Concrete core sample test piece detection equipment

Abstract

The utility model relates to the field of concrete detection, and discloses concrete core sample test piece detection equipment which is characterized in that four guide columns which are distributed in a rectangular shape are arranged above a machine table, a top plate is arranged at the top ends of the guide columns, a gas-liquid pressure cylinder is arranged above the top plate, a push rod of the gas-liquid pressure cylinder penetrates through the top plate and is arranged below the top plate, and the top plate is arranged below the top plate. A gas-liquid pressure cylinder is installed on the machine table, a pressing head is installed at the bottom end of a push rod of the gas-liquid pressure cylinder, a containing base is installed above the machine table, two positioning plates are symmetrically arranged on the left side and the right side of the containing base, the positioning plates are arranged above the containing base in a left-right sliding mode, and a protective cover is further arranged in the center of the upper portion of the containing base. The two positioning plates which are synchronously and symmetrically arranged are arranged above the placing table, and are matched with the abutting arc surfaces of the inner walls of the positioning plates and the positioning screw rods, so that a core sample test piece can be quickly positioned under the pressure head, and the detection accuracy is improved during compression resistance detection.

Description

Technical Field

[0001] The utility model relates to the field of concrete detection, in particular to a concrete core sample test piece detection device. Background Art

[0002] In order to ensure the compressive strength of concrete, it is necessary to take core samples of the formed concrete for compression testing. When testing concrete core specimens, the specimens are usually placed on the workbench of the compression testing machine and the pressure test is performed on the specimens through the pressure head. When performing the compression test, in order to avoid eccentric compression of the core specimens and affect the accuracy of the test results, it is usually necessary to place the core sample in the center below the pressure head, that is, to make the core sample and the pressure head of the compression testing machine on the same central axis. Manual alignment is not only inefficient, but also inaccurate, affecting the test results. To this end, we designed a concrete core specimen testing device. Utility Model Content

[0003] In order to solve the technical problem of quickly placing a core sample specimen under a pressure head of a compression testing machine, the utility model provides a concrete core sample specimen detection device.

[0004] The utility model is implemented by the following technical scheme: a concrete core sample test piece detection device, comprising a machine platform, four rectangularly distributed guide columns are arranged above the machine platform, a top plate is installed on the top of the guide column, a gas-liquid booster cylinder is installed above the top plate, a push rod of the gas-liquid booster cylinder passes through the top plate and is placed below it, and a pressure head is installed at the bottom end of the push rod of the gas-liquid booster cylinder;

[0005] A placement seat is installed above the machine platform, and two positioning plates are symmetrically arranged on the left and right sides of the placement seat. The positioning plates are slid left and right and placed above the placement seat. A protective cover is also arranged at the center above the placement seat.

[0006] As a further improvement of the above scheme, a moving hole is provided inside the placement seat, and two symmetrically distributed moving bar holes are provided above the placement seat, and the moving bar holes are connected to the moving hole. A positioning screw is rotatably installed in the moving hole through a bearing, and two nut seats are symmetrically provided on the left and right ends of the positioning screw, and a moving plate is installed on the nut seat. The upper end of the moving plate passes through the moving bar hole and is placed above the placement seat. The moving plate has a T-shaped structure, and a slot is provided above the nut seat. The lower part of the moving plate is inserted into the nut seat, so that the moving plate can be quickly installed and disassembled, and the bottom end of the moving hole passes through the lower end surface of the placement seat, so that the moving hole is connected with the outside, which is convenient for cleaning impurities inside it.

[0007] As a further improvement of the above scheme, the positioning screw rod is composed of two screw rods welded together, and the threads on the two screw rods are rotated in opposite directions. By rotating the part of the positioning screw rod outside the placement seat, the left and right nut seats can be moved inward or outward at the same time, thereby causing the two positioning plates to move synchronously, which can ensure that the test piece between the two positioning plates is directly below the pressure head;

[0008] A corrugated plate is connected to the inner side of the movable plate, and the other end of the corrugated plate is connected to the inner end of the movable bar hole. The corrugated plate is formed by the cut part of the corrugated tube, which can block the movable bar hole and prevent part of the specimen debris from entering the movable bar hole, and will not interfere with the normal movement of the positioning plate.

