CN211120994U - Incomplete cambered surface inner diameter measuring stop - Google Patents
Incomplete cambered surface inner diameter measuring stop Download PDFInfo
- Publication number
- CN211120994U CN211120994U CN201921947737.9U CN201921947737U CN211120994U CN 211120994 U CN211120994 U CN 211120994U CN 201921947737 U CN201921947737 U CN 201921947737U CN 211120994 U CN211120994 U CN 211120994U
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- Prior art keywords
- rod
- measuring
- ruler
- connecting rod
- measuring rod
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- Expired - Fee Related
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- 238000005259 measurement Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004441 surface measurement Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 4
- 206010066054 Dysmorphism Diseases 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses an incomplete cambered surface inner diameter measuring stopper, which comprises a central rod, a first measuring rod, a second measuring rod, a first connecting rod and a second connecting rod, wherein the first measuring rod and the second measuring rod are symmetrically arranged around the central rod; the end part of the first measuring rod and the end part of the second measuring rod are both rotatably connected with the end part of the central rod; the free end of the first measuring rod is hinged with a first connecting rod, the free end of the second measuring rod is hinged with a second connecting rod, and the free end of the first connecting rod and the free end of the second connecting rod are jointly and rotatably connected with a lantern ring; the central rod comprises a fixed part and a rotating part rotationally connected with the fixed part, the first measuring rod and the second measuring rod are hinged with the fixed part, and the lantern ring is sleeved outside the rotating part and is in threaded fit with the rotating part; the hinged end of first measuring stick and head rod to and the hinged end of second measuring stick and second connecting rod all can with the inner wall contact of the cambered surface that awaits measuring. The utility model discloses be convenient for measure the internal diameter of incomplete cambered surface.
Description
Technical Field
The utility model relates to a measuring tool field, concretely relates to incomplete cambered surface internal diameter measurement stop.
Background
The arc measuring tool in the prior art mainly comprises an inside micrometer, but the inside micrometer is mostly applied to the measurement of a whole circle, and the measurement of the incomplete arc inside micrometer is inconvenient, so that a measuring stop convenient for measuring the incomplete arc is required to be designed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a incomplete cambered surface internal diameter measurement stop, its internal diameter of being convenient for measure incomplete cambered surface.
In order to solve the technical problem, the utility model provides an incomplete cambered surface internal diameter measurement stop, including central rod, first measuring stick, second measuring stick, head rod and second connecting rod, first measuring stick and the second measuring stick about central rod symmetry sets up; the end part of the first measuring rod and the end part of the second measuring rod are both rotatably connected with the end part of the central rod; the free end of the first measuring rod is hinged with a first connecting rod, the free end of the second measuring rod is hinged with a second connecting rod, and the free end of the first connecting rod and the free end of the second connecting rod are jointly and rotatably connected with a lantern ring; the central rod comprises a fixed part and a rotating part rotationally connected with the fixed part, the first measuring rod and the second measuring rod are hinged with the fixed part, and the lantern ring is sleeved outside the rotating part and is in threaded fit with the rotating part; the first measuring rod and the hinged end of the first connecting rod, and the second measuring rod and the hinged end of the second connecting rod can be in contact with the inner wall of the cambered surface to be measured.
Further, the incomplete arc surface inner diameter measuring stop further comprises a linkage ruler, and two end parts of the linkage ruler are respectively hinged with the free end of the first measuring rod and the free end of the second measuring rod; the linkage ruler comprises a main ruler and an auxiliary ruler which is connected with the main ruler in a sliding mode, and scales are arranged on the main ruler and the auxiliary ruler; the central rod is provided with a sliding groove in a penetrating manner along the radial direction of the central rod, and the sliding groove extends along the axial direction of the central rod; both ends of the linkage ruler can be in contact with the measuring arc surface, and the linkage ruler penetrates through the sliding groove and can slide in the sliding groove.
Furthermore, both ends of linkage chi all rotate and are connected with and touch the ball, touch the centre of sphere of ball with the end rotation of linkage chi is connected, touch the ball can with measure the cambered surface contact.
