CN214146322U

CN214146322U - Hydraulic serpentine spring coupling with built-in oil hole and hydraulic hub

Info

Publication number: CN214146322U
Application number: CN202023093785.1U
Authority: CN
Inventors: 高冠华
Original assignee: Beijing Baska Technology Co ltd
Current assignee: Beijing Baska Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-09-07
Anticipated expiration: 2030-12-21

Abstract

The application discloses built-in oilhole hydraulic pressure snake spring shaft coupling. Built-in oilhole hydraulic pressure snake spring shaft coupling includes: the first hydraulic wheel hub is provided with a first oil storage cavity, an oil inlet hole and an oil outlet hole, and the oil inlet hole and the oil outlet hole are respectively communicated with the first oil storage cavity; and the shell is arranged on the first hydraulic hub, and the oil inlet and the oil outlet are positioned in the shell at the position on the first hydraulic hub. According to the hydraulic serpentine spring coupling with the built-in oil hole, the oil inlet hole and/or the oil outlet hole are/is arranged inside the shell, so that dust is prevented through the shell, and a dust cap does not need to be arranged on a check valve arranged on the oil inlet hole and the oil outlet hole; secondly, prior art sets up dustproof cap externally, still need consider dustproof cap and shell axial whether interfere, and the minimum wheel hub length that needs is great, and some industrial and mining can not satisfy, and the technical scheme of this application then need not consider the interference problem, and wheel hub's minimum length can further shorten.

Description

Hydraulic serpentine spring coupling with built-in oil hole and hydraulic hub

Technical Field

The application relates to the technical field of couplings, in particular to a hydraulic serpentine spring coupling with built-in oil holes and a hydraulic hub.

Background

The hydraulic serpentine spring coupling (hydraulic serpentine spring coupling for short) contains at least one hydraulic wheel hub, hydraulic wheel hub contains overcoat and endotheca, the overcoat cover is established on the endotheca to form the oil storage chamber between overcoat and endotheca, be provided with inlet port and oil outlet on the overcoat, inlet port and oil outlet respectively with the oil storage chamber intercommunication, install the check valve on inlet port and the oil outlet respectively, for the protection check valve is not damaged, prevent that the dust from falling into around the check valve, all can play dustproof and protection check valve's effect at the check valve externally mounted cap among the prior art.

Because the excircle size is fixed when the serpentine spring shaft coupling of every model installation check valve, when a model need process the large aperture, will lead to wheel hub's wall thickness too thin, the check valve can stick out the wheel hub excircle, can't install the dust cap.

As the center line of the aperture of the hub needs to be aligned with the center line of the shaft extension of the mounting equipment in the hub mounting process, the hub needs to be in a horizontal state as much as possible so as to realize quick mounting. The level can not be guaranteed when the wheel hub is installed at present, and the installation is troublesome and laboursome.

Accordingly, it would be desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned difficulties of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a built-in oilhole hydraulic pressure snake spring shaft coupling overcomes or alleviates at least one above-mentioned defect of prior art at least.

The utility model discloses an aspect, built-in oilhole hydraulic pressure snake spring shaft coupling includes:

the first hydraulic wheel hub is provided with a first oil storage cavity, an oil inlet hole and an oil outlet hole, and the oil inlet hole and the oil outlet hole are respectively communicated with the first oil storage cavity;

the shell is installed on the first hydraulic hub, and the oil inlet hole and the oil outlet hole are located in the shell.

Optionally, the first hydraulic hub includes a first outer sleeve and a first inner sleeve, the first outer sleeve is sleeved outside the first inner sleeve, and the first oil storage cavity is located between the first outer sleeve and the first inner sleeve;

the first outer sleeve is provided with a first limiting structure, and the first limiting structure is used for limiting the movement of the shell in at least one direction in the axial direction on the first hydraulic hub.

Optionally, the oil inlet hole and/or the oil outlet hole are/is arranged on the first limiting structure.

