JPH0149888B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel high-pressure hose swing test device for testing the durability of a high-pressure hose by repeatedly applying impact hydraulic pressure to the inside thereof while giving the high-pressure hose a swinging motion.

Conventionally, this type of test equipment has a rotary manifold attached to a pair of rotary arms on a moving frame itself, as will be explained in detail with reference to the drawings later. Therefore, the rotation radius of the rotary manifold and the fixed manifold vary depending on the hose size. When adjusting the distance from the rotating manifold to the center of rotation,
After moving the entire device to match the center distance above, sliding the manifold on the rotating arm, and adjusting the radius of rotation, the tension of the transmission means such as the chain of the manifold tuning mechanism must be set each time. It didn't happen. Furthermore, due to its mechanism, even when the distance between the fixed manifold and the center of rotation is the closest, there is a limit to the distance at which the fixed manifold and the tip of the rotating arm do not interfere, making it particularly inappropriate for testing small-diameter hose sizes. There were other drawbacks.

Therefore, in the present invention, when changing the sample hose size in the high-pressure hose swing test device,
The present invention aims to provide a high-pressure hose swing test device that facilitates adjustment of the rotation radius of the rotating manifold and the distance from the fixed manifold to the center of rotation of the rotating manifold, and also enables testing of small diameter hoses. be.

The high pressure hose swing test device of the present invention has two pairs of parallel first rotating shafts (hereinafter referred to as
a first axis), one end of which is fixed to the first axis, and two pairs of parallel arms that rotate around the first axis; a pair of second rotation axes (hereinafter referred to as second axes) parallel to the first axis, which are attached so as to be adjustable in position; a slide plate pivotally supported on the second shaft; at least one rotary manifold mounted opposite the fixed manifold so as to be adjustable in position on the slide plate; a stationary manifold to which it is attached, and means for applying shock pressure to the hoses attached to each manifold, thereby adjusting the position on the sliding plate of the rotating manifold according to the size of the test hoses attached to each manifold. and the position of the second axis on the arm, and
A parallel link mechanism consisting of a shaft, an arm, and a slide plate is rotated around the first axis by a driving means, and impact hydraulic pressure is repeatedly applied to the hose while giving it a swinging motion, thereby improving the durability of the hose compared to conventional The test can be performed without causing such problems.

Next, the high-pressure hose swing test device according to the present invention will be described in detail with reference to the accompanying drawings, while comparing it with a conventional one.

FIG. 1 is a diagram showing the positional relationship between the fixed manifold and the rotating manifold in the hose swing impact test, where 1 is the test hose, 2 is the fixed manifold,
3 is a rotating manifold. a is the trajectory of the rotating manifold 3, b is the radius of rotation of the rotating manifold 3, c
is the distance between the rotation center of the fixed manifold 2 and the rotating manifold 3, and b and c need to be adjusted respectively depending on the size and specifications of the test hose.

FIG. 2 is a front view of a conventional rocking device, in which 4 is a rotating arm, 5 is a rotating shaft, 6 is a chain sprocket, 7 is a drive chain sprocket, 8 is a drive chain, 9 is a speed reducer, and 10 is a Electric motor with transmission, 1
1 is a chain tightener, 12 is a tuning chain, 13 is a tuning sprocket, 14 is a fixed sprocket, 15 is a stand, 16 is a screw shaft for position adjustment, 17 is a wheel, 18 is a base frame, and 19 is an adjustment screw shaft. be.

