3) are located holding tank (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021170795.8U CN212693781U (en) | 2020-06-22 | 2020-06-22 | Concrete shrinkage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021170795.8U CN212693781U (en) | 2020-06-22 | 2020-06-22 | Concrete shrinkage test device |
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| Publication Number | Publication Date |
|---|---|
| CN212693781U true CN212693781U (en) | 2021-03-12 |
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| CN202021170795.8U Active CN212693781U (en) | 2020-06-22 | 2020-06-22 | Concrete shrinkage test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034808A (en) * | 2021-11-03 | 2022-02-11 | 大连海事大学 | Cement-based material alkali aggregate reaction measuring device and measuring method |
| CN114280282A (en) * | 2021-12-29 | 2022-04-05 | 马前进 | Be used for concrete shrinkage test device |
-
2020
- 2020-06-22 CN CN202021170795.8U patent/CN212693781U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034808A (en) * | 2021-11-03 | 2022-02-11 | 大连海事大学 | Cement-based material alkali aggregate reaction measuring device and measuring method |
| CN114280282A (en) * | 2021-12-29 | 2022-04-05 | 马前进 | Be used for concrete shrinkage test device |
| CN114280282B (en) * | 2021-12-29 | 2023-10-03 | 马前进 | Be used for concrete shrinkage test device |
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