Device for measuring self-shrinkage amount of self-compacting concrete
By using a bracket, slide rail, slider, and telescopic device in the self-compacting concrete shrinkage measurement device, combined with multiple laser rangefinders, the self-compacting shrinkage of self-compacting concrete specimens can be measured at multiple locations, solving the problem of single measurement location and improving measurement accuracy and precision.
Patent Information
- Application Number
- CN202520576436.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Existing self-compacting concrete shrinkage measurement devices can only measure at one location, which cannot fully reflect the overall shrinkage of the self-compacting concrete specimen, resulting in inaccurate measurements.
The system employs a bracket, slide rail, slider, steel box, and telescopic device, combined with multiple laser rangefinders. By adjusting the slider and telescopic device, the laser rangefinders can measure the self-shrinkage of self-compacting concrete specimens at multiple locations, including vertically, horizontally, and front-back, thus achieving overall shrinkage measurement.
This method improves the accuracy of measuring the autogenous shrinkage of self-compacting concrete, comprehensively reflects the overall shrinkage of the specimen, and enhances the accuracy of the measurement.
Smart Images
Figure CN223807814U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete measurement technical field especially relates to a kind of self-compacting concrete self-shrinkage measurement device. BACKGROUND
[0002] Self-compacting concrete is a kind of high-performance concrete, which has high fluidity, uniformity and stability, and can flow and fill the formwork space under the action of gravity without external vibration. During the hardening process, self-compacting concrete will produce self-shrinkage, leading to structural cracking and affecting its durability and safety. In order to evaluate the performance of self-compacting concrete and control the quality of the project, a measuring device is needed to measure the self-shrinkage of self-compacting concrete.
[0003] The existing self-compacting concrete self-shrinkage measurement device usually only measures at one position of the self-compacting concrete, which is single in measurement position and cannot reflect the overall shrinkage of the self-compacting concrete specimen, making it difficult to accurately measure the self-shrinkage of self-compacting concrete. SUMMARY
[0004] Therefore, the utility model provides a kind of self-compacting concrete self-shrinkage measurement device, and the main technical problem to be solved is to solve the problem of not fully reflecting the self-shrinkage of self-compacting concrete due to single measurement position.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of self-compacting concrete self-shrinkage measurement device, including support, the inner side of the support is fixedly connected with slide rail, the inside of the slide rail is movably connected with sliding block, the inner side of the slide rail is fixedly connected with fixed cylinder, steel box is placed between the fixed cylinder, the both sides in the support interior are fixedly connected with telescopic device, the inner side of the sliding block and the lower end of telescopic device are fixedly connected with laser ranging sensor, the steel box includes box body placed between the fixed cylinder, the box body is equipped with clamping groove on the front and back and upper and lower two sides, the top of the box body is fixedly connected with sealing plug, the front and back, upper and lower and left and right two sides of the box body are movably connected with embedded part.
[0006] By adjusting the sliding block and telescopic device, multiple laser ranging sensors correspond to multiple embedded parts, so that the laser ranging sensors can simultaneously measure the self-shrinkage of self-compacting concrete specimens in the steel box from top to bottom, left to right and front to back, thereby reflecting the overall shrinkage of the self-compacting concrete specimen and improving the measurement accuracy.
[0007] As a further description of the above technical scheme: the support includes a bottom plate, the both sides of the top of the bottom plate are fixedly connected with support column, and the top of the support column is fixedly connected with fixing sleeve.
[0008] By adopting the technical scheme, the support is used for supporting the fixing sleeve, and the fixing sleeve is used for fixing the slide rail.
[0009] As a further description of the above technical scheme: the slide rail comprises a rail body fixedly connected between the fixing sleeves, and an inner portion of the rail body is provided with a sliding groove.
[0010] By adopting the technical scheme, the sliding groove is used for the movement of the sliding block.
[0011] As a further description of the above technical scheme: the telescopic device comprises a connecting barrel fixedly connected in the inner portion of the fixing sleeve, an inner portion of the connecting barrel is movably connected with a screw rod, and an outer side of the screw rod is threadedly connected with a telescopic rod.
[0012] By adopting the technical scheme, the screw rod can rotate in the inner portion of the connecting barrel by being screwed, and the screw rod can drive the telescopic rod to ascend and descend in the inner portion of the connecting barrel by being forward rotated and reversely rotated, so that the position of the laser ranging sensor fixed at the lower end of the telescopic rod can be adjusted, and the laser ranging sensor can be aligned with the embedded parts on both sides of the box body to measure the autogenous shrinkage of the self-compacting concrete test piece on both sides.
