CN215984326U - Internal diameter measuring scale - Google Patents
Internal diameter measuring scale Download PDFInfo
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- CN215984326U CN215984326U CN202121245388.3U CN202121245388U CN215984326U CN 215984326 U CN215984326 U CN 215984326U CN 202121245388 U CN202121245388 U CN 202121245388U CN 215984326 U CN215984326 U CN 215984326U
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Abstract
The utility model discloses an inner diameter measuring scale, belongs to the technical field of inner diameter measuring equipment and solves the problem of poor adaptability of the existing measuring equipment. Comprises a central rod, a scale bracket, a sliding rod bracket and a sliding positioning rod; the scale bracket comprises a scale rod and a first positioning rod, one end of the scale rod, which is provided with the first positioning rod, and one end of the slide rod, which is provided with the second positioning rod, are hinged to the same end of the central rod, so that the first positioning rod and the second positioning rod are respectively positioned at two sides of the central rod; a vernier is sleeved on the scale rod, a sliding sleeve is sleeved on the sliding rod, and two ends of the sliding positioning rod are respectively hinged with the vernier and the sliding sleeve; the axis of the first positioning rod is perpendicular to the axis of the scale rod, the axis of the second positioning rod is perpendicular to the axis of the sliding rod, and the length of the first positioning rod is equal to that of the second positioning rod. The utility model has strong adaptability, can increase the measuring radius range by replacing the sliding positioning rod, and is convenient to measure.
Description
Technical Field
The utility model relates to the technical field of measuring equipment, in particular to an inner diameter measuring scale.
Background
The radius of transition arc needs to be measured after panel etc. is bent system transition arc to confirm the demand that makes the transition arc internal diameter of bent system accord with, current three point internal diameter measuring equipment suitability is poor, when measuring the great transition arc of internal diameter, its main scale is also longer, makes measuring equipment's whole bulky, and be not convenient for use and carry, when measuring the great transition arc of internal diameter, its main scale is also shorter, easily causes operator's reading error.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an inner diameter measuring scale, which solves the problems that the prior measuring device has poor adaptability, the main scale is longer when the transition arc with larger inner diameter is measured, the whole volume of the measuring device is large, the measuring device is inconvenient to use and carry, and the main scale is shorter when the transition arc with larger inner diameter is measured, so that the reading error of an operator is easily caused.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an internal diameter measurement ruler comprising: the device comprises a central rod, a scale bracket, a sliding rod bracket and a sliding positioning rod;
the scale support comprises a scale rod and a first positioning rod, and one end of the first positioning rod is fixedly arranged at one end of the scale rod; the sliding rod support comprises a sliding rod and a second positioning rod, and one end of the second positioning rod is fixedly arranged at one end of the sliding rod;
one end of the scale rod, which is provided with the first positioning rod, and one end of the slide rod, which is provided with the second positioning rod, are hinged to the same end of the central rod, so that the first positioning rod and the second positioning rod are respectively positioned on two sides of the central rod;
the vernier scale rod is sleeved with a vernier scale, the sliding rod is sleeved with a sliding sleeve, and two ends of the sliding positioning rod are respectively hinged with the vernier scale and the sliding sleeve;
the axis of the first positioning rod is perpendicular to the axis of the scale rod, the axis of the second positioning rod is perpendicular to the axis of the sliding rod, and the length of the first positioning rod is equal to that of the second positioning rod.
Preferably, a third roller is arranged at one end of the center rod close to the pin shaft, a first roller is arranged on the first positioning rod, and a second roller is arranged on the second positioning rod;
wherein a connecting line of the first roller axis and the third roller axis is perpendicular to the axis of the scale rod; the connecting line of the axis of the second roller and the axis of the third roller is vertical to the axis of the sliding rod;
the length of the connecting line of the first roller axis and the third roller axis, the length of the connecting line of the second roller axis and the third roller axis and the length of the sliding positioning rod are equal.
