CN214374860U - Speed measuring disc and speed measuring device - Google Patents

Abstract

The utility model belongs to the technical field of photoelectric measurement, concretely relates to speed measuring disc and speed sensor. The utility model provides a dish of testing speed includes annular disk body, be equipped with the bolt hole on the inner peripheral surface of the radial inboard of disk body, the disk body includes first half dish and second half dish, first half dish with second half dish surrounds into the disk body. Through using the dish that tests the speed among this technical scheme, divide into first half dish and second half dish with the disk body, can carry out split type installation through the bolt hole, the great unable problem of installing of shafting both ends flange face can be solved in split type setting, has still avoided the condition that changes shafting length simultaneously.

Description

Speed measuring disc and speed measuring device

Technical Field

The utility model belongs to the technical field of photoelectric measurement, concretely relates to speed measuring disc and speed sensor.

Background

In the practical engineering, when the rotating speed at a certain position of a shaft system is tested to fluctuate, the radial space is limited, the test position is close to the outlet of a fan, the wind power is large, and the common method cannot be applied. The speed measuring disc device needs to be installed at one end of a shaft system, the shaft system with the large flanges at two ends cannot be installed, and meanwhile, when rotating speed fluctuation at a certain position of the shaft system is tested in engineering practice, radial space is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the limited problem in current speed measuring dish installation space at least. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a dish tests speed, including annular disk body, be equipped with the bolt hole on the inner peripheral surface of the radial inboard of disk body, the disk body includes first half dish and second half dish, first half dish with second half dish surrounds into the disk body.

Through using the dish that tests the speed among this technical scheme, divide into first half dish and second half dish with the disk body, can carry out split type installation through the bolt hole, the great unable problem of installing of shafting both ends flange face can be solved in split type setting, has still avoided the condition that changes shafting length simultaneously.

In addition, according to the utility model discloses a speed measuring disc still can have following additional technical characterstic:

the utility model discloses an in some embodiments, the disk body includes the fixed part and tests the speed the portion, the fixed part is located the radial inboard of the portion of testing the speed.

In some embodiments of the present invention, the bolt hole is a plurality of, the bolt hole is all provided on the fixing portion, and each of the bolt holes is provided along a circumferential interval of the fixing portion.

The utility model discloses an in some embodiments, the circumference that tests the speed portion is equipped with the annular structure, the annular structure is located the top that tests the speed portion.

The utility model discloses an in some embodiments, first half dish is equipped with first terminal surface, second half dish is equipped with the second terminal surface, first terminal surface with the cooperation of second terminal surface butt.

In some embodiments of the present invention, the first end surface includes a first cut section, a second cut section, and a third cut section, both sides of the second cut section are respectively connected with the first cut section and the third cut section.

In some embodiments of the present invention, the first notch section and the third notch section are along the circumferentially staggered arrangement of the speed measuring disk.

In some embodiments of the invention, the second cut section is arranged along a circumferential direction of the speed measuring disk.

In some embodiments of the present invention, the second notch section is circumferentially identical to the outer circumference of the fixing portion.

The utility model also provides a testing arrangement, this testing arrangement includes the dish that tests the speed among the above-mentioned embodiment.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows an assembly structure diagram of a speed measuring disc and a zebra stripe according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the tachometer disk of FIG. 1;

FIG. 3 is a schematic bottom view of the tachometer disk of FIG. 1;

fig. 4 is a sectional view of the front view of the tachometer disk of fig. 1.

10: disk body, 11: first half, 12: second half-disc, 13: fixing part, 131: bolt hole, 14: speed measurement unit, 141: ring groove structure, 15: first end surface, 151: first notch section, 152: second cut segment, 153: third cut segment, 16: a second end face;

20: zebra stripe.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows an assembly structure diagram of a speed measuring disc and a zebra stripe according to an embodiment of the present invention. Fig. 2 is a schematic top view of the tachometer disk of fig. 1. As shown in fig. 1 and 2, the utility model provides a speed measuring disc and testing device. The utility model provides a test the speed and coil the disk and include annular disk body 10, be equipped with bolt hole 131 on the inner peripheral surface of the radial inboard of disk body 10, disk body 10 includes first half dish 11 and second half dish 12, and first half dish 11 and second half dish 12 surround into disk body 10.

Through using the dish that tests the speed among this technical scheme, be divided into first half dish 11 and second half dish 12 with disk body 10, can carry out split type installation through bolt hole 131, the great unable problem of installing of shafting both ends flange face can be solved in split type setting, has still avoided the condition that changes shafting length simultaneously.

Further, in the present embodiment, as shown in fig. 4, the tray body 10 includes the fixing portion 13 and the speed measuring portion 14, and the fixing portion 13 is located radially inside the speed measuring portion 14. The fixing part 13 is used for fixing the disk body 10 on a shaft system with large flanges at two ends, and is convenient to mount. The speed measuring part 14 is used for measuring the speed of the element to be measured in cooperation with the zebra stripes 20.