Optionally, the number of the first limiting structures is multiple, and the first limiting structures are uniformly distributed in the circumferential direction of the first outer sleeve; or the like, or, alternatively,

the first limiting structure is an annular structure and is arranged around the circumference of the first outer sleeve.

Optionally, the hydraulic serpentine spring coupling with the built-in oil hole further comprises a first flange, and the first flange is used for being connected with other hubs;

the first limiting structure is connected with the first flange.

Optionally, built-in oilhole hydraulic pressure snake spring shaft coupling further includes second hydraulic pressure wheel hub, second hydraulic pressure wheel hub includes second overcoat and second endotheca, the cover is established in the second endotheca inside the second overcoat, the second endotheca with second oil storage chamber has between the second overcoat, be provided with at least one excircle arch and second flange on the outer wall of second overcoat, the second flange is used for being connected with first hydraulic pressure wheel hub, be provided with the oilhole in the excircle arch, the oilhole with second oil storage chamber intercommunication.

Optionally, a gap is arranged on the peripheral side wall of the oil inlet hole and/or the peripheral side wall of the oil outlet hole which are arranged on the first limiting structure.

Optionally, the first limiting structure is an annular protruding structure, the first limiting structure is arranged in a direction from the outer wall of the first outer sleeve to the first outer sleeve, and one axial side of the first limiting structure is connected with the axial side face of the first flange.

Optionally, a first groove is formed in a connecting position of the outer wall of the first outer sleeve and the first limiting structure.

The application also provides a hydraulic hub, which is the first hydraulic hub; and a hoisting blind hole with a central line penetrating through the gravity center of the wheel hub is formed in the first outer sleeve of the first hydraulic wheel hub.

Advantageous effects

According to the hydraulic serpentine spring coupling with the built-in oil hole, the oil inlet hole and/or the oil outlet hole are/is arranged inside the shell, so that dust is prevented through the shell, and a dust cap does not need to be arranged on a check valve arranged on the oil inlet hole and the oil outlet hole; secondly, in the prior art, a dustproof cap is arranged outside, whether the dustproof cap is axially interfered with a shell or not needs to be considered, the required minimum hub length is large and cannot be met by some industrial and mining industries, the interference problem does not need to be considered in the technical scheme of the application, and the minimum length of the hub can be further shortened; the problem of how to guarantee the horizontality when this application still can further solve the wheel hub installation.

Drawings

Fig. 1 is a schematic structural diagram of a hydraulic serpentine spring coupling with an oil hole according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a hydraulic serpentine spring coupling with an oil hole according to a second embodiment of the present invention.

Fig. 3 is a partial structural schematic diagram of a first limiting structure in the hydraulic serpentine spring coupling with the oil hole inside shown in fig. 1.

Fig. 4 is a partial structural schematic diagram of a first limiting structure in the hydraulic serpentine spring coupling with the oil hole in fig. 2.

Reference numerals:

1. a first hydraulic hub; 11. a first outer cover; 12. a first limit structure; 13. a first flange; 14. an oil inlet hole; 15. an oil outlet hole; 16. a first inner sleeve;

2. a second hydraulic hub; 21. a second casing; 22. the excircle is convex; 23. a second flange; 24. a second inner sleeve;

3. a housing; 4. a first oil storage chamber; 5. a second oil storage chamber.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. 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 application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.

Fig. 1 is a schematic structural diagram of a hydraulic serpentine spring coupling with an oil hole according to a first embodiment of the present invention. Fig. 2 is a schematic structural diagram of a hydraulic serpentine spring coupling with an oil hole according to a second embodiment of the present invention. Fig. 3 is a partial structural schematic diagram of a first limiting structure in the hydraulic serpentine spring coupling with the oil hole inside shown in fig. 1. Fig. 4 is a partial structural schematic diagram of a first limiting structure in the hydraulic serpentine spring coupling with the oil hole in fig. 2.

