CN107907037B - Inspection tool for coaxiality consistency of test bench dynamometer - Google Patents
Inspection tool for coaxiality consistency of test bench dynamometer Download PDFInfo
- Publication number
- CN107907037B CN107907037B CN201711449890.4A CN201711449890A CN107907037B CN 107907037 B CN107907037 B CN 107907037B CN 201711449890 A CN201711449890 A CN 201711449890A CN 107907037 B CN107907037 B CN 107907037B
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- Prior art keywords
- base
- dynamometer
- test bench
- positioning
- centering
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Abstract
The invention discloses an inspection tool for coaxiality consistency of a test bench dynamometer, which comprises the following components: the base is a square body, a guide groove and a slot are formed in the bottom surface of the base, and a positioning pin hole for inserting a positioning pin is formed in one side of the front end of the base; the U-shaped frame is inversely arranged on the upper end surface of the base, and through holes are formed in the front and back of a cross beam of the U-shaped frame in a penetrating manner; and the centering rod is inserted in the through hole, the front end of the centering rod is provided with a centering flange, the end face of the centering flange is provided with a positioning hole matched with the positioning boss, during inspection, the base is moved to the workbench in front of the test bench dynamometer by a forklift, the base moves forward by sliding of the guide groove and the guide bearing until the positioning pin is inserted into the positioning pin hole, and the coaxiality of the test bench dynamometer is inspected by whether the positioning boss is matched with the positioning hole. The inspection tool can rapidly and accurately judge the accuracy of the center height and the position of the rotating shaft of the bench dynamometer and the consistency of each bench.
Description
Technical Field
The invention relates to the field of engine test benches, in particular to an inspection tool for coaxiality consistency of a test bench dynamometer.
Background
In the diesel engine industry, in the test development process, a transmission shaft is required to be used for connecting an engine with a dynamometer serving as test equipment, and when the engine is connected, the rotation center of a flywheel of the engine is required to be ensured to be consistent with the rotation center of a dynamometer shaft.
In modern engine enterprises, generally, up to tens of test benches are arranged, in order to improve the effective utilization rate of the test benches, an engine is generally arranged on a test tray outside the test benches in advance, at the moment, the flywheel rotation center of the engine and the test tray are guaranteed to have a fixed position relationship, and therefore after the engine and the test tray are sent to the test benches, the position of the engine is not required to be adjusted, the engine and a dynamometer can be directly connected by using a transmission shaft, and meanwhile, the rotation center of the flywheel of the engine is guaranteed to be consistent with the rotation center of a dynamometer shaft. Thus, the preparation time of the engine in the rack is reduced, and the test can be rapidly carried out.
However, no special inspection tool exists at present, when a dynamometer is installed in a rack, only a cross laser beam is used to be approximately aligned with the center of a rotation axis of the dynamometer shaft, and then the height and the position of the center are measured by a circle ruler. This approach results in poor accuracy in the mounting of the dynamometer, and poor consistency in the coaxiality of each bench dynamometer. When the engine mounted on the tray is sent to the rack, after the engine is connected with the dynamometer by the transmission shaft, the coaxiality between the flywheel rotation center of the engine and the rotation shaft center of the dynamometer shaft is poor, and when the engine mounted on the tray is on different racks, the coaxiality between the flywheel rotation center of the engine and the rotation shaft center of the dynamometer shaft is also non-uniform. In the test, the coaxiality between the rotation center of the flywheel and the rotation axis center of the dynamometer shaft is poor, so that the engine shakes too much, the rotation speed and the torque are unstable, and the accuracy of test data is seriously affected.
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 forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a checking tool for coaxiality consistency of a test bench dynamometer, which can rapidly and accurately judge the accuracy of the center height and the position of a rotating shaft of the bench dynamometer and the consistency of each bench.
In order to achieve the above object, the invention provides an inspection tool for coaxiality consistency of a test bench dynamometer, the test bench dynamometer is provided with a connecting flange, the connecting flange is provided with a positioning boss, the test bench dynamometer is arranged on a workbench, a guide bearing is arranged on the workbench in front of the test bench dynamometer, a positioning block is arranged on the workbench in front of one side of the test bench dynamometer, and a positioning pin facing to the front is arranged on the positioning block, the inspection tool is characterized in that the inspection tool comprises: the base is a square body, the bottom surface of the base is provided with a guide groove which is used for being in sliding fit with a guide bearing, the bottom surfaces of the bases on two sides of the guide groove are provided with slots for inserting fork truck inserted bars, and one side of the front end of the base is provided with positioning pin holes for inserting positioning pins; the U-shaped frame is inversely arranged on the upper end surface of the base, and through holes are formed in the front and back of a cross beam of the U-shaped frame in a penetrating manner; and the centering rod is inserted in the through hole, the front end of the centering rod is provided with a centering flange, the end face of the centering flange is provided with a positioning hole matched with the positioning boss, during inspection, the base is moved to the workbench in front of the test bench dynamometer by a forklift, the base moves forward by sliding of the guide groove and the guide bearing until the positioning pin is inserted into the positioning pin hole, and the coaxiality of the test bench dynamometer is inspected by whether the positioning boss is matched with the positioning hole.
