CN211841802U - Tool for pulling out backing plate of main water inlet valve pivot shaft sleeve - Google Patents
Tool for pulling out backing plate of main water inlet valve pivot shaft sleeve Download PDFInfo
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- CN211841802U CN211841802U CN202020450103.9U CN202020450103U CN211841802U CN 211841802 U CN211841802 U CN 211841802U CN 202020450103 U CN202020450103 U CN 202020450103U CN 211841802 U CN211841802 U CN 211841802U
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- backing plates
- special backing
- shaft sleeve
- special
- screw
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Abstract
The utility model relates to a hydroelectric power generation field, main water intaking valve pivot axle sleeve pulls out backing plate instrument promptly. The screw-type drawing machine comprises a circular ring plate, wherein inner ring threaded holes and outer ring threaded holes are formed in the circular ring plate at intervals along the circumference, the inner ring threaded holes are used for screwing an M8 screw, and the outer ring threaded holes are used for screwing an M30 square-head drawing screw; in addition, two special backing plates A and two special backing plates B are independently arranged, threaded holes screwed with the M30 square-head pulling screw rods are formed in the middles of the special backing plates A and the special backing plates B, the special backing plates A and the special backing plates B are circular, and one circular side of each special backing plate A is a straight edge. The contact area between the front surface of the screw nut of the extracting tool and the edge of the circular ring plate tool or the shaft sleeve is increased, the transmission torque value is increased, and the success rate of one-time extracting is improved. The shaft sleeve pulling-out time is shortened, and the working efficiency is improved.
Description
Technical Field
The utility model relates to a hydroelectric power generation field, main water intaking valve pivot axle sleeve pulls out backing plate instrument promptly.
Background
In the prior art, standard nuts matched with a screw rod are used when a main water inlet valve pivot shaft sleeve of a pumped storage power station is pulled out, and the appearance of each standard nut is regular hexagon, so that under the specific situation that the pivot shaft sleeve is pulled out, the contact area between the front surface of each nut and the edge of an annular tool or the edge of the annular shaft sleeve is too small, the bearing moment value is small, and if the shaft sleeve and the pivot shaft are too tight, the nuts are extremely easy to damage and even fly out to hurt; in addition, because the rectangular area of the side face of the standard nut is small, the nut is poor in stability when the tool screw rotates, the nut is easy to rotate along with the screw, the function of the nut is lost, if each nut is held by a spanner by workers, the requirements can be met only marginally, but the method is time-consuming and labor-consuming, and is not the best choice.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a tool for pulling out the base plate of the main water inlet valve pivot shaft sleeve aiming at the defects, solve the problems that the transmission torque value of the nut matched with the screw rod is small and the nut is easy to damage and fly out to hurt people in the pulling out process of the main water inlet valve pivot shaft sleeve, and ensure the safety of operators while the pulling out work is carried out smoothly; the problem of extract the in-process nut steadiness poor, waste time and energy is solved, save the labour, reach the effect that makes a lot of effort doubly.
The technical solution of the utility model is that: the tool for pulling out the base plate of the main water inlet valve pivot shaft sleeve is characterized by comprising a circular ring plate, wherein an inner ring threaded hole and an outer ring threaded hole are formed in the circular ring plate at intervals along the circumference, the inner ring threaded hole is used for screwing an M8 screw rod, and the outer ring threaded hole is used for screwing an M30 square-head pulling-out screw rod; in addition, two special backing plates A and two special backing plates B are independently arranged, threaded holes screwed with the M30 square-head pulling screw rods are formed in the middles of the special backing plates A and the special backing plates B, the special backing plates A and the special backing plates B are circular, and one circular side of each special backing plate A is a straight edge.
The utility model has the advantages that: (1) the contact area between the front surface of the screw nut of the extracting tool and the edge of the circular ring plate tool or the shaft sleeve is increased, the transmission torque value is increased, and the success rate of one-time extracting is improved.
(2) The tool screw and nut are prevented from being damaged and flying out to hurt people, and the safety of operating personnel is ensured. (3) The stability of the nut is increased when the tool screw rotates, and the effectiveness of the tool is ensured to be pulled out. (4) The shaft sleeve pulling-out time is shortened, and the working efficiency is improved. (5) The personnel investment of the shaft sleeve pulling work is reduced.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the assembly position of the special base plate a in the first stage of the use state of the present invention.
Fig. 2 is a schematic plan view of the special backing plate a.
Fig. 3 is a schematic view of the assembly position of the special backing plate B in the second stage of the use state of the present invention.
Fig. 4 is a schematic plan view of the special backing plate B.
Detailed Description
Referring to fig. 1-4, the part names are as follows: the water inlet valve comprises an M30 square-head drawn screw 2, a circular ring plate 3, an M8 screw 4, a main water inlet valve body 5, a shaft sleeve 6, a main water inlet valve pivot 7, an inner ring threaded hole 9, an outer ring threaded hole 10, a threaded hole 11, a straight edge 12, a special backing plate A13 and a special backing plate B14.
Referring to fig. 1-4, the tool for pulling out the backing plate of the main water inlet valve pivot shaft sleeve comprises a circular ring plate 3, wherein inner ring threaded holes 9 and outer ring threaded holes 10 are formed in the circular ring plate at intervals along the circumference, the inner ring threaded holes 9 are used for screwing an M8 screw rod 4 (as shown in fig. 1, at least two or more inner ring threaded holes 9 are formed in the circular ring plate), and the outer ring threaded holes 10 are used for screwing an M30 square-head pulling screw rod 2 (as shown in fig. 1, one upper threaded hole and one lower threaded hole 10; in addition, two special backing plates A and two special backing plates B are independently arranged, threaded holes 11 screwed with the M30 square-head extraction screw rods 2 are formed in the middles of the special backing plates A13 and the special backing plates B14, the special backing plates A13 and the special backing plates B14 are circular, and the circular side is a straight edge 12.