In this device, a test hose 1 is attached to a fixed manifold 2 and a rotating manifold 3, and the rotating manifold 3 has a manifold tuning mechanism, that is, a sprocket 14 concentrically fixed to a rotating shaft 5, and a sprocket 14 and a rotating manifold 3. The hose mounting surface of the manifold 3 is always facing upward by a chain 12 tensioned by a tightener 11 in between, and is rotated by an electric motor 10 and a reducer 9 via a chain 8 stretched between sprockets 6 and 7. . Depending on the size and specifications of the test hose 1, b and c must be adjusted as explained with reference to FIG. In this device, the rotation radius b of the rotating manifold is adjusted by adjusting the position of the rotating manifold 3 on the arm 4 by operating the adjusting screw shaft 19, but the tension of the chain 12 must also be adjusted in accordance with this adjustment. It won't happen. The distance c between the fixed manifold 2 and the center of rotation (rotation shaft 5) of the rotating manifold 3 requires operating the screw shaft 16 to move the pedestal 15 on the frame 18 using the wheels 17. Furthermore, when testing a small-diameter hose, it is necessary to reduce b and c, but a hose whose diameter is so small that the arm 4 touches the fixed manifold 2 cannot be tested.

Therefore, the present invention aims to provide a high-pressure hose swing test device that can solve the above-mentioned problems, is easy to handle, and can perform stable tests. FIG. 3 shows a side view, and FIG. 4 shows a side view.

The device of the invention is mounted on a fixed base 20. Two pairs of brackets 21 are fixed to the fixed base 20, and two pairs of first shafts and this shaft 22 are attached to each pair of brackets 21 in a horizontally parallel arrangement. Two pairs of arms 23, which rotate about axes, are fixed in parallel to each other at one end. Between each pair of arms 23, a pair of shafts 24 as second shafts are connected to each shaft 2.
2 via a slide flange 25, and the shaft 24 can be moved in the axial direction of each arm via the slide flange 25 by the operation of a screw shaft 26 to adjust its position. axis 2
4, a slide plate 28 is attached to the shaft 22 via a bearing 27.
and 24, or horizontally. A rotary manifold mounting seat 29 is attached to one end of the slide plate 28 through a T-slot 30 so as to be movable and positionally adjustable on the slide plate 28, and at least one rotary manifold 3 is attached to the mounting seat 29. There is. A fixed manifold 2 is disposed on a manifold fixing base in a positional relationship as explained in FIG. 1 with respect to the rotating manifold. Also, each shaft 22 has a sprocket 3.
The shaft 22 can be rotated by driving a chain 33, which is stretched between the intermediate shaft 32 and the sprocket 31, by an electric motor with a transmission (not shown) via the chain 34. As the shaft 22 rotates, a parallel link mechanism composed of the shaft 22, the shaft 24, the arm 23, and the slide plate 28 rotates around the shaft 22. On this occasion,
The slide plate 28 is kept horizontal at all times during rotation, so the rotary manifold 3 supported on the slide plate 28 is also kept horizontal and the hose 1 is kept facing upward, and a special manifold tuning mechanism is not required as in the conventional case. do not. Figure 3 shows the locus of the rotating manifold 3 at a
The radius of rotation of the shaft 24 about the axis 22 is indicated by d.

Next, the operation and operation of the high pressure hose swing test device according to the present invention will be briefly explained.

b and c explained in FIG. 1 are changed and adjusted according to the size and specifications of the test hose 1, which is attached to the fixed manifold 2 and the rotating manifold 3, and to which impact hydraulic pressure is repeatedly applied by an appropriate means (not shown). . The rotation radius b of the rotating manifold 3 is
The position shown in FIG. 3 can be adjusted by moving the shaft 24 relative to the shaft 22 by actuation of the screw shaft 26. In order to reduce b, it is sufficient to move the shaft 24 closer to the shaft 22,
To increase b, do the opposite.
The distance c between the fixed manifold 2 and the center of rotation O of the rotating manifold 3 can be adjusted by moving the mounting seat 29 of the rotating manifold 3 within the T-slot 30 in the position shown in FIG. . Rotating manifold 3 to reduce c
When looking at Figure 3, on the left side, to increase c, the third
If you look at the diagram, move it to the right side.

