CN217206718U

CN217206718U - Novel cycloid hydraulic motor

Info

Publication number: CN217206718U
Application number: CN202220677171.8U
Authority: CN
Inventors: 盛伟; 阚亚威; 吴方明; 鞠顺
Original assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Current assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-16
Anticipated expiration: 2032-03-25

Abstract

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to a novel cycloid hydraulic motor. The utility model discloses a novel cycloid hydraulic motor comprises back cover, backup pad, stator, connecting plate, body shell and protecgulum, and the left opening part of tooth's socket is equipped with spacing post, and the right flank of connecting plate has seted up spacing groove, and the inside of spacing post has seted up the constant head tank, is equipped with the reference column on the needle teeth left end face, through spacing post and spacing groove joint, fixes a position when being convenient for the stator equipment, and reference column and constant head tank joint simultaneously avoid the needle teeth to slide from the tooth's socket, the needle teeth equipment of being convenient for; the lock position inslot is equipped with first helping hand subassembly, is equipped with second helping hand subassembly in the constant head tank, is equipped with third helping hand subassembly in the recess of connecting plate, is equipped with fourth helping hand subassembly between output shaft outer anchor ring and the inner wall that holds the chamber, is equipped with fifth helping hand subassembly between the right flank of protecgulum and the output shaft, through five helping hand subassemblies, can reduce the friction between internal mechanism, promotes the life of motor, reduces the oil circuit and pollutes.

Description

Novel cycloid hydraulic motor

Technical Field

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to a novel cycloid hydraulic motor.

Background

The cycloid motor is generally divided into an end surface flow distribution cycloid hydraulic motor and a shaft flow distribution cycloid hydraulic motor, wherein the end surface flow distribution cycloid hydraulic motor adopts an advanced stud type stator and rotor parameter design and has the advantages of high working efficiency, high working pressure, low starting pressure, stable operation, capability of obtaining the same output torque in two directions, reliable shaft dynamic sealing and the like.

The end face flow distribution cycloid hydraulic motor is characterized in that a pin wheel meshing pair is generally composed of a rotor and a plurality of pin teeth, a semicircular through hole is formed in the stator for installing the pin teeth during machining, the pin teeth easily slide from an installation hole when the through hole structure causes installation, the installation is inconvenient, meanwhile, when the motor works, the ring surfaces of the rotor and the pin teeth, the contact surfaces of two end surfaces of the pin teeth and adjacent connecting mechanisms, corresponding friction exists between the outer ring surface of an output shaft and the inner wall of a cavity inside a body shell and between the end surface of the output shaft and the contact surfaces of the adjacent connecting mechanisms, the friction not only abrades the inner mechanism and influences the service life of the whole motor, but also causes fine debris generated by friction in oil return and pollutes pressure oil.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the prior art, a novel cycloid hydraulic motor is provided, a pinwheel meshing pair of the end face flow distribution cycloid hydraulic motor is generally composed of a rotor and a plurality of pinteeth, a semicircular through hole is generally formed in a stator for installing the pinteeth during machining, the pinteeth easily slide down from an installation hole when the through hole structure causes installation, and the installation is inconvenient.

The utility model provides a technical scheme that its technical problem adopted is: a novel cycloid hydraulic motor comprises a rear cover, a supporting plate, a stator, a connecting plate, a body shell and a front cover which are sequentially connected through bolts, wherein a meshing cavity for placing a rotor is formed in the middle of the stator and comprises a plurality of tooth grooves for placing pin teeth, a containing cavity with an internal output shaft is formed in the middle of the body shell, the left side surface of the supporting plate is coaxially provided with a locking groove corresponding to the tooth groove, a first boosting component is arranged in the locking groove, a limiting column is arranged at the left opening of the tooth socket, a positioning groove communicated with the tooth socket is arranged inside the limiting column, a second power-assisted assembly is arranged in the positioning groove, a groove is arranged on the left side surface of the connecting plate corresponding to the right end surface of the output shaft, the groove is internally provided with a third power assisting assembly, a fourth power assisting assembly is arranged between the outer ring surface of the output shaft and the inner wall of the containing cavity, and a fifth power assisting assembly is arranged between the right side surface of the front cover and the contact surface of the output shaft.

