Concrete elasticity modulus measuring equipment

Abstract

The utility model discloses concrete elasticity modulus measuring equipment which comprises a pair of mounting rings, a pair of connecting rods, a pair of connecting rods and a pair of connecting rods, the connecting frame is arranged between the pair of mounting rings; the base is arranged on the lower end face of the mounting ring on the lower layer; the pressing rod is horizontally connected to the mounting ring in a sliding manner and is used for pressing the peripheral surface of the concrete test piece; and the driving mechanism is used for controlling all the pressing rods on each layer to slide synchronously. The utility model has the following advantages and effects: by arranging the pressing rods capable of synchronously moving on the mounting ring, the automatic centering and automatic clamping and fixing of the concrete test piece are realized, and the accuracy of the placing position of the concrete test piece is ensured, so that the detection accuracy of the concrete test piece is improved, and meanwhile, the detection efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the field of concrete detection, in particular to a device for measuring the elastic modulus of concrete. Background Art

[0002] The elastic modulus of concrete reflects the relationship between the compressive stress and strain exerted on concrete, and is one of the parameters necessary to calculate the deformation, crack development and temperature stress of reinforced concrete structures and large-volume concrete.

[0003] When using a traditional concrete elastic modulus measuring instrument, the fastening screws on the upper and lower rings are usually tightened to compress the specimen. The upper and lower rings are installed on the center line of both sides of the concrete specimen and symmetrically at both ends of the concrete specimen. The concrete specimen is then placed on a pressure testing machine for testing.

[0004] However, during the actual installation process, it is impossible to ensure that the tightening amount of each fastening screw is the same, that is, it is impossible to ensure that the concrete specimen is in the exact center of the upper ring and the lower ring. Therefore, this will affect the actual detection accuracy and needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the utility model is to provide a concrete elastic modulus measuring device with the effect of improving the detection accuracy.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A concrete elastic modulus measuring device, comprising:

[0007] A pair of mounting rings, used to be mounted on the upper and lower ends of the concrete specimen;

[0008] a connecting frame, disposed between the pair of mounting rings;

[0009] A base, arranged on the lower end surface of the mounting ring of the lower layer;

[0010] A pressure rod, horizontally slidably connected to the mounting ring and used to press the surrounding surfaces of the concrete specimen;

[0011] The driving mechanism is used to control the synchronous sliding of all the compression rods on each layer.

[0012] In a preferred example, the present invention can be further configured as follows: the driving mechanism includes a driving ring, a guide rod, a handle and a locking piece, the driving ring is coaxially connected to the mounting ring, the guide rod is vertically arranged on the pressure rod, the mounting ring is provided with a guide groove arranged along its diameter direction and for the guide rod to slide, the driving ring is provided with an arc-shaped guide hole, the guide hole is for the guide rod to pass through, the handle is provided on the outer wall of the driving ring, and the locking piece is used to fix the handle to the mounting ring.

[0013] In a preferred example, the present invention can be further configured as follows: the locking member includes a locking rod, a pull rod, a locking seat and a nut, the locking rod is arranged on the handle, the pull rod is rotatably connected to the locking rod, the locking seat is arranged on the outer wall of the mounting ring, and a locking groove for the pull rod to be embedded is provided at the end, the nut is threadedly connected to the pull rod, and is used to tighten the side wall of the locking seat.

[0014] In a preferred example, the present invention can be further configured as follows: the connecting frame includes a tube body, a rod body and a screw, the tube body and the rod body are respectively vertically arranged on the side walls of a pair of mounting rings and are slidably connected to each other, and the screw is arranged on the tube body and is used to press the outer wall of the rod body.

[0015] In a preferred example, the present invention can be further configured as follows: the base includes a seat plate and a screw rod, the screw rod is vertically arranged on the seat plate, and the upper end of the screw rod is threadedly connected to the lower end surface of the mounting ring of the lower layer.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. By setting a synchronously moving pressure rod on the mounting ring, the concrete specimen can be automatically centered and clamped, ensuring the accuracy of the placement of the concrete specimen, thereby improving the detection accuracy of the concrete specimen and also improving the detection efficiency;

[0018] 2. By setting up a height-adjustable connecting frame, the distance between a pair of mounting rings can be easily adjusted, thereby adapting to concrete specimens of different heights and specifications, thereby improving the practicality of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of an embodiment;

[0020] Figure 2 2 is a schematic structural diagram of a driving mechanism of an embodiment.

[0021] Figure numerals: 1. Mounting ring; 2. Connecting frame; 21. Tube body; 22. Rod body; 23. Screw; 3. Base; 31. Seat plate; 32. Screw; 4. Pressure rod; 5. Driving mechanism; 51. Driving ring; 52. Guide rod; 53. Handle; 54. Guide groove; 55. Guide hole; 6. Locking piece; 61. Locking rod; 62. Pull rod; 63. Locking seat; 64. Nut; 65. Locking groove. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a concrete elastic modulus measuring device includes a pair of mounting rings 1, a connecting frame 2, a base 3, a pressure rod 4 and a driving mechanism 5.

[0024] like Figure 1 As shown, a pair of mounting rings 1 are used to be mounted on the upper and lower ends of the concrete specimen, the connecting frame 2 is arranged between the pair of mounting rings 1, the base 3 is arranged on the lower end surface of the lower mounting ring 1, and the pressure rod 4 is horizontally slidably connected to the mounting ring 1 and is used to press the surrounding surfaces of the concrete specimen.

