A full-grade concrete direct tension test device

Abstract

The present application relates to concrete testing device technical field, disclose a kind of full-grade concrete straight pull testing device, including test bench;Test component, including test frame and two axial tensioning pieces, two axial tensioning pieces are respectively arranged on the inner wall of test frame, respectively for along X axis and Y axis stretch test piece;Connecting component, including several connecting pipes and several connecting pieces, several connecting pipes are respectively provided on the outer wall of test piece, several connecting pieces are respectively arranged on axial tensioning piece, and axial tensioning piece is connected with connecting pipe by connecting piece;Cleaning component, including cleaning piece and collection groove, cleaning piece is arranged on connecting piece, for cleaning the concrete slag on connecting piece, and collection groove is fixedly connected at the bottom end of test bench and is communicated with the bottom end of test frame, and collection groove is used to collect concrete slag.The present application realizes the convenient installation and disassembly of sample block, adapts different sizes of sample block to carry out test, ensures that it is uniformly stressed, improves the overall test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of concrete testing devices, in particular to a full-graded concrete direct-pull testing device. Background Art

[0002] Fully graded concrete is a graded mix of aggregates of varying particle sizes. This helps reduce voids in concrete, improving its strength and corrosion resistance. Test methods for measuring concrete's tensile properties include direct tensile testing and indirect methods (such as splitting and bending tests). Direct tensile testing directly measures the relationship between uniaxial tensile strength and elongation, thereby determining the tensile stress-strain relationship of the concrete material.

[0003] In the prior art, for concrete specimens with prefabricated parts cast inside, operators are usually required to manually position the specimens during testing and install them on a stretching device for stretching. The positioning is not accurate enough. At the same time, the prefabricated parts are usually fixed in the center, which is prone to deviations during preparation, or resulting in uneven force during subsequent tests, affecting the overall test results. In addition, in the prior art, after the test is completed, the concrete blocks usually need to be disassembled and cleaned before testing can be carried out again, affecting the overall test efficiency.

[0004] Therefore, there is an urgent need for a full-graded concrete direct pull test device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a full-graded concrete direct pull test device to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a fully graded concrete direct pull test device, comprising:

[0007] test bench;

[0008] A test assembly, comprising a test frame and two axial tensile members, wherein the test frame is fixedly connected to the top of the test bench, and the two axial tensile members are respectively arranged on the inner wall of the test frame, and the two axial tensile members are arranged vertically, and are used to stretch the test piece along the X axis and the Y axis respectively;

[0009] A connecting assembly comprising a plurality of connecting tubes and a plurality of connecting pieces, wherein the outer wall of the test piece is provided with the plurality of connecting tubes, and the plurality of connecting pieces are provided on the axial tensile member, and the axial tensile member is connected to the connecting tubes via the connecting pieces;

[0010] The cleaning assembly comprises a cleaning piece and a collecting groove, the cleaning piece is arranged on the connecting piece for cleaning the concrete residues on the connecting piece, and the collecting groove is fixedly connected to the bottom end of the test table and communicates with the bottom end of the test frame, and the collecting groove is used for collecting the concrete residues.

[0011] According to the full-graded concrete straight pulling test device provided by the application, the axial tensioning piece comprises two first bidirectional threaded rods, the two first bidirectional threaded rods are rotationally connected to the two ends in the test frame respectively, the first bidirectional threaded rods are threadedly connected with moving plates at the two ends respectively, the test piece is located between the two moving plates, a plurality of first motors are fixedly connected to the test frame, and one end of the first bidirectional threaded rod is fixedly connected with the output shaft of the first motor.

[0012] According to the full-graded concrete straight pulling test device provided by the application, the connecting piece comprises an adjusting plate, the adjusting plate is fixedly connected to one end of the moving plate close to the test piece, the adjusting plate is provided with a transverse groove and a vertical groove, the transverse groove and the vertical groove are arranged in a cross manner, a second bidirectional threaded rod is rotationally connected to the transverse groove and the vertical groove, the second bidirectional threaded rod is threadedly connected with a sliding block at the two ends, the sliding block is slidingly connected in the transverse groove and the vertical groove, and a fixing piece is arranged on the sliding block.

[0013] According to the full-graded concrete straight pulling test device provided by the application, the fixing piece comprises a plurality of first fixing blocks, the intersection of the transverse groove and the vertical groove and the top end of the sliding block are fixedly connected with the first fixing blocks.

