Anti-crack micro-expansion concrete testing device

Abstract

The utility model provides an anti-crack micro-expansion concrete testing device, which relates to the technical field of concrete testing and comprises a device body. The device body is provided with a test mold box, handles in the front-back direction are arranged at the tops of the left side wall and the right side wall of the test mold box, a threaded hole penetrating up and down is formed in the center of the bottom wall of the test mold box, a clearing push-out rod in the up-down direction is installed in the threaded hole of the test mold box, and threads are formed in the outer circumference of the clearing push-out rod. A fixed column is arranged on the top end surface of the clearing push-out rod, so that the clearing push-out rod can be conveniently mounted on the test mold box through threads to bear the clearing push-out plate, and the clearing push-out rod can conveniently drive the clearing push-out plate to push out concrete in the test mold box through thread engagement; the problems that solidified concrete in the concrete mold is difficult to remove, and pushing measures are inconvenient to add on the concrete mold to push out and remove the concrete in the mold are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete testing, and particularly relates to a testing device for crack - resistant micro - expansive concrete. Background Technique

[0002] Crack - resistant micro - expansive concrete is a kind of concrete obtained by adding specific expansive agents on the basis of ordinary concrete, aiming to offset shrinkage through the expansion effect and reduce the generation of cracks. This kind of concrete can expand slightly during the hardening process, effectively offsetting the shrinkage phenomenon caused by temperature changes or water loss, thereby preventing the formation of cracks. When using crack - resistant micro - expansive concrete, a testing device is needed to detect the expansion value.

[0003] Based on the above, the inventor found that the existing testing devices for crack - resistant micro - expansive concrete have the following deficiencies:

[0004] 1. After the device finishes testing the concrete, it is difficult to remove the solidified concrete inside the concrete mold. It is not convenient to install a pushing measure on the concrete mold to push out the concrete inside the mold for cleaning.

[0005] 2. The lifting structure of the device is in the form of a door frame, resulting in a more cumbersome and time - consuming lifting operation process of the device. It is not convenient to install a lifting measure on the device to make the lifting operation process of the device simpler and faster. Content of the Utility Model

[0006] In order to solve the above - mentioned technical problems, the utility model provides a testing device for crack - resistant micro - expansive concrete, aiming to solve the problems that after the existing device finishes testing the concrete, it is difficult to remove the solidified concrete inside the concrete mold, and it is not convenient to install a pushing measure on the concrete mold to push out the concrete inside the mold for cleaning; the lifting structure of the device is in the form of a door frame, resulting in a more cumbersome and time - consuming lifting operation process of the device, and it is not convenient to install a lifting measure on the device to make the lifting operation process of the device simpler and faster.

[0007] The purpose and effect of the testing device for crack - resistant micro - expansive concrete of the utility model are achieved by the following specific technical means:

[0008] A test device for crack - resistant slightly expanding concrete, comprising a device body; the device body is provided with a test mold box, and handles in the front - to - rear direction are arranged at the tops of the left and right side walls of the test mold box. A threaded hole penetrating up and down is opened at the center of the bottom wall of the test mold box. A cleaning and pushing rod in the up - and - down direction is installed inside the threaded hole of the test mold box. Threads are provided on the outer circumference of the cleaning and pushing rod. A fixing column is arranged on the top end face of the cleaning and pushing rod. A regular hexagon groove is opened on the bottom end face of the cleaning and pushing rod. A cleaning and pushing plate is installed on the fixing column of the cleaning and pushing rod through a bearing. A bearing circular groove is opened at the center of the bottom end face of the cleaning and pushing plate. An expansion transfer plate is placed inside the test mold box, and a hemispherical groove is opened at the center of the top end face of the expansion transfer plate.

[0009] Further, a test dial gauge in the up - and - down direction is inserted into the top inside the insertion hole of the lifting and bearing plate. A fixing and locking button in the front - to - rear direction is installed inside the locking screw hole of the lifting and bearing plate. A threaded column is arranged behind the fixing and locking button. A rotating column with an anti - slip groove is arranged on the front end face of the threaded column of the fixing and locking button.

