CN205483592U - Braking appearance is decided mechanical type accuse quick -mounting of rotational speed calibration and is put - Google Patents

Abstract

The utility model discloses a braking appearance is decided mechanical type accuse quick -mounting of rotational speed calibration and is put aims at overcoming the unable automatically regulated's of the limitation, rotational speed unstability and the rotational speed that have speed range at present problem, it includes under bracing part, rotates rotating part on the subtotal down, the under bracing part is including 4 sets of supporting leg mechanisms, a column base plate, vertical pillar, abacus and 2 collateral branch faggings, the rotating part includes motor fixed plate, pivot and a bearing group down, and the pivot is installed on the motor fixed plate, the four corners department at a column base plate is installed with a column base plate and an abacus welded connection, 4 cover supporting leg mechanism in proper order in vertical pillar's bottom and top, and the left and right end department at an abacus is fixed perpendicularily to 2 collateral branch faggings, lower rotating part passes through the motor fixed plate and fixes the top at 2 collateral branch faggings, go up the rotating part through no. Two axle sleeves, no. Two bearing groups and no. Three axle sleeve suits in the pivot, the bottom face of no. Two axle sleeves contacts with the top facial features of a bearing group middle (center) bearing.

Description

Brake instrument determines the mechanical type speed-controlling device of rotating speed calibration

Technical field

This utility model relates to a kind of automotive inspection equipment for auto industry field, more specifically, originally Utility model relates to the mechanical type speed-controlling device of a kind of brake performance tester constant speed calibration link.

Background technology

Along with the fast development of China's automobile industry, the generation of vehicle accident is more frequent, one of them Chief reason is exactly to be affected by automobile brake perfrmance, and the quality of automobile brake perfrmance directly influences vehicle Driving safety, and the most qualified brake performance tester just can accurately detect the braking ability of vehicle, So the calibration to brake performance tester is only of paramount importance, and brake performance tester is in constant speed condition Under to carry out calibrating also be a kind of critically important calibration steps, current speed-controlling device has electronics rate controlling and machinery rate controlling Two kinds, electronics speed-controlling device easily produces cumulative errors, highly unstable, it is often necessary to be manually adjusted, And machinery speed-controlling device to be stablized comparatively speaking.

Chinese patent notification number is " CN201487150U ", and the day for announcing is 2010.05.26, utility model title For a kind of mechanical stepless speed change gear, Application No. " 200920209193.6 ", this case discloses one The stepless speed change device of mechanical transmission fields.This apparatus structure is simple, easy for installation, but this device is using In there is problems in that

Cannot realize automatic speed regulation, need additional control power to retrain, output speed is unstable, and rotating speed is adjusted Being limited in scope of joint.

Chinese patent notification number is " CN104633095A ", and the day for announcing is 2015.05.20, utility model title For the speed adjusting gear of a kind of pulsating buncher, Application No. " 201510081437.7 ", public affairs in this case Having opened the speed adjusting gear of a kind of pulsating buncher, this apparatus structure is simple, and volume is little, can be in static state Or speed governing in dynamically, but this device in use there is problems in that

Worm screw is driven to rotate by handwheel, it is impossible to realize the stationarity rotated, and the range of speeds has Significant limitation, also cannot realize rotating speed and be automatically adjusted.

Summary of the invention

Technical problem to be solved in the utility model is to overcome prior art to there is the limitation of the range of speeds Property, rotary speed unstabilization is fixed and rotating speed cannot be automatically adjusted problem, it is provided that a kind of brake instrument determine what rotating speed was calibrated Mechanical type speed-controlling device.

For solving above-mentioned technical problem, this utility model adopts the following technical scheme that realization: described system Dynamic instrument is determined the mechanical type speed-controlling device of rotating speed calibration and is included lower support section, lower rotating part and upper rotating part.

Described lower support section include supporting leg mechanism that 4 nested structures are identical, mat, vertical support, Pillar top board and the identical collateral fagging of 2 block structures.

Described lower rotating part includes motor fixing plate, rotating shaft and a bearing group.

Described upper rotating part includes No. two axle sleeves, No. two bearing group and No. three axle sleeves.

