CN109540532B - Detection device for engine crankshaft - Google Patents

Detection device for engine crankshaft Download PDF

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Publication number
CN109540532B
CN109540532B CN201910039616.2A CN201910039616A CN109540532B CN 109540532 B CN109540532 B CN 109540532B CN 201910039616 A CN201910039616 A CN 201910039616A CN 109540532 B CN109540532 B CN 109540532B
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China
Prior art keywords
crankshaft
detecting
detection
sliding
rotary rod
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CN201910039616.2A
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Chinese (zh)
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CN109540532A (en
Inventor
黄桥生
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN201910039616.2A priority Critical patent/CN109540532B/en
Publication of CN109540532A publication Critical patent/CN109540532A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/02Details or accessories of testing apparatus

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses a detection device for an engine crankshaft, which comprises a detection table and a detection assembly, wherein a mounting bracket for mounting the crankshaft is arranged on the detection table, a rotary rod is arranged in the detection table, a plurality of discs which are arranged along the axial spiral of the rotary rod at equal intervals are arranged on the rotary rod, each disc is connected with a shaft neck of the crankshaft through a connection assembly, and a driving assembly connected with the rotary rod is further arranged on one side of the detection table. The detection device provided by the invention has the advantages that the structure is compact, the design is reasonable, the device is used for detecting the engine crankshaft, the simulation of the working environment of the crankshaft can be realized, the change of the working state of the crankshaft is reflected, the detection precision of the crankshaft is improved, the control of the quality of the crankshaft is facilitated, and the device has the characteristics of convenience in operation and strong practicability.