First helping hand subassembly include first plane thrust bearing and first plane retaining ring, the right side of first plane retaining ring and the interior bottom fixed connection of lock position groove, first plane thrust bearing be located the left side of first plane retaining ring, the right-hand member of needle tooth extends to lock position groove and is connected with first plane thrust bearing's left side face contact.

The right side face of the connecting plate is provided with a limiting groove matched with the limiting column, and the left end face of the needle gear is provided with a positioning column matched with the positioning groove.

The second power assisting assembly comprises a second plane thrust bearing and a second plane bearing retainer ring, the left side face of the second plane bearing retainer ring is fixedly connected with the inner bottom face of the positioning groove, the second plane thrust bearing is located on the right side of the second plane bearing retainer ring, and the left end face of the positioning column is in contact connection with the right side face of the second plane thrust bearing.

The third power assisting assembly comprises a third plane thrust bearing and a third plane bearing retainer ring, the right side face of the third plane bearing retainer ring is fixedly connected with the inner bottom face of the groove of the connecting plate, the third plane thrust bearing is located on the left side of the third plane bearing retainer ring, and the right end face of the output shaft is in contact connection with the left side face of the third plane thrust bearing.

The fourth power assisting assembly comprises a first outer ring needle bearing and a second outer ring needle bearing, the output shaft comprises a connecting portion in the body shell and an output portion extending out of the front cover, the first outer ring needle bearing is sleeved at the right end of the connecting portion, the second outer ring needle bearing is sleeved at the left end of the connecting portion, and the outer surfaces of the first outer ring needle bearing and the second outer ring needle bearing are fixedly connected with the inner wall of the accommodating cavity.

And a bearing spacer bush is arranged between the first outer ring needle bearing and the second outer ring needle bearing and is sleeved in the middle of the connecting part.

The fifth power-assisted assembly comprises a fourth plane thrust bearing and a bearing limiting ring sleeved with the fourth plane thrust bearing, wherein a fourth plane bearing retainer ring and a fifth plane bearing retainer ring are respectively arranged on two sides of the fourth plane thrust bearing, the right side face of the fourth plane bearing retainer ring is in contact connection with the left end face of the connecting portion, and the left side of the fifth plane bearing retainer ring is in contact connection with the right side face of the front cover.

The utility model has the advantages that:

(1) the utility model discloses a novel cycloid hydraulic motor comprises back cover, backup pad, stator, connecting plate, body shell and protecgulum, the left opening part of tooth's socket is provided with spacing post, the right flank of connecting plate is seted up with spacing post assorted spacing groove, spacing post's inside is seted up with the constant head tank of tooth's socket intercommunication, be provided with on the left end face of pin tooth with constant head tank assorted reference column, through spacing post and spacing groove joint, location when being convenient for the stator equipment, reference column and constant head tank joint simultaneously avoid the pin tooth to slide from the tooth's socket, the equipment of the pin tooth of being convenient for;

(2) the lock position inslot is provided with first helping hand subassembly, is provided with second helping hand subassembly in the constant head tank, is provided with third helping hand subassembly in the recess of connecting plate, is provided with fourth helping hand subassembly between output shaft outer anchor ring and the inner wall that holds the chamber, is provided with fifth helping hand subassembly between the right flank of protecgulum and the contact surface of output shaft, through five helping hand subassemblies, can reduce the friction between internal mechanism, promotes the life of motor, reduces the oil circuit and pollutes.

Drawings

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

Fig. 1 is a sectional view of the internal structure of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 3 is a partially enlarged schematic view of the present invention at B in fig. 1.

Fig. 4 is a plan view of the present invention.

Fig. 5 is an exploded view of the assembly of the middle pin gear, the stator and the rotor of the present invention.

