CN218765201U

CN218765201U - Volute leak detection and clearance measurement jig

Info

Publication number: CN218765201U
Application number: CN202223289303.9U
Authority: CN
Inventors: 罗重一; 丁仕东
Original assignee: Jiangsu Shiyicheng Mechanical And Electrical Technology Co ltd
Current assignee: Jiangsu Shiyicheng Mechanical And Electrical Technology Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-28
Anticipated expiration: 2032-12-08

Abstract

The utility model belongs to the technical field of the tool and specifically relates to clearance tool is surveyed to spiral case leak hunting. This tool includes that bottom plate, spiral case positioning mechanism, valve opening and closing mechanism, crank lift mechanism, interval detection mechanism, crank prevent inclined to one side mechanism, horizontal slip table cylinder, install spiral case positioning mechanism, valve opening and closing mechanism for switch valve, the interval detection mechanism, the horizontal slip table cylinder that are used for measuring clearance between crank and the bush that are used for being used for fixing a position the spiral case on the bottom plate, be equipped with on the spiral case positioning mechanism and be used for the gas pocket of past defeated gas in the spiral case, install the crank that is used for going up and down the crank on the horizontal slip table cylinder and lift mechanism and be used for guaranteeing crank and the parallel crank of bush axle center and prevent inclined to one side mechanism. The utility model discloses a spiral case positioning mechanism who takes the gas pocket comes to carry out the leakproofness test to the spiral case. The movable gap between the crank and the bush is accurately detected through the crank lifting mechanism and the spacing detection mechanism, and the crank is prevented from deviating from the axis during lifting through the crank deviation prevention mechanism.

Description

Volute leak detection and clearance measurement jig

Technical Field

The utility model belongs to the technical field of the tool and specifically relates to clearance tool is surveyed to spiral case leak hunting.

Background

The volute is internally provided with a lining, a valve rod, a valve and a crank, the upper end and the lower end of the valve rod are respectively fixed with the valve and the crank, and the valve rod penetrates through the lining. After the volute is produced, the tightness of the volute and the movable gap between the crank and the lining need to be detected. But at present, no single jig can detect the sealing performance and the gap of the volute. And when detecting the clearance, the clearance can't be accurately detected because the crank deviates from the axis when lifting.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the technical problem of description among the background art, the utility model provides a clearance tool is surveyed to spiral case leak hunting. And performing a tightness test on the volute through a volute positioning mechanism with an air hole. The movable gap between the crank and the bush is accurately detected through the crank lifting mechanism and the spacing detection mechanism, and the crank is prevented from deviating from the axis during lifting through the crank deviation prevention mechanism.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a spiral case leak hunting clearance tool of surveying, includes that bottom plate, spiral case positioning mechanism, valve closing mechanism, crank lift mechanism, interval detection mechanism, crank prevent inclined to one side mechanism, horizontal slip table cylinder, install on the bottom plate and be used for fixing a position spiral case positioning mechanism, be used for switch valve's valve closing mechanism, be used for measuring interval detection mechanism, the horizontal slip table cylinder of clearance between crank and the bush, be equipped with the gas pocket that is used for gas transmission in the spiral case on the spiral case positioning mechanism, install on the horizontal slip table cylinder and be used for lifting the crank of crank and lift mechanism and be used for guaranteeing crank and the parallel crank of bush axle center and prevent inclined to one side mechanism.

Specifically, spiral case positioning mechanism includes that three-jaw chuck, positioning seat, rotatory air cylinder, kicking block drive actuating cylinder and constitute, and three-jaw chuck, positioning seat, kicking block drive actuating cylinder all fix on the bottom plate, and the cylinder body of rotatory air cylinder is fixed on the positioning seat down, is equipped with the gas pocket on the positioning seat, is fixed with the kicking block on the piston rod of kicking block drive actuating cylinder.

Specifically, valve opening and closing mechanism is driven actuating cylinder, dull and stereotyped by push rod, push rod drive electric jar, ejector pin and is constituteed, and the flat board is fixed on the bottom plate, and the cylinder body of push rod drive electric jar is fixed on the flat board, and the piston rod of push rod drive electric jar is connected on the push rod, and the push rod is smooth to be joined in marriage and is connected on the flat board, and the push rod top is equipped with the elbow that is used for promoting the crank, is fixed with the ejector pin that is used for withstanding the valve on the piston rod of ejector pin drive actuating cylinder, and the ejector pin drives actuating cylinder's cylinder body and fixes on the slide of horizontal slip table cylinder.

