CN202790169U

CN202790169U - Novel hydraulic expansion casing

Info

Publication number: CN202790169U
Application number: CN 201220421777
Authority: CN
Inventors: 高润
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2013-03-13
Anticipated expiration: 2022-08-14

Abstract

The utility model discloses a novel hydraulic expansion casing, which mainly consists of an outer casing, compression rings and end covers. The outer casing is a hollow cylinder with axial conical grooves; each compression ring is a conical sleeve; the compression rings are arranged cavities respectively formed by the end covers and the axial conical grooves of the outer casing; both ends of the corresponding compression ring are respectively provided with a mounting oil cavity and a dismounting oil cavity which are communicated with oil holes; the inner conical surface and the outer conical surface of the corresponding compression ring are respectively provided with an annular oil groove; each end cover is fixedly arranged at one end of the outer casing through a bolt; and the end covers and the outer casing are sealed by adopting O-shaped rings. Compared with the prior art, the hydraulic expansion casing disclosed by the utility model is of an integral structure, i.e. the dismounting oil cavities are additionally arranged, so that mounting, dismounting and maintenance are convenient; and as a compression ring structure is adopted, no axial displacement is generated, and a range of application is broader. The novel hydraulic expansion casing disclosed by the utility model not only can be used as an expansion casing independently but also can be combined with various couplings for use.

Description

A kind of novel hydraulic expansion set

Technical field

The utility model relates to a kind of link, specifically a kind of hydraulic expanding cover that utilizes hydraulic expansion principle coupling shaft and hole.

Background technique

Hydraulic expanding cover is a kind of keyless joint device, and expansion set is a kind of keyless joint device, is mainly used to coupling shaft and hub.Traditional expansion set generally is by tighting a bolt, produce pressure by the conical surface between junction plane, coming transmitting torque by frictional force.For the structure of hydraulic expansion, mainly formed by a heavy wall overcoat with flange plate, a thin wall internal sleeve and an end cap.The end face of two sleeves docks and joins together by bolt, inner sleeve is enclosed within the overcoat, the outer surface of inner sleeve and the internal surface of overcoat are a kind of in the same way with the less conical surface of tapering, one oil inlet hole is arranged on the barrel of overcoat and unload oilhole, oil inlet hole has sealing plug with unloading in the oilhole, end bracket enclosed covers on the other end relative with end face of flange of overcoat, and two sleeves form closed cavity (being installed into oil pocket) by the end face of flange docking of overcoat.Squeeze into high pressure oil by oil inlet hole, make the very high pressure of generation between the matching surface, by overcoat and inner sleeve, the frictional force transmitting torque between inner sleeve and the transmission shaft.

In use there is following problem in the tradition expansion set:

1. expansion set is many installations in use, and requires symmetry to tighten when tightening attachment screw, needs to use torque spanner progressively to tighten according to 1/4T, 1/2T, 3/4T, the 1T of the specified screw-down torque of screw in practical operation, wastes time and energy.

2. expansion set is more of a specified duration service time, more gets rusty easily between the conical surface, causes dismounting very difficult.

3. hydraulic expansion connects because main part is comprised of a heavy wall overcoat and a thin wall internal sleeve, an end cap, and when coupling was installed, oil inlet hole was squeezed into high pressure oil, and high pressure oil promotes overcoat and moves axially, and produces the magnitude of interference transmitting torque by the conical surface.Because cone angle is smaller, it is larger to make overcoat move axially distance, generally will mobile 20-30mm.If when two coupling are joined together to form the coupling use of the whole series with elastic element or non-resilient element again, move axially and want 40-60mm, this is not all right in a lot of occasions.As: in the situation that motor and speed reducer, speed reducer and working shaft position are fixed, it is unallowed moving axially.Therefore, the industry of above-mentioned hydraulic structure use is greatly limited.

4. hydraulic expansion connects owing to only have one to be installed into oil pocket, do not dismantle oil suction chamber, during dismounting, squeeze into high pressure oil by unloading oilhole, by acting on the axial force dismounting couplers that resolution of forces produces on the conical surface, this axial force is very limited, and when coupling was larger, dismounting became very difficult even can not dismantle.

