CN211478324U - Concrete shrinkage expansion deformation tester - Google Patents

Concrete shrinkage expansion deformation tester Download PDF

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Publication number
CN211478324U
CN211478324U CN201922446245.8U CN201922446245U CN211478324U CN 211478324 U CN211478324 U CN 211478324U CN 201922446245 U CN201922446245 U CN 201922446245U CN 211478324 U CN211478324 U CN 211478324U
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supporting
plate
lifting block
supporting plate
single body
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CN201922446245.8U
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Chinese (zh)
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张卉伊
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Neierde Intelligent Technology Xianghe Co ltd
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Neierde Intelligent Technology Xianghe Co ltd
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Abstract

The utility model relates to a concrete shrinkage expansion deformation apparatus. The device comprises a bottom plate, wherein a left supporting plate is arranged on the left side of the bottom plate, and a right supporting plate is arranged on the right side of the bottom plate; a rectangular window is arranged in the middle of the left supporting plate, a left lifting block is arranged in the middle of the left supporting plate, a threaded hole is formed in the middle of the left lifting block, a horizontal threaded rod is arranged in the threaded hole, a push plate is arranged at the inner end of the threaded rod, a left hand wheel is arranged at the outer end of the threaded rod, and a left fixing piece is further arranged on the left supporting plate; a rectangular window is arranged in the middle of the right side supporting plate and is provided with a right side lifting block, a central hole is arranged in the middle of the right side lifting block, a sleeve is arranged in the central hole, a dial indicator is also arranged on the sleeve, and a right side fixing piece is also arranged on the right side supporting plate; the bottom plate is provided with a slide rail, the slide rail is provided with a support assembly with a support roller and a side hand wheel for driving the support roller to rotate, and the bottom plate further comprises a side fixing piece. The utility model discloses simple structure, simple operation, measurement accuracy height.

Description

Concrete shrinkage expansion deformation tester
Technical Field
The utility model belongs to the technical field of the concrete survey facility, especially, relate to a concrete shrinkage expansion deformation apparatus.
Background
Due to the characteristics of the concrete material, the volume of the concrete is reduced in the initial setting and hardening process, that is, the concrete shrinks in the hardening process theoretically. If the shrinkage occurs, cracks are generated, which leads to problems such as component cracking and loss of pretightening force. It is therefore common practice to limit the shrinkage of concrete during hardening by adding a suitable amount of expanding agent to the concrete mix, which results in a slight expansion of the concrete during hardening. In order to quantify the influence on the shrinkage and expansion rate of concrete after adding the expanding agents with different components and different proportion amounts, people develop and design concrete shrinkage and expansion instruments.
The concrete shrinkage and expansion instrument is an instrument for measuring the length (volume) change of a concrete test block under a specified temperature and humidity condition, and generally comprises the following components in structure: the base is a steel structure component and used for placing a test block, the positioning stand column is used for longitudinally and transversely limiting the left end of the test block measuring head on the standard rod and the left end of the concrete test block measuring head, and the adjustable stand column is prefabricated with three through holes for installing the dial indicator and a set screw for assisting the dial indicator in positioning. During the use with the concrete test block install the base additional on, through operating parts such as location stand, adjustable stand and amesdial, realize the measurement of concrete test block inflation (shrink) degree, the final calculation reachs the shrinkage expansion rate of concrete.
The concrete contraction and expansion instrument with the structure has the following problems: the concrete test block is generally obtained by injection molding in a standard mold frame, and the specification is generally 515mm long by 100mm wide by 100mm high (or 150mm long by 515mm wide by 150mm high, etc.). The concrete test block needs to be attached to the instrument during the measurement operation, and the operator cannot easily load the test block on the instrument due to the large weight of the test block. In addition, after the test block is loaded, the test block is usually required to be adjusted and positioned, one end of the test block is tightly jacked and fixed, and the other end of the test block is abutted against a measuring head of the dial indicator so as to realize the measurement of length change. The structure of current contraction and expansion appearance is not convenient for the operator to survey the operation, and it is inconvenient that just install the test block additional on the apparatus and adjusting position on the apparatus, the aforesaid install process additional and adjust the process operation improper can also lead to producing between test block and the instrument and collide with, is unfavorable for guaranteeing the precision of survey.