Specifically, the crank lifting mechanism consists of a connecting frame, a lifting cylinder and a jacking column, wherein a cylinder body of the lifting cylinder is fixed on a sliding seat of a horizontal sliding table cylinder, the connecting frame is fixed on a piston rod of the lifting cylinder, the connecting frame is connected on a vertical rail on the sliding seat of the horizontal sliding table cylinder in a sliding manner, and the jacking column used for jacking a valve rod is fixed at the bottom end of the connecting frame.

Specifically, the crank deviation prevention mechanism is composed of an electric cylinder, a crank ejecting block, a valve rod ejecting block and a U-shaped frame, the U-shaped frame is fixed on a piston rod of the electric cylinder, the crank ejecting block is fixed at the upper end of the U-shaped frame, the valve rod ejecting block is fixed at the lower end of the U-shaped frame, and a cylinder body of the electric cylinder is fixed on a sliding seat of a horizontal sliding table cylinder.

Specifically, the distance detection mechanism is a displacement sensor.

The beneficial effects of the utility model are that: the utility model provides a spiral case leak hunting clearance tool. And performing a tightness test on the volute through a volute positioning mechanism with an air hole. The movable gap between the crank and the bush is accurately detected through the crank lifting mechanism and the spacing detection mechanism, and the crank is prevented from deviating from the axis during lifting through the crank deviation prevention mechanism.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of the positioning seat and the rotary hold-down cylinder of the present invention;

fig. 3 is a schematic structural diagram of the top block and the top block driving cylinder of the present invention;

FIG. 4 is a schematic structural view of the crank lifting mechanism and the crank deviation prevention mechanism of the present invention;

in the figure, 1, a bottom plate, 2, a volute positioning mechanism, 3, a valve opening and closing mechanism, 4, a crank lifting mechanism and 5

Distance detection mechanism, 6 crank anti-deviation mechanism, 7 horizontal sliding table cylinder, 8 air hole, 21 three-jaw chuck,

22. a positioning seat, 23, a rotary pressing cylinder, 24, a top block, 25, a top block driving cylinder, 31, a push rod,

32. a push rod driving electric cylinder, 33 push rods, 34 push rod driving air cylinders, 35 flat plates, 41 connecting frames,

42. the lifting device comprises a lifting cylinder, 43. A lifting column, 61. An electric cylinder, 62. A crank jacking block, 63. A valve rod jacking block and 64.

A U-shaped frame.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Fig. 1 is a schematic structural diagram of the present invention; fig. 2 is a schematic structural view of the positioning seat and the rotary down-pressing cylinder of the present invention; fig. 3 is a schematic structural diagram of the top block and the top block driving cylinder of the present invention; fig. 4 is a schematic structural view of the crank lifting mechanism and the crank deviation preventing mechanism of the present invention.

As shown in the attached drawing 1, a volute leak hunting clearance measuring jig comprises a bottom plate 1, a volute positioning mechanism 2, a valve opening and closing mechanism 3, a crank lifting and lowering mechanism 4, an interval detection mechanism 5, a crank deviation prevention mechanism 6 and a horizontal sliding table cylinder 7, the volute positioning mechanism 2 used for positioning the volute, the valve opening and closing mechanism 3 used for switching the valve, the interval detection mechanism 5 used for measuring the clearance between the crank and a bush, the horizontal sliding table cylinder 7 are installed on the bottom plate 1, an air hole 8 used for conveying air in the volute is formed in the volute positioning mechanism 2, and the crank lifting and lowering mechanism 4 used for lifting the crank and the crank deviation prevention mechanism 6 used for ensuring that the crank is parallel to the axis of the bush are installed on the horizontal sliding table cylinder 7.

