JPS6329229Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is mainly a test to ensure that the filling state of the sample in the mold is in a uniform compaction state when molding a test piece of a sample of soft soil mixed with a hardening agent such as cement milk. This invention relates to a sample filling device for pieces.

BACKGROUND ART In recent years, as a ground improvement method for reclaimed soft ground in ports and the like, and soft clay ground at the bottom of water, methods of hardening the soft soil by mixing a hardening agent such as cement milk into the soft soil have been widely used.

In this type of ground improvement method, prior to construction, the soft soil that is to be improved is sampled.
Various types of samples are prepared by separately mixing various combinations of curing agents with this, and these are filled into molds to create various types of test pieces. Various tests such as strength tests are conducted on each of these test pieces. We are selecting the most appropriate hardening agent or the mixing ratio of various hardening agents and the amount to be mixed into soft soil.

When molding this test piece,
Traditionally, a mixed sample is manually placed into a mold.
In order to achieve a uniform compaction state, shock was being applied manually.

Specifically, the method of applying this impact involves manually hitting the mold containing the sample against a thick iron plate an appropriate number of times. For example, this is done by placing the sample in three layers in a mold and tapping each layer 20 times from a height of about 20 cm.

However, this test piece requires many types of samples with different conditions such as the type of hardening agent, its mixing ratio, and the amount mixed into soft soil. However, since several types of tests are required, it is necessary to make several identical ones, and the composition of the soft soil may differ depending on the location even at the same construction site.
Therefore, samples are collected from multiple locations, and the characteristics of the test piece are required for each sample.
In one construction project, it is necessary to create a large number of test pieces, and if this is done manually, it not only requires a large amount of labor and is uneconomical, but also causes the degree of consolidation to be uneven. It was sufficient to produce something that could not be used as a test piece.

In view of the above-mentioned problems, the present invention is a sample filling device for test pieces that can automatically compact the sample housed in a mold with little effort and in a uniform and sufficient state when creating a test piece. The purpose of this system is to provide a shock plate against which a mold containing a test piece sample is struck, a guide rail installed on the shock plate, and a vertical movement with respect to the guide rail. a mold catcher that is freely supported and removably holds the mold therein; and a mold catcher that is located above the mold catcher and is supported to be movable up and down with respect to the guide rail, and the lower part of the mold catcher attracts the mold catcher. a catch lifter having an electromagnet for lifting the catch lifter; a lifting member for hoisting the catch lifter; a vertical drive means for moving the hanging member up and down; The present invention relates to a sample filling device for a test piece, comprising a mold catcher control means for shutting off the mold catcher.

Next, an example of implementation of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a horizontally arranged bottom substrate in the form of a flat plate, on which a wooden impact plate 2 is stacked. A plurality of columns 3, 3, . . . are erected on the bottom substrate 1, and an upper frame 4 is fixed to the upper ends thereof.

Guide rails 5, 5, . . . whose upper ends are supported by the upper frame 4 are erected on the upper surface of the impact plate 2. These guide rails 5, 5... are used as a pair, and a mold catcher 6 and its mold catcher 6 are placed between each pair of guide rails.
A catch lifter 7 for hoisting up and down is supported separately in an upper and lower arrangement so as to be freely movable up and down.

Each guide rail 5 is formed by placing an acrylic pipe 8 on the outside and inserting a reinforcing core 9 through the center, and the mold catcher 6 has a substantially arched shape as shown in FIGS. 4 to 6. Mold support base frame 10
, an opening/closing frame 11 supported to be openable and closable with respect to this mold support base frame 10 , and a mold support base frame 1
0 and a cylindrical magnet attracting body 12 integrally provided on the magnet.

The mold support base frame 10 has guide rail fitting recesses 13, 13 formed at both ends thereof.
13 is fitted into the guide rails 5, 5 and supported slidably in the vertical direction. Also, the opening/closing frame 11
The mold 14 is held between the mold supporting base frame 10, and one end is connected to the shaft 1.
5 is pivotally supported on the mold support base frame 10, and the other end is swingably attached to the mold support base frame 10 with a shaft 17 in a two-pronged portion 16 for inserting a swing screw. A screw 18 is inserted and a butterfly screw 19 is tightened to lock it.

Furthermore, the magnetic adsorbent 12 is attached to the top plate 2 on the top of the cylinder 20.
1 are fixed together, and this top plate 21 is attracted by a magnet, which will be described later.

As shown in FIGS. 7 and 8, the catch lifter 7 has guide rail fitting recesses 22, 22 formed at both ends in the same manner as described above, an electromagnet 23 is fixed to the lower surface, and a hanging metal fitting 24 is fixed to the upper surface. The lower end of a hanging member 25 made of wire rope is connected to the metal fitting 24, and the electromagnet 23 is used to attract the top plate 21 of the magnet attracting body 12 described above.

