CN207195616U - A kind of worm type of reduction gearing - Google Patents

Abstract

The utility model provides a kind of worm type of reduction gearing, belongs to field of mechanical technique.It solves the problem of existing worm type of reduction gearing degree of regulation is poor, and worm gear is easy to wear.This worm type of reduction gearing, including the housing with axis hole, the worm gear being arranged in housing, slide the worm screw, adjusting set and the clamping screw that are located in axis hole, regulation be set on housing close to the end of worm screw output end and with the output end axial restraint of worm screw, slide and be located in axis hole in adjusting set one end, there is the annular convex edge of protrusion on the periphery wall of the other end, the threaded shank of clamping screw is threadedly coupled through annular convex edge with housing, and the head of clamping screw is pressed in annular convex edge.The design that this decelerator passes through adjusting set so that the big minor adjustment of spacing of regulation is electrodeless, locks the effect of bolt, thread pitch can almost be ignored so that worm and gear is in tight engagement all the time, is not in gap, degree of regulation is high, reduces the abrasion of worm gear.

Description

A kind of worm type of reduction gearing

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of decelerator, particularly a kind of worm type of reduction gearing.

Background technology

Decelerator is that a kind of gear drive, worm-drive, pinion-endless screw transmission by being enclosed in stiff case is formed Individual components, the speed reduction gearing being commonly used between driving link and working machine, its main function be reduce rotating speed, increase turn Square.The species of decelerator is various, can be divided into gear reduction unit, worm type of reduction gearing and planetary gear speed-reduction according to actuation types Device.

Worm gear gyration aperture is bigger in existing worm type of reduction gearing, and gap conference causes the inaccuracy of dividing movement Property, vibrations and noise can be caused by having when intermittent load and frequent rotating, aggravate the abrasion of worm gear.

For above-mentioned problem, the applicant, which is made that, improves and has applied patent, (application number： 201320246627.6) disclose a kind of high-precision worm type of reduction gearing, including housing, be arranged on the snail being meshed in housing Bar and worm gear, enclosure interior are provided with one and are set on worm screw and can be relative to adjustment spiral shell of the housing along the axial movement of worm screw Mother, the input of institute worm screw are supported in adjusting nut by bearing assembly, and the output end of worm screw is by can be along worm screw axial direction For mobile ball bearings in housing, the transverse tooth thickness of worm screw is thickening successively by output end to input.It uses adjusting nut Worm screw movement is driven, so that being connected between worm and wheel by the minimum grinding tooth in gap, between elimination worm and gear Gap.But above-mentioned turbine and worm decelerator still suffers from following defect：Although above-mentioned decelerator is by by the transverse tooth thickness of worm screw It is arranged to thickening successively by output end to input, and is connected to by the adjusting nut of input end in housing, passes through adjustment The screw thread of nut and housing coordinates to adjust position of the adjusting nut in housing, so as to drive worm screw movement to eliminate worm and gear Gap, but because adjusting nut is provided in input end, also to connect shaft coupling and motor on input, hold during adjustment Easily interfere, operation is more inconvenient.Simultaneously as the screw thread of adjusting nut and housing coordinates, that is to say, that regulation can only root Realized according to the spacing size of screw thread, the distance of adjusting nut movement, that is, the spacing size adjusted is that have a range of, regulation Low precision, and certain gap inherently be present in the screw thread of adjusting nut, and the rotation that this gap passes through adjusting nut is Eliminating what is do not fallen, either radially or on axial direction trickle skew can be also produced in the interstice coverage, stability is poor, So as to related cause between worm and gear or can have certain gap, easily cause after run time is long vibrations and Noise, aggravate the abrasion of worm gear.

The content of the invention

The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of worm and gear slows down Device, technical problem to be solved in the utility model are：The gap between worm and gear how is preferably eliminated, reduces worm gear Abrasion.

The purpose of this utility model can be realized by following technical proposal：A kind of worm type of reduction gearing, including with The housing of axis hole, the worm gear being arranged in housing and slip are located in the worm screw in axis hole, it is characterised in that this decelerator also wraps Include adjusting set and clamping screw, the regulation be set on housing close to the end of worm screw output end and with the output end of worm screw Axial restraint, described adjusting set one end are slided and are located in the axis hole, have the convex annular of protrusion on the periphery wall of the other end Edge, the threaded shank of the clamping screw is threadedly coupled through annular convex edge with housing, and the head of the clamping screw is pressed on In annular convex edge.