Successively and mat uses welding manner to be connected with pillar top board with top in the bottom of vertical support, perpendicular Being connected for vertical between straight strut and mat with pillar top board, the supporting leg mechanism that 4 nested structures are identical installs It is threaded at the corner of mat, the collateral fagging that 2 block structures are identical) use bolt vertically solid It is scheduled at the left and right end of pillar top board；Lower rotating part is fixedly mounted on 2 by motor fixing plate therein On the top of the collateral fagging that block structure is identical, the bottom shaft part of rotating shaft uses interference fit to load motor and fixes In the one number service hole of plate center, a bearing group is sleeved in rotating shaft；Upper rotating part passes through No. two axles Set, No. two bearing group are sleeved in rotating shaft as being rotationally connected with No. three axle sleeves, the bottom face of No. two axle sleeves and one The top end face contact of number bearing group middle (center) bearing internal ring connects.

Lower rotating part described in technical scheme also include DC servo motor, gear, driving disc spacing pressing, Number bearing (ball) cover, brake disc and an axle sleeve；A described gear is arranged on the defeated of DC servo motor On shaft and use bonded, use bolt that the ring flange on DC servo motor is fixed on motor fixing plate Bottom surface on, No. two from motor fixing plate of the output shaft of DC servo motor of a gear are installed and lead to Protruding upward in hole, the bottom of rotating shaft loads in the one number service hole of motor fixing plate, the bottom of rotating shaft and No. one Being interference fit between through hole, a bearing group is sleeved in rotating shaft, the bearing of bottom in a bearing group Bottom face contact with the top end face of the shaft shoulder on the bottom shaft part of rotating shaft, an axle sleeve is arranged on an axle Holding between the two bearings in group, driving disc spacing pressing and a bearing (ball) cover are sleeved in rotating shaft successively, a bearing end The bottom face of lid and the top end face of a bearing group middle (center) bearing contact, and No. one between bearing (ball) cover and driving disc spacing pressing Employing bolt is fixed together, and gear and a gear on driving disc spacing pressing are meshed, and brake disc is arranged on On motor fixing plate around a number gear and driving disc spacing pressing, the bottom of brake disc uses bolt with motor fixing plate It is fixed together.

It is gear institute group by the ring flange that upper end is circle and lower end that driving disc spacing pressing described in technical scheme is one The structural member become, leaves an intersegmental gap between ring flange and gear, the center of driving disc spacing pressing is provided with to be passed through up and down Logical ladder hole, the diameter of shoulder hole the most from large to small, the diameter of topped hole and a bearing end The diameter of lid flange portion is identical, the diameter of the interstitial hole being connected with topped hole and the external diameter of a bearing group Identical；The anchor ring connecting topped hole and interstitial hole is provided with four along the circumferential direction on be evenly arranged For installing the screwed hole of a bearing (ball) cover, the diameter in the hole, bottom in ladder hole is minimum, hole, bottom Diameter is more than the diameter of the shaft shoulder of rotating shaft bottom, and the diameter in hole, bottom is less than the diameter of interstitial hole.

The fixing end of described in technical scheme a bearing (ball) cover is a flange, the diameter of flange and active The diameter of the topped hole on dish is identical, 4 through holes evenly distributed in the circumferential direction on flange, 4 through holes straight Footpath is identical with the external diameter of the screwed hole of setting on the anchor ring of interstitial hole with connection topped hole in driving disc spacing pressing, flange Centre be a through hole, the assembling end of a bearing (ball) cover is an annulus bodily form structural member, in flange Between through hole be mutually communicated with annulus bodily form structural member, in the external diameter of annulus bodily form structural member and a bearing group The external diameter of bearing is identical, and the wall thickness of annulus bodily form structural member is more than the wall thickness of bearing outer ring.

Motor fixing plate described in technical scheme be about one end face be symmetrical arc surface, front/rear end For the slab construction part of parallel identical rectangle plane, its width and the identical collateral fagging of two structures Width is identical, and its length, more than the length of pillar top board, is each provided with No. one and sinks at the corner of motor fixing plate Head bore, the diameter of counter sink is identical with the external diameter of collateral fagging top screwed hole, the distance between counter sink with Distance between the screwed hole of collateral fagging top is identical, is respectively arranged with No. two in the inner side of a counter sink and sinks Head bore, the counter sink portion of these four No. two counter sinks on bottom surface, the center of two No. two counter sinks in side front and back Line is coplanar with the centrage of front and back two counter sinks in side respectively, four No. two counter sinks each other between Away from and four screwed holes on the brake disc bottom face in lower rotating part between spacing identical, four No. two The diameter of counter sink is identical, in motor fixing plate with the external diameter of four screwed holes on brake disc bottom face Heart position is provided with an one number service hole, and the diameter in one number service hole is identical with the rotating shaft lower end diameter of axle, in left side two Position in the middle of an individual counter sink and one number service hole is provided with No. two through holes, and the diameter of No. two through holes is big The tip diameter of a gear in lower rotating part, before and after these No. two through holes, both sides are respectively arranged Having two screwed holes, front and back the screwed hole of side is symmetrical respectively about the transverse and longitudinal face plane of No. two through holes, screw thread The external diameter in hole is identical with the diameter of four through holes on the ring flange of the DC servo motor in lower rotating part, The screwed hole distance each other distance phase also and between four through holes on the ring flange of DC servo motor With.