[0013] As a further description of the above technical scheme: the fixing barrel comprises a barrel body fixedly connected to the inner side of the rail body, an inner portion of the barrel body is movably connected with a limiting plate, a spring is fixedly connected between the barrel body and the limiting plate, and a clamping plate is fixedly connected to the side of the limiting plate away from the spring.
[0014] By adopting the technical scheme, the side of the clamping plate close to the steel box is in an arc-shaped structure, and the clamping plate can be retracted into the barrel body when the clamping plate is pressed, so that the steel box can be smoothly placed between the fixing barrels.
[0015] As a further description of the above technical scheme: the sliding block comprises a block body movably connected in the inner portion of the rail body, and a screw bolt is threadedly connected in the inner portion of the block body.
[0016] By adopting the technical scheme, the block body can move in the sliding groove by unscrewing the screw bolt, and the position of the block body can be fixed by screwing, so that the position of the laser ranging sensor fixed in the inner side of the sliding block can be adjusted, the laser ranging sensor fixed in the inner side of the sliding block can correspond to the embedded parts on the front and back and on the upper and lower sides of the box body, and the autogenous shrinkage of the self-compacting concrete test piece on the front and back and on the upper and lower sides of the box body can be measured.
[0017] By adopting the above technical scheme, the self-compacting concrete autogenous shrinkage measuring device has at least the following beneficial effects:
[0018] Compared with the prior art, the self-compacting concrete self-shrinkage measuring device has the advantages that the self-shrinkage of the self-compacting concrete test piece on the upper, lower, left and right sides and the front and back sides can be measured simultaneously, the block body can move in the slide rail by loosening the bolt, the position of the laser ranging sensor fixed on the slide block can be adjusted, the laser ranging sensor can be aligned with the corresponding embedded parts on the front and back sides and the upper and lower sides of the box body by adjusting, the telescopic rod can be lifted in the connecting cylinder by loosening the screw rod in the forward and reverse directions, the position of the laser ranging sensor fixed on the lower end of the telescopic rod can be adjusted, the laser ranging sensor can be aligned with the embedded parts on the left and right sides of the box body by adjusting, the self-shrinkage of the self-compacting concrete test piece in the steel box on the upper, lower, left and right sides and the front and back sides can be measured simultaneously, and the shrinkage of the whole self-compacting concrete test piece can be reflected, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The whole structure schematic diagram of the self-compacting concrete self-shrinkage measuring device is provided.
[0020] Figure 2 The telescopic device sectional structure schematic diagram of the self-compacting concrete self-shrinkage measuring device is provided.
[0021] Figure 3 The fixed cylinder sectional structure schematic diagram of the self-compacting concrete self-shrinkage measuring device is provided.
[0022] Figure 4 The steel box whole structure schematic diagram of the self-compacting concrete self-shrinkage measuring device is provided.
[0023] Figure 5 The slide block whole structure schematic diagram of the self-compacting concrete self-shrinkage measuring device is provided.