Preferably, a first mounting hole is formed in an end face, away from the third roller, of the center rod, and the first mounting hole is coaxial with the center rod;
the lead screw is rotatably arranged in the first mounting hole, a screw rod of the lead screw is coaxial with the central rod, and a nut of the lead screw is fixedly connected with the sliding positioning rod.
Preferably, one end of the screw rod, which is far away from the third roller, extends out of the first mounting hole and is fixedly connected with a handle.
Preferably, the outer wall of the central rod is provided with a guide groove along the length direction of the outer wall of the central rod, the guide groove is communicated with the first mounting hole, the nut is fixedly provided with a connecting rod, and the connecting rod penetrates out of the guide groove and is fixedly connected with the sliding positioning rod.
Preferably, one end of the central rod is provided with a pin shaft, and one end of the scale rod and one end of the sliding rod can be rotatably arranged on the pin shaft.
Preferably, the pin is coaxial with the third roller.
Preferably, a first connecting plate is arranged between the scale rod and the first positioning rod;
and a second connecting plate is arranged between the sliding rod and the second positioning rod.
Preferably, the length of the sliding locator bar is less than the length of the first locator bar.
Preferably, the length of the sliding locator bar is greater than the length of the first locator bar.
The utility model has the beneficial effects that:
the first fixing rod is perpendicular to the scale rod, the second fixing rod is perpendicular to the sliding rod, the length of the first fixing rod is equal to that of the second fixing rod, a connecting line between the two ends of the first fixing rod and the center of a transition arc is similar to a triangle enclosed by the first fixing rod and the scale rod, the sliding rod and the sliding positioning rod, and the radius of the transition arc is equal to the length measured by the scale rod after the length of the first fixing rod is divided by the length of the sliding positioning rod through a similar triangle principle; use shorter slide positioning pole for measure the radius of the great transition arc of radius, only through changing the length of slide positioning pole, can realize not unidimensional transition arc radius measurement, it is convenient to measure, adaptability is wide.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of the principle of the embodiment of the present invention.
The labels in the figure are: 1-center bar, 4-slide positioning bar, 101-screw, 102-handle, 201-scale bar, 202-first positioning bar, 203-vernier, 204-first connecting plate, 301-slide bar, 302-second positioning bar, 303-sliding sleeve, 304-second connecting plate, 501-first roller, 502-second roller, 503-third roller.
Detailed Description
The technical solutions in the present embodiments will be clearly and completely described below with reference to the accompanying drawings in the present embodiments, which, however, should not be construed as limiting the utility model to specific embodiments, but are for explanation and understanding only:
as shown in fig. 1 and 2, the present embodiment provides an inner diameter measuring ruler including a center bar 1, a ruler holder, and a slide bar holder.
The scale support comprises a scale rod 201 and a first positioning rod 202, one end of the first positioning rod 202 is fixedly installed at one end of the scale rod 201, and a first connecting plate 204 is arranged between the scale rod 201 and the first positioning rod 202 so as to enhance the deformation resistance between the scale rod 201 and the first positioning rod 202 and avoid the inaccurate measuring result caused by the change of the angle between the scale rod 201 and the first positioning rod 202 in the using process; the slide bar bracket comprises a slide bar 301 and a second positioning rod 302, the slide bar 301 and the second positioning rod 302 are provided with a second connecting plate 304, the purpose of the second connecting plate is consistent with that of the first connecting plate 204, and the first connecting plate 204 and the second connecting plate 304 can be installed in a welding mode or can be integrally formed. The axis of the first positioning rod 202 is perpendicular to the axis of the scale rod 201, so that the scale bracket is L-shaped, the axis of the second positioning rod 302 is perpendicular to the axis of the sliding rod 301, so that the sliding rod bracket is L-shaped, and the length of the first positioning rod 202 is equal to that of the second positioning rod 302.
One end of the scale rod 201 and one end of the sliding rod 301 are both hinged to the same end of the central rod 1, and the first positioning rod 202 and the second positioning rod 302 are respectively located on two sides of the central rod 1.
