CN218347481U - Jigger starting pneumatic motor - Google Patents

Abstract

The utility model discloses a barring starts air motor relates to engine technical field. A pre-meshing air inlet hole and a pre-meshing air outlet hole which are communicated with the air chamber are formed in a front shell of the barring starting air motor, the pre-meshing air inlet hole is connected with an air source through a first pipeline, and a first switch valve is arranged on the first pipeline; the starting air inlet is connected with the first pipeline through a second pipeline, and the second pipeline is provided with an air relay; the pre-meshed air outlet is connected with the air relay through a third pipeline, and a second switch valve is arranged on the third pipeline; a barring structure matched with a barring wrench is arranged on the driving gear; when the first pipeline is conducted by the first switching valve, the third pipeline is conducted or cut off by the second switching valve, so that the barring starting air motor enters a starting mode or a manual barring mode. The utility model discloses barring start-up air motor will barring function and start-up function collection in an organic whole, has solved and has arranged the difficulty, problem that occupation space is big.

Description

Jigger starting pneumatic motor

Technical Field

The utility model relates to the technical field of engines, concretely relates to barring starts pneumatic motor.

Background

At present, an engine is provided with two independent devices, namely a barring gear and a starting motor, so as to execute barring operation and normal starting operation, and when the barring operation is required, a barring gear of the barring gear is meshed with a flywheel gear ring of the engine to drive the flywheel gear ring of the engine to rotate at a low speed; when normal starting operation is needed, a starting gear of the starting motor is meshed with the engine flywheel gear ring to drive the engine flywheel gear ring to rotate at a high speed.

However, the turning operation and the normal starting operation are respectively executed by a set of independent devices, and each set of device is required to be matched with the flywheel gear ring of the engine, so that the problems of difficult arrangement and large occupied space exist.

SUMMERY OF THE UTILITY MODEL

Defect more than to prior art exists, the utility model provides a barring starts pneumatic motor, this barring starts pneumatic motor with the barring function with start function collection in an organic whole, has solved and has arranged the difficulty, problem that occupation space is big.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the jigger starting air motor comprises a bearing seat, a front shell and a rear shell which are arranged on two opposite sides of the bearing seat, wherein the rear shell and the bearing seat enclose a rear cavity with a starting air inlet and an exhaust port, and a rotary driving assembly is arranged in the rear cavity; the front shell and the bearing seat enclose a front cavity with a shaft hole, a motor piston and a motor elastic piece for resetting the motor piston are arranged in the front cavity, and the inner wall of the motor piston and the front cavity and the bearing seat enclose an air chamber; an output assembly is rotationally connected in the motor piston, and a driving gear which is used for extending out of the shaft hole and is meshed with the flywheel gear ring of the engine is arranged at the front end of the output assembly; the rear end of the output assembly penetrates through the bearing seat and is in axial sliding and synchronous rotating connection with the rotary driving assembly, a pre-meshing air inlet hole and a pre-meshing air outlet hole which are communicated with the air chamber are formed in the front shell, the pre-meshing air inlet hole is connected with an air source through a first pipeline, and a first switch valve is arranged on the first pipeline; the starting air inlet is connected with the first pipeline through a second pipeline, and an air relay is arranged on the second pipeline; the pre-meshed air outlet is connected with the air relay through a third pipeline, and a second switch valve is arranged on the third pipeline; the driving gear is provided with a barring structure used for being matched with a barring wrench; when the first pipeline is conducted by the first switching valve, the third pipeline is conducted or cut off by the second switching valve, so that the barring starting air motor enters a starting mode or a manual barring mode.

Wherein, the barring structure is an outer hexagonal head or an inner hexagonal hole.

Wherein, the first switch valve is a two-position three-way electromagnetic valve.

Wherein, the second switch valve is a two-position three-way electromagnetic valve.

Wherein, the second switch valve is a two-position two-way valve.

The two-position two-way valve is an electromagnetic valve or a manual valve.

