CN114657808A

CN114657808A - Hydrostatic bearing, breast roll shake equipment and paper machine easy to assemble

Info

Publication number: CN114657808A
Application number: CN202210291012.9A
Authority: CN
Inventors: 蒋屹东; 潘有余; 应艳; 王国君; 傅哲凡
Original assignee: HANGZHOU MECH PAPER TECHNOLOGY
Current assignee: HANGZHOU MECH PAPER TECHNOLOGY
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-06-24

Abstract

The invention discloses a hydrostatic bearing convenient to install, which comprises: the oil inlet cavity and the oil return cavity are distributed at intervals around the circumference of the shaft sleeve; the inner shell is arranged on the shaft sleeve and is tightly matched with the shaft sleeve; the outer shell is arranged on the inner shell, the outer shell is matched with the spherical surface of the inner shell, an oil inlet hole and an oil outlet hole are formed in the outer shell, and the oil inlet hole is communicated with the oil inlet cavity; the oil outlet is communicated with the oil return cavity. So that the inner shell and the outer shell form spherical fit. So set up, can let between interior casing, the shell body installation simple, convenient. The inner shell and the outer shell can be installed and matched without more positioning adjustment.

Description

Hydrostatic bearing, breast roll shake equipment and paper machine easy to assemble

Technical Field

The invention relates to the technical field of papermaking equipment, in particular to static pressure bearing, breast roll shaking equipment and a papermaking machine which are convenient to install.

Background

The forming apparatus, also called wire section, is the most important part of the paper machine, forming the paper sheet on the stock suspension, and the quality of the paper and the normal production section of the paper machine are closely related to the operation of the forming apparatus. Once the wet paper web is formed in the forming apparatus, the fiber interlacing state in the paper is substantially set, and subsequent pressing, drying, and calendering can only provide limited improvement in the properties of the formed web.

A conventional web forming apparatus is a fourdrinier former, which comprises a forming wire, and a wire table comprising frame supports for dewatering elements, such as breast rolls, forming plates, grooved table rolls, dewatering plates, wet suction boxes, vacuum suction boxes, etc., connected to the forming wire. The breast roll is the first roll of the fourdrinier wire former and functions to support the forming wire and dewater it. The breast roll is a hollow cylindrical structure formed by rolling a thin plate, and a shaft head of the breast roll is provided with a rolling bearing which is matched with a bearing seat.

In chinese patent application No.: CN201310701244.8 discloses a novel breast roll, which comprises a frame, a bearing seat and a cylinder body, wherein two ends of the cylinder body are provided with cast iron choke plugs, a shaft head is arranged in each cast iron choke plug, the shaft head is installed on the bearing seat through a rolling bearing, and the surface of the cylinder body is provided with an anti-corrosion coating layer; one end of the shaft head is connected with the rack through a spring, the other end of the shaft head is connected with a driving rod, and the tail end of the driving rod is provided with a roller which is in contact with a flange of a cam structure.

In chinese patent application No.: CN201810883258.9 discloses a horizontal device of arranging of fibre for in-process is made to paper, belong to papermaking technology production technical field, including the shaping net, be provided with the breast roller that promotes the horizontal arrangement of fibre in shaping net thick liquids injection position department, be provided with first slide bearing on the right side of breast roller, the left side is provided with the second slide bearing, first slide bearing inlays in first bearing box, the second slide bearing inlays in the second bearing box, the left and right sides at the breast roller support is fixed respectively to first bearing box and second bearing box, a biserial antifriction bearing is installed to the right side end department of breast roller, the outer lane cover at biserial antifriction bearing has the connector, the right-hand member transverse connection of connector has the connecting rod, the right-hand member of connecting rod is connected with the reciprocating mechanism who is used for carrying out reciprocating motion.

In the prior art, the breast roll is supported by the rolling bearing, and the breast roll has large size and high rotating speed and needs to do reciprocating motion continuously in the axial direction, so that the rolling bearing is easy to damage and has short service life.