Furthermore, a fastener capable of being abutted against the auxiliary ruler is arranged on the main ruler in a penetrating mode, so that the main ruler and the auxiliary ruler are relatively fixed.
Furthermore, a clamping column is fixed at the hinged end of the central rod and is positioned at the centers of the first measuring rod and the second measuring rod; the clamping column is detachably connected with an angle measuring stopper so as to measure the rotating angle of the first measuring rod and the second measuring rod relative to the central rod.
Furthermore, the upper surface of joint post is provided with the dysmorphism piece, set up on the angle measurement stop with dysmorphism piece complex draw-in groove.
Furthermore, a plurality of balls are embedded in the sliding groove, so that resistance of the linkage ruler during movement is reduced.
Furthermore, the hinged end of the center rod is arranged in an arc shape.
The utility model has the advantages that:
in the measured in-process, thereby rotate the rotating part and drive the axial motion of head rod and second connecting rod along the rotating part through the lantern ring, drive first measuring stick through the head rod, the second connecting rod drives the motion of second measuring stick, make first measuring stick and second measuring stick rotate for the fixed part, until first measuring stick and head rod, and second measuring stick and second connecting rod all laminate with the inner wall of the cambered surface that awaits measuring, thereby can pass through the length of first measuring stick and second measuring stick, and confirm the chord length of the cambered surface that awaits measuring for well core rod pivoted angle.
Drawings
Fig. 1 is an overall schematic view of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
The reference numbers in the figures illustrate: 1. a center pole; 11. a fixed part; 12. a rotating part; 13. a chute; 131. a ball bearing; 14. a clamping column; 141. a shaped block; 15. an angle measurement stop; 2. a first measuring rod; 21. a first connecting rod; 3. a second measuring rod; 31. a second connecting rod; 4. a collar; 5. a linkage ruler; 51. a main scale; 52. a secondary ruler; 53. contacting the ball; 54. a fastener; 6. and (6) measuring the cambered surface to be measured.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1, the utility model discloses an incomplete cambered surface internal diameter measurement stop, including well core rod 1, first measuring stick 2, second measuring stick 3, head rod 21 and second connecting rod 31, first measuring stick 2 and second measuring stick 3 are located well core rod 1's both sides respectively to set up about well core rod 1 symmetry, the tip of first measuring stick 2 and the tip of second measuring stick 3 all are connected with well core rod 1's tip rotation.
Referring to fig. 1 and 2, the free end of the first measuring rod 2 is hinged to a first connecting rod 21, the free end of the second measuring rod 3 is hinged to a second connecting rod 31, the free end of the first connecting rod 21 and the free end of the second connecting rod 31 are connected together to form a sleeve ring 4, and the first connecting rod 21 and the second connecting rod 31 are both hinged to the sleeve ring 4. The center rod 1 includes a fixed portion 11 and a rotating portion 12, and the rotating portion 12 is rotatable around the axial direction thereof. The tip of first measuring stick 2 and the tip of second measuring stick 3 all are articulated with fixed part 11, and simultaneously, lantern ring 4 cover is established in the outside of rotating part 12 to lantern ring 4 and rotating part 12 screw-thread fit. In the measuring process, thereby rotate the rotating part 12 and drive the axial motion of first connecting rod 21 and second connecting rod 31 along rotating part 12 through lantern ring 4, drive first measuring stick 2 through first connecting rod 21, second connecting rod 31 drives the motion of second measuring stick 3, make first measuring stick 2 and second measuring stick 3 rotate for fixed part 11, until first measuring stick 2 and first connecting rod 21, and second measuring stick 3 and second connecting rod 31 all laminate with the inner wall of cambered surface 6 that awaits measuring, thereby can pass through the length of first measuring stick 2 and second measuring stick 3, and confirm the chord length of cambered surface 6 that awaits measuring for well core rod 1 pivoted angle.