Upper rotating part described in technical scheme also includes brake disc friction plate, driving disc spacing pressing friction plate, speed governing The identical dynamic friction of flexible member, 8 nested structures drive jackscrew that element, elastomer, 4 structures are identical, The double vertebral body of slip that clamping screw that 4 structures are identical, 4 structures are identical, constant speed rotating disk, No. four axle sleeves, No. two bearing (ball) covers, clamp nut, fixed plate and fixing bolt；Brake disc friction plate and driving disc spacing pressing friction plate Use bolt be fixedly connected on speed governing flexible member bottom face, brake disc friction plate, driving disc spacing pressing friction plate with The center conllinear of speed governing flexible member, outside, including driving disc spacing pressing friction plate, bolt head exists brake disc friction plate Above speed governing flexible member, the dynamic friction that 8 nested structures are identical drives element to be placed on bolt head, dynamically rubs Wipe and drive element to have one end of the conical surface upper, by elastomer identical for 4 structures in the middle of speed governing flexible member Small diameter bore on the annular thin slice of position loads, at the bottom of the top end face of elastomer spindle nose and speed governing flexible member End face contacts and is welded to connect, and the slip bicone that four nested structures are identical loads the cross knot on speed rotating disk In the through hole of structure, elastomer loads in the intermediate throughholes on slip bicone, the top end face of speed governing flexible member Contact connection with the bottom face of constant speed rotating disk, by bolt by the Internal and external cycle of speed governing flexible member respectively with actively Dish friction plate and brake disc friction plate are fixed together, and jackscrew that 4 nested structures are identical and clamping screw are successively from fixed Speed rotating disk on 4 screwed holes in be screwed into, No. two axle sleeves are sleeved in rotating shaft, the bottom face of No. two axle sleeves with The top end face contact of a number bearing group middle (center) bearing connects, and constant speed rotating disk is sleeved in rotating shaft, No. two bearing group and No. three axle sleeves are sleeved in rotating shaft, and wherein No. three axle sleeves are sleeved between two bearings in No. two bearing group, Connection is contacted successively, the bottom face of bottom bearing and the top of No. two axle sleeves in No. two bearing group between three Face contact connects, and No. four axle sleeves are sleeved in rotating shaft, goes up most in the bottom face of No. four axle sleeves and No. two bearing group The top end face contact of end bearing connects, and clamp nut is sleeved in rotating shaft, is threaded, tightly between the two Gu in the bottom face of nut flange end and No. two bearing group, topmost the top end face contact of bearing connects, No. two Bearing (ball) cover is sleeved in rotating shaft, and No. two bearing ends are stamped one end of flange and use bolt to fix with constant speed rotating disk Connecting, the top end face contact of the bottom face of No. two bearing (ball) covers and No. four axle sleeves connects, and uses fixed plate with solid Determine bolt to be fixed on the top of constant speed rotating disk by tested portable brake performance tester.

The cross section that speed governing flexible member described in technical scheme is differed by three diameter be rectangle etc. Annular thin slice that spacing is arranged and eight i.e. two groups are between three annular thin slices and the most equal The disk structure part that the rectangular tab that the structure of even layout is identical is connected, the annular thin slice of outermost end exists The screw thread being evenly arranged it is evenly arranged on four through holes, the diameter of through hole and brake disc friction plate on circumferencial direction The external diameter in hole is identical, and the diameter of the annular thin slice of outermost end is straight with the lower end disc structure part of constant speed rotating disk Footpath is identical, and the annular thin slice in centre position is circumferentially evenly arranged eight through holes, has two kinds of apertures, greatly The alternate layout of diametric hole and small diameter bore, large diameter hole and small diameter bore, the diameter of large diameter hole and driving disc spacing pressing The external diameter of the screwed hole being evenly arranged on friction plate is identical, the diameter of small diameter bore and elastomer upper part shaft part Diameter identical, inner terminal annular thin slice is evenly arranged four through holes, the diameter of through hole in a circumferential direction Identical with the external diameter of the screwed hole being evenly arranged on driving disc spacing pressing friction plate, the diameter of inner terminal annular thin slice is big External diameter in No. two bearing (ball) cover upper flanges.

