CN210426367U - Device for measuring radius height of crankshaft bearing bush of engine - Google Patents
Device for measuring radius height of crankshaft bearing bush of engine Download PDFInfo
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- CN210426367U CN210426367U CN201921472087.7U CN201921472087U CN210426367U CN 210426367 U CN210426367 U CN 210426367U CN 201921472087 U CN201921472087 U CN 201921472087U CN 210426367 U CN210426367 U CN 210426367U
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- guide post
- bearing bush
- radius height
- semicircular groove
- dial indicator
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Abstract
The utility model discloses a measuring device of bent axle bush radius height of engine. This measuring device of bent axle bush radius height includes: a bearing bush radius height measuring seat; the outer diameter of an opening of the standard calibration tile in a free state is larger than the diameter of the semicircular groove; the limiting block is arranged at the limiting block mounting position and extends into the semicircular groove; a compression assembly, comprising: the guide post is vertically fixed on the pressurizing assembly mounting position through one end of the guide post, the sliding sleeve can be movably sleeved on the guide post, the bottom end of the sliding sleeve is provided with a guide post limiting part, and the guide post limiting part can extend into the semicircular groove; and a measurement assembly comprising: a first dial indicator and a second dial indicator. The device for measuring the radius height of the crankshaft bearing bush of the engine adopts a single-side pressurization double-side measurement method, so that the measurement accuracy is improved, and the assembly quality of the crankshaft is further improved.
Description
Technical Field
The utility model relates to an engine field especially relates to a measuring device of bent axle bush radius height of engine.
Background
The crankshaft is the most important component in the engine. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly and balance well.
The crankshaft is rotatably arranged in the cylinder body through the bearing bush, the radius height processing is an important process for processing the bearing bush, the poor fit between the bearing bush and the seat hole can be caused due to insufficient radius height, and the bearing bush rotates along with the rotation; too large radius can cause the bush mouth to contract inwards, and the bearing bush is worn eccentrically, directly influences the assembly quality of bent axle. And the detection of high radius is an important means for detecting whether the machined product meets the design requirements of the drawing. Currently, a single-side measurement method is generally used, namely a dial indicator is used for measurement, and the measurement method has large error.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a measuring device of bent axle bush radius height of engine that simple structure is reasonable, the measuring device of bent axle bush radius height of this engine has improved the measuring accuracy, and then has improved the assembly quality of bent axle.
In order to achieve the above object, the utility model provides a measuring device of bent axle bush radius height of engine, include: the bearing bush radius height measuring seat is provided with a semicircular groove; the two sides of the semicircular groove are respectively provided with a limiting block mounting position and a pressurizing assembly mounting position; the outer diameter of an opening of the standard calibration tile in a free state is larger than the diameter of the semicircular groove; the limiting block is arranged at the limiting block mounting position and extends into the semicircular groove; a compression assembly, comprising: the guide post is vertically fixed on the pressurizing assembly mounting position through one end of the guide post, the sliding sleeve can be movably sleeved on the guide post, the bottom end of the sliding sleeve is provided with a guide post limiting part, and the guide post limiting part can extend into the semicircular groove; and a measurement assembly comprising: the first dial indicator and the second dial indicator are arranged above one end of a standard correcting bush or a measured bearing bush which is placed in the bearing bush radius height measuring seat; and the second dial indicator is arranged above the other end of the standard correcting bush or the measured bearing bush which is placed in the bearing bush radius height measuring seat.
In a preferred embodiment, the standard proof tile is made of a die steel material.
In a preferred embodiment, the sliding sleeve is in threaded engagement with the guide post.
In a preferred embodiment, the first dial indicator is arranged above one end of the standard correcting tile or the measured bearing tile placed in the bearing bush radius height measuring seat in an adjustable mode, and the second dial indicator is arranged above the other end of the standard correcting tile or the measured bearing tile placed in the bearing bush radius height measuring seat in an adjustable mode.
In a preferred embodiment, the first dial indicator and the second dial indicator are digital display dial indicators.
Compared with the prior art, according to the utility model discloses a measuring device of bent axle bush radius height of engine has following beneficial effect: the device for measuring the radius height of the crankshaft bearing bush of the engine adopts a single-side pressurization double-side measurement method, so that the measurement accuracy is improved, and the assembly quality of the crankshaft is further improved.