A vertical drive means 26 for vertically moving the hanging material 25 is provided on the upper frame 4. In this case, an endless chain 29 is wound around the outer periphery of a pair of sprockets 28a and 28b that are respectively attached to a pair of parallel shafts 27a and 27b arranged above and below, and a hanging material locking pin 30 is provided protruding from the end face of the endless chain 29. By hooking the ring portion 25a at the upper end of the hanging member 25 to the pin 30, the hanging member 25 is reciprocated up and down in accordance with the rotation of the endless chain 29.

The endless chain 29 is driven by the upper shaft 27a.
The rotation of the motor 32 is transmitted through an interlocking gear 31 fixed to the motor.

Further, on the lower surface of the upper frame 4, at the top dead center position of the catch lifter 7, a detection switch 33 constituting mold catcher control means is provided.

This detection switch 33 detects the lifting of the catch lifter 7, and a weight 35 is suspended from a switch operating arm 34, and is operated when the weight 35 is pushed up by the catch lifter 7.

Then, each time the weight 35 is pushed up, the power supply to the electromagnet 23 is stopped.

The number of times the switch is operated is detected by a counter, and the power switch of the motor 32 is turned off when the switch is operated a preset number of times.

In the figure, 36 is a guide curler for hanging material, 37 is a power cord for the electromagnet 23, 38 is a guide roller for the cord, and 39 is a weight for tensioning the cord.

Next, the operation of the apparatus configured as described above will be explained. First, a sample is placed in the mold 14, and with the lid closed, the sample is transferred to the mold catcher 6.
to support. When the motor 32 is driven in this manner, the endless chain 29 is moved up and down via the shaft 27a and the sprocket 28a, and the catch lifter 7 is moved up and down.

During the vertical movement of the catch lifter 7, the mold catcher 6 is attracted by the electromagnet 23 at its lowest position and rises, and the detection switch 33 is operated at the top dead center position, so that the electromagnet 23 is energized. Cut and mold catcher 6
is released from adsorption and falls, hitting the impact plate 2.

Thereafter, the catch lifter 7 descends and attracts the mold catcher 6 again at its lowest position, and the same operation as described above is repeated. Then, the mold catcher 6 is pressed a preset number of times.
When a fall hits the motor 3 automatically
The power switch 2 is turned off and the operation is stopped.

In this embodiment, a plurality of shafts 27a are driven by the motor 32 via the interlocking gear 31.
Sprockets 28 are arranged in parallel and have endless chains 29 wrapped around each end of each shaft 27a.
A is attached, and a corresponding number of falling and striking mechanisms are provided for each,
Furthermore, the position of the pin 30 attached to the endless chain 29 in each mechanism is shifted and attached to each mechanism, so that the free fall of the mold catcher 6 is performed one by one with a time lag in each mechanism, This prevents impact noise from becoming louder.

The device of the present invention is constructed as described above, and includes a catch lifter and a molded catcher that are vertically movable along a guide rail erected on an impact plate.The catch lifter is suspended with a hanging material and driven vertically. Move it up and down by means of
During the vertical movement, a switch is automatically operated to turn off the power to the electromagnet when the catch lifter is in the raised position, and the mold catcher is dropped onto the impact plate, which eliminates the need to hit the mold manually as in the past. It is no longer necessary to consolidate the sample, and the consolidation points of a large number of mold samples can be efficiently achieved in a short time. The result is uniformity, no defective products, and good test pieces can be formed efficiently.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a vertical sectional view of the mechanism, and FIG. 4 is a front view of the mold catcher.
5 is a longitudinal sectional view of the same, FIG. 6 is a sectional view taken along the line in FIG. 5, FIG. 7 is a plan view of the catch lifter, and FIG. 8 is a longitudinal sectional view of the same. 1... Bottom board, 2... Shock plate, 3... Support column, 4
...Upper frame, 5...Guide rail, 6...Mold catcher, 7...Catch lifter, 25...
...Hanging material, 26... Sprocket, 28a, 28
b... Sprocket, 29... Endless chain, 3
0... Hanging material locking pin, 31... Interlocking gear, 32
……motor.

Claims (1)

[Scope of utility model registration request] An impact plate against which a mold containing a test piece sample is struck, a guide rail erected on the impact plate, and a mold carrier that is supported so as to be movable up and down with respect to the guide rail and that holds the mold removably therein. a catch lifter located above the mold catcher and supported so as to be movable up and down with respect to the guide rail, the catch lifter having an electromagnet at the bottom that attracts the mold catcher, and a hanging member for hoisting the catch lifter;
For a test piece, comprising a vertical drive means for moving the hanging material up and down, and a mold catcher control means attached at an appropriate position to detect the raised position of the catch lifter and temporarily cut off electricity to the electromagnet. Sample filling device.