[0025] like Figure 1 、 Figure 2 As shown, the driving mechanism 5 is used to control the synchronous sliding of all the pressure rods 4 on each layer. The driving mechanism 5 includes a driving ring 51 , a guide rod 52 , a handle 53 and a locking member 6 .

[0026] like Figure 1 、 Figure 2 As shown, the driving ring 51 is coaxially connected to the mounting ring 1, the guide rod 52 is vertically arranged on the pressure rod 4, and the mounting ring 1 is provided with a guide groove 54 arranged along its diameter direction for the guide rod 52 to slide.

[0027] like Figure 1 、 Figure 2 As shown, the driving ring 51 is provided with an arc-shaped guide hole 55 for the guide rod 52 to pass through. The handle 53 is provided on the outer wall of the driving ring 51, and the locking member 6 is used to fix the handle 53 on the mounting ring 1.

[0028] like Figure 1 、 Figure 2 As shown, locking member 6 comprises a locking rod 61, a pull rod 62, a locking seat 63, and a nut 64. Locking rod 61 is mounted on handle 53, and pull rod 62 is rotatably connected to locking rod 61. Locking seat 63 is mounted on the outer wall of mounting ring 1 and has a locking groove 65 at its end for insertion of pull rod 62. Nut 64 is threadedly connected to pull rod 62 and is used to compress the side wall of locking seat 63.

[0029] When the concrete specimen needs to be tested, the concrete specimen is placed vertically in a pair of mounting rings 1 at will, and then the handle 53 is controlled to rotate. At this time, the handle 53 drives the driving ring 51 to move synchronously. At this time, under the cooperation of the guide rod 52 and the guide hole 55, the driving ring 51 controls the guide rod 52 and the pressure rod 4 to move synchronously and move toward the surface of the concrete specimen, realizing automatic centering and automatic clamping and fixing of the concrete specimen, ensuring the accuracy of the placement of the concrete specimen, thereby improving the detection accuracy of the concrete specimen and also improving the detection efficiency.

[0030] Then, the pull rod 62 is controlled to rotate so that the pull rod 62 is embedded in the locking groove 65 on the locking seat 63, and then the nut 64 is gradually tightened to tighten the pull rod 62 and the locking rod 61, and at the same time, the handle 53 and the drive ring 51 are tightened, indirectly achieving the compression and fixation of the concrete specimen to ensure stability during testing.

[0031] like Figure 1 As shown, the connecting frame 2 includes a tube body 21, a rod body 22 and a screw 23. The tube body 21 and the rod body 22 are respectively vertically arranged on the side walls of a pair of mounting rings 1 and are slidably connected to each other. The screw 23 is arranged on the tube body 21 and is used to press the outer wall of the rod body 22.

[0032] Therefore, by providing a height-adjustable connecting frame 2, the distance between a pair of mounting rings 1 can be conveniently and quickly adjusted, thereby adapting to concrete specimens of different height specifications and improving the practicality of the entire equipment.

[0033] like Figure 1 As shown, the base 3 includes a base plate 31 and a screw rod 32 . The screw rod 32 is vertically arranged on the base plate 31 , and the upper end of the screw rod 32 is threadedly connected to the lower end surface of the lower mounting ring 1 .

[0034] Therefore, by providing a height-adjustable base 3, automatic leveling of the lower mounting ring 1 can be achieved, ensuring that it can be stably placed in the pressure testing machine while improving detection accuracy.

[0035] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A concrete elastic modulus measuring device, characterized in that: include: A pair of mounting rings (1) for being mounted on the upper and lower ends of the concrete specimen; A connecting frame (2) is arranged between the pair of mounting rings (1); A base (3) is provided on the lower end surface of the mounting ring (1) at the lower layer; A pressure rod (4) is horizontally slidably connected to the mounting ring (1) and is used to press the surrounding surfaces of the concrete specimen; A driving mechanism (5) for controlling the synchronous sliding of all the compression rods (4) on each layer; The driving mechanism (5) comprises a driving ring (51), a guide rod (52), a handle (53) and a locking member (6); the driving ring (51) is coaxially connected to the mounting ring (1); the guide rod (52) is vertically arranged on the pressure rod (4); the mounting ring (1) is provided with a guide groove (54) arranged along the diameter direction thereof and for the guide rod (52) to slide; the driving ring (51) is provided with an arc-shaped guide hole (55) for the guide rod (52) to pass through; the handle (53) is arranged on the outer wall of the driving ring (51); and the locking member (6) is used to fix the handle (53) on the mounting ring (1); The locking member (6) includes a locking rod (61), a pull rod (62), a locking seat (63) and a nut (64); the locking rod (61) is arranged on the handle (53); the pull rod (62) is rotatably connected to the locking rod (61); the locking seat (63) is arranged on the outer wall of the mounting ring (1) and has a locking groove (65) at the end thereof for the pull rod (62) to be embedded; the nut (64) is threadedly connected to the pull rod (62) and is used to press the side wall of the locking seat (63).

2. A concrete elastic modulus measuring device according to claim 1, characterized in that: The connecting frame (2) comprises a tube (21), a rod (22) and a screw (23); the tube (21) and the rod (22) are respectively vertically arranged on the side walls of a pair of mounting rings (1) and are slidably connected to each other; the screw (23) is arranged on the tube (21) and is used to press the outer wall of the rod (22).

3. The concrete elastic modulus measuring device according to claim 1, characterized in that: The base (3) comprises a seat plate (31) and a screw rod (32). The screw rod (32) is vertically arranged on the seat plate (31), and the upper end of the screw rod is threadedly connected to the lower end surface of the lower mounting ring (1).

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