Full-graded concrete straight tension test device

Abstract

The invention relates to the technical field of concrete test devices, and discloses a fully-graded concrete straight-pull test device which comprises a test bed, the test assembly comprises a test frame and two axial stretching pieces, and the two axial stretching pieces are arranged on the inner wall of the test frame respectively and used for stretching the test piece along the X axis and the Y axis respectively; the connecting assembly comprises a plurality of connecting pipes and a plurality of connecting pieces, the plurality of connecting pipes are respectively arranged on the outer wall of the test piece, the plurality of connecting pieces are respectively arranged on the axial stretching piece, and the axial stretching piece is connected with the connecting pipes through the connecting pieces; and the cleaning assembly comprises a cleaning piece and a collecting groove, the cleaning piece is arranged on the connecting piece and used for cleaning concrete residues on the connecting piece, and the collecting groove is fixedly connected to the bottom end of the test bed, communicates with the bottom end of the test frame and is used for collecting the concrete residues. According to the device, the sample blocks are conveniently mounted and dismounted, the device is suitable for test of the sample blocks with different sizes, uniform stress is ensured, and the overall test efficiency is improved.

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 aggregate composed of aggregates of different particle sizes. This helps reduce the voids in concrete and improve the strength and corrosion resistance of concrete. There are two test methods for measuring the tensile properties of concrete: direct tensile test and indirect methods (such as splitting test and bending test); among them, direct tensile test can directly obtain the relationship between the uniaxial tensile strength and elongation of concrete, thereby obtaining the tensile stress-strain relationship of concrete materials.

[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 precise enough. At the same time, the prefabricated parts are usually fixed in the center, which may easily lead to deviations during preparation or uneven force during subsequent tests, affecting the overall test effect. In addition, in the prior art, after the test is completed, the concrete blocks must usually be disassembled and cleaned before the test can be conducted 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 full-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 vertically arranged, and are respectively used to stretch the test piece along the X-axis and the Y-axis;

[0009] A connection assembly, comprising a plurality of connection tubes and a plurality of connection pieces, wherein the plurality of connection tubes are respectively arranged on the outer wall of the test piece, and the plurality of connection pieces are respectively arranged on the axial tension piece, and the axial tension piece is connected to the connection tubes through the connection pieces;

[0010] The cleaning component includes a cleaning piece and a collecting trough. The cleaning piece is arranged on the connecting piece and is used to clean the concrete slag on the connecting piece. The collecting trough is fixedly connected to the bottom end of the test bench and communicated with the bottom end of the test frame. The collecting trough is used to collect concrete slag.

[0011] According to a full-graded concrete straight-pull test device provided by the present invention, the axial tension member includes two first bidirectional threaded rods, the two first bidirectional threaded rods are rotatably connected to the two ends of the test frame respectively, the two ends of the first bidirectional threaded rod are respectively threadedly connected to movable plates, the test piece is located between the two movable 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 to the output shaft of the first motor.

[0012] According to a full-graded concrete straight-pull test device provided by the present invention, the connecting member includes an adjusting plate, the adjusting plate is fixedly connected to one end of the movable plate close to the test member, a transverse groove and a vertical groove are provided on the adjusting plate, the transverse groove and the vertical groove are cross-arranged, a second bidirectional threaded rod is rotatably connected in both the transverse groove and the vertical groove, both ends of the second bidirectional threaded rod are threadedly connected to sliders, the slider is slidably connected in the transverse groove and the vertical groove, a fixing member is provided on the slider, a plurality of the connecting members are distributed in an array on the fixing member, and correspond one-to-one to a plurality of the connecting pipes distributed in an array.

[0013] According to a full-graded concrete straight pull test device provided by the present invention, the fixing member comprises a plurality of first fixing blocks, and the intersection of the transverse groove and the vertical groove and the top of the sliding block are fixedly connected with the first fixing blocks;

[0014] Both ends of the first fixed block located in the horizontal groove are fixedly connected to sliding rails, and the second fixed block is slidably connected to the sliding rails. Both ends of the first fixed block located in the vertical groove are fixedly connected to one end of a support rod, and the other end of the support rod passes through the second fixed block located on the same horizontal plane. The connecting parts are provided on the first fixed block and the second fixed block.