The hydraulic serpentine spring coupling with the built-in oil hole as shown in fig. 1 to 4 comprises a first hydraulic hub 1 and a housing 3, wherein the first hydraulic hub 1 is provided with a first oil storage chamber 4, an oil inlet 14 and an oil outlet 15, and the oil inlet 14 and the oil outlet 15 are respectively communicated with the first oil storage chamber 4;

the casing 3 is mounted on the first hydraulic hub 1, and the positions of the oil inlet hole 14 and the oil outlet hole 15 on the first hydraulic hub 1 are located inside the casing 3.

The first hydraulic hub 1 of the present application is used for connection with other hubs or transmission elements.

According to the hydraulic serpentine spring coupling with the built-in oil hole, the oil inlet hole and/or the oil outlet hole are/is arranged inside the shell, so that dust is prevented through the shell, and a dust cap does not need to be arranged on a check valve arranged on the oil inlet hole and the oil outlet hole; secondly, prior art sets up dustproof cap externally, still need consider dustproof cap and shell axial whether interfere, and the minimum wheel hub length that needs is great, and some industrial and mining can not satisfy, and the technical scheme of this application then need not consider the interference problem, and wheel hub's minimum length can further shorten.

Referring to fig. 1 to 4, in the present embodiment, the first hydraulic hub 1 includes a first outer sleeve 11 and a first inner sleeve 16, the first outer sleeve 11 is sleeved outside the first inner sleeve 16, and the first oil storage chamber 4 is located between the first outer sleeve 11 and the first inner sleeve 16;

the first outer sleeve 11 is provided with a first limiting structure 12, and the first limiting structure 12 is used for limiting the movement of the housing 3 in at least one direction in the axial direction of the first hydraulic hub 1.

In practice, the housing may be moved in the axial direction of the first sleeve during use, which on the one hand allows movement of the housing in this direction and on the other hand does not allow too much movement of the housing in the axial direction.

Through setting up the first limit structure of this application, can support the shell when the shell motion is too big.

In the present application, the oil inlet hole 14 and/or the oil outlet hole 15 are provided on the first limit structure 12.

In the present embodiment, the oil inlet hole 14 and the oil outlet hole 15 are provided on the first limit structure 12.

In other embodiments, the oil inlet hole 14 or the oil outlet hole 15 is provided on the first stopper structure 12.

In one embodiment, the first position-limiting structures 12 are a plurality of structures, and are uniformly distributed in the circumferential direction of the first outer sleeve 11. Its advantage lies in, when setting up a plurality of first limit structure 12, is equivalent to and is a plurality ofly through getting rid of the material cutting under the first limit structure is the whole ring state, can further lighten wheel hub's weight, makes equipment operation more steady.

In the structure that first limit structure 12 is a plurality of, the inlet port sets up on one or more of them first limit structure, and the oil outlet sets up on one or more first limit structure.

A plurality of oil inlets or a plurality of oil outlets can be arranged on the first limiting structure, and only one oil inlet or one oil outlet can be arranged on the first limiting structure.

Referring to fig. 1 to 4, in the present embodiment, the first position-limiting structure 12 is a ring-shaped structure and is disposed around the circumference of the first outer sleeve 11. In this embodiment, the inlet port is one, and the oil outlet is one, all sets up on first limit structure, and the inlet port sets up with the oil outlet symmetry.

First limit structure sets up the annular structure who continues outside extension from first wheel hub excircle, and inlet port 14 and the advantage that oil outlet 15 set up on first limit structure lie in: equivalently, the thickness of the first outer sleeve is increased, the first outer sleeve has enough thickness to bear the oil pressure in the oil storage cavity and is provided with the oil inlet valve and the oil outlet valve, and therefore the maximum aperture of the existing model is improved. For example, in this embodiment, first limit structure sets up as the excircle arch that continues to extend outward from first wheel hub excircle, and radial outside protruding thickness is 5mm, and then diameter direction increase size 10mm, if this model maximum aperture is 100mm among the prior art, then use the technique of this application, set up inlet port and oil outlet on the excircle arch after, can increase 110mm at the maximum aperture of this model. The range of the aperture is increased, the problem that the size needs to be increased due to the aperture cannot occur under some working conditions, and the use cost of a user is saved.