After making appropriate adjustments in accordance with the test hose, the shaft 22 is rotationally driven via the chain 34, intermediate shaft 32, chain 33, and sprocket 31 from a drive source (not shown). Then, a link mechanism consisting of the shaft 22, an arm 23 fixed to the shaft, a shaft 24 pivotally supported by the arm, and a slide plate 28 pivotally supported by the shaft 24 rotates around the shaft 22. At this time, the slide plate 28 is always maintained horizontally during rotation, and the rotating manifold 3 supported by the slide plate 28 is always maintained upward. Hydraulic shock is repeatedly applied to the hose during rotation, and the hose is subjected to a swing shock test.

In addition, when testing a very small diameter hose, the test conditions are that the rotation radius must be small and the distance between the rotation center O of the fixed manifold 2 and the rotating manifold 3 must also be small.
By replacing the manifold mounting seat 29 with one protruding from the tip of the fixed manifold side of the slide plate 28 and attaching the rotating manifold 3 to this mounting seat, that is, by attaching the rotating manifold 3 so as to overhang from the slide plate 28. I can handle it. This makes it possible to handle a wide range of test conditions.

As is clear from the above explanation, the high-pressure hose swing test device of the present invention has many advantages over conventional ones, as follows.

(1) When adjusting the rotation radius of the rotating manifold according to the size of the hose, this can be easily done without providing a manifold tuning mechanism to adjust the direction of the rotating manifold.

(2) When adjusting the distance between the rotation center of the fixed manifold and rotating manifold according to the size of the hose, there is no need to move the entire frame as in the past, and the frame can be fixed. Therefore, it can be installed firmly and is advantageous against mechanical vibrations.

(3) Although it was not possible to test small-diameter hoses with conventional equipment, this can be easily done with the equipment of the present invention.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the positional relationship between a rotating manifold and a fixed manifold when performing a swinging impact test on a high-pressure hose, Fig. 2 is a front view of a conventional swinging test device, and Fig. 3 is a high-pressure hose according to the present invention. A front view of the hose swing test device, and FIG. 4 is a side view of the same. Explanation of symbols, 1... High pressure hose, 2... Fixed manifold, 3... Manifold, 4... Rotating arm, 5... Rotating shaft, 6, 7... Sprocket, 8... Chain, 9
... Reduction gear, 10... Electric motor, 11... Chain tightener, 12... Tuning chain, 13... Tuning sprocket, 14... Fixed sprocket, 15... Frame, 16... Screw shaft for position adjustment, 17... Wheel, 18
... Base frame, 19 ... Adjustment screw shaft, 20 ... Fixing base, 21 ... Bracket, 22 ... First rotating shaft, 2
4... Second rotating shaft, 23... Arm, 25... Slide flange, 26... Screw shaft, 27... Bearing, 28... Slide plate, 29... Manifold mounting seat, 30... T slot, 31... Sprocket, 32... Intermediate shaft, 3
3, 34...Chain.

Claims (1)

[Claims] 1 Two pairs of parallel first rotating shafts that are pivotally supported by a mounting bracket on a fixed base and rotationally driven by a driving means; one end of which is fixed to the first rotating shaft;
two pairs of parallel arms that rotate around a rotational axis; and a second pair of second arms that are parallel to the first rotational axis and that are attached to the other end of each pair of arms so as to be adjustable in position in the axial direction of the arms. a rotating shaft, a sliding plate attached parallel to the first rotating shaft and the second rotating shaft and pivotally supported on the second rotating shaft, and a position adjustable on the sliding plate with respect to the fixed manifold. At least one rotating manifold attached to the slide plate, a fixed manifold fixed on the manifold fixing base corresponding to the rotating manifold, and a device for repeatedly applying impact pressure to the test hose attached to each manifold. means for adjusting the position on the slide plate of the rotary manifold and the position on the arm of the second rotary shaft according to the size of the test hose attached to each manifold, Rotating a parallel link mechanism composed of a rotating shaft, an arm, and a slide plate around a first rotating shaft by the driving means,
A high-pressure hose swing test device characterized by being configured to test the durability of a hose by repeatedly applying impact to the hose and swinging the hose.