The transverse tooth thickness of the worm screw of this worm type of reduction gearing is thickening successively along input to output end, while the input of worm screw Circumferentially rotate and be connected in axis hole and can axially be slided along axis hole, output end is connected in adjusting set, during installation and adjustment, is promoted Adjusting set is toward sliding in axis hole and drive worm screw to move so that it is connected between worm and wheel by the minimum grinding tooth in gap, Then clamping screw is tightened, compress limit convex by the head of clamping screw fixes along by adjusting set and housing.Due to adjusting set It is to slide to be located in the axis hole of housing, adjusting set can move the distance of arbitrary size, that is, the spacing adjusted in axis hole Big minor adjustment is electrodeless, it is possible to achieve the regulation of arbitrary size spacing, and have on the other end periphery wall of adjusting set convex The annular gear edge gone out, the fixation of adjusting sleeve is to tighten to realize so as to compress annular convex edge inside with strength by clamping screw, And clamping screw is a more small-sized part in itself, size is smaller for existing adjusting nut, existing for itself Thread pitch compare with also very little for the existing thread pitch on existing adjusting nut, can almost ignore, therefore energy Be not in gap, degree of regulation is high, reduces the abrasion of worm gear enough so that worm and gear is in tight engagement all the time. Moreover, adjusting set is to slide to be located in end of the housing close to worm screw output end, and therefore, even if there is trickle loosening, It can timely be adjusted by continuing to tighten clamping screw, with miscellaneous part will not be interfered during regulation at any time, be grasped Make more convenient.

In above-mentioned worm type of reduction gearing, it is heavy that the housing offers regulation on the end face of worm screw output end Hole, described axis hole one end have gap, institute between the bottom of regulation counterbore, the annular convex edge and the bottom surface for adjusting counterbore State clamp nut to be set in outside the annular convex edge and be threadedly coupled with annular convex edge, described clamp nut one end is slided and is located in It can be pushed against on the bottom surface of regulation counterbore in the regulation counterbore and by sliding.Because adjusting set is to slide to be located in housing Axis hole in, on the other end periphery wall of adjusting set have protrusion annular gear edge, annular convex edge with regulation counterbore bottom surface Between there is gap, adjusting set can move the distance of arbitrary size in axis hole, that is, the big minor adjustment of spacing adjusted is electrodeless , it is possible to achieve the regulation of arbitrary size spacing, and the fixation of adjusting sleeve is by the compression of clamping screw and with combined pressure Tight nut coordinates to realize, that is to say, that after clamping screw compresses adjusting set, clamp nut is also to be pushed against regulation counterbore Bottom surface on, clamp nut also has a reverse supporting force to adjusting set, passes through clamping screw and clamp nut Interaction force, it is to be in abutting state to coordinate its respective screw thread, eliminates clamping screw and clamp nut in itself Thread pitch influences, and stability is good, so that worm and gear is in tight engagement all the time, be not in gap, regulation Precision is high, reduces the abrasion of worm gear.Simultaneously as have gap between annular convex edge and the bottom wall of counterbore, clamp nut with The gap can be surrounded to form a cavity body structure closed against after realizing locking by adjusting the bottom surface of counterbore, so that whole The stability of body is preferable, is further able to ensure that worm and gear is in tight engagement all the time, preferably eliminates gap, drop The low abrasion of turbine.Moreover, the cavity body structure of the closing can also play a part of a sealed chamber to a certain extent, increase The sealing effectiveness of each junction is added.