Referring to fig. 1 to 4, in the present embodiment, the hydraulic serpentine spring coupling with oil holes inside further includes a first flange 13, and the first flange 13 is used for connecting with other hubs; the first stop structure 12 is connected to a first flange 13.

In one embodiment, the first flange is an annular flange, the first flange 13 is provided with a spline for accommodating a serpentine spring, and the first flange 13 is connected with other hubs through the serpentine spring.

In one embodiment, the number of the first flanges is plural, and the first flanges are uniformly distributed in the circumferential direction of the first outer sleeve.

In this embodiment the first flange is arranged at one end of the first casing, it being understood that the first flange may also be arranged at a distance from one end of the first casing.

In this embodiment, the first flange is used for connection with other hubs.

In one embodiment, the hydraulic serpentine spring coupling with the built-in oil hole further comprises a second hydraulic hub, and in one embodiment, the second hydraulic hub has the same structure as the first hydraulic hub, and the description of the first hydraulic hub can be applied to the description of the second hydraulic hub.

In this embodiment, the second hydraulic hub has a structure different from that of the first hydraulic hub, in this embodiment, the second hydraulic hub 2 includes a second outer sleeve 21 and a second inner sleeve 24, the second inner sleeve 24 is sleeved inside the second outer sleeve 21, a second oil storage cavity 5 is provided between the second inner sleeve and the second outer sleeve, at least one outer circular protrusion 22 and a second flange 23 are provided on an outer wall of the second outer sleeve 21, the second flange 23 is used for being connected with the first hydraulic hub 1, an oil hole is provided on the outer circular protrusion 22, and the oil hole is communicated with the second oil storage cavity 5.

In this embodiment, the first flange 13 may be arranged just on the end face of one end of the first outer sleeve, or may be at a distance from the end face of the first outer sleeve, for example, 10cm, 5cm, etc.

In other embodiments, one of the oil inlet hole or the oil outlet hole is provided on the first limiting structure 12, and the other of the oil inlet hole or the oil outlet hole is provided on another position of the first hydraulic hub, for example, the outer wall of the first hydraulic hub.

In the present embodiment, the second hydraulic hub 2 is at least partially arranged in the housing 3, and the oil inlet and/or oil outlet on the second hydraulic hub 2 is arranged in the part of the second hydraulic hub 2 arranged in said housing.

In this embodiment, the second flange may be disposed right on the end face of one end of the second outer sleeve, or may be spaced from the end face of the second outer sleeve by a certain distance, for example, 10cm, 5cm, or the like.

In this embodiment, the outer protrusion 22 is provided with an oil inlet and an oil outlet.

In other embodiments, one of the oil inlet hole or the oil outlet hole is provided on the outer circular protrusion 22, and the other of the oil inlet hole or the oil outlet hole is provided on other positions of the second hydraulic hub, for example, the outer wall of the second hydraulic hub.

Referring to fig. 1 and 3, in the present embodiment, the oil inlet hole of the first limit structure 12 is a cylindrical through hole, which is completely accommodated in the first limit structure.

In the embodiment shown in fig. 1, the oil inlet hole in the outer boss is a cylindrical through hole that is completely received in the outer boss.

Referring to fig. 4, in the present embodiment, a notch is provided on a peripheral side wall of the oil inlet 14 and/or a peripheral side wall of the oil outlet 15 of the first limiting structure 12.

In this embodiment, a notch is disposed on a peripheral side wall of the oil inlet hole on the first limiting structure.

In this embodiment, the peripheral side wall of the oil outlet on the first limiting structure is provided with a notch.

Its advantage lies in, can reduce the width of the inner space of shell, and under the demand that the inside width of shell can satisfy serpentine spring width, first limit structure's axial width as long as can guarantee the spacing demand of shell can, the axial width that does not need to set up is too big, can reduce wheel hub's whole weight for equipment operation is more steady.

It can be understood that the peripheral side wall of the oil inlet hole on the first limiting structure is provided with a notch, and the peripheral side wall of the oil outlet hole on the first limiting structure is provided with a notch. Or a gap is arranged on the peripheral side wall of the oil inlet hole on the first limiting structure or the peripheral side wall of the oil outlet hole on the first limiting structure.