Preferably, the centering rod is provided with graduation marks, and the graduation marks are used for aligning the end face of the through hole of the cross beam.
Preferably, one end of the cross beam of the U-shaped frame is provided with a receiving cavity for receiving the centering flange, and the tail end of the centering rod protrudes out of the end face of the cross beam of the U-shaped frame when the centering flange is received in the receiving cavity.
Compared with the prior art, the invention has the following beneficial effects: through setting up base, U-shaped frame 11 and centering pole, the front end of centering pole is equipped with centering flange, and the bottom surface of base is equipped with guide way and slot, can be quick, accurate judgement rack dynamometer machine rotation axis center height and the accuracy of position, guaranteed the accuracy of rack dynamometer machine rotation axis center height and position and the uniformity of every rack to test data's accuracy has been guaranteed.
Drawings
FIG. 1 is a schematic structural view of an inspection tool for coaxiality consistency of a test stand dynamometer according to the invention;
FIG. 2 is a left side view of a base and a U-shaped frame in an inspection tool for consistency of coaxiality of a test stand dynamometer according to the present invention;
FIG. 3 is a schematic structural view of a guide groove of the bottom surface of a base in an inspection tool for coaxiality consistency of a test bench dynamometer according to the invention;
FIG. 4 is a cross-sectional view of a centering flange in an inspection tool for test stand dynamometer coaxiality consistency according to the present invention;
FIG. 5 is a top view of a shim in an inspection tool for test stand dynamometer coaxiality consistency according to the present invention;
fig. 6 is a front view of a shim in an inspection tool for testing the coaxiality consistency of a bench dynamometer according to the invention.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 6, according to an embodiment of the present invention, an inspection tool for coaxiality consistency of a test stand dynamometer has a connection flange, the connection flange has a positioning boss, the test stand dynamometer is provided on a workbench, a guide bearing is provided on the workbench in front of the test stand dynamometer, a positioning block is provided on the workbench in front of one side of the test stand dynamometer, a positioning pin facing forward is provided on the positioning block, the inspection tool comprises a base 1, a U-shaped frame 11 and a centering rod 2, wherein the base 1 is a square body, a guide groove 13 is provided on the bottom surface of the base 1, the guide groove 13 is used for sliding fit with the guide bearing, a slot 14 for inserting a fork truck inserted rod is provided on the bottom surface of the base 1 on both sides of the guide groove 13, a positioning pin hole 15 for inserting the positioning pin is provided on one side of the front end of the base 1, the U-shaped frame 11 is provided on the upper end surface of the base 1, a through hole is provided on the front and rear of a beam of the U-shaped frame 11, the centering rod 2 is inserted in the through hole, a centering rod 3 is provided on the front end of the centering rod 2, a guide flange 3 is provided on the front end of the centering rod 3 is matched with the guide pin for sliding the guide boss to the positioning boss when the positioning boss is moved to the test stand 1 by the positioning boss and the positioning boss is matched with the positioning boss to the positioning boss for the positioning flange to move forward to the test stand coaxially move to the positioning pin 1.
As a preferred embodiment, the centering rod 2 is provided with graduation marks for aligning the end faces of the through holes of the cross beam.
As a preferred embodiment, the cross member of the U-shaped frame 11 is provided at one end thereof with a receiving cavity 12, the receiving cavity 12 being adapted to receive the centering flange 3, the tail end of the centering rod 2 protruding beyond the end face of the cross member of the U-shaped frame 11 when the centering flange 3 is received in the receiving cavity 12.