In chinese patent application No.: CN202111197727.X discloses a hydrostatic bearing, including main shaft, axle sleeve, bearing shell body and two end covers, the axle sleeve inner wall equipartition has a plurality of oil pocket, and the main shaft wears to locate the middle part of axle sleeve, and the bearing shell body cover is located the outside of axle sleeve, forms the working chamber between bearing shell body and the axle sleeve, and the inside of working chamber is provided with the driving-disc, and one side slidable of driving-disc is provided with a plurality of drive block, and the one end that every drive block passed the preformed hole on the axle sleeve all is provided with an adjusting plate. According to the technical scheme, the oil film is formed on the inner side wall of the shaft sleeve, and then the main shaft arranged in the shaft sleeve is supported. This technical scheme only sets up an shell body, lets shell body and bushing connection, is the cooperation of annular face between shell body and the axle sleeve, when the installation, just need carry out axial positioning, radial positioning, and the installation is complicated.

In the prior art, the breast roll is supported by a rolling bearing, and through search, the applicant does not find that the breast roll is supported by a static pressure bearing. Even if the above-described hydrostatic bearing is applied to the supporting breast roll, the mounting requirements for the breast roll are high when the hydrostatic bearing is engaged with the head, and the axis of the breast roll is required to be horizontal and cannot form an angle with the horizontal plane. Otherwise the breast roll is influenced to move back and forth along the axis. In view of this, the present application is proposed.

Disclosure of Invention

In order to solve the technical problem in at least one aspect in the background art, the invention provides a static pressure bearing which is convenient to install, breast roll shaking equipment and a paper machine.

The invention provides a static pressure bearing convenient to mount, which comprises:

the oil inlet structure comprises a shaft sleeve, a plurality of oil inlet cavities and an oil return cavity, wherein the inner side wall of the shaft sleeve is provided with the oil inlet cavities and the oil return cavity;

the inner shell is arranged on the shaft sleeve and is tightly matched with the shaft sleeve;

the outer shell is arranged on the inner shell, the outer shell is matched with the spherical surface of the inner shell, an oil inlet hole and an oil outlet hole are formed in the outer shell, and the oil inlet hole is communicated with the oil inlet cavity; the oil outlet is communicated with the oil return cavity.

Preferably, a first groove is formed in the outer side wall of the shaft sleeve and communicated with the oil inlet hole; the shaft sleeve is provided with a first through hole, and the first through hole is communicated with the first groove and the oil inlet cavity.

Preferably, the first groove includes:

the first groove is annular and is arranged along the circumferential direction of the shaft sleeve;

the second grooves are arranged at intervals along the circumferential direction of the shaft sleeve, the length direction of the second grooves is parallel to the axis of the shaft sleeve, and the second grooves are communicated with the first grooves and the first through holes.

Preferably, a first inlet is arranged on the inner shell and is communicated with the first groove;

a second inlet is formed in the outer shell and communicated with the oil inlet;

the hydrostatic bearing further comprises an oil pipe, wherein the first end of the oil pipe is communicated with the first inlet, and the second end of the oil pipe is communicated with the second inlet.

Preferably, a first outlet is formed in the shaft sleeve and communicated with the oil return cavity;

a second outlet is formed in the inner shell and communicated with the first groove, and the second outlet is communicated with the first outlet;

a second accommodating groove distributed along the circumferential direction of the outer shell is formed in the inner side wall of the outer shell, and the second accommodating groove and the first accommodating groove are matched to form an oil storage chamber; and a third outlet is formed in the outer shell and communicated with the oil storage chamber.

Preferably, the oil pipe is located in the oil storage chamber.

Preferably, a positioning column is further arranged on the outer side wall of the inner shell; and the outer shell is provided with a positioning block matched with the positioning column.

Preferably, the positioning column and the positioning block are located in the oil storage chamber.

A breast roll shaking apparatus comprising:

a support;

the two hydrostatic bearings are arranged on the bracket at intervals;

the shaft heads at two ends of the breast roll are respectively connected with the two hydrostatic bearings;

the shaking device is in transmission connection with the breast roll;

the rotating part is used for driving the breast roll to rotate;

and the oil supply mechanism is communicated with the oil inlet hole and the oil outlet hole.

A papermaking machine comprises the breast roll shaking device.

The beneficial effects brought by one aspect of the invention are as follows:

the inner shell and the outer shell form a spherical fit. So set up, can let between interior casing, the shell body installation simple, convenient. The inner shell and the outer shell can be installed and matched without more positioning adjustment. Simultaneously, when the assembly with the spindle nose of breast roll, even two spindle noses at the both ends of breast roll radially have certain error, if the axis direction of breast roll has certain angle with the horizontal plane promptly, also can effectively support the spindle nose through letting interior casing, shell body form the sphere cooperation, do not influence the breast roll along axis reciprocating motion.

