CN213598071U

CN213598071U - Turning mechanism

Info

Publication number: CN213598071U
Application number: CN202022584742.7U
Authority: CN
Inventors: 牛军军; 余正彬; 屠丹红; 黄皓; 何军
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-07-02
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to the field of engines, in particular to a turning mechanism, which comprises a fluted disc and a gear plate, wherein the fluted disc is used for connecting a flywheel of an engine; the device comprises a machine body and a barring axle, wherein one end of the barring axle is rotatably connected with the machine body; the turning gear is sleeved on the turning shaft in a sliding mode and is configured to limit rotation relative to the turning shaft; a shift fork, the barring gear being rotatable relative to the shift fork; and the distance adjusting screw is in threaded connection with the shifting fork, the shifting fork is limited to rotate relative to the distance adjusting screw, and the distance adjusting screw can rotate to drive the shifting fork to drive the barring gear to move along the axial direction of the barring axle so as to enable the barring gear to be meshed with or separated from the fluted disc. The utility model discloses a position of gear shift fork is adjusted to the roll adjustment screw rod to make the barring gear with install the fluted disc meshing on the engine flywheel, finally reach the rotatory purpose of drive engine crankshaft, this barring mechanism simple structure, it is with low costs.

Description

Turning mechanism

Technical Field

The utility model relates to an engine equipment technical field especially relates to a barring mechanism.

Background

When the parts of the diesel engine are assembled and maintained, the parts need to be adjusted to a specific angle and then assembled and disassembled, if the connecting rod is assembled and disassembled, the crankshaft needs to be rotated to a certain angle, and an operation space exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a turning mechanism, simple structure, it is with low costs.

To achieve the purpose, the utility model adopts the following technical proposal:

a barring mechanism, comprising:

the fluted disc is used for connecting a flywheel of the engine;

the device comprises a machine body and a barring shaft, wherein one end of the barring shaft is rotatably connected with the machine body;

a turning gear slidably sleeved on the turning shaft, the turning gear being configured to restrict rotation thereof relative to the turning shaft;

a shift fork, the barring gear being rotatable relative to the shift fork;

a pitch screw threadedly coupled to the shift fork, the shift fork configured to be restrained from rotation relative to the pitch screw, the pitch screw rotatable to drive the shift fork to move the barring gear in an axial direction of the barring axle to engage or disengage the barring gear with or from the chainring.

Preferably, the turning mechanism further comprises a baffle and a travel switch, one of the baffle and the travel switch is arranged on the machine body, and the other is arranged on the gear shifting fork; the travel switch is connected with a control power supply of the engine;

the baffle can be abutted against or separated from the travel switch so as to enable the control power supply to be switched on and off.

Preferably, the turning mechanism further comprises a positioning bolt, the positioning bolt is parallel to the turning shaft, one end of the positioning bolt is fixedly connected with the machine body, and the other end of the positioning bolt is connected with the gear shifting fork in a sliding mode along the axial direction of the positioning bolt.

Preferably, a containing groove is formed in the gear shifting fork, at least part of the barring gear is inserted into the containing groove along the radial direction of the barring gear, and a gap is formed between the outer peripheral wall of the barring gear and the bottom wall of the containing groove. Preferably, the disc axle is rotatably connected to the body through a rolling bearing.

Preferably, the turning mechanism further comprises a motor and a turning tool, and the turning shaft is selectively detachably connected to the output end of the motor or the turning tool.

Preferably, an output end of the motor is connected to the disc axle through a speed reducer.

Preferably, the turning mechanism further includes a guide member provided between an outer peripheral wall of the turning shaft and an inner peripheral wall of the turning gear, for guiding axial sliding of the turning gear with respect to the turning shaft.

Preferably, the guide assembly comprises an external spline arranged on the barring shaft and an internal spline arranged on the inner surface of the barring gear, and the internal spline is matched with the external spline.

Preferably, a locking assembly is arranged on the machine body and detachably connected with the shift fork, so that the shift fork can axially move or be fixed relative to the distance adjusting screw rod.

