CN215413507U

CN215413507U - Special tool for opening measurement

Info

Publication number: CN215413507U
Application number: CN202121879383.6U
Authority: CN
Inventors: 王佩; 黄星德; 陈明; 陈天宇; 时志能
Original assignee: Hunan Wuling Power Technology Co Ltd; Wuling Power Corp Ltd
Current assignee: Hunan Wuling Power Technology Co Ltd; Wuling Power Corp Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-04
Anticipated expiration: 2031-08-12

Abstract

The utility model provides a special tool for opening measurement, which comprises a shell, wherein a sliding groove is formed in the shell, a push rod is arranged in the sliding groove, a sliding bearing and an end cover are sleeved on the push rod, the sliding bearing is connected with the shell through the end cover, the shell, the sliding groove, the push rod, the sliding bearing and the end cover are coaxially arranged, a locking screw is arranged on the end cover, and a push block is arranged at one end, far away from the end cover, of the shell; the special tool for measuring the opening has the advantages of simple structure, convenience in operation, accurate measurement and good popularization value, and can be applied to other similar distance measurement works.

Description

Special tool for opening measurement

Technical Field

The utility model belongs to the technical field of measuring instruments, and particularly relates to a special tool for measuring an opening.

Background

The through-flow turbine is mainly applied to the scenes of low water head and large flow, has the advantages of basically unchanged water flow direction, strong flow capacity, high specific speed, small civil work load, convenience for bidirectional or reversible operation and the like, and is widely applied at home and abroad, particularly in small and medium-sized power stations and tidal power stations in plain areas.

The problem of large water guide vibration of a certain power plant unit always exists since the power plant is built, a series of possible reasons such as blade synchronism are eliminated, and the problem of large water guide vibration still exists. Through analysis, the inconsistent opening of the guide vane can cause hydraulic imbalance, thereby influencing the operation vibration of the unit. Therefore, it is necessary to measure the consistency of the opening of the guide vane and compare the measured consistency with other units so as to thoroughly check the problem of excessive vibration.

At present, the main method for measuring the opening of the guide vane is to mark and scribe the same position of each guide vane, and scribe the guide vane by using an external caliper along the line, wherein the distance between the external calipers is the minimum opening of two guide vanes along the line. However, the external calipers are used for measurement, and the problems that firstly, a power plant unit runs for many years, the surfaces of guide vanes are generally rusted seriously, the space between the guide vanes is narrow, the external calipers are difficult to operate, and secondly, the surfaces of the guide vanes are uneven, and the measurement precision of the external calipers is limited; the measurement is carried out by the outside micrometer, firstly, the precision of the outside micrometer is too high, the operation is complex, time and labor are consumed, and secondly, the large outside micrometer is heavy and has the problem of inconvenient use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a special opening measuring tool which has the advantages of simple structure, convenient operation, accurate measurement and better popularization value and can be applied to other similar distance measuring work.

In order to achieve the purpose, the special tool for measuring the opening comprises a shell, wherein a sliding groove is formed in the shell, a push rod is arranged in the sliding groove, a sliding bearing and an end cover are sleeved on the push rod, the sliding bearing is connected with the shell through the end cover, the shell, the sliding groove, the push rod, the sliding bearing and the end cover are coaxially arranged, a locking screw is arranged on the end cover, and a push block is arranged at one end, far away from the end cover, of the shell.

Preferably, the ejector rod is provided with a limiting block, and the outer diameter of the limiting block is not smaller than the inner diameter of the sliding bearing.

Preferably, a spring for driving the ejector rod to reset is arranged in the sliding groove.

Preferably, a limiting groove matched with the spring is arranged in the sliding groove.

Preferably, the device also comprises an extension bar, and two ends of the extension bar are respectively connected with the shell and the top block.

Preferably, the shell is provided with an anti-skid structure.

Preferably, the ejector rod is provided with scale marks.

Preferably, the ejector rod and the ejector block are rounded.

Preferably, the ejector rod is a stainless steel pipe, and the shell and the extension rod are aluminum alloy pipes.

Preferably, the top piece has weak magnetism.

The guide vane opening device has the advantages that when the guide vane opening device is used, the shell is held by one hand, the ejector block is abutted against one end of the guide vane opening, the ejector rod is extended to enable the ejector rod to be in contact with the other end of the guide vane opening, the ejector rod is positioned through the locking screw, and the distance between the end head of the ejector rod and the end head of the ejector block is the length of the guide vane opening.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the extension bar;

fig. 3 is a schematic structural view of the housing shown in fig. 1.

In the figure, 1, a housing; 11. a chute; 12. a top rod; 121. a limiting block; 13. a sliding bearing; 14. an end cap; 15. locking the screw; 16. a limiting groove; 2. a top block; 3. a spring; 4. lengthening a rod; 5. scale lines are marked.

Detailed Description

The technical scheme of the utility model is further described in detail by combining the drawings and the specific embodiments:

referring to fig. 1-3 together, the opening measurement special tool provided in this embodiment includes a cylindrical housing 1, a sliding groove 11 is formed in the housing 1, an ejector rod 12 is disposed in the sliding groove 11, a sliding bearing 13 and an end cover 14 are sleeved on the ejector rod 12, the sliding bearing 13 is connected to the housing 1 through the end cover 14, the housing 1, the sliding groove 11, the ejector rod 12, the sliding bearing 13 and the end cover 14 are coaxially disposed, a locking screw 15 is disposed on the end cover 14, an ejector block 2 is disposed at one end of the housing 1 away from the end cover 14, and the ejector block 2 is detachably connected to the housing 1 through a thread.