Dynamic friction described in technical scheme drives element to be formed by a cylinder and cone Structural member, exactly, upper end be cone angle be the cone of 174 °, lower end is cylinder, cone Summit on cylindrical axis of rotation, the bottom circular diameter of cone is identical with cylinder diameter, is justifying Cylinder lower end is provided with a radial direction through hole, and the diameter of through hole is more than jackscrew and the external diameter of clamping screw, The center of cylindrical bottom face is axially disposed a blind hole, and blind hole from the bottom to top and is led to radial direction Hole is mutually communicated, and the diameter of blind hole is bigger than the diameter of through hole on the annulus thin slice of speed governing flexible member outermost end, Equal to being screwed into the diameter of the bolt head of bolt in the annulus thin slice of speed governing flexible member outermost end.

Constant speed rotating disk described in technical scheme is made up of with criss-cross upper end Y-piece lower end disc, It is provided with 4 screwed holes, the revolution of 4 screwed holes on the cylinder end face of lower end disc circumference radially evenly The axis of rotation of axis and lower end disc intersects vertically, and the axis of rotation of 4 screwed holes is in same plane, The 1/3 of a length of lower end disc radius of screwed hole, the external diameter of screwed hole and jackscrew and the screw thread on clamping screw External diameter is identical, and axially disposed on lower end disc have 8 screwed holes, and these 8 screwed holes are distributed in cross Upper end Y-piece 4 sector regions that lower end disc is divided in, in each region two, four, left side Screwed hole is arranged symmetrically with about the longitudinal median plane of constant speed rotating disk with four, right side screwed hole, and four, left side Screwed hole is centrally located on straight line, and the center of four screwed holes in right side also is located on straight line, left The spacing of two screwed holes spaced in the screwed hole of four, side is portable brake performance tester length Half, the spacing of two screwed holes spaced in the screwed hole of four, right side is also portable brake The half of energy tester length, the spacing between the screwed hole of the left and right sides is portable brake performance tester Width；

Criss-cross upper end Y-piece on constant speed rotating disk is intersected by two cuboid transverse and longitudinals and forms together, The diameter of a length of lower end disc of two cuboids, the width of two cuboids is more than slip bicone Major diameter, height is the twice of slip bicone maximum gauge, and the center of criss-cross upper end Y-piece is One cylinder, it is by greatly that cylindrical center is provided with a syllogic shoulder hole, i.e. syllogic shoulder hole Sector hole, middle sector hole and little sector hole are sequentially connected with composition, and the diameter of shoulder hole is the most descending, greatly Four screwed holes, the external diameter of screwed hole and No. two it are provided with middle sector hole equably on the anchor ring that sector hole is connected Through-hole diameter in bearing (ball) cover flange is identical, the aperture of the big sector hole in shoulder hole and No. two bearing (ball) covers In lip diameter identical, the length of the big sector hole in shoulder hole more than the thickness of No. two bearing (ball) cover flange, The aperture of the middle sector hole in shoulder hole is identical with the external diameter of No. two bearing group middle (center) bearings, the little sector hole in shoulder hole Diameter less than the internal diameter of No. two bearing group middle (center) bearing outer shrouds；In the Y-piece of criss-cross upper end each rectangular Respectively arranging a through long through-hole on the longitudinally asymmetric centerline direction of body, the diameter of long through-hole is double with slip The maximum gauge of vertebral body is identical, the distance between long through-hole and constant speed rotating disk bottom face more than slide double vertebral body and Dynamic friction drives the total height after the cone match on element, and long through-hole is positioned at lower end disc circumference cylinder The surface of 4 screwed holes on end face, is provided with four groups in a circumferential direction on the bottom surface of lower end disc The hole being evenly arranged, the hole that often three structures of group are identical, the diameter in hole drives the circle in element with dynamic friction The diameter of cylinder is identical, and the axis of rotation in these four groups of holes is distributed on the plane of symmetry of criss-cross upper end Y-piece, Being mutually communicated between these four groups of holes and criss-cross upper end Y-piece cross through hole, the center in these four groups of holes is respectively Align one by one with the center of speed governing flexible member outermost end and inner terminal annulus thin slice.

Slip bicone described in technical scheme is that about one two ends are cone and middle for cylindrical Structural member, the longitudinal cross-section of cone is an isosceles trapezoid, and the tapering of cone is 3 °, the length of cone Degree drives the distance between element leftmost side bus and elastomer leftmost side bus, cone less than dynamic friction Maximum gauge equal to the diameter of cross through hole in constant speed rotating disk, mediate cylindrical is provided with a radial direction and leads to Hole, the centrage of radial direction through hole is positioned on symmetrical of slip bicone, and the diameter of radial direction through hole is equal to The diameter of elastomer upper part shaft part, the total length of slip bicone is that two dynamic frictions drive elements One of them is long for the distance i.e. criss-cross Y-piece in constant speed rotating disk upper end between left side bus and rightmost side bus The length of cube.