In above-mentioned worm type of reduction gearing, one end end face that the clamp nut is located in regulation counterbore is flat Face, the bottom surface of the regulation counterbore is plane.The penetrating end end face of clamp nut is designed as plane, and the bottom surface for adjusting counterbore is also set Be calculated as plane, two planes abut that stability is good, will not offset and rock, so as to have to regulation tackling one it is stable anti- To support force, the gap of clamping screw screw thread itself is eliminated, stability is good, closely matches somebody with somebody so that worm and gear is in all the time Conjunction state, be not in gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, the outer peripheral face of the clamp nut is smooth surface, the regulation counterbore Madial wall be smooth surface, the outer peripheral face of the clamp nut is abutted on the madial wall of the regulation counterbore.Clamp nut Outer peripheral face and the madial wall of regulation counterbore be both designed as smooth surface, clamp nut penetrates regulation counterbore and is pushed against regulation counterbore Bottom surface on after, the outer peripheral face of clamp nut is abutted on the madial wall of regulation counterbore, and stability is good, diametrically will not also produce Raw skew is rocked so that adjusting set is either all preferable in axial direction or radial direction upward stability after fixing, so that worm gear snail Bar is in tight engagement all the time, is not in gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, the outer peripheral face of the adjusting set is smooth surface, the inner side of the axis hole Wall is smooth surface, and the adjusting set slip is located in the axis hole and outer peripheral face is abutted on the madial wall of axis hole.Regulation The outer peripheral face of set and the madial wall of axis hole are both designed as smooth surface, and the outer peripheral face of adjusting set is abutted on the madial wall of axis hole, Stability is good, further ensures adjusting set and will not diametrically produce skew and rock, so that worm and gear is in all the time Tight engagement, be not in gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, several through holes, institute are circumferentially uniformly offered in the annular convex edge State and offer several and the one-to-one screwed hole of above-mentioned through hole on the bottom surface of regulation counterbore, the number of the clamping screw with Screwed hole is identical, and the threaded shank of the clamping screw is connected in corresponding screwed hole through through hole whorl, the locking screw The head of bolt is resisted against in the annular convex edge.It is uniformly distributed by several clamping screws and compresses annular convex edge so that ring Stress is more uniform everywhere for shape convex edge, will not be glanced off because local pressure is larger, and adjusting set fixation rear stability is good, so that Obtain worm and gear and be in tight engagement all the time, be not in gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, several spacing holes are further opened with the annular convex edge, it is described spacing The aperture in hole is more than the aperture of through hole, and the spacing hole corresponds with above-mentioned through hole and above-mentioned through hole is opened in corresponding spacing hole Bottom, the clamping screw head insertion spacing hole in and be resisted against on the bottom wall of spacing hole, the head of the clamping screw In portion with spacing hole bottom wall against end face be plane, the bottom wall of the spacing hole is plane.The design of spacing hole so that locking The head of bolt can be embedded in, and will not protrude the end face of annular convex edge, and the bottom wall of the head of clamping screw and spacing hole it Between for plane coordinate against stability is more preferable, so that worm and gear is in tight engagement all the time, between being not in Gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, the clamp nut has on one end periphery wall outside regulation counterbore The annular gear edge of protrusion, what the annular gear was available for instrument to insert along above offering puts forth effort hole, and the external diameter on the annular gear edge is big There is gap along between one end end face that regulation counterbore is offered with housing in the internal diameter of regulation counterbore and the annular gear.Put forth effort The design in hole, it is easy to instrument insertion to put forth effort, convenient operation, will by setting annular gear edge on the outer end pleat of clamp nut Put forth effort hole and be opened in annular convex edge that enough strength demands can be ensured.And between having between annular convex edge and the end face of housing Gap, ensure that the bottom surface of clamp nut even if be able to can be also pushed against on the bottom wall of regulation counterbore after there is abrasion, remains Preferable stability, so that worm and gear is in tight engagement all the time, be not in gap, degree of regulation is high, drop The low abrasion of worm gear.

In above-mentioned worm type of reduction gearing, cushion is additionally provided between the head of the clamping screw and annular convex edge Piece.Because adjusting set is to slide to be located in the axis hole of housing, there is the annular of protrusion on the other end periphery wall of adjusting set Keep off edge, there is gap between annular convex edge and the bottom surface for adjusting counterbore, adjusting set can be moved in axis hole arbitrary size away from From the big minor adjustment of spacing adjusted is electrodeless, it is possible to achieve the regulation of arbitrary size spacing, and in the head of clamping screw It is provided with elastomeric pad between portion and annular convex edge, after the head of clamping screw is pressed in annular convex edge, elastomeric pad is to locking The head of bolt has an outside elastic variable force, and eliminating the thread pitch of clamping screw in itself influences, and stability is good, from And make it that worm and gear is in tight engagement all the time, be not in gap, degree of regulation is high, reduces the abrasion of worm gear.