Since the overcoat of coupling to move axially distance larger, be sealed into slipper seal between overcoat and the end cap, large or use when frequent when high pressure oil pressure, the Sealing of slipper seal is easy to damage, and can produce leakage phenomenon when serious.

The model utility content

The utility model is intended to the problem that exists for prior art, and a kind of novel hydraulic expansion set of installing, dismantle and keeping in repair be convenient to is provided.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of novel hydraulic expansion set mainly is comprised of overcoat, pressure ring and end cap.Overcoat is a hollow cylinder with axial cone tank, axially cone tank is divided into inside and outside two-part with overcoat, part near axis is interior ring, another part is outer shroud, the interior ring of overcoat is provided with compensating groove, and the effect of overcoat is pressure and the frictional force transmitting torque by the radial deformation generation of inside and outside ring.Pressure ring places in the cavity of end cap and the axial cone tank formation of overcoat, pressure ring is conical sleeve, the tapering with the axial cone tank inwall of overcoat, outer wall is identical respectively for the tapering of inside and outside two conical surfaces of pressure ring, the axial cone tank of pressure ring small end and overcoat has the dismounting oil pocket between the bottom, and the dismounting oil pocket communicates with oilhole; Between the large end of pressure ring and the end cap installation oil pocket is arranged, oil pocket is installed to communicate with oilhole, on inside and outside two conical surfaces of pressure ring annular oil groove is arranged, the effect of pressure ring is to produce to move axially under the effect of high pressure oil, moving axially realization to the compression of overcoat radial direction or unclamp by pressure ring.End cap is bolted the end in overcoat, adopts the sealing of O type circle between end cap and the overcoat.

A kind of novel hydraulic expansion set of the utility model compared with prior art has following beneficial effect:

1, a kind of novel hydraulic expansion set of the utility model is an overall structure, and the user only needs simply expansion set to be contained on the axle when installing and using, and then utilizes the high pressure oil pump pressurization to get final product, and it is time saving and energy saving to install.

2, a kind of novel hydraulic expansion set of the utility model has increased the dismounting oil pocket, is convenient to very much installing/dismounting and maintenance.

3, a kind of novel hydraulic expansion set of the utility model adopts ring structure, only has the pressure ring can move left and right in practical operation, and expanding structure integral body does not have axial displacement, and using scope is larger.

4, a kind of novel hydraulic expansion set of the utility model adopts the end face seal of O type circle, thereby has greatly reduced the possibility that oil pressure leaks.

5, a kind of novel hydraulic expansion set of the utility model can be combined with multiple coupling, and overcoat increases a flanged surface, by bolt or elastic element two half-couplings (accompanying drawing 2) is linked together.

Below in conjunction with accompanying drawing a kind of novel hydraulic expansion set of the utility model is described further.

Description of drawings

Fig. 1 is the structural representation of a kind of novel hydraulic expansion set of the utility model.

Fig. 2 is the structural representation that a kind of novel hydraulic expansion set of the utility model is combined with coupling.

Among the figure, the 1-end cap; 2,4-O type circle; 3-installs oil pocket; 5,6,12,14-compensating groove; The 7-bolt; The 8-overcoat; The 9-pressure ring; 10,13,17-oilhole; 11-dismantles oil pocket; 15,16-annular oil groove; 18-connects oilhole.

Embodiment

As shown in Figure 1, a kind of novel hydraulic expansion set of the utility model, structure comprises overcoat 8, pressure ring 9 and end cap 1; Overcoat 8 is to connect all-in-one-piece with the hollow cylinder of axial cone tank by outer shroud and interior boxing, axially cone tank is divided into inside and outside two-part with overcoat 8, part near axis is interior ring, another part is outer shroud, the stress that distortion produces when having compensating

