Device for testing structure relation of aeolian sand concrete sample

Abstract

The utility model discloses an aeolian sand concrete sample structure relation testing device. The aeolian sand concrete sample structure relation testing device comprises a detection mechanism and a rack, the detection mechanism is installed on the rack, the detection mechanism comprises a first hoop ring and a second hoop ring, a threaded rod is installed between the first hoop ring and the second hoop ring in a threaded mode, a rotary knob is installed at the lower end of the threaded rod, and the rotary knob is installed on the rack. A threaded sleeve is movably mounted at the upper end of the threaded rod and slidably mounted on the second shroud ring. According to the aeolian sand concrete sample structure relation testing device, the connecting effect of the first hoop ring and the second hoop ring is achieved by arranging the threaded rod, the telescopic rod and other frameworks, compared with an existing mode that the first hoop ring and the second hoop ring are independently installed, integral installation is more convenient, the installation steps can be reduced, and the installation efficiency is improved. In addition, the distance between the first shroud ring and the second shroud ring can be accurately adjusted through the threaded rod.

Description

Technical Field

[0001] The utility model relates to the technical field of aeolian sand concrete experimental equipment, in particular to a device for testing the structural relationship of aeolian sand concrete specimens. Background Art

[0002] The constitutive relationship of concrete is a mathematical model that describes the deformation and failure laws of concrete materials under stress. It is one of the important contents of concrete mechanics research. Concrete is a complex nonlinear material, and its constitutive relationship can be described by a stress-strain curve. In the elastic stage, the stress-strain relationship of concrete can be approximated as a linear relationship, that is, stress is proportional to strain. However, after exceeding the elastic limit, concrete will experience inelastic deformation, and the stress-strain relationship becomes complicated.

[0003] In order to intuitively reflect the stress-strain relationship of concrete under external force, pressure testing machines and mechanical sensors are usually used in actual research and images are drawn with the support of computer software. The experimental equipment involved includes displacement meters, hoops and other materials.

[0004] In the prior art, two hoops are used in the experiment, which are located at equidistant positions vertically in the center of the concrete. They are installed separately during installation. At the same time, it is necessary to adjust the distance between the two hoops and the distance between the hoops and the pressure platform. This operation is relatively cumbersome and requires a long experimental preparation time.

[0005] Therefore, it is necessary to provide a test device for the structural relationship of aeolian sand concrete specimen to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a device for testing the structural relationship of aeolian sand concrete specimen, which can facilitate the installation of the hoop and the distance adjustment, thereby improving the experimental efficiency.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A device for testing the structural relationship of aeolian sand concrete specimens comprises: a detection mechanism and a frame, wherein the detection mechanism is mounted on the frame, the detection mechanism comprises a first hoop and a second hoop, a threaded rod is threadedly mounted between the first hoop and the second hoop, a knob is mounted on the lower end of the threaded rod, a threaded sleeve is movably mounted on the upper end of the threaded rod, the threaded sleeve can be slidably mounted on the second hoop, a plurality of positioning rods are arranged on the outer walls of the first hoop and the second hoop, and the first hoop and the second hoop brackets are also provided with telescopic rods.

[0009] Preferably, the positioning rod is slidably connected to the first hoop and the second hoop, a handle is provided on the side of the positioning rod away from the first hoop and the second hoop, and a spring is provided on the periphery of the positioning rod.

[0010] Preferably, one end of the positioning rod close to the first hoop and the second hoop is a pointed end.

[0011] Preferably, a limiting ring is further provided on the outer wall of the positioning rod.

[0012] Preferably, the telescopic rod is composed of two rods that can slide relative to each other, and a scale is provided on the surface of the telescopic rod.

[0013] Preferably, the telescopic rod is made of a transparent material, an elastic rope is provided inside the telescopic rod, the lower end of the elastic rope is aligned with the upper end of the first hoop, and the upper end of the elastic rope is aligned with the lower end of the second hoop.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model realizes the connection effect of the first hoop and the second hoop by setting a structure such as a threaded rod and a telescopic rod. Compared with the existing method of installing the first hoop and the second hoop separately, the integral installation is more convenient and can reduce the installation steps. In addition, the distance between the first hoop and the second hoop can be accurately adjusted by the threaded rod;

[0016] (2) The utility model realizes the effect of pushing the positioning rod to move by setting a spring. Compared with the bolt-type positioning rod, the clamping speed is faster by applying pressure to the positioning rod through the spring, and thus it is easier to operate;

[0017] (3) The utility model provides an elastic rope to facilitate workers to align the middle position of the concrete test block, that is, the installation position of the detection mechanism on the concrete test block can be determined without using a ruler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a test device for the structure relationship of aeolian sand concrete specimen provided by the utility model;

[0019] Figure 2 A schematic structural diagram of a first-angle view of a testing mechanism of a test device for testing the structural relationship of aeolian sand concrete specimen provided by the utility model;

[0020] Figure 3 for Figure 1 The left side view of the testing mechanism of the test device for the structural relationship of aeolian sand concrete specimen shown;

[0021] Figure 4A top view of a detection mechanism of a test device for testing the structural relationship of aeolian sand concrete specimen provided by the utility model;

[0022] Figure 5 It is a structural schematic diagram of the second viewing angle of the detection mechanism of the aeolian sand concrete specimen structure relationship testing device provided by the utility model.