In the scheme, the tool is shoveled from the bottom by using a forklift, and the opening of the guide groove 13 at the bottom is set to be a V-shaped opening end, so that the guide bearing is conveniently matched with the guide groove 13 in a sliding mode. The V-shaped opening of the guide groove is aligned with the guide bearing of the rack and pushed forward, and the guide bearing is kept in the guide groove 13 of the tool all the time in the pushing process. Before the front end face of the base 1 contacts with the positioning block, a pin arranged on the positioning block can enter a positioning pin hole 15 of the front end face of the base 1, the positioning pin hole 15 ensures accurate left and right positions of the base 1, the base 1 is continuously pushed forward until the front end face of the base 1 contacts with the end face of the positioning block, then the base 1 is put down, and the forklift is withdrawn. The centering flange 3 is pulled forward together with the centering rod 2 until the graduation marks on the centering rod 2 are exposed out of the end face of the through hole. At this time, the matching condition of the positioning hole on the centering flange 3 and the positioning boss of the dynamometer flange is checked. If the positioning hole on the centering flange completely enters the positioning boss of the dynamometer flange, the center height and the position of the rotation shaft of the dynamometer are met. If not, the position of the dynamometer needs to be adjusted until the positioning hole on the centering flange 3 completely enters the positioning boss of the dynamometer flange. In this scheme, centering flange 3 can be fixed in the front end of centering rod 2 with the bolt, and centering flange 3 has ring flange and adapter sleeve, and the adapter sleeve is inserted to the front end of centering rod 2, is equipped with the spill hole on the quotation of ring flange, and the spill hole holds gasket 4 in the hole, then the bolt passes gasket 4 and the front end locking of centering rod 2.
In summary, the inspection tool for coaxiality consistency of the test bench dynamometer of the embodiment is provided with the base 1, the U-shaped frame 11 and the centering rod 2, the centering flange 3 is arranged at the front end of the centering rod 2, the guide groove 13 and the slot 14 are arranged on the bottom surface of the base 1, the accuracy of the center height and the position of the rotating shaft of the test bench dynamometer can be rapidly and accurately judged, and the accuracy of the center height and the position of the rotating shaft of the test bench dynamometer and the consistency of each test bench are ensured.
The foregoing descriptions of specific exemplary embodiments of the present invention are 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 the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various 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 (1)
1. The utility model provides an inspection frock of test bench dynamometer axiality uniformity, this test bench dynamometer has flange, flange has the location boss, test bench dynamometer sets up on the workstation, is in be equipped with guide bearing on the workstation in test bench dynamometer the place ahead, be in be equipped with the locating piece on the workstation of test bench dynamometer one side place ahead position, be equipped with the locating pin towards the place ahead on the locating piece, its characterized in that, this inspection frock includes:
the base is a square body, a guide groove is formed in the bottom surface of the base and is used for being in sliding fit with the guide bearing, slots for inserting forklift inserting rods are formed in the bottom surfaces of the bases on two sides of the guide groove, and positioning pin holes for inserting the positioning pins are formed in one side of the front end of the base;
the U-shaped frame is inversely arranged on the upper end face of the base, and through holes are formed in the front and rear of a cross beam of the U-shaped frame in a penetrating mode; and
the centering rod is inserted into the through hole, a centering flange is arranged at the front end of the centering rod, a positioning hole matched with the positioning boss is formed in the end face of the centering flange, during inspection, the base is moved onto a workbench in front of the test bench dynamometer by a forklift, the base moves forwards by sliding of the guide groove and the guide bearing until the positioning pin is inserted into the positioning pin hole, and the coaxiality of the test bench dynamometer is inspected by whether the positioning boss is matched with the positioning hole; the centering rod is provided with scale marks which are used for aligning the end face of the through hole of the cross beam; one end of the cross beam of the U-shaped frame is provided with an accommodating cavity, the accommodating cavity is used for accommodating the centering flange, and when the centering flange is accommodated in the accommodating cavity, the tail end of the centering rod protrudes out of the end face of the cross beam of the U-shaped frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449890.4A CN107907037B (en) | 2017-12-27 | 2017-12-27 | Inspection tool for coaxiality consistency of test bench dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449890.4A CN107907037B (en) | 2017-12-27 | 2017-12-27 | Inspection tool for coaxiality consistency of test bench dynamometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107907037A CN107907037A (en) | 2018-04-13 |
| CN107907037B true CN107907037B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711449890.4A Active CN107907037B (en) | 2017-12-27 | 2017-12-27 | Inspection tool for coaxiality consistency of test bench dynamometer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111766071A (en) * | 2020-06-30 | 2020-10-13 | 东风商用车有限公司 | Pre-centering device and using method thereof |
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| CN107907037A (en) | 2018-04-13 |
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