CN203962719U - A kind of hydraulic expanding cover - Google Patents

A kind of hydraulic expanding cover Download PDF

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Publication number
CN203962719U
CN203962719U CN201420263861.4U CN201420263861U CN203962719U CN 203962719 U CN203962719 U CN 203962719U CN 201420263861 U CN201420263861 U CN 201420263861U CN 203962719 U CN203962719 U CN 203962719U
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CN
China
Prior art keywords
hole
overcoat
hydraulic expanding
expanding cover
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420263861.4U
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Chinese (zh)
Inventor
高润
Original Assignee
高润
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 高润 filed Critical 高润
Priority to CN201420263861.4U priority Critical patent/CN203962719U/en
Application granted granted Critical
Publication of CN203962719U publication Critical patent/CN203962719U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of hydraulic expanding cover, include the inner sleeve and the overcoat that are welded as a whole, between described inner sleeve and overcoat, form annular oil cavity, described overcoat is provided with two holes that are communicated with annular oil cavity respectively, on one of them oil hole, be provided with hexagonal socket head plug, another force feed hole is combined by bottom unthreaded hole and top tapped hole, in unthreaded hole, be provided with piston, piston initial position is arranged at one end of close tapped hole in unthreaded hole, by oil hole, in annular oil cavity and unthreaded hole, be full of lubricating grease and screw hexagonal socket head plug, during installation, to hexagonal flush end Cock screw in screwing in tapped hole, promoting piston is pressed into lubricating grease in annular oil cavity.The utlity model has following beneficial effect: overcoat and inner sleeve are structure as a whole, processing, installation, maintenance are conveniently; Fitting operation only need screw in a Cock screw and can realize, convenient and swift, registration.

