CN2764562Y

CN2764562Y - Torsional moment control mechanism for sleeper nut tightening and untightening machine

Info

Publication number: CN2764562Y
Application number: CN 200520032918
Authority: CN
Inventors: 周大凱; 周静
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-19
Filing date: 2005-01-19
Publication date: 2006-03-15
Anticipated expiration: 2015-01-19

Abstract

The utility model relates to a torque controlling mechanism for a rail bearing nut loosening and tightening machine, which comprises a tooth-embedded type one-way safe clutch composed of an upper half clutch and a lower half clutch, wherein the lower half clutch is a driving half clutch emptily sheathed on a main shaft and the upper half clutch is a driven half clutch which drives the main shaft to rotate and can axially move on the main shaft. The upper end of the driven half clutch is pressed with a presetting spring of which the upper end is provided with a spiral adjusting mechanism finally pressing the presetting spring, the lower end of an adjusting member of the spiral adjusting mechanism is pressed with a force sensor which is supported by a pair of thrust bearings and the lower end surfaces of the thrust bearings finally press on the upper end surface of the presetting spring. The utility model can well adjust the amount of compression of the presetting spring once in any occasion; after a plurality of times of operation, the spiral adjusting mechanism can be observed whether to loose in a static state and the torque value of a rail bearing nut can be monitored in a dynamic state. The utility model reliably ensures the qualified pretightening force of each rail bearing nut and the consistency of all kinds of pretightening force.

Description

The moment of torsion controlling organization of sleeper nut degree of tightness machine

Art

The utility model relates to the degree of tightness machine of the sleeper nut of tightening and dismantling on the railway, specifically is the moment of torsion controlling organization in the sleeper nut degree of tightness machine.

Background technology

For the purpose of safety, sleeper nut on the railway (be equivalent to the railway spike on the original sleeper, promptly rail be fixed on nut on the reinforced concrete sleeper) needs periodically Check and Maintenance---and whether the pretightning force size of checking nut is consistent with each nut pretightning force; Maintenance is exactly to dismantle lower nut, is coated with antirust oil on the screw thread of bolt, again the pretightning force of their consistent sizes is in accordance with regulations tightened then.With torque wrench (also claiming torque spanner) manually during fastening nut, operating personnel can determine whether pretightning force has reached regulation from the torque value that this spanner shows.After reaching regulation, promptly stop to tighten operation.Yet, in the sleeper nut degree of tightness machine of high speed fastening nut, obviously be impossible in this way.Can only be with preestablishing torque value, reaching the way that stops fastening nut behind the setting automatically and could realize.The patent No. is the corresponding mechanism that this way of utilization is just arranged in 00244613.8 " sleeper nut degree of tightness machine ", is also referred to as " moment of torsion controlling organization " in this patent.It is by intermeshing upper and lower moment of torsion control sleeve＜10,11〉(for to distinguish mutually with the application's case, the Reference numeral of documents all is placed in the angle brackets), be pressed in moment of torsion and control sleeve＜10 moment of torsion control spring＜9 of upper surface and push down moment of torsion control spring＜9 adjustment nut＜8 etc. formation.Its following moment of torsion control sleeve＜11 initiatively〉sky is enclosed within splined shaft＜6〉on, driven last moment of torsion control sleeve＜10〉with splined shaft＜6 key is connected, splined shaft＜6〉the lower end key connecting directly turns work sleeve＜12 of nut, adjust nut＜8〉be screwed in splined shaft＜6 top and to lock nut pins by one fixed.Upper and lower moment of torsion control sleeve＜10,11 in this patent〉structurally be one pair of zigzag castellated unidirectional overload-release clutch fully, just being converted into the moment of torsion solenoidoperated cluthes has herein used (when using as overload-release clutch, the setting value of moment of torsion has been the safeguard protection effect, also is that the moment of torsion that clutch transmits under the normal condition is all little than setting value; When using as the moment of torsion solenoidoperated cluthes, the peak torque of clutch transmission all need reach setting value at every turn, reaches latter two half-clutch device of setting value and throws off).The said torque value that preestablishes is exactly by regulate adjusting nut＜8〉to moment of torsion control spring＜9 pre compressed magnitude realize.But owing to there is not display unit when regulating, the torque value of this degree of tightness machine can only be pre-set by following process ability: examination is earlier regulated, and fastening nut is lifted and operated machine with torque wrench or other device to test moments of torsion then; Examination is transferred again, and fastening nut is lifted the test moment of torsion of operating machine again once more ... until up to specification.Obviously, this not only at each new clothes machine or adjust the first time after repairing a machine very inconvenient; And because inconsistent to the size requirements of not co-orbital sleeper nut pretightning force, so, when on different tracks, using, adjust repeatedly again.Only be " adjustment " this part thing, just greatly influenced the application of this degree of tightness machine.Application number is that 2004200616227 " double end sleeper nut degree of tightness machine " is though more superior than aforementioned patent at other aspect of performances, and in its main shaft＜31〉sampling end＜33 that a torque sensor has been installed, front portion, display screen＜331 of torque sensor also be installed in go-cart frame＜4 vehicle frame handle＜40 on, but, the application of torque sensor is its price comparison costliness not only, and also must could finally adjust by the process of fastening nut when presetting at every turn.Therefore, back one patent application except that need not lift operate machine test the moment of torsion this point than last patent superior, how much superior all the other are also unlike last patent with the operation of adjusting, setting is relevant.

