CN209743431U - Bidirectional mechanical automatic synchronous clutch - Google Patents

Abstract

The utility model discloses a two-way mechanical automatic synchronization clutch is a two-way freewheel clutch of pure mechanical structure who is applied to transmission big moment of torsion in devices such as naval vessel, steam turbine, can realize power input and output automatic joint and break away from. The clutch realizes the axial movement of the sliding component by utilizing the bevel gear, and combines the ratchet wheel pawl structure and the tooth type coupler, thereby combining the advantages that the former can realize one-way self-locking and the latter can transmit large torque. The clutch can change the engagement direction of the ratchet wheel and the pawl by pressing and rotating the reversing device by 180 degrees, thereby realizing bidirectional clutch. Meanwhile, a structure for reducing the abrasion of the pawl is designed in the clutch, so that the service life of the clutch is greatly prolonged.

Description

Bidirectional mechanical automatic synchronous clutch

Technical Field

The utility model relates to a clutch field, concretely relates to two-way mechanical automatic synchronization clutch with ratchet pawl structure and tooth-like shaft coupling.

Background

A mechanical automatic synchronous clutch is a purely mechanical device that performs the function of, in summary, engaging the clutch when the speed of rotation on the input side tends to exceed that on the output side, the output side is driven; when the input side rotation speed tends to decrease relative to the output side, a reverse torque is generated and the clutch is disengaged. The main difference between the mechanical automatic synchronous clutch and the common overrunning clutch is that the maximum torque which can be transmitted by the traditional overrunning clutch is very limited due to the structural limitation, and the mechanical automatic synchronous clutch not only can realize overrunning transmission, but also can transmit larger torque than the common overrunning clutch, and is widely applied to devices such as ships, turbines and the like.

at present, main manufacturers of mechanical automatic synchronous clutches comprise British SSS clutch companies, Switzerland MAAG, Germany RENK and other companies, and are used in a plurality of warships and turbine devices at home, but most of the mechanical automatic synchronous clutches depend on imports, and the use cost is high.

In order to meet the automatic synchronous clutch function in large-torque transmission in devices such as ships and turbines, an automatic synchronous clutch is necessary to be designed independently.

Disclosure of Invention

The utility model discloses an aim at need the automatically synchronized clutch function in to devices such as present naval vessels, steam turbine, and traditional clutch can't satisfy, designs out a section and can satisfy two-way separation and reunion operating mode requirement and can be applied to the two-way mechanical automatically synchronized clutch of high-power, big moment of torsion transmission.

The technical scheme of the utility model is that:

A bidirectional mechanical automatic synchronous clutch comprises an output flange plate 1, an outer bevel gear shaft end cover 2, a sliding sleeve end cover 3, an output sleeve 4, a pawl cover 5, a spring 6, a pawl 7, a movable ratchet wheel block 8, a right-handed outer bevel gear shaft 9, a sliding sleeve 10, a buffer cylinder end cover 11, a buffer cylinder 12 and an input flange plate 13, and is characterized in that the right-handed outer bevel gear shaft 9 and the buffer cylinder 12 are fixed on the left side of the input flange plate 13, the buffer cylinder 12 is positioned outside the right-handed outer bevel gear shaft 9, the buffer cylinder end cover 11 is fixed on the left side of the buffer cylinder 12, and the outer bevel gear shaft end cover 2 is fixed on the left side of the; the sliding sleeve 10 is sleeved on the right-handed outer bevel gear shaft 9, inner bevel teeth are machined in the sliding sleeve, outer straight teeth are machined on the outer portion of the sliding sleeve, the inner bevel teeth are meshed with the outer bevel teeth of the right-handed outer bevel gear shaft 9, the outer straight teeth are meshed with the inner straight teeth in the output sleeve 4, the sliding sleeve end cover 3 is fixed on the left side of the sliding sleeve 10, five deep grooves are formed between the sliding sleeve 10 and the sliding sleeve end cover 3, movable ratchet wheel blocks 8 are installed in the grooves, and small holes are formed in the lower portions of the grooves and used for storing lubricating oil; two groups of inner straight teeth are processed inside the output sleeve 4, the outer straight teeth of the sliding sleeve 10 can be meshed with different inner straight teeth according to different joint directions, and the output sleeve 4 is connected with the output flange plate 1 through screws; the output sleeve 4 is provided with a pawl cover 5, the inside of the pawl cover 5 is connected with a spring 6, a pawl 7 is arranged under the spring 6, the pawl cover 5, the spring 6 and the pawl 7 are connected into a whole to form a reversing device, the outer side of the bottom of the pawl cover 5 is provided with four limiting claws, four clamping grooves are arranged above the inner side of the contact part of the output sleeve 4 and the pawl cover 5, the limiting claws are positioned in the clamping grooves during working so as to limit and fix the reversing device, and the direction of the pawl 7 is changed by pressing and rotating the reversing device for 180 degrees every time, so that the meshing direction of the movable ratchet block 8 and the pawl 7 is changed, and the bidirectional clutch is realized.