[0014] The two ends of the first fixing block in the transverse groove are fixedly connected with sliding rails, the sliding rails are slidingly connected with second fixing blocks, the two ends of the first fixing block in the vertical groove are fixedly connected with one end of a supporting rod, the other end of the supporting rod penetrates through the second fixing blocks located on the same horizontal plane, and the first fixing blocks and the second fixing blocks are provided with the connecting pieces.

[0015] According to the full-graded concrete straight pulling test device provided by the application, the connecting piece comprises a plug-in pipe fixedly connected to the first fixing block and the second fixing block at one end, a plurality of connecting heads are circumferentially hinged to the other end of the plug-in pipe, a plurality of connecting grooves are circumferentially arranged in the connecting pipe, the connecting heads are matched with the connecting grooves, a stabilizing piece is arranged in the plug-in pipe, and the stabilizing piece abuts against the connecting heads.

[0016] According to the full-graded concrete straight pulling test device provided by the application, the stabilizing piece comprises a first electric telescopic rod fixedly connected in the plug-in pipe, one end of the first electric telescopic rod is fixedly connected with one end of a stabilizing block, the other end of the stabilizing block is rotatably connected with one end of a connecting column, the other end of the connecting column is fixedly connected with a threaded column, a threaded groove is formed in the connecting pipe, the threaded column is threadedly connected with the threaded groove, a second electric motor is fixedly connected in the stabilizing block, and one end of the connecting column extends into the stabilizing block and is fixedly connected with an output shaft of the second electric motor.

[0017] According to the full-graded concrete straight pulling test device provided by the application, the cleaning piece comprises a plurality of second electric telescopic rods fixedly connected on the plug-in pipe, and the telescopic end of each second electric telescopic rod is fixedly connected with a cleaning plate.

[0018] According to the full-graded concrete straight pulling test device provided by the application, a plurality of brushes are fixedly connected in the through hole.

[0019] According to the full-graded concrete straight pulling test device provided by the application, the number of the connecting pipes located on one side of the test piece is nine.

[0020] According to the full-graded concrete straight pulling test device provided by the application, a magnet layer is coated on the connecting column, and the magnet layer is used for adsorbing the connecting head.

[0021] Compared with the prior art, the application has the following advantages and technical effects:

[0022] The full-graded concrete straight pulling test device provided by the application places the test piece between the two axial stretching pieces, connects the test piece with the connecting pipes through the connecting pieces, realizes the installation of the test piece on the test device, ensures that the test piece is in the central position after installation, ensures that the connecting pipes are evenly stressed in the array-shaped distribution, performs the stretching test through the axial stretching pieces, and after the test is completed, the test piece is crushed, the crushed test sample blocks connected with the connecting pipes are cleaned through the cleaning piece and collected into the collection groove below. The application realizes the convenient installation and disassembly of the test sample blocks, adapts to the test of test sample blocks of different sizes, ensures that the test sample blocks are evenly stressed, and improves the overall test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is the whole structure schematic diagram of the present application;

[0025] Figure 2 It is the adjusting plate structure schematic diagram of the present application;

[0026] Figure 3 It is the connecting piece structure schematic diagram of the present application;

[0027] Figure 4 It is the cleaning plate structure schematic diagram of the present application;

[0028] Wherein, 1, test bench;2, test frame;3, test piece;4, connecting pipe;5, collection groove;6, first bidirectional threaded rod;7, moving plate;8, first motor;9, adjusting plate;10, transverse groove;11, vertical groove;12, second bidirectional threaded rod;13, sliding block;14, first fixed block;15, slide rail;16, second fixed block;17, support rod;18, plug-in pipe;19, connecting head;20, connecting groove;21, first electric telescopic rod;22, stabilizing block;23, connecting column;24, threaded column;25, threaded groove;26, second motor;27, second electric telescopic rod;28, cleaning plate;29, through hole;30, brush;31, magnet layer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0031] With reference to Figures 1-4 The present application provides a full-grade concrete direct tension test device, comprising:

[0032] The test bench 1;

[0033] The test assembly comprises a test frame 2 and two axial tension members, the test frame 2 is fixedly connected to the top end of the test bench 1, and the two axial tension members are arranged on the inner walls of the test frame 2 and are arranged vertically and respectively used for stretching the test piece 3 along the X-axis and the Y-axis;

