Geogrid tensile test equipment

Abstract

The utility model relates to the field of tensile tests, in particular to geogrid tensile test equipment. The utility model aims to provide geogrid tensile test equipment capable of recording the pulling length, the geogrid tensile test equipment comprises a support frame, a double-shaft motor, two-way screw rods, a connecting plate, a clamping plate and the like, the double-shaft motor is mounted on the rear side of the support frame, output shafts at two ends of the double-shaft motor are connected with the two-way screw rods, and the two-way screw rods are connected with the clamping plate. The two-way lead screw is rotationally connected with the supporting frame, the connecting plate is arranged on the two-way lead screw in a threaded mode, and the clamping plate is arranged on the front portion of the connecting plate in a sliding mode. When the connecting plate moves towards the outer side, the clamped civil grid can be driven to move towards the outer side, the pointer can be driven to move towards the outer side, after the civil grid is broken, the double-shaft motor is closed, at the moment, tensile data can be recorded by observing scales on the graduated scale pointed by the pointer, and detection data is more accurate and visual.

Description

Technical Field

[0001] The utility model relates to the field of tensile tests, in particular to a geogrid tensile test device. Background Technique

[0002] A geogrid is a main geosynthetic material. Compared with other geosynthetics, it has unique properties and functions and is commonly used as a reinforcement material for reinforced soil structures or a reinforcement material for composite materials, etc. Before using a geogrid, quality inspection is essential, and usually, a tensile test needs to be carried out on it.

[0003] Currently, the quality of geogrids is usually detected by a tensile test device. First, a part of the geogrid needs to be taken, its two ends are clamped, and then the two ends of the geogrid are pulled for a tensile test. Whether it is qualified is detected by the length that the geogrid can be pulled. However, when the existing tensile test device is used, generally, the pulled length is observed by the naked eye, and the detected data is inaccurate.

[0004] In summary, there is an urgent need for a geogrid tensile test device that can record the pulled length to solve the above problems. Content of the Utility Model

[0005] In order to overcome the shortcoming that the existing tensile test device needs to observe the pulled length by the naked eye and the detected data is inaccurate, the purpose of the utility model is to provide a geogrid tensile test device that can record the pulled length.

[0006] The technical implementation scheme of the utility model is as follows:

[0007] A geogrid tensile test device includes a support frame, a biaxial motor, a bidirectional lead screw, a connecting plate, a clamping plate, a fixing nut, a full gear, a belt gear, an elastic member, a scale, and a pointer. A biaxial motor is installed at the rear of the support frame. Bidirectional lead screws are connected to the output shafts at both ends of the biaxial motor. The bidirectional lead screws are rotatably connected to the support frame. Connecting plates are threadedly arranged on the bidirectional lead screws. Clamping plates are slidably arranged at the front of the connecting plates. Fixing nuts are symmetrically arranged in the front and rear of the connecting plates on the left and right. The fixing nuts are located in front of the clamping plates. Full gears are connected to the fixing nuts. A belt gear is wound between the two corresponding full gears on the left and right. Three elastic members are evenly spaced and connected between the rear of the clamping plate and the adjacent connecting plate. Scales are connected to both sides of the support frame. Pointers are connected to both sides of the connecting plate. The pointers are located inside the scales.

[0008] Optionally, it further includes a protective pad. The protective pad is connected to the front side of the connecting plate, and the protective pad is also connected to the rear side of the clamping plate.

[0009] Optionally, the clamping plate is trapezoidally arranged.

[0010] Optionally, the protective pad has a certain thickness.

[0011] Optionally, scales are provided on both the upper and lower parts of the scale ruler.

[0012] Optionally, the support frame is arranged as a frame body.

[0013] Optionally, the outside of the pointer contacts the adjacent scale ruler.

[0014] The utility model has the following advantages:

[0015] 1. When the connecting plate moves outward, it can drive the clamped geogrid to move outward and can also drive the pointer to move outward. After the geogrid is broken, the double-shaft motor is turned off. At this time, the tensile data can be recorded by observing the scale on the scale ruler pointed by the pointer, and the detection data is more accurate and intuitive.

[0016] 2. The protective pad of the utility model can protect both ends of the geogrid to prevent the subsequent damage of the geogrid from affecting the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 is a three-dimensional structural schematic diagram of components such as the double-shaft motor, bidirectional lead screw and connecting plate of the utility model.

[0019] Figure 3 is a three-dimensional structural schematic diagram of components such as the protective pad, clamping plate and fixing nut of the utility model.

[0020] Figure 4 is a three-dimensional structural schematic diagram of components such as the full gear, belt tooth and elastic member of the utility model.

[0021] Figure 5 is a three-dimensional structural schematic diagram of components such as the connecting plate, scale ruler and pointer of the utility model.

[0022] Wherein: 1 - support frame, 2 - double-shaft motor, 3 - bidirectional lead screw, 4 - connecting plate, 5 - protective pad, 6 - clamping plate, 7 - fixing nut, 8 - full gear, 9 - belt tooth, 10 - elastic member, 11 - scale ruler, 12 - pointer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following describes the utility model in detail with reference to the drawings and specific embodiments, but it is not intended to limit the utility model.

