Fiber reinforced rib anti-shearing clamp for hydraulic engineering detection

Abstract

The utility model relates to the technical field of engineering detection equipment, in particular to a fiber reinforced rib anti-shearing clamp for hydraulic engineering detection, which comprises a fiber reinforced rib anti-shearing clamp body for hydraulic engineering detection, the fiber reinforced rib anti-shearing clamp body for hydraulic engineering detection comprises a bottom plate, and a top plate is arranged on the upper side of the bottom plate. And a sleeve column is fixedly mounted on the bottom plate. According to the shearing test fixture, a lower blade is omitted and replaced by two identical upper blades, the upper blades are limiting blades and jointly act with the stabilizing seat arranged on the bottom plate to fix the rod body, and meanwhile, the limiting blades cannot interfere with the shearing acting force of the shearing blade, so that the shearing effect of the shearing blade is greatly improved. And meanwhile, the stabilizing seat, the shearing blade and the limiting blade in the clamp mechanism can be disassembled and assembled, combinations with different inner diameters can be replaced to meet the detection work of rod bodies with different nominal diameters, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering detection equipment, in particular to a fiber reinforced rib shearing clamp for water conservancy engineering detection. Background Art

[0002] The fiber reinforced steel bar shear fixture is a test tool specially used in the field of structural engineering. It is used to detect and evaluate the shear performance of fiber reinforced composite steel bars. This fixture is usually used for quality inspection of composite steel bar products in water conservancy projects, marine engineering and other water-related fields. In these fields, fiber reinforced composite steel bars are widely used due to their excellent mechanical properties and durability.

[0003] In water conservancy projects, the mechanical properties of soil are crucial to the stability and durability of the project. Traditional soil improvement technologies include the use of various additives and materials to improve the strength and stability of the soil. Fiber reinforcement technology is a new soil improvement method that evenly mixes fiber filaments into the soil to improve the shear, compression and tensile strength of the soil, increase the breaking toughness and permeability, and reduce the expansion and contraction of expansive soil and the degree of crack development. When testing the shear resistance of the reinforcement, the fiber reinforcement bar rod is first cut into 300mm long specimens and then placed in a double shear test device in the prior art. The shear strength is measured on a universal material testing machine. The specimen should be fixed at the center of the shear test bench and in contact with the upper loading device. No obvious gap should be seen between the loading surface and the specimen, and the load application rate is controlled between 30MP and 60MPa per minute.

[0004] During the above experiment, the specimen is not easy to fix. The upper and lower blades will be hit during the test, the loading will be uneven, and two failure surfaces will appear. These problems are closely related to the fixture of the specimen. Therefore, optimizing the test fixture can effectively reduce the problems that arise during the test. For this reason, we proposed a fiber-reinforced rib shear fixture for water conservancy project testing. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a fiber reinforced bar shearing clamp for water conservancy engineering inspection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fiber reinforced bar shear clamp for water conservancy project inspection, comprising a fiber reinforced bar shear clamp body for water conservancy project inspection, the fiber reinforced bar shear clamp body for water conservancy project inspection comprising a bottom plate, a top plate is arranged on the upper side of the bottom plate, a sleeve column is fixedly installed on the bottom plate, a sliding column is fixedly installed on the lower side of the top plate, the sliding column is slidably connected to the inner wall of the sleeve column, a mounting groove is opened on the bottom plate, a stabilizing seat is arranged on the inner side of the mounting groove, a mounting seat is arranged on the bottom of the top plate, a mounting cylinder and a sleeve are fixedly installed on the bottom of the mounting seat, a shearing blade is installed on the bottom of the mounting cylinder, a sliding cylinder is slidably installed on the inner side of the sleeve, and a limiting blade is installed on the bottom of the sliding cylinder; the shearing blade comprises a first arc-shaped blade, a first mounting rod is fixedly connected to the upper side of the first arc-shaped blade, and a first limiting hole is arranged on the first mounting rod; the limiting blade comprises a second arc-shaped blade, a second mounting rod is fixedly connected to the upper side of the second arc-shaped blade, and a second limiting hole is arranged on the second mounting rod.

[0008] Preferably, the bottom surface of the bottom plate and the top surface of the top plate are configured to be rough surfaces.

[0009] Preferably, the sleeve column and the sliding column are respectively arranged at the four corners of the base plate.

[0010] Preferably, the upper end surface of the stabilizing seat is designed as an arc groove, and the bottom size of the stabilizing seat is consistent with the inner side size of the installation groove.

[0011] Preferably, the mounting seat is screwed to the top plate via bolts.