[0010] Further, an anti - detachment and anti - rotation column in the front - to - rear direction is installed inside the anti - rotation screw hole of the lifting and bearing plate. A threaded column is arranged in front of the anti - detachment and anti - rotation column. A limiting ring plate is arranged on the outer circumference of the rear end of the threaded column of the anti - detachment and anti - rotation column. A regular hexagonal prism is arranged on the rear end face of the threaded column of the anti - detachment and anti - rotation column.

[0011] Further, a lifting and bearing plate in the front - to - rear direction is installed on the bearing ring groove of the lifting and adjusting cylinder through a bearing. A bearing circular groove is opened at the rear of the top end face of the lifting and bearing plate. A through - hole penetrating up and down is opened at the center of the bearing circular groove of the lifting and bearing plate. An anti - rotation screw hole penetrating front - to - rear is opened on the rear wall of the through - hole of the lifting and bearing plate. An insertion hole penetrating up and down is opened at the front of the lifting and bearing plate. A locking screw hole penetrating front - to - rear is opened on the front wall of the insertion hole of the lifting and bearing plate.

[0012] Further, a lifting and adjusting cylinder in the up - and - down direction is installed on the outer circumference of the lifting and bearing rod through threads. Threads are provided on the inner circumference of the lifting and adjusting cylinder. Anti - slip grooves are arranged in an annular array on the outer circumference of the lifting and adjusting cylinder. A bearing ring groove is opened on the outer circumference of the bottom of the lifting and adjusting cylinder.

[0013] Further, a lifting and bearing rod in the up - and - down direction is installed inside the threaded hole of the placing and bearing plate. Threads are provided on the outer circumference of the lifting and bearing rod. A threaded column is arranged on the bottom end face of the lifting and bearing rod. A regular hexagon groove is opened on the top end face of the lifting and bearing rod. A strip - shaped groove in the up - and - down direction is opened on the rear of the outer circumference of the lifting and bearing rod.

[0014] Further, a placement and bearing plate in the left - right direction is provided at the bottom of the test mold box. A threaded hole penetrating up and down is opened in the middle at the rear end of the placement and bearing plate. Vertical plates in the front - rear direction are provided at both left and right ends of the top end face of the placement and bearing plate. A strip - shaped hole penetrating left - right and in the front - rear direction is opened in the upper part of the vertical plates of the placement and bearing plate. A bearing plate with a hole penetrating up and down in the center is provided in front of the top between the vertical plates of the placement and bearing plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] It is convenient for the cleaning push - out rod to be installed on the test mold box through threads to bear the cleaning push - out plate, and it is convenient for the cleaning push - out rod to drive the cleaning push - out plate through thread engagement to push out the concrete inside the test mold box, solving the problem that after the device finishes testing the concrete, it is difficult to remove the solidified concrete inside the concrete mold, and it is not convenient to install a pushing - out measure on the concrete mold to push out and remove the concrete inside the mold.

[0017] It is convenient for the lifting adjustment cylinder to be installed on the lifting bearing rod through threads to bear the lifting bearing plate, and it is convenient for the lifting adjustment cylinder to drive the lifting bearing plate to carry the test micrometer through thread engagement for lifting, solving the problem that the lifting structure of the device is in the form of a door frame, resulting in a more cumbersome and time - consuming lifting operation process of the device, and it is not convenient to install a lifting measure on the device to make the lifting operation process of the device simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front - view structural schematic diagram of the utility model.

[0019] Figure 2 is the rear - view structural schematic diagram of the utility model.

[0020] Figure 3 is the sectional - view structural schematic diagram of the utility model.

[0021] Figure 4 is the disassembled - view structural schematic diagram of the utility model.

[0022] Figure 5 is the rising schematic diagram of the lifting bearing plate of the utility model.

[0023] Figure 6 is the inverted sectional - view schematic diagram of the test mold box of the utility model.