Drawings
Fig. 1 is a schematic structural view of a device for measuring a height of a radius of a crankshaft bush of an engine according to a first embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, the specific structure of the device for measuring the radius height of the crankshaft bearing shell of the engine according to the preferred embodiment of the present invention includes: the device comprises a bearing bush radius height measuring seat 2, a limiting block 3, a pressurizing assembly, a measuring assembly and a standard correcting bush. Wherein, axle bush radius height measurement seat 2 has semicircular groove, stopper 3, the both ends at semicircular groove are laid respectively to the pressure components, stopper 3 below in axle bush radius height measurement seat 2 is put into to standard school tile one end, then the pressure components pushes down another end of standard school tile, make standard school tile fix in semicircular groove under certain pressure (imitate the bearing bush the stress state in the engine), laminate mutually with semicircular groove face and carry out measuring component's counterpoint, then the rethread measuring component is from two-sided measuring crankshaft bearing bush radius height, measuring accuracy has been improved, and then the assembly quality of bent axle has been improved.
Specifically, the bush radius height measuring mount 2 has a semicircular recess for receiving the standard calibration bush and the measured bearing bush 1. The two sides of the semicircular groove are respectively provided with a limiting block mounting position and a pressurizing assembly mounting position.
The standard correcting tile is in a semicircular arc shape, the outer surface of the standard correcting tile is attached to the surface of the semicircular groove, and the outer diameter of the opening of the standard correcting tile is larger than the diameter of the semicircular groove in a free state. The standard proofreading tile with the structure is closer to the actual state of the bearing bush to be measured, has a certain elastic expansion amount, and even if the inner wall of the bearing bush radius height measuring seat 2 is abraded in a certain degree, the outer wall of the standard proofreading tile can be tightly attached to the bearing bush radius height measuring seat, so that the zero position of the micrometer is accurately proofread, and the measuring precision of the bearing bush is ensured.
Preferably, the standard proof tile is made of die steel materials and has high fatigue resistance.
The limiting block 3 is arranged at a limiting block mounting position of a semicircular groove of the bearing bush radius height measuring seat 2, and the inner end of the limiting block extends into the semicircular groove and is used for limiting one end of a standard correcting bush or a measured bearing bush 1 which is placed in the bearing bush radius height measuring seat 2.
The pressurization subassembly includes: guide pillar 4 and sliding sleeve 5, wherein, guide pillar 4 is fixed at the semi-circular groove's of axle bush radius height measurement seat 2 pressurization subassembly installation position through its one end is vertical, and the cover that sliding sleeve 5 can remove is established on guide pillar 4, and the bottom of sliding sleeve 5 has the spacing portion of guide pillar, and this spacing portion of guide pillar can stretch into semi-circular groove for the standard proofreading tile or the another of being surveyed axle bush 1 of putting into axle bush radius height measurement seat 2 pressurizes.
Preferably, the sliding sleeve 5 is matched with the guide post 4 in a threaded manner.
The measuring assembly comprises a first dial indicator 6 and a second dial indicator 7, wherein the first dial indicator 6 is arranged above one end of a standard correcting tile or a measured bearing bush 1 placed in a bearing bush radius height measuring seat, the measured height value is △ h1, the second dial indicator 7 is arranged above the other end of the standard correcting tile or the measured bearing bush 1 placed in the bearing bush radius height measuring seat, the measured height value is △ h2., the measuring device for the crankshaft bearing bush radius height of the engine adopts a single-side pressurizing double-side measuring method, two half planes of the measured bearing bush are measured simultaneously, and the measured height value △ h is △ h1+ △ h 2.
Preferably, the first dial indicator 6 is arranged above one end of the standard correcting tile or the measured bearing tile 1 placed in the bearing bush radius height measuring seat in a height-adjustable manner, and the second dial indicator 7 is arranged above the other end of the standard correcting tile or the measured bearing tile 1 placed in the bearing bush radius height measuring seat in a height-adjustable manner.
Preferably, the first dial indicator 6 and the second dial indicator 7 are digital display dial indicators, and the minimum data display value is 0.001 mm.