In this embodiment, one end of the center rod 1 is provided with a pin, and both the end connected with the scale rod 201 and the end connected with the slide rod 301 can be rotatably arranged on the pin.
The scale rod 201 and the sliding rod 301 are rotated to enable one point of each of the first positioning rod 202, the second positioning rod 302 and the central rod 1 to be in contact with the arc surface, and a circle can be determined by three points in the arc surface.
The vernier 203 has been cup jointed on the scale pole 201, is equipped with the length scale on the scale pole 201, and vernier 203 also is equipped with the scale that matches with scale pole 201, and vernier 203 is used for the accurate length value that reads, still is equipped with fastening bolt on the vernier 203 for lock vernier 203 on scale pole 201, vernier 203 slides when avoiding the reading and causes the error.
A third roller 503 is arranged at one end of the central rod 1 close to the pin shaft, a first roller 501 is arranged on the first positioning rod 202, and a second roller 502 is arranged on the second positioning rod 302; wherein, the line between the axis of the first roller 501 and the axis of the third roller 503 is perpendicular to the axis of the scale rod 201; the line between the axis of the second roller 502 and the axis of the third roller 503 is perpendicular to the axis of the sliding rod 301; the length of the line connecting the axis of the first roller 501 and the axis of the third roller 503, the length of the line connecting the axis of the second roller 502 and the axis of the third roller 503, and the length of the slide positioning rod 4 are equal. The roller is quicker at the inner wall roller of the transition arc, the measuring efficiency is improved, and the inner wall of the transition arc can not be scratched.
A first mounting hole is formed in the end face, away from the third roller 503, of the central rod 1, and is coaxial with the central rod 1; the lead screw is rotatably arranged in the first mounting hole, the screw rod 101 of the lead screw is coaxial with the central rod 1, and the nut of the lead screw is fixedly connected with the sliding positioning rod 4.
One end of the screw 101, which is far away from the third roller 503, extends to the outside of the first mounting hole and is fixedly connected with a handle 102, so that an operator can rotate the screw 101 of the screw conveniently, and the handle 102 can be rod-shaped or hexagonal nut-shaped. The handle is rotated to rotate the screw 101 to enable the nut to ascend or descend, so that the positions of the rollers can be accurately adjusted conveniently, and the measuring accuracy is improved.
The outer wall of the central rod 1 is provided with a guide groove along the length direction, the guide groove is communicated with the first mounting hole, the nut is fixedly provided with a connecting rod, the connecting rod penetrates out of the guide groove and is fixedly connected with the sliding positioning rod 4, and the axis of the sliding positioning rod 4 is vertical to the axis of the central rod.
As shown in fig. 2, A, B, C is the contact point between the second roller 502, the third roller 503 and the first roller 501 and the arc, O is the center of the transition arc, D is the point of the vernier 203 on the scale rod 201, E is the point of the sliding sleeve 303 on the sliding rod 301, DE is the length of the sliding positioning rod 4, and r is the radius of the transition arc.
CB ≠ BD, BE ═ BA, DE ═ BC ═ BA, and the sliding positioning rod 4 is DE, since Δ BDE, Δ OBC, and Δ OBA are all equal, BD ═ BE ═ OA ═ OC ═ r, and BD is the radius of the detected transition arc, that is, the radius of the transition arc can BE obtained through the reading of the vernier 203.
In the application process, the length of the sliding positioning rod 4 is increased, and the length of the sliding positioning rod 4 is larger than that of the first positioning rod 202. At this time, the positions of the vernier 203 and the sliding sleeve 303 corresponding to F and G respectively, that is, FG equals nDE, and r length equals BE/n at this time, that is, the widened lower limit of r is convenient for measuring the radius of the small-radius transition arc.
The length of the sliding positioning rod 4 is shortened, so that the length of the sliding positioning rod 4 is smaller than that of the first positioning rod 202, namely, the upper limit of r is widened, and the radius of the transition arc with the larger radius is convenient to detect.
