CN218272064U

CN218272064U - Concrete shrinkage experimental device

Info

Publication number: CN218272064U
Application number: CN202221390676.2U
Authority: CN
Inventors: 赵志刚; 刘发瑞; 李兴军
Original assignee: Shouguang Runcheng Building Materials Co ltd
Current assignee: Shouguang Runcheng Building Materials Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2023-01-10
Anticipated expiration: 2032-06-06

Abstract

The utility model provides a concrete contraction experimental apparatus, including feeding the subassembly, base and adjusting part, the base is installed three adjustable supporting component of group between feeding subassembly and adjusting part, every adjustable supporting component of group all includes in pedestal mounting's central support arm, the base respectively sets up the mounting groove of an intercommunication base lateral wall in the both sides of each central support arm, all install drive assembly in every mounting groove, the equal sliding connection of each drive assembly has the slide, each articulated collateral branch brace in the both sides of each central support arm, each collateral branch brace all articulates there is the connecting rod, each connecting rod all articulates with the slide that corresponds the position. Through the drive assembly, the angle between the two supporting arms of each group of adjustable supporting assemblies can be adjusted at will to meet the placement requirements of cylindrical test pieces and square test pieces, and the compatibility of the concrete shrinkage experiment device for test pieces with different dimensions is greatly improved.

Description

Concrete shrinkage experimental device

Technical Field

The utility model belongs to the technical field of the concrete detects, in particular to concrete shrinkage experimental apparatus.

Background

Concrete shrinkage refers to the phenomenon of volume shrinkage that occurs during the initial setting or hardening of concrete. In the case of construction, the shrinkage of concrete generates tensile stress inside the concrete, thereby causing cracks to appear, increasing the deformation of concrete structural members, and having a great influence on the bearing capacity, durability and structural safety of the structural members. Therefore, the shrinkage of the concrete sample needs to be detected before construction.

The existing concrete shrinkage experiment device can only place concrete samples of the same specification, so that the compatibility of concrete samples of different specifications is poor, and concrete shrinkage experiment devices of different specifications need to be prepared.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

To the defect that points out in the background art, the utility model aims to provide a concrete contraction experimental apparatus to solve current concrete contraction experimental apparatus and to the compatible poor problem of test piece.

In order to achieve the above object, the technical solution of the present invention is that:

a concrete shrinkage experiment device comprises a feeding assembly, a base and an adjusting assembly, wherein the feeding assembly is installed at one end of the base in the length direction, the adjusting assembly is installed at the other end of the base in the length direction, and the adjusting assembly is provided with a digital display dial indicator; the base is installed three adjustable supporting component that evenly arrange of group, every group between feeding subassembly and adjusting part adjustable supporting component all includes in pedestal mounting's central support arm, the base respectively sets up the mounting groove of an intercommunication base lateral wall in the both sides of each central support arm, every all install drive assembly in the mounting groove, each the equal sliding connection of drive assembly has a slide, each the both sides of central support arm respectively articulate there is the collateral branch brace, and each collateral branch brace all articulates there is the connecting rod, each the connecting rod all articulates with the slide that corresponds the position.

As a preferred technical scheme, every group drive assembly includes third lead screw and locking seat, the locking seat is established at the outer terminal surface of mounting groove and is fixed in the lateral wall of base, the one end of third lead screw is passed through the bearing frame and is connected the installation with the interior terminal surface of mounting groove, the other end of third lead screw passes locking seat and fixed mounting has synchronous pulley, the rotatory installation is made with the locking seat to the third lead screw, a set of third hand wheel is respectively established to the both sides of base, each fixed mounting is made with the tip of one of them third lead screw of homonymy to the third hand wheel, three synchronous pulley of group of base homonymy are connected through same hold-in range.

As an optimal technical scheme, each guide way has all been seted up to the both sides of mounting groove, and the both sides of slide all are equipped with the guide block in each mounting groove, guide block and the guide way sliding connection who corresponds.

As a preferable technical scheme, a teflon plate is mounted on the upper end surface of each of the central support arm and the side support arms.

As a preferred technical scheme, each both sides of side support arm all slidable mounting has the stopper, the base respectively opens the second screw hole that has corresponding stopper in the both sides of each mounting groove.

As an optimal technical scheme, the adjusting assembly and the base are adjustably mounted, and the base is provided with a plurality of groups of first threaded holes which are uniformly distributed and used for mounting the adjusting assembly.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

through the drive assembly, the angle between the two supporting arms of each group of adjustable supporting assemblies can be adjusted at will to meet the placement requirements of cylindrical test pieces and square test pieces, and the compatibility of the concrete shrinkage experiment device for test pieces with different dimensions is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of the structure a in fig. 1.

Fig. 3 is a schematic structural view of the adjustable support assembly.