Description

Detection device for engine crankshaft
Technical Field
The invention relates to the technical field of detection of engine parts, in particular to a detection device of an engine crankshaft.
Background
The crankshaft is the most important component in the engine, and it takes the force from the connecting rod and converts it into torque to drive other accessories on the engine through the crankshaft output. In the working process, the crankshaft is subjected to the combined action of centrifugal force of the rotating mass, periodically-changed gas inertia force and reciprocating inertia force, so that the crankshaft is subjected to bending and torsion load. Therefore, during crankshaft design and production, the crankshaft needs to be tested to ascertain the quality of the crankshaft. At present, the detection of the crankshaft is mainly based on the size, the assembly angle and the tightness, the quality of the crankshaft cannot be effectively reflected, and the control of the quality of the crankshaft is not facilitated.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides the detecting device which is compact in structure and reasonable in design, and by using the detecting device to detect the engine crankshaft, the simulation of the working environment of the crankshaft can be realized, the change of the working state of the crankshaft is reflected, the precision of crankshaft detection is improved, the control of the quality of the crankshaft is facilitated, and the detecting device has the characteristics of convenience in operation and strong practicability.
The technical scheme adopted by the invention is as follows: the utility model provides a detection device of engine crankshaft, includes detection platform and detection subassembly, the detection bench be equipped with the installing support that is used for installing the bent axle, the detection bench in be equipped with the rotary rod, the rotary rod on be equipped with a plurality of discs of arranging along its axial spiral equidistance, every the disc all be connected with the journal of bent axle through coupling assembling, detection platform one side still be equipped with the drive assembly who is connected with the rotary rod.
As a further improvement, the mounting bracket comprises a fixing frame and a sliding frame, wherein the fixing frame is fixedly arranged at one end of the detection table, the sliding frame is arranged at the other end of the detection table, and shaft sleeves are rotatably arranged on the fixing frame and the sliding frame through bearings.
Further, the detection platform in be equipped with the sliding tray, the slide frame bottom be equipped with the sliding block, sliding block slidable mounting in the sliding tray, the sliding block both sides be equipped with rather than the anti-top bolt of spin joint, the detection bench at sliding tray top edge is equipped with the scale mark.
Further, the detection assembly comprises an operation computer and a photoelectric detector group, wherein the photoelectric detector group is connected with the operation computer through a wire, and the photoelectric detector group is arranged above the detection table through a support frame.
Further, the connecting assembly comprises a connecting seat, a connecting rod and two clamps, wherein the connecting seat is movably arranged on the disc, one end of the connecting rod is connected with the connecting seat, and the bottoms of the two clamps are hinged with each other through a hinge shaft and are arranged at the other end of the connecting rod.
Further, the connecting rod is detachably connected with the connecting seat through threads, a pair of annular clamping grooves are formed in the periphery of the disc, a pair of annular bosses are arranged at the bottom of the connecting seat, and the annular bosses are rotatably arranged in the annular clamping grooves.
Further, two the clip be semicircular hoop, one of them clip top be equipped with the arc fixture block, another clip top be equipped with the arc draw-in groove, the arc fixture block install in the arc draw-in groove.
Further, two still be equipped with locking mechanism in the clip, this locking mechanism includes axostylus axostyle, lifter, shell fragment and two connection copper sheet, axostylus axostyle one end is connected with the articulated shaft of two clip bottoms, and the other end slides and peg graft in the lifter, the shell fragment install at the top of lifter, two the connection copper sheet be located the both sides of axostylus axostyle respectively, and every connection copper sheet both ends link to each other with clip, lifter are articulated respectively.
Further, the driving component is a belt pulley transmission mechanism, and a protective cover surrounding the driving component is further arranged on one side of the detection table.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
the detection device provided by the invention has the advantages that the structure is compact, the design is reasonable, the device is used for detecting the engine crankshaft, the motion of the piston when the engine moves is simulated through the spiral distribution of the disc, the simulation of the working environment of the crankshaft can be realized, the change of the working state of the crankshaft is reflected, the detection precision of the crankshaft is improved, the control of the quality of the crankshaft is facilitated, and the detection device has the characteristics of convenience in operation and strong practicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the connection of the rotating rod to the disk in the present invention;
FIG. 3 is an enlarged schematic view of a part of the connection structure of the disc and the connection seat according to the present invention;
FIG. 4 is an enlarged schematic view of a partial top view of a test table according to the present invention;
fig. 5 is an enlarged schematic view of a part of the structure of the clip of the present invention.
Wherein: 1-detecting table, 2-rotary rod, 3-disc, 4-mount, 5-carriage, 6-sliding groove, 7-drive assembly, 8-sliding block, 9-anti-top bolt, 10-scale mark, 11-operation computer, 12-photoelectric detector group, 13-support frame, 14-connecting seat, 15-connecting rod, 16-clip, 17-annular clamping groove, 18-annular boss, 19-arc fixture block, 20-arc clamping groove, 21-axostylus axostyle, 22-lifting block, 23-shrapnel, 24-connection copper sheet, 25-protection casing.