[0024] In the figure: 1. Device body; 2. Test mold box; 3. Cleaning push - out rod; 4. Cleaning push - out plate; 5. Expansion transfer plate; 6. Placement and bearing plate; 7. Lifting bearing rod; 8. Lifting adjustment cylinder; 9. Lifting bearing plate; 10. Anti - detachment and anti - rotation column; 11. Test micrometer; 12. Fixed locking button. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following further describes the embodiments of the present invention in detail in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1:

[0027] As shown in the attached Figure 1 to the attached Figure 6 figure:

[0028] The utility model provides a test device for crack - resistant slightly - expanding concrete, including a device body 1; a test mold box 2 is arranged on the device body 1, which is convenient for putting the concrete slurry to be tested into it. On the top of the left and right side walls of the test mold box 2, handles in the front - rear direction are arranged, which is convenient for carrying and moving. A threaded hole penetrating up and down is opened in the center of the bottom wall of the test mold box 2, which is convenient for the cleaning push - out rod 3 to be installed by thread. A vertically - arranged cleaning push - out rod 3 is installed inside the threaded hole of the test mold box 2, which is convenient for the cleaning push - out rod 3 to move through thread engagement. Threads are arranged on the outer circumference of the cleaning push - out rod 3, which is convenient for installation by thread. A fixing column is arranged on the top end face of the cleaning push - out rod 3, which is convenient for the cleaning push - out plate 4 to be installed through a bearing. A regular hexagon groove is opened on the bottom end face of the cleaning push - out rod 3, which is convenient for turning with tools. A cleaning push - out plate 4 is installed on the fixing column of the cleaning push - out rod 3 through a bearing, which is convenient for pushing out and cleaning the concrete inside the test mold box 2. A bearing circular groove is opened in the center of the bottom end face of the cleaning push - out plate 4, which is convenient for the cleaning push - out rod 3 to be installed through a bearing. An expansion transfer plate 5 is placed inside the test mold box 2, which is convenient for transferring the concrete expansion force to the test dial gauge 11. A hemispherical groove is opened in the center of the top end face of the expansion transfer plate 5, which is convenient for the lower end of the test dial gauge 11 to be placed inside. A horizontally - arranged placement and bearing plate 6 is arranged at the bottom of the test mold box 2, which is convenient for bearing each component. A threaded hole penetrating up and down is opened in the middle of the rear end of the placement and bearing plate 6, which is convenient for the lifting and bearing rod 7 to be installed by thread. Vertical plates in the front - rear direction are arranged at both left and right ends of the top end face of the placement and bearing plate 6, which is convenient for bearing force. A strip - shaped hole penetrating left - right and front - rear is opened in the upper part of the vertical plate of the placement and bearing plate 6, which is convenient for the hand to be inserted for carrying. A bearing plate with a hole penetrating up and down in the center is arranged in front of the top between the vertical plates of the placement and bearing plate 6, which is convenient for bearing the test mold box 2 and enabling the cleaning push - out rod 3 to be inserted inside. A vertically - arranged lifting and bearing rod 7 is installed inside the threaded hole of the placement and bearing plate 6, which is convenient for bearing each component. Threads are arranged on the outer circumference of the lifting and bearing rod 7, which is convenient for the lifting and adjusting cylinder 8 to be installed by thread. A threaded column is arranged at the bottom end face of the lifting and bearing rod 7, which is convenient for installation on the placement and bearing plate 6 by thread. A regular hexagon groove is opened on the top end face of the lifting and bearing rod 7, which is convenient for turning and disassembling with tools. A vertically - arranged strip - shaped groove is opened on the rear outer circumference of the lifting and bearing rod 7, which is convenient for the anti - detachment and anti - rotation column 10 to be inserted into the strip - shaped groove to prevent the lifting and bearing plate 9 from rotating.