In above-mentioned worm type of reduction gearing, the adjusting set is cylindrical in shape and both ends open, the opening of the adjusting set Place is additionally provided with closure one, and for the lateral wall tight abutment of the closure one on the madial wall of adjusting set, the axis hole is close Be provided with closure two at one end port of worm screw input, the closure two in a ring, the outer ring side wall of the closure two For tight abutment on the madial wall of axis hole, inner ring has sealing lip, and the worm screw is supported through the inner ring and sealing lip of closure two Lean against on worm screw.The design of closure one and closure two, sealing of the axis hole in input and output end can be ensured, prevent sky Impurity in gas etc. enters in axis hole, and worm and gear is caused to corrode.

In above-mentioned worm type of reduction gearing, the mounting groove of annular, institute are further opened with the lateral wall of the sealing lip State and clip is arranged with mounting groove, sealing lip clamping is resisted against on worm screw by the clip.Pass through the effect of clip so that sealing Lip all the time can be tightly be resisted against on worm screw, good sealing effect.

In above-mentioned worm type of reduction gearing, it is further opened with one end lateral wall that the adjusting set is located in axis hole Annular seal groove, the annular seal groove is interior to be provided with sealing ring, and the sealing ring is resisted against on the madial wall of axis hole.Sealing ring Set, can further increase the sealing between output adjusting set and axis hole madial wall, prevent the impurity etc. in air Into in axis hole, worm and gear is caused to corrode.

Compared with prior art, this worm type of reduction gearing has advantages below：

1st, adjusting set can move the distance of arbitrary size in axis hole, that is, the big minor adjustment of spacing adjusted be it is electrodeless, The regulation of arbitrary size spacing can be realized, and the fixation of adjusting sleeve is to compress spiral shell by the compression and cooperation of clamping screw Female cooperation is come what is realized, and by clamping screw and the interaction force of clamp nut, it is place to coordinate its respective screw thread In the state of abutting, eliminating the thread pitch of clamping screw and clamp nut in itself influences, and stability is good, so that worm gear snail Bar is in tight engagement all the time, is not in gap, degree of regulation is high, reduces the abrasion of worm gear.

2nd, there is gap, the bottom surface of clamp nut and regulation counterbore is locked against realization between annular convex edge and the bottom wall of counterbore It is next that the gap can be surrounded to the cavity body structure to form a closing, so that overall stability is preferable, it is further able to Enough ensure that worm and gear is in tight engagement all the time, preferably eliminates gap, reduces the abrasion of turbine.Meanwhile should The cavity body structure of closing can also play a part of a sealed chamber to a certain extent, add the sealing effect of a junction Fruit.

3rd, the end face of clamp nut and adjust counterbore bottom surface between for plane abutment coordinate, the outer peripheral face of clamp nut with Adjust for smooth surface to coordinate between the madial wall of counterbore and recline so that adjusting set fix after either axially still radially Stability is all preferable, will not glance off and rock, so that worm and gear is in tight engagement all the time, between being not in Gap, degree of regulation is high, reduces the abrasion of worm gear.

4th, several clamping screws, which are uniformly distributed, compresses annular convex edge so that and stress is more uniform everywhere for annular convex edge, It will not be glanced off because local pressure is larger, adjusting set fixation rear stability is good, so that worm and gear is all the time in close Mated condition, be not in gap, degree of regulation is high, reduces the abrasion of worm gear.

5th, the setting of closure one, closure two and sealing ring so that the sealing that axis hole two-port goes out is preferable, and impurity is not Easily enter, worm and gear is caused to corrode.

Brief description of the drawings

Fig. 1 is the three-dimensional structure diagram of this worm type of reduction gearing.

Fig. 2 is that this worm type of reduction gearing saves the structure chart after adjusting set and clamp nut.

Fig. 3 is the side view of this worm type of reduction gearing.

Fig. 4 is the sectional view in A-A directions in Fig. 3.

Fig. 5 is the enlarged drawing at B in Fig. 4.

Fig. 6 is the enlarged drawing at C in Fig. 4.