It is to be understood that the above examples are merely illustrative for clarity of description and are not limiting on the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the utility model.
Claims (10)
1. An internal diameter measurement ruler, comprising: the device comprises a central rod, a scale bracket, a sliding rod bracket and a sliding positioning rod;
the scale support comprises a scale rod and a first positioning rod, and one end of the first positioning rod is fixedly arranged at one end of the scale rod; the sliding rod support comprises a sliding rod and a second positioning rod, and one end of the second positioning rod is fixedly arranged at one end of the sliding rod;
one end of the scale rod, which is provided with the first positioning rod, and one end of the slide rod, which is provided with the second positioning rod, are hinged to the same end of the central rod, so that the first positioning rod and the second positioning rod are respectively positioned on two sides of the central rod;
the vernier scale rod is sleeved with a vernier scale, the sliding rod is sleeved with a sliding sleeve, and two ends of the sliding positioning rod are respectively hinged with the vernier scale and the sliding sleeve;
the axis of the first positioning rod is perpendicular to the axis of the scale rod, the axis of the second positioning rod is perpendicular to the axis of the sliding rod, and the length of the first positioning rod is equal to that of the second positioning rod.
2. The inside diameter measurement ruler according to claim 1, wherein a third roller is disposed at one end of the center rod close to the pin shaft, a first roller is disposed on the first positioning rod, and a second roller is disposed on the second positioning rod;
wherein a connecting line of the first roller axis and the third roller axis is perpendicular to the axis of the scale rod; the connecting line of the axis of the second roller and the axis of the third roller is vertical to the axis of the sliding rod;
the length of a connecting line of the first roller axis and the third roller axis is equal to the length of a connecting line of the second roller axis and the third roller axis.
3. The inside diameter measurement ruler according to claim 2, wherein an end surface of the center bar, which is far away from the third roller, is provided with a first mounting hole, and the first mounting hole is coaxial with the center bar;
the lead screw is rotatably arranged in the first mounting hole, a screw rod of the lead screw is coaxial with the central rod, and a nut of the lead screw is fixedly connected with the sliding positioning rod.
4. The inside diameter measurement ruler of claim 3, wherein an end of the screw remote from the third roller extends out of the first mounting hole and is fixedly connected with a handle.
5. The inside diameter measurement ruler of claim 3, wherein the outer wall of the center rod is provided with a guide groove along the length direction thereof, the guide groove is communicated with the first mounting hole, the nut is fixedly provided with a connecting rod, and the connecting rod penetrates through the guide groove and is fixedly connected with the middle part of the sliding positioning rod.
6. The inside diameter measurement ruler according to claim 2, wherein one end of the central rod is provided with a pin, and both one end of the scale rod and one end of the slide rod are rotatably disposed on the pin.
7. The inside diameter measurement ruler of claim 6, wherein the pin is coaxial with the third roller.
8. The inside diameter measurement ruler according to claim 1, wherein a first connecting plate is provided between the scale bar and the first positioning bar;
the slide bar and the second positioning rod are provided with a second connecting plate.
9. The inside diameter measurement ruler of any one of claims 1 to 8, wherein the length of the sliding locator bar is less than the length of the first locator bar.
10. The inside diameter measurement ruler of any one of claims 1 to 8, wherein the length of the sliding locator bar is greater than the length of the first locator bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121245388.3U CN215984326U (en) | 2021-06-04 | 2021-06-04 | Internal diameter measuring scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121245388.3U CN215984326U (en) | 2021-06-04 | 2021-06-04 | Internal diameter measuring scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215984326U true CN215984326U (en) | 2022-03-08 |
Family
ID=80574892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121245388.3U Active CN215984326U (en) | 2021-06-04 | 2021-06-04 | Internal diameter measuring scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215984326U (en) |
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2021
- 2021-06-04 CN CN202121245388.3U patent/CN215984326U/en active Active
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