In this embodiment, the oil inlet hole on the outer circular protrusion has a notch on its peripheral sidewall.

In this embodiment, the peripheral side wall of the oil outlet on the outer circular protrusion is provided with a notch.

It can be understood that the peripheral side wall of the oil inlet hole on the outer circular protrusion is provided with a notch, and the peripheral side wall of the oil outlet hole on the outer circular protrusion is provided with a notch. Or a gap is arranged on the peripheral side wall of the oil inlet hole on the excircle protrusion or the peripheral side wall of the oil outlet hole on the excircle protrusion.

When the first hydraulic wheel hub and the second hydraulic wheel hub are installed and used, the check valves are required to be installed on the oil inlet hole and the oil outlet hole, in the installation process, the check valves are required to be screwed by a wrench, the operation space of the oil inlet hole and the oil outlet hole is large, the axial size of the first limiting structure needs to be increased, if the axial size is increased, the internal width of the shell needs to be increased, and the weight and the cost of the shell are increased; because the technical scheme of this application has set up inlet port and oil outlet in the inside of shell, need not set up dustproof cap alone on inlet port and oil outlet, so even there is some breach in inlet port and oil outlet, also can satisfy user demand.

It is understood that when the number of the oil inlet holes 14 and the oil outlet holes on the first limiting structure 12 is plural, one or more oil inlet holes or oil outlet holes may have a gap, or all of the oil inlet holes or oil outlet holes may have a gap.

It is understood that when the number of the oil inlet holes and the oil outlet holes on the outer circular protrusion 22 is plural, one or more of the oil inlet holes or the oil outlet holes may have a notch, or all of the oil inlet holes or the oil outlet holes may have a notch.

Referring to fig. 1, in the present embodiment, the number of the first position-limiting structures 12 is one, and the number of the outer protrusions 22 is one.

In this embodiment, the first limiting structure is an annular protrusion, which is circumferentially disposed around the first outer sleeve.

In this embodiment, the outer circumferential protrusion is an annular protrusion that is circumferentially disposed about the second outer jacket.

It will be appreciated that in other embodiments the number of first stop formations may be different to the number of cylindrical projections, for example one, 2 or some other.

In this embodiment, the bellied quantity of excircle is two, and two excircle archs are provided with the inlet port in the circumference symmetry setting of second overcoat, and another excircle is provided with the oil outlet in the arch.

In the present application, the outer circumferential protrusion may be provided in one or more in the axial direction of the second outer jacket.

In one embodiment, the outer circumferential protrusion is provided at an end of the second outer sleeve remote from the second flange.

In one embodiment, the outer circumferential protrusion is disposed at a middle portion of the second outer jacket.

In this application, the middle part sets up annular protruding, and when the large aperture hydraulic coupling wheel hub atress of this application, the middle part warp most easily, and is protruding through setting up the third excircle, can increase the holding capacity at middle part, prevents to warp.

In one embodiment, the number of the first limiting structures is multiple, and each first limiting structure is arranged at intervals along the circumferential direction of the first outer sleeve.

In one embodiment, the number of the outer circular protrusions is multiple, and the outer circular protrusions are arranged at intervals along the circumferential direction of the second outer sleeve.

In one embodiment, every two adjacent first limiting structures in the first limiting structures arranged at intervals are connected through reinforcing ribs, and in this way, the strength of the first hydraulic hub can be increased.

In one embodiment, every two adjacent excircle protrusions in the excircle protrusions arranged at intervals are connected through reinforcing ribs, and by adopting the mode, the strength of the second hydraulic hub can be increased.

Referring to fig. 1, in this embodiment, the first limit formation 12 is connected to a first flange 13.

The outer circular protrusion 22 is connected to a second flange 23.

In other embodiments, the first limiting structure 12 is arranged at a distance from the first flange 13.

The outer circular projection 22 is arranged at a distance from the second flange 23.