[0015] According to a full-graded concrete straight-pull test device provided by the present invention, the connecting member includes a plug-in tube with one end fixedly connected to the first fixed block and the second fixed block, the other end of the plug-in tube is hinged with a plurality of connecting heads along the circumferential direction, a plurality of connecting grooves are opened in the connecting tube along the circumferential direction, the connecting heads are adapted to the connecting grooves, a stabilizing member is arranged in the plug-in tube, and the stabilizing member abuts against the connecting head.

[0016] According to a full-graded concrete straight-pull test device provided by the present invention, the stabilizing member includes a first electric telescopic rod fixedly connected to the plug-in tube, the telescopic end of the first electric telescopic rod is fixedly connected to one end of a stabilizing block, the other end of the stabilizing block is rotatably connected to one end of a connecting column, the other end of the connecting column is fixedly connected to a threaded column, a threaded groove is provided in the connecting tube, the threaded column is threadedly connected to the threaded groove, a second motor is fixedly connected to the stabilizing block, and one end of the connecting column extends into the stabilizing block and is fixedly connected to the output shaft of the second motor.

[0017] According to a full-graded concrete straight-pull test device provided by the present invention, the cleaning piece includes a plurality of second electric telescopic rods fixedly connected to the plug-in tube, the telescopic ends of the second electric telescopic rods are fixedly connected to a cleaning plate, a through hole is formed on the cleaning plate, and the cleaning plate is sleeved on the plug-in tube through the through hole.

[0018] According to the full-graded concrete direct pull test device provided by the present invention, a plurality of brushes are fixedly connected in the through hole.

[0019] According to a full-graded concrete direct pull test device provided by the present invention, the number of the plurality of connecting pipes located on one side of the test piece is nine.

[0020] According to a full-graded concrete direct pull test device provided by the present invention, the connecting column is coated with a magnet layer, and the magnet layer is used to adsorb the connecting head.

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

[0022] The present invention provides a fully graded concrete straight-pull test device, which places the test piece between two axial tensile members, connects the test piece to the connecting pipe through a set connecting piece, and realizes the installation of the test piece on the test device. After installation, the test piece is ensured to be in the center position, and the connecting pipes distributed in an array ensure that it is evenly stressed. The tensile test is carried out through the set axial tensile members. After the test is completed, the test piece is crushed, and the crushed test piece connected to the connection is cleaned and collected in the collection tank below through the set cleaning piece. The present application realizes the convenient installation and disassembly of the test piece, adapts to the test pieces of different sizes for testing, ensures that they are evenly stressed, and improves the overall test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the adjustment plate of the present invention;

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

[0027] Figure 4 This is a schematic diagram of the cleaning plate structure of the present invention;

[0028] Among them, 1. test bench; 2. test frame; 3. test piece; 4. connecting pipe; 5. collecting tank; 6. first two-way threaded rod; 7. moving plate; 8. first motor; 9. adjusting plate; 10. horizontal groove; 11. vertical groove; 12. second two-way threaded rod; 13. slider; 14. first fixed block; 15. slide rail; 16. second fixed block; 17. support rod; 18. plug-in tube; 19. connector; 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 following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0031] Reference Figure 1-Figure 4 The present invention provides a full-graded concrete direct pull test device, comprising:

[0032] Test bench 1;

[0033] The test assembly includes 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 vertically arranged, and are respectively used to stretch the test piece 3 along the X-axis and the Y-axis;

[0034] The connection assembly includes a plurality of connection tubes 4 and a plurality of connection pieces. The outer wall of the test piece 3 is provided with a plurality of connection tubes 4, and the plurality of connection pieces are provided on the axial tension piece. The axial tension piece is connected to the connection tubes 4 through the connection pieces.