The utility model has the advantages that: the utility model provides a barring mechanism makes the position of gear shift fork in order to adjust gear shift fork for roll adjustment screw axial displacement through rotatory roll adjustment screw rod, utilizes the gear shift fork to drive the barring gear along the axial displacement of barring axle to make the barring gear with install the fluted disc meshing on the engine flywheel, finally reach and drive the rotatory purpose of engine crankshaft, this barring mechanism simple structure, it is with low costs.

Drawings

Fig. 1 is a partial cross-sectional view of a turning gear mechanism provided by the present invention;

fig. 2 is a partial schematic view of the turning mechanism structure provided by the present invention;

fig. 3 is an enlarged view of a in fig. 2.

In the figure:

1. a body; 2. a fluted disc; 3. a disc axle; 4. turning gears;

41. a shift fork; 42. adjusting the pitch of the screw rod; 43. positioning the bolt; 44. a distance adjusting handle;

51. a travel switch; 52. a baffle plate;

61. a motor; 62. and a speed reducer.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

As shown in fig. 1-3, the present embodiment provides a barring mechanism, which includes a fluted disc 2, a machine body 1, a barring axle 3, a barring gear 4, a shift fork 41 and a pitch adjusting screw 42, wherein the fluted disc 2 is used for connecting a flywheel of an engine; one end of the disc axle 3 is rotationally connected with the machine body 1; the turning gear 4 is sleeved on the turning axle 3 in a sliding mode, and the turning gear 4 can rotate relative to the gear shifting fork 41 and cannot rotate relative to the turning axle 3; the pitch adjusting screw 42 is in threaded connection with the shift fork 41, the shift fork 41 cannot rotate relative to the pitch adjusting screw 42, and the pitch adjusting screw 42 can rotate to drive the shift fork 41 to drive the barring gear 4 to move along the axial direction of the barring shaft 3, so that the barring gear 4 is meshed with or separated from the fluted disc 2.

The barring mechanism that this embodiment provided, through roll adjustment screw 42 drive shift fork 41 along roll adjustment screw 42 axial displacement to utilize shift fork 41 to promote barring gear 4 along the axial displacement of barring axle 3, make barring gear 4 and fluted disc 2 meshing, when barring axle 3 rotates, barring gear 4 follows a set axletree 3 and rotates, barring gear 4 drives fluted disc 2 and rotates, and fluted disc 2 will drive the crankshaft rotation of engine through the flywheel, realizes the barring. The turning mechanism is simple and convenient in operation mode, simple in structure and low in cost.

In order to avoid interference of the pitch adjusting screw 42 with the rotation of the toothed disc 2, in the embodiment, the pitch adjusting screw 42 is disposed on one side of the toothed disc 2 in the radial direction and spaced apart from the toothed disc 2.

Further, the barring gear provided by the embodiment further includes a baffle 52 and a travel switch 51, one of the baffle 52 and the travel switch 51 is disposed on the machine body 1, and the other is disposed on the shift fork 41; the travel switch 51 is connected with a control power supply of the engine; the barring gear 4 is meshed with the fluted disc 2, the baffle plate 52 is separated from the travel switch 51 so as to disconnect the travel switch 51 and control the power supply to be disconnected; the turning gear 4 is separated from the toothed disc 2, and the baffle plate 52 is abutted to the travel switch 51 to close the travel switch 51, so that the control power supply works normally. In this embodiment, the baffle 52 is fixed on the shift fork 41 through a bolt, the travel switch 51 is fixed on the machine body 1 through a gasket and a screw, and the baffle 52 and the travel switch 51 are matched to control the engine not to be started in the turning process, so that the safety of an operator is protected.

Further, the barring mechanism provided by the embodiment further includes a positioning bolt 43, the positioning bolt 43 is parallel to the barring axle 3, one end of the positioning bolt 43 is fixedly connected with the machine body 1, the other end of the positioning bolt 43 is slidably connected with the shift fork 41 along the axial direction thereof, and the rotation of the shift fork 41 relative to the pitch screw 42 is limited by the positioning bolt 43. In order to avoid the interference of the positioning bolt 43 with the rotation of the toothed disc 2, in the present embodiment, the positioning bolt 43 is disposed on one side of the toothed disc 2 in the radial direction and spaced apart from the toothed disc 2.