SUMMERY OF THE UTILITY MODEL
The utility model provides a concrete shrinkage and expansion deformation tester with simple structure, convenient operation and high measuring precision for solving the technical problems existing in the prior art.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a concrete shrinkage expansion deformation tester comprises a bottom plate, wherein a vertical left support plate is arranged on the left side of the bottom plate, a vertical right support plate is arranged on the right side of the bottom plate, and a cross beam is arranged between the tops of the left support plate and the right support plate; a rectangular window is arranged in the middle of the left supporting plate, a left lifting block is arranged in the window, a threaded hole is formed in the middle of the left lifting block, a horizontal threaded rod is arranged in the threaded hole, a push plate is arranged at the inner end of the threaded rod, a left hand wheel is arranged at the outer end of the threaded rod, and a left fixing piece for fixing the left lifting block is further arranged on the left supporting plate; a rectangular window is arranged in the middle of the right side supporting plate, a right side lifting block is arranged in the window, a central hole is arranged in the middle of the right side lifting block, a sleeve is arranged in the central hole, a dial indicator is further arranged on the sleeve, a telescopic measuring head of the dial indicator is input from the outer end of the sleeve and extends out from the inner end, and a right side fixing piece for fixing the right side lifting block is further arranged on the right side supporting plate; the bottom plate is provided with a slide rail, the slide rail is provided with a support component with a support roller and a side hand wheel for driving the support roller to rotate, and the bottom plate further comprises a side fixing part for fixing the support component.
The utility model has the advantages that: the utility model provides a simple reasonable concrete shrinkage expansion deformation apparatus of structural design, compared with current shrinkage expansion apparatus, the utility model discloses in through set up the slide rail on the bottom plate and install supporting component on the slide rail to set up supporting component and have the backing roll, make the concrete test block can go on around and control position control. Through setting up left side elevator and going up and down in the window of left side backup pad, right side elevator goes up and down to move in the window of right side backup pad, has realized the altitude mixture control of the tight subassembly in left side top and the altitude mixture control of right side amesdial, therefore the relative position between the measuring head of amesdial and the concrete test block can carry on around, control and the regulation of these three directions from top to bottom, is convenient for find the position of survey accurately. Whole device simple operation, the concrete test block just need not to touch this test block after stably loading supporting component, other accommodation process are through back-and-forth movement supporting component, backing roll through lateral part hand wheel drive supporting component rotates and adjusts the tight subassembly in left top, the height of the amesdial on right side, consequently, has got rid of and has carried out position adjustment's trouble repeatedly to the test block, both avoided colliding with between test block and the apparatus part, also make the operation more laborsaving, the accuracy of survey has been guaranteed simultaneously.
Preferably: the supporting assembly comprises a left supporting single body, a middle supporting single body and a right supporting single body, each supporting single body comprises a base, and the supporting rollers are arranged on the bases; the supporting roller comprises a driving roller and a driven roller, a side hand wheel is arranged on the side of the base, belt pulleys are arranged at the inner end of a rotating shaft of the side hand wheel and the rotating shaft of the driving roller, and the two belt pulleys are connected and driven by a belt.
Preferably: the three free base of support in a left side is connected in order and is constituted a whole, and the quantity of slide rail is four, sets up respectively in the outside position of left side support monomer bottom, the position that left side support monomer and middle part support monomer bottom are bordered, the position that middle part support monomer and right side support monomer bottom are bordered, the outside position of right side support monomer bottom, all is equipped with the slider on each slide rail, each slider and each base fixed connection.
Preferably: the three free base that supports in a left side, right side adopts same metal sheet to make through punching press and bending the shaping, supports the outside position of monomer bottom in the left side, the position that the monomer and middle part support the juncture of monomer bottom in the left side, the position that the monomer and right side support the juncture of monomer bottom in the middle part, the outside position that the monomer bottom was supported in the right side all makes the recess, and each slider falls into in the corresponding recess and welded fastening.