In figure, 1, housing；1a, axis hole；1b, screwed hole；1c, regulation counterbore；2nd, worm gear；3rd, worm screw；3a, input；3b、 Output end；4th, adjusting set；4a, annular convex edge；4b, through hole；4c, spacing hole；5th, clamping screw；6th, clamp nut；6a, annular gear Edge；6a1, put forth effort hole；7th, closure one；8th, closure two；8a, sealing lip；9th, clip；10th, sealing ring；11st, ball bearing； 12nd, taper roll bearing one；13rd, taper roll bearing two；14th, locking nut.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

Embodiment one

As Figure 1-4, this worm type of reduction gearing, including housing 1, worm gear 2, worm screw 3, adjusting set 4, clamping screw 5 With clamp nut 6.Worm gear 2 is arranged in housing 1 by the axle of worm gear 2, and the transverse tooth thickness of worm screw 3 becomes successively along input to output end Thickness, worm screw 3 are located in axis hole 1a and are meshed with worm gear 2.

As shown in figs. 4 and 6, the axis hole 1a through the both ends of the surface of housing 1 is offered in housing 1, the input of worm screw 3 passes through rolling Pearl bearing 11 is connected in axis hole 1a, the inner ring and fixation of the input of worm screw 3 through ball bearing 11, ball bearing 11 it is outer Circle is abutted on axis hole 1a inwall and can slided along axis hole 1a.Axis hole 1a is provided with one end port of the input of worm screw 3 Closure 28, in a ring, the outer ring side wall of closure 28 has the annular abutment flange to be formed that bends inwards to closure 28, For annular abutment flange tight abutment on axis hole 1a madial wall, inner ring has sealing lip 8a, is gone back on sealing lip 8a lateral wall The mounting groove of annular is offered, is arranged with clip 9 in mounting groove, sealing lip 8a clampings are resisted against on worm screw 3 by clip 9.

As shown in Figures 4 and 5, taper roll bearing 1 and taper roll bearing 2 13, adjusting set 4 are provided with adjusting set 4 Madial wall on there is the annular abutment platform of protrusion, taper roll bearing 1 and taper roll bearing 2 13 are respectively positioned at annular Against the both sides of platform.The output end of worm screw 3 passes through the inner ring of taper roll bearing 1 and taper roll bearing 2 13, worm screw 3 Output end on there is axle journal, taper roll bearing 2 13 is fixedly clamped between axle journal and annular abutment platform, the output of worm screw 3 Also be threaded with locking nut 14 on end, taper roll bearing 1 be locked in locking nut 14 and annular abutment platform it Between.Loop buffer pad is additionally provided between taper roll bearing 1 and taper roll bearing 2 13, loop buffer cushion cover is located at snail On bar 3 and both ends of the surface respectively positioned at taper roll bearing 1 and taper roll bearing 2 13 inner ring against.

Regulation counterbore 1c is offered on the end face of housing 1, regulation counterbore 1c aperture is more than axis hole 1a aperture, axis hole 1a One end is through the middle part of regulation counterbore 1c bottom surface.The one end of adjusting set 4 is slided and is located in axis hole 1a, the outer peripheral face of adjusting set 4 For smooth surface, axis hole 1a madial wall is smooth surface, and the outer peripheral face of adjusting set 4 is abutted on axis hole 1a madial wall, surely It is qualitative good, it will not diametrically produce skew and rock.Ring is further opened with one end lateral wall that adjusting set 4 is located in axis hole 1a Shape seal groove, annular seal groove is interior to be provided with sealing ring 10, and sealing ring 10 is resisted against on axis hole 1a madial wall.

As shown in figure 5, having the annular convex edge 4a of protrusion on the periphery wall of the other end of adjusting set 4, annular convex edge 4a is with adjusting There is gap between section counterbore 1c bottom surface.Several through holes 4b is circumferentially uniformly offered on annular convex edge 4a, adjusts counterbore Several and the one-to-one screwed hole 1b of through hole 4b, number and the screwed hole 1b phases of clamping screw 5 are offered on 1c bottom surface Together, and clamping screw 5 screw rod through through hole 4b be threaded in corresponding in screwed hole 1b.It is further opened with annular convex edge 4a Several spacing holes 4c, spacing hole 4c aperture are more than through hole 4b aperture, and spacing hole 4c and through hole 4b is corresponded and through hole 4b is opened in corresponding spacing hole 4c bottom, and the head insertion spacing hole 4c of clamping screw 5 is interior and is resisted against spacing hole 4c bottom On wall, on the head of clamping screw 5 with spacing hole 4c bottom walls against end face be plane, spacing hole 4c bottom wall is plane.