In the figure, 1, a support plate, 2, a stator, 3, a connecting plate, 4, a body shell, 5, a front cover, 6, needle teeth, 7, a tooth groove, 8, an output shaft, 9, a locking groove, 10, a first boosting assembly, 11, a limiting column, 12, a positioning groove, 13, a second boosting assembly, 14, a third boosting assembly, 15, a fourth boosting assembly, 16, a fifth boosting assembly, 17, a first plane thrust bearing, 18, a first plane bearing retainer, 19, a limiting groove, 20, a positioning column, 21, a second plane thrust bearing, 22, a second plane bearing retainer, 23, a third plane thrust bearing, 24, a third plane bearing retainer, 25, a first outer ring bearing, 26, a second outer ring needle bearing, 27, a connecting part, 28, an output part, 29, a bearing spacer, 30, a fourth plane thrust bearing, 31, a bearing retainer, 32, and a fourth plane bearing retainer, 33. and a fifth plane bearing retainer ring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 show a new type cycloid hydraulic motor, which comprises a rear cover, a supporting plate 1, a stator 2, a connecting plate 3, a body shell 4 and a front cover 5 which are sequentially connected by a bolt, wherein a meshing cavity for placing a rotor is arranged in the middle of the stator 2, the meshing cavity comprises a plurality of tooth sockets 7 for placing needle teeth 6, a containing cavity for placing an output shaft 8 is arranged in the middle of the body shell 4, a locking groove 9 is coaxially arranged on the left side surface of the supporting plate 1 corresponding to the tooth sockets 7, a first boosting component 10 is arranged in the locking groove 9, a limiting column 11 is arranged at the left opening of the tooth sockets 7, a positioning groove 12 communicated with the tooth sockets 7 is arranged in the limiting column 11, a second boosting component 13 is arranged in the positioning groove 12, a groove is arranged on the left side surface of the connecting plate 3 corresponding to the right end surface of the output shaft 8, a third boosting component 14 is arranged in the groove, a fourth boosting component 15 is arranged between the outer annular surface of the output shaft 8 and the inner wall of the containing cavity, a fifth booster assembly 16 is arranged between the contact surface of the right side surface of the front cover 5 and the output shaft 8.

As shown in fig. 5, when assembling the motor, firstly, all the needle teeth 6 are put into the tooth space 7 from the right side of the stator 2, and are clamped with the positioning groove 12 through the positioning column 20, and the connection between the needle teeth 6 and the tooth space 7 plays a limiting role, so that the needle teeth 6 cannot slide down from the left opening surface of the tooth space 7, and the pre-assembly of the needle teeth 6 and the stator 2 can be performed in advance in the assembling process.

As shown in fig. 2, the assembled stator 2 is clamped into the limit groove 19 along the direction of the limit post 11, and finally the rotor is clamped into the meshing cavity of the stator 2, and in order to improve the sealing performance between the stator 2 and the connecting plate 3, a sealing layer may be arranged on the inner groove surface of the limit groove 19, or a sealing O-ring is embedded in the inner bottom surface of the limit groove 19.

Further, in order to reduce the frictional resistance between the right end face of the needle tooth 6 and the support plate 1 when the needle tooth 6 rotates, the first power assisting assembly 10 comprises a first plane thrust bearing 17 and a first plane bearing retainer 18, the right side of the first plane bearing retainer 18 is fixedly connected with the inner bottom face of the locking groove 9, the first plane thrust bearing 17 is positioned on the left side of the first plane bearing retainer 18, and the right end of the needle tooth 6 extends to the position where the locking groove 9 is connected with the left side face of the first plane thrust bearing 17 in a contact mode.

As shown in fig. 2, when the rotor is rotating, the friction resistance will be smaller by the rolling contact between the right end surface of the pin teeth 6 and the first flat thrust bearing 17 than the surface contact friction of the conventional motor.

Furthermore, in order to effectively limit the needle gear 6 and facilitate the assembly of the motor, a limiting groove 19 matched with the limiting column 11 is formed in the right side surface of the connecting plate 3, and a positioning column 20 matched with the positioning groove 12 is arranged on the left end surface of the needle gear 6.

Further, in order to reduce the friction resistance between the left end surface of the needle gear 6 and the connecting plate 3 when the needle gear 6 rotates, the second booster assembly 13 includes a second flat thrust bearing 21 and a second flat retainer 22, the left side surface of the second flat retainer 22 is fixedly connected with the inner bottom surface of the positioning slot 12, the second flat thrust bearing 21 is located on the right side of the second flat retainer 22, and the left end surface of the positioning column 20 is in contact connection with the right side surface of the second flat thrust bearing 21, as shown in fig. 2, when the rotor rotates, the friction resistance between the needle gear 6 and the left end of the needle gear 6 when the rotor rotates can be effectively reduced through the rolling contact between the positioning column 20 at the left end of the needle gear 6 and the second flat thrust bearing 21.