Preferably: the base of the left, middle and right supporting monomers is positioned on the plate body between the driving roller and the driven roller respectively and extends upwards to form a side baffle.
Preferably: the lateral part mounting is a lateral part fastening screw, vertical threaded holes are formed in each sliding block, and each lateral part fastening screw is located in each vertical threaded hole.
Preferably: the left fixing piece is a left fastening screw, a horizontal threaded hole is formed in the left supporting plate, the left fastening screw is located in the horizontal threaded hole, and the inner end of the left fastening screw abuts against the side part of the left lifting block; the right side mounting is right side fastening screw, is equipped with horizontal screw hole on the right side backup pad, and right side fastening screw is located this horizontal screw hole and the lateral part at right side elevator is tightly pushed up in the inner.
Preferably: sliding grooves are formed in the two sides of the left lifting block, and plate bodies on the two sides of the window of the left supporting plate are respectively positioned in the two grooves; the two sides of the right lifting block are provided with sliding grooves, and the plate bodies on the two sides of the window of the right supporting plate are respectively positioned in the two grooves.
Preferably: the plate body of the left supporting plate is provided with a left scale mark marking the height of the left lifting block, and the plate body of the right supporting plate is provided with a right scale mark marking the height of the right lifting block.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a left side view structure diagram of the present invention;
fig. 3 is a schematic diagram of the right-side view structure of the present invention;
fig. 4 is a schematic structural diagram of the middle support assembly of the present invention.
In the figure: 1. a slide rail; 2. a lateral fastening screw; 3. a left side fastening screw; 4. a left lifting block; 4-1, a threaded hole; 5. a left hand wheel; 6. a left support plate; 7. a threaded rod; 8. pushing the plate; 9. a cross beam; 10. testing concrete blocks; 11. a support assembly; 11-1, a base; 11-2, side baffles; 12. a side hand wheel; 12-1, a belt; 13. a support roller; 13-1, driving roll; 13-2, a driven roller; 14. a base plate; 15. a right side fastening screw; 16. a telescopic measuring head; 17. a right lifting block; 17-1, a sleeve; 18. a right support plate; 19. a watch fastening screw; 20. and (5) a dial indicator.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:
referring to fig. 1, the concrete shrinkage-expansion deformation measuring apparatus of the present invention includes a bottom plate 14, a vertical left support plate 6 disposed on the left side of the bottom plate 14, a vertical right support plate 18 disposed on the right side of the bottom plate, and a cross beam 9 disposed between the two. In this embodiment, all be equipped with the perforation in the top intermediate position of left side backup pad 6 and right side backup pad 18, the both ends of crossbeam 9 pass above-mentioned perforation respectively and with corresponding plate body between welded fastening, crossbeam 9 mainly used is connected left side backup pad 6 and right side backup pad 18, promotes the structural strength of whole apparatus. The bottoms of the left support plate 6 and the right support plate 18 are welded and fixed with the bottom plate 14.
Referring to fig. 2, it can be seen that: a rectangular window is arranged in the middle of the left supporting plate 6, a left lifting block 4 is arranged in the window, a threaded hole 4-1 is formed in the middle of the left lifting block 4, a horizontal threaded rod 7 is arranged in the threaded hole 4-1, a push plate 8 is arranged at the inner end of the threaded rod 7, and a left hand wheel 5 is arranged at the outer end of the threaded rod. The left hand wheel 5 is shaken to drive the threaded rod 7 to rotate, the threaded rod 7 moves inwards or outwards in the horizontal direction in the rotating process, and the push plate 8 is driven to move inwards or outwards. The push plate 8 and the left hand wheel 5 are fixed with the inner end and the outer end of the threaded rod 7 by welding.
In this embodiment, the sliding grooves are formed on two sides of the left lifting block 4, and the plate bodies on two sides of the window of the left supporting plate 6 are respectively located in the two grooves, that is, the left lifting block 4 takes the plate bodies on two sides of the window of the left supporting plate 6 as the guide rails to move up and down. For the convenience of assembly, as shown in the figure, the left supporting plate 6 is divided into an upper part and a lower part, the upper part of the window is one part, the two sides and the lower part of the window are the other part, and the upper part and the lower part of the left supporting plate 6 are fixed by butt welding after the left lifting block 4 is installed in the window.