The using method comprises the following steps: the main water inlet valve pivot shaft sleeve is pulled out in two stages, wherein the first stage is the initial period of the pulling-out work of the shaft sleeve 6, and the second stage is after the shaft sleeve 6 is pulled out by 20 mm. Two special tools are invented according to actual conditions.
(1) First stage treatment
Referring to fig. 1 and 2, at this stage, the edge of the shaft sleeve 6 is tightly attached to the processing surface of the main water inlet valve body 5 without clearance, the tooling ring plate 3 can only be fixed on the shaft sleeve 6 by using the M8 screw 4, at this time, the distance between the bottom surface of the tooling ring plate 3 and the processing surface of the main water inlet valve body 5 is accurately measured by using a vernier caliper, the actual field distance is 20mm, and the distance between the outer edge of the boss at the top of the shaft sleeve 6 and the center of the M30 square-head extraction screw 2 is measured by using a steel plate ruler, and the. The measured data is used to make a special pad A13, as shown in FIG. 2. The sleeve 6 is pulled out 20mm by this tool. Firstly, fixing a circular ring plate 3 on a shaft sleeve 6 by using an M8 screw rod 4, then respectively and symmetrically inserting 2 special backing plates A13 between the circular ring plate 3 and a valve body 5, penetrating an M30 square head extraction screw rod 2 through the circular ring plate 3, screwing in the special backing plates A13, and after preparation, symmetrically rotating an M30 square head extraction screw rod 2 by using a spanner, thereby slowly extracting the shaft sleeve 6 by 20 mm. The assembly position of the special pad A13 at this stage is schematically shown in FIG. 1. The upper straight edge 12 of the special backing plate A13 limits the rotation of the special backing plate A13 when the M30 square head extraction screw rod 2 is screwed in.
(2) And (5) processing in a second stage.
Referring to fig. 3 and 4, the weakest strength in the first stage pulling-out process is the M8 screw 4 and the M8 screw hole of the copper shaft sleeve 6, the M8 screw 4 is easy to break or the M8 screw hole is easy to damage due to overlarge stress for a long time, and in order to reduce the damage risk, when the gap between the edge of the shaft sleeve 6 and the processing surface of the main water inlet valve body 5 is increased to 20mm, the distance between the outer edge of the shaft sleeve 6 and the center of the M30 square head pulling-out screw 2 is measured by a steel plate ruler, and the actual field is 56 mm. The measured data is used to produce a special pad B14, as shown in FIG. 4. The special backing plate B14 and a boss at the top of the shaft sleeve 6 are used for transmitting torque to pull out the shaft sleeve 6. After the first stage, the distance between the edge of the shaft sleeve 6 and the main water inlet valve body 5 reaches 20mm, at this time, 2 special backing plates B are symmetrically inserted between the edge of the shaft sleeve 6 and the main water inlet valve body 5, the M30 square-head extraction screw 2 penetrates through the circular ring plate 3 and is screwed into the special backing plate B14, and after the preparation is completed, the M30 square-head extraction screw 2 is symmetrically rotated by a wrench, so that the shaft sleeve 6 is slowly extracted. At this stage, the screw 4 of M8 and the screw hole of M8 are no longer stressed, and the tool pad B14 is assembled in the position shown in FIG. 3. The special shim plate A13 and the special shim plate B14 have the same structure but different diameters.
The above description is only exemplary of the present invention, and the various illustrations do not limit the essence of the present invention.
Claims (1)
1. The tool for pulling out the base plate of the main water inlet valve pivot shaft sleeve is characterized by comprising a circular ring plate (3), wherein an inner ring threaded hole (9) and an outer ring threaded hole (10) are formed in the circular ring plate at intervals along the circumference, the inner ring threaded hole (9) is used for screwing an M8 screw rod (4), and the outer ring threaded hole (10) is used for screwing an M30 square-head pulling-out screw rod (2); in addition, two special backing plates A (13) and two special backing plates B (14) are independently arranged, threaded holes (11) screwed with the M30 square-head pulling-out screw rods (2) are formed in the middles of the special backing plates A (13) and the special backing plates B (14), the special backing plates A (13) and the special backing plates B (14) are circular, and one circular side is a straight edge (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450103.9U CN211841802U (en) | 2020-04-01 | 2020-04-01 | Tool for pulling out backing plate of main water inlet valve pivot shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450103.9U CN211841802U (en) | 2020-04-01 | 2020-04-01 | Tool for pulling out backing plate of main water inlet valve pivot shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211841802U true CN211841802U (en) | 2020-11-03 |
Family
ID=73144254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020450103.9U Active CN211841802U (en) | 2020-04-01 | 2020-04-01 | Tool for pulling out backing plate of main water inlet valve pivot shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211841802U (en) |
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2020
- 2020-04-01 CN CN202020450103.9U patent/CN211841802U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220507 Address after: 100033 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: State Grid Xinyuan Group Co.,Ltd. Patentee after: FENGMAN DAM RECONSTRUCTION ENGINEERING CONSTRUCTION BUREAU OF SONGHUAJIANG HYDROPOWER Co.,Ltd. Address before: 100033 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: STATE GRID XINYUAN Co.,Ltd. Patentee before: FENGMAN DAM RECONSTRUCTION ENGINEERING CONSTRUCTION BUREAU OF SONGHUAJIANG HYDROPOWER Co.,Ltd. |
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| TR01 | Transfer of patent right |