The air relay comprises an air relay shell with an installation cavity, an air relay piston and an air relay elastic piece, wherein the air relay piston and the air relay elastic piece are arranged in the installation cavity, the air relay shell is provided with an air relay air inlet, an air relay air outlet and a control air port which are communicated with the installation cavity, the air relay air inlet and the air relay air outlet are connected to the second pipeline, the control air port is connected with the third pipeline, air entering from the control air port is used for pushing the air relay piston to move so as to conduct the air relay air inlet and the air relay air outlet, and the air relay elastic piece is used for resetting the air relay piston so as to cut off the air relay air inlet and the air relay air outlet.

The output assembly comprises an input shaft and an output shaft, a first bearing is arranged in the motor piston, the input shaft is fixedly arranged in the first bearing, the front end of the input shaft is connected with the rear end of the output shaft through a clutch structure, and the rear end of the input shaft is axially moved and synchronously and rotationally connected with the rotary driving assembly; a second bearing is arranged in the front cavity corresponding to the shaft hole, the output shaft is arranged in the second bearing in a sliding manner, and the driving gear is arranged at the front end of the output shaft; the motor elastic element is sleeved on the output assembly and located between the motor piston and the second bearing.

The rotary driving assembly comprises a rotor, a transmission gear and a reduction gear, and the rotor is rotatably arranged on the rear shell; the reduction gear is rotatably arranged on the rear shell and the bearing seat and is connected with the input shaft through a spline; the transmission gear is installed on the rotor and meshed with the reduction gear.

By adopting the technical scheme, the beneficial effects of the utility model are that:

the utility model provides a barring starting air motor, when first ooff valve switches on first pipeline, when the second ooff valve switches on the third pipeline, compressed air gets into the air chamber through the meshing inlet port in advance, and promote motor piston and output assembly axial displacement make drive gear and engine flywheel ring gear mesh, after motor piston and output assembly moved certain distance, the meshing inlet port in advance communicates with each other through air chamber and meshing venthole in advance, compressed air arrives air relay department through meshing venthole in advance and opens air relay and make the second pipeline switch on, at this moment, a large amount of compressed air gets into the back chamber and orders the high-speed rotation of rotary driving assembly through the starting air inlet, because the rear end of output assembly and rotary driving assembly axial slip and synchronous rotation are connected, therefore, order to drive engine ring gear flywheel high-speed rotation through the high-speed rotation of rotary driving assembly, the starting operation of engine has just been realized; when the first pipeline is conducted by the first switch valve and the third pipeline is closed by the second switch valve, compressed air enters the air chamber through the pre-meshing air inlet hole and pushes the motor piston and the output assembly to move axially to enable the driving gear to be meshed with the engine flywheel gear ring, after the motor piston and the output assembly move for a certain distance, the pre-meshing air inlet hole is communicated with the pre-meshing air outlet hole through the air chamber, the compressed air reaches the second switch valve through the pre-meshing air outlet hole, and the second switch valve is in a closed state, so that the compressed air cannot reach the air relay, the air relay cannot be opened, the rotary driving assembly cannot drive the driving gear to rotate, at the moment, the operator can install the barring wrench on the barring structure, the driving gear is moved by the wrench to rotate so as to drive the engine flywheel gear ring to rotate slowly, and the barring operation of the engine is achieved. Compared with the prior art, the utility model discloses barring starts the air motor and will start function and barring function collection in an organic whole, has realized the start operation and the barring operation of engine through same device, and its simple structure, occupation space is little, has solved and has arranged the difficulty, and the arrangement space of engine has been saved greatly to the big problem of occupation space.

Drawings

Fig. 1 is a schematic structural view of a barring starting air motor of the present invention;