Summary of the invention

The purpose of this utility model is, sets up a kind of mechanism that can set its screw-down torque in advance easily in the moment of torsion controlling organization of sleeper nut degree of tightness machine, in all case can both once configure the torque value of fastening nut by this mechanism.

The moment of torsion controlling organization of realizing a kind of sleeper nut degree of tightness machine of described purpose comprises, the castellated unidirectional overload-release clutch of being made up of upper and lower half-clutch device.Its lower semi-clutch is enclosed within a half-clutch device of the active on the main shaft for empty, its first clutch for drive this main axis rotation and can be on this main shaft axially movable driven half-clutch device.The upper end of this driven half-clutch device is pressed with the preset spring, and there is the adjustable diameter and screw adjusting mechanism that finally pushes down it upper end of this preset spring.The lower end binding of this main shaft is connected to the ut socket that turns the sleeper nut.As said in the background technology, this overload-release clutch has used as the clutch of moment of torsion control in sleeper nut degree of tightness machine.Because those skilled in the art know the structure of castellated unidirectional overload-release clutch already, so this case is carried out the generality description with the language of " driven half-clutch device drives this main axis rotation and can move axially " to this part on this main shaft.Its improvements are: the lower end of the adjustment means (relatively-movable member in the adjustable diameter and screw adjusting mechanism just) of described adjustable diameter and screw adjusting mechanism is pressed with a power sensor, this power sensor is held by one pair of thrust bearing, and the lower surface of this thrust bearing finally is pressed on the upper surface of described preset spring.Obviously, the described power sensor force cell that is pressure type; When the operator sets torque value by the decrement of adjustment means adjustment preset spring, also this power sensor is exerted pressure simultaneously.This sensor just can be delivered in the display unit (because obvious, do not give unnecessary details about display unit, connection line and accompanying drawing thereof) recording signal in this case.

Below in conjunction with adjustment, assignment procedure, introduce superiority of the present utility model.