[0029] Among them, the lifting and bearing rod 7 is installed with a vertically oriented lifting and adjusting cylinder 8 through threads on its outer circumference, facilitating the lifting and adjusting cylinder 8 to lift through thread engagement. The inner circumference of the lifting and adjusting cylinder 8 is provided with threads to facilitate the installation of the lifting and bearing rod 7 through threads. The outer circumference of the lifting and adjusting cylinder 8 is annularly and arrayedly provided with anti-slip grooves to facilitate anti-slip during rotation. The outer circumference of the bottom of the lifting and adjusting cylinder 8 is provided with a bearing ring groove to facilitate the installation of the lifting and bearing plate 9 through a bearing. The lifting and bearing plate 9 in the front-back direction is installed on the bearing ring groove of the lifting and adjusting cylinder 8 through a bearing, facilitating the lifting and adjusting cylinder 8 to rotate and drive the lifting and bearing plate 9 to lift. The rear end face of the top of the lifting and bearing plate 9 is provided with a bearing circular groove to facilitate the installation of the lifting and adjusting cylinder 8 through a bearing. A through hole penetrating up and down is opened at the center of the bearing circular groove of the lifting and bearing plate 9 to facilitate the passage of the lifting and bearing rod 7. A rotation prevention screw hole penetrating front and back is opened on the rear wall of the through hole of the lifting and bearing plate 9 to facilitate the installation of the anti-disengagement and rotation prevention post 10 through threads. An insertion hole penetrating up and down is opened at the front end of the lifting and bearing plate 9 to facilitate the insertion of the test micrometer 11 inside. A locking screw hole penetrating front and back is opened on the front wall of the insertion hole of the lifting and bearing plate 9 to facilitate the installation of the fixing locking knob 12 through threads. The anti-disengagement and rotation prevention post 10 in the rotation prevention screw hole of the lifting and bearing plate 9 is installed in the front-back direction to facilitate the anti-rotation of the lifting and bearing plate 9. A threaded post is provided in front of the anti-disengagement and rotation prevention post 10 to facilitate installation through threads. A limiting ring plate is provided on the outer circumference of the rear end of the threaded post of the anti-disengagement and rotation prevention post 10 to facilitate installation and limitation. A regular hexagonal prism is provided on the rear end face of the threaded post of the anti-disengagement and rotation prevention post 10 to facilitate rotation, disassembly, and assembly with tools. The test micrometer 11 in the up-down direction is inserted into the top inside the insertion hole of the lifting and bearing plate 9 to facilitate obtaining the concrete expansion value. The fixing locking knob 12 in the front-back direction is installed in the locking screw hole of the lifting and bearing plate 9 to facilitate the locking and fixing of the test micrometer 11. A threaded post is provided behind the fixing locking knob 12 to facilitate installation through threads. A rotating post with an anti-slip groove is provided on the front end face of the threaded post of the fixing locking knob 12 to facilitate anti-slip during rotation.

[0030] The specific usage method and function of this embodiment:

[0031] In this utility model, as Figure 1 shown, when the device body 1 is in the usage state, at this time, the test mold box 2 between the pushing plate 4 and the expansion transfer plate 5 is cleared and filled with anti-crack micro-expansion concrete slurry. The state is as Figure 3 shown. During the hardening process of the anti-crack micro-expansion concrete slurry, it can slightly expand. The expansion force pushes the expansion transfer plate 5 to rise, and the expansion transfer plate 5 pushes the lower end of the test micrometer 11, causing the test micrometer 11 to generate a value, thereby realizing the expansion test of the anti-crack micro-expansion concrete; when as Figure 1As shown, after the device body 1 is used up, rotate the lifting adjustment cylinder 8 which is threadedly engaged with the lifting load-bearing rod 7, so that the lifting adjustment cylinder 8 rises through threaded engagement, and the lifting adjustment cylinder 8 drives the lifting load-bearing plate 9 to rise synchronously through the bearing. The test dial indicator 11 is carried by the lifting load-bearing plate 9 and rises synchronously. The state is as Figure 5 shown. Thus, the lifting operation process of the device body 1 is made simpler and faster. Then, lift the test mold box 2 upward to disengage from the top of the placement load-bearing plate 6, invert the test mold box 2 so that the opening of the test mold box 2 faces downward. Rotate the cleaning push rod 3 which is threadedly engaged with the test mold box 2 through a tool, so that the cleaning push rod 3 moves in the direction of the opening of the test mold box 2 through threaded engagement, and the cleaning push rod 3 drives the cleaning push plate 4 to move synchronously through the bearing. The concrete inside the test mold box 2 is pushed out by the cleaning push plate 4. The state is as Figure 6 shown. Thus, it is convenient to push out and clean the concrete inside the test mold box 2.

[0032] Embodiment 2:

[0033] The difference from Embodiment 1 is that the regular hexagonal groove of the lifting load-bearing rod 7 can also be set as a regular heptagonal groove. Thus, the lifting load-bearing rod 7 needs to be rotated by a special tool that cooperates with the regular heptagonal groove, preventing non-staff members from rotating and disassembling the lifting load-bearing rod 7.

[0034] Embodiment 3:

[0035] The difference from Embodiment 1 is that the regular hexagonal prism of the anti-disengagement and anti-rotation column 10 can also be set as a regular heptagonal prism. Thus, the anti-disengagement and anti-rotation column 10 needs to be rotated by a special tool that cooperates with the regular heptagonal prism, preventing non-staff members from rotating and disassembling the anti-disengagement and anti-rotation column 10.

