CN202032009U

CN202032009U - Novel expansion coupling sleeve

Info

Publication number: CN202032009U
Application number: CN2011200907453U
Authority: CN
Inventors: 叶笃孟
Original assignee: ZHEJIANG JINGJI ELECTROMECHANICAL CO Ltd
Current assignee: Fine base Technology Co Ltd
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2011-11-09
Anticipated expiration: 2021-03-31

Abstract

The utility model discloses a novel expansion coupling sleeve, which structurally comprises an intermediate, as well as a front lateral ring and a rear lateral ring sleeved on two sides of the intermediate, wherein the front lateral ring is directly installed with the rear lateral ring through a plurality of cylindrical head inner hexagon screws penetrating a through hole on the intermediate; the taper of the inner conical surface of the front lateral ring is 1:7; the taper of one side of the outer conical surface where the intermediate is matched with the front lateral ring is identical to that of the inner conical surface of the front lateral ring, namely, 1:7; the taper of the inner conical surface of the rear lateral ring is 1:6; and the taper of one side of the outer conical surface where the intermediate is matched with the rear lateral ring is identical to that of the inner conical surface of the rear lateral ring, namely, 1;6. The double-conical-surface structure provided by the utility model guarantees the centering precision of two to-be-coupled shafts, and the rated torque is greatly improved; the ratio of pressure on the shaft unit area and pressure on the hub unit area is relatively smaller, the performance of the to-be-coupled shafts is allowed to be lowered, and more economical shaft material can be selected, thereby lowering manufacturing and use cost of a user, and further bringing considerable economic benefits for the user.

Description

A kind of novel expansion coupling sleeve

Technical field

The utility model relates to expansion coupling sleeve, and specifically a kind of connection that is applicable to axle and parts on shaft is with the novel expansion coupling sleeve of transmitting torque, axial force or both combined stresses.

Background technique

Expansion coupling sleeve is called for short expansion set, and expansion set is linked with following several types: Z1, Z2, Z3, Z4, Z5, Z6, Z9, Z12 type expansion set.Expansion set is a pair of or several expansion sets to fitting with the inside and outside conical surface of packing between axle and hub bore, and under the effect of axial force, interior cover dwindles, and overcoat swells, and forms the interference combination, frictionally or axial force or the two compound action transmitting torque.Expansion set is used more and more widely as a kind of new propeller boss Placement, and simple in structure, easily manufactured, cost is lower, and reliable operation, is safeguarded all easylier at mounting or dismounting, and transmitting torque is bigger.Wherein Z1, Z2, Z3, Z4, the standardization of Z5 type expansion set, standard No. is GB5867-86.Z3, Z6, Z9, Z12 type expansion set are widely used in a kind of advanced basic components of mechanical connection under the heavy load, and the standard No. of expansion set is JB/T7934-1999.

The expansion set connection is connected with spline than interference fit, key to be compared, and mainly contain following characteristics: centering precision is good; Make and install simply, the axle of expansion set and the processing in hole are installed unlike interference fit, require high-precision manufacturing tolerances.Expansion set is installed is also need not heating, cooling or pressurized equipment, need only screw moment in accordance with regulations tighten and get final product, and easy to adjust, wheel hub can be adjusted to desired location easily on axle; Has good interchangeability, the dismounting of available standards instrument, convenient disassembly; Expansion set connects can bear heavy load, can be used for the steady occasion of transmission, and as acceleration and braking, an expansion set is not enough, can also a plurality of series connection use; It is by friction driving that expansion set connects, and does not have keyway to weaken to being coupled part, does not have relative movement, and expansion set is after tensioner, and the kinematic error of no clockwise and anticlockwise is applicable to accurate kinematic chain transmission; Expansion set connects insensitive to dirt; And the safety protection effect is arranged, and connection meetings such as keyway, pin damage axle and axle sleeve because of shearing stress, and expansion set produced relative slippage when expansion set was bound up on overload, can not damage connected piece, and mechanical part is shielded.