[0009] As a further improvement of the above scheme, the inward side of the positioning plate is designed with an arc-shaped structure to form an abutting arc surface, and the axes of the two abutting arc surfaces are coplanar with the axis of the pressure head. The concrete specimen is sampled by a core drilling machine, and its structure is usually a cylindrical structure. The design of the abutting arc surface can effectively press the outer ring surface of the specimen, and can ensure that the specimen is in the center of the abutting arc surface, so that it can be quickly positioned. The abutting arc surface and the two edges of the inward side of the positioning plate are chamfered to form a contact arc surface, which will contact the contact arc surface when positioning a larger specimen, thereby avoiding damage to the specimen.

[0010] As a further improvement of the above scheme, a plug-in ring groove is provided on the upper end surface of the placement seat, and a discharge groove is provided on the front side of the upper end surface of the placement seat. The discharge groove is connected to the plug-in ring groove, and the depths of the two are consistent. The upper surface of the corrugated plate is not higher than the bottom end of the discharge groove. The plug-in ring groove is used to quickly fix the protective cover, and the debris generated by the specimen placed in the plug-in ring groove can be quickly cleaned through the discharge groove.

[0011] As a further improvement of the above scheme, the protective cover is clamped in the plug-in ring groove, and the axis of the protective cover is colinear with the axis of the pressure head. The inner diameter of the protective cover is larger than the outer diameter of the pressure head. The protective cover is made of a transparent material. The pressure head can extend into the protective cover and perform pressure testing on the test piece below. The generated debris is blocked by the protective cover and will not spread around.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can quickly place the core sample directly under the pressure head by arranging two synchronous and symmetrical positioning plates above the placement table, and cooperating with the abutting arc surface of the inner wall and the positioning screw rod, thereby improving the detection accuracy when performing compression testing;

[0014] 2. A protective cover is provided above the placement seat, the core sample is placed in the protective cover, and the pressure head can be extended into the protective cover to perform a compression test on the core sample. When the core sample is broken, the debris generated by the shattering of the core sample will be blocked by the protective cover and will not spread around, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of a concrete core sample testing device provided by the utility model;

[0016] Figure 2 for Figure 1 Front view of the diagram;

[0017] Figure 3 for Figure 1 A schematic diagram of a structure in which no protective cover is provided;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure of the middle placement table;

[0019] Figure 5 for Figure 4 sectional view of .

[0020] Description of main symbols:

[0021] 1. Machine table; 2. Placement seat; 21. Plug-in ring groove; 22. Discharge groove; 23. Moving strip hole; 24. Moving hole; 3. Positioning screw; 31. Moving plate; 32. Corrugated plate; 33. Nut seat; 4. Guide column; 5. Top plate; 6. Gas-liquid booster cylinder; 7. Pressure head; 8. Protective cover; 9. Positioning plate; 91. Abutting arc surface; 92. Contact arc surface. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] Example:

[0024] Please combine Figure 1-Figure 5 A concrete core sample testing device of this embodiment includes a machine platform 1, four rectangularly distributed guide columns 4 are arranged above the machine platform 1, a top plate 5 is installed on the top of the guide column 4, a gas-liquid booster cylinder 6 is installed above the top plate 5, a push rod of the gas-liquid booster cylinder 6 passes through the top plate 5 and is placed below it, and a pressure head 7 is installed at the bottom end of the push rod of the gas-liquid booster cylinder 6;

[0025] A placement seat 2 is installed above the machine 1 , and two positioning plates 9 are symmetrically arranged on the left and right sides of the placement seat 2 , and the positioning plates 9 are slidably placed above the placement seat 2 , and a protective cover 8 is also arranged at the center above the placement seat 2 .

