JP2021060315A - Pressure test machine - Google Patents

Abstract

To provide a pressure test machine capable of efficiently performing pressure test of a water-cooled bearing, easily and safely performing attaching and detaching work of the water-cooled bearing, and eliminating necessity of separately providing posture holding means of the water-cooled bearing.SOLUTION: A pressure test machine 100 is for testing a pressure resistance function of a water passage 11 of a water-cooled bearing 10, and includes: a plurality of test stands 1L, 1R on which a plurality of water-cooled bearings 10 can be mounted; a female screw hole 18 and a male screw 28 that are fixing means for detachably fixing the water-cooled bearing 10 to the test stands 1L, 1R; a holding plate that is holding means for keeping the test stands 1L, 1R in a fixed posture and a truck; a plurality of connection ports 4, 4 that are opened at positions connectable respectively to a plurality of openings on a bottom surface of the water-cooled bearing 10 mounted on the test stands 1L, 1R on an upper surface 1a of the test stands 1L, 1R; and a liquid supply passage built-in the test stands 1L, 1R for filling test liquid in the water passage 11 of the water-cooled bearing 10 via the connection ports 4, 4.SELECTED DRAWING: Figure 4

Description

The present invention relates to a pressure resistance tester used for a water pressure resistance test of a cooling water path built in a water-cooled bearing such as a bearing of a split roll for transporting a high-temperature object.

In areas where high-temperature slabs are transported in steelworks, for example, a split roll 500 for transporting high-temperature materials is used, as shown in FIG. As shown in FIGS. 15 and 16, in the split roll 500 for transporting high-temperature objects, three rolls 501a, 501b, and 501c are mounted on the water-cooled bearing stand 505 so as to form the same straight line, and the respective rolls are mounted. Water-cooled bearings 10 are arranged at both ends of 501a, 501b, and 501c.

As shown in FIG. 15, in the operating split roll 500 for transporting high-temperature objects, the water-cooled bearings 10 arranged at both ends of the rolls 501a, 501b, and 501c are each covered with a removable cover 13. ..

As shown in FIGS. 17 to 20, in the water-cooled bearing 10, a water passage 11 for circulating cooling water is built in, and a plurality of openings 12 and 12 communicating with the water passage 11 are opened on the bottom surface 14. ing. As shown in FIGS. 17 and 18, below the front surface of the water-cooled bearing 10, a supply port 16 for supplying lubricating oil to the bearing surface 15 and a lubricating oil circulating on the bearing surface 15 are discharged. An oil drain port 17 is provided. Further, the bottom surface 14 of the water-cooled bearing 10 is provided with a concave groove 19 parallel to the axis 10c of the water-cooled bearing 10, and female screw holes 18 and 18 are provided symmetrically with the concave groove 19 in between, respectively. Is provided.

As shown in FIGS. 19 and 20, the water passage 11 has vertical portions 11a and 11a rising vertically from the openings 12 and 12 of the bottom surface 14, respectively, and horizontal portions extending in the left-right lateral direction from the upper ends of the vertical portions 11a and 11a, respectively. The portions 11b and 11b are provided with an inverted U-shaped peripheral portion 11c that surrounds the outer peripheral portion of the bearing surface 15 and communicates with the horizontal portions 11b and 11b.

As shown in FIG. 15, cooling water is supplied from the arrow V direction to the operating split roll 500 for transporting high-temperature objects, and the supplied cooling water is the water-cooled bearing at the left end of the roll 501a in FIG. 10 (see FIG. 20) flows into the vertical portion 11a from one opening 12 and flows out from the other opening 12 via the horizontal portion 11b, the peripheral portion 11c, the other horizontal portion 11b and the vertical portion 11a. ..

The cooling water flowing out from the water-cooled bearing 10 at the left end of the roll 501a flows in the water passage pipe 502 and flows into the water passage through one opening 12 of the water-cooled bearing 10 (see FIG. 20) at the right end of the roll 501a. It goes around the inside of 11 and flows out from the other opening 12, flows in from one opening 12 of the water-cooled bearing 10 (see FIG. 20) at the left end of the adjacent roll 501b, goes around the inside of the water passage 11 and goes around the other. Outflow from the opening 12 of the.