Z9 type expansion set is an expansion set commonly used in the heavy machinery standard, and being coupled the shaft diameter scope is φ 100-φ 420mm, and the rated torque scope of expansion set is 9.6-410KN.m.Z9 type expansion set is that single tapering face cooperates expansion set, and is simple in structure, also has above advantage simultaneously.The basic structure of Z9 type expansion set (auspicious see shown in Figure 2), left side ring by the band male cone (strobilus masculinus) is formed with right side ring and a plurality of socket cap screw (performance rate is 12.9 grades) of band internal taper hole, the internal conical surface of the outer conical surface of left side ring and right side ring for etc. the tapering face, attachment screw encircles unthreaded hole by the left side and connects two side rings.The shortcoming of Z9 type expansion set is the external diameter of the outside diameter of left side ring greater than the right side ring, and being installed on the interior back of hub bore expansion set has exposed parts, and the installing space size is big; The inner hole surface of left side ring does not contact with being coupled axial plane, causes not having the expanding force effect between left side loop section periphery and hub bore, so this kind structure and unreasonable; Z9 type expansion set is single cone match expansion set, and shortcoming is that the accuracy of alignment of the relative bipyramid face cooperation of accuracy of alignment is low.

The model utility content

The purpose of this utility model is the defective that exists at prior art, a kind of novel expansion coupling sleeve is provided, solved the external diameter of the outside diameter of the left side ring that prior art exists greater than the right side ring, be installed on that the back expansion set has exposed parts in the hub bore, the installing space size is big; The inner hole surface of left side ring does not contact with being coupled axial plane, causes not having the expanding force effect between left side loop section periphery and hub bore, causes accuracy of alignment low, the technical problem that nominal torque is little.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of novel expansion coupling sleeve, its structure comprises intermediate and is placed in the front side ring and the back side ring of intermediate both sides, described front side ring with a plurality of socket cap screws pass on the intermediate through hole directly and the back side ring be installed together.

Described front side ring inner conical surface is 1: 7 tapering, and the tapering of the side male cone (strobilus masculinus) that described intermediate matches with the front side ring is fit to the inner conical surface tapering of front side ring, promptly 1: 7 tapering; Described back side ring inner conical surface is 1: 6 tapering, and the tapering of the side male cone (strobilus masculinus) that described intermediate matches with the back side ring is fit to the inner conical surface tapering of back side ring, promptly 1: 6 tapering.

The nominal torque of described expansion coupling sleeve transmission is 14.7-973KN.m, and shaft hole diameter is φ 100-φ 460mm.

A kind of novel expansion coupling sleeve of the present utility model is compared with prior art, has following beneficial effect:

The inner conical surface of the utility model front side ring is 1: 7 tapering, the inner conical surface of back side ring is 1: 6 tapering, intermediate is that a side circumference is 1: 7 tapering face, the opposite side circumference is 1: 6 tapering face, side ring two conical surfaces respectively with the intermediate circumference on 1: 7 male cone (strobilus masculinus) and 1: 6 male cone (strobilus masculinus) of both sides cooperate the location, the front side is installed together with the direct and back side ring of through hole that a plurality of 12.9 grades of socket cap screws pass on the intermediate, 12.9 the level socket cap screw is under responsive to axial force, make and produce tensioner pressure between the inside and outside ring conical surface, axle and hub fit tightly and produce enough frictional force, with transmitting torque.Biconical surface structure can guarantee coupled diaxon accuracy of alignment when using, and can bear heavy load, can be used for the not steady occasion of transmission, as quickening and braking.The hole taper face cone degree of front and back two side rings is inequality, and the front side is slightly littler than rear side tapering, and this kind project organization is simple, reliable operation, and it is very convenient to dismantle.During dismounting, dismounting socket head screw in side ring top, front screws in uniform the withstanding on the side ring of back of tapped hole on the intermediate, pulls down the back side ring, screws in part in the side ring tapped hole of front and dismantles that socket head screw is uniform to withstand on the intermediate, the front side ring separates with intermediate, and it is very convenient to dismantle.Expansion set did not have exposed parts after the utility model expansion set was installed in the hub bore, and the installing space size is little.Pressure range is 92-118MPa on novel expansion set of this kind and the axle junction plane, with pressure range on the junction plane on the hub be 87-114MPa, on the axle on the unit area on pressure and the hub on the unit area pressure ratio relative less, the performance that is coupled axle can reduce, shaft material is selected less expensive for use, has reduced user's manufacturing user cost.