[0035] The cleaning component includes a cleaning piece and a collecting tank 5. The cleaning piece is arranged on the connecting piece and is used to clean the concrete slag on the connecting piece. The collecting tank 5 is fixedly connected to the bottom end of the test bench 1 and communicated with the bottom end of the test frame 2. The collecting tank 5 is used to collect concrete slag.

[0036] In one embodiment of the present invention, the test piece 3 is placed between two axial tensile members and connected to the connecting tube 4 through a set connecting piece to achieve installation of the test piece 3 on the test device. After installation, the test piece 3 is ensured to be in the center position. At the same time, the connecting tubes 4 distributed in an array ensure that the force is uniform. The tensile test is carried out through the set axial tensile members. After the test is completed, the sample 3 is crushed, and the crushed sample blocks connected to the connection are cleaned by the set cleaning member and collected in the collection tank 5 below.

[0037] As an optional embodiment, the axial tensile member includes two first bidirectional threaded rods 6, which are rotatably connected at both ends of the test frame 2, and movable plates 7 are threadedly connected at both ends of the first bidirectional threaded rods 6. The test piece 3 is located between the two movable plates 7, and a plurality of first motors 8 are fixedly connected to the test frame 2. One end of the first bidirectional threaded rod 6 is fixedly connected to the output shaft of the first motor 8.

[0038] In one embodiment of the present invention, the two movable plates 7 are driven to move synchronously by a first motor 8, thereby achieving synchronous stretching. In addition, the synchronous movement in four directions realizes self-positioning of the test piece 3, ensuring that it is located at the center point for the axial tension test.

[0039] As an optional embodiment, 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. A transverse groove 10 and a vertical groove 11 are provided on the adjusting plate 9. The transverse groove 10 and the vertical groove 11 are cross-arranged. A second bidirectional threaded rod 12 is rotatably connected in the transverse groove 10 and the vertical groove 11. Both ends of the second bidirectional threaded rod 12 are threadedly connected to sliders 13. The slider 13 is slidably connected in the transverse groove 10 and the vertical groove 11. A fixing member is provided on the slider 13. A plurality of connecting members are distributed in an array on the fixing member, and correspond one-to-one to a plurality of connecting pipes 4 distributed in an array.

[0040] In one embodiment of the present invention, the position of the slider 13 is adjusted by setting the transverse groove 10, the vertical groove 11 and the corresponding second bidirectional threaded rod 12 so that the plurality of connectors correspond to the plurality of connecting tubes 4 on the same surface of the test piece 3 one by one.

[0041] As an optional embodiment, the fixing member includes 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 with the first fixing blocks 14;

[0042] Both ends of the first fixed block 14 located in the horizontal groove 10 are fixedly connected to the slide rails 15, and the second fixed block 16 is slidably connected to the slide rails 15. Both ends of the first fixed block 14 located in the vertical groove 11 are fixedly connected to one end of the 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. Connecting parts are provided on the first fixed block 14 and the second fixed block 16.

[0043] In one embodiment of the present invention, the second fixed block 16 is slidably connected to the slide rail 15 and is sleeved on the support rod 17 to achieve its sliding. The positions of the multiple connecting parts on the front are adjusted by setting a plurality of first fixed blocks 14 and a plurality of second fixed blocks 16 to adapt to test pieces 3 of different sizes.

[0044] As an optional embodiment, the connecting member includes a plug-in tube 18, one end of which is fixedly connected to the first fixed block 14 and the second fixed block 16, and 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 along the circumferential direction in the connecting tube 4, and the connecting heads 19 are adapted to the connecting grooves 20. A stabilizing member is arranged in the plug-in tube 18, and the stabilizing member is against the connecting head 19.

[0045] In one embodiment of the present invention, the plug-in tube 18 extends into the connecting tube 4 , and the connection between the two is achieved by snapping the connecting head 19 into the connecting groove 20 .

[0046] As an optional embodiment, the stabilizing member includes 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, and 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.

