CN207456942U - A kind of rock matter test specimen spilt test clamping device - Google Patents

Abstract

The utility model relates to the field of mechanical experiments of building materials, in particular to a clamping device for a splitting experiment of a rock test piece, which can overcome the shortcomings of the existing device, such as poor positioning, difficult centering and difficult loading of line loads when performing splitting experiments. The device mainly includes an upper pressure bearing plate, a lower pressure bearing plate, a screw, a handle, a positioning baffle and a base, and the lower surface of the upper pressure bearing plate and the upper surface of the lower pressure bearing plate each have a blade-shaped indenter, and the upper and lower positions of the two are Correspondingly, it is used for concentric failure when the upper and lower sides of the rock specimen are subjected to line load at the same time; each side has a circular positioning baffle, which can be used for positioning the specimen before loading. The circular positioning baffle and the handle are welded together as a whole through a screw, and the screw passes through a threaded hole whose diameter matches that of the base, and the rotating handle pushes the circular positioning baffle to realize the clamping of the specimen. The utility model has the advantages of simple structure and accurate positioning, can effectively solve the problems of eccentric clamping of rock test pieces in splitting experiments and difficult loading of line loads, and has good scientific research and use value.

Description

A clamping device for splitting experiments of rock specimens

technical field

The utility model belongs to the field of rock mechanics experiments, in particular to a clamping device for splitting experiments of rock test pieces.

Background technique

In the field of rock mechanics, when splitting rock specimens, using the upper and lower circular arc clamping devices, the steps are cumbersome and difficult to bear concentrated loads; it is difficult to center the center using the existing upper and lower pressure plates plus steel bar splitting clamping devices, and the steel bars It is easy to be embedded in the test piece and affect the experimental results. The ideal splitting test piece cannot be obtained by using the existing devices, the splitting position of the test piece is not accurate and the work efficiency is low. Therefore, it is necessary to develop a splitting experimental clamp that can accurately center the center and the test piece bears radial line load Devices are imperative.

Contents of the invention

In view of the above situation, the purpose of this utility model is to solve the problem of low work efficiency caused by the inaccurate splitting position of the rock test piece and the difficulty in bearing the load of the splitting line.

In order to achieve the above object, the technical solution of the utility model is a clamping device for a rock test piece splitting experiment, which includes an upper bearing plate, a lower bearing plate, a circular positioning baffle, a screw, a base and a handle. The lower surface of the upper pressure bearing plate itself has a blade-shaped indenter, and the upper surface of the lower pressure bearing plate itself has a blade-shaped indenter, and the upper and lower pressure bearing plates are both rectangular; the upper pressure bearing plate and the lower pressure bearing plate are The board matches the base and both can be successfully embedded in the base. Both the circular positioning baffle and the handle are solid cylinders, and the circular positioning baffle and the handle are respectively welded and connected to the two ends of the screw, and the welding points are respectively located at the center of the circular positioning baffle and the handle; the diameter of the screw is the same as that on the base The diameter of the threaded hole matches the screw hole, and the circular positioning baffle can be pushed forward by rotating the handle to realize the clamping of the test piece.

The specific process of utilizing the device of the present invention when carrying out the splitting experiment is as follows: a. The upper bearing plate is taken off, and the circular positioning baffles on both sides are gradually rotated close to the position range of the size of the test piece by rotating the handle; b. Place the rock test piece on the lower bearing plate, rotate the handle again to clamp the rock test piece, insert the upper bearing plate into the base, adjust until the upper and lower bearing plates are horizontal, and the upper and lower blade-shaped indenters Vertically align across the diameter of the test piece; c. Place the entire clamping device under the press and slowly load it, and rotate the handle to release the positioning baffle from the test piece.

The utility model has the advantages of simple structure and accurate positioning, can effectively solve the problems of eccentric clamping of rock test pieces in splitting experiments and difficult loading of line loads, and has good scientific research and use value.

Description of drawings

Fig. 1 is a top view of the upper bearing plate of the utility model.

Fig. 2 is a top view of the clamping device when the utility model fixes the rock test piece.

Fig. 3 is the front view of the clamping device when splitting after fixing the rock test piece of the utility model.

It includes an upper bearing plate (1), a base (3), a circular positioning baffle (4), a handle (5), a lower bearing plate (6), a screw rod (9), and a rock test piece (8).

Detailed ways

The specific embodiment of the utility model is illustrated below in conjunction with accompanying drawing.

The utility model comprises an upper pressure bearing plate (1), a lower pressure bearing plate (6), a circular positioning baffle (4), a screw rod (9), a base (3) and a handle (5).

As shown in Figure 1, the blade-shaped indenter (2) is provided by the upper bearing plate (1) itself.

As shown in Figure 2, the blade-shaped indenter (7) is provided by the lower pressure-bearing plate (6) itself; the circular positioning baffle (4) and the handle (5) are respectively welded and connected to the two ends of the screw (9). The points are respectively located at the center of the circular positioning baffle (4) and the handle (5); the diameter of the screw (9) matches the diameter of the threaded hole on the base (3), and the circular positioning baffle can be moved by rotating the handle (5). The plate (4) is pushed forward to realize the clamping of the test piece.

As shown in Figure 3, the upper pressure bearing plate (1) and the lower pressure bearing plate (6) are matched with the base (3), and both can be successfully embedded into the base (3), and the lower surface of the upper pressure bearing plate (1) itself has Some blade-shaped indenters (2) can be aligned with the blade-shaped indenters (7) on the upper surface of the lower bearing plate (6) to achieve centering damage.

The specific process of utilizing the device of the present invention in the splitting experiment is as follows: a. Remove the upper bearing plate (1), and gradually move the circular positioning baffles (4) on both sides by rotating the handle (5) Close to each other to the position range of the size of the specimen; b. Place the rock specimen on the lower bearing plate (6), rotate the handle (5) again to clamp the rock specimen (8), and place the upper bearing plate (1 ) into the base (3), adjust until the upper and lower bearing plates are horizontal, and the upper and lower blade-shaped indenters pass through the diameter of the test piece vertically; c. Put the entire clamping device under the press and load slowly, And rotate the handle (5) to release the circular positioning baffle (4) from the test piece.

Claims (2)

1. a kind of rock matter test specimen spilt test clamping device, it is characterised in that：Including upper bearing plate（1）, lower bearing plate（6）, circle Shape positioning baffle（4）, screw rod（9）, pedestal（3）And handle（5）；Upper bearing plate（1）Lower surface is per se with blade type pressure head（2）, Lower bearing plate（6）Upper surface is per se with blade type pressure head（7）, upper bearing plate（1）With lower bearing plate（6）It is rectangle；Circle is fixed Position baffle（4）And handle（5）It is solid cylinder, and circular positioning baffle（4）And handle（5）It is respectively welded and is connected to screw rod （9）Both ends, welding point is located at circular positioning baffle respectively（4）And handle（5）Circle centre position；Screw rod（9）Diameter and pedestal（3） On screw thread bore dia match, by rotating handle（5）It can be by circular positioning baffle（4）It pushes ahead, to realize test specimen Clamping.

2. a kind of rock matter test specimen spilt test clamping device according to claim 1, it is characterized in that：The upper bearing plate （1）With lower bearing plate（6）With pedestal（3）Match, can successfully be embedded into pedestal（3）In.