[0026] A moving hole 24 is provided inside the placement seat 2, and two symmetrically distributed moving bar holes 23 are provided above the placement seat 2, and the moving bar holes 23 are connected to the moving hole 24. A positioning screw rod 3 is rotatably installed in the moving hole 24 through a bearing, and two nut seats 33 are symmetrically provided at the left and right ends of the positioning screw rod 3. A moving plate 31 is installed on the nut seat 33, and the upper end of the moving plate 31 passes through the moving bar hole 23 and is placed above the placement seat 2. The moving plate 31 is in a T-shaped structure, and a slot is provided above the nut seat 33. The lower part of the moving plate 31 is inserted into the nut seat 33, so that the moving plate 31 can be quickly installed and disassembled, and the bottom end of the moving hole 24 passes through the lower end surface of the placement seat 2, so that the moving hole 24 is connected with the outside, which is convenient for cleaning impurities inside it.

[0027] The positioning screw 3 is composed of two screws welded together, and the threads on the two screws are rotated in opposite directions. By rotating the part of the positioning screw 3 outside the placement seat 2, the left and right nut seats 33 can be moved inward or outward at the same time, thereby making the two positioning plates 9 move synchronously, which can ensure that the test piece between the two positioning plates 9 is directly below the pressure head 7;

[0028] A corrugated plate 32 is connected to the inner side of the movable plate 31, and the other end of the corrugated plate 32 is connected to the inner end of the movable bar hole 23. The corrugated plate 32 is formed by the cut portion of the corrugated tube, which can block the movable bar hole 23, thereby preventing part of the specimen debris from entering the movable bar hole 23, and will not interfere with the normal movement of the positioning plate 9.

[0029] The inner side of the positioning plate 9 is designed with an arc-shaped structure to form an abutting arc surface 91. The axes of the two abutting arc surfaces 91 are coplanar with the axis of the pressure head 7. The concrete specimen is sampled by a core drilling machine, and its structure is usually a cylindrical structure. The design of the abutting arc surface 91 can effectively press the outer ring surface of the specimen, and can ensure that the specimen is in the center of the abutting arc surface 91, so that it can be quickly positioned. The abutting arc surface 91 and the two edges of the inner side of the positioning plate 9 are chamfered to form a contact arc surface 92. When positioning a larger specimen, it will contact the contact arc surface 92 to avoid damage to the specimen.

[0030] A plug-in ring groove 21 is provided on the upper end surface of the placement seat 2, and a discharge groove 22 is provided on the front side of the upper end surface of the placement seat 2. The discharge groove 22 is connected to the plug-in ring groove 21, and the depths of the two are the same. The upper surface of the corrugated plate 32 is not higher than the bottom end of the discharge groove 22. The plug-in ring groove 21 is used to quickly fix the protective cover 8, and the debris generated by the test piece placed in the plug-in ring groove 21 can be quickly cleaned through the discharge groove 22.

[0031] The protective cover 8 is clamped in the plug-in ring groove 21, and the axis of the protective cover 8 is colinear with the axis of the pressure head 7. The inner diameter of the protective cover 8 is larger than the outer diameter of the pressure head 7. The protective cover 8 is made of a transparent material. The pressure head 7 can extend into the protective cover 8 and perform pressure testing on the test piece below. The generated debris is blocked by the protective cover 8 and will not spread around.

[0032] The implementation principle of a concrete core sample test piece detection device in the embodiment of the present application is as follows: in actual use, first rotate the positioning screw 3 clockwise. Since the positioning screw 3 includes two screws with opposite thread rotation directions, rotating the positioning screw 3 clockwise can make the left and right nut seats 33 move inward at the same time, thereby making the two positioning plates 9 move inward synchronously. When the distance between the inward sides of the two positioning plates 9 is slightly larger than the outer diameter of the core sample, the core sample is placed between the two abutting arc surfaces 91, and continue to rotate the positioning screw clockwise to make the positioning plate 9 continue to move inward until the positioning plate 9 contacts the outer ring surface of the core sample. Since the core sample is a cylindrical structure The structure can ensure that the specimen is at the center of the abutting arc surface 91. At this time, the axis of the core sample specimen is in line with the axis of the pressure head 7. Then, the positioning screw 3 is rotated counterclockwise to make the positioning plate 9 away from the core sample specimen. The positioning plate 9 is outside the pressure head 7. Then, the protective sleeve is connected to the plug-in ring groove 21. The gas-liquid booster cylinder 6 makes the pressure head 7 move downward and contact the core sample specimen, so as to perform a pressure test on it. After reaching the critical value, the core sample specimen will crack. If the pressure is continued or the core sample specimen does not meet the test standard, the core sample specimen will explode due to the rapid release of stress. The core sample specimen slag will be blocked by the protective cover 8 to prevent it from spreading to the surroundings.