[0023] Among them, the names corresponding to the figure numbers are: 100, detection mechanism; 101, first hoop; 102, second hoop; 103, threaded rod; 104, knob; 105, positioning rod; 106, threaded sleeve; 107, handle; 108, spring; 109, limit ring; 110, telescopic rod; 200, frame. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0025] First embodiment:

[0026] like Figure 1-3As shown, the test device for the constitutive relationship of aeolian sand concrete specimen provided by the utility model comprises: a detection mechanism 100 and a frame 200, the detection mechanism 100 is installed on the frame 200, the detection mechanism 100 is a device for detecting the constitutive relationship of the concrete sample, reflecting the stress-strain relationship of the concrete sample under pressure, the frame 200 is a pressure test or compressive strength test device in the prior art, specifically, the detection mechanism 100 comprises a first hoop 101 and a second hoop 102, the first hoop 101 and the second hoop 102 are made of lightweight metal rings, in a circular ring shape, and the 100mm*100mm*300mm concrete test block used in the experiment is located inside the first hoop 101 and the second hoop 102 A threaded rod 103 is threadedly installed between the first hoop 101 and the second hoop 102. The threaded rod 103 serves to connect the first hoop 101 and the second hoop 102, and can also adjust the distance between the first hoop 101 and the second hoop 102. A knob 104 is installed at the lower end of the threaded rod 103, and a threaded sleeve 106 is movably installed at the upper end of the threaded rod 103. The threaded sleeve 106 is threadedly connected to the threaded rod 103, and the threaded sleeve 106 can be slidably installed on the second hoop 102. For example, a thread is provided on the outer wall of the threaded sleeve 106 and a nut is installed. The nut is installed at the lower end of the second hoop 102. The connection relationship between the threaded sleeve 106 and the second hoop 102 is adjusted by tightening the nut. When the knob 104 is turned, the knob 104 drives the threaded rod 103 to move and rotate, and the end of the threaded rod 103 rotates in the threaded sleeve 106 and then moves upward, and the knob 104 drives the first hoop 101 to move upward, so as to adjust the distance between the first hoop 101 and the second hoop 102. The outer walls of the first hoop 101 and the second hoop 102 are provided with a plurality of positioning rods 105, and the positioning rods 105 are respectively arranged at four positions on the first hoop 101 and the second hoop 102, so as to locate the concrete test block inside the first hoop 101 and the second hoop 102, and at the same time, the detection mechanism 100 is installed on the concrete test block. In the prior art, bolts are used as the positioning rods 105, and the first hoop 101 and the second hoop 102 are screwed together to form a plurality of positioning rods 105. The concrete block pressure is applied in a threaded connection manner to achieve the effect of installing the detection mechanism 100 on the concrete test block. The first hoop ring 101 and the second hoop ring 102 brackets are still provided with a telescopic rod 110, and the telescopic rod 110 is used to reinforce the connection between the first hoop ring 101 and the second hoop ring 102. When in use, the concrete test block is first placed on the platform, and then the device is put on the concrete test block from top to bottom, and the knob 104 is rotated to adjust the distance between the first hoop ring 101 and the second hoop ring 102 to a preset value. Finally, the positioning rod 105 is used to fix the detection mechanism 100 on the concrete test block. After the nut on the threaded sleeve 106 is loosened, the connection relationship between the threaded sleeve 106 and the second hoop ring 102 is a sliding connection.Finally, the displacement meter is installed between the first hoop 101 and the second hoop 102, and the hydraulic press on the frame 200 is started to press the concrete test block.

[0027] The connection effect of the first hoop 101 and the second hoop 102 is achieved by setting up a frame such as a threaded rod 103 and a telescopic rod 110. Compared with the existing method of installing the first hoop 101 and the second hoop 102 separately, the integral installation is more convenient and can reduce the installation steps. In addition, the distance between the first hoop 101 and the second hoop 102 can be accurately adjusted by the threaded rod 103.

[0028] Second embodiment:

[0029] like Figure 1 , Figure 4 As shown, the positioning rod 105 is connected to the first hoop 101 and the second hoop 102 in a sliding manner. A handle 107 is provided on the side of the positioning rod 105 away from the first hoop 101 and the second hoop 102. A spring 108 is provided on the periphery of the positioning rod 105. The spring 108 is always in a contracted state. When in use, the positioning rod 105 is pulled outward by the handle 107. The spring 108 is lengthened and the elastic force is increased under the drive of the handle 107. Then, the concrete test block is placed between the first hoop 101 and the second hoop 102. The handle 107 is released. The positioning rod 105 moves inward under the thrust of the spring 108 and contacts the concrete test block to generate pressure so that the detection mechanism 100 is installed on the concrete test block.