Referring to fig. 2 and fig. 3, the volute positioning mechanism 2 includes a three-jaw chuck 21, a positioning seat 22, a rotary pressing cylinder 23, a top block 24, and a top block driving cylinder 25, the three-jaw chuck 21, the positioning seat 22, and the top block driving cylinder 25 are all fixed on the bottom plate 1, a cylinder body of the rotary pressing cylinder 23 is fixed on the positioning seat 22, an air hole 8 is formed in the positioning seat 22, and the top block 24 is fixed on a piston rod of the top block driving cylinder 25.

The valve opening and closing mechanism 3 is composed of a push rod 31, a push rod driving electric cylinder 32, a push rod 33, a push rod driving air cylinder 34 and a flat plate 35, wherein the flat plate 35 is fixed on the bottom plate 1, a cylinder body of the push rod driving electric cylinder 32 is fixed on the flat plate 35, a piston rod of the push rod driving electric cylinder 32 is connected to the push rod 31, the push rod 31 is connected to the flat plate 35 in a sliding manner, an elbow used for pushing a crank is arranged at the top end of the push rod 31, the push rod 33 used for propping a valve is fixed on the piston rod of the push rod driving air cylinder 34, and the cylinder body of the push rod driving air cylinder 34 is fixed on a sliding seat of the horizontal sliding table air cylinder 7. A pressure sensor is arranged between the piston rod of the push rod driving cylinder 34 and the push rod 33.

As shown in fig. 4, the crank lifting mechanism 4 is composed of a connecting frame 41, a lifting cylinder 42, and a lifting column 43, a cylinder body of the lifting cylinder 42 is fixed on a sliding seat of the horizontal sliding table cylinder 7, the connecting frame 41 is fixed on a piston rod of the lifting cylinder 42, the connecting frame 41 is connected on a vertical rail on the sliding seat of the horizontal sliding table cylinder 7 in a sliding manner, and the lifting column 43 for lifting a valve rod is fixed at the bottom end of the connecting frame 41. A pressure sensor is arranged between the piston rod of the lifting cylinder 42 and the connecting frame 41.

The crank deviation prevention mechanism 6 comprises an electric cylinder 61, a crank top block 62, a valve rod top block 63 and a U-shaped frame 64, wherein the U-shaped frame 64 is fixed on a piston rod of the electric cylinder 61, the crank top block 62 is fixed at the upper end of the U-shaped frame 64, the valve rod top block 63 is fixed at the lower end of the U-shaped frame 64, and a cylinder body of the electric cylinder 61 is fixed on a sliding seat of the horizontal sliding table air cylinder 7.

The pitch detection mechanism 5 is a displacement sensor.

The application mode is that, at first place the spiral case rear end at three-jaw chuck 21 location clamp tightly, the laminating of spiral case left end this moment is on positioning seat 22, and the clamp plate on the output lever of rotatory air cylinder 23 that pushes down then compresses tightly the spiral case on positioning seat 22, and the ejector pad drives the piston rod of air cylinder 25 and orders about ejector pad 24 and withstands the right-hand member of spiral case after that, has just so positioned the spiral case on detecting station.

When leakage detection is carried out on the volute, the horizontal sliding table cylinder 7 drives the crank lifting mechanism 4, the crank deviation prevention mechanism 6 and the ejector rod driving cylinder 34 to move towards the direction of the volute, and after the horizontal sliding table cylinder moves in place, the ejector rod driving cylinder 34 drives the ejector rod 33 to move towards the direction of the valve until the ejector rod 33 abuts against the valve, so that the valve is in a closed state. And finally, ventilating the interior of the volute through the air hole 8 by using a leak detector, so as to detect whether the volute leaks or not.

When the movable clearance between the crank and the bush is detected, the push rod driving cylinder 34 drives the push rod 33 to retreat and separate from the valve, then the push rod driving electric cylinder 32 drives the push rod 31 to move horizontally towards the direction of the crank, and the elbow of the push rod 31 can drive the crank to rotate for a certain angle. Then the lifting cylinder 42 drives the lifting column 43 to move upwards, the valve rod and the crank are pushed to move upwards to the top, and at the moment, the probe of the distance detection mechanism 5 (displacement sensor) moves downwards to touch the crank, so that the height of the crank at the moment is recorded. Then the jacking column 43 moves downwards to reset, so that the crank falls to the bottom, and at the moment, the probe of the spacing detection mechanism 5 moves downwards to touch the crank, so that the current height of the crank is recorded, and two high and low positions are recorded, so that the movable gap between the crank and the lining can be obtained.