During the use, hold casing 1 on one hand, support kicking block 2 and lead the open-ended one end of stator, extension ejector pin 12 makes ejector pin 12 and the contact of the open-ended other end of stator, fixes a position ejector pin 12 through locking screw 15, and the distance of ejector pin 12 end and 2 ends of kicking block is the opening length of stator this moment, simple structure, and is easy and simple to handle, has certain measurement accuracy again, has better spreading value, can be applied to other similar interval measurement jobs.

More specifically, the ejector rod 12 is provided with a limiting block 121, the outer diameter of the limiting block 121 is not smaller than the inner diameter of the sliding bearing 13, and the limiting block 121 can prevent the ejector rod 12 from being separated from the sliding groove 11, so that the ejector rod 12 can be ensured to slide stably along the sliding groove 11.

More specifically, a spring 3 for driving the ejector rod 12 to reset is arranged in the chute 11, and the spring 3 is arranged between the limiting block 121 and the end face of the chute 11; in this embodiment, the spring 3 is disposed between the limiting block 121 and the bottom surface of the sliding groove 11, and abuts against the limiting block 121 to make the ejector rod 12 tightly attached to the opening of the guide vane; can also locate spring 3 between stopper 121 and the 11 top surfaces of spout, on ejector pin 12 was located to spring 3 cover, spring 3's one end and stopper 121's top surface were connected, and the other end is fixed on the top of spout 11, and spring 3 holds stopper 121 and makes ejector pin 12 hug closely the stator opening.

More specifically, a limiting groove 16 matched with the spring 3 is arranged in the sliding groove 11, and on one hand, the limiting groove 16 can prevent the spring 3 from moving in the sliding groove 11, so that the elastic force of the spring along 3 is ensured to be always along the axial direction, and the ejector rod 12 can stably slide; on the other hand, the limiting groove 16 can be matched with the limiting block 121 to limit the stroke of the limiting block, so that the spring 3 is prevented from being excessively extruded and deformed, and the normal use of the measuring tool is ensured.

More specifically, be equipped with spacing post on the stopper 121, spacing post is located on the bottom surface of stopper 121, and with the coaxial setting of ejector pin, and spacing post can avoid spring 3 to remove on the bottom surface of stopper 121, guarantees that the spring follows 3 elasticity along axial direction all the time, reduces stopper 121 and spout 11 friction for ejector pin 12 slides along spout 11 steadily.

More specifically, still include extension bar 4, extension bar 4's both ends are passed through the screw thread and are dismantled with casing 1 and kicking block 2 respectively and be connected, and applicable in the stator measurement of different apertures.

More specifically, the shell 1 is provided with an anti-slip structure, and the anti-slip structure may be a strip-shaped or granular concave-convex pattern, or may be a colloid anti-slip layer.

More specifically, the ejector rod 12 is provided with scale marks 5; the length of the guide vane opening can be read directly by means of the graduation marks 5.

More specifically, the ejector rod 12 and one end of the ejector block 2 principle limiting block 121 are both rounded, so that the ejector rod is convenient to take down.

More specifically, the ejector rod 12 is a stainless steel pipe; the shell 1 and the extension bar 4 are aluminum alloy tubes, so that the weight is light and convenient to operate.

More specifically, the top block 2 has weak magnetism, so that the positioning is convenient.

The above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a special tool is measured to opening which characterized in that: including casing (1), seted up spout (11) on casing (1), be equipped with ejector pin (12) in spout (11), the cover is equipped with slide bearing (13) and end cover (14) on ejector pin (12), slide bearing (13) are connected with casing (1) through end cover (14), casing (1), spout (11), ejector pin (12), slide bearing (13) and end cover (14) coaxial setting, be equipped with locking screw (15) on end cover (14), the one end that end cover (14) were kept away from in casing (1) is equipped with kicking block (2).

2. The opening measurement special tool according to claim 1, wherein: a limiting block (121) is arranged on the ejector rod (12), and the outer diameter of the limiting block (121) is not smaller than the inner diameter of the sliding bearing (13).

3. The opening measurement dedicated tool according to claim 1 or 2, characterized in that: and a spring (3) for driving the ejector rod (12) to reset is arranged in the sliding groove (11).

4. The opening measurement dedicated tool according to claim 3, wherein: and a limiting groove (16) matched with the spring (3) is arranged in the sliding groove (11).

5. The opening measurement dedicated tool according to claim 1, 2 or 4, wherein: the novel bearing is characterized by further comprising an extension bar (4), wherein the two ends of the extension bar (4) are respectively connected with the shell (1) and the jacking block (2).

6. The opening measurement dedicated tool according to claim 5, wherein: the ejector rod (12) is provided with scale marks (5).

7. The opening measurement special tool according to claim 1, wherein: and an anti-skid structure is arranged on the shell (1).

8. The opening measurement special tool according to claim 1, wherein: the ejector rod (12) and the ejector block (2) are rounded.

9. The opening measurement special tool according to claim 1, wherein: the ejector rod (12) is a stainless steel pipe, and the shell (1) and the extension rod (4) are aluminum alloy pipes.

10. The opening measurement special tool according to claim 1, wherein: the top block (2) has weak magnetism.