The opening of adjusting set 4 is additionally provided with closure 1, and the lateral wall of closure 1 has the close of fold inward formation Flange is sealed, sealing flange tight abutment is on the madial wall of adjusting set 4.

Clamp nut 6 is set in outside annular convex edge 4a and is threadedly coupled with annular convex edge 4a, and the one end of clamp nut 6 is slided and worn It is located in regulation counterbore 1c and can be pushed against on regulation counterbore 1c bottom surface by sliding.It is heavy that clamp nut 6 is located in regulation One end end face in the 1c of hole is plane, and regulation counterbore 1c bottom surface is plane, and the outer peripheral face of clamp nut 6 is smooth surface, is adjusted Section counterbore 1c madial wall is smooth surface, and the outer peripheral face of clamp nut 6 is abutted on regulation counterbore 1c madial wall, radially Rocked with axially upper all without producing skew so that adjusting set 4 fix after either axially still radial direction upward stability all compared with It is good.There is the annular gear of protrusion along 6a on the other end periphery wall of clamp nut 6, annular gear offers along 6a is available for instrument to insert Put forth effort hole 6a1, external diameter of the annular gear along 6a is more than regulation counterbore 1c internal diameter and annular gear offers regulation along 6a and housing 1 There is gap between counterbore 1c one end end face.

During installation and adjustment, promoting adjusting set 4, adjusting set 4 can be in axis hole toward sliding in axis hole 1a and driving worm screw 3 to move The distance of mobile arbitrary size in 1a, that is, the big minor adjustment of spacing adjusted is electrodeless, it is possible to achieve the tune of arbitrary size spacing Section so that be connected between worm screw 3 and worm gear 2 by the minimum grinding tooth in gap, then tighten clamping screw 5, clamping screw 5 will Adjusting set 4 is to compressing on housing 1, and now clamp nut 6 is also pushed against regulation counterbore 1c's toward mobile in regulation counterbore 1c therewith Bottom surface, clamp nut 6 have a reverse support force to adjusting set 4 during abutting, make adjusting set 4 have one to The trend that housing 1 is extrapolated, so as to push away the effect with two power of a pressure by one, make the respective of clamping screw 5 and clamp nut 6 It is to be in abutting state that screw thread, which coordinates, eliminates the thread pitch of clamping screw 5 and clamp nut 6 itself and influences, stability It is good, so that the worm screw 3 of worm gear 2 is in tight engagement all the time, be not in gap, degree of regulation is high, reduces worm gear 2 Abrasion.Simultaneously as there is gap between annular convex edge 4a and the bottom wall of counterbore, the bottom of clamp nut 6 and regulation counterbore 1c Face against realize lock after the gap can be surrounded to form the cavity body structure of a closing so that overall stability compared with It is good.

Embodiment two

The architectural feature of the present embodiment and embodiment one are essentially identical, and its difference is：The head of clamping screw 5 with It is additionally provided with elastomeric pad between annular convex edge 4a, after the head of clamping screw 5 is pressed on annular convex edge 4a, elastomeric pad is to lock The head of tight bolt 5 has an outside elastic variable force, eliminates the thread pitch of clamping screw 5 itself and influences, stability It is good, so that worm gear 2 and worm screw 3 are in tight engagement all the time, be not in gap, degree of regulation is high, reduces snail The abrasion of wheel 2.

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (10)

1. a kind of worm type of reduction gearing, including the housing (1) with axis hole (1a), the worm gear (2) that is arranged in housing (1) and Slip is located in the worm screw (3) in axis hole (1a), it is characterised in that this decelerator also includes adjusting set (4) and clamping screw (5), the adjusting set (4) be arranged on housing (1) close to worm screw (3) output end (3b) end and with the output of worm screw (3) (3b) axial restraint is held, described adjusting set (4) one end, which is slided, to be located in the axis hole (1a), is had on the periphery wall of the other end The annular convex edge (4a) of protrusion, the threaded shank of the clamping screw (5) are threadedly coupled through annular convex edge (4a) with housing (1), And the head of the clamping screw (5) is pressed in annular convex edge (4a).