[0034] The connecting assembly comprises a plurality of connecting pipes 4 and a plurality of connecting pieces, the connecting pipes 4 are arranged on the outer wall of the test piece 3 respectively, and the connecting pieces are arranged on the axial stretching pieces respectively, and the axial stretching pieces are connected with the connecting pipes 4 through the connecting pieces;

[0035] The cleaning assembly comprises a cleaning piece and a collecting groove 5, the cleaning piece is arranged on the connecting piece and used for cleaning the concrete residues on the connecting piece, the collecting groove 5 is fixedly connected to the bottom end of the test bench 1 and communicates with the bottom end of the test frame 2, and the collecting groove 5 is used for collecting the concrete residues.

[0036] In an embodiment of the present application, the test piece 3 is placed between the two axial stretching pieces, is connected with the connecting pipes 4 through the connecting pieces, is installed on the test device, is ensured to be in the central position after installation, and the array-shaped connecting pipes 4 ensure that the test piece 3 is uniformly stressed, the test piece 3 is crushed after the stretching test is completed, and the crushed test sample blocks connected with the connecting pieces are cleaned by the cleaning piece and are collected into the collecting groove 5 below.

[0037] As an optional implementation, the axial stretching piece comprises two first bidirectional threaded rods 6, the two first bidirectional threaded rods 6 are rotationally connected to the two ends in the test frame 2 respectively, the first bidirectional threaded rods 6 are threadedly connected with the moving plates 7 at the two ends respectively, the test piece 3 is located between the two moving plates 7, a plurality of first motors 8 are fixedly connected to the test frame 2, and one end of the first bidirectional threaded rod 6 is fixedly connected with the output shaft of the first motor 8.

[0038] In an embodiment of the present application, the first motor 8 drives the two moving plates 7 to move synchronously, and then the synchronous stretching is realized, in addition, the synchronous movement in four directions is realized, the self-positioning of the test piece 3 is realized, and the test piece 3 is ensured to be located on the central point to perform the axial stretching test.

[0039] As an optional implementation, the connecting piece comprises an adjusting plate 9, the adjusting plate 9 is fixedly connected to one end of the moving plate 7 close to the test piece 3, the adjusting plate 9 is provided with a transverse groove 10 and a vertical groove 11, the transverse groove 10 and the vertical groove 11 are cross arranged, the second bidirectional threaded rods 12 are rotationally connected in the transverse groove 10 and the vertical groove 11, the second bidirectional threaded rods 12 are threadedly connected with the sliding blocks 13 at the two ends respectively, the sliding blocks 13 are slidingly connected in the transverse groove 10 and the vertical groove 11, the sliding blocks 13 are provided with fixing pieces, a plurality of connecting pieces are arranged on the fixing pieces in an array shape and correspond to the array-shaped plurality of connecting pipes 4 one by one.

[0040] In an embodiment of the present application, the positions of the sliding blocks 13 are adjusted through the transverse groove 10, the vertical groove 11 and the corresponding second bidirectional threaded rods 12, so that the plurality of connecting pieces correspond to the plurality of connecting pipes 4 on the same surface of the test piece 3 one by one.

[0041] As an optional implementation, the fixing member comprises a plurality of first fixing blocks 14, the intersection of the transverse groove 10 and the vertical groove 11 and the top end of the sliding block 13 are fixedly connected with the first fixing blocks 14;

[0042] The first fixing blocks 14 located at the transverse groove 10 are fixedly connected with the sliding rails 15 at both ends, the second fixing blocks 16 are slidingly connected with the sliding rails 15, the first fixing blocks 14 located at the vertical groove 11 are fixedly connected with one end of the support rods 17 at both ends, the other end of the support rods 17 penetrates the second fixing blocks 16 located at the same horizontal plane, and the first fixing blocks 14 and the second fixing blocks 16 are provided with connecting members.

[0043] In an embodiment of the present application, the second fixing blocks 16 are slidingly connected with the sliding rails 15 and are sleeved on the support rods 17, thereby realizing sliding, the positions of the plurality of connecting members on the front surface are adjusted by the plurality of first fixing blocks 14 and the plurality of second fixing blocks 16, so that the connecting members are adapted to test pieces 3 of different sizes.