Further, be equipped with the holding tank on the shift fork 41, at least part of barring gear 4 inserts along its radial and locates in the holding tank and there is the clearance between the periphery wall of barring gear 4 and the diapire of holding tank to utilize shift fork 41 to promote barring gear 4 along barring axle 3 axial displacement, simultaneously through setting up the clearance, avoid shift fork 41 to influence the rotation of barring gear 4.

Further, the barring axle 3 is rotatably connected to the machine body 1 through a rolling bearing, so that the barring axle 3 rotates more smoothly, friction is reduced, and specifically, the two ends of the rolling bearing are provided with matched retaining rings for axially limiting the rolling bearing.

Further, the turning mechanism provided by the embodiment further includes a motor 61 and a turning tool, and the turning shaft 3 is selectively detachably connected to an output end of the motor 61 or the turning tool, so as to implement two turning modes of electric turning and manual turning. When the electric barring is adopted, the motor 61 is connected to the barring axle 3 through the speed reducer 62, specifically, the speed reducer 62 is fixed on the machine body 1 through a bolt, the input end of the speed reducer 62 is connected with the output end of the motor 61, the output end of the speed reducer 62 is detachably connected with the barring axle 3, and the motor 61 provides power required for barring. More specifically, one end of the disc axle 3 connected to the speed reducer 62 is provided with a reduction gear for meshing with an output gear of the speed reducer 62, thereby rotating the disc axle 3. When the manual turning gear is replaced, the speed reducer 62 needs to be detached, and the reduction gear and the output gear of the speed reducer need to be separated along the axial direction of the turning gear shaft 3. When the manual barring is adopted, the barring tool is detachably connected with the barring shaft 3, and the manual barring can be realized by manually rotating the barring tool.

Further, the turning mechanism provided by the present embodiment further includes a guide assembly disposed between the outer circumferential wall of the turning axle 3 and the inner circumferential wall of the turning gear 4, for guiding the axial sliding of the turning gear 4 relative to the turning axle 3. Specifically, in this embodiment, the guide way is the external splines, and the guide rail is the internal splines, is equipped with the external splines on barring axle 3, and the internal surface of barring gear 4 is equipped with the internal splines, and the internal splines forms the direction subassembly with the external splines cooperation, makes barring gear 4 more smooth and easy along the axial displacement of barring axle 3 to the moment of torsion of transmission is bigger when the spline setting can make barring axle 3 rotate and drive barring gear 4 and rotate. In other embodiments, a guide groove may be formed in one of the outer circumferential wall of the turning shaft 3 and the inner circumferential wall of the turning gear 4, and a guide protrusion capable of being inserted into the guide groove may be formed in the other one of the outer circumferential wall and the inner circumferential wall of the turning shaft 3, and the guide groove and the guide protrusion are slidably fitted in the axial direction of the turning shaft 3 to form a guide assembly.

Further, the body 1 is provided with a locking assembly, which is detachably connected to the shift fork 41, so that the shift fork 41 can move or be fixed axially relative to the pitch screw 42. Specifically, the locking assembly is a locking rod, a first locking hole is formed in the machine body 1, a second locking hole is formed in the shift fork 41, and when the barring mechanism is in a non-barring state, one end of the locking rod penetrates through the first locking hole and extends into the second locking hole, so that the shift fork 41 cannot axially move relative to the distance adjusting screw 42; when the barring mechanism is in the barring state, the lock lever is pulled out to separate the lock lever from the shift fork 41, so that the shift fork 41 can move in the axial direction of the pitch screw 42 when the pitch screw 42 rotates.

Further, the pitch adjusting screw 42 is provided with a pitch adjusting handle 44, so that the pitch adjusting handle 44 can be conveniently and manually rotated to rotate the pitch adjusting screw 42.