In the figure: 1. the feeding assembly, 11, a back plate, 12, a first lead screw, 121, a first hand wheel, 13, a push plate, 2, a base, 21, a first threaded hole, 22, a mounting groove, 221, a guide groove, 23, a second threaded hole, 3, an adjusting assembly, 31, a second lead screw, 311, a second hand wheel, 32, a support frame, 33, a mounting seat, 4, a digital display dial indicator, 5, an adjustable support assembly, 51, a central support arm, 52, a side support arm, 521, a limiting block, 53, a connecting rod, 54, a sliding seat, 55, a driving assembly, 551, a third lead screw, 552, a locking seat, 553, a synchronous belt wheel, 554 and a third hand wheel.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The utility model discloses in, in order to solve current concrete shrinkage experimental apparatus to the compatible poor problem of test piece, a concrete shrinkage experimental apparatus is designed out to the special. The concrete shrinkage experimental device in the embodiment comprises a feeding assembly 1, a base 2 and an adjusting assembly 3.

As shown in fig. 1, the feeding assembly 1 is installed at one end of the base 2 in a length direction. The feeding assembly 1 comprises a push plate 13 and a back plate 11 fixedly mounted on the base 2, the back plate 11 is in threaded connection with a first screw rod 12 parallel to the length direction of the base 2, one end of the first screw rod 12 penetrates through the back plate 11 and is connected with the push plate 13 through a bearing seat, the other end of the first screw rod 12 penetrates through the back plate 11 and is fixed with a first hand wheel 121, and guide rods penetrating through the back plate 11 are fixedly mounted on two sides of the first screw rod 12 of the push plate 13 respectively.

As shown in fig. 1, the adjusting assembly 3 is installed at the other end of the base 2 in the length direction, the adjusting assembly 3 and the base 2 are adjustably installed, and the base 2 is provided with a plurality of groups of first threaded holes 21 which are uniformly distributed and used for installing the adjusting assembly 3. The adjusting part 3 includes mount pad 33 and in the support frame 32 of base 2 installation, and automatic display numerical value's digital display amesdial 4 is installed to mount pad 33, and mount pad 33 is equipped with the locking bolt who is used for fixed digital display amesdial 4 in addition. The upper end face of the supporting frame 32 is screwed with a second screw rod 31 which is vertical to the length direction of the base 2, one end of the second screw rod 31 penetrates through the supporting frame 32 and is connected and installed with the installation seat 33 through a bearing seat, the other end of the second screw rod 31 penetrates through the supporting frame 32 and is fixedly provided with a second hand wheel 311, and guide rods penetrating through the supporting frame 32 are fixedly installed on two sides of the third screw rod 551 of the installation seat 33 respectively.

As shown in fig. 1 and 2, three groups of adjustable supporting assemblies 5 which are uniformly arranged and used for placing concrete samples are arranged between the feeding assembly 1 and the adjusting assembly 3 on the base 2. Each group of adjustable supporting components 5 comprises a central supporting arm 51 installed on the base 2, the base 2 is respectively provided with a mounting groove 22 communicated with the side wall of the base 2 on two sides of each central supporting arm 51, and a driving component 55 is installed in each mounting groove 22. Each driving component 55 is slidably connected with a sliding seat 54, guide grooves 221 are formed in two sides of each mounting groove 22, guide blocks are arranged on two sides of each sliding seat 54, and the guide blocks are slidably connected with the corresponding guide grooves 221. Each central supporting arm 51 is hinged at both sides with a side supporting arm 52, each side supporting arm 52 is hinged with a connecting rod 53, and each connecting rod 53 is hinged with a sliding seat 54 at the corresponding position. In order to ensure the connection strength, each side support arm 52 is hinged with two symmetrically distributed connecting rods 53. Wherein, a teflon plate is installed on the upper end surface of each of the central supporting arm 51 and the side supporting arms 52. The Teflon plate has high lubricity and can reduce the friction force with a concrete test piece.

As shown in fig. 1, the side support arms 52 are slidably mounted with stoppers 521 at both sides thereof, the base 2 is respectively provided with second threaded holes 23 corresponding to the stoppers 521 at both sides of each mounting groove 22, and the stoppers 521 are slidably mounted with the side support arms 52 to avoid interference with retraction of the connecting rods 53. When the experimental device limits or needs to place a square test piece, the limiting block 521 slides to the lowest point and fixes, and then the limiting block 521 is connected with the second threaded hole 23 through a bolt, so that the side support arm 52 is locked and does not deflect, and the flatness of the central support arm 51 and the side support arm 52 serving as placing planes is ensured.

As shown in fig. 3, each set of driving assemblies 55 includes a third lead screw 551 and a locking seat 552. The locking seat 552 is arranged on the outer end face of the mounting groove 22 and fixed on the side wall of the base 2, one end of the third screw rod 551 is connected with the inner end face of the mounting groove 22 through a bearing seat, the other end of the third screw rod 551 passes through the locking seat 552 and is fixedly provided with a synchronous belt wheel 553, and the third screw rod 551 and the locking seat 552 are rotatably arranged. Two sides of the base 2 are respectively provided with a group of third handwheels 554, each third handwheel 554 is fixedly installed with the end of one of the third screw rods 551 on the same side, and the three groups of synchronous pulleys 553 on the same side of the base 2 are connected through the same synchronous belt.