In the embodiment where the first limit structure 12 is arranged at a distance from the first flange 13, a reinforcing rib is arranged between the first limit structure 12 and the first flange.

In the embodiment where the outer circular protrusion 22 is arranged at a distance from the second flange 23, a stiffener connection is arranged between the outer circular protrusion 22 and the second flange.

In the present embodiment, the dimension of the first position-limiting structure 12 in the axial direction of the first outer jacket 11 is less than 19mm to 50 mm.

In one embodiment, the size of the outer circular protrusion 22 in the axial direction of the second outer sleeve 21 is less than 19mm to 50 mm.

It will be appreciated that the dimension of the first stopper structure 12 in the axial direction of the first outer sleeve 11 may be set as desired, for example, in an embodiment in which a notch is provided on the peripheral side wall of the oil inlet hole 14 and/or the peripheral side wall of the oil outlet hole 15, the dimension of the first stopper structure in the axial direction of the first outer sleeve 11 may be further reduced, thereby further reducing the weight of the entire first hydraulic hub.

It will be appreciated that the dimension of the outer circumferential projection 22 in the axial direction of the second outer sleeve 21 may be set as desired, for example, in an embodiment in which a notch is provided on the circumferential side wall of the oil inlet hole and/or the circumferential side wall of the oil outlet hole, the dimension of the outer circumferential projection in the axial direction of the second outer sleeve may be further reduced, thereby further reducing the weight of the entire first hydraulic hub.

In the present embodiment, the dimension of the first limit structure 12 in the radial direction of the first outer jacket 11 is smaller than the dimension of the first flange 13 in that direction; and/or the presence of a gas in the gas,

the dimension of the outer circular projection 22 in the radial direction of the second outer sleeve 21 is smaller than the dimension of the second flange 23 in that direction.

In this embodiment, a first groove is formed at a connection position of the outer wall of the first outer sleeve 11 and the first limiting structure 12; and/or the presence of a gas in the gas,

and a second groove is formed at the connecting position of the outer wall of the second outer sleeve 21 and the outer circle bulge 22.

In this embodiment, the first groove is an annular groove or a plurality of discontinuous grooves circumferentially disposed along the outer wall of the outer sleeve.

In this embodiment, the second groove is an annular groove or a plurality of discontinuous grooves circumferentially disposed along the outer wall of the outer sleeve.

In this embodiment, the first groove concave direction is concave toward the center line direction of the first hydraulic hub.

In this embodiment, first recess includes first section and second section, and first section one end and the contact of first limit structure, the other end of first section and the one end of second section are connected.

In this embodiment, the first segment is an arc segment extending and bending from one end to the other end;

the second section is a straight line section.

With this arrangement, the torsional stress at the junction of the outer wall of the first sheath 2 and the first stop formation 12 is reduced.

In this embodiment, the second groove concave direction is concave toward the center line direction of the second hydraulic hub.

In this embodiment, the second recess includes first section and second section, and first section one end and excircle protruding contact, the other end of first section is connected with the one end of second section.

the second section is a straight line section.

By adopting the structure, the torsional stress at the joint of the outer wall of the second outer sleeve and the excircle protrusion can be reduced.

In this embodiment, the oil inlet 14 and the oil outlet 15 are both disposed on the first limiting structure 12, and the oil inlet 14 and the oil outlet 15 on the first limiting structure 12 are symmetrically disposed in the circumferential direction of the first limiting structure;

the oil inlet and the oil outlet on the excircle protrusion 22 are both arranged on the excircle protrusion 22, and the oil inlet and the oil outlet on the excircle protrusion are symmetrically arranged in the circumferential direction of the second excircle protrusion.

It can be understood that the number of the oil inlet holes 14 and the number of the oil outlet holes on the first limiting structure 12 can be set according to the requirement.

It can be understood that the number of the oil inlet holes and the number of the oil outlet holes on the excircle protrusion can be set according to requirements.

In the embodiment, the shell is provided with a shell through hole;

the hydraulic serpentine spring coupler with the built-in oil hole further comprises a dustproof cap which is detachably mounted at the through hole of the shell.