[0044] As an optional implementation, the connecting member comprises a plug-in pipe 18 fixedly connected with the first fixing blocks 14 and the second fixing blocks 16 at one end, a plurality of connecting heads 19 are circumferentially hinged at the other end of the plug-in pipe 18, a plurality of connecting grooves 20 are circumferentially formed in the connecting pipe 4, the connecting heads 19 are adapted to the connecting grooves 20, and a stabilizing member is arranged in the plug-in pipe 18 and abuts against the connecting heads 19.

[0045] In an embodiment of the present application, the plug-in pipe 18 extends into the connecting pipe 4, and the connecting heads 19 are clamped into the connecting grooves 20 to realize the connection of the two.

[0046] As an optional implementation, the stabilizing member comprises a first electric telescopic rod 21 fixedly connected in the plug-in pipe 18, one end of a stabilizing block 22 is fixedly connected with the telescopic end of the first electric telescopic rod 21, one end of a connecting column 23 is rotatably connected with the other end of the stabilizing block 22, a threaded column 24 is fixedly connected with the other end of the connecting column 23, a threaded groove 25 is formed in the connecting pipe 4, the threaded column 24 is threadedly connected with the threaded groove 25, a second motor 26 is fixedly connected in the stabilizing block 22, and one end of the connecting column 23 extends into the stabilizing block 22 and is fixedly connected with the output shaft of the second motor 26.

[0047] In an embodiment of the present application, the first electric telescopic rod 21 drives the stabilizing block 22 to extrude the connecting heads 19, thereby realizing the connection of the connecting heads 19 and the connecting grooves 20, and the second motor 26 drives the threaded column 24 to rotate and threadedly connect into the threaded groove 25, thereby further ensuring the stability after connection.

[0048] As an optional implementation, the cleaning member comprises a plurality of second electric telescopic rods 27 fixedly connected to the plug-in pipe 18, and a cleaning plate 28 fixedly connected to the telescopic end of the second electric telescopic rod 27, wherein a through hole 29 is formed in the cleaning plate 28, and the cleaning plate 28 is sleeved on the plug-in pipe 18 through the through hole 29.

[0049] In an embodiment of the present application, the concrete sample is in a broken state after the test is completed, and the connection between the plug-in pipe 18 and the connecting pipe 4 is connected through the second electric telescopic rod 27 to push the connecting pipe 4 and the broken concrete block attached thereto to fall off from the plug-in pipe 18.

[0050] As an optional implementation, a plurality of brushes 30 are fixedly connected in the through hole 29.

[0051] In an embodiment of the present application, the brushes 30 are arranged to clean the residual dust on the plug-in pipe 18.

[0052] As an optional implementation, the number of the connecting pipes 4 arranged on one side of the test piece 3 is nine.

[0053] In an embodiment of the present application, the connecting pipes 4 are arranged in a nine-square grid.

[0054] As an optional implementation, a magnet layer 31 is coated on the connecting column 23, and the magnet layer 31 is used to adsorb the connecting head 19.

[0055] In an embodiment of the present application, when the connecting column 23 moves outward, the magnet layer 31 arranged therein adsorbs the extruded connecting head 19 on the connecting column 23, thereby limiting the contact, and after the contact is limited, the second electric telescopic rod 27 drives the cleaning plate 28 to push the broken concrete down the plug-in pipe 18, thereby cleaning the concrete block.

