JPH0541400Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a testing device that can perform both tensile testing and compression testing of samples.

(Prior art) Conventionally, when changing from a tensile test to a compression test, the lower chuck and the flange for fixing it had to be removed at the same time, and the operation of removing the flange by removing bolts was complicated. It was time-consuming. Furthermore, when changing from a compression test to a tensile test, the lower chuck and the flange for fixing it had to be attached via bolts.

(Technical Problem) The present invention was developed in view of the shortcomings of the prior art, and it is possible to switch from a tensile test to a compression test by simply removing the lower chuck, without taking the trouble of removing the flange for fixing the lower chuck. The technical challenge is to make this process easier.

(Technical means) In the present invention, in order to solve the above technical problem, after removing only the lower chuck during the compression test,
In order to prevent the cylinder from getting in the way, the cylinder is lowered and stored inside a fixed cylinder previously provided on the board side. ), the configuration is as follows.

Reference numeral 1 denotes the main body of the tensile compression tester, and an upper substrate 3 and a lower substrate 4 are provided on the lower chuck 2 side.

5 is a fixed cylindrical body having an opening 5A fixed to the upper substrate 3 and the lower substrate 4;
On one side of its inner surface, there is a guide groove 6 and an upper locking step 7.
It has been made to form. Reference numeral 8 denotes a screw rod protruding from the center of a lid 9 attached to the inner bottom of the fixed cylinder 5, and is rotatable as appropriate with a pressing member 9A interposed on the lid 9. 8A is a box wrench fitting protrusion having a substantially rectangular planar shape formed at the upper end of the screw rod 8, and a box wrench Q which is provided separately.
(See Fig. 5) are fitted and mounted to twist the screw rod 8.

Further, this protrusion 8A is positioned below the opening 5A so as not to protrude beyond the fixed cylinder 5. Reference numeral 10 denotes a cylindrical body having an open end 10A for mounting the lower chuck 2, and the upper locking step 7 of the fixed cylindrical body 5 is provided at the lower part of the outer peripheral surface of the cylindrical body 10.
A stop stepped portion 11 is formed to face the guide groove 6, and a key protrusion 12 is formed on one side of the lower portion of the outer peripheral surface to slide into the guide groove 6.

When the cylindrical body 10 is projected outwardly from the upper substrate 3, the stop step 11 and the upper locking step 7 engage with each other to lock the cylinder 10 and lock the key. Since the protrusion 12 slides within the guide groove 6, the rotation of the cylinder 10 is restricted within the fixed cylinder 5.

Reference numeral 13 denotes a screw hole formed through the center of the inner bottom of the cylindrical body 10, and is screwed into a screw rod 8 provided in the fixed cylindrical body 5.

Therefore, by attaching a separately provided box wrench Q to the box wrench fitting protrusion 8A and twisting the screw rod 8 through this, the cylinder 10 can be exposed from inside the fixed cylinder 5. The descent will be concealed.

Reference numeral 14 denotes a connecting member 2A screwed onto the lower chuck 2 for use in the tensile test, and its base 14A is attached to the open end 10A of the cylindrical body 10, and the fitting hole 14B of the cylindrical body 10 is connected to the connecting member 14. A backlash prevention nut 17 is fitted and fixed by a pin member 15 so as to pass through the fitting hole 10B, and is screwed in advance to a screw rod 16 connecting the base 14A of the connecting member 14 and the lower chuck 2. By tightening so that the base portion 14A is pulled upward, the lower chuck 2 is attached to the open end 10A of the cylindrical body 10. Furthermore, when removing the lower chuck 2 from the cylindrical body 10 during the compression test, the nut 17 can be loosened, the pin member 15 can be pulled out, and the lower chuck 2 can be removed smoothly.

Further, the shapes of the box wrench Q and the box wrench fitting protrusion 8A are not limited to a rectangular plane, but may be hexagonal or octagonal. Reference numeral 18 denotes a sample mounting plate used during the compression test, on which the cylindrical body 10 is placed after being accommodated in the fixed cylindrical body 5.

(effect) The above technical means works as follows.

At the time of the tensile test, the box wrench Q is attached to the box wrench fitting protrusion 8A and twisted to cause the cylinder 10 to rise and emerge from the inside of the fixed cylinder 5. At that time, the stop step 11 of the cylinder 10 and the upper locking step 7 in the fixed cylinder 5
The cylindrical body 10 is locked by pressure contact with the cylindrical body 10.

Next, the base 14A of the connecting member 14 to which the lower chuck 2 is screwed is attached to the open end 10A of the cylindrical body 10, and the pin member 15 is passed through the fitting hole 14B and the fitting hole 10B, and then the nut 17 is inserted. The base 1
4A should be tightened and fixed by pulling it upward.

When performing a compression test, first remove the pin member 1 from the cylindrical body 10 while loosening the nut 17.
5 and lower chuck 2 together with the connecting member 14.
After removing the box wrench Q, which is separately provided from the open end 10A of the cylinder 10, attach it to the box wrench fitting protrusion 8A and twist the threaded bolt 8 in an appropriate direction to remove the cylinder. 10 is lowered and concealed into the fixed cylinder 5 and can be stored therein.

Next, the sample mounting plate 18 may be placed on the upper substrate 3 and a compression test may be performed.

(Effects) The present invention has the following unique effects.

In particular, since the cylindrical body is raised and exposed or lowered and hidden from the upper substrate using a box wrench or the like, it is possible to easily and smoothly switch between a tensile test and a compression test, or vice versa. It has the advantage of not requiring the troublesome effort of removing and attaching the flange.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention. FIG. 1 is a perspective view of the entire device body, FIG. Figure 3 is a longitudinal sectional front view showing the main part of the cylinder during the compression test, Figure 4 is a cross-sectional plan view taken along line X-X in Figure 2, and Figures 5 a to b are perspective views of the entire box wrench. be. 2... Lower chuck, 6... Guide groove, 7...
...Upper locking step, 5...Fixed cylinder, 8...Screw rod,
8A... Box wrench fitting protrusion, 10... Cylindrical body, 12... Key protrusion, 13... Screw hole, Q... Box wrench.

Claims (1)

[Scope of utility model registration request] At the bottom of the substrate on the side of the lower chuck 2, which constitutes a part of the main body of the tensile compression tester, there is a guide groove 6 on one side of the inner surface.
and an upper locking step 7, and a rotatable screw rod 8 is provided protruding from the center of the inner bottom of the fixed cylinder 5, while the lower chuck 2 is made detachable. A key protrusion 12 and a stop step 11 are formed on a part of the outer peripheral surface of the cylindrical body 10, and the key protrusion 12 is slidably fitted into the guide groove 6, so that the cylindrical body within the fixed cylindrical body 5 is On the other hand, a screw hole 13 formed at the center of the inner bottom of the cylinder body 10 is screwed into the screw rod 8, and by the twisting action of the screw rod 8, the cylinder body 10 is A tensile compression test device in which the upward movement is revealed or the downward movement is concealed from within the fixed cylinder 5.