A left side fixing member for fixing the left elevating block 4 is further provided on the left side support plate 6, and the left side fixing member fixes the left elevating block 4 at a certain height. In this embodiment, the left fixing member is a left fastening screw 3, a horizontal threaded hole is formed in the left supporting plate 6, the left fastening screw 3 is located in the horizontal threaded hole, and the inner end of the left fastening screw abuts against the side of the left lifting block 4.
Further, in order to know the height position of the left lifting block 4 for adjustment, a left scale mark for marking the height of the left lifting block 4 is provided on the plate body of the left supporting plate 6.
Referring to fig. 3, it can be seen that: the middle part of the right side supporting plate 18 is provided with a rectangular window, a right side lifting block 17 is arranged in the window, the middle part of the right side lifting block 17 is provided with a central hole, a horizontal sleeve 17-1 is welded and installed in the central hole, the sleeve 17-1 is also provided with a dial indicator 20, and a telescopic measuring head 16 of the dial indicator 20 is input from the outer end of the sleeve 17-1 and extends out from the inner end. Specifically, the telescoping measuring head 16 of the dial gauge 20 is located in a casing tube fixed to the case of the dial gauge 20, which is inserted into the casing tube 17-1 and fixed to the casing tube 17-1.
Specifically, a threaded hole which is through in the radial direction is formed in the side wall of the sleeve 17-1, a dial indicator fastening screw 19 is arranged in the threaded hole, the inner end of the dial indicator fastening screw 19 abuts against the outer wall of the shell tube of the dial indicator 20, the dial indicator 20 is fixed, the telescopic measuring head 16 is transversely arranged, and the dial indicator 20 can be used for indicating numbers by touching the inner end of the telescopic measuring head. The dial gauge 20 may be selected from a mechanical dial gauge or an electronic dial gauge.
In this embodiment, sliding grooves are formed on two sides of the right lifting block 17, and plate bodies on two sides of the window of the right supporting plate 18 are respectively located in the two grooves, that is, the right lifting block 17 takes the plate bodies on two sides of the window of the right supporting plate 18 as guide rails to move up and down. For the convenience of assembly, as shown in the figure, the right support plate 18 is divided into an upper part and a lower part, wherein the upper part of the window is one part, the two sides and the lower part of the window are the other part, and the upper part and the lower part of the right support plate 18 are fixed by butt welding after the right lifting block 17 is installed in the window.
A right fixing member for fixing the right lifter block 17 is further provided on the right support plate 18, and fixes the right lifter block 17 at a certain height. In this embodiment, the right fixing member is a right fastening screw 15, a horizontal threaded hole is formed in the right supporting plate 18, the right fastening screw 15 is located in the horizontal threaded hole, and the inner end of the right fastening screw abuts against the side of the right lifting block 17.
Further, in order to know the height position of the right lifting block 17 for adjustment, a right scale mark for marking the height of the right lifting block 17 is provided on the plate body of the right supporting plate 18. The left-side scale mark and the right-side scale mark correspond left and right, so that the center lines of the threaded rod 7 and the telescopic measuring head 16 can be adjusted to be approximately collinear positions by adjusting the height of the left-side lifting block 4 and the height of the right-side lifting block 17 and matching the height position display of the left-side scale mark and the right-side scale mark.
The bottom plate 14 is provided with a slide rail 1, the slide rail 1 is provided with a support component 11 with a support roller 13 and a side hand wheel 12 for driving the support roller 13 to rotate, and the device also comprises a side fixing piece for fixing the support component 11.