Drawings

FIG. 1 is a front view of a breast roll in accordance with the disclosed embodiment 1 in combination with a hydrostatic bearing;

FIG. 2 is an axial view of a breast roll in accordance with the disclosed embodiment 1 in combination with a hydrostatic bearing;

FIG. 3 is a cross-sectional view of a breast roll in accordance with the disclosed embodiment 1 in combination with a hydrostatic bearing;

FIG. 4 is a partial cross-sectional view of a breast roll in accordance with the disclosed embodiment 1 in combination with a hydrostatic bearing;

fig. 5 is an axial view of a hydrostatic bearing of embodiment 1 of the present disclosure;

fig. 6 is a sectional view of a hydrostatic bearing of embodiment 1 of the present disclosure;

FIG. 7 is a cross-sectional view of a sleeve of the disclosed embodiment 1;

FIG. 8 is a partial schematic view of a bushing of the disclosed embodiment 1;

FIG. 9 is a front view of a bushing of the disclosed embodiment 1;

FIG. 10 is an axial view of the bushing of the disclosed embodiment 1 of the present invention;

FIG. 11 is a partial schematic view of a bushing in accordance with the present disclosure;

FIG. 12 is an axial view of the bushing disclosed herein;

FIG. 13 is a partial cross-sectional view of the present disclosure;

FIG. 14 is a partial cross-sectional view of the present disclosure;

FIG. 15 is an axial view of the inner housing of the present disclosure;

FIG. 16 is an axial view of the inner housing of the present disclosure;

FIG. 17 is a partial axial view of the inner housing of the present disclosure;

FIG. 18 is an axial view of the outer housing of the present disclosure;

FIG. 19 is an axial view of the outer housing of the present disclosure;

FIG. 20 is a cross-sectional view of a second hydrostatic bearing according to the present disclosure;

FIG. 21 is an axial view of embodiment 2 of the present disclosure;

FIG. 22 is a schematic view of a related product being produced (a schematic view of a breast roll, hydrostatic bearing, etc.);

FIG. 23 is a schematic illustration of the relevant product being produced (schematic illustration of breast roll, hydrostatic bearing, housing, etc.);

fig. 24 is a schematic view of a related product being produced (schematic view of a sleeve);

FIG. 25 is a schematic view of a related product being produced (schematic view of the inner housing);

FIG. 26 is a schematic of the relevant product being produced (tubing, outer casing schematic);

FIG. 27 is a schematic view of a related product being produced (a schematic view of an outer shell);

fig. 28 is a schematic view of the relevant product being produced (schematic view of inner and outer housings).

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present application may be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Embodiment 1, referring to fig. 1 to 20, the present invention provides a hydrostatic bearing A, B easy to mount, comprising:

the oil return device comprises a shaft sleeve 1, wherein the inner side wall of the shaft sleeve 1 is provided with a plurality of oil inlet cavities 101 and oil return cavities 102, and the plurality of oil inlet cavities 101 are distributed at intervals around the circumference of the shaft sleeve 1; a fitting 2 is arranged in at least one oil inlet cavity 101, an arc surface 201 is arranged on one side, close to the axis of the shaft sleeve 1, of the fitting 2, and the distance between the arc surface 201 and the axis of the shaft sleeve 1 is R1; the inner diameter of the shaft sleeve 1 is R2, R2-R1 are more than or equal to 0 and less than or equal to 0.02mm, and the values of R2-R1 can be 0, 0.005, 0.01, 0.015 and 0.02 mm; the arc surface 201 can be in the same plane with the inner side wall of the shaft sleeve 1, and the arc surface 201 can also protrude out of the inner side wall of the shaft sleeve 1.

The oil inlet cavity 101 is arranged on the shaft sleeve 1, and is communicated with the oil inlet cavity 401; the oil outlet hole 402 is communicated with the oil return cavity 102.

After the shaft sleeve 1 is arranged on the shaft head Z of the breast roller X, hydraulic oil is introduced through the oil inlet 401 and enters the oil inlet cavity 101, an oil film is formed between the shaft head Z and the shaft sleeve 1, so that when the shaking is started, the breast roller X and the hydrostatic bearing are separated by the pressure oil film, the pressure on the surface layer of the friction pair is relatively uniform, the sliding resistance only comes from fluid viscosity, the friction factor is small, the service life is long, and the reliability is high.

