A freeze-thaw cycle test device for Z-shaped hollow concrete blocks used in concrete processing

Abstract

The present invention relates to the technical field of concrete freeze-thaw cycle test device, specifically a Z-shaped concrete hollow block freeze-thaw cycle test device for concrete processing, comprising a load, a concrete sample, a screw and a sensor; the concrete sample is placed in a test box, the top of the test box is covered with a cover, the bottom inner wall of the test box is provided with a cooling device, a support base is provided above the cooling device, a card slot is processed on the left and right inner walls of the test box, a card tooth is carded in the card slot, and the card tooth is also fixedly connected with one end of a cable, the other end of the cable is placed in a cable slot, the cable slot is opened on the sliding seat, the other end of the cable is carded on the steering wheel and extends a gap, and the gap is opened on the rear side wall of the test box. The present invention has a simple structural principle and low cost, can realize rapid temperature change during the concrete freeze-thaw cycle test, effectively ensures the test accuracy, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of concrete freeze-thaw cycle test devices, in particular to a Z-shaped concrete hollow block freeze-thaw cycle test device used for concrete processing. Background Art

[0002] Freeze-thaw damage is the erosion damage from the surface to the inside of concrete that contains water or has been in contact with water for a long time under the alternating positive and negative temperatures. In cold region projects, freeze-thaw cycles will cause the mechanical properties of concrete to deteriorate and destroy its integrity, thus affecting the stability of the overall structure. While concrete is subjected to freeze-thaw cycles, it is itself under load. Therefore, considering the damage under the combined action of freeze-thaw cycles and loads can better reflect the actual problem, but the existing freeze-thaw testing machines rarely consider the role of loads. And so far, there has been no test device that can compress concrete specimens after the coupling of loads and freeze-thaw cycles.

[0003] In the existing concrete freeze-thaw cycle test device, since the entire test device is placed in a freeze-thaw test machine to simulate the change of ambient temperature, the cost of the entire device is relatively high. At the same time, the temperature change process is relatively slow and uneven, which affects the test accuracy to a certain extent. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a freeze-thaw cycle test device for Z-shaped concrete hollow blocks used in concrete processing.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A Z-shaped concrete hollow block freeze-thaw cycle test device for concrete processing, comprising a load, a concrete sample, a screw and a sensor, wherein the concrete sample is arranged below the load, the load is fixed to the concrete sample through the sensor, and the sensor is arranged inside the concrete sample;

[0007] The concrete specimen is placed in a test box, the top of the test box is covered with a lid, a cooling device is provided on the inner wall of the bottom of the test box, a support base is provided above the cooling device, and the left and right ends of the support base are respectively welded and fixed to the left and right inner walls of the test box; a plurality of through holes are provided on the support base to ensure that the cooling device can fully cool the air temperature of the cavity inside the test box and ensure the circulation of the internal air; card grooves are processed on the left and right inner walls of the test box, and card teeth are installed in the card grooves, and the card teeth are slidably installed in the installation grooves left and right, and the installation grooves are provided at the left and right ends of the sliding seat. The upper end surface of the moving seat is fixed to the screw thread and the concrete sample is placed on the upper end surface of the sliding seat; a spring is also arranged inside the mounting groove, one end of the spring is welded and fixed to the clamping tooth, and the other end of the spring is welded and fixed to the inner wall of the mounting groove; the clamping tooth is also fixedly connected to one end of the cable, the other end of the cable is placed in the cable groove, the cable groove is provided on the sliding seat, the other end of the cable is clamped on the steering wheel and extends out of a gap, the gap is provided on the rear side wall of the test box, the steering wheel is welded and fixed on the wheel axle, and the wheel axle is rotatably installed in the cable groove.

[0008] As a further solution of the present invention: a handle is fixed by bolts on the upper end surface of the cover, and a rubber sleeve is covered on the handle to achieve the technical effect of anti-slip and heat insulation.

[0009] As a further solution of the present invention: a protective gasket is bonded to the upper end surface of the support base, and the protective gasket is made of silicone material, which has the technical effects of anti-wear and buffering.