[0012] Preferably, a first limiting bolt is threadedly installed on the side wall of the installation tube, and the cross-sectional size of the first limiting bolt matches the first limiting hole.

[0013] Preferably, a second limiting bolt is threadedly installed on the side wall of the slide cylinder, and the cross-sectional size of the second limiting bolt matches the second limiting hole.

[0014] Preferably, the inner diameters of the stabilizing seat, the first curved blade and the second curved blade are equal, and the stabilizing seat, the first curved blade and the second curved blade are correspondingly provided with three sets of different inner diameters for testing specimens of different diameters.

[0015] Compared with the related art, the fiber reinforced rib shearing fixture for water conservancy engineering inspection proposed by the utility model has the following beneficial effects:

[0016] In the utility model, a fiber reinforced rib shear clamp for water conservancy project inspection is described, by eliminating the lower blade in the shear test clamp, and replacing the lower blade with two identical upper blades, the upper blades are limit blades, and work together with the stabilizing seat arranged on the bottom plate to fix the rod body. For this reason, the utility model adds a stabilizing effect at the bottom to fix the inspection rod body and prevent it from rolling. In addition, the lower blade in the traditional clamp is designed as a limit blade, the limit blades are symmetrically arranged on both sides of the shear blade, and the limit blades are fixedly mounted on the slide cylinder. When the test rod body is placed on the stabilizing seat, the stabilizing blade automatically slides to the upper side of the inspection rod body under the action of gravity, and cooperates with the stabilizing seat at the bottom to realize the clamping effect on the test rod body, thereby ensuring the stability of the rod body during the test process. At the same time, the limit blade will not cause excessive clamping force on the upper end of the rod body, and the clamping force is the limit blade. Deadweight. In shear testing, the shear force exerted by the gravity on the shear blade in the middle part can be ignored. When the universal material testing machine is driven to load the top plate, the shear force is gradually exerted on the detection rod body by driving the shear blade on the lower side of the top plate. In the shearing process, the limit blade will not interfere with the shear blade in terms of the applied stress. Therefore, during shearing, two failure surfaces will not be generated, and the failure position is located near the action point of the shear blade. At the same time, in the shearing process, the limit blade and the bottom stabilizing seat always maintain a stable clamping effect on the detection rod body, so that the specimen is loaded more evenly when the shear strength is measured on the universal material testing machine. At the same time, the stabilizing seat, shear blade and limit blade in the fixture mechanism can be disassembled and installed. The symmetrical arrangement of three groups of stabilizing seats, shear blades and limit blades with different inner diameters can meet the function of fixing the rod body in the shearing process of fiber reinforced bars with different nominal diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural diagram of a fiber reinforced bar shear clamp for water conservancy engineering inspection proposed by the utility model Figure 1 ;

[0018] Figure 2 A three-dimensional structural diagram of a fiber reinforced bar shear clamp for water conservancy engineering inspection proposed by the utility model Figure 2 ;

[0019] Figure 3 The utility model is a three-dimensional disassembled schematic diagram of a fiber reinforced bar shearing clamp for water conservancy project inspection proposed by the utility model.

[0020] In the figure: 1, bottom plate; 2, top plate; 3, rough surface; 4, sleeve column; 5, sliding column; 6, mounting groove; 7, stabilizing seat; 8, mounting seat; 9, mounting cylinder; 10, shearing blade; 101, first arc-shaped blade; 102, first mounting rod; 103, first limiting hole; 11, first limiting bolt; 12, sleeve; 13, sliding cylinder; 14, limiting blade; 141, second arc-shaped blade; 142, second mounting rod; 143, second limiting hole; 15, second limiting bolt. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Reference Figure 1-3 , please refer to Figure 1-Figure 3 ,in, Figure 1 A three-dimensional structural diagram of a fiber reinforced bar shear clamp for water conservancy engineering inspection proposed by the utility model Figure 1 ; Figure 2 A three-dimensional structural diagram of a fiber reinforced bar shear clamp for water conservancy engineering inspection proposed by the utility model Figure 2 ; Figure 3 The utility model provides a three-dimensional disassembled schematic diagram of a fiber reinforced rib shearing clamp for water conservancy engineering inspection. A fiber reinforced rib shearing clamp for water conservancy engineering inspection includes: a fiber reinforced rib shearing clamp for water conservancy engineering inspection, the fiber reinforced rib shearing clamp for water conservancy engineering inspection body includes a bottom plate 1, a top plate 2 is arranged on the upper side of the bottom plate 1, a sleeve 4 is fixedly installed on the bottom plate 1, a sliding column 5 is fixedly installed on the lower side of the top plate 2, the sliding column 5 is slidably connected with the inner wall of the sleeve 4, a mounting groove 6 is opened on the bottom plate 1, a stabilizing seat 7 is arranged inside the mounting groove 6, a mounting seat 8 is arranged at the bottom of the top plate 2, a mounting cylinder 9 and a sleeve 12 are fixedly installed at the bottom of the mounting seat 8, a shearing blade 10 is installed at the bottom of the mounting cylinder 9, a sliding cylinder 13 is slidably installed inside the sleeve 12, a limiting blade 14 is installed at the bottom of the sliding cylinder 13, and the sleeve 4 and the sliding column 5 are respectively arranged at the four corners of the bottom plate 1.