Specifically, in the present embodiment, as shown in fig. 3, the number of bolt holes 131 is multiple, the plurality of bolt holes 131 are all disposed on the fixing portion 13, and the bolt holes are disposed at intervals along the circumferential direction of the fixing portion, so that the tray 10 can be more stably fixed on the matched fixing member, and the reliability is improved.

Specifically, in the present embodiment, as shown in fig. 2, the annular groove structure 141 is provided in the circumferential direction of the speed measuring part 14, and the annular groove structure 141 is located at the top end of the speed measuring part 14. The ring groove structure 141 is used for installing the ring-shaped zebra stripes 20, and the manufactured ring-shaped zebra stripes 20 are pasted inside the groove body along the edge of the ring groove structure 141, wherein the inner and outer diameter sizes of the ring-shaped zebra stripes 20 are equal to the inner and outer diameter sizes of the ring groove structure 141. The ring groove structure 141 on the device can limit the pasting position of the zebra stripes 20, ensure the roundness of installation and simultaneously avoid the problem of the edge warping of the zebra stripes 20 caused by pasting problems. In other embodiments, the ring groove structure 141 may also be located at the bottom end of the speed measuring portion 14 or other positions, and may be matched with the zebra stripes 20 to perform the speed measuring operation.

Further, in the present embodiment, as shown in fig. 2 and 3, the first half disc 11 is provided with a first end surface, the second half disc 12 is provided with a second end surface, and the first end surface and the second end surface are in abutting engagement. The disc body 10 is in butt joint with the first end face 15 and the second end face 16, so that the disc body 10 is of a split structure, the problem that flange faces at two ends of a shaft system are large and cannot be installed is solved in the installation process, and the condition that the shaft system is too long to cause assembly failure is avoided.

Specifically, in the present embodiment, the first end surface 15 includes a first slit section 151, a second slit section 152, and a third slit section 153, and both sides of the second slit section 152 are connected to the first slit section 151 and the third slit section 153, respectively. A plurality of incision sections can make two ordinary disk bodies carry out not equidirectional terminal surface location when the cooperation, have promoted half disk body location's accuracy.

Specifically, in this embodiment, the first notch section 151 and the third notch section 153 are arranged in a staggered manner along the circumferential direction of the speed measuring disk, so that circumferential positioning of the two disk bodies 10 can be realized, and the positioning accuracy is improved.

In particular, in the present embodiment, the second notch section 152 is disposed along the circumferential direction of the speed measuring disk, so that the radial positioning of the two disk bodies 10 can be realized, and the positioning accuracy is further improved.

Specifically, in this embodiment, the second notch section 152 is circumferentially consistent with the outer circle of the fixing portion 13, so that the processing is convenient, and meanwhile, the bolt mounting area is not involved, and the convenience is improved.

Further, in this embodiment, the test procedure of the velocity measuring disk is as follows: the first half disc 11 is loosely mounted on a shaft flange to be tested through bolt holes 131 by bolts, then the second half disc 12 is aligned to form an integral disc body 10 according to the positions of the first end face 15 and the second end face 16, then the bolts are screwed, the manufactured annular zebra stripes 20 are pasted to the inside along the edge of the annular groove structure 141, and finally the positions of the laser sensor probe and the annular zebra stripes 20 are adjusted to perform rotation speed fluctuation testing.

The utility model also provides a testing arrangement, including the dish that tests the speed more than.

Through using the testing arrangement among this technical scheme, be divided into first half dish and second half dish with the disk body, can carry out split type installation through the bolt hole, the great unable problem of installing of shafting both ends flange face can be solved in split type setting, has still avoided the condition that changes shafting length simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A speed measuring disc is characterized by comprising an annular disc body, wherein bolt holes are formed in the inner circumferential surface of the radial inner side of the disc body, the disc body comprises a first half disc and a second half disc, and the disc body is surrounded by the first half disc and the second half disc;

the disk body includes the fixed part and tests the speed the portion, the fixed part is located test the speed the radial inboard of portion.

2. The tachometer disc of claim 1, wherein the bolt hole is plural, plural bolt holes are provided in the fixing portion, and the bolt holes are arranged at intervals in a circumferential direction of the fixing portion.

3. A tachometer disk according to claim 1 wherein the tachometer portion is circumferentially provided with a circumferential groove structure located at the top end of the tachometer portion.

4. A tachometer disc as claimed in claim 1, wherein the first half disc is provided with a first end face and the second half disc is provided with a second end face, the first and second end faces being in abutting engagement.

5. A tachometer disk according to claim 4, wherein the first end face comprises a first cut out section, a second cut out section and a third cut out section, the second cut out section being connected on either side to the first cut out section and the third cut out section respectively.

6. A tachometer disk according to claim 5, wherein the first and third cut-out segments are staggered in the circumferential direction of the tachometer disk.

7. A tachometer disk according to claim 5, wherein the second cut-out section is provided circumferentially of the tachometer disk.

8. A tachometer disc according to claim 7 wherein the second cut-out section is circumferentially coincident with the outer circumference of the fixed part.

9. A tachometer device having a tachometer disc according to any of claims 1 to 8.

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