Adjustable concrete tensile test clamping device
By designing an adjustable concrete tensile test clamping device, the problem of clamp adaptability was solved, and stable clamping of specimens of different shapes and sizes was achieved, thereby improving test efficiency and accuracy.
Patent Information
- Application Number
- CN202423008927.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In existing concrete tensile testing, the fixtures are difficult to adapt to specimens of different shapes and sizes, which affects the progress of the test.
An adjustable concrete tensile test clamping device was designed, including a tie rod, an adjustment part, and a clamping part. The clamping part is positioned by a slot, and the adjustment part is adjusted to accommodate dumbbell-shaped specimens of different widths.
It achieves stable clamping of specimens of different shapes and sizes, prevents displacement, and improves the efficiency and accuracy of the test.
Smart Images
Figure CN223727529U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete tensile fixture technical field especially, relates to adjustable concrete tensile test clamping device. BACKGROUND
[0002] Concrete tensile detection is an important means of evaluating its tensile performance, and it is of great significance to ensure structural safety and improve the reliability of engineering design. The method of concrete tensile detection mainly includes uniaxial direct tensile test, splitting tensile test, dynamic axial tension test, etc. Uniaxial direct tensile test is a commonly used method of concrete tensile detection, which evaluates the tensile performance of concrete test piece by measuring the stress-strain curve under uniaxial tension.
[0003] The concrete is mostly connected with steel bars and then installed and fixed on the MTS universal testing machine for testing when performing the tensile test. This installation and fixing method is prone to sliding and falling. During the tensile test, clamps are also used to fix the concrete test piece. However, because the sizes and shapes of the concrete test pieces are different, especially the dumbbell-shaped test pieces with different end widths, multiple different clamps need to be prepared for use, which affects the test progress.
[0004] Therefore, in view of the above problems, an adjustable concrete tensile test clamping device is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model in view of the prior art's insufficient, develop a kind of adjustable concrete tensile test clamping device, this utility model can be adapted to the clamping of concrete test piece of different shape size.
[0006] The technical scheme for solving the technical problems of the utility model is as follows: an adjustable concrete tensile test clamping device, comprising a pull rod, an adjusting part is arranged on the pull rod, the adjusting part is symmetrically provided with a support frame, a clamping part is arranged on the support frame, the clamping part comprises a limiting plate, and a clamping groove is arranged in the limiting plate.
[0007] The two ends of the concrete tensile test piece are clamped by two clamping devices, the test piece is clamped and fixed by the clamping part, the clamping groove on the clamping part is used to position the test piece to prevent the test piece from shifting, the clamping size of the clamping part is adjusted by the adjusting part, and the dumbbell-shaped test piece with different end widths is suitable.
[0008] As a preferred, the clamping part further comprises a connecting shaft, a clamping piece and an anti-skid table, the connecting shaft is arranged on the support frame, the connecting shaft is rotatably connected with the clamping piece, the clamping piece is located below the limiting plate, and the anti-skid table is arranged at the position close to the limiting plate of the clamping piece.
[0009] The clamping pieces and the limiting plates symmetrically arranged together clamp the test piece, the clamping pieces are rotatably arranged on the support frame through the connecting shafts, the angle of the clamping pieces is conveniently adjusted, and the anti-skid tables are arranged on the clamping pieces, so that the clamping firmness is improved.
[0010] Preferably, the clamping part further comprises a clamping plate, screw holes, positioning holes, a first positioning bolt and a second positioning bolt, a plurality of screw holes are arranged on the clamping piece and the support frame, a plurality of positioning holes are arranged on the clamping plate, the clamping plate is symmetrically arranged on both sides of the support frame, the clamping plate is connected with the clamping piece through the first positioning bolt, the screw hole and the positioning hole, and the clamping plate is connected with the support frame through the second positioning bolt, the screw hole and the positioning hole.
[0011] After the angle of the clamping piece is adjusted, the clamping piece is fixed through the first positioning bolt, the support frames symmetrically arranged are fixed through the second fixing bolt, and the spacing between the support frames is prevented from being changed to affect the clamping effect.
[0012] Preferably, the adjusting part comprises a threaded sleeve, a first threaded rod, a connecting head and a first rotating handle, the threaded sleeve is arranged on the support frame, the threaded sleeve is horizontally arranged, the threaded sleeve is arranged in parallel with the clamping plate, the threaded sleeve is threadedly connected with the first threaded rod, the first threaded rod is provided with the connecting head, the connecting head is provided with the first rotating handle, and the first rotating handle is perpendicular to the first threaded rod.