Referring to fig. 1 and 2, the incomplete arc inner diameter measurement stopper further comprises a linkage ruler 5, two ends of the linkage ruler 5 are respectively rotatably connected with the free end of the first measuring rod 2 and the free end of the second measuring rod 3, and the linkage ruler 5 comprises a main ruler 51 and an auxiliary ruler 52 penetrating through the main ruler 51. In the measuring process, first measuring stick 2 and second measuring stick 3 all rotate around the pin joint to drive linkage chi 5 motion, because linkage chi 5 includes main scale 51 and can be for the vice chi 52 of main scale 51 motion, therefore the both ends homoenergetic of linkage chi 5 can with the inner wall contact of cambered surface 6 that awaits measuring, all is provided with the scale on main scale 51 and the vice chi 52, therefore can confirm the chord length that cambered surface 6 that awaits measuring corresponds through the reading of linkage chi 5.
Referring to fig. 1, well core rod 1's hinged end is the arc setting, because well core rod 1's tip and linkage chi 5's both ends all contact with the inner wall of cambered surface 6 that awaits measuring when measuring, therefore well core rod 1's tip is the arc setting and can increases well core rod 1 and the area of contact of cambered surface 6 that awaits measuring to reduce measuring error, improve measuring result's accuracy. In addition, both ends of the linkage ruler 5 are rotatably connected with contact balls 53, and the centers of the two contact balls 53 are connected with both ends of the linkage ruler 5 through rotating shafts. Two touch balls 53 all can with the inner wall contact of cambered surface 6 that awaits measuring at the in-process of measuring, can enough increase linkage chi 5 and cambered surface 6's that awaits measuring area, resistance when also can reducing first measuring stick 2 and the motion of second measuring stick 3. Meanwhile, the chord length of the cambered surface 6 to be measured is the sum of the reading of the linkage ruler 5 and the diameter of one contact ball 53.
Referring to fig. 1, when first measuring stick 2 and second measuring stick 3 rotate for well core rod 1, can drive linkage chi 5 and remove along its axial direction of perpendicular to, therefore well core rod 1 has seted up spout 13 along its radial run-through, and above-mentioned linkage chi 5 can wear to establish spout 13. The slide groove 13 is formed to extend in the axial direction of the center rod 1, and therefore the link scale 5 inserted into the slide groove 13 can move in the slide groove 13 according to the rotation angle of the first measuring rod 2 and the second measuring rod 3. The length of the slot 13 thus limits the distance that the linkage 5 can be moved, and thus the angle of rotation of the first measuring rod 2 and the second measuring rod 3.
Referring to fig. 1, a plurality of balls 131 are embedded in the sliding groove 13, and when the linkage ruler 5 moves in the sliding groove 13, the balls 131 can convert sliding friction between the linkage ruler 5 and the sliding groove 13 into rolling friction between the linkage ruler 5 and the balls 131, so that resistance to movement of the linkage ruler 5 can be reduced.
Referring to fig. 1 and 2, the end of the central rod 1 close to the hinge point is provided with a clamping column 14, and the clamping column 14 is located in the middle of the first measuring rod 2 and the second measuring rod 3. The clamping column 14 is detachably connected with an angle measuring stopper 15, and because the clamping column 14 is located in the middle of the first measuring rod 2 and the second measuring rod 3, and the first measuring rod 2 and the second measuring rod 3 are symmetrically arranged, the angle measuring stopper 15 is used for conveniently measuring the rotating angles of the first measuring rod 2 and the second measuring rod 3.
Referring to fig. 1, the upper surface of the clamping column 14 is provided with a special-shaped block 141, and the angle measuring stopper 15 is provided with a clamping groove matched with the special-shaped block 141, so that the rotation of the angle measuring stopper 15 can be reduced by matching the clamping groove with the special-shaped block 141, and the accuracy of the rotation angle of the first measuring rod 2 and the second measuring rod 3 is improved.
