CN211344351U

CN211344351U - Hydraulic rotary joint

Info

Publication number: CN211344351U
Application number: CN201922321993.3U
Authority: CN
Inventors: 邱魏俊恺
Original assignee: Dongguan Clamptek Electro Mechanical Science & Technology Developing Co ltd
Current assignee: Dongguan Clamptek Electro Mechanical Science & Technology Developing Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-25
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a hydraulic pressure rotary joint, it includes: the oil pump comprises a fixed seat, a first oil inlet hole and a second oil inlet hole, wherein the fixed seat is provided with a mounting hole, the inner wall of the mounting hole is provided with a first annular groove and a second annular groove which are distributed at intervals, the periphery of the fixed seat is inwards provided with the first oil inlet hole which penetrates through the first annular groove, and the periphery of the fixed seat is inwards provided with the second oil inlet hole which penetrates through the second annular groove; the rotating body penetrates through the mounting hole of the fixing seat and can rotate in the mounting hole, the rotating body is backwards provided with a first oil outlet hole and a second oil outlet hole which are L-shaped along the front end face of the rotating body, and an inlet of the first oil outlet hole penetrates through the outer circumferential face of the rotating body and is in butt joint with the first oil inlet hole; the inlet of the second oil outlet hole penetrates through the outer circumferential surface of the rotating body and is in butt joint with the second oil inlet hole; the rotator outside is equipped with at least three sealing washer, and wherein first, second sealing washer are located the both sides of the import of first oil outlet, and second, third sealing washer are located the both sides of the import of second oil outlet, and first, second, third sealing washer all with, mounting hole inner wall in close contact with.

Description

Hydraulic rotary joint

The technical field is as follows:

the utility model relates to a hydraulic pressure technical field refers in particular to a hydraulic rotary joint.

Background art:

a complete hydraulic system consists of five parts, namely a power source device, an execution device, a control and regulation device, an auxiliary device and a liquid medium. The hydraulic pressure has the characteristics of large transmission power, easy transmission and configuration and the like, and is widely applied in industrial and civil industries. The actuators (hydraulic cylinder and hydraulic motor) of the hydraulic system function to convert the pressure energy of the fluid into mechanical energy to achieve the desired linear reciprocating or rotary motion. The energy source device (hydraulic pump) of the hydraulic system functions to convert the mechanical energy of the prime mover into pressure energy of the fluid.

The hydraulic system needs oil supply, namely oil pipes need to be used for supplying oil, but for loads needing to rotate, how to prevent the oil pipes from winding or screwing is a technical problem which needs to be solved urgently, otherwise, the problem that the oil pipes cannot work normally due to winding or screwing can occur.

In view of the above, the present inventors propose the following.

The utility model has the following contents:

an object of the utility model is to overcome prior art not enough, provide a hydraulic pressure rotary joint.

In order to solve the technical problem, the utility model discloses a following technical scheme: this hydraulic pressure rotary joint includes: the oil pump comprises a fixed seat, a first oil inlet hole and a second oil inlet hole, wherein the fixed seat is provided with a mounting hole, the inner wall of the mounting hole is provided with a first annular groove and a second annular groove which are distributed at intervals, the periphery of the fixed seat is inwards provided with the first oil inlet hole which penetrates through the first annular groove, and the periphery of the fixed seat is inwards provided with the second oil inlet hole which penetrates through the second annular groove; the rotary body penetrates through the mounting hole of the fixed seat and can rotate in the mounting hole, the rotary body is backwards provided with a first oil outlet and a second oil outlet which are L-shaped and penetrate through the peripheral surface of the outer side of the rotary body along the front end surface of the rotary body, the inlet of the first oil outlet penetrates through the peripheral surface of the outer side of the rotary body and is in butt joint with the first oil inlet, and the inlet of the second oil outlet penetrates through the peripheral surface of the outer side of the rotary body and is in butt joint with the second oil inlet; the rotator outside is provided with at least three sealing washer, and wherein first sealing washer and second sealing washer are located the both sides of the import of this first oil outlet, and this second sealing washer and third sealing washer are located the both sides of the import of this second oil outlet, and this first sealing washer and second sealing washer and third sealing washer all with the mounting hole inner wall in close contact with of fixing base.