The working process is as follows: in the non-barring state, the locking assembly fixes the shift fork 41 relative to the distance adjusting screw 42, at the moment, the travel switch 51 is in contact with the baffle 52, the control power supply is in a closed state, the barring gear 4 and the fluted disc 2 installed on the flywheel are in a separated state, and the engine can normally work; when the barring is needed, the locking assembly is pulled out, the distance adjusting screw 42 is driven to rotate through the distance adjusting handle 44, so that the gear shifting fork 41 moves axially along the distance adjusting screw 42, the gear shifting fork 41 drives the barring gear 4 to move axially along the barring shaft 3, the barring gear 4 is meshed with a fluted disc 2 installed on a flywheel, at the moment, the travel switch 51 is separated from the baffle plate 52, the control power supply is in an off state, the engine cannot be started, the safety of an operator is protected, manual barring or electric barring is selected according to needs, structures corresponding to the two barring modes can drive the barring shaft 3 to rotate, the barring gear 4 is driven to rotate, the fluted disc 2 meshed with the barring gear 4 drives the flywheel to rotate, the crankshaft can still rotate to a specific angle under the condition that the engine is not started, and the assembly and disassembly of the engine are facilitated.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A barring mechanism, comprising:

the fluted disc (2) is used for connecting a flywheel of an engine;

the disc-type bicycle comprises a machine body (1) and a disc axle (3), wherein one end of the disc axle (3) is rotatably connected with the machine body (1);

a turning gear (4), wherein the turning gear (4) is slidably sleeved on the turning shaft (3), and the turning gear (4) is configured to limit the turning gear (4) to rotate relative to the turning shaft (3);

a shift fork (41), the turning gear (4) being rotatable relative to the shift fork (41);

a pitch screw (42) in threaded connection with the shift fork (41), the shift fork (41) being configured to restrict rotation of the shift fork (41) relative to the pitch screw (42), the pitch screw (42) being rotatable to drive the shift fork (41) to move the barring gear (4) in an axial direction of the barring axle (3) to engage or disengage the barring gear (4) with or from the chainring (2).

2. Turning gear according to claim 1, characterized in that it further comprises a shutter (52) and a travel switch (51), one of said shutter (52) and said travel switch (51) being provided on said machine body (1) and the other on said shift fork (41); the travel switch (51) is connected with a control power supply of the engine;

the shutter (52) can be brought into contact with or separated from the stroke switch (51) to open or close the control power supply.

3. Turning gear according to claim 1, characterized in that it further comprises a positioning bolt (43), said positioning bolt (43) being parallel to said disc axle (3), one end of said positioning bolt (43) being fixedly connected to said machine body (1) and the other end being slidably connected to said shift fork (41) along its axial direction.

4. Barring mechanism according to claim 1, characterized in that the shift fork (41) is provided with a housing groove in which at least part of the barring gear wheel (4) is radially inserted with a clearance between the peripheral wall of the barring gear wheel (4) and the bottom wall of the housing groove.

5. Turning gear according to claim 1, characterized in that the turning gear shaft (3) is rotatably connected to the machine body (1) by means of a rolling bearing.

6. Barring mechanism according to claim 1, characterized in that it further comprises a motor (61) and a barring tool, said barring axle (3) being selectively detachably connected to an output of said motor (61) or to said barring tool.

7. Turning gear according to claim 6, characterized in that the output of the motor (61) is connected to the turning gear shaft (3) through a speed reducer (62).

8. Turning gear according to claim 1, characterized in that it further comprises a guiding assembly provided between the outer peripheral wall of the turning axle (3) and the inner peripheral wall of the turning gear (4) for guiding the axial sliding of the turning gear (4) with respect to the turning axle (3).

9. Turning gear according to claim 8, characterized in that the guiding assembly comprises external splines on the turning axle (3) and internal splines on the inner surface of the turning gear (4), which internal splines cooperate with the external splines.

10. Barring mechanism according to any of the claims 1 to 9, characterized in that a locking assembly is provided on the body (1), which locking assembly is detachably connected to the shift fork (41) to enable the shift fork (41) to be axially moved or fixed with respect to the pitch screw (42).