CN216955151U - Crankshaft-driven automatic butt joint mechanism for engine performance test - Google Patents
Crankshaft-driven automatic butt joint mechanism for engine performance test Download PDFInfo
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- CN216955151U CN216955151U CN202122787508.9U CN202122787508U CN216955151U CN 216955151 U CN216955151 U CN 216955151U CN 202122787508 U CN202122787508 U CN 202122787508U CN 216955151 U CN216955151 U CN 216955151U
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Abstract
A crankshaft driving automatic butt-joint mechanism for engine performance test comprises a butt-joint shaft (1) fixedly connected with a main shaft of a servo motor; a driving disc (2), a sliding sleeve (3) and a thrust bearing seat (4) are sequentially arranged on the butt joint shaft in the direction from the end part of the butt joint shaft to the main shaft of the servo motor in an extending way; the driving disc (2) is fixedly arranged at the end part of the butt joint shaft; the sliding sleeve (3) and the thrust bearing seat (4) are sleeved on the butt joint shaft in a manner of axially moving relative to the butt joint shaft; a low-pair mechanism is arranged between the sliding sleeve (3) and the driving disc (2); the low-pair mechanism can form two adaptive states of meshing and releasing with an engine flywheel along with the axial movement of the sliding sleeve (3) relative to the butt joint shaft (1), and butt joint is established through meshing adaptation. The crankshaft driving automatic butt joint mechanism for the engine performance test meets the requirements of high stability and high safety in main shaft connection, and reduces the failure rate in the engine cold test.
Description
Technical Field
The utility model belongs to the field of engine cold test performance tests, and particularly relates to a crankshaft driving automatic butt joint mechanism for an engine performance test.
Background
The servo motor rotates to drive the engine crankshaft to rotate, which is an indispensable ring in the process of testing the cold test performance of the engine, and the servo motor drives the engine to rotate to simulate the mechanical state of the engine in operation. The most key item of the connection of the driving mechanism and the crankshaft is as follows: the connection is required to be reliable, and the transmission torque is rigid; most of the existing testing equipment transmits torque by using a spline, and the spline has high requirement on the coaxiality of the equipment and an engine and is difficult to butt. Aiming at the requirement, the automatic butt joint mechanism of the crankshaft driving clamping jaws for the engine performance test is designed, the butt joint mechanism automatically clamps a process flywheel or a product flywheel arranged on the end face of the crankshaft of the engine, and the flywheel is dragged to rotate during the test to transmit power.
The application numbers are: CN201720757688.7 utility model discloses, disclose "a quick interfacing apparatus of engine testboard", include: the device comprises a base, a power mechanism, a locking mechanism and a quick connection panel, wherein the quick connection panel is used for being in butt joint with a pipeline joint of an engine test bench; the power mechanism is fixed on the base and comprises an output shaft, and the base comprises a locking matching piece matched with the locking mechanism; the free end of the output shaft is connected with the quick connection panel and is used for driving the quick connection panel to move towards the direction close to or far away from the pipeline joint; the output shaft is connected with the locking mechanism and is used for driving the locking mechanism to move towards the direction close to or far away from the locking matching piece; the locking mechanism is used for being matched with the locking matching piece to lock or unlock the quick-connection panel and the base.
The application numbers are: CN201410805375.5 discloses an engine pair for bench test
The engine butt joint test trolley comprises a movable bearing platform and a tray for placing the engine, a positioning and clamping mechanism for positioning and clamping the engine is installed on the tray, and the tray can be pivotally installed on the bearing platform so that the engine placed on the tray can be inclined at different angles in different pivoting positions.