[0030] The spring 108 is provided to achieve the effect of pushing the positioning rod 105 to move. Compared with the bolt-type positioning rod 105, the clamping speed is faster by applying pressure to the positioning rod 105 through the spring 108, and thus it is easier to operate.

[0031] Third embodiment:

[0032] like Figure 4 As shown, the end of the positioning rod 105 close to the first hoop 101 and the second hoop 102 is a pointed end, which is more conducive to the positioning rod 105 to penetrate a small part of the concrete test block, thereby ensuring the stability of the connection between the detection mechanism 100 and the concrete test block.

[0033] Fourth embodiment:

[0034] like Figure 2 As shown, a limiting ring 109 is further provided on the outer wall of the positioning rod 105 , and the limiting ring 109 can prevent the positioning rod 105 from moving too far, thereby causing the positioning rod 105 to be pulled out of the first hoop 101 or the second hoop 102 and causing injuries to workers.

[0035] Fifth embodiment:

[0036] like Figure 5 As shown, the telescopic rod 110 is composed of two relatively slidable rods. The upper part of the sliding rod at the upper end is connected to the second hoop 102, and the lower part of the sliding rod at the lower end is connected to the first hoop 101. A scale is provided on the surface of the telescopic rod 110. When the telescopic rod 110 slides relatively, the distance from the first hoop 101 and the second hoop 102 can be read from the scale on its surface, thereby facilitating reading and use by the staff.

[0037] Sixth embodiment:

[0038] The telescopic rod 110 is made of transparent material, and an elastic rope is arranged inside the telescopic rod 110. A mark is made in the middle of the elastic rope. The lower end of the elastic rope is aligned with the upper end of the first hoop 101, and the upper end of the elastic rope is aligned with the lower end of the second hoop 102. When the distance between the first hoop 101 and the second hoop 102 changes, the elastic rope is lengthened or shortened. Since the elastic rope is elastically deformable, the mark in the middle of the elastic rope is always at the midpoint of the first hoop 101 and the second hoop 102. After the midpoint of the elastic rope mark corresponds to the midpoint of the concrete test block, the distances from the second hoop 102 and the first hoop 101 to the upper and lower support platforms are the same.

[0039] The elastic rope is provided to facilitate the workers to align the middle position of the concrete test block, that is, the installation position of the detection mechanism 100 on the concrete test block can be determined without using a ruler to measure.

[0040] When in use, the concrete test block is first placed on the platform, and then the device is put on the concrete test block from top to bottom, and the knob 104 is rotated to adjust the distance between the first hoop 101 and the second hoop 102 to a preset value. Finally, the positioning rod 105 is used to fix the detection mechanism 100 on the concrete test block. After the nut on the threaded sleeve 106 is loosened, the connection relationship between the threaded sleeve 106 and the second hoop 102 is a sliding connection. Finally, the displacement meter is installed between the first hoop 101 and the second hoop 102, and the hydraulic press on the frame 200 is started to apply pressure to the concrete test block.

[0041] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A device for testing the structural relationship of aeolian sand concrete specimen, characterized in that: include: A detection mechanism (100) and a frame (200), wherein the detection mechanism (100) is mounted on the frame (200), and the detection mechanism (100) comprises a first hoop (101) and a second hoop (102), a threaded rod (103) is threadedly mounted between the first hoop (101) and the second hoop (102), a knob (104) is mounted at the lower end of the threaded rod (103), a threaded sleeve (106) is movably mounted at the upper end of the threaded rod (103), and the threaded sleeve (106) is slidably mounted on the second hoop (102), a plurality of positioning rods (105) are arranged on the outer walls of the first hoop (101) and the second hoop (102), and the first hoop (101) and the second hoop (102) brackets are also provided with telescopic rods (110).

2. The device for testing the structural relationship of aeolian sand concrete specimens according to claim 1, characterized in that: The positioning rod (105) is connected to the first hoop (101) and the second hoop (102) in a sliding manner. A handle (107) is provided on the side of the positioning rod (105) away from the first hoop (101) and the second hoop (102). A spring (108) is provided on the periphery of the positioning rod (105).

3. The device for testing the structural relationship of aeolian sand concrete specimens according to claim 2, characterized in that: The positioning rod (105) has a pointed end close to the first hoop (101) and the second hoop (102).

4. The device for testing the structural relationship of aeolian sand concrete specimens according to claim 3, characterized in that: The outer wall of the positioning rod (105) is also provided with a limiting ring (109).

5. The device for testing the structural relationship of aeolian sand concrete specimens according to claim 1, characterized in that: The telescopic rod (110) is composed of two rods that can slide relative to each other, and a scale is provided on the surface of the telescopic rod (110).

6. The device for testing the structural relationship of aeolian sand concrete specimens according to claim 5, characterized in that: The telescopic rod (110) is made of a transparent material. An elastic rope is arranged inside the telescopic rod (110). The lower end of the elastic rope is aligned with the upper end of the first hoop (101), and the upper end of the elastic rope is aligned with the lower end of the second hoop (102).

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