CN217926554U

CN217926554U - Hydraulic oil cylinder with rotary joint

Info

Publication number: CN217926554U
Application number: CN202222119010.XU
Authority: CN
Inventors: 王建忠; 高杨; 谢志勇
Original assignee: Hunan Jinyuanke Heavy Industry Technology Co ltd
Current assignee: Hunan Jinyuanke Heavy Industry Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-11-29
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a hydraulic cylinder with a rotary joint, which comprises a cylinder body, a piston rod and a rotary joint, wherein a third oil way is arranged on the bottom of the cylinder body, a cylinder oil port is arranged in the middle of the cylinder body, the cylinder oil port is communicated with the third oil way through an oil pipe, and the other end of the third oil way is communicated with the first oil way; a piston is arranged in the cylinder body, the piston divides the interior of the cylinder body into a first cavity and a second cavity, the first cavity is communicated with a cylinder oil port, and the first cavity is communicated with a first oil way through the cylinder oil port, an oil pipe and a third oil way; the second cavity is communicated with the oil cylinder connector, and the second cavity is communicated with the second oil way through the oil cylinder connector. The utility model discloses set up the hydraulic fluid port on the shaft shoulder with prior art and change into and set up the oil circuit at the bottom of the hydro-cylinder jar, through oil pipe with bottom of the cylinder oil circuit and jar oil port intercommunication, when wearing and tearing or damage appear after the shaft shoulder long-time use, directly maintain and change can, realized the interchangeability of shaft shoulder and hydro-cylinder to the life of hydro-cylinder has been prolonged.

Description

Hydraulic oil cylinder with rotary joint

Technical Field

The utility model relates to a hydraulic cylinder technical field, specificly relate to a take rotary joint's hydraulic cylinder.

Background

In order to solve the problem that in some oil cylinder application equipment, a hydraulic oil cylinder needs to rotate along with mechanical equipment to cause oil pipes to wind so that the hydraulic oil cylinder cannot work normally, patent CN202561338 provides a rotary joint comprising a shaft shoulder, a rotating shaft and a rotating sleeve and an oil cylinder with the rotary joint, so that the oil cylinder is installed and fixed on the mechanical equipment needing to rotate, the oil pipes for supplying oil during work do not need to rotate along with the rotation, and the oil pipes cannot wind.

In practical application of the oil cylinder, because an oil pipe arranged between a shaft shoulder and an oil port of the oil cylinder is a hard iron pipe and cannot be twisted, the installation angle of the oil pipe on the shaft shoulder has certain relevance with the processing position of the oil port of the oil cylinder on the oil cylinder; during specific machining, the machined shaft shoulder is generally butted with the oil cylinder, the installation angle of an oil pipe on the butted shaft shoulder is determined, and therefore the machining position of an oil port of the oil cylinder is determined, and the oil pipe installed between the shaft shoulder and the oil port of the oil cylinder is not twisted during later use. However, after the oil cylinder is used for a period of time, the shaft shoulder is easy to wear or damage, and needs to be maintained or replaced, because the position of the oil port on the oil cylinder is fixed and unchanged, when the newly replaced or maintained shaft shoulder is installed in a butt joint with the oil cylinder again, the installation angle of the oil pipe on the shaft shoulder can be changed slightly, when the shaft shoulder is connected with the oil port of the original position of the oil cylinder again, the phenomenon that the oil pipe is distorted can occur, only the original oil cylinder can be scrapped, the position of the oil port on the new oil cylinder is processed according to the installation angle of the oil pipe on the new shaft shoulder, the oil port of the shaft shoulder and the oil cylinder can not be exchanged with each other due to the installation position, the problem that the oil cylinder needs to be processed and matched is single is solved, the cost of the oil cylinder is high, and the waste is large.

SUMMERY OF THE UTILITY MODEL

In order to solve the processing of current hydro-cylinder and shaft shoulder one-to-one, change the shaft shoulder and then need process new jar oil mouth, and lead to former hydro-cylinder condemned problem, the utility model aims at providing a take rotary joint's hydraulic cylinder.

In order to achieve the above object, the utility model provides a following technical scheme:

a hydraulic oil cylinder with a rotary joint comprises a cylinder body, a piston rod and the rotary joint, wherein the rotary joint comprises an oil cylinder connector, a shaft shoulder, a rotary sleeve and a rotary shaft; the hydraulic cylinder is characterized in that a third oil way is arranged on the bottom of the cylinder body, a cylinder oil port is arranged in the middle of the cylinder body, the cylinder oil port is communicated with the third oil way through an oil pipe, and the other end of the third oil way is communicated with the first oil way; a piston is arranged in the cylinder body, one end of the piston is connected with a piston rod, and the other end of the piston rod penetrates through the outer side of a cylinder cover of the cylinder body; the piston divides the interior of the cylinder body into a first cavity and a second cavity, the first cavity is communicated with a cylinder oil port, and the first cavity is communicated with a first oil way through a cylinder oil port, an oil pipe and a third oil way; the second cavity is communicated with the oil cylinder connector, and the second cavity is communicated with the second oil way through the oil cylinder connector.

