CN215296084U - Main shaft coupling bolt elongation value measuring tool - Google Patents
Main shaft coupling bolt elongation value measuring tool Download PDFInfo
- Publication number
- CN215296084U CN215296084U CN202121722683.3U CN202121722683U CN215296084U CN 215296084 U CN215296084 U CN 215296084U CN 202121722683 U CN202121722683 U CN 202121722683U CN 215296084 U CN215296084 U CN 215296084U
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- Prior art keywords
- measuring
- coupling bolt
- percentage table
- threaded connection
- connection section
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- 230000008878 coupling Effects 0.000 title claims abstract description 47
- 238000010168 coupling process Methods 0.000 title claims abstract description 47
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 47
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a main shaft coupling bolt extension value measuring tool, including percentage table fixing base (1) of taking first threaded connection section (2), percentage table fixing base (1) one end be equipped with percentage table (4) through percentage table buckle (3), the inside through-hole that is used for settling measuring head (5) of percentage table (4) that is equipped with of percentage table fixing base (1), percentage table fixing base (1) other end be equipped with measuring head (5) lapped first measuring staff (6), first measuring staff (6) other end is equipped with second measuring staff (7) through third threaded connection section (9), second measuring staff (7) other end be equipped with second threaded connection section (8) with the internal thread connection of coupling bolt upper portion centre bore. The method can improve the measurement efficiency and ensure more accurate measurement results. The utility model discloses the structure is retrencied, the stable performance.
Description
Technical Field
The utility model relates to a measuring tool, especially a main shaft coupling bolt elongation value measuring tool.
Background
The connecting reliability of the main shaft of the hydroelectric generating set is ensured, and the main shaft coupling bolt is required to have a certain elongation when being fastened, so that the elongation value needs to be measured when the main shaft coupling bolt is disassembled and assembled during unit overhaul every time. The existing coupling bolt is fastened through a hydraulic wrench in a pressing mode, a bolt elongation value measuring tool is composed of a measuring rod and a measuring tool, the measuring rod is fixed on a lower plane of the coupling bolt before the bolt is fastened, a certain height difference is formed from an upper plane of the measuring rod to an upper plane of the coupling bolt, the height difference between the measuring rod and the coupling bolt is measured by a depth gauge, a surface difference gauge or a dial indicator before and after each pressing, and the height difference change amount before and after pressing is the elongation value of the coupling bolt. When measuring, the measuring method has the following problems: 1. because the spatial distribution position of the spindle coupling bolt is limited, a hydraulic tool on the coupling bolt needs to be disassembled and assembled when the elongation value is measured before and after each time of pressing of the hydraulic wrench, and the workload is large; 2. although the position of the measuring tool is marked during each measurement, the measurement error is reduced, the complete consistency of the measurement position at each time cannot be ensured, and the extension value measured at each time has an error because the measuring rod is fixed on the upper plane by threads and cannot be completely horizontal.
An object of the utility model is to provide a main shaft coupling bolt elongation value measuring tool. The method can improve the measurement efficiency and ensure more accurate measurement results.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a technical scheme: the utility model provides a main shaft coupling bolt extension value measuring tool, includes the percentage table fixing base of taking first threaded connection section, percentage table fixing base one end be equipped with the percentage table through the percentage table buckle, the inside through-hole that is used for settling the measuring head of percentage table that is equipped with of percentage table fixing base, the percentage table fixing base other end be equipped with the first measuring staff of measuring head overlap joint, the first measuring staff other end is equipped with the second measuring staff through third threaded connection section, the second measuring staff other end be equipped with the female connection's of coupling bolt upper portion centre bore second threaded connection section.
In the tool for measuring the elongation of the spindle coupling bolt, the port of the second threaded connection section of the second measuring rod is flush with the outer surface of the coupling bolt.
In the tool for measuring the elongation value of the spindle coupling bolt, an inner hexagon is arranged in the second threaded connection section of the second measuring rod.
In the tool for measuring the elongation value of the spindle coupling bolt, the measuring head of the dial indicator is provided with a five-millimeter compression amount through the first measuring rod.
In the tool for measuring the elongation value of the spindle coupling bolt, two semicircular clamping blocks are arranged in the middle of the dial indicator clamp, and a fastening bolt is arranged on one side of each semicircular clamping block.
Compared with the prior art, it can realize length adjustment through setting up first measuring staff and second measuring staff inside the coupling bolt, makes the utility model discloses can be applicable to more coupling bolts's measurement, first measuring staff is through the measuring head overlap joint with the percentage table to the measuring head is equipped with five millimeters's compression value, just so can change the extension value of reaction coupling bolt through the registration of percentage table, the utility model discloses structure retrencies, and stable performance is difficult for the trouble.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of a part of the structure of the present invention.