[0033] By arranging two synchronously and symmetrically arranged positioning plates 9 above the placement table, in conjunction with the abutting arc surface 91 of the inner wall thereof and the positioning screw rod 3, the core sample specimen can be quickly placed directly below the pressure head 7, thereby improving the detection accuracy during the compression test;

[0034] By arranging a protective cover 8 above the placement seat 2, the core sample is placed in the protective cover 8, and the pressure head 7 can extend into the protective cover 8 to perform a compression test on the core sample. When the core sample is broken, the debris generated by the fragmentation will be blocked by the protective cover 8 and will not spread around, thereby improving safety.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A concrete core sample testing device, comprising a machine platform (1), characterized in that: Four guide columns (4) distributed in a rectangular shape are arranged above the machine platform (1), a top plate (5) is installed on the top of the guide column (4), a gas-liquid booster cylinder (6) is installed above the top plate (5), a push rod of the gas-liquid booster cylinder (6) passes through the top plate (5) and is placed below it, and a pressure head (7) is installed at the bottom end of the push rod of the gas-liquid booster cylinder (6); A placement seat (2) is installed above the machine platform (1), and two positioning plates (9) are symmetrically arranged on the left and right sides of the placement seat (2). The positioning plates (9) are slidably arranged on the top of the placement seat (2), and a protective cover (8) is also arranged at the center above the placement seat (2).

2. A concrete core sample testing device as claimed in claim 1, characterized in that: A moving hole (24) is provided inside the placement seat (2), two symmetrically distributed moving bar holes (23) are provided above the placement seat (2), and the moving bar holes (23) are connected to the moving hole (24), a positioning screw rod (3) is rotatably installed in the moving hole (24) via a bearing, two nut seats (33) are symmetrically provided at the left and right ends of the positioning screw rod (3), a moving plate (31) is installed on the nut seat (33), and the upper end of the moving plate (31) passes through the moving bar hole (23) and is placed above the placement seat (2).

3. A concrete core sample testing device as claimed in claim 2, characterized in that: The positioning screw rod (3) comprises two screw rods welded together, and the threads on the two screw rods have opposite rotation directions; The inner side of the movable plate (31) is connected to a corrugated plate (32), and the other end of the corrugated plate (32) is connected to the inner end of the movable bar hole (23).

4. A concrete core sample testing device as claimed in claim 1, characterized in that: The inner side of the positioning plate (9) is designed with an arc-shaped structure to form an abutting arc surface (91), the axes of the two abutting arc surfaces (91) are coplanar with the axis of the pressure head (7), and the abutting arc surface (91) and the two edges of the inner side of the positioning plate (9) are chamfered to form a contact arc surface (92).

5. A concrete core sample testing device as claimed in claim 3, characterized in that: The upper surface of the placement seat (2) is provided with a plug-in ring groove (21), and the front side of the upper surface of the placement seat (2) is provided with a discharge groove (22). The discharge groove (22) is connected to the plug-in ring groove (21), and the depths of the two are the same. The upper surface of the corrugated plate (32) is not higher than the bottom of the discharge groove (22).

6. A concrete core sample testing device as claimed in claim 5, characterized in that: The protective cover (8) is clamped in the plug-in ring groove (21), and the axis of the protective cover (8) is colinear with the axis of the pressure head (7), and the inner diameter of the protective cover (8) is greater than the outer diameter of the pressure head (7).

Images