When setting a kind of torque value of first new clothes machine of model first, still the process with existing adjustment, setting is the same: examination is earlier regulated, and fastening nut is lifted the test moment of torsion of operating machine again then; Examination is transferred again, and fastening nut is lifted the test moment of torsion of operating machine again once more ... until up to specification.Then, when static state, advance to write down the shown numerical value of display unit.This numerical value is preset value, and it is little that this value obviously reaches setting (value when being throw-out-of clutch) than fastening nut, but strict corresponding relation is arranged between the two.Simultaneously, note fastening nut again and reach setting after, throw-out-of clutch shown numerical value of moment.Require different sleeper nuts for pretightning force, value corresponding is write down in operation like this respectively.After, in formal the use, just can be in all case, once configured preset value according to writing down; After multi-pass operation, both can be by static preset value, whether observe this adjustable diameter and screw adjusting mechanism has loosening; The numerical value that shows in the time of also can be by throw-out-of clutch monitors.Be not difficult to find out, the utility model on size that presets, guarantees sleeper nut pretightning force and uniformity more than existing superior and reliable.For each new clothes machine of same model,,, need not as prior art, repeatedly try repeatedly to transfer and to set by need so when setting, only need do a spot of fine setting because aforementioned first setting recording arranged.For maintenance or repairing back machine, only need to get final product by original record adjustment, setting.Another advantage of the present utility model is to have substituted expensive torque sensor with low-cost power sensor; Except that noticing that shown numerical value is (corresponding with moment of torsion) force value, in design, make, install, in uses all than the convenience of usefulness torque sensor.

Description of drawings

The structure chart of Fig. 1---a kind of concrete structure of the present utility model

Fig. 2---the partial enlarged drawing of the part relevant among Fig. 1 with preset

Fig. 3---the structural map of the driven half-clutch device among Fig. 1

Enlarged drawing (outline line of fenestra) is looked on the left side of Fig. 4---Fig. 3

The structure chart of the another kind of concrete structure of Fig. 5---the utility model

The structure chart of another concrete structure of Fig. 6---the utility model

The specific embodiment

The moment of torsion controlling organization of sleeper nut degree of tightness machine.It comprises the castellated unidirectional overload-release clutch of being made up of upper and lower half-clutch device.The lower semi-clutch of this clutch is enclosed within a half-clutch device 21 of the active on the main shaft 1 for sky, its first clutch for drive this main shaft 1 rotation and can be on this main shaft 1 axially movable driven half-clutch device 22, the upper end of this driven half-clutch device 22 is pressed with preset spring 3, and there is the adjustable diameter and screw adjusting mechanism that finally pushes down it upper end of this preset spring 3.The lower end binding of this main shaft 1 is connected to the ut socket 7 that turns the sleeper nut.Wherein: the lower end of the adjustment means of adjustable diameter and screw adjusting mechanism is pressed with a power sensor 5, and this power sensor is held by one pair of thrust bearing 4, and the lower surface of this thrust bearing 4 finally is pressed on the upper surface of preset spring 3.Our department is divided into the generality leader of following each embodiment, and the content identical with this part do not given unnecessary details in following each example.In view of the power sensor itself is to adopt to be suitable for existing sensor of the present utility model (for example, the dynamometry/LOAD CELLS of various pressure types), and feature of the present utility model is the combination of power sensor and original moment of torsion controlling organization.So the power sensor in each accompanying drawing is signal and draws, promptly only express its residing position and with the connecting each other of other members.

Embodiment 1 (with reference to figure 1,2):