The utility model has plurality of specifications for selecting for use, and transferable nominal torque is 14.7-973KN.m, and nominal torque improves greatly than Z9 type expansion set nominal torque, and shaft hole diameter is φ 100-φ 460mm.

The utility model biconical surface structure can guarantee coupled diaxon accuracy of alignment when using.Nominal torque improves greatly than Z9 type expansion set nominal torque.The novel expansion set of this kind, on the axle on the unit area on pressure and the hub on the unit area pressure ratio relative less, the performance that is coupled axle can reduce, shaft material is selected less expensive for use.In sum, the utility model expansion set has reduced user's manufacturing user cost, can be the user and brings great economic benefit.

Description of drawings

Fig. 1 is a structure scheme of erection of the present utility model;

Fig. 2 is the structure scheme of erection of the heavy machinery standard expansion set Z9 basic model of prior art;

Structure diagram when Fig. 3 dismantles for the utility model;

Fig. 4 is the utility model assembling 3 dimensional drawing.

Among the figure: 1, socket head screw; 2, front side ring; 3, back side ring; 4, intermediate.

Embodiment

Next with reference to Figure of description to explaining below a kind of novel expansion coupling interplanting of the present utility model.

A kind of novel expansion coupling sleeve, see Fig. 1, its structure comprises intermediate 4 and is placed in the front side ring 2 and the back side ring 3 of intermediate both sides, described front side ring with a plurality of socket cap screws 1 pass on the intermediate through hole directly and the back side ring be installed together.The inner conical surface of front side ring 2 is 1: 7 tapering, the inner conical surface of back side ring 3 is 1: 6 tapering, intermediate 4 is to be 1: 7 tapering face on the circumference of front side, it on the rear side circumference 1: 6 tapering face, two side ring inner conical surfaces respectively with the intermediate circumference on 1: 7 male cone (strobilus masculinus) and 1: 6 male cone (strobilus masculinus) of both sides cooperate the location, play self-centering action.The a plurality of 12.9 grades of socket cap screws 1 of front side ring 2 usefulness are screwed in the screw on back side ring 3 circumference, the symmetry of intersecting about the use torque-indicating wrencg during installation is tightened socket cap screw 1 successively, guarantee to reach the rated moment value, produce tension between intermediate 4 and installation shaft, finishing propeller boss connects, realized the effect of transmitting torque, several 12.9 grades of socket cap screws 1 play the effect of tensioner expansion set.During dismounting, earlier whole socket cap screws 1 are loosened several circles, being screwed into 12.9 grades of socket cap hexagon socket head cap screws 1 across on the tapped hole in the through hole of the dismounting back side ring 3 of side ring 2 sides, on the intermediate 4 in front then directly withstands on the side entity of back side ring 3, push up loose back side ring 3, being screwed into 12.9 grades of socket cap hexagon socket head cap screws 1 more in front in the screw of the dismounting intermediate 4 on side ring 2 sides across directly withstands on 4 the entity of intermediate, push up loose intermediate 4, several 12.9 grades of socket cap screws 1 play the effect of dismounting expansion set.Bilateral symmetry center with intermediate is the center, and front side ring, back side ring are contained in both sides respectively, and the swelling screw-driving is formed a whole set of expansion set.

The above embodiment is a kind of of the more preferably concrete mode of execution of the utility model, and common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.

Claims

1. novel expansion coupling sleeve, it is characterized in that: its structure comprises intermediate and is placed in the front side ring and the back side ring of intermediate both sides, described front side ring with a plurality of socket cap screws pass on the intermediate through hole directly and the back side ring be installed together.

2. a kind of novel expansion coupling sleeve according to claim 1, it is characterized in that: described front side ring inner conical surface is 1: 7 tapering, the tapering of the side male cone (strobilus masculinus) that described intermediate matches with the front side ring is fit to the inner conical surface tapering of front side ring, promptly 1: 7 tapering; Described back side ring inner conical surface is 1: 6 tapering, and the tapering of the side male cone (strobilus masculinus) that described intermediate matches with the back side ring is fit to the inner conical surface tapering of back side ring, promptly 1: 6 tapering.

3. a kind of novel expansion coupling sleeve according to claim 1 is characterized in that: the nominal torque of described expansion coupling sleeve transmission is 14.7-973KN.m, and shaft hole diameter is φ 100-460mm.