The application numbers are: the utility model application of CN201610171170.5 discloses a 'butt joint test bed passive platform conversion mechanism', which mainly realizes three rotational degrees of freedom of rolling, yawing and pitching and a translational degree of freedom in the vertical direction in the butt joint process. The whole passive platform comprises a moving end of the passive platform, a rotary hanging bracket, a ball joint, a conversion mechanism and a mounting flange. Wherein the conversion mechanism mainly realizes the conversion from the vertical direction to the horizontal direction in function. The passive platform of the butt joint test bed mainly can realize the performance test of the passive butt joint mechanism, and in order to enable the butt joint mechanism to realize the bidirectionality, the conversion mechanism is utilized to realize the conversion of 90 degrees in function. The core of the conversion mechanism is that the worm gear changes the power transmission direction, and the test performance of the passive platform of the butt joint test bed in the vertical and horizontal directions is good through the characteristics of the stepping motor and the self-locking of the worm gear.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a crankshaft driving automatic butt-joint mechanism for an engine performance test, which has the following technical scheme:
the utility model provides an automatic docking mechanism of crankshaft drive for engine performance test which characterized in that:
comprises a butt joint shaft (1) fixedly connected with a main shaft of a servo motor;
a driving disc (2), a sliding sleeve (3) and a thrust bearing seat (4) are sequentially arranged on the butt joint shaft in the direction from the end part of the butt joint shaft to the main shaft of the servo motor in an extending way;
the driving disc (2) is fixedly arranged at the end part of the butt joint shaft;
the sliding sleeve (3) and the thrust bearing seat (4) are sleeved on the butt joint shaft in a manner of axially moving relative to the butt joint shaft;
a low-pair mechanism is arranged between the sliding sleeve (3) and the driving disc (2);
the low-pair mechanism can form two adaptive states of meshing and releasing with an engine flywheel along with the axial movement of the sliding sleeve (3) relative to the butt joint shaft (1), and butt joint is established through meshing adaptation.
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the low-pair mechanism is a pair of two-link mechanisms which are symmetrically arranged.
The utility model discloses a crankshaft driving automatic butt-joint mechanism for engine performance test, which is characterized in that:
the sliding sleeve (3) and the thrust bearing seat (4) are connected with the butt-joint shaft through an inner retainer ring and an outer retainer ring of the bearing;
the inner retainer ring of the bearing is connected with the sliding sleeve (3),
the bearing outer retainer ring is connected with the thrust bearing seat (4).
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the first component of the two-link mechanism is connected with the sliding sleeve and is adjustable in length;
a second member (5) of the two-link mechanism is hinged with the driving disc (2) to form a part extending from the hinged point to the direction of the sliding sleeve and a part extending from the hinged point to the direction of the engine flywheel;
the symmetrically arranged second members form a jaw structure through a part extending from the hinge point to the direction of the engine flywheel, and jaw teeth (6) used for being meshed with the flywheel teeth are arranged at the end parts of the jaw structure;
the first component is hinged with the second component;
the two adaptive states of the rotation of the second component around the driving disc, the engagement and the release of the two ends of the second component and the engine flywheel are established through the movement of the driving sliding sleeve (3) relative to the butt joint shaft (1).
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the sliding sleeve (3) and the thrust bearing seat (4) are driven integrally;
the driving of the sliding sleeve (3) is established by driving the thrust bearing seat (4).
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the first component consists of a joint rod (7), a spring (8) and a rotary joint (9);
the joint rod (7) is hinged with the second component (5);
the rotary joint (9) is connected with the sliding sleeve (3);
the spring (8) is connected in a telescopic manner between the joint lever (7) and the rotary joint (9).
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
a stop key (10) is arranged on one surface of the driving disc opposite to the sliding sleeve, and a groove matched with the stop key is arranged at the corresponding position of the sliding sleeve;
when the low-pair mechanism and the engine flywheel are in a meshing adaptive state, the limit and self-locking are established through the stop key and the groove.
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the gravity center of the second component is arranged at a part extending from the hinge point to the direction of the sliding sleeve.
The utility model discloses a crankshaft driving automatic butt joint mechanism for engine performance testing, which is characterized in that:
the spring (8) is a rectangular spring.
The utility model discloses a crankshaft driving automatic butt-joint mechanism for engine performance test, which is characterized in that:
the jaw teeth (6) are arranged in a manner that the width from the root part to the outside is gradually narrowed.
The crankshaft driving automatic butt joint mechanism for the engine performance test meets the requirements of high stability and high safety in main shaft connection, and reduces the failure rate in the engine cold test; the device main shaft connection high adaptability is realized, the butt joint of the main shafts of the devices is realized by different machine types, and the device is rapid and efficient; based on the mechanical self-locking principle, the structure is simple, the stability is good, the safety is high, and the manufacturing cost is low; the modularized design, easy wearing and tearing spare are torn open and are traded conveniently, and the maintenance cost is low.