[0023] Through the above-mentioned arrangement, the sleeve column 4 and the sliding column 5 are arranged at the four corners between the bottom plate 1 and the top plate 2. When the top plate 2 moves toward the bottom plate 1 under the pressure of the universal material testing machine, the four corners provide a vertical downward guiding effect for the top plate 2, thereby making the loading process smoother.

[0024] In this embodiment, the shearing blade 10 includes a first arc-shaped blade 101, a first mounting rod 102 is fixedly connected to the upper side of the first arc-shaped blade 101, and a first limiting hole 103 is arranged on the first mounting rod 102; the limiting blade 14 includes a second arc-shaped blade 141, a second mounting rod 142 is fixedly connected to the upper side of the second arc-shaped blade 141, and a second limiting hole 143 is arranged on the second mounting rod 142; a first limiting bolt 11 is screwed on the side wall of the mounting tube 9, and the cross-sectional size of the first limiting bolt 11 matches the first limiting hole 103; a second limiting bolt 15 is screwed on the side wall of the sliding tube 13, and the cross-sectional size of the second limiting bolt 15 matches the second limiting hole 143.

[0025] Through the arrangement in the above manner, the first curved blade 101 and the second curved blade 141 can be installed in the corresponding installation positions by plugging the installation rods on their upper sides, and the fixed limit is completed by the limit screws set on the corresponding installation positions, so that the installation and disassembly of the entire shear blade 10 and the limit blade 14 are extremely convenient, and different shear blades 10 and limit blades 14 can be replaced to adapt to the detection work of rods with different diameters, thereby improving applicability.

[0026] In this embodiment, the bottom surface of the bottom plate 1 and the top surface of the top plate 2 are set as rough surfaces 3.

[0027] By setting in the above manner, the rough surface 3 increases the roughness of the bottom surface of the bottom plate 1 and the top surface of the top plate 2, so that when the fixture is placed on the loading table of the universal material testing machine for loading, the entire fixture system is not easy to slide, the loading process is more stable, and the smooth progress of the test is guaranteed.

[0028] In this embodiment, the upper end surface of the stabilizing seat 7 is designed as an arc groove, and the bottom size of the stabilizing seat 7 is consistent with the inner size of the installation groove 6.

[0029] Through the above-mentioned arrangement and design, the stabilizing seat 7 can be directly placed on the inner side of the mounting groove 6 without being fixed. It only needs to limit the plane freedom of the stabilizing seat 7. Because the force direction of the stabilizing seat 7 is always downward during the entire shear test, the limitation of the mounting groove 6 is sufficient. At the same time, this installation design makes it very convenient and quick to replace the stabilizing seat 7.

[0030] In this embodiment, the mounting seat 8 is screwed to the top plate 2 by bolts.

[0031] Through the above-mentioned arrangement, the screw installation design of the mounting seat 8 is convenient for disassembling the mounting seat 8. When the shear blade 10 and the limiting blade 14 need to be replaced, the mounting seat 8 can be disassembled. After the installation on the mounting seat 8 is completed, the mounting seat 8 with the shear blade 10 and the limiting blade 14 installed is finally installed on the bottom of the top plate 2. The design here is mainly provided for the later replacement of the shear blade 10 and the limiting blade 14 when it is inconvenient.

[0032] In this method, the inner diameters of the stabilizing seat 7, the first curved blade 101 and the second curved blade 141 are equal. It should be noted here that the stabilizing seat 7, the first curved blade 101 and the second curved blade 141 are respectively provided in three groups, and the three groups have different inner diameters, so as to be suitable for testing specimens of different diameters.