The cooling water flowing out from the water-cooled bearing 10 at the left end of the roll 501b flows through the water pipe 503 and flows in from one opening 12 of the water-cooled bearing 10 (see FIG. 20) at the right end of the roll 501b. It flows through the water pipe 504 via the same route as described above, and finally flows out from the other opening 12 of the water-cooled bearing 10 (see FIG. 20) at the right end of the roll 501c, in the arrow W direction. Is drained to.

By the way, the water-cooled bearing 10 constituting the split roll 500 for transporting high-temperature objects shown in FIG. 15 is after maintenance (repair) when regular maintenance is performed or when urgent repair is performed. A pressure resistance test is performed on the water-cooled bearing 10 (later) in order to confirm the water pressure resistance of the water passage 11.

In the conventional pressure resistance test, the test jig 20 as shown in FIG. 21 is used. The test jig 20 includes a support plate 21 on which a water-cooled bearing 10 can be placed, a water supply pipe 22 and a drain pipe 23 that communicate with a plurality of water passage paths (not shown) provided in the support plate 21. An on-off valve 26 is attached in the middle of the water supply pipe 22. On the upper surface of the support board 21, a connecting portion 24 communicating with the water supply pipe 22 and a connecting portion 25 communicating with the drain pipe 23 are provided. Further, a plurality of through holes 27, 27 are provided in the support board 21.

As shown in FIG. 21, when the water-cooled bearing 10 is placed on the support plate 21 of the test jig 20, the plurality of openings 12, 12 of the bottom surface 14 of the water-cooled bearing 10 shown in FIG. It is coaxially connected to the connecting portions 24 and 25 of 21, and similarly, the plurality of female screw holes 18 and 18 on the bottom surface 14 are coaxially communicated with the plurality of through holes 27 and 27 of the support board 21.

In this way, after the water-cooled bearing 10 is placed on the support plate 21 of the test jig 20, male screws 28 and 28 are inserted from the lower surface side of the support plate 21 toward the through holes 27 and 27, and female screws 28 and 28 are inserted, respectively. When the water-cooled bearing 10 is screwed into the screw holes 18 and 18 and tightened, the water-cooled bearing 10 is fixed to the support plate 21.

After that, the on-off valve 26 is opened, and the test water pumped from a predetermined water supply source (not shown) via the water supply pipe 22 is filled into the water passage 11 (see FIG. 20) of the water-cooled bearing 10. By closing the drainage pipe 23 side, holding the water passage 11 in a state where a predetermined water pressure is generated for a predetermined time, and confirming the presence or absence of water leakage from the holding water passage 11, the pass / fail judgment of the pressure resistance test can be made. It is done.

On the other hand, although the technical field is different from that of the present invention, as the equipment used for the pressure resistance test such as the high pressure water supply hose and the high pressure water supply hose terminal portion, for example, the "firefighting water supply pipe pressure resistance tester" described in Patent Document 1. Further, there is a "fire hose end pressure tester" described in Patent Document 2.

Japanese Unexamined Patent Publication No. 2004-154332 Japanese Unexamined Patent Publication No. 2005-221475

As shown in FIG. 21, in the withstand voltage test using the conventional test jig 20, only one water-cooled bearing 10 can be subjected to the withstand voltage test with one test jig 20, so that the efficiency of the test work is improved. There is a problem that it is bad.

Further, when the water-cooled bearing 10 is set on the test jig 20, the male screws 28 and 28 must be turned upside down so that the bottom surface 14 (see FIG. 18) is turned upward. Since it is not possible to perform the screwing work, a great deal of labor is also spent on the reversing work.

Further, during the pressure resistance test using the test jig 20, a posture holding means must be separately provided in order to hold the water-cooled bearing 10 and the test jig 20 integrated with each other in a predetermined posture. The work also requires a great deal of effort.