in the figure: 1. a bearing seat; 2. a front housing; 21. a gas chamber; 22. pre-engaging the air inlet holes; 23. pre-engaging the air outlet holes; 3. a rear housing; 31. starting the air inlet; 32. an exhaust port; 4. a motor piston; 5. a motor elastic member; 6. a drive gear; 61. a barring structure; 7. a first pipeline; 8. a first on-off valve; 9. a second pipeline; 10. a gas relay device; 11. a third pipeline; 12. a second on-off valve; 13. an input shaft; 14. an output shaft; 15. a first bearing; 16. a second bearing; 17. a shaft sleeve; 18. a first bearing gland; 19. a second bearing cap; 20. a rotor; 24. a transmission gear; 25. a reduction gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, the barring starting air motor comprises a bearing seat 1, and a front shell 2 and a rear shell 3 which are arranged at two opposite sides of the bearing seat 1, wherein the rear shell 3 and the bearing seat 1 enclose a rear cavity with a starting air inlet 31 and an exhaust port 32, and a rotary driving assembly is arranged in the rear cavity; a front cavity with a shaft hole is formed by the front shell 2 and the bearing seat 1 in a surrounding manner, a motor piston 4 and a motor elastic piece 5 for resetting the motor piston 4 are arranged in the front cavity, and an air chamber 21 is formed by the motor piston 4, the inner wall of the front cavity and the bearing seat 1 in a surrounding manner; an output component is rotationally connected in the motor piston 4, and the front end of the output component is provided with a driving gear 6 which is used for extending out of a shaft hole and is meshed with a flywheel gear ring (not shown in the figure) of an engine; the rear end of the output assembly penetrates through the bearing seat 1 and is connected with the rotary driving assembly in an axial sliding and synchronous rotating mode.

Meanwhile, a pre-meshing air inlet hole 22 and a pre-meshing air outlet hole 23 which are communicated with the air chamber 21 are formed in the front shell 2, the pre-meshing air inlet hole 22 is connected with an air source through a first pipeline 7, and a first switch valve 8 is arranged on the first pipeline 7; the starting air inlet 31 is connected with the first pipeline 7 through a second pipeline 9, and an air relay 10 is arranged on the second pipeline 9; the pre-meshing air outlet 23 is connected with the air relay 10 through a third pipeline 11, and a second switch valve 12 is arranged on the third pipeline 11; the driving gear 6 is provided with a barring structure 61 for cooperating with a barring wrench (not shown in the figure); when the first switching valve 8 conducts the first pipeline 7, the turning starting air motor enters a starting mode or a manual turning mode by conducting or cutting off the third pipeline 11 through the second switching valve 12.

Specifically, the motor piston 4 includes a piston head portion and a piston rod portion that are connected together, the piston head portion is slidably disposed in the front cavity, the piston rod portion is slidably disposed in the bearing seat 1, and sealing structures are disposed between the inner walls of the piston head portion and the front cavity, between the piston rod portion and the bearing seat 1, and between the front shell 2 and the bearing seat 1.

The output assembly comprises an input shaft 13 and an output shaft 14, a first bearing 15 is arranged in the piston head of the motor piston 4, the input shaft 13 is fixedly arranged in an inner ring of the first bearing 15, and the front end of the input shaft 13 is connected with the rear end of the output shaft 14 through a clutch structure (the clutch structure is the prior art, which is not described herein, and any clutch structure capable of realizing the engagement or disengagement function in the prior art is included); the rear end of the input shaft 13 is connected with the rotary driving component in an axial movement and synchronous rotation manner; a second bearing 16 is arranged in the front cavity corresponding to the shaft hole, an output shaft 14 is arranged in the second bearing 16 in a sliding manner, and a driving gear 6 is arranged at the front end of the output shaft 14; the motor elastic part 5 is sleeved on the output assembly and is positioned between the motor piston 4 and the second bearing 16.

Specifically, a shaft sleeve 17 is fixedly arranged on the output shaft 14, and the shaft sleeve 17 is sleeved in the second bearing 16 and is in clearance fit with the second bearing 16; the motor elastic part 5 is preferably a spring, a first bearing cover 18 for pressing the first bearing 15 and a second bearing cover 19 for pressing the second bearing 16 are sleeved on the output assembly, and two ends of the spring are respectively sleeved and abutted against the first bearing cover 18 and the second bearing cover 19.

The rotary driving assembly comprises a rotor 20, a transmission gear 24 and a reduction gear 25, wherein the rotor 20 is rotatably arranged on the rear shell 3 through a bearing; the reduction gear 25 is rotatably mounted on the rear shell 3 and the bearing seat 1 through a bearing, the reduction gear 25 is connected with the input shaft 13 through a spline, and the spline can realize the functions of axial movement and synchronous rotation; the transmission gear 24 is mounted on the rotor 20, and the transmission gear 24 is engaged with the reduction gear 25.