[0013] The first threaded rod is threadedly connected with the threaded sleeve, the support frame is horizontally moved by rotating the first threaded rod, the distance between the support frames is adjusted, and the spacing between the clamping pieces is adjusted.
[0014] Preferably, the adjusting part further comprises a limiting table, a guide hole, a mounting bearing and a connecting column, the limiting table is arranged between adjacent first threaded rods, the mounting bearings are symmetrically arranged on both sides of the limiting table, the first threaded rod is connected with the mounting bearing, the guide hole is vertically arranged in the limiting table, the connecting column is slidably connected in the guide hole, and the lower end of the connecting column is connected with the limiting plate.
[0015] The first threaded rod is arranged on the mounting bearing, the position of the first threaded rod is positioned, and the first threaded rod is prevented from being deviated.
[0016] Preferably, the adjusting part further comprises a mounting table, a second rotating handle, a second threaded rod, a threaded hole, a sleeve, a limiting groove and a limiting block, the sleeve is arranged above the limiting table, the sleeve is communicated with the guide hole, the limiting grooves are symmetrically arranged in the sleeve, the sliding blocks are slidably connected in the limiting grooves, the sliding blocks are symmetrically arranged on the connecting column, the second threaded rod is arranged on the connecting column, the second threaded rod is threadedly connected with the mounting table through the threaded hole, the mounting table is symmetrically provided with the second rotating handle, and the lower end of the mounting table is rotatably connected with the sleeve.
[0017] The mounting table is rotated by using the second rotating handle, the threaded hole in the mounting table is threadedly connected with the second threaded rod, the second threaded rod drives the connecting column and the limiting plate to be connected, and the limiting plate is prevented from rotating under the action of the limiting groove and the limiting block.
[0018] As preferred, the pull rod is provided with a bolt hole, the pull rod is arranged on a fixing table, and the fixing table is arranged on the mounting table.
[0019] The pull rod is arranged on the testing machine through the bolt hole to perform subsequent tensile testing.
[0020] The effects provided in the content of the utility model are only the effects of the embodiments, and are not all the effects of the utility model, and the above technical scheme has the following advantages or beneficial effects:
[0021] The two ends of the concrete tensile test piece are clamped by two clamping devices, the test piece is clamped and fixed by the clamping part, the clamping part is provided with a clamping groove to position the test piece and prevent the test piece from deviating, and the clamping size of the clamping part is adjusted by the adjusting part, so that the dumbbell-shaped test piece with different end widths is applicable.
[0022] The clamping of the test piece is realized by the symmetrically arranged clamping pieces and limiting plates, the clamping pieces are rotatably arranged on the support frames through connecting shafts, the angle of the clamping pieces is conveniently adjusted, the anti-slip table is arranged on the clamping pieces to improve the firmness of clamping, the first positioning bolt is used to fix the clamping pieces after the angle of the clamping pieces is adjusted, the symmetrically arranged support frames are fixed by the second fixing bolt, and the spacing between the support frames is prevented from changing to affect the clamping effect. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.
[0024] Figure 1 It is a structural view of the utility model.
[0025] Figure 2 It is a right view of the utility model.
[0026] Figure 3 It is a sectional structure schematic view of the limiting table of the utility model.
[0027] Figure 4 It is an enlarged schematic view of the structure at A in the utility model. Figure 3
[0028] In the figure, 1, pull rod; 2, support frame; 3, limiting plate; 4, clamping groove; 5, connecting shaft; 6, clamping piece; 7, anti-skid table; 8, clamping force plate; 9, screw hole; 10, positioning hole; 11, first positioning bolt; 12, second positioning bolt; 13, threaded sleeve; 14, first threaded rod; 15, connecting head; 16, first rotating handle; 17, limiting table; 18, guide hole; 19, mounting bearing; 20, connecting column; 21, mounting table; 22, second rotating handle; 23, second threaded rod; 24, threaded hole; 25, sleeve; 26, limiting groove; 27, limiting block; 28, bolt hole; 29, fixed table. DETAILED DESCRIPTION
[0029] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments, and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples to implement the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. In addition, the present application can refer to the same reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present application omits the description of known components and processing techniques and processes to avoid unnecessary limitations on the present application. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] As Figures 1 to 4As shown, an adjustable concrete tensile test clamping device includes a pull rod 1, an adjusting part is arranged on the pull rod 1, the adjusting part is symmetrically provided with a support frame 2, a clamping part is arranged on the support frame 2, the clamping part includes a limiting plate 3, and a clamping groove 4 is arranged in the limiting plate 3. The two ends of a concrete tensile test piece are clamped by two clamping devices, the test piece is clamped and fixed by the clamping part, the clamping groove 4 arranged on the clamping part is used for positioning the test piece, the test piece is prevented from deviating, the clamping size of the clamping part is adjusted by the adjusting part, and dumbbell-shaped test pieces with different end widths are suitable.