Furthermore, the oil film has the function of homogenizing errors, and the influence caused by errors in manufacturing can be reduced, so the requirement on the processing precision is lower than that of a rolling bearing. The hydrostatic bearing A, B can also establish a bearing oil film in the state that the breast roll X is completely static, so that the surface layer of the friction pair is not directly contacted in the starting stage, and the damage to the hydrostatic bearing and the shaft head Z in the starting stage is avoided.

A matching piece 2 is arranged, and the distance between the arc surface 201 and the shaft head Z is 0.03-0.05mm, and can be 0.03, 0.035, 0.04, 0.045 and 0.05 mm; the arc surface 201 is small in distance from the shaft head Z, and is in tight fit with the shaft head Z, so that a static pressure state can be effectively formed, and the shaft head Z is effectively supported.

Through a plurality of experiments, when the distance between the arc-shaped surface 201 and the shaft head Z is 0.03-0.05mm, enough static pressure supporting force can be ensured, and formed multipoint supporting force can be balanced. If the distance is too large, the static pressure load is insufficient, and the shaft head cannot be effectively supported. The spacing is too small, and the formed multipoint supporting force is not uniform. The thickness of the oil film is too small, so that external impact cannot be effectively resisted, the shaft head and a matching piece are in rigid contact, friction is formed, the oil film is damaged, and static pressure cannot be formed. And the heat generated in the operation can not be effectively taken away, and the service life is influenced.

Can let the axis of arc surface 201 coaxial with the axis of axle sleeve 1, so, let form even oil film between arc surface 201 and the spindle nose Z, better support spindle nose Z.

The hydraulic oil in the oil inlet cavity 101 enters the oil return cavity 102 through the gap between the shaft head Z and the shaft sleeve 1 and the arc-shaped surface 201, and is discharged through the oil outlet 402 to form a passage. The breast roll X reciprocates along the axis direction, generates a large amount of heat and can be taken away by using hydraulic oil.

As a further improvement of the above embodiment, in an embodiment, the oil return cavity 102 is annularly arranged along the circumferential direction of the bushing 1. Thus, a uniform oil film can be formed, and uniform supporting force is provided. And a plurality of oil inlet cavities 101 are arranged on two sides of the oil return cavity 102.

Can all set up 4 oil feed chambers 101 in the both sides of oil return chamber 102, the oil feed chamber 101 of each side all along axle sleeve 1's circumference interval evenly distributed, so set up, can form even oil film, can provide even holding power to spindle nose Z.

As a further improvement of the above embodiment, in one embodiment, the fitting 2 is disposed in each of the oil inlet chambers 101. The better closely cooperates with spindle nose Z, and the oil film that forms can effectively, evenly support spindle nose Z.

As a further improvement of the above embodiment, in an embodiment, a first groove 103 is provided on an outer side wall of the shaft sleeve 1, and the first groove 103 is communicated with the oil inlet 401; the oil inlet structure is characterized in that a first through hole 105 is formed in the shaft sleeve 1, and the first through hole 105 is communicated with the first groove 103 and the oil inlet cavity 101.

A first outlet 107 is arranged on the shaft sleeve 1, and the first outlet 107 is communicated with the oil return cavity 102.

In the present embodiment, the housing includes an inner housing 3 and an outer housing 4. The outer shell 4 comprises two semi-rings, which is convenient for production and assembly.

The inner shell 3 is installed on the shaft sleeve 1 and is tightly matched with the shaft sleeve 1.

A first inlet 301 and a second outlet 302 are provided on the inner housing 3, and the first inlet 301 is communicated with the first groove 103. The second outlet 302 communicates with the first outlet 107.

The outer side wall of the inner shell 3 is provided with first holding grooves 303 distributed along the circumferential direction of the inner shell, and the first holding grooves 303 are communicated with the second outlet 302.

A positioning post 304 is further disposed on the outer side wall of the inner housing 3, the positioning post 304 is located in the first receiving groove 303, and correspondingly, a positioning block 401 matched with the positioning post 304 is disposed on the inner side wall of the outer housing 4. During assembly, the positioning column 304 is connected with the positioning block 401, so that the inner shell 3 and the outer shell 4 can be conveniently positioned.