[0047] In one embodiment of the present invention, a first electric telescopic rod 21 is provided to drive a stabilizing block 22 to squeeze the connecting head 19, thereby realizing the connection between the connecting head 19 and the connecting groove 20, and a second motor 26 is used to drive the threaded column 24 to rotate so that it is threadedly connected to the threaded groove 25, thereby further ensuring stability after connection.

[0048] As an optional embodiment, the cleaning piece includes a plurality of second electric telescopic rods 27 fixedly connected to the plug-in tube 18, and the telescopic ends of the second electric telescopic rods 27 are fixedly connected to a cleaning plate 28, which has a through hole 29, and the cleaning plate 28 is sleeved on the plug-in tube 18 through the through hole 29.

[0049] In one embodiment of the present invention, after the test is completed, the concrete sample is in a broken state, the connection between the contact plug-in tube 18 and the connecting tube 4 is broken, and the connecting tube 4 and the attached broken concrete blocks are pushed off from the plug-in tube 18 by the second electric telescopic rod 27 .

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

[0051] In one embodiment of the present invention, the residual dust on the plug-in tube 18 is cleaned by a brush 30 .

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

[0053] In one embodiment of the present invention, a plurality of connecting pipes 4 are distributed in a nine-square grid.

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

[0055] In one embodiment of the present invention, the magnet layer 31 is arranged to adsorb the extruded connecting head 19 onto the connecting column 23 when the connecting column 23 moves outward, thereby contacting the limit position. After the contact position is reached, the second electric telescopic rod 27 drives the cleaning plate 28 to push the crushed concrete down the plug-in tube 18, thereby cleaning the concrete block.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A full-graded concrete direct pull test device, characterized in that: include: Test bench (1); A test assembly, comprising a test frame (2) and two axial stretching members, wherein the test frame (2) is fixedly connected to the top of the test bench (1), and the two axial stretching members are respectively arranged on the inner wall of the test frame (2), and the two axial stretching members are vertically arranged and are respectively used to stretch the test piece (3) along the X-axis and the Y-axis; A connection assembly, comprising a plurality of connection pipes (4) and a plurality of connection pieces, wherein the plurality of connection pipes (4) are respectively arranged on the outer wall of the test piece (3), and the plurality of connection pieces are respectively arranged on the axial tension piece, and the axial tension piece is connected to the connection pipes (4) via the connection pieces; A cleaning component 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 is connected to the bottom end of the test frame (2), and the collecting trough (5) is used to collect concrete slag.

2. A full-graded concrete direct pull test device according to claim 1, characterized in that: 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 rod (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).

3. A full-graded concrete direct pull test device according to claim 2, characterized in that: The connecting member comprises an adjusting plate (9), wherein the adjusting plate (9) 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), wherein the transverse groove (10) and the vertical groove (11) are arranged crosswise, and a second bidirectional threaded rod (12) is rotatably connected in each of 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 arranged on the slider (13), and a plurality of the connecting members are arranged in an array on the fixing member, and correspond one to one with a plurality of the connecting pipes (4) arranged in an array.

4. A full-graded concrete direct pull test device according to claim 3, 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 end of the sliding block (13) are both fixedly connected with 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.

5. A full-graded concrete direct pull test device according to claim 4, characterized in that: The connecting member comprises a plug-in tube (18) having one end fixedly connected to the first fixing block (14) and the second fixing 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 provided in the connecting tube (4) along the circumferential direction; the connecting heads (19) are matched with 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).

6. A full-graded concrete direct pull test device according to claim 5, characterized in that: The stabilizing member comprises a first electric telescopic rod (21) fixedly connected in 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 in 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).

7. A full-graded concrete direct pull test device according to claim 5, 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 formed on the cleaning plate (28); and the cleaning plate (28) is sleeved on the plug-in tube (18) through the through hole (29).

8. A full-graded concrete direct pull test device according to claim 7, characterized in that: A plurality of brushes (30) are fixedly connected in the through hole (29).

9. A full-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.

10. A full-graded concrete direct pull test device according to claim 6, characterized in that: The connection column (23) is coated with a magnetic layer (31), and the magnetic layer (31) is used to adsorb the connection head (19).

Images