Further, in the above technical solution, the width dimension of the first annular groove is greater than the width dimension of the inlet of the first oil outlet hole; the width dimension of the second annular groove is larger than that of the inlet of the second oil outlet hole.

Furthermore, in the above technical solution, the cross-section of the mounting hole is T-shaped, the rotating body is T-shaped with a large front end and a small rear end, and after the rotating body is inserted into the mounting hole, the rotating body extends out of the mounting hole and is provided with a snap spring in a clamped manner, so that the rotating body is limited in the mounting hole.

Further, in the above technical solution, the front and rear openings of the mounting hole are respectively provided with a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove are respectively provided with a first bearing and a second bearing, and the rotating body is installed with the first bearing and the second bearing in a penetrating manner; wherein, this rotator front end is provided with a ladder groove, during this ladder groove was established to first bearing cover, the jump ring supported and pressed in this second bearing rear end face.

Further, in the above technical solution, the first oil outlet hole and the second oil outlet hole are located on the same plane.

Further, in the above technical solution, the first oil inlet hole and the second oil inlet hole are located on the same plane.

Furthermore, in the above technical scheme, the rotating body is provided with a first groove body, a second groove body and a third groove body which are distributed at equal intervals, and the first sealing ring, the second sealing ring and the third sealing ring are respectively installed in the first groove body, the second groove body and the third groove body.

After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: in the mounting hole of the fixing seat, the inner wall of the mounting hole is provided with a first annular groove and a second annular groove which are distributed at intervals, the first annular groove and the second annular groove are communicated with the first oil outlet hole and the second oil outlet hole which are arranged on the rotating body penetrating through the mounting hole in a one-to-one correspondence way, so that when the rotating body rotates in the mounting hole of the fixed seat, the first oil outlet hole and the second oil outlet hole can be respectively communicated with the first annular groove and the second annular groove at any time, namely, the rotary body can continuously lead in oil bodies from the first oil inlet hole and the second oil inlet hole and supply the oil bodies to the load arranged at the front end of the rotary body from the first oil outlet hole and the second oil outlet hole under the condition of circular motion, the oil transportation quality is ensured, and can prevent the problem of oil pipe winding or spiral, guarantee operating mass and work efficiency, the order the utility model discloses extremely strong market competition has.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