Furthermore, annular first oil passing ring groove is formed in the inner wall of the rotary sleeve, the first oil passing ring groove is located between the first oil port and the first oil way, and the first oil port is communicated with the first oil way through the first oil passing ring groove.

Further, annular oil through ring groove two has been seted up to the inner wall of swivel sleeve, oil through ring groove two is located between second hydraulic fluid port and the second oil circuit, and communicates through oil through ring groove two between second hydraulic fluid port and the second oil circuit.

Further, an annular oil through ring groove III is formed between the cylinder bottom and the oil cylinder connector, and the oil through ring groove III is located between the third oil way and the first oil way.

Further, the cylinder oil port and the oil pipe are connected in a welding mode, the oil pipe and the third oil way are connected in a welding mode, and the oil leakage and oil seepage phenomena at the connector position after long-time use can be avoided by adopting the welding connection mode compared with the existing connector connection mode.

Compared with the prior art, the utility model has the advantages of:

1. the oil port is arranged on the shaft shoulder in the prior art, the oil way is arranged at the bottom of the oil cylinder instead, the oil way at the bottom of the oil cylinder is communicated with the oil port of the oil cylinder through the oil pipe, and the problem that the oil way at the bottom of the oil cylinder is communicated with the cavity of the oil cylinder is solved under the condition that the oil way at the bottom of the oil cylinder is communicated with the oil way at the rotating shaft.

2. The utility model discloses do not relate to the problem of shaft shoulder hydraulic fluid port and jar oil port intercommunication, consequently do not have the restriction to the processing position of the two, realized the interchangeability of shaft shoulder and hydro-cylinder, when wearing and tearing appear after the shaft shoulder long-time use or damage, directly maintain and change can, former hydro-cylinder can continue to use to prolong the life of hydro-cylinder, correspondingly the cost is reduced.

3. The rotating shaft is fixedly connected with the oil cylinder, the rotating shaft rotates along with the oil cylinder during working, and the rotating sleeve is sleeved outside the rotating shaft and is fixed, so that the problem that the oil cylinder works because of the winding of an oil pipe is avoided; the shaft shoulder is used for connecting and limiting the position of the rotary sleeve.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

in the figure: 1. the oil cylinder comprises a cylinder body, 2, an oil cylinder connector, 3, a shaft shoulder, 4, a first oil way, 5, a second oil way, 6, a rotary sleeve, 7, a rotary shaft, 8, a second oil port, 9, a first oil port, 10, a cylinder bottom, 11, a third oil way, 12, an oil pipe, 13, a cylinder oil port, 14, a piston, 15, a first cavity, 16, a second cavity, 17, an oil through ring groove III, 18, an oil through ring groove I, 19, an oil through ring groove II, 20 and a piston rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1-4, the hydraulic cylinder with the rotary joint of the present embodiment includes a cylinder body 1, a piston 14, a piston rod 20, a rotary joint and the cylinder body 1, where the rotary joint includes a cylinder connector 2, a shoulder 3, a rotary sleeve 6, and a rotary shaft 7.

The rotating shaft 7 is fixedly connected with the cylinder body 1 through the oil cylinder connector 2, and a first oil way 4 and a second oil way 5 which are not communicated with each other are arranged in the rotating shaft 7; the rotating sleeve 6 is sleeved outside the rotating shaft 7, a first oil port 9 and a second oil port 8 are formed in the rotating sleeve 6, the first oil port 9 is communicated with the first oil way 4 in the rotating shaft 7, and the second oil port 8 is communicated with the second oil way 5 in the rotating shaft 7.

An annular oil through ring groove I18 is formed in the inner wall of the rotary sleeve 6, the oil through ring groove I18 is located between the first oil port 9 and the first oil path 4, and the first oil port 9 is communicated with the first oil path 4 through the oil through ring groove I18; when the cylinder body 1 rotates, the rotating shaft 7 fixedly connected to the cylinder body 1 rotates along with the cylinder body, and the first oil path 4 arranged in the rotating shaft 7 also rotates along with the rotating shaft 7; in order to avoid appearing the winding phenomenon of oil pipe, swivel housing 6 then cup joints the external fixation motionless at rotation axis 7, and open first hydraulic fluid port 9 and outside oil pipe connection on swivel housing 6, can not take place rotatoryly yet, the first hydraulic fluid port 9 takes place to deflect with the butt joint position of first oil circuit 4 this moment, in order to ensure that the hydraulic oil that flows in from first hydraulic fluid port 9 can get into first oil circuit 4 smoothly, annular oil through ring groove 18 has been seted up at rotation axis 7 inner wall, no matter first oil circuit 4 is rotatory all keep the intercommunication with annular oil through ring groove 18 to arbitrary position, thereby make the hydraulic oil that first hydraulic fluid port 9 flowed in get into first oil circuit 4 smoothly.