A kind of moment of torsion controlling organization of sleeper nut degree of tightness machine (specializing of some part of this example on " leader " basis, identical with leader does not give unnecessary details).Power sensor 5 in this mechanism is a cylindricality, and the pressing plate 51 of pushing down this power sensor 5 is arranged at the top of this power sensor 5, and described adjustment means is the adjusting screw(rod) 6 coaxial with main shaft 1, and these screw rod 6 roof pressures are on this pressing plate 51.The sensor base 52 of directly holding it is arranged at the bottom of this power sensor 5, this sensor base 52 is held by thrust bearing 4, this thrust bearing 4 is installed in the top with the coaxial push rod 41 of this main shaft 1, the bottom of this push rod 41 is in the hole of inserting this main shaft 1 upper end in matched in clearance state ground, the lower end of this push rod 41 heads on a perpendicular lateral pin 311, strip-type hole 312 upper ends of the symmetry parallel with main shaft on this main shaft 1 are passed at the two ends of this lateral pin 311, and be pressed in sky and be enclosed within on the spring base 31 on this main shaft 1, the lower end of this spring base 31 is pressed in preset spring 3 upper surfaces.On the upper end cover 81 of a sensor shield 8, on the screw rod 6 of the upper end surface of this upper end cover 81, a locking nut 9 is arranged as one of adjustable diameter and screw adjusting mechanism assembly and screws this screw rod 6 couplings.The top of described push rod 41, thrust bearing 4, sensor base 52, power sensor 5 and pressing plate 51 are all in this sensor shield 8.

It more than is the structure division (sampling, transmission, computing, amplification and demonstration etc. about force value are public sensor technology, so do not give unnecessary details) that this example presets the force value corresponding with moment of torsion.Continue below to disclose the overload-release clutch components of getting in touch with it: described principal and subordinate moves half-clutch device (21,22) and transmit the contact-making surface of moment of torsion and the axis coplane of described main shaft 1 when fastening nut; Its driven half-clutch device 22 also sky is enclosed within on this main shaft 1, one extension set is arranged at the top of this driven half-clutch device 22, two fenestras 221 that are centrosymmetric are arranged (referring to Fig. 3 on this extension set, 4), respectively there is an edge cam curved surface two fenestras, 221 identical circumferential sides, with be fixed with the straight pin 11 that and its two ends vertical with this main shaft 1 put in fenestra 221 on the main shaft 1 of this cam curved surface upper end corresponding position, directly promote this straight pin 11 and drive this main shaft 1 rotation so that ut socket 7 fastening nuts be this to cam curved surface, the shape of this cam curved surface is to produce to impel the principal and subordinate to move half-clutch device (21,22) shape of the axial thrust load of Tuo Kaiing.This overload-release clutch assembly is installed in the casing.The end cap 10 of sensor as aforementioned guard shield 8 axle journal on a supporting spindle 1 is fixed on the case lid 12 of this casing.

Embodiment 2 (with reference to figure 5):

A kind of moment of torsion controlling organization of sleeper nut degree of tightness machine (this example also is the specializing of some part on " leader " basis, and identical with leader does not give unnecessary details).Power sensor 5 in this mechanism is for having the tubular or the band of column shape of central through hole, and these power sensor 5 skies are enclosed within on the main shaft 1; On this main shaft 1 below the power sensor 5, also be set with sensor base 52, the thrust bearing 4 of holding this sensor base 52 of directly holding this power sensor 5 and its lower surface of holding this thrust bearing 4 successively and be pressed in the spring base 31 of preset spring 3 upper surfaces; Be positioned on this main shaft 1 on these power sensor 5 tops and be set with the pressing plate 51 of pushing down this power sensor 5, described adjustment means be with the adjusting screw(rod) 6 of the coaxial hollow of entangling this main shaft 1 of this main shaft 1 with being matched in clearance ', this adjusting screw(rod) 6 ' be pressed on this pressing plate 51.As one of adjustable diameter and screw adjusting mechanism assembly and screw this adjusting screw(rod) 6 ' coupling a cantilever 8 ' on, the adjusting screw(rod) 6 of this cantilever 8 ' upper end surface ' on a locking nut 9 is arranged.Obviously, by this adjusting screw(rod) 6 ', the upper end of main shaft 1 also be bearing in simultaneously this cantilever 8 ' on.