As shown in fig. 1, a hydraulic rotary joint includes: the oil pipe oil pump comprises a fixed seat 1, wherein the fixed seat 1 is provided with a mounting hole 11, the inner wall of the mounting hole 11 is provided with a first annular groove 12 and a second annular groove 13 which are distributed at intervals, a first oil inlet hole 14 penetrating through the first annular groove 12 is inwards arranged at the periphery of the fixed seat 1, a second oil inlet hole 15 penetrating through the second annular groove 13 is inwards arranged at the periphery of the fixed seat 1, and both a first oil outlet hole 21 and a second oil outlet hole 22 are connected with oil pipes; the rotating body 2 penetrates through the mounting hole 11 of the fixed seat 1 and can rotate in the mounting hole 11, the rotating body 2 is backwards provided with a first oil outlet 21 and a second oil outlet 22 which are L-shaped and penetrate through the peripheral surface of the outer side of the rotating body 2 along the front end surface of the rotating body, the inlet of the first oil outlet 21 penetrates through the peripheral surface of the outer side of the rotating body 2 and is in butt joint with the first oil inlet 14, and the inlet of the second oil outlet 22 penetrates through the peripheral surface of the outer side of the rotating body 2 and is in butt joint with the second oil inlet 15; at least three sealing rings are arranged on the outer side of the rotating body 2, wherein a first sealing ring 31 and a second sealing ring 32 are positioned on two sides of the inlet of the first oil outlet 21, the second sealing ring 32 and a third sealing ring 33 are positioned on two sides of the inlet of the second oil outlet 22, and the first sealing ring 31, the second sealing ring 32 and the third sealing ring 33 are all in close contact with the inner wall of the mounting hole 11 of the fixing seat 1. In the mounting hole 11 of the fixing base 1, the inner wall of the mounting hole 11 is provided with the first annular groove 12 and the second annular groove 13 which are distributed at intervals, the first annular groove 12 and the second annular groove 13 are communicated with the first oil outlet hole 21 and the second oil outlet hole 22 which are arranged on the rotator 2 which is arranged in the mounting hole 11 in a penetrating way in a one-to-one correspondence way, so that when the rotator 2 rotates in the mounting hole 11 of the fixing base 1, the first oil outlet hole 21 and the second oil outlet hole 22 can be communicated with the first annular groove 12 and the second annular groove 13 respectively, namely, the rotator can continuously lead in oil from the first oil inlet hole 14 and the second oil inlet hole 15 and supply oil from the first oil outlet hole 21 and the second oil outlet hole 22 to be arranged in the load at the front end of the rotator 2 under the condition of circular motion, the oil transportation quality is ensured, the problem of oil pipe winding or spiral can be prevented, and the work quality and the work efficiency are ensured, the utility model has strong market competitiveness. Furthermore, the outer side of the rotating body 2 is provided with at least three sealing rings for ensuring that the first annular groove 12 and the second annular groove 13 are communicated with the first oil outlet hole 21 and the second oil outlet hole 22 in a one-to-one correspondence manner, and sealing is performed to prevent oil leakage.

The width dimension of the first annular groove 12 is larger than the width dimension of the inlet of the first oil outlet hole 21; the width dimension of the second annular groove 13 is larger than the width dimension of the inlet of the second oil outlet hole 22, so that the smoothness of oil transportation is ensured.

The cross-section of mounting hole 11 is the T font, and this rotator 2 is the T font that the big rear end of front end is little, and after this rotator 2 wore to locate in this mounting hole 11, this rotator 2 stretched out outside this mounting hole 11 to the card is equipped with a jump ring 23, makes rotator 2 inject in this mounting hole 11, guarantees assembly structure's stability.

A first mounting groove 111 and a second mounting groove 112 are respectively arranged at the front opening and the rear opening of the mounting hole 11, a first bearing 113 and a second bearing 114 are respectively arranged in the first mounting groove 111 and the second mounting groove 112, and the rotating body 2 is installed with the first bearing 113 and the second bearing 114 in a penetrating manner, so that the rotating body can rotate more smoothly; wherein, this rotator 2 front end is provided with a ladder groove 24, during this ladder groove 24 was established to first bearing 113 cover, jump ring 23 supported and pressed in this second bearing 114 rear end face, guaranteed the stability of structure.

The first oil outlet hole 21 and the second oil outlet hole 22 are located on the same plane. The first oil inlet hole 14 and the second oil inlet hole 15 are located on the same plane.

The outer side of the rotating body 2 is provided with a first groove body, a second groove body and a third groove body which are distributed at equal intervals, and a first sealing ring 31, a second sealing ring 32 and a third sealing ring 33 are respectively arranged in the first groove body, the second groove body and the third groove body.

To sum up, the present invention provides the mounting hole 11 of the fixing base 1, the inner wall of the mounting hole 11 is provided with the first annular groove 12 and the second annular groove 13 which are distributed at intervals, the first annular groove 12 and the second annular groove 13 are communicated with the first oil outlet 21 and the second oil outlet 22 which are arranged on the rotator 2 which is arranged in the mounting hole 11 in a one-to-one correspondence manner, so that when the rotator 2 rotates in the mounting hole 11 of the fixing base 1, the first oil outlet 21 and the second oil outlet 22 can be communicated with the first annular groove 12 and the second annular groove 13 at any time, that is, the rotator can continuously introduce oil from the first oil inlet 14 and the second oil inlet 15 and supply oil from the first oil outlet 21 and the second oil outlet 22 to the load which is arranged at the front end of the rotator 2 under the circumstance of circular motion, thereby ensuring the oil transportation quality and preventing the problem of oil pipe winding or spiral, guarantee operating mass and work efficiency, make the utility model discloses extremely strong market competition has.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Claims

