Centrifugal concrete strength detection test mold

Abstract

The utility model discloses a centrifugal concrete strength detection test mold, which comprises a main cylinder and a chassis fixed on the inner wall of the main cylinder, the chassis is perpendicular to the central axis of the main cylinder, an upper extension ring is detachably mounted at the top of the main cylinder, and the inner diameter of the upper extension ring is the same as that of the main cylinder. The bottom of the upper extension ring is fixedly connected with a plurality of bolts distributed circumferentially, the top of the main cylinder is provided with mounting holes distributed circumferentially, and the lower ends of the bolts are inserted into the mounting holes. According to the utility model, when the size of the concrete test piece needs to be increased, the plurality of bolts at the bottom of the upper extension ring are respectively inserted into the mounting holes and are pressed downwards, so that the bottom of the upper extension ring is in contact with the top of the main cylinder body, and the upper extension ring is fixedly mounted, so that the upper extension ring is connected with the main cylinder body; at the moment, the size of the concrete test piece is increased, and the application range of the device is widened, so that different size requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, in particular to a centrifugal concrete strength detection test mold. Background Art

[0002] At present, the detection method for the concrete used in prestressed concrete pipe piles is to load the centrifuged and mixed concrete into a concrete triple test mold, compact it by ramming and vibrating, and then cure it with the same process as the pipe pile. The compressive strength value of its standard cylinder represents the prestressed concrete strength value; the concrete test mold is a tool for preparing standard specimens to detect the concrete strength; common test mold types include cube molds and cylinder molds.

[0003] When general test mold tools are used for injecting concrete, the size of the test mold is fixed and cannot be adjusted. If concrete piles of other sizes need to be formed, another special mold needs to be used, and it cannot be flexibly adjusted according to needs. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a centrifugal concrete strength detection test mold, which solves the problems put forward in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: A centrifugal concrete strength detection test mold, including a main cylinder body and a chassis fixed to the inner wall of the main cylinder body. The chassis is perpendicular to the central axis of the main cylinder body. The top of the main cylinder body is detachably installed with an upper extension ring, and the inner diameter of the upper extension ring is the same as that of the main cylinder body. The bottom of the upper extension ring is fixedly connected with a plurality of circumferentially distributed pins, and the top of the main cylinder body is provided with circumferentially distributed mounting holes, and the lower ends of the pins are inserted into the mounting holes.

[0008] Preferably, the number of the pins is four, and the pins are cylindrical pins.

[0009] Preferably, a through hole is opened at the center of the chassis, a push plate is arranged inside the through hole, a support bar is fixedly connected to the bottom of the main cylinder body, a screw rod is threadedly inserted into the support bar, the upper end of the screw rod is rotatably inserted into the bottom wall of the push plate, a push rod is fixedly connected to the lower end of the screw rod, and a guide rod is fixedly connected to the bottom of the push plate, and the lower end of the guide rod movably penetrates through the support bar.

[0010] Preferably, the size of the push plate matches that of the through hole, and the push plate is composed of two discs with different diameters.

[0011] Preferably, a plurality of circumferentially distributed supporting feet are fixedly connected to the bottom of the main cylinder body, and the supporting feet are of a hollow structure.

[0012] Preferably, the guide rod is of a round rod structure.

[0013] (III) Beneficial effects

[0014] The utility model provides a centrifugal concrete strength detection test mold, which has the following beneficial effects:

[0015] 1. In the utility model, when it is necessary to increase the size of the concrete test piece, a plurality of pins at the bottom of the upper extension ring are respectively inserted into the installation holes and pressed downwards, so that the bottom of the upper extension ring contacts the top of the main cylinder body, realizing the fixed installation of the upper extension ring. In this way, the upper extension ring is connected to the main cylinder body. At this time, the size of the concrete test piece is increased, and the application range of the device is improved to meet different size requirements.

[0016] 2. In the utility model, after the concrete test piece is formed, the push rod is rotated to drive the screw rod to rotate, and the screw rod pushes the push plate upwards to realize the purpose of pushing the concrete test piece, so that the concrete test piece is better separated from the inner wall of the main cylinder body. In this way, the concrete test piece can be smoothly separated from the inner wall of the mold, avoiding the adhesion problem that may occur in the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural diagram of the separated state of the upper extension ring and the main cylinder body of a centrifugal concrete strength detection test mold proposed by the utility model;

[0018] Figure 2 is a bottom perspective structural diagram of a centrifugal concrete strength detection test mold proposed by the utility model;

[0019] Figure 3 is a front perspective structural diagram of a centrifugal concrete strength detection test mold proposed by the utility model;

[0020] Figure 4 is Figure 1 the enlarged structural diagram at A of

[0021] Figure 5 is a sectional structural diagram of a centrifugal concrete strength detection test mold proposed by the utility model.