On the other hand, the "fire-fighting water pipe pressure-resistant tester" described in Patent Document 1 and the "fire-fighting hose terminal pressure-resistant tester" described in Patent Document 2 are the fire-fighting water pipe and the fire-fighting hose terminal, respectively. Since it is specialized for performing a pressure resistance test, it cannot be used for a pressure resistance test of the water-cooled bearing shown in FIGS. 15 to 19.

Therefore, the problem to be solved by the present invention is that the pressure resistance test of the water-cooled bearing can be made more efficient, the water-cooled bearing can be easily and safely attached and detached, and the attitude holding means of the water-cooled bearing can be maintained. The purpose is to provide a pressure resistance tester that does not need to be provided separately.

The pressure resistance tester according to the present invention is
It is a pressure resistance tester that tests the pressure resistance function of the water passage of a water-cooled bearing having a structure in which a water passage for circulating cooling water is built in and a plurality of openings communicating with the water passage are opened on the bottom surface. hand,
A test stand on which multiple water-cooled bearings can be placed,
A fixing means for detachably fixing the water-cooled bearing to the test stand, and
A holding means for keeping the test table in a constant posture and
On the upper surface of the test table, a plurality of connection ports provided at positions capable of connecting to a plurality of openings of the water-cooled bearing mounted on the test table, and a plurality of connection ports.
It is characterized in that it is provided with a liquid supply path provided in the test table for filling the water passage of the water-cooled bearing via the connection port with a test liquid.

In the pressure resistance tester, the liquid supply path can be provided inside the test stand.

In the pressure resistance tester, the liquid supply path may be provided below the test stand.

In the pressure resistance tester, as the fixing means, a female screw hole provided on the lower surface side of the water-cooled bearing and a male screw that penetrates the test table and can be screwed into the female screw hole are provided. be able to.

The pressure resistance tester may be provided with wheels capable of transporting the test table and the holding means.

According to the present invention, the pressure resistance test of the water-cooled bearing can be made more efficient, the water-cooled bearing can be easily and safely attached and detached, and the posture holding means of the water-cooled bearing does not need to be separately provided. Machines can be provided.

It is a partially omitted plan view which shows the pressure resistance tester which is an embodiment of this invention. It is a partially omitted side view of the pressure resistance tester shown in FIG. 1 as viewed from the arrow P direction. (A) is a front view seen from the direction of AA line in FIG. 2, (b) is a partially omitted sectional view taken along line BB in FIG. 2, and (c) is a partially omitted sectional view in FIG. It is a partially omitted sectional view on the CC line. It is a partially omitted perspective view which shows the process of setting a water-cooled bearing on the test table of the pressure resistance tester shown in FIG. It is a partially omitted perspective view showing a state in which a water-cooled bearing is set on the test table of the pressure resistance tester shown in FIG. 1 and mounted on the carriage. It is a partially omitted side view of the pressure resistance tester shown in FIG. It is a partially omitted front view of the pressure resistance tester seen from the arrow Q direction in FIG. It is a partially cut side view which shows the state which set the water-cooled bearing on the test table of the pressure-resistant tester which is another embodiment of this invention. It is a partial notch front view seen from the arrow line R direction in FIG. It is a partially omitted plan view of the pressure resistance tester seen from the DD line shown in FIG. It is a partially omitted bottom view of the pressure resistance tester seen from the arrow S direction in FIG. It is a partially cut side view which shows the state which set the water-cooled bearing on the test table of the pressure-resistant tester which is another embodiment of this invention. It is a partially omitted plan view of the counter pressure tester seen from the line EE in FIG. It is a partially omitted bottom view of the pressure resistance tester seen from the arrow T direction in FIG. It is a partially omitted perspective view which shows the split roll for transporting a high temperature thing. FIG. 15 is an enlarged view of a part of a split roll for transporting a high-temperature object as viewed from the direction of the arrow U in FIG. It is a front view of the water-cooled bearing which constitutes the split roll for transporting a high temperature material shown in FIG. It is a partially omitted bottom view of the water-cooled bearing shown in FIG. FIG. 6 is a partially omitted cross-sectional view taken along the line FF in FIG. It is a partially omitted sectional view of the water-cooled bearing in the GG line in FIG. It is a partially omitted perspective view which shows the process of setting the water-cooled bearing shown in FIG. 17 in a conventional pressure resistance tester.