Claims

1. A test device for crack-resistant slightly expanding concrete, characterized in that: It includes a device body (1); a test mold box (2) is provided on the device body (1). On the top of the left and right side walls of the test mold box (2), there are handles in the front-back direction. In the center of the bottom wall of the test mold box (2), there is a threaded hole that penetrates up and down. Inside the threaded hole of the test mold box (2), a cleaning push rod (3) is installed. Threads are provided on the outer circumference of the cleaning push rod (3). A fixing column is provided on the top end face of the cleaning push rod (3). A regular hexagon groove is opened on the bottom end face of the cleaning push rod (3). A cleaning push plate (4) is installed on the fixing column of the cleaning push rod (3) through a bearing. A bearing circular groove is opened in the center of the bottom end face of the cleaning push plate (4). An expansion transfer plate (5) is placed inside the test mold box (2). A hemispherical groove is opened in the center of the top end face of the expansion transfer plate (5).

2. The testing device for anti-crack slightly expanding concrete according to claim 1, characterized in that: A placement bearing plate (6) is provided at the bottom of the test mold box (2). A threaded hole that penetrates up and down is opened in the middle of the rear end of the placement bearing plate (6). On the left and right ends of the top end face of the placement bearing plate (6), there are vertical plates in the front-back direction. A strip hole that penetrates left and right and is in the front-back direction is opened in the upper part of the vertical plates of the placement bearing plate (6). In front of the top between the vertical plates of the placement bearing plate (6), there is a bearing plate with a hole that penetrates up and down in the center.

3. The testing device for anti-crack slightly expanding concrete according to claim 2, characterized in that: A lifting bearing rod (7) is installed inside the threaded hole of the placement bearing plate (6). Threads are provided on the outer circumference of the lifting bearing rod (7). A threaded column is provided on the bottom end face of the lifting bearing rod (7). A regular hexagon groove is opened on the top end face of the lifting bearing rod (7). A strip groove in the up-down direction is opened on the rear outer circumference of the lifting bearing rod (7).

4. The testing device for anti-crack slightly expanding concrete according to claim 3, characterized in that: A lifting adjustment cylinder (8) is installed on the outer circumference of the lifting bearing rod (7) through threads. Threads are provided on the inner circumference of the lifting adjustment cylinder (8). Anti-slip grooves are arranged in an annular array on the outer circumference of the lifting adjustment cylinder (8). A bearing ring groove is opened on the outer circumference of the bottom of the lifting adjustment cylinder (8).

5. The testing device for anti-crack slightly expanding concrete according to claim 4, characterized in that: A lifting bearing plate (9) is installed on the bearing ring groove of the lifting adjustment cylinder (8) through a bearing. A bearing circular groove is opened at the rear end of the top end face of the lifting bearing plate (9). A through hole that penetrates up and down is opened in the center of the bearing circular groove of the lifting bearing plate (9). A non-rotating screw hole that penetrates front and back is opened on the rear wall of the through hole of the lifting bearing plate (9). An insertion hole that penetrates up and down is opened at the front end of the lifting bearing plate (9). A locking screw hole that penetrates front and back is opened on the front wall of the insertion hole of the lifting bearing plate (9).

6. The testing device for anti-crack slightly expanding concrete according to claim 5, characterized in that: An anti-drop non-rotating column (10) is installed inside the non-rotating screw hole of the lifting bearing plate (9). A threaded column is provided in front of the anti-drop non-rotating column (10). A limiting ring plate is arranged on the outer circumference of the rear end of the threaded column of the anti-drop non-rotating column (10). A regular hexagonal prism is provided on the rear end face of the threaded column of the anti-drop non-rotating column (10).

7. The testing device for crack-resistant slightly expanding concrete according to claim 6, wherein: A test micrometer (11) is inserted into the top inside the insertion hole of the lifting bearing plate (9). A fixing locking button (12) is installed inside the locking screw hole of the lifting bearing plate (9). A threaded column is provided behind the fixing locking button (12). A rotating column with anti-slip grooves is provided on the front end face of the threaded column of the fixing locking button (12).

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