An annular oil through ring groove II 19 is formed in the inner wall of the rotary sleeve 6, the oil through ring groove II 19 is located between the second oil port 8 and the second oil way 5, and the second oil port 8 is communicated with the second oil way 5 through the oil through ring groove II 19; similarly, when the cylinder body 1 rotates, the rotating shaft 7 fixedly connected to the cylinder body 1 rotates along with the cylinder body, and the second oil path 5 arranged in the rotating shaft 7 also rotates along with the rotating shaft 7; in order to avoid the winding phenomenon of oil pipe, the rotary sleeve 6 is then cup jointed at the external fixation of rotation axis 7 motionless, and open the second hydraulic fluid port 8 and the outside oil piping connection on the rotary sleeve 6, can not take place rotatoryly yet, the butt joint position of second hydraulic fluid port 8 and second oil circuit 5 takes place to deflect this moment, in order to ensure that the hydraulic oil that flows in from second hydraulic fluid port 8 can get into second oil circuit 5 smoothly, annular logical oil ring groove two 19 has been seted up at rotation axis 7 inner wall, no matter second oil circuit 5 is rotatory to arbitrary position all to keep the intercommunication with annular logical oil ring groove two 19, thereby make the hydraulic oil that second hydraulic fluid port 8 flowed in get into second oil circuit 5 smoothly.

A shoulder 3 is mounted between the cylinder 1 and the rotating sleeve 6, the shoulder 3 and a mounting nut at the end of the rotating sleeve 6 together define the position of the rotating sleeve 6 on the rotating shaft 7.

A third oil way 11 is arranged on the bottom 10 of the cylinder body 1, a cylinder oil port 13 is arranged in the middle of the cylinder body 1, the cylinder oil port 13 is communicated with the third oil way 11 through an oil pipe 12, and the other end of the third oil way 11 is communicated with the first oil way 4; specifically, the cylinder oil port 13 is connected with the oil pipe 12 in a welding mode, the oil pipe 12 is connected with the third oil way 11 in a welding mode, and the welding connection mode is adopted, so that the phenomena of oil leakage and oil seepage at the joint after long-time use can be avoided compared with the existing connection mode of the connector.

A piston 14 is arranged in the cylinder body 1, one end of the piston 14 is connected with a piston rod 20, and the other end of the piston rod 20 penetrates through the outer side of a cylinder cover of the cylinder body 1; the piston 14 divides the interior of the cylinder body 1 into a first cavity 15 and a second cavity 16, the first cavity 15 is communicated with the cylinder oil port 13, and the first cavity 15 is communicated with the first oil path 4 through the cylinder oil port 13, the oil pipe 12 and the third oil path 11; the second cavity 16 is communicated with the oil cylinder connector 2, and the second cavity 16 is communicated with the second oil path 5 through the oil cylinder connector 2.

An annular oil through ring groove III 17 is formed between the cylinder bottom 10 and the oil cylinder connector 2, and the oil through ring groove III 17 is located between the third oil path 11 and the first oil path 4, so that the smoothness of the oil path between the third oil path 11 and the first oil path 4 is ensured.

When specifically using, rotation axis 7 rigid coupling in cylinder body 1 rotates along with the hydro-cylinder, and rotatory cover 6 cup joints the external fixation motionless at rotation axis 7, and the first hydraulic fluid port 9 and the second hydraulic fluid port 8 of seting up on rotatory cover 6 pass through oil pipe connection external control oil circuit, because rotatory cover 6 is motionless, consequently connect in the oil pipe of first hydraulic fluid port 9 and second hydraulic fluid port 8 also need not rotate along with the hydro-cylinder to avoid appearing the winding phenomenon of oil pipe.