Further, in order to reduce the frictional resistance between the right end surface of the output shaft 6 and the connecting plate 3 when the output shaft rotates, as shown in fig. 1, the third power assisting assembly 14 includes a third flat thrust bearing 23 and a third flat retainer 24, the right side surface of the third flat retainer 24 is fixedly connected to the inner bottom surface of the groove of the connecting plate 3, the third flat thrust bearing 23 is located on the left side of the third flat retainer 24, and the right end surface of the output shaft 8 is in contact connection with the left side surface of the third flat thrust bearing 23.

Further, in order to reduce the frictional resistance between the outer ring surface of the output shaft 6 and the inner wall of the accommodating cavity of the housing 4 during rotation, as shown in fig. 1, the fourth power assisting assembly 15 includes a first outer ring needle bearing 25 and a second outer ring needle bearing 26, the output shaft 8 includes a connecting portion 27 inside the housing 4 and an output portion 28 extending out of the front cover 5, the first outer ring needle bearing 25 is sleeved on the right end of the connecting portion 27, the second outer ring needle bearing 26 is sleeved on the left end of the connecting portion 27, and the outer surfaces of the first outer ring needle bearing 25 and the second outer ring needle bearing 26 are fixedly connected with the inner wall of the accommodating cavity.

Further, in order to facilitate assembly and use of the first outer ring needle bearing 25 and the second outer ring needle bearing 26, a bearing spacer 29 is arranged between the first outer ring needle bearing 25 and the second outer ring needle bearing 26, the bearing spacer 29 is sleeved in the middle of the connecting portion 27, the first outer ring needle bearing 25 and the second outer ring needle bearing 26 are the same, batch purchase is facilitated, and production cost is saved.

Further, in order to reduce the friction resistance between the left end surface of the output shaft 6 and the right side surface of the front cover 5 when the output shaft rotates, as shown in fig. 3, the fifth power assisting assembly 16 includes a fourth planar thrust bearing 30 and a bearing retainer ring 31 sleeved on the fourth planar thrust bearing 30, a fourth planar retainer ring 32 and a fifth planar retainer ring 33 are respectively disposed on two sides of the fourth planar thrust bearing 30, the right side surface of the fourth planar retainer ring 32 is in contact connection with the left end surface of the connecting portion 27, and the left side of the fifth planar retainer ring 33 is in contact connection with the right side surface of the front cover 5.

The utility model discloses a novel cycloid hydraulic motor comprises rear cover, backup pad 1, stator 2, connecting plate 3, body shell 4 and protecgulum 5, the left opening part of tooth's socket 7 is provided with spacing post 11, the right flank of connecting plate 3 is seted up with spacing 19 of spacing post 11 assorted, spacing post 11 is inside to be seted up with constant head tank 12 of tooth's socket 7 intercommunication, be provided with on the left end face of pin tooth 6 with constant head tank 12 assorted reference column 20, through spacing post 11 and spacing 19 joint, be convenient for the stator 2 location when assembling, reference column 20 and constant head tank 12 joint simultaneously, avoid pin tooth 6 from the landing in tooth's socket 7, be convenient for the equipment of pin tooth 6; be provided with first helping hand subassembly 10 in the groove 9 of locking a position, be provided with second helping hand subassembly 13 in the constant head tank 12, be provided with third helping hand subassembly 14 in the recess of connecting plate 3, be provided with fourth helping hand subassembly 15 between output shaft 8 outer anchor ring and the inner wall that holds the chamber, be provided with fifth helping hand subassembly 16 between the right flank of protecgulum 5 and the contact surface of output shaft 8, through five helping hand subassemblies, can reduce the friction between internal mechanism, promote the life of motor, reduce the oil circuit and pollute.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a novel cycloid hydraulic motor, includes bolted connection's back lid, backup pad (1), stator (2), connecting plate (3), body shell (4) and protecgulum (5) in proper order, and the meshing chamber of placing the rotor is seted up at the middle part of stator (2), and the meshing chamber includes a plurality of tooth's socket (7) of placing pin tooth (6), and the chamber that holds of built-in output shaft (8), characterized by are seted up at the middle part of body shell (4): the left side surface of the supporting plate (1) is coaxially provided with a locking groove (9) corresponding to the tooth groove (7), a first power assisting component (10) is arranged in the locking groove (9), a limiting column (11) is arranged at a left opening of the tooth groove (7), a positioning groove (12) communicated with the tooth groove (7) is formed in the limiting column (11), a second power assisting component (13) is arranged in the positioning groove (12), a groove is formed in the left side surface of the connecting plate (3) corresponding to the right end surface of the output shaft (8), a third power assisting component (14) is arranged in the groove, a fourth power assisting component (15) is arranged between the outer ring surface of the output shaft (8) and the inner wall of the accommodating cavity, and a fifth power assisting component (16) is arranged between the right side surface of the front cover (5) and the contact surface of the output shaft (8).