[0033] The working principle of the fiber reinforced bar shearing fixture for water conservancy project inspection provided by the utility model is as follows:

[0034] When in use, the device is first placed on the loading table of the universal material testing machine, and the corresponding stabilizing seat 7, shear blade 10 and limit blade 14 are replaced according to the diameter of the test rod body. When replacing the stabilizing seat 7, it is only necessary to align the stabilizing seat 7 on the inner side corresponding to the test rod and place it in the mounting groove 6. When installing the first curved blade 101 and the second curved blade 141, they can be plugged into the corresponding mounting position through the mounting rod on the upper side thereof, and the installation of the shear blade 10 and the limit blade 14 can be completed by fixing and limiting the position through the limit screws set on the side of the corresponding mounting position. Subsequently, the detection rod body is placed on the stabilizing seat 7, and the upper top plate 2 is slowly lowered so that the upper shear blade 10 touches the upper side of the test rod body and then the hand is released. The universal material testing machine is started to load and pressurize the top plate 2, and the top plate 2 drives the first curved blade 101 to shear and pressurize the test rod body. When a clear crack appears in the action area of ​​the first curved blade 101, the pressurization is stopped, and the loading stress-strain curve displayed on the terminal device of the universal testing machine is observed to analyze the detection results.

[0035] Compared with the related art, the fiber reinforced rib shearing fixture for water conservancy engineering inspection provided by the utility model has the following beneficial effects:

[0036] The utility model provides a fiber reinforced rib shear clamp for water conservancy project inspection. The utility model eliminates the lower blade in the traditional shear test clamp and replaces the lower blade with two identical upper blades. The upper blade is a limiting blade 14, which works together with a stabilizing seat 7 arranged on the bottom plate 1 to fix the rod body. At the same time, the limiting blade 14 will not interfere with the shearing force of the shearing blade 10, so that two damaged surfaces will not appear during the inspection process. At the same time, the stabilizing seat 7, the shearing blade 10 and the limiting blade 14 in the clamp mechanism can all be disassembled and installed, and combinations of different inner diameters can be replaced to meet the inspection work of rod bodies with different nominal diameters, thereby improving the scope of application.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fiber reinforced bar shear fixture for water conservancy project inspection, characterized in that: The invention comprises a fiber reinforced rib shearing fixture body for water conservancy engineering inspection, wherein the fiber reinforced rib shearing fixture body comprises a bottom plate (1), a top plate (2) is arranged on the upper side of the bottom plate (1), a sleeve column (4) is fixedly installed on the bottom plate (1), a sliding column (5) is fixedly installed on the lower side of the top plate (2), the sliding column (5) is slidably connected to the inner wall of the sleeve column (4), a mounting groove (6) is opened on the bottom plate (1), a stabilizing seat (7) is arranged on the inner side of the mounting groove (6), a mounting seat (8) is arranged at the bottom of the top plate (2), a mounting cylinder (9) and a sleeve (12) are fixedly installed at the bottom of the mounting seat (8), a shearing blade (10) is installed at the bottom of the mounting cylinder (9), a sliding cylinder (13) is slidably installed on the inner side of the sleeve (12), and a limiting blade (14) is installed at the bottom of the sliding cylinder (13); The shear blade (10) comprises a first arc-shaped blade (101), the upper side of the first arc-shaped blade (101) is fixedly connected to a first mounting rod (102), and the first mounting rod (102) is provided with a first limiting hole (103); The limiting blade (14) comprises a second arc-shaped blade (141), the upper side of the second arc-shaped blade (141) is fixedly connected to a second mounting rod (142), and the second mounting rod (142) is provided with a second limiting hole (143).

2. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1 is characterized in that: The bottom surface of the bottom plate (1) and the top surface of the top plate (2) are configured as rough surfaces (3).

3. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1 is characterized in that: The sleeve column (4) and the sliding column (5) are respectively arranged at the four corners of the bottom plate (1).

4. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1, characterized in that: The upper end surface of the stabilizing seat (7) is designed as an arc groove, and the bottom size of the stabilizing seat (7) is consistent with the inner side size of the installation groove (6).

5. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1, characterized in that: The mounting seat (8) is screwed to the top plate (2) via bolts.

6. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1, characterized in that: A first limiting bolt (11) is threadedly mounted on the side wall of the mounting tube (9), and the cross-sectional size of the first limiting bolt (11) matches the first limiting hole (103).

7. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1, characterized in that: A second limiting bolt (15) is threadedly mounted on the side wall of the slide cylinder (13), and the cross-sectional size of the second limiting bolt (15) matches the second limiting hole (143).

8. The fiber reinforced bar shearing fixture for water conservancy engineering inspection according to claim 1, characterized in that: The inner diameters of the stabilizing seat (7), the first arc-shaped blade (101) and the second arc-shaped blade (141) are equal.

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