Referring to fig. 1 and 4, it can be seen that: the supporting component 11 comprises a left supporting single body, a middle supporting single body and a right supporting single body, each supporting single body comprises a base 11-1, and the supporting roller 13 is installed on the base 11-1. Each supporting roller 13 of each supporting monomer comprises a driving roller 13-1 and a driven roller 13-2, a side hand wheel 12 is installed on the side of the base 11-1, belt pulleys are respectively arranged at the inner end of a rotating shaft of the side hand wheel 12 and the rotating shaft of the driving roller 13-1, and the two belt pulleys are connected and driven by a belt 12-1. The driving roller 13-1 of the supporting roller 13 can be driven to rotate by rotating the side hand wheel 12, and the driven roller 13-2 follows up under the action of friction force when the concrete test block 10 is placed on the supporting roller 13. The concrete test block 10 is supported by three driving rollers 13-1 and driven rollers 13-2 of the three supporting single bodies together, and when a side hand wheel 12 of one of the supporting single bodies is rotated, the concrete test block 10 translates leftwards or rightwards.
In the embodiment, the bases 11-1 of the left, middle and right supporting single bodies are sequentially connected to form a whole, so that the three supporting single bodies synchronously move back and forth along the sliding rail. The number of the slide rails 1 is four, the slide rails are respectively arranged at the outer side position of the bottom of the left side supporting single body, the position of the junction of the left side supporting single body and the bottom of the middle supporting single body, the position of the junction of the middle supporting single body and the bottom of the right side supporting single body and the outer side position of the bottom of the right side supporting single body, slide blocks are arranged on the slide rails 1, and the slide blocks are fixedly connected with the bases 11-1.
Further, the bases 11-1 of the left, middle and right support units are made of the same metal plate through stamping and bending forming, specifically: the expanded shape of the combination of the three bases 11-1 is stamped and formed on the metal plate, then both sides are bent upward by 90 degrees, and the longitudinal section of the base 11-1 is in a U shape when viewed from the side. The position that supports monomer bottom the outside position, left side support monomer and middle part at left side support monomer bottom and support the position that monomer bottom is bordered, middle part support monomer and right side support the position that monomer bottom is bordered, the outside position of right side support monomer bottom all makes the recess, also cuts the sheet metal material of getting rid of relevant position promptly, makes each slider fall into in the corresponding recess and welded fastening.
In this embodiment, the lateral fixing member is a lateral fastening screw 2, each sliding block is provided with a vertical threaded hole, each lateral fastening screw 2 is located in each vertical threaded hole, and the lower end of each lateral fastening screw 2 is tightly pressed against the top of the corresponding sliding rail 1. After the front and back positions of the supporting component 11 are adjusted, the supporting component 11 and the sliding rail 1 are fixed by locking at least two side fastening screws 2.
In this embodiment, the plate bodies of the bases 11-1 of the left, middle and right support units located between the respective driving roller 13-1 and driven roller 13-2 extend upward to form the side baffle 11-2. The side guards 11-2 (front three, rear three) are prepared in the cutting process of the metal plate, i.e., at the corresponding positions, so that when both sides of the unfolded shape are folded upward, each side guard 11-2 is naturally formed. The side baffles 11-2 are used for protecting the front side and the rear side of the concrete test block 10, so that the concrete test block 10 is prevented from sliding off from the front part or the rear part. On the other hand, the front three side baffles 11-2 and the rear three side baffles 11-2 form a front-back reference, and when the concrete test block 10 is placed on the supporting component 11, the edge of the concrete test block is approximately parallel to the plane of the front three side baffles 11-2 and the plane of the rear three side baffles 11-2.