[0056] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A fully graded concrete direct pull test device, characterized in that: include: Test bench (1); A test assembly comprises a test frame (2) and two axial tensile members, wherein the test frame (2) is fixedly connected to the top of the test bench (1), and the two axial tensile members are respectively arranged on the inner wall of the test frame (2), and the two axial tensile members are arranged vertically and are respectively used to stretch the test piece (3) along the X axis and the Y axis; A connecting assembly comprising a plurality of connecting tubes (4) and a plurality of connecting pieces, wherein the plurality of connecting tubes (4) are respectively provided on the outer wall of the test piece (3), and the plurality of connecting pieces are respectively provided on the axial tension piece, and the axial tension piece is connected to the connecting tubes (4) via the connecting pieces; A cleaning assembly comprises a cleaning piece and a collecting trough (5), wherein the cleaning piece is arranged on the connecting piece and is used to clean concrete slag on the connecting piece, and the collecting trough (5) is fixedly connected to the bottom end of the test bench (1) and communicated with the bottom end of the test frame (2), and the collecting trough (5) is used to collect concrete slag; The axial tensioning member comprises two first bidirectional threaded rods (6), the two first bidirectional threaded rods (6) are rotatably connected to the two ends of the test frame (2), the two ends of the first bidirectional threaded rods (6) are respectively threadedly connected to movable plates (7), the test piece (3) is located between the two movable plates (7), a plurality of first motors (8) are fixedly connected to the test frame (2), and one end of the first bidirectional threaded rod (6) is fixedly connected to the output shaft of the first motor (8); The connecting member includes an adjusting plate (9), which is fixedly connected to one end of the movable plate (7) close to the test piece (3), and a transverse groove (10) and a vertical groove (11) are provided on the adjusting plate (9), and the transverse groove (10) and the vertical groove (11) are cross-arranged, and a second bidirectional threaded rod (12) is rotatably connected in the transverse groove (10) and the vertical groove (11), and a slider (13) is threadedly connected at both ends of the second bidirectional threaded rod (12), and the slider (13) is slidably connected in the transverse groove (10) and the vertical groove (11), and a fixing member is provided on the slider (13), and a plurality of the connecting members are distributed in an array on the fixing member and correspond one to one with a plurality of the connecting pipes (4) distributed in an array.

2. A fully graded concrete direct pull test device according to claim 1, characterized in that: The fixing member comprises a plurality of first fixing blocks (14), and the intersection of the transverse groove (10) and the vertical groove (11) and the top of the slider (13) are fixedly connected to the first fixing blocks (14); Both ends of the first fixed block (14) located in the transverse groove (10) are fixedly connected to a slide rail (15), and the slide rail (15) is slidably connected to a second fixed block (16). Both ends of the first fixed block (14) located in the vertical groove (11) are fixedly connected to one end of a support rod (17), and the other end of the support rod (17) passes through the second fixed block (16) located on the same horizontal plane. The first fixed block (14) and the second fixed block (16) are both provided with the connecting piece.

3. A fully graded concrete direct pull test device according to claim 2, characterized in that: The connecting member comprises a plug-in tube (18) with one end fixedly connected to the first fixed block (14) and the second fixed block (16); the other end of the plug-in tube (18) is hinged with a plurality of connecting heads (19) along the circumferential direction; a plurality of connecting grooves (20) are opened in the connecting pipe (4) along the circumferential direction; the connecting heads (19) are adapted to the connecting grooves (20); a stabilizing member is provided in the plug-in tube (18), and the stabilizing member abuts against the connecting head (19).

4. A fully graded concrete direct pull test device according to claim 3, characterized in that: The stabilizing member comprises a first electric telescopic rod (21) fixedly connected to the plug-in tube (18); the telescopic end of the first electric telescopic rod (21) is fixedly connected to one end of a stabilizing block (22); the other end of the stabilizing block (22) is rotatably connected to one end of a connecting column (23); the other end of the connecting column (23) is fixedly connected to a threaded column (24); a threaded groove (25) is provided in the connecting tube (4); the threaded column (24) is threadedly connected to the threaded groove (25); a second motor (26) is fixedly connected to the stabilizing block (22); one end of the connecting column (23) extends into the stabilizing block (22) and is fixedly connected to the output shaft of the second motor (26).

5. The fully graded concrete direct pull test device according to claim 3, characterized in that: The cleaning member comprises a plurality of second electric telescopic rods (27) fixedly connected to the plug-in tube (18); the telescopic ends of the second electric telescopic rods (27) are fixedly connected to cleaning plates (28); a through hole (29) is provided on the cleaning plate (28); and the cleaning plate (28) is sleeved on the plug-in tube (18) through the through hole (29).

6. A fully graded concrete direct pull test device according to claim 5, characterized in that: A plurality of brushes (30) are fixedly connected in the through hole (29).

7. The fully graded concrete direct pull test device according to claim 1, characterized in that: The number of the connecting pipes (4) located on one side of the test piece (3) is nine.

8. The fully graded concrete direct pull test device according to claim 4, characterized in that: The connecting column (23) is coated with a magnetic layer (31), and the magnetic layer (31) is used to absorb the connecting head (19).

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