Description

A kind of hydraulic expanding cover
Technical field
The utility model relates to mechanical connection basic part, specifically a kind of hydraulic expanding cover.
Background technique
Connection in mechanical transmission at present generally connects to transmit motion by key, adopt key Placement, because needs are processed keyway on axle and wheel hub, thereby reduced the intensity of workpiece, and bearing capacity is subject to the shearing of key itself and the restriction of crushing strength again.Because key coupling shaft is to poor location, shaft hole matching is often selected interference fit, needs heating during installation, more needs professional drawbench during dismounting, even destructive dismounting.Due to this reason, abroad five, the sixties develop a kind of Novel connection type, that is: expansion set connects.Expansion set is to connect without key, inner sleeve coordinates with axle and wheel hub respectively with overcoat, by tightening high-strength screw, make swell respectively and dwindle with the jacket and inner sleeve of cone match, thereby produce magnitude of interference with axle and wheel hub, the huge frictional force that relies on expansion set and pressure between axle and wheel hub to produce come transmitting torque, axial force or both with joint efforts.When needs are dismantled, by demounting bolt by the conical surface of inner-outer sleeve separately.Therefore China has formulated the NBS of expansion set, but mechanical type expansion set also exists number of drawbacks:
1, mechanical type expansion set at least forms by two, and what have even reaches five, and manufacturing is very complicated;
2, the installation of mechanical type expansion set need to be tightened a plurality of high-strength bolts, and installation is wasted time and energy;
When 3, mechanical type expansion set is installed, between expansion set self conical surface, between expansion set and axle, there is relative movement between expansion set and wheel hub, if do not cleaned out while installing, between surface of contact, can produce and grind wound, cause dismounting very difficult, when serious, cannot dismantle;
4, the wall thickness of mechanical type expansion set is inhomogeneous, and after bolt tightening, a thinner end margin can produce stress and concentrate, and can make axle crack even fracture;
When 5, expansion set is installed, need to smear rust preventive oil, otherwise expansion set cannot be dismantled after getting rusty.
Summary of the invention
For solving the technical problem of above-mentioned existence, the utility model provides a kind of hydraulic expanding cover, and integral structure only need be processed a screw and can realize during installing/dismounting, convenient and swift, long service life.
For achieving the above object, the technological scheme that the utility model adopts is:
A kind of hydraulic expanding cover, include the inner sleeve and the overcoat that are welded as a whole, between described inner sleeve and overcoat, form annular oil cavity, described overcoat is provided with two holes that are communicated with annular oil cavity respectively, on one of them oil hole, be provided with hexagonal socket head plug, another force feed hole is combined by bottom unthreaded hole and top tapped hole, in unthreaded hole, be provided with piston, piston initial position is arranged at one end of close tapped hole in unthreaded hole, by oil hole, in annular oil cavity and unthreaded hole, be full of hydraulic oil and screw hexagonal socket head plug, during installation, to hexagonal flush end Cock screw in screwing in tapped hole, promoting piston is pressed into hydraulic oil in annular oil cavity.
On described interior hexagonal flush end Cock screw, be provided with internal circlip, described check ring is arranged on and is arranged in the outer jump-ring slot putting.
Between the outside of described piston and unthreaded hole, be provided with O RunddichtringO.
The described dynamic balance weight hole that also comprises, described overcoat arranged outside has flange, and described dynamic balance weight hole is arranged on the cylindrical of flange.
Described overcoat cylindrical and flange connections are provided with compensating groove.
The cylindrical mounting end of the endoporus of described inner sleeve and overcoat is respectively arranged with angle of deflection, and described angle of deflection is 5-15 °.
The utlity model has following beneficial effect: overcoat and inner sleeve are structure as a whole, processing, installation, maintenance are conveniently; Fitting operation only need screw in a Cock screw and can realize, convenient and swift, registration; During installation, Cock screw, for radially screwing in, has been saved axial space, and while installing without endwisely slipping, avoid the damage to axle and wheel hub, can repeatedly install and use, extended its working life; Seal ring is set, prevents leakage of oil situation; Internal circlip is set, avoids Cock screw loosening; Dynamic balance weight hole is set, and circular runout is little, operates steadily.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the sectional drawing of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 1;
Fig. 4 is the utility model end face of flange schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
Be illustrated in figure 1 a specific embodiment of the present utility model, this hydraulic expanding cover, include the inner sleeve 1 and the overcoat 2 that are welded as a whole, between described inner sleeve 1 and overcoat 2, form annular oil cavity 3, described overcoat 2 is provided with two holes that are communicated with annular oil cavity 3 respectively, on one of them oil hole, be provided with hexagonal socket head plug 4, another force feed hole is combined by bottom unthreaded hole and top tapped hole, in unthreaded hole, be provided with piston 7, piston 7 initial positions are arranged at one end of close tapped hole in unthreaded hole, by oil hole, in annular oil cavity 3 and unthreaded hole, be full of lubricating grease and screw hexagonal socket head plug 4, during installation, to hexagonal flush end Cock screw 6 in screwing in tapped hole, promoting piston 7 is pressed into lubricating grease in annular oil cavity 3.
As preferred mode, described interior hexagonal flush end Cock screw 6 is provided with internal circlip 5 above, and described check ring 5 is arranged in the jump-ring slot being arranged on overcoat 2, prevents that Cock screw is loosening.
As preferred mode, between the outside of described piston 7 and unthreaded hole, be provided with O RunddichtringO 8, good sealing effect, prevents hydraulic fluid leak.
As preferred mode, the utility model also comprises dynamic balance weight hole 9, and described overcoat 2 arranged outside have flange, and described dynamic balance weight hole 9 is arranged on the cylindrical of flange, makes hydraulic expanding cover circular runout in High Rotation Speed working procedure very little.The cylindrical mounting end of the endoporus of described inner sleeve 1 and overcoat 2 is respectively arranged with angle of deflection, described angle of deflection is 5-15 °, cylindrical and the flange connections of described overcoat 2 are provided with compensating groove, avoid affecting because of the stress that distortion produces overcoat 2 working life of overcoat 2.
As preferred mode, the cylindrical mounting end of the endoporus of described inner sleeve 1 and overcoat 2 is respectively arranged with angle of deflection, is respectively as shown in Figure 3 E, F, and its angle is 5-15 °.
During installation first by the cylindrical of the endoporus of hydraulic expanding cover inner sleeve 1, overcoat 2 and corresponding axis and wheel hub wiped clean, then hydraulic expanding cover integral body is screwed in gently, after being in place, with inner hexagon spanner, interior hexagonal flush end Cock screw 6 is screwed into, then with hole, with clamp, internal circlip 5 is arranged in jump-ring slot.
During dismounting, first with hole, with clamp, internal circlip 5 is taken off, then with inner hexagon spanner, interior hexagonal flush end Cock screw 6 is unscrewed, between hydraulic expanding cover and axle and wheel hub, occur gap, can pull down hydraulic expanding cover.
In the present embodiment, as shown in Figure 4, on hydraulic expanding cover end face of flange, by laser, be carved with three place's product labellings, every place center line is separated by 120 °, first is in interior hexagonal flush end Cock screw place, having three information forms: the one, and single screw-driving mark, forms with annulus and the regular hexagon of arrow in the same way by two, and regular hexagon is in the inner side of annulus; The 2nd, the screw-down torque of interior hexagonal flush end Cock screw; The 3rd, " rotation is tightened " English explanation.Be rotated counterclockwise, the second place is marked with two information and forms: Yi Shi company product brand; Er Shi company network address.The 3rd place is marked with three information and forms: the one, and product name and specification; The 2nd, " made in China " English explanation; The 3rd, production code member.By laser marking, product type and screw-down torque are very clear, and each product has unique numbering, is convenient to after sales service.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.