Drawings
FIG. 1 is a schematic structural view of a release operation state in the present invention;
FIG. 2 is a schematic structural view of an engaged state of the present invention;
FIG. 3 is a schematic structural diagram of a release operating state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an engagement operating state in the embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
1-a butt-joint shaft is connected with the shaft,
2-a driving disc which is arranged on the frame,
3-the sliding sleeve is arranged on the upper part of the sliding sleeve,
4-a thrust bearing seat is arranged on the bearing seat,
5-the second member is a hollow member,
6-the teeth of the clamping jaw,
7-a joint rod, wherein the joint rod is provided with a connecting rod,
8-the spring is arranged on the upper portion of the frame,
9-a rotating joint is arranged at the upper part of the main body,
10-stop key.
Detailed Description
The present invention provides a crankshaft driving automatic docking mechanism for engine performance test, which is further described in detail with reference to the drawings and the detailed description.
The crankshaft driving automatic butt joint mechanism for the engine performance test is shown in figures 1 and 2,
comprises a butt joint shaft (1) fixedly connected with a main shaft of a servo motor;
a driving disc (2), a sliding sleeve (3) and a thrust bearing seat (4) are sequentially arranged on the butt joint shaft in the direction from the end part of the butt joint shaft to the main shaft of the servo motor in an extending way;
the driving disc (2) is fixedly arranged at the end part of the butt joint shaft;
the sliding sleeve (3) and the thrust bearing seat (4) are sleeved on the butt joint shaft in a manner of axially moving relative to the butt joint shaft;
a low-pair mechanism is arranged between the sliding sleeve (3) and the driving disc (2);
the low-pair mechanism can form two adaptive states of meshing and releasing with an engine flywheel along with the axial movement of the sliding sleeve (3) relative to the butt joint shaft (1), and butt joint is established through meshing adaptation.
Wherein,
the low-pair mechanism is a pair of two-link mechanisms which are symmetrically arranged.
Wherein,
the sliding sleeve (3) and the thrust bearing seat (4) are connected with the butt joint shaft through inner and outer retainer rings of the bearing;
the inner retainer ring of the bearing is connected with the sliding sleeve (3),
the bearing outer retainer ring is connected with the thrust bearing seat (4).
Wherein,
the first component of the two-link mechanism is connected with the sliding sleeve and is adjustable in length;
a second member (5) of the two-link mechanism is hinged with the driving disc (2) to form a part extending from the hinged point to the direction of the sliding sleeve and a part extending from the hinged point to the direction of the engine flywheel;
the symmetrically arranged second members form a jaw structure through a part extending from the hinge point to the direction of the engine flywheel, and jaw teeth (6) used for being meshed with the flywheel teeth are arranged at the end parts of the jaw structure;
the first component is hinged with the second component;
the two adaptive states of the rotation of the second component around the driving disc, the engagement and the release of the two ends of the second component and the engine flywheel are established through the movement of the driving sliding sleeve (3) relative to the butt joint shaft (1).
Wherein,
the sliding sleeve (3) and the thrust bearing seat (4) are driven integrally;
the driving of the sliding sleeve (3) is established by driving the thrust bearing seat (4).
Wherein,
the first component consists of a joint rod (7), a spring (8) and a rotary joint (9);
the joint rod (7) is hinged with the second component (5);
the rotary joint (9) is connected with the sliding sleeve (3);
the spring (8) is connected in a telescopic manner between the joint lever (7) and the rotary joint (9).
Wherein,
a stop key (10) is arranged on one surface of the driving disc opposite to the sliding sleeve, and a groove matched with the stop key is arranged at the corresponding position of the sliding sleeve;
when the low-pair mechanism and the engine flywheel are in a meshing adaptive state, the limit and self-locking are established through the stop key and the groove.
Wherein,
the gravity center of the second member is arranged in a part which extends from the hinge point to the direction of the sliding sleeve in a deviation manner.
Wherein,
the spring (8) is a rectangular spring.
Wherein,
the jaw teeth (6) are arranged in a manner that the width from the root part to the outside is gradually narrowed.
Working process, principle and embodiment
According to the structural views 1 and 2, the following are shown: part 1 is a butt joint shaft, part 2 is a driving disc, part 3 is a sliding sleeve, part 4 is a thrust bearing seat, part 5 is a second component (namely, a claw), part 6 is a claw tooth, and part 7 is a joint rod; part 8 is a spring, part 9 is a swivel joint and part 10 is a stop key.