Before the crank moves to the detection position to be detected, the electric cylinder 61 drives the U-shaped frame 64 to move towards the volute until the crank ejector block 62 above supports the crank, and the valve rod ejector block 63 below supports the valve rod, so that the crank and the bushing keep the axis parallel in the detection process, and the detection data can be more accurate.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a spiral case leak hunting clearance tool of surveying, characterized by, lifts mechanism (4), interval detection mechanism (5), crank and prevents inclined to one side mechanism (6), horizontal slip table cylinder (7) including bottom plate (1), spiral case positioning mechanism (2), valve closing mechanism (3), crank including lifting, install spiral case positioning mechanism (2) that are used for fixing a position the spiral case on bottom plate (1), be used for switch valve's valve closing mechanism (3), be used for measuring clearance between crank and the bush interval detection mechanism (5), horizontal slip table cylinder (7), be equipped with on spiral case positioning mechanism (2) and be used for gas transmission's gas pocket (8) in the spiral case, install on horizontal slip table cylinder (7) and be used for lifting the crank of crank and lift mechanism (4) and be used for guaranteeing crank and bush axle center parallel crank and prevent inclined to one side mechanism (6).

2. The volute leak testing and clearance testing jig of claim 1, wherein: spiral case positioning mechanism (2) include three-jaw chuck (21), positioning seat (22), rotatory air cylinder (23) that pushes down, kicking block (24), kicking block drive actuating cylinder (25) and constitute, and three-jaw chuck (21), positioning seat (22), kicking block drive actuating cylinder (25) and all fix on bottom plate (1), and the cylinder body of rotatory air cylinder (23) that pushes down is fixed on positioning seat (22), is equipped with gas pocket (8) on positioning seat (22), is fixed with kicking block (24) on the piston rod of kicking block drive actuating cylinder (25).

3. The volute leak detection and clearance measurement jig according to claim 2, wherein: valve opening and closing mechanism (3) are by push rod (31), push rod drive electric cylinder (32), ejector pin (33), ejector pin actuating cylinder (34), dull and stereotyped (35) are constituteed, dull and stereotyped (35) are fixed on bottom plate (1), the cylinder body of push rod drive electric cylinder (32) is fixed on dull and stereotyped (35), the piston rod of push rod drive electric cylinder (32) is connected on push rod (31), push rod (31) sliding fit is connected on dull and stereotyped (35), push rod (31) top is equipped with the elbow that is used for promoting the crank, be fixed with ejector pin (33) that are used for withstanding the valve on the piston rod of ejector pin actuating cylinder (34), the cylinder body that ejector pin actuating cylinder (34) was driven is fixed on the slide of horizontal slip table cylinder (7).

4. The volute leak detection and clearance measurement jig according to claim 3, wherein: the crank lifting mechanism (4) is composed of a connecting frame (41), a lifting cylinder (42) and a jacking column (43), a cylinder body of the lifting cylinder (42) is fixed on a sliding seat of the horizontal sliding table cylinder (7), the connecting frame (41) is fixed on a piston rod of the lifting cylinder (42), the connecting frame (41) is connected on a vertical rail on the sliding seat of the horizontal sliding table cylinder (7) in a sliding mode, and the jacking column (43) used for jacking valve rods is fixed at the bottom end of the connecting frame (41).

5. The volute leak testing and clearance testing jig of claim 1, wherein: the crank deviation preventing mechanism (6) is composed of an electric cylinder (61), a crank ejecting block (62), a valve rod ejecting block (63) and a U-shaped frame (64), the U-shaped frame (64) is fixed on a piston rod of the electric cylinder (61), the crank ejecting block (62) is fixed at the upper end of the U-shaped frame (64), the valve rod ejecting block (63) is fixed at the lower end of the U-shaped frame (64), and a cylinder body of the electric cylinder (61) is fixed on a sliding seat of a horizontal sliding table cylinder (7).

6. The volute leak testing and clearance testing jig of claim 1, wherein: the distance detection mechanism (5) is a displacement sensor.