When the bearing bush radius height measuring device measures the bearing bush radius height, firstly, the measurement assembly is subjected to zero position comparison, and the steps are as follows: 1) one end of a standard proofreading tile is placed below a limiting block 3 in a bearing bush radius height measuring seat 2, then a pressurizing assembly presses the other end of the standard proofreading tile, and the pressurizing assembly pressurizes the other end of the standard proofreading tile placed in the bearing bush radius height measuring seat 2, so that the standard proofreading tile is fixed in a semicircular groove under certain pressure (simulating the stress state of the bearing bush in an engine) and is attached to the surface of the semicircular groove; 2) placing the bearing bush radius height measuring seat 2 under a measuring assembly, and enabling probes of two dial indicators to point on two half planes of a standard calibration bush; 3) observing the reading of the dial indicator; 4) adjusting the height of the dial indicator to ensure that the upper part and the lower part of the dial indicator have certain measurement allowance; 5) rotating the shell of the dial indicator to enable the pointer of the dial indicator to return to zero; 6) and (5) moving away the pressurizing assembly, taking out the standard calibration tile, and completing the zero calibration of the dial indicator. At this time, the bearing bush to be measured can be placed in the bearing bush radius height measuring seat, and the steps 1) to 3) are repeated to complete the radius height measurement of the bearing bush to be measured. After a period of measurement, the method can be repeated again, and the dial indicator is subjected to zero position verification again.
In conclusion, the device for measuring the radius height of the crankshaft bearing bush of the engine adopts a single-side pressurization double-side measurement method, so that the measurement accuracy is improved, and the assembly quality of the crankshaft is further improved.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A device for measuring the radius height of a crankshaft bearing shell of an engine is characterized by comprising:
the bearing bush radius height measuring seat is provided with a semicircular groove; the two sides of the semicircular groove are respectively provided with a limiting block mounting position and a pressurizing assembly mounting position;
the outer diameter of an opening of the standard calibration tile in a free state is larger than the diameter of the semicircular groove;
the limiting block is arranged at the limiting block mounting position and extends into the semicircular groove;
a compression assembly, comprising: the guide post is vertically fixed on the pressurizing assembly mounting position through one end of the guide post, the sliding sleeve can be movably sleeved on the guide post, the bottom end of the sliding sleeve is provided with a guide post limiting part, and the guide post limiting part can extend into the semicircular groove; and
a measurement assembly, comprising: the first dial indicator and the second dial indicator are arranged above one end of a standard correcting bush or a measured bearing bush which is placed in the bearing bush radius height measuring seat; and the second dial indicator is arranged above the other end of the standard correcting bush or the measured bearing bush which is placed in the bearing bush radius height measuring seat.
2. The apparatus of claim 1, wherein the gauge pad is made of a die steel material.
3. The apparatus of claim 1, wherein the sliding sleeve is threadedly engaged with the guide post.
4. The apparatus of claim 1, wherein the first dial indicator is adjustably positioned over one end of a standard proof pad or a measured bearing pad received in the pad radius height measuring seat, and the second dial indicator is adjustably positioned over the other end of the standard proof pad or the measured bearing pad received in the pad radius height measuring seat.
5. The apparatus of claim 4, wherein the first and second dial indicators are digital display dial indicators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921472087.7U CN210426367U (en) | 2019-09-05 | 2019-09-05 | Device for measuring radius height of crankshaft bearing bush of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921472087.7U CN210426367U (en) | 2019-09-05 | 2019-09-05 | Device for measuring radius height of crankshaft bearing bush of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426367U true CN210426367U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921472087.7U Active CN210426367U (en) | 2019-09-05 | 2019-09-05 | Device for measuring radius height of crankshaft bearing bush of engine |
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| CN (1) | CN210426367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455159A (en) * | 2019-09-05 | 2019-11-15 | 广西玉柴机器股份有限公司 | The measuring device of the crankshaft bearing liner radial height of engine |
| CN113108745A (en) * | 2021-03-29 | 2021-07-13 | 中船重工重庆智能装备工程设计有限公司 | Bearing bush radius height and alignment parallelism detection device |
-
2019
- 2019-09-05 CN CN201921472087.7U patent/CN210426367U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455159A (en) * | 2019-09-05 | 2019-11-15 | 广西玉柴机器股份有限公司 | The measuring device of the crankshaft bearing liner radial height of engine |
| CN113108745A (en) * | 2021-03-29 | 2021-07-13 | 中船重工重庆智能装备工程设计有限公司 | Bearing bush radius height and alignment parallelism detection device |
| CN113108745B (en) * | 2021-03-29 | 2023-03-10 | 中船重工重庆智能装备工程设计有限公司 | Bearing bush radius height and alignment parallelism detection device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230118 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |
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| TR01 | Transfer of patent right |