[0010] As a further solution of the present invention: the pull cable is a steel cable or a nylon cable, which is used to pull the latch into the installation groove to facilitate the downward movement of the sliding seat in the test box.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The cooling device is used to cool the interior of the test box as a whole. Since the cooling device is located at the bottom of the cavity inside the test box, the temperature inside the test box is continuously reduced from top to bottom. When a concrete freeze-thaw cycle test is required, the sliding seat and the sample, load and sensor above it need only be placed in the test box as a whole. In the process of placing the sliding seat downward into the test box, since the latch teeth and the slots are mutually limited, it is only necessary to tighten the cable to shrink the latch teeth back into the installation slot, so that the sliding seat can slide downward in the test box. The different positions of the sliding seat represent different temperatures. The latch teeth and the slots are mutually limited to ensure that the sliding seat can stay in various temperature positions in the test box. In the process of the sliding seat moving upward in the test box, since the latch teeth and the slots are not mutually limited, the convenience of temperature regulation is guaranteed, and the technical effect of rapid temperature change during the experiment is achieved. The present invention has a simple structural principle and low cost, can achieve rapid temperature change during the concrete freeze-thaw cycle test, effectively guarantees the test accuracy, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 for Figure 1 Enlarged view of part A.

[0015] Figure 3 for Figure 1 Enlarged view of part B.

[0016] In the figure: 1-load, 2-concrete specimen, 3-screw, 4-sensor, 5-test box, 6-cover, 7-handle, 8-support base, 9-cooling device, 10-through hole, 11-protection gasket, 12-slot, 13-sliding seat, 14-mounting slot, 15-tooth, 16-spring, 17-cable, 18-cable slot, 19-steering wheel, 20-axle, 21-gap. DETAILED DESCRIPTION

[0017] Example 1

[0018] See also Figure 1-Figure 3A freeze-thaw cycle test device for Z-shaped concrete hollow blocks used for concrete processing, comprising a load 1, a concrete sample 2, a screw 3 and a sensor 4, wherein the concrete sample 2 is arranged below the load 1, the load 1 is fixed to the concrete sample 2 through the sensor 4, and the sensor 4 is arranged inside the concrete sample 2; the concrete sample 2 is placed in a test box 5, the top of the test box 5 is covered with a cover 6, a cooling device 9 is arranged on the inner wall of the bottom of the test box 5, a support base 8 is arranged above the cooling device 9, and the left and right ends of the support base 8 are respectively welded and fixed to the left and right inner walls of the test box 5; a plurality of through holes 10 are opened on the support base 8, which are used to ensure that the cooling device 9 can fully cool the air temperature of the internal cavity of the test box 5 to ensure the circulation of the internal air; the left and right inner walls of the test box 5 are processed with card slots 12, and the card slots 12 are carded with card teeth 15, the latch tooth 15 is slidably installed in the installation groove 14, the installation groove 14 is opened at the left and right ends of the sliding seat 13, the upper end surface of the sliding seat 13 is threadedly fixed to the screw rod 3 and the concrete sample 2 is placed on the upper end surface of the sliding seat 13; a spring 16 is also arranged inside the installation groove 14, one end of the spring 16 is welded and fixed to the latch tooth 15, and the other end of the spring 16 is welded and fixed to the inner wall of the installation groove 14; the latch tooth 15 is also fixedly connected to one end of a cable 17, the other end of the cable 17 is placed in a cable groove 18, the cable groove 18 is opened on the sliding seat 13, the other end of the cable 17 is clamped on the steering wheel 19 and extends a gap 21, the gap 21 is opened on the rear side wall of the test box 5, the steering wheel 19 is welded and fixed to the axle 20, and the axle 20 is rotatably installed in the cable groove 18.

[0019] Example 2

[0020] See also Figure 1-Figure 3 In this embodiment, based on the embodiment 1, a handle 7 is bolted to the upper end surface of the cover 6, and a rubber sleeve is covered on the handle 7 to achieve the technical effect of anti-slip and heat insulation; a protective gasket 11 is bonded to the upper end surface of the support base 8, and the protective gasket 11 is made of silicone material, which achieves the technical effect of anti-wear and buffering; the cable 17 is a steel cable or a nylon cable, which is used to pull the tooth 15 into the installation groove 14 to facilitate the downward movement of the sliding seat 13 in the test box 5.

