CN102797763A

CN102797763A - Novel hydraulic expansion sleeve

Info

Publication number: CN102797763A
Application number: CN2012103024475A
Authority: CN
Inventors: 高润
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2012-11-28

Abstract

The invention discloses a novel hydraulic expansion sleeve, mainly consisting of an outer sleeve, a compression ring and an end cover. the outer sleeve is a hollow cylinder body with an axial conical slot, the compression ring is a conical sleeve and is arranged in a cavity formed by the end cover and the axial conical slot of the outer sleeve, two ends of the compression ring are respectively provided with an assembling oil cavity and a disassembling oil cavity, the assembling oil cavity and the disassembling oil cavity are communicated with an oil hole, inner and outer conical surfaces of the compression ring are respectively provided with an annular oil slot, the end cover is fixed at one end of the outer sleeve through a bearing, and the end cover and the outer cover are sealed by an O-shaped ring. Compared with the prior art, the novel hydraulic expansion sleeve disclosed by the invention has the advantages that an integral structure is adopted, the disassembling oil cavity is arranged so as to realize a convenient disassemble and maintain effect, a structure of the compression ring is adopted to prevent axial displacement, and the application range is large. The novel hydraulic expansion sleeve disclosed by the invention can be used as an expansion sleeve singly and can be also used together with various couplings.

Description

A kind of novel hydraulic expansion set

Technical field

The present invention relates to a kind of link, specifically is a kind of hydraulic expanding cover that utilizes hydraulic pressure tensioner 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, mainly is used for coupling shaft and hub.Traditional expansion set generally is through tighting a bolt, lean on the conical surface between junction plane, to produce pressure, coming transmitting torque through frictional force.For the structure of hydraulic pressure swelling, mainly form by cover and an end cap in a heavy wall overcoat that has a flange plate, the thin-walled.The end face of two sleeves docks and joins together through bolt; In the interior condom its external sleeve; The outer surface of interior cover and the internal surface of overcoat are a kind of in the same way with the less conical surface of tapering, an oil inlet hole is arranged on the barrel of overcoat and unload oilhole, and 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 its external sleeve, and two sleeves form closed cavity (being installed into oil pocket) through the end face of flange butt joint of overcoat.Squeeze into high pressure oil through oil inlet hole, make the very high pressure of generation between the matching surface, through overcoat and interior cover, the frictional force transmitting torque between interior cover and the transmission shaft.

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

1. expansion set is many installations in use, and when tightening attachment screw, requires symmetry to tighten, and needs use torque spanner is progressively tightened 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 of a specified duration more service time, gets rusty easily more between the conical surface, causes very difficulty of dismounting.

3. the hydraulic pressure swelling connects because main part is made up of cover, an end cap in a heavy wall overcoat and the thin-walled, and when coupling was installed, oil inlet hole was squeezed into high pressure oil, and high pressure oil promotes overcoat and moves axially, through conical surface generation magnitude of interference transmitting torque.Because cone angle is smaller, it is bigger to make overcoat move axially distance, generally will move 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: under the situation of motor and speed reducer, speed reducer and working shaft fixed-site, it is unallowed moving axially.Therefore, the industry of above-mentioned hydraulic structure use has received great restriction.

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

Since the overcoat of coupling to move axially distance bigger, be sealed into slipper seal between overcoat and the end cap, big 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.

Summary of the invention

The present invention is intended to the problem that exists to existing technology, and a kind of novel hydraulic expansion set of installing, dismantle and keeping in repair be convenient to is provided.

The technical solution adopted for the present invention to solve the technical problems is: a kind of novel hydraulic expansion set, mainly form by overcoat, pressure ring and end cap.Overcoat is one to have the hollow cylinder of 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 an outer shroud, and the interior ring of overcoat is provided with compensating groove, and the effect of overcoat is pressure and the frictional force transmitting torque through 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 a 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 big 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 under the effect of high pressure oil, to produce to move axially, and moves axially realization compressing or unclamp the overcoat radial direction through pressure ring.End cap in an end of overcoat, adopts the sealing of O type circle through bolt between end cap and the overcoat.

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

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

2, a kind of novel hydraulic expansion set of the present invention 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 present invention adopts the pressure ring structure, in practical operation, has only the pressure ring can move left and right, and the swelling structural entity does not have axial displacement, and using scope is bigger.

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

5, a kind of novel hydraulic expansion set of the present invention can be used in combination with multiple coupling, and overcoat increases a flanged surface, through 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 present invention is described further.

Description of drawings

Fig. 1 is the structural representation of a kind of novel hydraulic expansion set of the present invention.

The structural representation that Fig. 2 is used in combination with coupling for a kind of novel hydraulic expansion set of the present invention.

Among the figure, the 1-end cap; 2,4-0 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 present invention, structure comprises overcoat 8, pressure ring 9 and end cap 1; Overcoat 8 is the hollow cylinders that had axial cone tank by outer shroud and interior loops welded all-in-one-piece; Axially cone tank is divided into inside and outside two-part with overcoat 8; Part near axis is interior ring, and another part is an outer shroud, the stress that distortion produces when having compensating

groove

5,6,12,14 to be used for the release 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 through 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 a 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 big 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 and communicate on inside and outside two conical surfaces of pressure ring 9; The effect of pressure ring 9 is under the effect of high pressure oil, to produce to move axially, and moves axially realization compressing or unclamp overcoat 8 radial direction through pressure ring 9.End cap 1 is fixed in an end of overcoat 8 through bolt 7, and O type circle 2,4 is arranged between end cap 1 and the overcoat 8.

Operating process of the present invention is: high pressure oil gets into through oilhole 17 and installs in the oil pocket 3, promotes pressure ring 9 and moves right, and pressure ring 9 compresses overcoat 8 through interior male cone (strobilus masculinus), relies on the pressure between the conical surface to produce the resiliently deformable compression axis, through 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 through what oilhole 13 got into pressure rings 9 and overcoat 8; During dismounting, high pressure oil gets in the dismounting oil pocket 11 through oilhole 10, promotes pressure ring 9 and 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 through what oilhole 13 got into pressure rings 9 and overcoat 8 equally.O type circle 2,4 is respectively charged in the circular groove of end cap 1.Compensating

groove

5,6,12,14 on the overcoat 8 can discharge the stress that its distortion produces, and guarantees the sealing and the swelling performance of end face.

As shown in Figure 2, a kind of novel hydraulic expansion set of the present invention, overcoat 8 has step, can be used in combination with multiple coupling, like Falk flexible coupling, crown gear coupling and flange rigid coupling etc., compares using scope with conventional hydraulic swelling structure and enlarges to some extent.

The above embodiment is preferred embodiment a kind of of a kind of novel hydraulic expansion set of the present invention, and common variation that those skilled in the art carries out in technological scheme scope of the present invention and replacement all should be included in protection scope of the present invention.

Claims

1. a novel hydraulic expansion set mainly is made up of overcoat (8), pressure ring (9) and end cap (1); It is characterized in that: overcoat (8) is one to have the hollow cylinder of axial cone tank; Pressure ring (9) is a 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 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) and communicate on inside and outside two conical surfaces of pressure ring (9);

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

6. a kind of novel hydraulic expansion set according to claim 1 is characterized in that: overcoat (8) is integral by outer shroud and interior loops welded.