As shown in structural views 1 and 2, the butt joint shaft 1 is connected with a main shaft of a servo motor, and components 2, 3 and 4 are arranged on the component 1. The sliding sleeve and the thrust bearing seat can slide on the butt-joint shaft, the driving disc is fixed at the end part of the butt-joint shaft, and the stop key 10 is installed on the driving disc. The second member and the claw teeth form a complete set of tooth claw body which is arranged on the driving disc 2, the other end of the tooth claw body is connected with a joint rod in the first member, and a rotary joint 9 of the first member is connected with the sliding sleeve 3. The thrust bearing seat 2 is connected with the cylinder, the axial positions of the sliding sleeve and the thrust bearing seat on the butt shaft are controlled by controlling the cylinder (wherein, the sliding sleeve 3 and the thrust bearing seat 4 are connected with the butt shaft through a bearing retainer ring, an inner bearing retainer ring is connected with the sliding sleeve 3, an outer bearing retainer ring is connected with the thrust bearing seat 4), and the component II rotates according to a pin shaft (or a hinge shaft) fixed on the driving disc 2 under the action of the sliding sleeve, so that the pawl teeth 6 of the tail end part are opened or closed.
As shown in structural views 3 and 4, when the cylinder connected with the thrust bearing seat is in a contraction state, the sliding sleeve drives the sliding sleeve group to pull the second component to open the jaw structure, so that the engine can conveniently enter a butt joint position. At the moment, the included angle alpha between the axis of the sliding sleeve group consisting of the joint rod, the rectangular spring and the rotary joint and the axis of the butt joint shaft 1 is smaller than 90 degrees, the limit stroke position is formed between the rotary joint and the joint rod, and the second component is not influenced by the spring force of the rectangular spring. The angle alpha of the claw structure is continuously increased along with the pushing of the cylinder connected with the thrust bearing seat. When the angle alpha is equal to 90 deg., the distance between the rotary joint and the joint rod is reduced and the rectangular spring is correspondingly contracted by its action. The second component is clamped on the flywheel and has certain pretightening force under the action of the spring force of the first component. The force applied to the sliding sleeve is perpendicular to the sliding direction of the sliding sleeve, and the force has no component force in the sliding direction of the sliding sleeve, so that the position is the dead point position of the sliding sleeve. The cylinder continues to advance, and the jaw structure alpha angle continues to increase until the sliding sleeve contacts with the stop key. When the angle alpha is larger than 90 degrees, the sliding sleeve is subjected to component force towards the driving disc in the sliding direction to tightly press the sliding sleeve and the stop key, the claw structure completes self-locking, and the claws firmly grasp the flywheel without loosening under the action of no external force, as shown in a structural view 4.
In addition, when the stop key limits the stroke and the position of the sliding sleeve, one part of the stop key is inserted into the clamping groove of the sliding sleeve, the sliding sleeve is driven to rotate together when the main shaft rotates, and the burden of the joint rod, the rectangular spring and the rotary joint is shared. The jack catch design is circumference symmetrical layout, and when flywheel and butt joint axle disalignment, when the jack catch tooth meshing with the engine flywheel, establishes the regulation from rectifying a deviation through the telescopic spring, even consequently when butt joint in-process flywheel axis and equipment main shaft theoretical axis have less difference, also can accomplish the requirement of equipment test, simultaneously for this kind of realization from rectifying a deviation, the jack catch tooth is outwards to be the setting of width gradually-narrowing formula by the root. The design gravity center of the second component is close to the end connected with the joint rod, and when the spindle rotates at a high speed, extra force can be provided for the clamping jaw to clamp the flywheel under the action of centrifugal force. This structure also can maintain the chucking state under the circumstances of equipment outage, has avoided causing the potential safety hazard because the jack catch pine takes off.
The crankshaft driving automatic butt joint mechanism for the engine performance test meets the requirements of high stability and high safety in main shaft connection, and reduces the failure rate in the engine cold test; the device main shaft connection high adaptability is realized, the butt joint of the main shafts of the devices is realized by different machine types, and the device is rapid and efficient; based on the mechanical self-locking principle, the structure is simple, the stability is good, the safety is high, and the manufacturing cost is low; the modularized design, easy wearing and tearing spare are torn open and are traded conveniently, and the maintenance cost is low.