[0021] The working principle of the present invention is: the temperature of the interior of the test box 5 is reduced as a whole by the cooling device 9. Since the cooling device 9 is located at the bottom of the cavity inside the test box 5, the temperature inside the test box 5 is continuously reduced from top to bottom. When it is necessary to conduct a freeze-thaw cycle test on concrete, it is only necessary to put the sliding seat 13 and the sample, load and sensor above it into the test box 5 as a whole. In the process of the sliding seat 13 being placed downward into the test box 5, since the latch 15 and the latch groove 12 limit each other, it is only necessary to tighten the cable 17 at this time to shrink the latch 15 back into the installation groove 14, so that the sliding seat 13 can slide downward in the test box 5. The different positions of the sliding seat 13 represent different temperatures. The latch 15 and the latch groove 12 limit each other to ensure that the sliding seat 13 can stay in various temperature positions in the test box 5. In the process of the sliding seat 13 moving upward in the test box 5, the latch 15 and the latch groove 12 will not limit each other, thereby ensuring the convenience of temperature regulation and achieving the technical effect of rapid temperature change during the experiment. The invention has simple structural principle and low cost, can realize rapid temperature change during concrete freeze-thaw cycle test, effectively ensures test accuracy and has strong practicality.

[0022] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A freeze-thaw cycle test device for a Z-shaped concrete hollow block used in concrete processing, comprising a load (1), a concrete sample (2), a screw (3) and a sensor (4), wherein the concrete sample (2) is arranged below the load (1), the load (1) is fixed to the concrete sample (2) via the sensor (4), and the sensor (4) is arranged inside the concrete sample (2), characterized in that: The concrete sample (2) is placed in a test box (5), the top of the test box (5) is covered with a cover (6), the bottom inner wall of the test box (5) is provided with a cooling device (9), the upper part of the cooling device (9) is provided with a support base (8), the left and right ends of the support base (8) are respectively welded and fixed to the left and right inner walls of the test box (5); a plurality of through holes (10) are provided on the support base (8); the left and right inner walls of the test box (5) are processed with a card slot (12), the card slot (12) is provided with a card tooth (15), the card tooth (15) is slidably installed in the installation slot (14), the installation slot (14) is provided at the left and right ends of the sliding seat (13), the upper end surface of the sliding seat (13) is threadedly fixed to the screw rod (3) and the upper end of the sliding seat (13) is provided with a card slot (12). The concrete sample (2) is placed on the surface; a spring (16) is also arranged inside the installation groove (14); one end of the spring (16) is welded and fixed to the clamping tooth (15), and the other end of the spring (16) is welded and fixed to the inner wall of the installation groove (14); the clamping tooth (15) is also fixedly connected to one end of a cable (17), and the other end of the cable (17) is placed in a cable groove (18), and the cable groove (18) is provided on the sliding seat (13); the other end of the cable (17) is clamped on the steering wheel (19) and extends out of a gap (21), and the gap (21) is provided on the rear side wall of the test box (5); the steering wheel (19) is welded and fixed to the wheel shaft (20), and the wheel shaft (20) is rotatably installed in the cable groove (18).

2. A freeze-thaw cycle test device for Z-shaped hollow concrete blocks for concrete processing according to claim 1, characterized in that: A handle (7) is bolted to the upper end surface of the cover (6).

3. A freeze-thaw cycle test device for Z-shaped hollow concrete blocks for concrete processing according to claim 2, characterized in that: The handle (7) is covered with a rubber sleeve.

4. A freeze-thaw cycle test device for Z-shaped hollow concrete blocks for concrete processing according to claim 1, characterized in that: A protective gasket (11) is bonded to the upper end surface of the support base (8).

5. A freeze-thaw cycle test device for Z-shaped hollow concrete blocks for concrete processing according to claim 4, characterized in that: The protective gasket (11) is made of silica gel.

6. A freeze-thaw cycle test device for Z-shaped hollow concrete blocks for concrete processing according to any one of claims 1 to 5, characterized in that: The pull cable (17) is a steel cable or a nylon cable.

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