[0024] Legend:
[0025] 1, support; 101, bottom plate; 102, support column; 103, fixed sleeve; 2, laser ranging sensor; 3, slide rail; 301, rail body; 302, sliding groove; 4, telescopic device; 401, connecting cylinder; 402, screw rod; 403, telescopic rod; 5, fixed cylinder; 501, cylinder body; 502, spring; 503, limiting plate; 504, clamping plate; 6, steel box; 601, box body; 602, clamping groove; 603, sealing plug; 604, embedded part; 7, slide block; 701, block body; 702, bolt. DETAILED DESCRIPTION
[0026] Refer toFigures 1-5 The utility model provides a kind of self-compacting concrete self-shrinkage measurement device, including support 1, the inner side of support 1 is fixedly connected with slide rail 3, the inside movable connection of slide rail 3 has slider 7, the inner side of slide rail 3 is fixedly connected with fixed cylinder 5, steel box 6 is placed between fixed cylinder 5, the both sides in support 1 are fixedly connected with telescopic device 4, the inner side of slider 7 and the lower end of telescopic device 4 are all fixedly connected with laser ranging sensor 2, laser ranging sensor 2 is used to detect the self-shrinkage of self-compacting concrete, and multiple laser ranging sensor 2 corresponds with multiple embedded parts 604, steel box 6 includes the box 601 placed between fixed cylinder 5, box 601 is equipped with clamping groove 602 before and after and upside and downside, clamping groove 602 is used to enter the clamping of plate 504, the top of box 601 is fixedly connected with sealing plug 603, sealing plug 603 is used to seal the self-compacting concrete in the inside of box 601, and box 601 is movably connected with embedded part 604 before and after, upside and downside and left and right sides, when self-compacting concrete self-shrinks, it can drive embedded part 604 to move to the inside of box 601, to make the position of embedded part 604 change, the self-shrinkage of self-compacting concrete can be known by detecting the movement of embedded part 604 by laser ranging sensor 2, when using, by pulling down sealing plug 603, so that self-compacting concrete can be poured into box 601, after filling box 601, sealing plug 603 is fixed to box 601, after the initial solidification of self-compacting concrete in box 601, steel box 6 is fixed between fixed cylinder 5, by making steel box 6 move between fixed cylinder 5, by constantly moving, so that box 601 can contact plate 504, and by extruding, so that plate 504 can be retracted into cylinder 501, to make steel box 6 move smoothly between fixed cylinder 5, and by constantly moving, so that plate 504 can be aligned with clamping groove 602, under the action of spring 502, so that plate 504 can be clamped into clamping groove 602, to stably fix steel box 6, then by loosening bolt 702, so that block 701 can move in slide rail 3, to make the position of laser ranging sensor 2 fixed on slider 7 can be adjusted, by adjusting, so that laser ranging sensor 2 can be aligned with corresponding embedded part 604 before and after and upside and downside of box 601, then by forward and reverse screwing screw 402, so that telescopic rod 403 can be lifted in the inside of connecting cylinder 401, to make the position of laser ranging sensor 2 fixed on the lower end of telescopic rod 403 can be adjusted, by adjusting, so that it can be aligned with embedded part 604 left and right sides of box 601, to measure the self-shrinkage of self-compacting concrete test piece in steel box 6 before and after, upside and downside and left and right sides simultaneously, to reflect the shrinkage of self-compacting concrete test piece as a whole, improve measurement precision.
[0027] Further, the support 1 comprises a bottom plate 101, both sides of the top of the bottom plate 101 are fixedly connected with a support column 102, the support column 102 is used for supporting a fixing sleeve 103, the top of the support column 102 is fixedly connected with the fixing sleeve 103, and the fixing sleeve 103 is used for fixing a slide rail 3.
[0028] Further, the slide rail 3 comprises a rail body 301 fixedly connected between the fixing sleeves 103, and a sliding groove 302 is arranged in the rail body 301 and used for the movement of a sliding block 7.
[0029] Further, the telescopic device 4 comprises a connecting barrel 401 fixedly connected in the fixing sleeve 103, a screw rod 402 movably connected in the connecting barrel 401, the screw rod 402 can rotate in the connecting barrel 401, the outer side of the screw rod 402 is threadedly connected with a telescopic rod 403, the screw rod 402 can rotate in the connecting barrel 401 by being screwed, and the screw rod 402 can drive the telescopic rod 403 to ascend and descend in the connecting barrel 401 by forward rotation and reverse rotation, so that the position of a laser ranging sensor 2 fixed at the lower end of the telescopic rod 403 can be adjusted, and the laser ranging sensor 2 can be aligned with embedded parts 604 on both sides of a box body 601 to measure the autogenous shrinkage of self-compacting concrete test pieces on both sides.
[0030] Further, the fixing barrel 5 comprises a barrel body 501 fixedly connected to the inner side of the rail body 301, a limiting plate 503 movably connected in the barrel body 501, a spring 502 fixedly connected between the barrel body 501 and the limiting plate 503, and a clamping plate 504 fixedly connected to the side, away from the spring 502, of the limiting plate 503, the side, close to a steel box 6, of the clamping plate 504 is in an arc-shaped structure, and the clamping plate 504 can be retracted into the barrel body 501 when being pressed, so that the steel box 6 can be smoothly placed between the fixing barrels 5.
[0031] Further, the sliding block 7 comprises a block body 701 movably connected in the rail body 301, a screw bolt 702 threadedly connected in the block body 701, the block body 701 can move in the sliding groove 302 by unscrewing the screw bolt 702, and the position of the block body 701 can be fixed by screwing, so that the position of the laser ranging sensor 2 fixed in the sliding block 7 can be adjusted, the laser ranging sensor 2 fixed in the sliding block 7 can correspond to the embedded parts 604 on the front and back and on the top and bottom of the box body 601, and the autogenous shrinkage of the self-compacting concrete test pieces on the front and back and on the top and bottom of the box body 601 can be measured.