[0024] Embodiment: A geogrid tensile test device, refer to Figures 1-5As shown in the figure, it includes a support frame 1, a biaxial motor 2, a bidirectional lead screw 3, a connecting plate 4, a protective pad 5, a clamping plate 6, a fixing nut 7, a full gear 8, a belt tooth 9, an elastic member 10, a scale 11 and a pointer 12. The support frame 1 is set as a frame body, which has good stability. A biaxial motor 2 is installed in the middle at the rear side of the support frame 1. Output shafts at both ends of the biaxial motor 2 are connected with bidirectional lead screws 3 through couplings. The bidirectional lead screws 3 are rotatably connected with the support frame 1. A connecting plate 4 is arranged on the bidirectional lead screws 3 in a threaded manner. A clamping plate 6 is slidably arranged at the front part of the connecting plate 4. The clamping plate 6 is trapezoidally arranged. A protective pad 5 is connected to the front side of the connecting plate 4, and a protective pad 5 is also connected to the rear side of the clamping plate 6. The protective pad 5 has a certain thickness, and the protective pad 5 is used for protecting the geogrid. When the connecting plate 4 moves outward, it can drive the clamping plate 6 and the geogrid to move outward to achieve the purpose of the tensile test. Fixing nuts 7 are symmetrically arranged in a threaded manner at the front part of the connecting plate 4 on the left and right. The fixing nuts 7 are located at the front side of the clamping plate 6. Full gears 8 are connected to the fixing nuts 7. A belt tooth 9 is wound between two corresponding full gears 8 on the left and right. Three elastic members 10 are evenly spaced and connected between the rear side of the clamping plate 6 and the adjacent connecting plate 4. Scales 11 are welded on both the left and right sides of the support frame 1. Scales are arranged on both the upper and lower parts of the scale 11. Pointers 12 are welded on both the left and right sides of the connecting plate 4. The pointers 12 are located inside the scale 11, and the outer sides of the pointers 12 are in contact with the adjacent scale 11. By observing the scale pointed to by the pointer 12 when it moves outward, the tensile data can be directly recorded.

[0025] When the device needs to be used, first place the device at the designated position, then place the two ends of the geogrid to be tested between the connecting plate 4 and the clamping plate 6 respectively. Subsequently, people rotate the fixing nut 7 on the left, causing the fixing nut 7 on the left to move backward. The backward movement of the fixing nut 7 on the left will squeeze the clamping plate 6 to move backward, compressing the elastic member 10. At the same time, the rotation of the fixing nut 7 on the left will drive the rotation of the full gear 8 on the left. The rotation of the full gear 8 on the left drives the rotation of the belt gear 9, and the rotation of the belt gear 9 drives the rotation of the fixing nut 7 on the right, causing the fixing nut 7 on the right to rotate and move backward. The backward movement of the fixing nut 7 on the right will also squeeze the clamping plate 6 to move backward, so that the clamping plate 6 can be squeezed to move backward simultaneously. The backward movement of the clamping plate 6 can clamp the two ends of the geogrid through the protective pad 5. The protective pad 5 can protect the two ends of the geogrid to avoid being damaged during subsequent pulling and affecting the detection. After the two ends of the geogrid are clamped, the double-shaft motor 2 can be started. The rotation of the output shaft of the double-shaft motor 2 drives the rotation of the bidirectional lead screw 3. The rotation of the bidirectional lead screw 3 drives the connecting plate 4 to move outward. The outward movement of the connecting plate 4 can pull the clamped geogrid outward and drive the pointer 12 to move outward. When the geogrid is broken, turn off the double-shaft motor 2. At this time, the tensile data can be recorded by observing the scale on the scale 11 pointed to by the pointer 12, thus completing the tensile test of the geogrid. Then, by reversing the fixing nut 7 on the left, the elastic member 10 returns to its original state, causing the clamping plate 6 to move forward and release the geogrid.

[0026] It should be understood that this embodiment is only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A geogrid tensile test device, comprising a support frame (1), a double-axis motor (2), a bidirectional screw rod (3), a connecting plate (4), a clamping plate (6), a fixing nut (7), a full gear (8), a belt tooth (9) and an elastic member (10), wherein the double-axis motor (2) is mounted on the rear side of the support frame (1), the bidirectional screw rod (3) is connected to the output shafts at both ends of the double-axis motor (2), the bidirectional screw rod (3) is rotatably connected to the support frame (1), and the connecting plate (4) is threadedly arranged on the support frame (1). On the bidirectional screw rod (3), the clamping plate (6) is slidably arranged on the front part of the connecting plate (4), the fixing nut (7) is symmetrically arranged on the front part of the connecting plate (4) in a threaded manner, the fixing nut (7) is located on the front side of the clamping plate (6), the full gear (8) is connected to the fixing nut (7), the belt teeth (9) are wound between the two full gears (8) corresponding to the left and right, and the three elastic members (10) are evenly spaced and connected between the rear side of the clamping plate (6) and the adjacent connecting plate (4). Its characteristics are: It also comprises a scale (11) and a pointer (12), wherein the scale (11) is connected to the left and right sides of the support frame (1), and the pointer (12) is connected to the left and right sides of the connecting plate (4), and the pointer (12) is located inside the scale (11).

2. A geogrid tensile test device according to claim 1, characterized in that: It also includes a protection pad (5), which is connected to the front side of the connecting plate (4) and is also connected to the rear side of the clamping plate (6).

3. A geogrid tensile test device according to claim 1, characterized in that: The clamping plate (6) is arranged in a trapezoidal shape.

4. A geogrid tensile test device according to claim 2, characterized in that: The protective pad (5) has a certain thickness.

5. A geogrid tensile test device according to claim 1, characterized in that: The scale (11) is provided with scales on the upper and lower parts.

6. A geogrid tensile test device according to claim 1, characterized in that: The support frame (1) is arranged as a frame.

7. A geogrid tensile test device according to claim 1, characterized in that: The outer side of the pointer (12) contacts the adjacent scale (11).

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