The utility model has the advantages that:

1) The synchronous connection and disconnection of the transmitted large torque occasion is completely completed by the movement between the mechanical structures, the operation is stable and reliable, and the synchronous connection and disconnection device is suitable for the transmission occasions with large torque and large power.

2) The automatic synchronous clutch can realize the switching between forward rotation and reverse rotation synchronous connection through the adjustment of the reversing device by adopting a ratchet wheel and pawl structure capable of changing the meshing direction.

Drawings

FIG. 1 is a front view of a half-section structure of the present invention;

FIG. 2 is a left-view full-section structural schematic diagram of the present invention.

In the figure, an output flange plate 1, an outer bevel gear shaft end cover 2, a sliding sleeve end cover 3, an output sleeve 4, a pawl cover 5, a spring 6, a pawl 7, a movable ratchet wheel block 8, a right-hand outer bevel gear shaft 9, a sliding sleeve 10, a buffer cylinder end cover 11, a buffer cylinder 12 and an input flange plate 13.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and 2.

a bidirectional mechanical automatic synchronous clutch comprises an output flange plate 1, an outer bevel gear shaft end cover 2, a sliding sleeve end cover 3, an output sleeve 4, a pawl cover 5, a spring 6, a pawl 7, a movable ratchet wheel block 8, a right-handed outer bevel gear shaft 9, a sliding sleeve 10, a buffer cylinder end cover 11, a buffer cylinder 12 and an input flange plate 13, and is characterized in that the right-handed outer bevel gear shaft 9 and the buffer cylinder 12 are fixed on the left side of the input flange plate 13, the buffer cylinder 12 is positioned outside the right-handed outer bevel gear shaft 9, the buffer cylinder end cover 11 is fixed on the left side of the buffer cylinder 12, and the outer bevel gear shaft end cover 2 is fixed on the left side of the; the sliding sleeve 10 is sleeved on the right-handed outer bevel gear shaft 9, inner bevel teeth are machined in the sliding sleeve, outer straight teeth are machined on the outer portion of the sliding sleeve, the inner bevel teeth are meshed with the outer bevel teeth of the right-handed outer bevel gear shaft 9, the outer straight teeth are meshed with the inner straight teeth in the output sleeve 4, the sliding sleeve end cover 3 is fixed on the left side of the sliding sleeve 10, five deep grooves are formed between the sliding sleeve 10 and the sliding sleeve end cover 3, movable ratchet wheel blocks 8 are installed in the grooves, and small holes are formed in the lower portions of the grooves and used for storing lubricating oil; two groups of inner straight teeth are processed inside the output sleeve 4, the outer straight teeth of the sliding sleeve 10 can be meshed with different inner straight teeth according to different joint directions, and the output sleeve 4 is connected with the output flange plate 1 through screws; the output sleeve 4 is provided with a pawl cover 5, the inside of the pawl cover 5 is connected with a spring 6, a pawl 7 is arranged under the spring 6, the pawl cover 5, the spring 6 and the pawl 7 are connected into a whole to form a reversing device, the outer side of the bottom of the pawl cover 5 is provided with four limiting claws, four clamping grooves are arranged above the inner side of the contact part of the output sleeve 4 and the pawl cover 5, the limiting claws are positioned in the clamping grooves during working so as to limit and fix the reversing device, and the direction of the pawl 7 is changed by pressing and rotating the reversing device for 180 degrees every time, so that the meshing direction of the movable ratchet block 8 and the pawl 7 is changed, and the bidirectional clutch is realized.

The working process is as follows:

Clockwise engagement and counter-clockwise disengagement. Firstly, the input flange 13 is connected with the power input end through bolts and nuts, and the output flange 1 is connected with the power output end. The pawl cover 5 is then depressed and the reverser rotated 180 degrees, aligning the pawl 7 in a clockwise direction to engage the movable ratchet block 8. Under the action of the power input end, the input flange plate 13 drives the right-handed outer bevel gear shaft 9 to rotate clockwise from rest, meanwhile, the output end is kept static instantaneously, and the sliding sleeve 10 is matched with the right-handed outer bevel gear shaft 9 through the inner and outer bevel gear pairs, so that the sliding sleeve 10 also rotates along with the right-handed outer bevel gear shaft 9. Under the action of centrifugal force, the upper end of the movable ratchet wheel block 8 slides out of the sliding sleeve 10, when the movable ratchet wheel block 8 contacts the pawl 7, the movable ratchet wheel block and the pawl start to be meshed to form self-locking, the self-locking of the movable ratchet wheel block 8 and the pawl 7 limits the rotation of the sliding sleeve 10 due to the fact that the output end is loaded, and the sliding sleeve 10 starts to axially translate leftwards under the action of axial component force of the right-handed outer bevel gear shaft 9. Meanwhile, the movable ratchet wheel block 8 and the pawl 7 are gradually separated, and the straight teeth on the outer side of the sliding sleeve 10 are gradually meshed with the left straight teeth in the output sleeve 4; when the straight teeth on the outer side of the sliding sleeve 10 are completely meshed with the left straight teeth in the output sleeve 4, the movable ratchet block 8 and the pawl 7 are completely separated, and finally the sliding sleeve 10 stops translating under the axial limitation of the buffer cylinder end cover 11. When the translation of the sliding sleeve 10 stops, the clutch starts to transmit power. From this point, as long as the input rotation speed is greater than the output rotation speed, the power of input will be transmitted to the outer helical gear axle 9 of dextrorotation along input flange 13, will be transmitted power to sliding sleeve 10 by the outer helical gear axle 9 of dextrorotation under the effect of the outer helical gear pair of inside and outside between the outer helical gear axle 9 of dextrorotation and sliding sleeve 10, then will be transmitted power to output sleeve 4 by sliding sleeve 10 under the effect of the outer spur gear pair of inside and outside between sliding sleeve 10 and output sleeve 4, output sleeve 4 transmits output flange 1, finally transmit power to the output side through output flange 1.