The barring structure 61 in this embodiment is an outer hexagon head, and in practical application, the barring structure 61 may also adopt an inner hexagon hole, specifically selected according to actual requirements, which is not limited in this embodiment.

The first switch valve 8 in this embodiment is a two-position three-way electromagnetic valve, a port P and a port a of the two-position three-way electromagnetic valve are connected to the first pipeline 7, and a port T of the two-position three-way electromagnetic valve is communicated with the outside. When the port P is communicated with the port A, the first pipeline 7 is communicated; when the port A is communicated with the port T, the pre-meshed air inlet 22 is communicated with the outside, and the pressure relief of the air chamber 21 is realized.

The second switch valve 12 in this embodiment is also a two-position three-way electromagnetic valve, a port P and a port a of the two-position three-way electromagnetic valve are connected to the third pipeline 11, and a port T of the two-position three-way electromagnetic valve is communicated with the outside. When the port P is communicated with the port A, the third pipeline 11 is communicated; when the port A is communicated with the port T, the control air port of the air relay 10 is communicated with the outside, so that the pressure relief of the air relay 10 is realized.

In practical applications, the second switch valve 12 may also be a two-position two-way valve, and the two-position two-way valve may also be an electromagnetic valve or a manual valve, which is specifically selected according to actual requirements, which is not limited in this embodiment. When the second on-off valve 12 is a two-position two-way valve, the gas relay 10 is provided with a pressure relief valve.

The gas relay 10 in the embodiment comprises a gas relay shell with an installation cavity, a gas relay piston and a gas relay elastic part, wherein the gas relay piston and the gas relay elastic part are arranged in the installation cavity, a gas relay air inlet communicated with the installation cavity, a gas relay air outlet and a control air port are arranged on the gas relay shell, the gas relay air inlet and the gas relay air outlet are connected to a second pipeline 9, the control air port is connected with a third pipeline 11, gas entering from the control air port is used for pushing the gas relay piston to move so as to conduct the gas relay air inlet and the gas relay air outlet, and the gas relay elastic part is used for resetting the gas relay piston so as to cut off the gas relay air inlet and the gas relay air outlet. Wherein, the elastic part of the gas relay adopts a spring.

When the first switch valve 8 is communicated with the first pipeline 7, the second switch valve is communicated with the third pipeline 11, compressed air enters the air chamber 21 through the pre-meshing air inlet hole 22, the motor piston 4 and the output assembly are pushed to move, the driving gear 6 is meshed with the flywheel gear ring of the engine, after the motor piston 4 and the output assembly move for a certain distance, the pre-meshing air inlet hole 22 is communicated with the pre-meshing air outlet hole 23 through the air chamber 21, the compressed air reaches the position of the air relay 10 through the pre-meshing air outlet hole 23, the air relay 10 is opened, the second pipeline 9 is communicated, at the moment, a large amount of compressed air enters the rear cavity through the starting air inlet 31 and drives the rotor 20 to rotate at a high speed, and the driving gear 6 is driven by the rotor 20 to rotate at a high speed to drive the flywheel gear ring of the engine to rotate at a high speed, so that the starting operation of the engine is realized.

When the first pipeline 7 is conducted by the first switch valve 8, the third pipeline 11 is closed by the second switch valve 12, compressed air enters the air chamber 21 through the pre-meshing air inlet 22, and pushes the motor piston 4 and the output assembly to move so that the driving gear 6 is meshed with the flywheel gear ring of the engine, after the motor piston 4 and the output assembly move for a certain distance, the pre-meshing air inlet 22 is communicated with the pre-meshing air outlet 23 through the air chamber 21, the compressed air reaches the second switch valve 12 through the pre-meshing air outlet 23, and because the second switch valve 12 is in a closed state, the compressed air cannot reach the air relay 10, so that the air relay 10 cannot be opened, the driving gear 6 cannot be driven to rotate by the rotor 20, at this time, an operator can install the barring wrench on the barring structure 61, and move the driving gear 6 to rotate through the barring so as to drive the flywheel gear ring of the engine to rotate slowly, thereby realizing the barring operation of the engine.

