JPH0610280Y2 - Impact load device for centrifugal force loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a centrifugal loading device for model experiments on soil properties, and a device for applying secondary impact load to a model to test behavior of soil properties. .

(Prior Art) As a means for applying a secondary load other than centrifugal acceleration to a model in the field of centrifugal acceleration, conventionally, a string is attached to a weight, the string is wound around a reel, and the reel is locked. A device was used to rewind the string and release the weight by releasing the stopper.

(Problems to be Solved by the Invention) The conventional means as described above requires mechanical parts such as a reel, a stopper, and a clutch, which makes the device large in size, which is disadvantageous for mounting in the field of centrifugal force. There is also a problem that there is a resistance when the reel is released and the string is rewound and true impact energy cannot be obtained.

The present invention has been made in order to solve such a problem, and in a centrifugal force loading device, a secondary impact load is applied to the model in the direction perpendicular to the model in the centrifugal acceleration field, that is, in the same direction as the centrifugal force. The purpose is to obtain a device for applying by instantaneous release.

(Means for Solving the Problems) In order to achieve the above object, an impact load device for a centrifugal force loading device according to the present invention comprises a sample container at a tip of a frame fixed to a vertical central axis driven to rotate by a motor. The platform on which the weight is mounted is pivotally connected via an arm, and a weight connected to the center of the end surface of the frame with a high-strength nylon wire, a horizontal guide for guiding the weight to the sample container, and the height. The main point is that a tension nylon wire heating and fusing device is installed.

(Operation) In the present invention, since the sample container for storing the model is fixed to the platform pivotally attached to the tip of the frame via the arm, the sample container is swung up with the rotation of the frame, and the sample container is weighed. Positioned exactly to bear the load. Then, the high-weight nylon wire is melted by the instantaneous heat generation of the coil heater built in the heat blower, and the weight is momentarily released, and the energy set for the model is accurately shock-loaded.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

That is, a centrifugal force loading device in which the present invention is implemented comprises a device main body 1, a motor control panel 2, an operation panel 3, a control unit 4, a hydraulic unit 5, etc., as shown in FIGS. Cage, in this motor control panel 2, operation panel 3
Is for rotating the centrifugal force loading device main body 1, and the control unit 4 and the hydraulic unit 5 are mainly for giving a secondary load other than centrifugal acceleration to the model.

By the way, the vertical center axis 6 of the apparatus main body 1 is
It is supported via a rolling bearing incorporated in the drive shaft 8, and is connected to a drive system leading to a motor 12 via a coupling 9, a speed reducer 10 and a mechanical brake 11 in the lower part.

Reference numeral 13 denotes a frame, which is fixed to the vertical central axis 6 and circularly moves while keeping horizontal by the rotation of the vertical central axis 6, and an arm 15 pivotally mounted with a pin 14 is provided at the tip thereof. A platform 16 is installed, and a sample container 17 for accommodating a model is mounted on the platform 16.

Reference numeral 18 is a weight held by a high-strength nylon wire 19 whose base end is bonded to the center of the end surface of the frame 13, and this weight is provided in a horizontal guide 21 horizontally supported by a supporting member 20 provided on the frame 13. When it is stored and released, it is guided to the sample container 17. Reference numeral 22 is a heating and fusing device, which energizes and heats a built-in coil heater to fuse the high-tensile nylon wire 19 and release the weight 18.

In the device of the present invention constructed as described above, the rotation of the motor 12 is transmitted to the vertical central shaft 20, and the frame 13 rotates together with the shaft. The rotation of the frame 13 causes the platform 16 to swing up, and a centrifugal force acts on the model housed in the sample container 17. At this time, the weight 18 is positioned by the horizontal guide 21 so as to accurately load the impact load position of the model. Then, the weight 18 is released by fusing the high-strength nylon wire 19, so that a shock is applied to the model inside the sample container 17 in a state where centrifugal acceleration is applied.

(Effects of the Invention) As described above, according to the present invention, the platform on which the sample container is mounted is pivotally attached via the arm to the tip of the frame which is fixed to the vertical center axis of the centrifugal force loading device and is rotationally driven. The frame is equipped with a weight bound with a high-strength nylon wire, a horizontal guide for guiding the weight, and a heat blower for cutting the high-tensile nylon wire in the center of the end surface of the frame. Accurately counteracts the given model with acceleration, and its release is instantaneous and non-resistive, so the energy set for the model can be accurately shock-loaded. Further, since the device is miniaturized, it is advantageous in mounting in the field of large centrifugal acceleration.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a partially cutaway plan view, FIG. 2 is a front view, and FIG. 3 is a first view.
It is an expansion top view of the A section in a figure. 1 is an apparatus main body, 6 is a vertical central axis, 12 is a motor, 13 is a frame, 15 is an arm, 16 is a platform, 17
Is a sample container, 18 is a weight, 19 is a high-strength nylon wire, 2
1 is a horizontal guide, and 22 is a heat blower.

Claims (1)

[Scope of utility model registration request] 1. A platform, on which a sample container is mounted, is pivotally mounted via an arm to the tip of a frame fixed to a vertical central axis that is rotationally driven by a motor, and high-strength nylon is provided at the center of the end surface of the frame. An impact load device for a centrifugal force loading device, comprising: a weight connected with a wire, a horizontal guide for guiding the weight to the sample container, and the high-tensile nylon wire heating and fusing device.