2. worm type of reduction gearing according to claim 1, it is characterised in that the housing (1) exports close to worm screw (3) Hold and regulation counterbore (1c) is offered on the end face of (3b), described axis hole (1a) one end is described through the bottom of regulation counterbore (1c) There is gap between the bottom surface of annular convex edge (4a) and regulation counterbore (1c), the clamp nut (6) is set in the convex annular Be threadedly coupled outside and with annular convex edge (4a) along (4a), clamp nut (6) one end slip is located in the regulation counterbore It can be pushed against on the bottom surface of regulation counterbore (1c) in (1c) and by sliding.

3. worm type of reduction gearing according to claim 2, it is characterised in that the clamp nut (6) is located in regulation One end end face in counterbore (1c) is plane, and the bottom surface of the regulation counterbore (1c) is plane.

4. worm type of reduction gearing according to claim 2, it is characterised in that the outer peripheral face of the clamp nut (6) is Smooth surface, the madial wall of the regulation counterbore (1c) be smooth surface, described in the outer peripheral face of the clamp nut (6) abuts in On the madial wall for adjusting counterbore (1c).

5. the worm type of reduction gearing described in any one in claim 1-4, it is characterised in that the adjusting set (4) outer peripheral face is smooth surface, and the madial wall of the axis hole (1a) is smooth surface, and the adjusting set (4) is slided and is located in In the axis hole (1a) and outer peripheral face is abutted on axis hole (1a) madial wall.

6. the worm type of reduction gearing described in any one in claim 1-4, it is characterised in that the annular convex edge Circumferentially uniformly offer several through holes (4b) on (4a), offered on the bottom surface of the regulation counterbore (1c) several with it is upper The one-to-one screwed hole (1b) of through hole (4b) is stated, the number of the clamping screw (5) is identical with screwed hole (1b), and the lock The screw rod of tight bolt (5) is threaded in corresponding screwed hole (1b) through through hole (4b), the head of the clamping screw (5) It is resisted against in the annular convex edge (4a).

7. worm type of reduction gearing according to claim 6, it is characterised in that be further opened with the annular convex edge (4a) Several spacing holes (4c), the aperture of the spacing hole (4c) are more than the aperture of through hole (4b), the spacing hole (4c) with it is above-mentioned Through hole (4b) corresponds and above-mentioned through hole (4b) is opened in the bottom for corresponding to spacing hole (4c), the head of the clamping screw (5) In portion's insertion spacing hole (4c) and be resisted against on spacing hole (4c) bottom wall, on the head of the clamping screw (5) with spacing hole (4c) bottom wall against end face be plane, the bottom wall of the spacing hole (4c) is plane.

8. according to the worm type of reduction gearing described in Claims 2 or 3 or 4, it is characterised in that the clamp nut (6) is located at Adjusting has protrusion annular on one end periphery wall of counterbore (1c) outside is kept off along (6a), and the annular gear offers along (6a) can Put forth effort hole (6a1) for instrument insertion, external diameter of the annular gear along (6a) is more than the internal diameter of regulation counterbore (1c) and the ring Shape gear has gap between offering one end end face of regulation counterbore (1c) along (6a) and housing (1).

9. worm type of reduction gearing according to claim 1, it is characterised in that the head of the clamping screw (5) and ring Elastomeric pad is additionally provided between shape convex edge (4a).

10. the worm type of reduction gearing described in any one in claim 1-4, it is characterised in that the adjusting set (4) it is cylindrical in shape and both ends open, the opening of the adjusting set (4) is additionally provided with closure one (7), the closure one (7) Lateral wall tight abutment is on the madial wall of adjusting set (4), and the axis hole (1a) is close to one end end of worm screw (3) input (3a) Closure two (8) is provided with mouthful, in a ring, the outer ring side wall tight abutment of the closure two (8) exists the closure two (8) On the madial wall of axis hole (1a), inner ring has sealing lip (8a), inner ring and sealing of the worm screw (3) through closure two (8) Lip (8a) is resisted against on worm screw (3).