The assembling method comprises the following steps:
the lower part of the left support plate 6 and the lower part of the right support plate 18 are fixedly welded on the bottom plate 14; screwing the threaded rod 7 into a threaded hole 4-1 of the left lifting block 4, welding a push plate 8 at the inner end and welding a left hand wheel 5 at the outer end; then, the left lifting block 4 is arranged in a window of a left supporting plate 6, and the upper part of the left supporting plate 6 is welded and arranged on the lower part; a mounting sleeve 17-1 is welded in a central hole of the right lifting block 17, then the right lifting block 17 is mounted in a window of a right supporting plate 18, and then the upper part of the right supporting plate 18 is welded and mounted on the lower part; then, the cross beam 9 is welded between the upper portions of the left and right support plates 6 and 18;
the method comprises the following steps of integrally punching and forming a metal plate to obtain a combination body of each base 11-1 of a supporting component 11, bending two sides of the unfolded shape by 90 degrees, cutting and removing redundant plate bodies at the positions of sliding blocks at the bottom, placing the redundant plate bodies into the sliding blocks, and welding and fixing the sliding blocks; a driving roller 13-1, a driven roller 13-2 and a side hand wheel 12 are respectively arranged on the three supporting single bodies, and a belt pulley of the side hand wheel 12 is connected with a belt pulley of the driving roller 13-1 by a belt 12-1;
installing and fixing each slide rail 1 on a bottom plate 14, and then installing the combination of the support component 11 and the slide block on each slide rail 1 in a forward and backward sliding manner; the whole assembly of the measuring instrument is completed
The measurement method comprises the following steps:
injecting the concrete material into a standard injection mold to form a concrete test block 10 with a standard size; taking out from the mold after initial setting and hardening; moving the concrete test block 10 to each group of supporting rollers 13 of the supporting component 11, and finely adjusting the position to enable the edge of the concrete test block 10 to be parallel to the side baffle 11-2;
the support component 11 is pushed forwards and backwards, the front and back positions of the test block are adjusted by fixing the position, and the side hand wheel 12 is shaken to enable the test block to translate left and right to adjust the left and right positions; the heights of the left lifting block 4 and the right lifting block 17 are adjusted, the heights of the two lifting blocks are approximately consistent through scale marks on the two sides, and the positions of the two lifting blocks are fixed by adopting respective fastening screws; then, the left hand wheel 5 controls the threaded rod 7 to rotate, the push plate 8 moves transversely until the push plate 8 abuts against the end face of the concrete test block 10 (the central line of the threaded rod 7 is approximately collinear with the central line of the test block), the push plate 8 is continuously pushed to drive the test block to move towards the dial indicator 20 on the support assembly 11 until the center of the right end face of the test block abuts against the dial indicator 20 and the dial indicator 20 acts, and the number of the dial indicator 20 at the moment is recorded;
after standing for a certain time, recording the readings of the dial indicator 20 again, and obtaining an increase value of the test block length by making a difference between the readings and the readings, wherein the increase value reflects the expansion condition of the test block and can be used for calculating the expansion rate; the concrete test block 10 may shrink without adding the expanding agent, and the shrinkage rate can be calculated by reflecting the shrinkage condition of the test block by the difference between the two readings of the dial indicator 20.

Claims (9)

1. A concrete shrinkage expansion deformation tester is characterized in that: comprises a bottom plate (14), wherein a vertical left support plate (6) is arranged on the left side of the bottom plate (14), a vertical right support plate (18) is arranged on the right side of the bottom plate, and a cross beam (9) is arranged between the tops of the left support plate and the right support plate; a rectangular window is arranged in the middle of the left supporting plate (6), a left lifting block (4) is arranged in the window, a threaded hole (4-1) is formed in the middle of the left lifting block (4), a horizontal threaded rod (7) is arranged in the threaded hole (4-1), a push plate (8) is arranged at the inner end of the threaded rod (7), a left hand wheel (5) is arranged at the outer end of the threaded rod, and a left fixing piece for fixing the left lifting block (4) is further arranged on the left supporting plate (6); a rectangular window is arranged in the middle of the right side supporting plate (18), a right side lifting block (17) is arranged in the window, a central hole is arranged in the middle of the right side lifting block (17), a sleeve (17-1) is arranged in the central hole, a dial indicator (20) is further arranged on the sleeve (17-1), a telescopic measuring head (16) of the dial indicator is input from the outer end of the sleeve (17-1) and extends out from the inner end, and a right side fixing piece for fixing the right side lifting block (17) is further arranged on the right side supporting plate (18); the bottom plate (14) is provided with a sliding rail (1), the sliding rail (1) is provided with a supporting component (11) which is provided with a supporting roller (13) and a side hand wheel (12) for driving the supporting roller (13) to rotate, and the bottom plate further comprises a side fixing piece for fixing the supporting component (11).