[0031] The clamping part further includes a connecting shaft 5, a clamping piece 6 and an anti-skid table 7, the connecting shaft 5 is arranged on the support frame 2, the connecting shaft 5 is rotationally connected with the clamping piece 6, the clamping piece 6 is located below the limiting plate 3, and the anti-skid table 7 is arranged at a position close to the limiting plate 3. The symmetrically arranged clamping piece 6 and the limiting plate 3 jointly clamp the test piece, the clamping piece 6 is rotationally arranged on the support frame 2 through the connecting shaft 5, the angle of the clamping piece 6 is conveniently adjusted, and the anti-skid table 7 arranged on the clamping piece 6 improves the firmness of clamping.
[0032] The clamping part further includes a clamping force plate 8, a screw hole 9, a positioning hole 10, a first positioning bolt 11 and a second positioning bolt 12, a plurality of screw holes 9 are arranged on the clamping piece 6 and the support frame 2, a plurality of positioning holes 10 are arranged on the clamping force plate 8, the clamping force plate 8 is symmetrically arranged on the two sides of the support frame 2, the clamping force plate 8 is connected with the clamping piece 6 through the first positioning bolt 11, the screw hole 9 and the positioning hole 10, and the clamping force plate 8 is connected with the support frame 2 through the second positioning bolt 12, the screw hole 9 and the positioning hole 10. After the angle of the clamping piece 6 is adjusted, the clamping piece 6 is fixed through the first positioning bolt 11, the symmetrically arranged support frames 2 are fixed through the second positioning bolt, and the spacing between the support frames 2 is prevented from changing to affect the clamping effect.
[0033] The adjusting part includes a threaded sleeve 13, a first threaded rod 14, a connecting head 15 and a first rotating handle 16, the threaded sleeve 13 is arranged on the support frame 2, the threaded sleeve 13 is horizontally arranged, the threaded sleeve 13 is arranged in parallel with the clamping force plate 8, the threaded sleeve 13 is threadedly connected with the first threaded rod 14, the first threaded rod 14 is provided with the connecting head 15, the connecting head 15 is provided with the first rotating handle 16, and the first rotating handle 16 is perpendicular to the first threaded rod 14. The first threaded rod 14 is threadedly connected with the threaded sleeve 13, the support frame 2 is horizontally moved by rotating the first threaded rod 14, and then the distance between the support frames 2 is adjusted, so that the spacing between the clamping pieces 6 is adjusted.
[0034] The adjusting part further comprises a limiting table 17, a guide hole 18, a mounting bearing 19 and a connecting column 20, the limiting table 17 is arranged between the adjacent first threaded rods 14, the mounting bearings 19 are symmetrically arranged on the two sides of the limiting table 17, the first threaded rods 14 are connected with the mounting bearings 19, the guide hole 18 is vertically arranged in the limiting table 17, the connecting column 20 is slidingly connected in the guide hole 18, and the lower end of the connecting column 20 is connected with the limiting plate 3. The first screw rod is arranged on the mounting bearing 19, the position of the first screw rod is positioned, and the first screw rod is prevented from deviating.
[0035] The adjusting part further comprises a mounting table 21, a second rotating handle 22, a second threaded rod 23, a threaded hole 24, a sleeve 25, a limiting groove 26 and a limiting block 27, the sleeve 25 is arranged above the limiting table 17, the sleeve 25 is communicated with the guide hole 18, the limiting grooves 26 are symmetrically arranged in the sleeve 25, the sliding blocks are slidingly connected in the limiting grooves 26, the sliding blocks are symmetrically arranged on the connecting column 20, the second threaded rod 23 is arranged on the connecting column 20, the second threaded rod 23 is threadedly connected with the mounting table 21 through the threaded hole 24, the second rotating handles 22 are symmetrically arranged on the mounting table 21, and the lower end of the mounting table 21 is rotationally connected with the sleeve 25. The mounting table 21 is rotated by using the second rotating handle 22, the threaded hole 24 in the mounting table 21 is threadedly connected with the second threaded rod 23, the second threaded rod 23 drives the connecting column 20 and the limiting plate 3 to be connected, and the limiting plate 3 is prevented from rotating under the action of the limiting groove 26 and the limiting block 27.