groove

5,6,12,14 to be used for discharging swelling on the interior ring of overcoat 8, guarantee sealing and swelling performance, the effect of overcoat 8 is pressure and the frictional force transmitting torques by the radial deformation generation of inside and outside ring.Pressure ring 9 places in the cavity of end cap 1 and overcoat 8 axial cone tanks formation, pressure ring 9 is conical sleeve, the tapering with overcoat 8 axial cone tank inwalls, outer wall is identical respectively for the tapering of pressure ring 9 inside and outside two conical surfaces, the axial cone tank of pressure ring 9 small ends and overcoat has dismounting oil pocket 11 between the bottom, and dismounting oil pocket 11 communicates with oilhole 10; Between pressure ring 9 large ends and the end cap 1 oil pocket 3 of installation is arranged, oil pocket 3 is installed to communicate with oilhole 17,

annular oil groove

15,16 is arranged with oilhole 13 and be connected oilhole 18 on pressure ring 9 inside and outside two conical surfaces and communicate, the effect of pressure ring 9 is to produce to move axially under the effect of high pressure oil, realizes the compression of overcoat 8 radial direction or unclamps by moving axially of pressure ring 9.End cap 1 is fixed in an end of overcoat 8 by bolt 7, and O type circle 2,4 is arranged between end cap 1 and the overcoat 8.

Operating process of the present utility model is: high pressure oil enters by oilhole 17 and installs in the oil pocket 3, promotes pressure ring 9 and moves right, and pressure ring 9 compresses overcoat 8 by interior male cone (strobilus masculinus), relies on the pressure between the conical surface to produce the resiliently deformable compression axis, by the friction transmitting torque; Male cone (strobilus masculinus) all has

annular oil groove

15,16 on the pressure ring 9, and lubricant oil cooperates between the conical surface lubricate by what oilhole 13 entered pressure ring 9 and overcoat 8; During dismounting, high pressure oil enters in the dismounting oil pocket 11 by oilhole 10, promoting pressure ring 9 is moved to the left, make and form the gap between the conical surface, resiliently deformable is recovered, and can pull down whole expansion set from axle, during dismounting, lubricant oil cooperates between the conical surface lubricate by what oilhole 13 entered pressure ring 9 and overcoat 8 equally.O type circle 2,4 is respectively charged in the circular groove of end cap 1.Compensating

groove

5,6,12 on the

overcoat

8,14 can discharge the stress that its distortion produces, and guarantees sealing and the swelling performance of end face.

As shown in Figure 2, a kind of novel hydraulic expansion set of the utility model, overcoat 8 has step, can be combined with multiple coupling, such as Falk flexible coupling, crown gear coupling and flange rigid coupling etc., compare using scope with the conventional hydraulic expanding structure and enlarge to some extent.

The above embodiment is preferred embodiment a kind of of a kind of novel hydraulic expansion set of the utility model, and the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.

Claims

1. a novel hydraulic expansion set mainly is comprised of overcoat (8), pressure ring (9) and end cap (1); It is characterized in that: overcoat (8) is a hollow cylinder with axial cone tank; Pressure ring (9) is conical sleeve, and the tapering of inside and outside two conical surfaces of pressure ring (9) axially the tapering of cone tank inwall, outer wall is identical with overcoat (8) respectively.

2. a kind of novel hydraulic expansion set according to claim 1, it is characterized in that: pressure ring (9) places in the cavity of the axial cone tank formation of end cap (1) and overcoat (8), and pressure ring (9) small end axially has dismounting oil pocket (11) to communicate with oilhole (10) between the cone tank bottom with overcoat (8); Pressure ring (9) hold greatly with end cap between have installation oil pocket (3) to communicate with oilhole (17).

3. a kind of novel hydraulic expansion set according to claim 1, it is characterized in that: the interior ring of overcoat (8) is provided with compensating groove (5,6,12,14).

4. a kind of novel hydraulic expansion set according to claim 1 is characterized in that: annular oil groove (15,16) is arranged with oilhole (13) and be connected oilhole (18) on inside and outside two conical surfaces of pressure ring (9) to communicate.

5. a kind of novel hydraulic expansion set according to claim 1 is characterized in that: O type circle (2,4) is arranged between described end cap (1) and the overcoat (8).

6. a kind of novel hydraulic expansion set according to claim 1, it is characterized in that: overcoat (8) is connected into one by outer shroud and interior boxing.