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 1-5, the detecting device for the engine crankshaft of the invention comprises a detecting table 1 and a detecting component, wherein a mounting bracket for mounting the crankshaft is arranged on the detecting table 1, a rotating rod 2 is arranged in the detecting table 1, the rotating rod 2 is rotatably mounted in the detecting table 1 through a bearing, a plurality of discs 3 which are spirally and equidistantly arranged along the axial direction of the rotating rod 2 are arranged on the rotating rod 2, the number of the discs 3 is the same as that of the crankshaft journals, the arrangement of the discs 3 is the same as that of the crankshaft journals, each disc 3 is connected with the crankshaft journals through the connecting component, a driving component 7 connected with the rotating rod 2 is further arranged on one side of the detecting table 1, the rotating rod 2 is driven to rotate through the driving component 7, specifically, the mounting bracket comprises a fixing frame 4 and a sliding frame 5, wherein the fixing frame 4 is fixedly mounted at one end of the detecting table 1, the sliding frame 5 is mounted at the other end of the detecting table 1, shaft sleeves are mounted on the fixing frame 4 and the sliding frame 5 through bearings, and as keys are arranged at the two ends of the crankshaft, the shaft sleeves are matched with the keys at the two ends of the crankshaft, the two ends of the crankshaft shaft sleeve, the key grooves are arranged in the shaft sleeve, the two ends matched with the crankshaft shaft sleeves are arranged in the shaft sleeve, the two ends of the shaft sleeve are arranged in the shaft, and the shaft sleeve, and the driving component is matched with the key, and the crankshaft, and the driving component 4 is rotatably and the sliding frame. The detection assembly comprises an operation computer 11 and a photoelectric detector group 12, wherein the photoelectric detector group 12 is formed by a plurality of types EinScan: a 3D scanner of 12VDC for scanning the crankshaft, a photodetector group 12 connected to the operation computer 11 by a wire, and the photodetector group 12 mounted above the inspection table 1 by a support frame 13. The connecting assembly comprises a connecting seat 14, a connecting rod 15 and two clamps 16, wherein the connecting seat 14 is movably arranged on a disc 3, one end of the connecting rod 15 is connected with the connecting seat 14, the bottoms of the two clamps 16 are mutually hinged through a hinge shaft and are arranged at the other end of the connecting rod 15, a locking mechanism is further arranged in the two clamps 16 and comprises a shaft rod 21, a lifting block 22, a spring piece 23 and two connecting copper pieces 24, one end of the shaft rod 21 is connected with the hinge shaft at the bottom of the two clamps 16, the other end of the shaft rod is slidably inserted into the lifting block 22, the spring piece 23 is arranged at the top of the lifting block 22, the two connecting copper pieces 24 are respectively arranged at two sides of the shaft rod 21, two ends of each connecting copper piece 24 are respectively hinged with the clamps 16 and the lifting block 22, when the disc 3 is connected with a crankshaft, the two clamps 16 are connected into the journal of the crankshaft, the two clamps 16 are closed, the connecting copper pieces 24 are closed at the moment, the lifting block 22 are driven to move upwards along the shaft rod 21, and the spring piece 23 is driven to move upwards, and the spring piece 23 is driven to be attached to the journal of the crankshaft, so that the fixing of the crankshaft is realized.
Preferably, the connecting rod 15 and the connecting seat 14 are detachably connected through threads, so that the connecting assembly is convenient to replace, the connecting assembly is suitable for different crankshaft journal connections, a pair of annular clamping grooves 17 are formed in the periphery of the disc 3, correspondingly, a pair of annular bosses 18 are formed in the bottom of the connecting seat 14, the annular bosses 18 are rotatably arranged in the annular clamping grooves 17, and the disc 3 and the connecting seat 14 are prevented from axially shifting while relative rotation of the disc 3 and the connecting seat 14 is met. The two clamps 16 are semicircular iron rings, wherein an arc clamping block 19 is arranged at the top of one clamp 16, correspondingly, an arc clamping groove 20 is arranged at the top of the other clamp 16, the arc clamping block 19 is arranged in the arc clamping groove 20, the arc clamping block 19 and the arc clamping groove 20 are in interference fit, and the two clamps 16 are conveniently closed and locked through the fit of the two clamps. The driving component 7 is a belt pulley transmission mechanism, and a protective cover 25 surrounding the driving component 7 is arranged on one side of the detection table 1 to prevent foreign matters from being involved in the belt transmission mechanism and ensure the detection safety. Be equipped with sliding tray 6 in detecting platform 1, correspondingly, be equipped with sliding block 8 in sliding tray 5 bottom, sliding block 8 slidable mounting is in sliding tray 6, the position of the adjustable sliding tray 5 of being convenient for to be suitable for the bent axle of different length and use, be equipped with rather than the anti-top bolt 9 of spin-connection in sliding block 8 both sides, can lock sliding tray 5, prevent that it from rocking, be equipped with scale mark 10 on detecting platform 1 at sliding tray 6 top edge, the displacement volume of the sliding tray 5 of being convenient for observe.
When the detection device is used, a crankshaft is firstly arranged between a fixed frame 4 and a sliding frame 5, then a clamp 16 is connected with a journal of the crankshaft, connection between a disc 3 and the crankshaft is realized, when the crankshaft is detected, a photoelectric detector group 12 scans the crankshaft after the installation to obtain initial state parameters (such as deformation of the crankshaft and connection states of all parts in the crankshaft), the scanned initial state parameters are conveyed to an operation computer 11 for storage, a driving component 7 is started again to drive a rotating rod 2 to rotate, the crankshaft is driven to rotate through the cooperation of the disc 3, the connecting seat 14, a connecting rod 15 and the clamp 16, the crankshaft is simulated to be in a motion state when the engine works, after a period of time, the driving component 7 is closed to stop rotating, the photoelectric detector group 12 scans the crankshaft at the moment to obtain the motion state parameters of the crankshaft, the parameters are conveyed to the operation computer 11 for storage, the driving component 7 is restarted to drive the crankshaft to rotate at different rotating speeds, the state parameters of the crankshaft are scanned at different rotating speeds, so that the motion state parameters of the crankshaft in a plurality of motion states are obtained, and finally, an operator can evaluate the motion state parameters of the crankshaft through the initial state parameters and the crankshaft. The detection device provided by the invention has the advantages that the structure is compact, the design is reasonable, the device is used for detecting the engine crankshaft, the motion of the piston when the engine moves is simulated through the spiral distribution of the disc, the simulation of the working environment of the crankshaft can be realized, the change of the working state of the crankshaft is reflected, the detection precision of the crankshaft is improved, the control of the quality of the crankshaft is facilitated, and the detection device has the characteristics of convenience in operation and strong practicability.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.