It more than is the structure division (, still not giving unnecessary details) that this example presets the force value corresponding with moment of torsion about the sensor technology aspect.Continue to disclose the overload-release clutch components of getting in touch with it below: it is identical mutually inclined-plane or helicoid that described principal and subordinate move half-clutch device (21,22) transmits moment of torsion when fastening nut contact-making surface, and the incline direction on this inclined-plane or the rotation direction of helicoid are that generation impels the principal and subordinate to move the direction or the rotation direction of the axial thrust load of half-clutch device (21,22) disengagement; It is to realize by the feather key or the spline that connect their (22,1) that this driven half-clutch device 22 drives this main shaft 1 rotation.See that because the overload-release clutch assembly of this part especially more Gu Tuzhong does not analyse and observe and draws; " inclined-plane or helicoid ", " feather key or spline " are not more distinguished particularly yet.

Those skilled in the art it can also be seen that, except that locking nut 9 and corresponding adjusting screw(rod) 6 thereof ' one section, all the other members in this example all can be installed in the casing, just so-called enclosed type construction.In this case, described cantilever 8 ' just should change the upper end cover of this casing into.

Embodiment 3 (with reference to figure 6):

This example is identical with the major part of embodiment 2, and same section is not given unnecessary details.The part of difference is: described adjustment means be with this main shaft 1 on the adjusting nut 6 of one section screw thread coupling ", this adjusting nut 6 also is furnished with a locking nut 9 on " being pressed on the described pressing plate 51, at this adjusting nut 6 ".On this main shaft 1 more than thread segment axle journal is arranged, by being installed in the bearing on this axle journal, the upper end of main shaft 1 is by a cantilever 8 ' support.Obviously, different with embodiment 2, this routine structure can only be designed and manufactured into non-enclosed.

Be not difficult to find out that from the foregoing description the overload-release clutch components among embodiment 1 and the embodiment 2 (or embodiment 3) can exchange,, no longer give an example for the structure after exchanging for saving space.

It will be apparent to those skilled in that if the power sensor of institute's adapted itself in above-mentioned each example, its upper end just has (or being furnished with) pressing plate, then this pressing plate is exactly the pressing plate 51 of the utility model indication.

After having seen the difference of embodiment 2 and embodiment 3, those skilled in the art can easily release: the push rod 41 among the embodiment 1 can be enclosed within main shaft 1 top and substitutes with the coaxial gland of this main shaft 1 too by one.That is: thrust bearing 4 is held in the upper end of this gland, the bottom has the pilot hole that entangles main shaft 1 top, the annular end face of lower end to be pressed on the spring base 31 with being matched in clearance.Because the accommodation of the corresponding construction after this substitute those skilled in the art is especially accomplished easily, so, no longer be described in further detail.

Claims

1, the moment of torsion controlling organization of sleeper nut degree of tightness machine, it comprises the castellated unidirectional overload-release clutch of being made up of upper and lower half-clutch device; Its lower semi-clutch is that sky is enclosed within the half-clutch device of active (21) on the main shaft (1), its first clutch is for driving this main shaft (1) rotation and can going up axially movable driven half-clutch device (22) at this main shaft (1), the upper end of this driven half-clutch device (22) is pressed with preset spring (3), and there is the adjustable diameter and screw adjusting mechanism that finally pushes down it upper end of this preset spring (3); The lower end binding of this main shaft (1) is connected to the ut socket (7) that turns the sleeper nut; The lower end that it is characterized in that the adjustment means of described adjustable diameter and screw adjusting mechanism is pressed with a power sensor (5), and this power sensor is held by one pair of thrust bearing (4), and the lower surface of this thrust bearing (4) finally is pressed on the upper surface of described preset spring (3).