[0022] In the figure: 1, main cylinder body; 2, upper extension ring; 3, chassis; 4, push plate; 5, support bar; 6, screw rod; 7, push rod; 8, guide rod; 9, supporting foot; 10, pin; 101, installation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a centrifugal concrete strength test mold, including a main cylinder 1, a chassis 3 fixed to the inner wall of the main cylinder 1, the chassis 3 is perpendicular to the central axis of the main cylinder 1, and an upper extension ring 2 is detachably installed at the top of the main cylinder 1. The upper extension ring 2 has the same inner diameter as the main cylinder 1. A plurality of circumferentially distributed pins 10 are fixedly connected to the bottom of the upper extension ring 2. Installation holes 101 are provided in a circumferential distribution at the top of the main cylinder 1, and the lower ends of the pins 10 are inserted into the installation holes 101.

[0025] When it is necessary to increase the size of the concrete specimen, insert the plurality of pins 10 at the bottom of the upper extension ring 2 into the installation holes 101 respectively, and press down to make the bottom of the upper extension ring 2 contact the top of the main cylinder 1, so as to realize the fixed installation of the upper extension ring 2. In this way, the upper extension ring 2 is connected to the main cylinder 1. At this time, the size of the concrete specimen is increased, and the application range of the device is improved, so as to meet different size requirements.

[0026] The number of pins 10 is four. The pins 10 are cylindrical pins, and the installation holes 101 are round holes. The diameter of the installation holes 101 should be slightly larger than the diameter of the pins 10 to ensure that the pins 10 can be inserted smoothly, and at the same time avoid excessive looseness or jamming. Distributing the pins 10 equidistantly along the circumference can significantly improve the stability during insertion.

[0027] A through hole is provided at the center of the chassis 3, a push plate 4 is arranged inside the through hole, a support bar 5 is fixedly connected to the bottom of the main cylinder 1, a screw rod 6 is threadedly inserted into the support bar 5, the upper end of the screw rod 6 is rotatably inserted into the bottom wall of the push plate 4, the lower end of the screw rod 6 is fixedly connected to a push rod 7, and a guide rod 8 is fixedly connected to the bottom of the push plate 4. The lower end of the guide rod 8 movably penetrates through the support bar 5. The guide rod 8 is a round rod-shaped structure. The round rod-shaped structure of the guide rod 8 helps to reduce the friction and wear with the support bar 5 and improve the smoothness of movement.

[0028] During demoulding, a special demoulding agent can be applied to the inner wall of the mold, which can reduce the adhesion between the concrete and the mold and make the demoulding process smoother. The demoulding agent is usually an oily, emulsion or powdery chemical substance; when the concrete specimen is formed, rotate the push rod 7 to drive the screw rod 6 to rotate, and the screw rod 6 pushes the push plate 4 upward to achieve the purpose of pushing the concrete specimen, so that the concrete specimen can be better separated from the inner wall of the main cylinder 1. In this way, the concrete specimen can be smoothly separated from the inner wall of the mold, avoiding the adhesion problems that may occur in the traditional method.

[0029] The pushing plate 4 matches the size of the through port. The pushing plate 4 is composed of two discs with different diameters. The two discs are arranged with the same central axis. The pushing plate 4 seals the through port to prevent the leakage of concrete.

[0030] A plurality of circumferentially distributed supporting feet 9 are fixedly connected to the bottom of the main cylinder body 1. The supporting feet 9 are of a hollow structure. This design is usually used to provide stable support while reducing the amount of material used.

[0031] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A centrifugal concrete strength test mold, characterized in that: It includes a main cylinder body (1) and a chassis (3) fixed to the inner wall of the main cylinder body (1). The chassis (3) is arranged perpendicular to the central axis of the main cylinder body (1). An upper extension ring (2) is detachably installed at the top of the main cylinder body (1). The upper extension ring (2) has the same inner diameter as the main cylinder body (1). A plurality of pins (10) distributed circumferentially are fixedly connected to the bottom of the upper extension ring (2). A plurality of mounting holes (101) distributed circumferentially are formed at the top of the main cylinder body (1). The lower ends of the pins (10) are inserted into the interior of the mounting holes (101).

2. The centrifugal concrete strength detection test mold according to claim 1, characterized in that: The number of the pins (10) is four, and the pins (10) are cylindrical pins.

3. A centrifugal concrete strength detection test mold according to claim 1, characterized in that: A through hole is formed at the center of the chassis (3). A push plate (4) is arranged inside the through hole. A support bar (5) is fixedly connected to the bottom of the main cylinder body (1). A screw rod (6) is threadedly inserted into the support bar (5). The upper end of the screw rod (6) is rotatably inserted into the bottom wall of the push plate (4). A push rod (7) is fixedly connected to the lower end of the screw rod (6). A guide rod (8) is fixedly connected to the bottom of the push plate (4). The lower end of the guide rod (8) movably penetrates through the support bar (5).

4. A centrifugal concrete strength detection test mold according to claim 3, characterized in that: The push plate (4) matches the size of the through hole, and the push plate (4) is composed of two disks with different diameters.

5. A centrifuge concrete strength detection test mold according to claim 1, characterized in that: A plurality of support feet (9) distributed circumferentially are fixedly connected to the bottom of the main cylinder body (1). The support feet (9) are of a hollow structure.

6. A centrifugal concrete strength test mold according to claim 3, characterized in that: The guide rod (8) is of a round rod-shaped structure.

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