Claims (5)

1. The detection device for the engine crankshaft is characterized by comprising a detection table (1) and a detection assembly, wherein a mounting bracket for mounting the crankshaft is arranged on the detection table (1), a rotary rod (2) is arranged in the detection table (1), a plurality of discs (3) which are arranged at equal intervals along the axial spiral of the rotary rod are arranged on the rotary rod (2), each disc (3) is connected with the journal of the crankshaft through a connecting assembly, and a driving assembly (7) connected with the rotary rod (2) is further arranged on one side of the detection table (1); the connecting component comprises a connecting seat (14), a connecting rod (15) and two clamps (16), wherein the connecting seat (14) is movably arranged on a disc (3), one end of the connecting rod (15) is connected with the connecting seat (14), the bottoms of the two clamps (16) are hinged with each other through a hinge shaft and are arranged at the other end of the connecting rod (15), the connecting rod (15) is detachably connected with the connecting seat (14) through threads, a pair of annular clamping grooves (17) are formed in the periphery of the disc (3), a pair of annular bosses (18) are arranged at the bottom of the connecting seat (14), the annular bosses (18) are rotatably arranged in the annular clamping grooves (17), two clamps (16) are semicircular iron rings, one of the tops of the clamps (16) is provided with an arc clamping block (19), the top of the other clamp (16) is provided with an arc clamping groove (20), the arc clamping block (19) is arranged in the arc clamping groove (20), two copper sheet (16) are also provided with a pair of annular bosses (18), the copper sheet (16) are also provided with a pair of annular bosses (21), the other ends of copper sheet (21) are connected with two lifting locking mechanisms (22) and one ends of the two lifting locking mechanisms (22) are connected with one ends of the two lifting locking mechanism (22) in a sliding mode, the elastic sheet (23) is arranged at the top of the lifting block (22), two connecting copper sheets (24) are respectively positioned at two sides of the shaft lever (21), and two ends of each connecting copper sheet (24) are respectively hinged with the clip (16) and the lifting block (22).
2. The device for detecting the engine crankshaft according to claim 1, wherein the mounting bracket comprises a fixing frame (4) and a sliding frame (5), the fixing frame (4) is fixedly arranged at one end of the detecting table (1), the sliding frame (5) is arranged at the other end of the detecting table (1), and shaft sleeves are rotatably arranged on the fixing frame (4) and the sliding frame (5) through bearings.
3. The device for detecting the engine crankshaft according to claim 2, wherein the detection table (1) is internally provided with a sliding groove (6), the bottom of the sliding frame (5) is provided with a sliding block (8), the sliding block (8) is slidably arranged in the sliding groove (6), two sides of the sliding block (8) are provided with anti-jacking bolts (9) screwed with the sliding block, and the detection table (1) at the top edge of the sliding groove (6) is provided with scale marks (10).
4. The device for detecting the engine crankshaft according to claim 1, wherein the detecting assembly comprises an operating computer (11) and a photoelectric detector group (12), the photoelectric detector group (12) is connected with the operating computer (11) through a wire, and the photoelectric detector group (12) is arranged above the detecting table (1) through a supporting frame (13).
5. The device for detecting the crankshaft of the engine according to any one of claims 1 to 4, wherein the driving assembly (7) is a belt pulley transmission mechanism, and a protective cover (25) surrounding the driving assembly (7) is further arranged on one side of the detecting table (1).
CN201910039616.2A 2019-01-16 2019-01-16 Detection device for engine crankshaft Active CN109540532B (en)

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CN109540532B true CN109540532B (en) 2023-10-27

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109991010B (en) * 2019-04-30 2024-01-02 广西玉柴机器股份有限公司 Automatic system and detection method for detecting rotation of engine crankshaft
CN114838642B (en) * 2022-06-23 2023-08-11 湖北理工学院 Refrigerating compressor crankshaft detection equipment and detection method

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