when the rotating speed of the input end is lower than that of the output end, the inner and outer straight gear pairs between the sliding sleeve 10 and the output sleeve 4 limit the rotation of the sliding sleeve 10, the right-handed outer bevel gear shaft 9 can generate a rightward axial force on the sliding sleeve 10, so that the sliding sleeve 10 translates rightward along the right-handed outer bevel gear shaft 9 until the inner and outer straight gear pairs between the sliding sleeve 10 and the output sleeve 4 are completely separated, and meanwhile, the movable ratchet block 8 and the pawl 7 gradually return to the same plane. Because the rotating speed of the output end is higher than that of the input end, the relative rotating directions of the movable ratchet block 8 and the pawl 7 are opposite to that of the engagement, self-locking cannot be formed, the movable ratchet block is in a disengagement state, and the movable ratchet block 8 and the pawl 7 cannot limit the rotation of the sliding sleeve 10. At this time, the sliding sleeve 10 rotates together with the right-handed external bevel gear shaft 9 as it is, and stops the axial movement, the sliding sleeve 10 is completely separated from the output sleeve 4, the input end and the output end are not engaged, and the power transmission is finished. When the input end stops rotating, the movable ratchet block 8 is gradually retracted into the sliding sleeve 10 due to the reduction of centrifugal force, and at the moment, the movable ratchet block 8 is not in contact with the pawl 7, so that the abrasion between the movable ratchet block and the pawl is reduced, and the service life of the clutch is prolonged. If the input rotation speed is higher than the output rotation speed, the process is repeated.

when the ratchet wheel needs to be engaged anticlockwise, and is disengaged clockwise, the reversing device is only pressed and rotated for 180 degrees in the reverse direction, the pawl 7 is adjusted to be engaged with the movable ratchet wheel block 8 anticlockwise, and the working process of the ratchet wheel is basically the same as that of clockwise engagement and anticlockwise disengagement.

Claims (1)

1. A bidirectional mechanical automatic synchronous clutch comprises an output flange (1), an outer bevel gear shaft end cover (2), a sliding sleeve end cover (3), an output sleeve (4), a pawl cover (5), a spring (6), a pawl (7), a movable ratchet wheel block (8), a right-hand outer bevel gear shaft (9), a sliding sleeve (10), a buffer cylinder end cover (11), a buffer cylinder (12) and an input flange (13), and is characterized in that the right-hand outer bevel gear shaft (9) and the buffer cylinder (12) are fixed on the left side of the input flange (13), the buffer cylinder (12) is positioned outside the right-hand outer bevel gear shaft (9), the buffer cylinder end cover (11) is fixed on the left side of the buffer cylinder (12), and the outer bevel gear shaft end cover (2) is fixed on the left side of the right-hand outer bevel; the sliding sleeve (10) is sleeved on the right-handed outer bevel gear shaft (9), inner bevel teeth are machined in the sliding sleeve, outer straight teeth are machined on the outer portion of the sliding sleeve, the inner bevel teeth are meshed with the outer bevel teeth of the right-handed outer bevel gear shaft (9), the outer straight teeth are meshed with the inner straight teeth in the output sleeve (4), the sliding sleeve end cover (3) is fixed on the left side of the sliding sleeve (10), five deep grooves are formed between the sliding sleeve (10) and the sliding sleeve end cover (3), movable ratchet wheel blocks (8) are installed in the grooves, and small holes are formed in the lower portions of the grooves and used for storing lubricating oil; two groups of inner straight teeth are processed inside the output sleeve (4), the outer straight teeth of the sliding sleeve (10) can be meshed with different inner straight teeth according to different joint directions, and the output sleeve (4) is connected with the output flange plate (1) through screws; the output sleeve (4) is provided with a pawl cover (5), the pawl cover (5) is internally connected with a spring (6), a pawl (7) is arranged under the spring (6), the pawl cover (5), the spring (6) and the pawl (7) are connected into a whole to form a reversing device, four limiting claws are arranged on the outer side of the bottom of the pawl cover (5), four clamping grooves are formed in the upper side of the inner side of the contact part of the output sleeve (4) and the pawl cover (5), and the limiting claws are positioned in the clamping grooves to limit the fixed reversing device during working, so that the direction of the pawl (7) is changed by pressing and rotating the reversing device 180 degrees every time, the meshing direction of a movable ratchet wheel block (8) and the pawl (7) is changed, and therefore bidirectional clutch is achieved.