[0032] Working principle: when using, the self-compacting concrete can be poured into the box 601 by pulling out the sealing plug 603, after filling the box 601, the sealing plug 603 is fixed to the box 601, after the self-compacting concrete in the box 601 is initially solidified, the steel box 6 is fixed between the fixing cylinders 5, by moving the steel box 6 between the fixing cylinders 5, by continuously moving, the box 601 can contact the clamping plate 504, and by extruding, the clamping plate 504 can be retracted into the cylinder body 501, so that the steel box 6 can be smoothly moved between the fixing cylinders 5, and by continuously moving, the clamping plate 504 can be aligned with the clamping groove 602, under the action of the spring 502, the clamping plate 504 can be clamped into the clamping groove 602, so that the steel box 6 is stably fixed, then by loosening the bolt 702, the block 701 can be moved in the slide rail 3, so that the position of the laser ranging sensor 2 fixed on the sliding block 7 can be adjusted, by adjusting, the laser ranging sensor 2 can be aligned with the corresponding embedded parts 604 on the front and rear and upper and lower sides of the box 601, then by forward and reverse screwing the screw rod 402, the telescopic rod 403 can be lifted in the inside of the connecting cylinder 401, so that the position of the laser ranging sensor 2 fixed on the lower end of the telescopic rod 403 can be adjusted, by adjusting, it can be aligned with the embedded parts 604 on the left and right sides of the box 601, so that the self-shrinkage of the self-compacting concrete test piece in the steel box 6 on the upper, lower, left and right sides and front and rear sides can be measured at the same time, so that the shrinkage of the whole self-compacting concrete test piece can be reflected, and the measurement precision is improved.
[0033] Finally, it should be pointed out that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.
Claims
1. A device for measuring the self-shrinkage of self-compacting concrete, comprising a support (1), characterized in that: The inner side of the support (1) is fixedly connected with a slide rail (3), the inner side of the slide rail (3) is movably connected with a sliding block (7), the inner side of the slide rail (3) is fixedly connected with a fixed cylinder (5), the fixed cylinder (5) is placed with a steel box (6), both sides of the inside of the support (1) are fixedly connected with an extension device (4), the inner side of the sliding block (7) and the lower end of the extension device (4) are fixedly connected with a laser ranging sensor (2), the steel box (6) comprises a box body (601) placed between the fixed cylinders (5), the front and rear and the upper and lower sides of the box body (601) are provided with clamping grooves (602), the top of the box body (601) is fixedly connected with a sealing plug (603), the front and rear, the upper and lower and the left and right sides of the box body (601) are movably connected with embedded parts (604).
2. The device for measuring the self-shrinkage of self-compacting concrete according to claim 1, characterized in that: The support (1) comprises a bottom plate (101), both sides of the top of the bottom plate (101) are fixedly connected with support columns (102), and the top of the support column (102) is fixedly connected with a fixed sleeve (103).
3. The device for measuring the self-shrinkage of self-compacting concrete according to claim 1, characterized in that: The slide rail (3) comprises a rail body (301) fixedly connected between the fixed sleeves (103), and the inside of the rail body (301) is provided with a sliding groove (302).
4. The device for measuring the self-shrinkage of self-compacting concrete according to claim 1, wherein: The extension device (4) comprises a connecting cylinder (401) fixedly connected in the inside of the fixed sleeve (103), the inside of the connecting cylinder (401) is movably connected with a screw rod (402), and the outer side of the screw rod (402) is threadedly connected with an extension rod (403).
5. The device for measuring the self-shrinkage of self-compacting concrete according to claim 1, wherein: The fixed cylinder (5) comprises a cylinder body (501) fixedly connected to the inner side of the rail body (301), the inside of the cylinder body (501) is movably connected with a limiting plate (503), the cylinder body (501) and the limiting plate (503) are fixedly connected with a spring (502) therebetween, and the side, away from the spring (502), of the limiting plate (503) is fixedly connected with a clamping plate (504).
6. The device for measuring the self-shrinkage of self-compacting concrete according to claim 1, wherein: The sliding block (7) comprises a block body (701) movably connected in the inside of the rail body (301), and the inside of the block body (701) is threadedly connected with a bolt (702).