By adopting the mode, when oil is required to be added, the oil pipe penetrates through the shell through hole on the shell and is connected with the oil inlet hole, so that hydraulic oil is provided, and when oil is not required to be added, the shell through hole on the shell is plugged through the dustproof cap. On the one hand, need not dismantle the shell when refueling, facilitate the use, on the other hand can not be owing to be provided with inside the shell through-hole leads to the dust to enter into the shell.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a built-in oilhole hydraulic pressure snake spring shaft coupling which characterized in that, built-in oilhole hydraulic pressure snake spring shaft coupling includes:

the hydraulic wheel comprises a first hydraulic wheel hub (1), wherein the first hydraulic wheel hub (1) is provided with a first oil storage cavity (4), an oil inlet hole (14) and an oil outlet hole (15), and the oil inlet hole (14) and the oil outlet hole (15) are respectively communicated with the first oil storage cavity (4);

the shell (3), install shell (3) on first hydraulic pressure wheel hub (1), inlet port (14) with oil outlet (15) are in the position on first hydraulic pressure wheel hub (1) is located the inside of shell (3).

2. The serpentine spring coupling with the oil hole inside according to claim 1, wherein the first hydraulic hub (1) comprises a first outer sleeve (11) and a first inner sleeve (16), the first outer sleeve (11) is sleeved outside the first inner sleeve (16), and the first oil storage chamber (4) is located between the first outer sleeve (11) and the first inner sleeve (16);

the first outer sleeve (11) is provided with a first limiting structure (12), and the first limiting structure (12) is used for limiting the movement of the shell (3) in at least one direction in the axial direction of the first hydraulic hub (1).

3. The serpentine spring coupling with the oil hole inside according to claim 2, wherein the oil inlet hole (14) and/or the oil outlet hole (15) is provided on the first stopper structure (12).

4. The serpentine spring coupling with the oil hole inside according to any one of claims 2 to 3, wherein the first limit structures (12) are provided in plurality and uniformly distributed in the circumferential direction of the first outer sleeve (11); or the like, or, alternatively,

the first limiting structure (12) is of an annular structure and is arranged around the circumference of the first outer sleeve (11).

5. The internal oil hole hydraulic serpentine spring coupling as recited in claim 2, further comprising a first flange (13), wherein the first flange (13) is adapted to be connected to another hub;

the first limiting structure (12) is connected with the first flange (13).

6. The hydraulic serpentine spring coupling with the built-in oil hole as claimed in claim 5, wherein the hydraulic serpentine spring coupling with the built-in oil hole further comprises a second hydraulic hub (2), the second hydraulic hub (2) comprises a second outer sleeve (21) and a second inner sleeve (24), the second inner sleeve (24) is sleeved inside the second outer sleeve (21), a second oil storage cavity (5) is formed between the second inner sleeve and the second outer sleeve, at least one outer circular protrusion (22) and a second flange (23) are arranged on the outer wall of the second outer sleeve (21), the second flange (23) is used for being connected with the first hydraulic hub (1), an oil hole is arranged on the outer circular protrusion (22), and the oil hole is communicated with the second oil storage cavity (5).

7. The serpentine spring coupling with the built-in oil hole as claimed in claim 2, wherein a notch is provided on a peripheral side wall of the oil inlet hole and/or a peripheral side wall of the oil outlet hole provided on the first stopper structure (12).

8. The serpentine spring coupling with the oil hole therein according to claim 5, wherein the first stopper (12) is an annular projection, the first stopper (12) is radially away from the outer wall of the first outer sleeve (11), and one axial side of the first stopper (12) is connected to an axial side of the first flange (13).

9. The serpentine spring coupling with the oil hole inside according to claim 8, wherein a first groove is formed at a connection position of the outer wall of the first outer sleeve (11) and the first stopper (12).

10. A hydraulic hub, characterized in that it is a first hydraulic hub according to any one of claims 1 to 9; and a hoisting blind hole with a central line penetrating through the gravity center of the wheel hub is formed in the first outer sleeve of the first hydraulic wheel hub.