[0036] The bolt hole 28 is arranged on the pull rod 1, the pull rod 1 is arranged on the fixed table 29, and the fixed table 29 is arranged on the mounting table 21. The pull rod 1 is arranged on the testing machine through the bolt hole 28 to perform subsequent tensile testing.
[0037] Working principle: the first threaded rod 14 is driven to rotate by rotating the first rotating handle 16, the distance between the supporting frames 2 is adjusted through the threaded cooperation between the first threaded rod 14 and the sleeve, the test piece is clamped by the symmetrically-arranged clamping pieces 6 and the limiting plate 3, the supporting frame 2 and the clamping piece 6 are fixed on the clamping force plate 8, the mounting table 21 is rotated, the threaded hole 24 on the mounting table 21 is matched with the second threaded rod 23, the limiting plate 3 is driven to move, and the limiting plate 3 is pressed on the surface of the test piece.
[0038] Although the specific embodiments of the utility model are described in combination with the drawings, the description is not a limitation on the protection scope of the utility model, various modifications or changes made by the person skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.
Claims
1. An adjustable concrete tensile test gripping device characterized by: Including pull rod (1), the adjusting part is arranged on the pull rod (1), the adjusting part is symmetrically provided with support frame (2), the clamping part is arranged on the support frame (2), the clamping part includes limiting plate (3), the clamping part is provided with clamping groove (4) in the limiting plate (3); The clamping part further includes connecting shaft (5), clamping piece (6) and anti-skid platform (7), the connecting shaft (5) is arranged on the support frame (2), the connecting shaft (5) is rotatably connected with the clamping piece (6), the clamping piece (6) is located below the limiting plate (3), the anti-skid platform (7) is arranged at the position close to the limiting plate (3) of the clamping piece (6); The clamping part further includes clamping force plate (8), screw hole (9), positioning hole (10), first positioning bolt (11) and second positioning bolt (12), a plurality of screw holes (9) are arranged on the clamping piece (6) and the support frame (2), a plurality of positioning holes (10) are arranged on the clamping force plate (8), the clamping force plate (8) is symmetrically arranged on both sides of the support frame (2), the clamping force plate (8) is connected with the clamping piece (6) through the first positioning bolt (11), the screw hole (9) and the positioning hole (10), and the clamping force plate (8) is connected with the support frame (2) through the second positioning bolt (12), the screw hole (9) and the positioning hole (10).
2. An adjustable concrete tensile test clamp apparatus as claimed in claim 1, wherein: The adjusting part includes threaded sleeve (13), first threaded rod (14), connecting head (15) and first rotating handle (16), the threaded sleeve (13) is arranged on the support frame (2), the threaded sleeve (13) is horizontally arranged, the threaded sleeve (13) is arranged in parallel with the clamping force plate (8), the threaded sleeve (13) is threadedly connected with the first threaded rod (14), the first threaded rod (14) is provided with the connecting head (15), the connecting head (15) is provided with the first rotating handle (16), and the first rotating handle (16) is perpendicular to the first threaded rod (14).
3. An adjustable concrete tensile test clamp apparatus as claimed in claim 2, wherein: The adjusting part further includes limiting platform (17), guide hole (18), mounting bearing (19) and connecting column (20), the limiting platform (17) is arranged between adjacent first threaded rods (14), the mounting bearings (19) are symmetrically arranged on both sides of the limiting platform (17), the first threaded rod (14) is connected with the mounting bearing (19), the guide hole (18) is vertically arranged in the limiting platform (17), the connecting column (20) is slidingly connected in the guide hole (18), and the lower end of the connecting column (20) is connected with the limiting plate (3).
4. An adjustable concrete tensile test clamp apparatus as claimed in claim 3, wherein: The adjusting part further comprises a mounting table (21), a second rotating handle (22), a second threaded rod (23), a threaded hole (24), a sleeve (25), a limiting groove (26) and a limiting block (27), the sleeve (25) is arranged above the limiting table (17), the sleeve (25) is communicated with the guide hole (18), the limiting grooves (26) are symmetrically arranged in the sleeve (25), the sliding blocks are slidably connected in the limiting grooves (26), the sliding blocks are symmetrically arranged on the connecting column (20), the second threaded rod (23) is arranged on the connecting column (20), the mounting table (21) is threadedly connected with the second threaded rod (23) through the threaded hole (24), the mounting table (21) is symmetrically provided with the second rotating handle (22), and the lower end of the mounting table (21) is rotationally connected with the sleeve (25).
5. An adjustable concrete tensile test clamp apparatus as defined in claim 1, wherein: The pull rod (1) is provided with a bolt hole (28), the pull rod (1) is arranged on a fixing table (29), and the fixing table (29) is arranged on the mounting table (21).