Hereinafter, the pressure resistance testers 100, 200, and 300 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 14.

First, the pressure resistance tester 100 will be described with reference to FIGS. 1 to 7. As shown in FIGS. 4 and 5, the pressure resistance tester 100 according to the present embodiment is a device capable of simultaneously testing the pressure resistance function of the water passage 11 of the plurality of water-cooled bearings 10. Since the water-cooled bearing 10 has the same structure and function as the above-mentioned water-cooled bearing 10 described with reference to FIGS. 17 to 20, the description thereof will be omitted.

As shown in FIGS. 1 to 5, the pressure resistance tester 100 has a plurality of test stands 1L, 1R on which a plurality of water-cooled bearings 10 can be mounted, and the water-cooled bearings 10 can be attached to and detached from the test stands 1L, 1R. The female screw hole 18 and the male screw 28 which are the fixing means for fixing, the holding plate 2 and the trolley 3 which are the holding means for keeping the test tables 1L and 1R in a constant posture, and the test table 1L on the upper surface 1a of the test tables 1L and 1R. , A plurality of connection ports 4 and 4 and connection ports 4 and 4 provided at positions where they can be connected to a plurality of openings 12 and 12 (see FIG. 18) on the bottom surface 14 of the water-cooled bearing 10 mounted on the 1R. A liquid supply path 5 built in the test tables 1L and 1R for filling the water passage 11 of the water-cooled bearing 10 via the test table 4 is provided.

A plurality of through holes 6 for inserting the male screw 28 are provided in the test tables 1L and 1R, and a ridge portion 7 is provided on the upper surface 1a of the test tables 1L and 1R, respectively. When the water-cooled bearing 10 is set on the test tables 1L and 1R, the concave groove 19 (see FIG. 17) on the bottom surface 14 of the water-cooled bearing 10 and the ridge portion 7 are fitted to each other.

As shown in FIGS. 1 and 2, in the pressure resistance tester 100, two test tables 1L and 1R are arranged on the same plane, and the test tables 1L and 1R are connected by two tubular bodies 8 and 8. ing. In FIG. 1, the liquid supply pipe 21 is connected to the liquid supply path 5a built in the left side of the test table 1L, and the drainage pipe 23 is connected to the liquid supply path 5d built in the right side of the test table 1R. .. Further, the liquid supply path 5b built in the right side of the test table 1L and the liquid supply path 5c built in the left side of the test table 1R are communicated with each other by a liquid passage pipe 22 inserted in the tubular body 8. .. As shown in FIG. 4, the liquid supply pipe 21 and the drainage pipe 23 are provided with on-off valves 21v and 23v, respectively.

As shown in FIGS. 5 to 7, in the pressure resistance tester 100, the lower surfaces of the test tables 1L and 1R are fixed on the holding plate 2 erected on the loading portion 32 of the carriage 3 having a plurality of wheels 31. As a result, the test tables 1L and 1R are held in a constant posture (horizontal posture). Since the wheels 31 of the trolley 3 are rotatable, an operator (not shown) can transport the pressure resistance tester 100 to an arbitrary place by grasping and pushing or pulling the handle 33.

Here, how to use the pressure resistance tester 100 will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, a water-cooled bearing 10 is placed on the upper surfaces 1a of the test tables 1L and 1R, respectively, and a male screw 28 is inserted from below the test tables 1L and 1R toward the through hole 6, and the water-cooled bearing 10 is inserted. When screwed into the female screw hole 18 of the above, the water-cooled bearing 10 is fixed to the test tables 1L and 1R. At this time, as shown in FIG. 5, due to the presence of the holding plate 2, a predetermined gap is formed between the lower surfaces of the test tables 1L and 1R and the loading portion 32 of the carriage 3, so that the male screw 28 The screwing work can be performed easily and safely.