When the hydraulic oil enters from the first oil port 9 and reaches the first cavity 15 of the cylinder body 1 through the first oil passage 18, the first oil passage 4, the third oil passage 11, the oil pipe 12 and the cylinder oil port 13, the hydraulic oil in the second cavity 16 flows out from the second oil port 8 after passing through the oil cylinder connector 2, the second oil passage 5 and the second oil passage 19, so that the piston 14 moves rightwards in the inner cavity of the cylinder body 1. Similarly, when hydraulic oil enters from the second oil port 8 and reaches the second cavity 16 of the cylinder body 1 through the second oil channel 19, the second oil channel 5 and the oil cylinder connector 2, the hydraulic oil in the first cavity 15 flows out from the first oil port 9 after passing through the cylinder oil port 13, the oil pipe 12, the third oil channel 11, the first oil channel 4 and the first oil channel 18, so that the piston 14 moves leftwards in the inner cavity of the cylinder body 1. This is repeated so that the piston 14 and the piston rod 20 in the cylinder 1 perform a linear reciprocating motion, thereby converting hydraulic energy into mechanical energy.

Both ends of the oil pipe 12 are arranged on the cylinder body 1 and are not related to the position of the shaft shoulder 3, so that the processing, the maintenance and the replacement of the shaft shoulder 3 do not influence the oil pipe 12 and the cylinder body 1, the structural relation of the whole oil cylinder is simpler, and the processing operation is more convenient.

The utility model discloses only improve hydraulic fluid port and the oil circuit to current hydro-cylinder rotary joint shaft shoulder position, cancel the setting of oil port position on the shaft shoulder 3 promptly, change into and set up oil circuit 11 at hydro-cylinder bottom of the jar 10 to through oil pipe 12 with bottom of the jar oil circuit 11 and jar oil port 13 intercommunication, under the condition of bottom of the jar oil circuit 11 with rotation axis oil circuit 4 intercommunication, solved the problem of rotation

axis oil circuit

4 and 15 intercommunications of hydro-cylinder cavity. It should be noted that, since the operation principle of the rotary joint and the oil cylinder belongs to the prior art, which is not the intended protection scope of the present invention, it will not be described in detail herein.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A hydraulic oil cylinder with a rotary joint comprises a cylinder body (1), a piston (14), a piston rod (20) and the rotary joint, wherein the rotary joint comprises an oil cylinder connector (2), a shaft shoulder (3), a rotary sleeve (6) and a rotary shaft (7), the rotary sleeve (6) is sleeved outside the rotary shaft (7), the rotary shaft (7) is fixedly connected with the cylinder body (1) through the oil cylinder connector (2), the shaft shoulder (3) is installed between the cylinder body (1) and the rotary sleeve (6), a first oil way (4) and a second oil way (5) which are not communicated with each other are arranged in the rotary shaft (7), a first oil port (9) and a second oil port (8) are formed in the rotary sleeve (6), the first oil port (9) is communicated with the first oil way (4), and the second oil port (8) is communicated with the second oil way (5); the oil-saving type oil cylinder is characterized in that a third oil way (11) is formed in the cylinder bottom (10) of the cylinder body (1), a cylinder oil port (13) is formed in the middle of the cylinder body (1), the cylinder oil port (13) is communicated with the third oil way (11) through an oil pipe (12), and the other end of the third oil way (11) is communicated with the first oil way (4); a piston (14) is arranged in the cylinder body (1), one end of the piston (14) is connected with a piston rod (20), and the other end of the piston rod (20) penetrates through the outer side of the cylinder cover of the cylinder body (1); the piston (14) divides the interior of the cylinder body (1) into a first cavity (15) and a second cavity (16), the first cavity (15) is communicated with the cylinder oil port (13), and the first cavity (15) is communicated with the first oil way (4) through the cylinder oil port (13), the oil pipe (12) and the third oil way (11); the second cavity (16) is communicated with the oil cylinder connector (2), and the second cavity (16) is communicated with the second oil way (5) through the oil cylinder connector (2).

2. The hydraulic oil cylinder with the rotary joint as set forth in claim 1, characterized in that the inner wall of the rotary sleeve (6) is provided with a first annular oil through groove (18), the first annular oil through groove (18) is located between the first oil port (9) and the first oil path (4), and the first oil port (9) and the first oil path (4) are communicated through the first annular oil through groove (18).

3. The hydraulic oil cylinder with the rotary joint as claimed in claim 1, wherein an annular oil through ring groove II (19) is formed in the inner wall of the rotary sleeve (6), the oil through ring groove II (19) is located between the second oil port (8) and the second oil path (5), and the second oil port (8) is communicated with the second oil path (5) through the oil through ring groove II (19).

4. The hydraulic cylinder with the rotary joint as recited in claim 1, characterized in that an annular oil through ring groove III (17) is formed between the cylinder bottom (10) and the cylinder connector (2), and the oil through ring groove III (17) is located between the third oil path (11) and the first oil path (4).

5. The hydraulic cylinder with the rotary joint as recited in claim 1, characterized in that the cylinder oil port (13) is connected with an oil pipe (12) by welding, and the oil pipe (12) is connected with the third oil passage (11) by welding.