Claims (10)
1. The utility model provides an automatic docking mechanism of crankshaft drive for engine performance test which characterized in that:
comprises a butt joint shaft (1) fixedly connected with a main shaft of a servo motor;
a driving disc (2), a sliding sleeve (3) and a thrust bearing seat (4) are sequentially arranged on the butt joint shaft in the direction from the end part of the butt joint shaft to the main shaft of the servo motor in an extending way;
the driving disc (2) is fixedly arranged at the end part of the butt joint shaft;
the sliding sleeve (3) and the thrust bearing seat (4) are sleeved on the butt joint shaft in a manner of axially moving relative to the butt joint shaft;
a low-pair mechanism is arranged between the sliding sleeve (3) and the driving disc (2);
the low-pair mechanism can form two adaptive states of meshing and releasing with an engine flywheel along with the axial movement of the sliding sleeve (3) relative to the butt joint shaft (1), and butt joint is established through meshing adaptation.
2. The crankshaft driven automatic docking mechanism for the engine performance test as claimed in claim 1, wherein:
the low-pair mechanism is a pair of two-link mechanisms which are symmetrically arranged.
3. The crankshaft driven automatic docking mechanism for the engine performance test as claimed in claim 1, wherein:
the sliding sleeve (3) and the thrust bearing seat (4) are connected with the butt joint shaft through inner and outer retainer rings of the bearing;
the inner retainer ring of the bearing is connected with the sliding sleeve (3),
the bearing outer retainer ring is connected with the thrust bearing seat (4).
4. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 2, wherein:
the first component of the two-link mechanism is connected with the sliding sleeve and is adjustable in length;
a second member (5) of the two-link mechanism is hinged with the driving disc (2) to form a part extending from the hinged point to the direction of the sliding sleeve and a part extending from the hinged point to the direction of the engine flywheel;
the symmetrically arranged second members form a jaw structure through a part extending from the hinge point to the direction of the engine flywheel, and jaw teeth (6) used for being meshed with the flywheel teeth are arranged at the end parts of the jaw structure;
the first component is hinged with the second component;
the two adaptive states of the rotation of the second component around the driving disc, the engagement and the release of the two ends of the second component and the engine flywheel are established through the movement of the driving sliding sleeve (3) relative to the butt joint shaft (1).
5. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 4, wherein:
the sliding sleeve (3) and the thrust bearing seat (4) are driven integrally;
the driving of the sliding sleeve (3) is established by driving the thrust bearing seat (4).
6. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 4, wherein:
the first component consists of a joint rod (7), a spring (8) and a rotary joint (9);
the joint rod (7) is hinged with the second component (5);
the rotary joint (9) is connected with the sliding sleeve (3);
the spring (8) is connected in a telescopic manner between the joint lever (7) and the rotary joint (9).
7. The crankshaft driven automatic docking mechanism for the engine performance test as claimed in claim 1, wherein:
a stop key (10) is arranged on one surface of the driving disc opposite to the sliding sleeve, and a groove matched with the stop key is arranged at the corresponding position of the sliding sleeve;
when the low-pair mechanism and the engine flywheel are in a meshing adaptive state, the limit and self-locking are established through the stop key and the groove.
8. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 4, wherein:
the gravity center of the second component is arranged at a part extending from the hinge point to the direction of the sliding sleeve.
9. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 6, wherein:
the spring (8) is a rectangular spring.
10. The crankshaft driven automatic docking mechanism for the engine performance test as set forth in claim 4, wherein:
the jaw teeth (6) are arranged in a manner that the width from the root part to the outside is gradually narrowed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122787508.9U CN216955151U (en) | 2021-11-15 | 2021-11-15 | Crankshaft-driven automatic butt joint mechanism for engine performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122787508.9U CN216955151U (en) | 2021-11-15 | 2021-11-15 | Crankshaft-driven automatic butt joint mechanism for engine performance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216955151U true CN216955151U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122787508.9U Active CN216955151U (en) | 2021-11-15 | 2021-11-15 | Crankshaft-driven automatic butt joint mechanism for engine performance test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216955151U (en) |
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2021
- 2021-11-15 CN CN202122787508.9U patent/CN216955151U/en active Active
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