The expansion angle of the side support arm 52 is adjusted according to the specification of a test piece, for example, a cylindrical test piece. The third handwheels 544 on the two sides of the base 2 are respectively rotated to drive the third screw rods 511 connected with the third handwheels to rotate, and when the third screw rods 511 rotate, the remaining third screw rods are driven to rotate the third screw rods 511 by the aid of the synchronous belt wheel 553 and the synchronous belt, so that the three groups of third screw rods 511 on the same side rotate simultaneously. The rotational movement of the third screw 511 is converted into the linear movement of the slide carriages 54, and the slide carriages 54 are moved along the guide grooves 221 in a direction away from the central support arm 51. The movement of the slide 54 pulls the connecting rod 53 and thus the side support arms 52 to tilt up, so that each set of adjusting support members 5 is supported in a V-shape for placing a cylindrical test piece. The cylindrical test piece is placed in the V-shaped adjustable supporting component 5, the digital display dial indicator 4 is fixed on the mounting seat 33, the second hand wheel 311 is rotated, the second screw rod 31 is rotated, the mounting seat 33 is driven to move, and the height of the digital display dial indicator 4 is adjusted. The first hand wheel 121 is rotated to enable the first screw rod 12 to rotate, so that the push plate 13 moves, after the push plate 13 contacts the cylindrical test piece, along with the continuous rotation of the first hand wheel 121, the push plate 13 pushes the cylindrical test piece to gradually approach the digital display dial indicator 4 until the cylindrical test piece contacts the digital display dial indicator 4. At this moment, the detection probe of the digital display dial indicator 4 is effectively abutted to the cylindrical test piece, and detection can be carried out.

In accordance with the present invention, as in the previous embodiments, these embodiments have not been described in detail, nor have they been limited to the specific embodiments of the invention. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete shrinkage experiment device comprises a feeding assembly (1), a base (2) and an adjusting assembly (3), wherein the feeding assembly (1) is installed at one end of the base (2) in the length direction, the adjusting assembly (3) is installed at the other end of the base (2) in the length direction, and the adjusting assembly (3) is provided with a digital display dial indicator (4); the method is characterized in that: base (2) are in feeding adjustable supporting component (5) that evenly arrange of three groups between subassembly (1) and adjusting part (3), every group adjustable supporting component (5) all include central support arm (51) of base (2) installation, base (2) respectively set up mounting groove (22) of a intercommunication base (2) lateral wall in the both sides of each central support arm (51), every all install drive assembly (55), each in mounting groove (22) drive assembly (55) equal sliding connection has slide (54), each the both sides of central support arm (51) respectively articulate there is side support arm (52), and each side support arm (52) all articulate there is connecting rod (53), each connecting rod (53) all articulate with slide (54) that correspond the position.

2. The concrete shrinkage test device of claim 1, wherein: each group of driving assemblies (55) comprises a third screw rod (551) and a locking seat (552), the locking seat (552) is arranged on the outer end face of the installation groove (22) and fixed on the side wall of the base (2), one end of the third screw rod (551) is connected and installed with the inner end face of the installation groove (22) through a bearing seat, the other end of the third screw rod (551) penetrates through the locking seat (552) and is fixedly provided with a synchronous pulley (553), the third screw rod (551) and the locking seat (552) are rotatably installed, a group of third hand wheels (554) are respectively arranged on two sides of the base (2), each third hand wheel (554) is fixedly installed with the end of one of the third screw rods (551) on the same side, and the three groups of synchronous pulleys (553) on the same side of the base (2) are connected through the same synchronous belt.

3. The concrete shrinkage test device of claim 2, wherein: each guide way (221) has all been seted up to the both sides of mounting groove (22), and the both sides of slide holder (54) all are equipped with the guide block in each mounting groove (22), guide block and corresponding guide way (221) sliding connection.

4. The concrete shrinkage test device of claim 1, wherein: the upper end surfaces of the central supporting arm (51) and the side supporting arms (52) are respectively provided with a Teflon plate.

5. The concrete shrinkage test device of claim 1, wherein: both sides of each side support arm (52) are all provided with a limiting block (521) in a sliding mode, and the base (2) is provided with second threaded holes (23) corresponding to the limiting blocks (521) on both sides of each mounting groove (22).

6. The concrete shrinkage test device of claim 1, wherein: the adjusting component (3) and the base (2) are adjustably mounted, and the base (2) is provided with a plurality of groups of first threaded holes (21) which are uniformly distributed and used for mounting the adjusting component (3).