2. The new gerotor hydraulic motor of claim 1, wherein: first helping hand subassembly (10) include first plane thrust bearing (17) and first plane retaining ring (18), the right side of first plane retaining ring (18) and the interior bottom fixed connection of catching groove (9), first plane thrust bearing (17) be located the left side of first plane retaining ring (18), the right-hand member of pin tooth (6) extends to catching groove (9) and is connected with the left surface contact of first plane thrust bearing (17).

3. The new gerotor hydraulic motor of claim 1, wherein: the right side face of the connecting plate (3) is provided with a limiting groove (19) matched with the limiting column (11), and the left end face of the needle gear (6) is provided with a positioning column (20) matched with the positioning groove (12).

4. The new gerotor hydraulic motor of claim 3, wherein: the second power assisting assembly (13) comprises a second plane thrust bearing (21) and a second plane bearing retainer ring (22), the left side face of the second plane bearing retainer ring (22) is fixedly connected with the inner bottom face of the positioning groove (12), the second plane thrust bearing (21) is located on the right side of the second plane bearing retainer ring (22), and the left end face of the positioning column (20) is in contact connection with the right side face of the second plane thrust bearing (21).

5. The new gerotor hydraulic motor of claim 1, wherein: the third power assisting assembly (14) comprises a third plane thrust bearing (23) and a third plane bearing retainer ring (24), the right side face of the third plane bearing retainer ring (24) is fixedly connected with the inner bottom face of the groove of the connecting plate (3), the third plane thrust bearing (23) is located on the left side of the third plane bearing retainer ring (24), and the right end face of the output shaft (8) is in contact connection with the left side face of the third plane thrust bearing (23).

6. The new gerotor hydraulic motor of claim 1, wherein: the fourth power assisting assembly (15) comprises a first outer ring needle bearing (25) and a second outer ring needle bearing (26), the output shaft (8) comprises a connecting part (27) in the body shell (4) and an output part (28) extending out of the front cover (5), the first outer ring needle bearing (25) is sleeved at the right end of the connecting part (27), the second outer ring needle bearing (26) is sleeved at the left end of the connecting part (27), and the outer surfaces of the first outer ring needle bearing (25) and the second outer ring needle bearing (26) are fixedly connected with the inner wall of the accommodating cavity.

7. The new gerotor hydraulic motor of claim 6, further comprising: a bearing spacer bush (29) is arranged between the first outer ring needle bearing (25) and the second outer ring needle bearing (26), and the bearing spacer bush (29) is sleeved in the middle of the connecting part (27).

8. The new gerotor hydraulic motor of claim 6, further comprising: fifth helping hand subassembly (16) include fourth plane thrust bearing (30) and cup joint bearing retainer ring (31) of fourth plane thrust bearing (30), fourth plane thrust bearing (30) both sides be provided with fourth plane bearing retainer ring (32) and fifth plane bearing retainer ring (33) respectively, the right flank of fourth plane bearing retainer ring (32) is connected with the left end face contact of connecting portion (27), the left side of fifth plane bearing retainer ring (33) is connected with the right flank contact of protecgulum (5).