Referring to fig. 1, a fastener 54 capable of abutting against the sub-scale 52 is inserted into the main scale 51, and the main scale 51 and the sub-scale 52 are fixed by the fastener 54 so as to facilitate reading.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. A stop for measuring the inner diameter of an incomplete cambered surface is characterized by comprising a central rod, a first measuring rod, a second measuring rod, a first connecting rod and a second connecting rod, wherein the first measuring rod and the second measuring rod are symmetrically arranged relative to the central rod; the end part of the first measuring rod and the end part of the second measuring rod are both rotatably connected with the end part of the central rod; the free end of the first measuring rod is hinged with a first connecting rod, the free end of the second measuring rod is hinged with a second connecting rod, and the free end of the first connecting rod and the free end of the second connecting rod are jointly and rotatably connected with a lantern ring; the central rod comprises a fixed part and a rotating part rotationally connected with the fixed part, the first measuring rod and the second measuring rod are hinged with the fixed part, and the lantern ring is sleeved outside the rotating part and is in threaded fit with the rotating part; the first measuring rod and the hinged end of the first connecting rod, and the second measuring rod and the hinged end of the second connecting rod can be in contact with the inner wall of the cambered surface to be measured.
2. The incomplete arc inner diameter measurement stop of claim 1, further comprising a linkage ruler, wherein two ends of the linkage ruler are respectively hinged to the free end of the first measuring rod and the free end of the second measuring rod; the linkage ruler comprises a main ruler and an auxiliary ruler which is connected with the main ruler in a sliding mode, and scales are arranged on the main ruler and the auxiliary ruler; the central rod is provided with a sliding groove in a penetrating manner along the radial direction of the central rod, and the sliding groove extends along the axial direction of the central rod; both ends of the linkage ruler can be in contact with the measuring arc surface, and the linkage ruler penetrates through the sliding groove and can slide in the sliding groove.
3. The incomplete arc inner diameter measurement stop according to claim 2, wherein the two ends of the linkage ruler are rotatably connected with contact balls, the center of the contact ball is rotatably connected with the ends of the linkage ruler, and the contact ball can contact with the measurement arc surface.
4. The incomplete inner diameter of cambered surface measurement stop of claim 2, wherein a fastener capable of abutting against the auxiliary ruler is arranged on the main ruler in a penetrating way so as to relatively fix the main ruler and the auxiliary ruler.
5. The incomplete arc inner diameter measurement stopper of claim 1, wherein a clamping column is fixed on the hinged end of the central rod, and the clamping column is positioned at the center of the first measuring rod and the second measuring rod; the clamping column is detachably connected with an angle measuring stopper so as to measure the rotating angle of the first measuring rod and the second measuring rod relative to the central rod.
6. The incomplete arc inner diameter measuring stop of claim 5, wherein a special-shaped block is arranged on the upper surface of the clamping column, and a clamping groove matched with the special-shaped block is formed in the angle measuring stop.
7. The incomplete arc inner diameter measuring stopper of claim 2, wherein a plurality of balls are embedded in the sliding groove to reduce the resistance of the linkage ruler during movement.
8. The incomplete inside diameter cambered surface measurement stop of claim 1, wherein the hinged end of the central rod is arcuately disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947737.9U CN211120994U (en) | 2019-11-12 | 2019-11-12 | Incomplete cambered surface inner diameter measuring stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947737.9U CN211120994U (en) | 2019-11-12 | 2019-11-12 | Incomplete cambered surface inner diameter measuring stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211120994U true CN211120994U (en) | 2020-07-28 |
Family
ID=71694540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921947737.9U Expired - Fee Related CN211120994U (en) | 2019-11-12 | 2019-11-12 | Incomplete cambered surface inner diameter measuring stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211120994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551582A (en) * | 2021-07-16 | 2021-10-26 | 钱源 | Metering type electric power large-diameter pipeline inner diameter measuring device |
-
2019
- 2019-11-12 CN CN201921947737.9U patent/CN211120994U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551582A (en) * | 2021-07-16 | 2021-10-26 | 钱源 | Metering type electric power large-diameter pipeline inner diameter measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 |