When a plurality of water-cooled bearings 10 are set for the test tables 1L and 1R, the liquid supply pipe 21 is connected to the liquid supply means (for example, water supply equipment), and the liquid discharge pipe 23 is connected to the liquid drainage means (for example, drainage equipment). ), The on-off valves 21v and 23v are opened to allow the test liquid (for example, water) to flow into the water passages 11 (see FIG. 20) of the plurality of water-cooled bearings 10.

When it is confirmed that the water passages 11 of all the water-cooled bearings 10 are filled with the test liquid, the on-off valve 23v is closed to bring a predetermined hydraulic pressure to the water passages 11 of the plurality of water-cooled bearings 10. .. The pass / fail of the pressure resistance test is determined by holding the bearing in this state for a certain period of time and checking for the presence or absence of liquid leakage from the water-cooled bearing 10.

After the pressure resistance test is completed, the on-off valve 21v is closed, the on-off valve 23v is opened, and the test liquid in the water passage 11 of the water-cooled bearing 10 is discharged. After that, if the male screw 28 is loosened and separated from the female screw hole 18 of the water-cooled bearing 10, the water-cooled bearing 10 can be removed from the test stands 1L and 1R.

In this way, the pressure resistance tester 100 can simultaneously perform the pressure resistance test of a plurality of water-cooled bearings 10, so that the pressure resistance test can be made more efficient. Further, in the pressure resistance tester 100, the water-cooled bearing 10 can be attached to and detached from the upper surface 1a of the test tables 1L and 1R held in the horizontal state in an upright posture, so that the water-cooled bearing 10 can be attached and detached. The work can be performed easily and safely, and there is no need to separately provide a posture holding means for the water-cooled bearing.

The withstand voltage tester 100 includes two test stands 1L and 1R, but the present invention is not limited to this, and three or more test stands may be provided.

Next, the pressure resistance testers 200 and 300 will be described with reference to FIGS. 8 to 11 and 12 to 14. In the component parts of the pressure resistance testers 200 and 300, the parts common to the component parts of the pressure resistance tester 100 described above are designated by the same reference numerals as those shown in FIGS. 1 to 7 and the description thereof will be omitted. ..

The withstand voltage tester 200 shown in FIGS. 8 to 11 includes one test stand 201 on which a plurality (4) water-cooled bearings 10 can be mounted, and is mounted on the upper surface 201a of the test stand 201. A liquid supply path (liquid supply pipe 202, drainage pipe 203) for filling the water passage 11 (see FIG. 20) of the water-cooled bearing 10 is provided under the test table 201 in an exposed state. .. On-off valves 202v and 203v are provided at the ends of the liquid supply pipe 202 and the drainage pipe 203, respectively.

The means for fixing the water-cooled bearing 10 to the test table 201 are the female screw hole 18 and the male screw 28 as in the above-mentioned pressure resistance tester 100. However, in the pressure resistance tester 200, the lower surface 201b and the male of the test table 201 A tubular spacer 29 is fitted between the screw 28 and the head of the screw 28.

After setting a plurality of water-cooled bearings 10 on the upper surface 201a of the test table 201, the ends of the liquid supply pipe 202 and the liquid drainage pipe 203 are connected to the liquid supply means and the liquid drainage means, respectively, and the on-off valves 202v and 203v are opened. After filling the water passages 11 (see FIG. 20) of the plurality of water-cooled bearings 10 with the test liquid, the on-off valve 203v of the drainage pipe 203 is closed, and the water passages 11 of the plurality of water-cooled bearings 10 are filled with the predetermined liquid. It is assumed that pressure is generated. The pass / fail of the pressure resistance test can be determined by holding the bearing in this state for a certain period of time and checking the presence or absence of liquid leakage from the water-cooled bearing 10.

In the pressure resistance tester 200, a liquid supply path (liquid supply pipe 202, drainage pipe 203) is provided under the test table 201 in an exposed state, and the water passages 11 of the plurality of water-cooled bearings 10 are communicated in parallel. Hydraulic pressure can be applied in the state. Since the liquid supply pipe 202 and the drainage pipe 203 have the same structure and function, they can be used in reverse to each other.

The pressure resistance tester 200 exhibits the same functions and effects as the pressure resistance tester 100 described above.