2, the moment of torsion controlling organization of sleeper nut degree of tightness machine according to claim 1, it is characterized in that described power sensor (5) is cylindricality, the pressing plate (51) of pushing down this power sensor (5) is arranged at the top of this power sensor (5), described adjustment means is the adjusting screw(rod) (6) coaxial with described main shaft (1), and this screw rod (6) roof pressure is on this pressing plate (51); The sensor base (52) of directly holding it is arranged at the bottom of this power sensor (5), this sensor base (52) is held by described thrust bearing (4), this thrust bearing (4) is installed in the top with the coaxial push rod (41) of this main shaft (1), the bottom of this push rod (41) is in the hole of inserting this main shaft (1) upper end in matched in clearance state ground, the lower end of this push rod (41) heads on a perpendicular lateral pin (311), strip-type hole (312) upper end of the symmetry parallel with main shaft on this main shaft (1) is passed at the two ends of this lateral pin (311), and be pressed in sky and be enclosed within on the spring base (31) on this main shaft (1), the lower end of this spring base (31) is pressed in described preset spring (3) upper surface.

3, the moment of torsion controlling organization of sleeper nut degree of tightness machine according to claim 1 is characterized in that described power sensor (5) for the tubular or the band of column shape of central through hole are arranged, and this power sensor (5) sky is enclosed within on the described main shaft (1); Its lower surface that also is set with the sensor base (52) of directly holding this power sensor (5), the described thrust bearing (4) of holding this sensor base (52) successively and holds this thrust bearing (4) on this main shaft (1) of this power sensor (5) below is pressed in the spring base (31) of described preset spring (3) upper surface; Be positioned on this main shaft (1) on this power sensor (5) top and be set with the pressing plate (51) of pushing down this power sensor (5), described adjustment means is pressed on this pressing plate (51), and this adjustment means is the adjusting screw(rod) (6 ') with the coaxial hollow of entangling this main shaft (1) of this main shaft (1) with being matched in clearance.

4, the moment of torsion controlling organization of sleeper nut degree of tightness machine according to claim 1 is characterized in that described power sensor (5) for the tubular or the band of column shape of central through hole are arranged, and this power sensor (5) sky is enclosed within on the described main shaft (1); Its lower surface that also is set with the sensor base (52) of directly holding this power sensor (5), the described thrust bearing (4) of holding this sensor base (52) successively and holds this thrust bearing (4) on this main shaft (1) of this power sensor (5) below is pressed in the spring base (31) of described preset spring (3) upper surface; Be positioned on this main shaft (1) on top of this power sensor (5) and be set with the pressing plate (51) of pushing down this power sensor (5), described adjustment means is pressed on this pressing plate, this adjustment means be with this main shaft (1) on adjusting nut (6 ") of one section screw thread coupling.

5, according to the moment of torsion controlling organization of claim 1,2,3 or 4 described sleeper nut degree of tightness machines, it is characterized in that it is inclined-plane or the helicoid that coincide mutually that described principal and subordinate moves half-clutch device (21,22) transmits moment of torsion when fastening nut contact-making surface, the incline direction on this inclined-plane or the rotation direction of helicoid are to produce direction or the rotation direction of impelling the principal and subordinate move the axial thrust load of half-clutch device (21,22) disengagement; It is to realize by the feather key or the spline that connect their (22,1) that this driven half-clutch device (22) drives this main shaft (1) rotation.

6,, it is characterized in that described principal and subordinate moves half-clutch device (21,22) and transmit the contact-making surface of moment of torsion and the axis coplane of described main shaft (1) when fastening nut according to the moment of torsion controlling organization of claim 1,2,3 or 4 described sleeper nut degree of tightness machines; Its driven half-clutch device (22) also sky is enclosed within on this main shaft (1), one extension set is arranged at the top of this driven half-clutch device (22), two fenestras (221) that are centrosymmetric are arranged on this extension set, respectively there is an edge cam curved surface the identical circumferential side of two fenestras (221), with be fixed with the straight pin (11) that and its two ends vertical with this main shaft (1) put in fenestra (221) on the main shaft (1) of this cam curved surface upper end corresponding position, directly promote this straight pin (11) and drive this main shaft (1) rotation so that ut socket (7) fastening nut be this to cam curved surface, the shape of this cam curved surface is to produce to impel the principal and subordinate to move half-clutch device (21,22) shape of the axial thrust load of Tuo Kaiing.