The labels in the figures are: 1-dial indicator fixing seat, 2-first threaded connection section, 3-dial indicator clamping buckle, 4-dial indicator, 5-measuring head, 6-first measuring rod, 7-second measuring rod, 8-second threaded connection section, 9-third threaded connection section, 10-inner hexagon, 11-semicircular fixture block and 12-fastening bolt.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example 1. The utility model provides a main shaft coupling bolt extension value measuring tool, constitutes as shown in figure 1-2, including taking percentage table fixing base 1 of first threaded connection section 2, 1 one end of percentage table fixing base be equipped with percentage table 4 through percentage table buckle 3, 1 inside through-hole that is used for settling measuring head 5 of percentage table 4 that is equipped with of percentage table fixing base, 1 other end of percentage table fixing base be equipped with 5 lapped first measuring staff 6 of measuring head, 6 other ends of first measuring staff are equipped with second measuring staff 7 through third threaded connection section 9, 7 other ends of second measuring staff are equipped with the second threaded connection section 8 with the internal thread connection of coupling bolt upper portion centre bore.
And the port of the second threaded connecting section 8 of the second measuring rod 7 is flush with the outer surface of the coupling bolt.
And an inner hexagon 10 is arranged in the second threaded connecting section 8 of the second measuring rod 7.
The measuring head 5 of the dial indicator 4 is provided with a five-millimeter compression amount through the first measuring rod 6.
The dial indicator clip 3 is provided with two semicircular clamping blocks 11 in the middle, and one side of each semicircular clamping block 11 is provided with a fastening bolt 12.
When the utility model is used for measuring the elongation value of the coupling bolt, the total length of the first measuring rod 6 and the second measuring rod 7 is firstly adjusted through the third threaded connection section 9, thus the utility model can be applied to more coupling bolts, when in installation, the first measuring rod 6 and the second measuring rod 7 are firstly put into the inner cavity of the coupling bolt, then the second measuring rod 7 is screwed to the upper end of the coupling bolt through the inner hexagon 10 of the second threaded connection section 8 of the second measuring rod 7, the second threaded connection section 8 is screwed into the threaded hole at the upper part of the coupling bolt, then the upper end surface of the second threaded connection section 8 and the upper end surface of the coupling bolt are in the same plane, then the dial indicator fixing seat 1 is arranged at the lower end surface of the coupling bolt through the first threaded connection section 2 of the dial indicator fixing seat 1, the fixing of the dial indicator 4 is realized through the dial indicator clamp 3, and the dial indicator 4 has the compression amount of five millimeters, 3 middle parts of percentage table clip are equipped with two semi-circular fixture blocks 11, 11 one sides of semi-circular fixture blocks are equipped with fastening bolt 12, such percentage table fixing device compare in directly setting up the vertically screw through the side, the area of contact of mounting and percentage table 4 is bigger like this, dynamics when controlling more easily and screwing up, prevent to lead to the measuring head 5 of percentage table 4 to move the difficulty because of screwing up, then at the in-process of shaft coupling bolt extension, first measuring staff 6 and second measuring staff 7 can be along with the extension of shaft coupling bolt and upward movement, the compressive capacity of measuring head 5 of percentage table 4 can diminish like this, the change of percentage table registration is exactly shaft coupling bolt extension value. The utility model discloses can show the elongation of coupling bolt in real time at coupling bolt extension in-process, reduce the dismouting work load in the measurement process to compare in the measurement mode that needs the secondary measurement and calculate, the measuring result is more accurate.
Claims (5)
1. The utility model provides a main shaft coupling bolt elongation value measuring tool which characterized in that: including percentage table fixing base (1) of taking first threaded connection section (2), percentage table fixing base (1) one end be equipped with percentage table (4) through percentage table buckle (3), percentage table fixing base (1) inside is equipped with the through-hole that is used for settling measuring head (5) of percentage table (4), percentage table fixing base (1) other end be equipped with measuring head (5) lapped first measuring staff (6), first measuring staff (6) other end is equipped with second measuring staff (7) through third threaded connection section (9), second measuring staff (7) other end be equipped with second threaded connection section (8) of the internal thread connection of shaft coupling bolt upper portion centre bore.
2. A spindle coupling bolt elongation value measuring tool as claimed in claim 1, wherein: and the port of the second threaded connection section (8) of the second measuring rod (7) is flush with the outer surface of the coupling bolt.
3. A spindle coupling bolt elongation value measuring tool as claimed in claim 1, wherein: and an inner hexagonal socket (10) is arranged in the second threaded connection section (8) of the second measuring rod (7).
4. A spindle coupling bolt elongation value measuring tool as claimed in claim 1, wherein: and a measuring head (5) of the dial indicator (4) is provided with a five-millimeter compression amount through a first measuring rod (6).
5. A spindle coupling bolt elongation value measuring tool as claimed in claim 1, wherein: the dial indicator clip (3) is provided with two semicircular clamping blocks (11) in the middle, and one side of each semicircular clamping block (11) is provided with a fastening bolt (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722683.3U CN215296084U (en) | 2021-07-27 | 2021-07-27 | Main shaft coupling bolt elongation value measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722683.3U CN215296084U (en) | 2021-07-27 | 2021-07-27 | Main shaft coupling bolt elongation value measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215296084U true CN215296084U (en) | 2021-12-24 |
Family
ID=79524862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121722683.3U Active CN215296084U (en) | 2021-07-27 | 2021-07-27 | Main shaft coupling bolt elongation value measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215296084U (en) |
-
2021
- 2021-07-27 CN CN202121722683.3U patent/CN215296084U/en active Active
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