Next, the pressure resistance tester 300 will be described with reference to FIGS. 12 to 14. The components of the pressure resistance tester 300 that are common to the pressure resistance tester 200 described above are designated by the same reference numerals as those in FIGS. 8 to 11 and the description thereof will be omitted.

The pressure resistance tester 300 shown in FIGS. 12 to 14 includes one test stand 301 on which a plurality of (three) water-cooled bearings 10 can be mounted, and a plurality of test tables 301 mounted on the upper surface 301a of the test stand 301. A liquid supply path (liquid supply pipe 302, drainage pipe 303) for filling the water passage 11 (see FIG. 20) of the water-cooled bearing 10 of the above is provided under the test table 301 in an exposed state. .. On-off valves 302v and 303v are provided at the ends of the liquid supply pipe 302 and the drainage pipe 303, respectively.

After setting a plurality of water-cooled bearings 10 on the upper surface 301a of the test table 301, the ends of the liquid supply pipe 302 and the drainage pipe 303 are connected to the liquid supply means and the liquid drainage means, respectively, and the on-off valves 302v and 303v are opened. After filling the water passages 11 (see FIG. 20) of the plurality of water-cooled bearings 10 with the test liquid, the on-off valve 303v of the drainage pipe 303 is closed, and the water passages 11 of the plurality of water-cooled bearings 10 are filled with the predetermined liquid. It is assumed that pressure is generated. The pass / fail of the pressure resistance test can be determined by holding the bearing in this state for a certain period of time and checking the presence or absence of liquid leakage from the water-cooled bearing 10.

The functions and effects of the pressure resistance tester 300 are the same as those of the pressure resistance testers 100 and 200 described above, but the advantage of the pressure resistance tester 300 is that it is more compact than the pressure resistance tester 200.

The withstand voltage testers 100, 200, and 300 described with reference to FIGS. 1 to 14 exemplify the withstand voltage tester according to the present invention, and the withstand voltage tester according to the present invention is the withstand voltage tester 100 described above. , 200, 300, but not limited to.

The pressure resistance tester according to the present invention can be widely used in industrial fields such as steelworks and other manufacturing industries that use split rolls for transporting high-temperature materials.

1L, 1R, 201,301 Test stand 1a, 201a, 301a Top surface 2 Holding plate 3 Bogie 4 Connection port 5,5a, 5b, 5c, 5d Liquid supply path 6 Through hole 7 Convex part 8 Tubular body 10 Water-cooled bearing 11 Water passage 11a Vertical part 11b Horizontal part 11c Circulation part 12 Opening 13 Cover 16 Refueling port 17 Oil drain port 18 Female screw hole 19 Recessed groove 21 Liquid supply pipe 21v, 23v, 202v, 203v, 302v, 203v Open / close valve 22 Pipe 23 Drainage pipe 28 Male screw 30 Bogie 31 Wheel 32 Loading part 33 Handle 201b, 301b Bottom surface

Claims (5)

It is a pressure resistance tester that tests the pressure resistance function of the water passage of a water-cooled bearing having a structure in which a water passage for circulating cooling water is built in and a plurality of openings communicating with the water passage are opened on the bottom surface. hand,
A test stand on which multiple water-cooled bearings can be placed,
A fixing means for detachably fixing the water-cooled bearing to the test stand, and
A holding means for keeping the test table in a constant posture and
On the upper surface of the test table, a plurality of connection ports provided at positions capable of connecting to a plurality of openings of the water-cooled bearing mounted on the test table, and a plurality of connection ports.
A pressure resistance tester provided with a liquid supply path provided on the test table for filling the water passage of the water-cooled bearing via the connection port with a test liquid. The pressure resistance tester according to claim 1, wherein the liquid supply path is provided inside the test table. The pressure resistance tester according to claim 1, wherein the liquid supply path is provided below the test table. Claims 1 to 3 include, as the fixing means, a female screw hole provided on the lower surface side of the water-cooled bearing and a male screw that penetrates the test table and can be screwed into the female screw hole. The withstand voltage tester described in any section. The pressure resistance tester according to any one of claims 1 to 4, provided with wheels capable of transporting the test table and the holding means.

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