The outer shell 4 is installed on the inner shell 3, and the oil inlet 401 and the oil outlet 402 are located on the outer shell 4. The outer side wall of the inner shell 3 and the inner side wall of the outer shell 4 can be provided with spherical surfaces, and spherical surface matching is formed between the inner shell 3 and the outer shell 4. So set up, can let between interior casing 3, the shell body 4 installation simple, convenient. The inner shell 3 and the outer shell 4 can be installed and matched without more positioning adjustment. Meanwhile, when the shaft head Z of the breast roll X is assembled, even if two shaft heads Z at two ends of the breast roll X have certain errors in the radial direction, namely the axis direction of the breast roll X has a certain angle with the horizontal plane, the shaft head Z can be effectively supported by enabling the inner shell 3 and the outer shell 4 to form spherical surface matching, and the reciprocating movement of the breast roll X along the axis is not influenced.

Compared with the matching of a cylinder and the like, the spherical matching can be freely adjusted in 360 degrees, and can be more suitable for various complex installation environments on site.

In the prior art, for example, application No.: cn202111197727.x, it only has an outer shell, and the outer shell is connected with the shaft sleeve, and the outer shell and the shaft sleeve are matched by annular surface. If the prior art is installed on the breast roll, axial positioning and radial positioning are needed, and the installation is complicated. Meanwhile, when the breast roll is matched with the shaft head Z, the mounting requirement on the breast roll X is high, the axis of the breast roll X is required to be horizontal, and an angle cannot be formed between the axis of the breast roll X and the horizontal plane. Otherwise the breast roll X is influenced to move back and forth along the axis. Moreover, the matching space between the shaft sleeve and the shaft head is very small, and the requirement is 0.03-0.05 mm. If the annular surfaces are matched, installation stress is easily generated in the operation process, and the stability of operation is damaged.

Second receiving grooves 407 are formed in the inner side wall of the outer housing 4 along the circumferential direction thereof, and the second receiving grooves 407 cooperate with the first receiving grooves 303 to form the oil reservoir chamber C.

The hydrostatic bearing further comprises an oil pipe 5, the oil pipe 5 is located in the oil storage chamber C, and a first end of the oil pipe 5 is communicated with the first inlet 301. Let reference column 304, locating piece 401, oil pipe 5 arrange in oil storage chamber C, convenient location, convenient wiring, casing 3, shell body 4's outside including need not setting up makes things convenient for the packing, convenient transportation.

The outer shell 4 is provided with a second inlet 403 and a third outlet 404, and the second inlet 403 is communicated with the oil inlet 401 and is communicated with the second end of the oil pipe 5. The third outlet port 404 communicates with the oil reservoir chamber C and with the oil outlet hole 402.

The external hydraulic oil enters the second inlet 403 through the oil inlet 401, then enters the first inlet 301 through the oil pipe 5, then enters the first groove 103, and then enters the oil inlet cavity 101 through the first groove 103 and the first through hole 105.

Hydraulic oil in the oil inlet cavity 101 enters the oil return cavity 102 through a gap between the shaft head Z and the shaft sleeve 1, then enters the oil storage chamber C through the first outlet 107 and the second outlet 302, and then is discharged through the third outlet 404 and the oil outlet 402.

As a further improvement of the above embodiment, in one embodiment, the first trench 103 includes:

a first groove 1031, which is annular and arranged along the circumferential direction of the sleeve 1; a plurality of second slots 1032 are arranged at intervals along the circumferential direction of the sleeve 1, the length direction of the second slots 1032 is parallel to the axis of the sleeve 1, and the second slots 1032 are communicated with the first slots 1031 and the first through holes 105.

The hydraulic oil enters the second groove 1032 through the first groove 1031, and then enters the oil inlet chamber 101 through the first through hole 105.

Annular first groove 1031 and the second groove 1032 that a plurality of intervals set up make things convenient for hydraulic oil to get into different oil feed chamber 101 fast in, form the oil film fast, can evenly support spindle nose Z. The first and

second grooves

1031, 1032 are also convenient for production.

As a further improvement to the above embodiment, in one embodiment, a second groove 104 is provided on the outer side wall of the shaft sleeve 1; and a second through hole 106 is formed in the shaft sleeve 1, and the second through hole 106 is communicated with the second groove 104 and the oil inlet cavity 101.