The utility model discloses barring start-up air motor will start function and barring function collection in an organic whole, has realized the start-up operation and the barring operation of engine through same device, and its simple structure, occupation space is little, has solved and has arranged the difficulty, and the problem that occupation space is big has saved the space of arranging of engine greatly.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative work from the above conception, and all the changes fall within the protection scope of the present invention.

Claims (9)

1. The jigger starting air motor comprises a bearing seat, a front shell and a rear shell which are arranged on two opposite sides of the bearing seat, wherein the rear shell and the bearing seat enclose a rear cavity with a starting air inlet and an exhaust port, and a rotary driving assembly is arranged in the rear cavity; the front shell and the bearing seat enclose a front cavity with a shaft hole, a motor piston and a motor elastic piece for resetting the motor piston are arranged in the front cavity, and the inner wall of the motor piston, the front cavity and the bearing seat enclose an air chamber; an output assembly is rotationally connected in the motor piston, and a driving gear which is used for extending out of the shaft hole and is meshed with the flywheel gear ring of the engine is arranged at the front end of the output assembly; the rear end of the output component penetrates through the bearing seat and is in axial sliding and synchronous rotating connection with the rotary driving component,

the front shell is provided with a pre-meshing air inlet hole and a pre-meshing air outlet hole which are communicated with the air chamber, the pre-meshing air inlet hole is connected with an air source through a first pipeline, and the first pipeline is provided with a first switch valve; the starting air inlet is connected with the first pipeline through a second pipeline, and an air relay is arranged on the second pipeline; the pre-meshed air outlet is connected with the air relay through a third pipeline, and a second switch valve is arranged on the third pipeline; the driving gear is provided with a barring structure used for being matched with a barring wrench; when the first pipeline is conducted by the first switching valve, the third pipeline is conducted or cut off by the second switching valve, so that the barring starting air motor enters a starting mode or a manual barring mode.

2. The barring pneumatic motor of claim 1 wherein the barring structure is an exterior hex head or an interior hex bore.

3. The jigger starting air motor of claim 1, wherein the first switching valve is a two-position three-way solenoid valve.

4. The jigger starting air motor of claim 1, wherein the second switching valve is a two-position three-way solenoid valve.

5. The barring starting air motor according to claim 1 wherein the second switch valve is a two-position two-way valve.

6. The barring pneumatic motor according to claim 5 wherein the two position two way valve is a solenoid valve or a manual valve.

7. The jigger starting air motor according to claim 1, wherein the relay includes a relay housing having a mounting cavity, and a relay piston and a relay elastic member which are provided in the mounting cavity, the relay housing is provided with a relay air inlet, a relay air outlet and a control air port which are communicated with the mounting cavity, the relay air inlet and the relay air outlet are connected to the second pipe, the control air port is connected to the third pipe, air introduced from the control air port is used to push the relay piston to move so as to communicate the relay air inlet and the relay air outlet, and the relay elastic member is used to reset the relay piston so as to cut off the relay air inlet and the relay air outlet.

8. The jigger starting gas motor as claimed in any one of claims 1 to 7, wherein the output assembly includes an input shaft and an output shaft, a first bearing is provided in the motor piston, the input shaft is fixedly provided in the first bearing, and a front end of the input shaft is connected with a rear end of the output shaft through a clutch structure, and a rear end of the input shaft is axially and synchronously rotationally connected with the rotary drive assembly; a second bearing is arranged in the front cavity corresponding to the shaft hole, the output shaft is arranged in the second bearing in a sliding mode, and the driving gear is arranged at the front end of the output shaft; the motor elastic piece is sleeved on the output assembly and is positioned between the motor piston and the second bearing.

9. The barring air motor according to claim 8 wherein said rotary drive assembly includes a rotor, a drive gear and a reduction gear, said rotor being rotatably mounted on said rear housing; the reduction gear is rotatably arranged on the rear shell and the bearing seat and is connected with the input shaft through a spline; the transmission gear is installed on the rotor and meshed with the reduction gear.

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