Claims (6)

1. a hydraulic expanding cover, include the inner sleeve (1) and the overcoat (2) that are welded as a whole, between described inner sleeve (1) and overcoat (2), form annular oil cavity (3), it is characterized in that, described overcoat (2) is provided with two holes that are communicated with annular oil cavity (3) respectively, on one of them oil hole, be provided with hexagonal socket head plug (4), another force feed hole is combined by bottom unthreaded hole and top tapped hole, in unthreaded hole, be provided with piston (7), piston (7) initial position is arranged at one end of close tapped hole in unthreaded hole, by oil hole, in annular oil cavity (3) and unthreaded hole, be full of lubricating grease and screw hexagonal socket head plug (4), during installation, to hexagonal flush end Cock screw (6) in screwing in tapped hole, promoting piston (7) is pressed into lubricating grease in annular oil cavity (3).
2. a kind of hydraulic expanding cover according to claim 1, is characterized in that, described interior hexagonal flush end Cock screw (6) is provided with internal circlip (5) above, and described check ring (5) is arranged in the jump-ring slot being arranged on overcoat (2).
3. a kind of hydraulic expanding cover according to claim 1, is characterized in that, is provided with O RunddichtringO (8) between the outside of described piston (7) and unthreaded hole.
4. according to a kind of hydraulic expanding cover described in any one claim of claim 1-3, it is characterized in that, described hydraulic expanding cover also comprises dynamic balance weight hole (9), and described overcoat (2) arranged outside has flange, and described dynamic balance weight hole (9) is arranged on the cylindrical of flange.
5. a kind of hydraulic expanding cover according to claim 4, is characterized in that, described overcoat (2) cylindrical and flange connections are provided with compensating groove (10).
6. a kind of hydraulic expanding cover according to claim 1, is characterized in that, the cylindrical mounting end of the endoporus of described inner sleeve (1) and overcoat (2) is respectively arranged with angle of deflection, and described angle of deflection is 5-15 °.
CN201420263861.4U 2014-05-22 2014-05-22 A kind of hydraulic expanding cover Expired - Fee Related CN203962719U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420263861.4U CN203962719U (en) 2014-05-22 2014-05-22 A kind of hydraulic expanding cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420263861.4U CN203962719U (en) 2014-05-22 2014-05-22 A kind of hydraulic expanding cover

Publications (1)

Publication Number Publication Date
CN203962719U true CN203962719U (en) 2014-11-26

Family

ID=51923307

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420263861.4U Expired - Fee Related CN203962719U (en) 2014-05-22 2014-05-22 A kind of hydraulic expanding cover

Country Status (1)

Country Link
CN (1) CN203962719U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104033502A (en) * 2014-05-22 2014-09-10 高润 Hydraulic expansion sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104033502A (en) * 2014-05-22 2014-09-10 高润 Hydraulic expansion sleeve

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141126

Termination date: 20150522

EXPY Termination of patent right or utility model