In the actual working process, at the beginning, the amount of hydraulic oil in each oil inlet cavity 101 may be different, redundant hydraulic oil may enter the second groove 104 through the second through hole 106 for temporary storage, when the oil film pressure generated by the shaft sleeve 1 and the shaft head Z is different, the gap is uneven, at this time, the oil temporarily stored in the second groove 104 may be adjusted and compensated in real time, so as to achieve the final pressure balance of each oil cavity. And the effective regulation and control of the oil quantity are realized.

If the hydraulic oil in a certain oil inlet cavity 101 is insufficient, the hydraulic oil in the second groove 104 can flow back, and the hydraulic oil in other oil inlet cavities 101 can be supplemented through the gap between the shaft head Z and the shaft sleeve 1. So, guarantee that the oil mass in every oil feed chamber 101 is unified basically, so can provide even static pressure holding power to spindle nose Z, let spindle nose Z move well.

As a further improvement of the above embodiment, in one embodiment, the second groove 104 extends along the circumferential direction of the sleeve 1. The hydraulic oil is convenient to store, the hydraulic oil can be stored as much as possible, and the supporting shaft sleeve 1 with uniform supporting force can be formed by each oil cavity.

In this embodiment, through setting up 8 fitting pieces 2, closely cooperate between with spindle nose Z, form the effective support spindle nose Z of oil film. 8 fitting parts 2 are stress balance points. The first through hole 105 and the second through hole 106 can be located at the fitting 2, and the hydraulic oil enters through the first through hole 105. The first through hole 105 is a force output point and is arranged at the fitting piece 2 to better support the shaft head Z. The second through hole 106 is located at the fitting piece 2, so that oil quantity adjustment can be better performed, an even oil film is formed, and the shaft head Z is better supported.

Through setting up 8

fitting pieces

2, 8 fitting pieces 2 distribute in each oil feed chamber, and closely cooperate between the spindle nose Z, form the effective support spindle nose Z of oil film, and fitting piece 2 is little with spindle nose Z cooperation area, produces too much heat when avoiding moving, influences life.

Referring to fig. 21, there is also disclosed in embodiment 2 a breast roll X shaking apparatus comprising:

a bracket 6; two hydrostatic bearings A, B, which are arranged on the bracket 6 at intervals; the shaft heads Z at the two ends of the breast roll X are respectively connected with the two hydrostatic bearings A, B; the shaking device 7 is in transmission connection with the breast roll X and can drive the breast roll X to reciprocate along the axial direction; the rotating part 8 is used for driving the breast roll X to rotate, and the rotating part 8 can be a motor and a belt mechanism; and the oil supply mechanism is communicated with the oil inlet hole 401 and the oil outlet hole 402. The rotating part 8, the shaking device 7 and the oil supply mechanism can be of the prior art, and the oil supply mechanism is not shown; the oil supply mechanism may be used to supply hydraulic oil into the oil inlet hole 401. The hydraulic oil discharged from the oil outlet hole 402 can also enter the oil supply mechanism.

The breast roll X was supported by the hydrostatic bearing of example 1, and the hydrostatic bearing A, B had a long service life. The resistance to the breast roll X is small, and the service life is long.

A hydrostatic bearing arranged on a shaft head Z at the working side of the breast roll X is defined as a first hydrostatic bearing A and is arranged close to the shaking device; the hydrostatic bearing on the other side of the stub shaft Z is defined as a second hydrostatic bearing B.

A sealing ring 9 may be provided on both sides of the first hydrostatic bearing a. Two sides of the two sealing rings 9 are respectively provided with a water retaining ring 10. The sealing ring 9 and the water retaining ring 10 are arranged on the shaft head.

The sealing ring 9 can be connected with the inner shell 3; the sealing ring 9, the inner shell 3 and the shaft sleeve 1 are enclosed to form a first chamber Q1.

The sealing ring 9 is provided with a fourth outlet 901, and the fourth outlet 901 is communicated with the first chamber Q1.

The sealing ring 9 is provided with two annular first bulges 902 matched with the shaft heads Z, so that the sealing ring can be effectively sealed, the leakage is avoided, and the supporting strength can be effectively improved.

The water retaining ring 10 is connected to the outer shell 4 to prevent water from entering. A baffle 11 is arranged between the water retaining ring 10 and the sealing ring 9. The baffle 11 forms a second chamber Q2 with the sealing ring 9, the inner housing 3 and the outer housing 4. The second chamber Q2 communicates with the fourth outlet 901.