2. The concrete shrinkage-expansion deformation tester as set forth in claim 1, wherein: the supporting component (11) comprises a left supporting single body, a middle supporting single body and a right supporting single body, each supporting single body comprises a base (11-1), and the supporting roller (13) is installed on the base (11-1); the supporting roller (13) comprises a driving roller (13-1) and a driven roller (13-2), a side hand wheel (12) is installed on the side of the base (11-1), belt pulleys are arranged at the inner end of a rotating shaft of the side hand wheel (12) and the rotating shaft of the driving roller (13-1), and the two belt pulleys are connected and driven by a belt (12-1).
3. The concrete shrinkage-expansion deformation tester as set forth in claim 2, wherein: the left, middle and right three support single bases (11-1) are sequentially connected to form a whole, the number of the sliding rails (1) is four, the four sliding rails are respectively arranged at the outer side position of the bottom of the left support single body, the position where the left support single body is intersected with the bottom of the middle support single body, the position where the middle support single body is intersected with the bottom of the right support single body and the outer side position of the bottom of the right support single body, sliding blocks are arranged on the sliding rails (1), and the sliding blocks are fixedly connected with the bases (11-1).
4. The concrete shrinkage-expansion deformation tester as set forth in claim 3, wherein: the base (11-1) of the left, middle and right supporting monomers is made of the same metal plate through stamping and bending forming, grooves are formed in the outer side position of the bottom of the left supporting monomer, the position where the left supporting monomer and the middle supporting monomer are intersected, the position where the middle supporting monomer and the right supporting monomer are intersected and the outer side position of the bottom of the right supporting monomer, and each sliding block falls into the corresponding groove and is welded and fixed.
5. The concrete shrinkage-expansion deformation tester as set forth in claim 4, wherein: the plate bodies of the bases (11-1) of the left, middle and right supporting single bodies, which are positioned between the driving roller (13-1) and the driven roller (13-2) respectively, extend upwards to form side baffles (11-2).
6. The concrete shrinkage-expansion deformation tester as set forth in claim 5, wherein: the lateral part mounting is lateral part fastening screw (2), all is equipped with vertical screw hole on each slider, and each lateral part fastening screw (2) branch is located each vertical screw hole.
7. The concrete shrinkage-expansion deformation tester as set forth in claim 6, wherein: the left fixing piece is a left fastening screw (3), a horizontal threaded hole is formed in the left supporting plate (6), the left fastening screw (3) is located in the horizontal threaded hole, and the inner end of the left fastening screw abuts against the side of the left lifting block (4); the right side fixing piece is a right side fastening screw (15), a horizontal threaded hole is formed in the right side supporting plate (18), the right side fastening screw (15) is located in the horizontal threaded hole, and the inner end of the right side fastening screw abuts against the side portion of the right side lifting block (17).
8. The concrete shrinkage-expansion deformation tester as set forth in claim 7, wherein: sliding grooves are formed in the two sides of the left lifting block (4), and plate bodies on the two sides of a window of the left supporting plate (6) are respectively positioned in the two grooves; the two sides of the right lifting block (17) are provided with sliding grooves, and the plate bodies on the two sides of the window of the right supporting plate (18) are respectively positioned in the two grooves.
9. The concrete shrinkage-expansion deformation tester as set forth in claim 8, wherein: the plate body of the left supporting plate (6) is provided with a left scale mark for marking the height of the left lifting block (4), and the plate body of the right supporting plate (18) is provided with a right scale mark for marking the height of the right lifting block (17).
CN201922446245.8U 2019-12-30 2019-12-30 Concrete shrinkage expansion deformation tester Active CN211478324U (en)

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CN201922446245.8U CN211478324U (en) 2019-12-30 2019-12-30 Concrete shrinkage expansion deformation tester

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Application Number Priority Date Filing Date Title
CN201922446245.8U CN211478324U (en) 2019-12-30 2019-12-30 Concrete shrinkage expansion deformation tester

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197683A (en) * 2020-11-27 2021-01-08 董光亮 Bridge beam supports warp automatic check out system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197683A (en) * 2020-11-27 2021-01-08 董光亮 Bridge beam supports warp automatic check out system
CN112197683B (en) * 2020-11-27 2022-09-06 湖北楚晟科路桥技术开发有限公司 Bridge beam supports warp automatic check out system

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