1. A hydraulic rotary joint which is characterized in that: it includes:

the oil pump comprises a fixed seat (1), wherein the fixed seat (1) is provided with a mounting hole (11), the inner wall of the mounting hole (11) is provided with a first annular groove (12) and a second annular groove (13) which are distributed at intervals, the periphery of the fixed seat (1) is inwards provided with a first oil inlet hole (14) which penetrates through the first annular groove (12), and the periphery of the fixed seat (1) is inwards provided with a second oil inlet hole (15) which penetrates through the second annular groove (13);

the rotary body (2) penetrates through the mounting hole (11) of the fixed seat (1) and can rotate in the mounting hole (11), the rotary body (2) is backwards provided with a first oil outlet hole (21) and a second oil outlet hole (22) which are L-shaped and penetrate through the peripheral surface of the outer side of the rotary body along the front end surface of the rotary body, the inlet of the first oil outlet hole (21) penetrates through the peripheral surface of the outer side of the rotary body (2) and is in butt joint with the first oil inlet hole (14), and the inlet of the second oil outlet hole (22) penetrates through the peripheral surface of the outer side of the rotary body (2) and is in butt joint with the second oil inlet hole (15);

the utility model discloses a fixing base, including rotator (2), rotator (2) outside is provided with at least three sealing washer, and wherein first sealing washer (31) and second sealing washer (32) are located the both sides of the import of this first oil outlet (21), and this second sealing washer (32) and third sealing washer (33) are located the both sides of the import of this second oil outlet (22), and this first sealing washer (31) and second sealing washer (32) and third sealing washer (33) all with mounting hole (11) inner wall in close contact with of fixing base (1).

2. A hydraulic swivel joint according to claim 1, wherein: the width dimension of the first annular groove (12) is larger than the width dimension of the inlet of the first oil outlet hole (21); the width dimension of the second annular groove (13) is larger than the width dimension of the inlet of the second oil outlet hole (22).

3. A hydraulic swivel joint according to claim 2, wherein: the cross-section of mounting hole (11) is the T font, and this rotator (2) is the T font that the big rear end of front end is little, and back in this mounting hole (11) is worn to locate in this rotator (2), and this rotator (2) stretches out outside this mounting hole (11) to a jump ring (23) is equipped with in the card, makes rotator (2) inject in this mounting hole (11).

4. A hydraulic swivel joint according to claim 3, wherein: a first mounting groove (111) and a second mounting groove (112) are respectively arranged at the front opening and the rear opening of the mounting hole (11), a first bearing (113) and a second bearing (114) are respectively arranged in the first mounting groove (111) and the second mounting groove (112), and the rotating body (2) is installed with the first bearing (113) and the second bearing (114) in a penetrating manner; wherein, this rotator (2) front end is provided with one step groove (24), in this step groove (24) was established in first bearing (113) cover, jump ring (23) supported and pressed in this second bearing (114) rear end face.

5. A hydraulic swivel joint according to any one of claims 1-4, wherein: the first oil outlet hole (21) and the second oil outlet hole (22) are located on the same plane.

6. A hydraulic swivel joint according to any one of claims 1-4, wherein: the first oil inlet hole (14) and the second oil inlet hole (15) are located on the same plane.

7. A hydraulic swivel joint according to any one of claims 1-4, wherein: the outer side of the rotating body (2) is provided with a first groove body, a second groove body and a third groove body which are distributed at equal intervals, and a first sealing ring (31), a second sealing ring (32) and a third sealing ring (33) are respectively arranged in the first groove body, the second groove body and the third groove body.