The outer shell 4 is provided with a fifth outlet 405, and the fifth outlet 405 is communicated with the second chamber Q2 and the oil outlet 402.

During operation, the hydraulic oil will move in the axial direction. Hydraulic oil enters the first chamber Q1 through a gap between the shaft head Z and the shaft sleeve 1, then enters the second chamber Q2 through the fourth outlet 901, and is discharged through the fifth outlet 405 and the oil outlet 402.

The hydraulic oil in the oil storage chamber C also leaks through the gap between the inner housing 3 and the outer housing 4, enters the second chamber Q2, and is discharged through the fifth outlet 405 and the oil outlet 402.

The water retaining ring 10 is provided with two annular second bulges 1001 matched with the shaft heads Z, so that the sealing can be effectively realized, and the supporting strength can also be effectively improved.

A notch 1002 may be provided on the water guard ring 10, and the notch 1002 is located between the two second protrusions 1001. If hydraulic oil is discharged through the notch 1002, leakage is proved, and a maintainer can find out the leakage in time and replace parts conveniently and timely. Component servicing may also be performed through the notch 1002.

A sealing ring 9, a baffle 11 and a water retaining ring 10 can be arranged on one side of the second hydrostatic bearing B close to the breast roll X body. And the other side is provided with an outer cover 12 which is arranged on the outer side of the shaft head Z and is connected with the outer shell 4.

A first threaded aperture 1201 may be provided in the housing 12.

A sixth outlet 406 is provided in the outer housing 4, the sixth outlet 406 being in communication with the outer housing 12. The hydraulic oil moves laterally into the housing 12 and may be discharged through the sixth outlet 406.

By providing a connecting member, a sealing plug, the connecting member may be a bolt. And a second threaded hole matched with the bolt and the first threaded hole 1201 is formed in the shaft head Z. In the transportation process, let the bolt be connected with first screw hole 1201, second screw hole, let breast roller X and dustcoat 12 fixed, avoid breast roller X axial displacement, avoid rocking along the axial, avoid wearing and tearing. The bolts, sealing plugs are not shown. The cover 12, the connecting members form a fixing portion for fixing the breast roll X. Of course, those skilled in the art may also provide other detachable fixing portions to fix the breast roll X and the hydrostatic bearing during transportation and remove the same during use.

In preparation for the operation, the bolt is removed and the sealing plug is fitted into the first threaded hole 1201 to form a seal. Thus avoiding leakage.

Also disclosed in embodiment 3 is a papermaking machine comprising the breast roll shaking apparatus. The breast roll shaking equipment of the paper machine has long service life and good effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An easy-to-install hydrostatic bearing, comprising:

the oil inlet cavity and the oil return cavity are distributed at intervals around the circumference of the shaft sleeve;

2. The easy-to-mount hydrostatic bearing of claim 1, wherein the outer sidewall of the sleeve has a first groove, and the first groove is communicated with the oil inlet; the shaft sleeve is provided with a first through hole, and the first through hole is communicated with the first groove and the oil inlet cavity.

3. The easy-to-mount hydrostatic bearing of claim 2, wherein the first groove comprises:

4. An easy to install hydrostatic bearing according to claim 2, wherein the inner housing is provided with a first inlet, the first inlet communicating with the first groove;

5. The easy-to-mount hydrostatic bearing of claim 4, wherein the sleeve has a first outlet, the first outlet communicating with the oil return chamber;

a second accommodating groove distributed along the circumferential direction of the inner side wall of the outer shell is formed in the inner side wall of the outer shell, and the second accommodating groove is matched with the first accommodating groove to form an oil storage chamber; and a third outlet is formed in the outer shell and communicated with the oil storage chamber.

6. The easy-to-mount hydrostatic bearing of claim 5, wherein the oil pipe is located within the oil reservoir.

7. The easy-to-mount hydrostatic bearing of claim 5, wherein the outer side wall of the inner housing is further provided with a positioning column; and the outer shell is provided with a positioning block matched with the positioning column.

8. The easy-to-install hydrostatic bearing of claim 7, wherein the positioning posts and the positioning blocks are located in the oil storage chamber.

9. A breast roll shaking apparatus comprising:

a support;

two hydrostatic bearings according to any of claims 1 to 8, spaced apart on said support;

the shaking device is in transmission connection with the breast roll;

the rotating part is used for driving the breast roll to rotate;

10. A paper making machine comprising the breast roll shaking apparatus of claim 9.