Compared with prior art the beneficial effects of the utility model are:

When brake instrument the most described in the utility model determines the mechanical type speed-controlling device rotation of rotating speed calibration, torque ratio Less, a transmitting movement, drive element, speed governing flexible member, master by double vertebral body that slides, dynamic friction Moving plate friction plate, elastomer and driving disc spacing pressing constitute a mechanical type velocity feedback link, it is possible to achieve rotating speed Constant output, and need not manually often keep in repair.

Brake instrument the most described in the utility model is determined the mechanical type speed-controlling device of rotating speed calibration and is compressed bullet by jackscrew Gonosome produces elastic force, is determined the size of rotating speed by the size controlling elastic force, it is possible to achieve to rotating speed size Regulation.

Brake instrument the most described in the utility model determines the mechanical type speed-controlling device of rotating speed calibration by double vertebra that slides Body, dynamic friction drive element, speed governing flexible member, brake disc friction plate and brake disc to constitute a restriction The link that rotating speed is too high, it is possible to achieve the protective effect to device.

Accompanying drawing explanation

Below in conjunction with the accompanying drawings this utility model is further described:

Fig. 1 is the mechanical type speed-controlling device structure composition that brake instrument described in the utility model determines rotating speed calibration Front view；

Fig. 2 is the mechanical type speed-controlling device structure composition that brake instrument described in the utility model determines rotating speed calibration Axonometric projection graph；

Fig. 3 is that brake instrument described in the utility model determines lower supporting part in the mechanical type speed-controlling device that rotating speed is calibrated The axonometric projection graph of separation structure composition；

Fig. 4 is that brake instrument described in the utility model determines lower rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The axonometric projection graph of separation structure composition；

Fig. 5 is that brake instrument described in the utility model determines lower rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The top view of separation structure composition；

Fig. 6 is that brake instrument described in the utility model determines lower rotation section in the mechanical type speed-controlling device that rotating speed is calibrated Full sectional view on separation structure composition front view；

Fig. 7 is that brake instrument described in the utility model determines rotating part under the mechanical type speed-controlling device that rotating speed is calibrated In motor fixing plate structure composition front view；

Fig. 8 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The front view of separation structure composition；

Fig. 9 be in Fig. 8 brake instrument described in the utility model determine rotating speed calibration mechanical type speed-controlling device on The sectional view of structure composition at rotating part B-B；

Figure 10 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The axonometric projection graph of rate controlling part-structure composition in point；

Figure 11 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated In point, the dynamic friction in rate controlling part drives the structure composition front view of element；

Figure 12 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The structure composition axonometric projection graph of the speed governing flexible member in rate controlling part in point；

Figure 13 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The front view of constant speed turntable structure composition in point；

Figure 14 be in Figure 13 brake instrument described in the utility model determine rotating speed calibration mechanical type speed-controlling device in The sectional view of structure composition at constant speed rotating disk C-C in upper rotating part；

Figure 15 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated The axonometric projection graph of constant speed turntable structure composition in point；

Figure 16 is that brake instrument described in the utility model determines upper rotation section in the mechanical type speed-controlling device that rotating speed is calibrated Point and lower rotating part structure composition front view；

Figure 17 be in Figure 16 brake instrument described in the utility model determine rotating speed calibration mechanical type speed-controlling device in Full sectional view on structure composition front view at upper rotating part and lower rotating part D-D；

Below in conjunction with the accompanying drawings this utility model is explained in detail:

In figure: 1. descend support section, 2. descend rotating part, 3. go up rotating part, 4. supporting leg base, 5. Supporting leg adjusting screw rod, 6. supporting leg adjusting nut, 7. mat, 8. fix nut, 9. vertical support, 10. pillar top board, 11. collateral faggings, 12. DC servo motors, No. 13. gears, 14. motor fixing plates, 15. rotating shafts, 16. driving disc spacing pressings, No. 17. bearing group, No. 18. bearing (ball) covers, 19. brake discs, 20. 1 Number axle sleeve, 21. brake disc friction plates, 22. driving disc spacing pressing friction plates, 23. speed governing flexible members, 24. dynamically rub Wiping and drive element, 25. elastomers, 26 jackscrews, 27. clamping screws, the 28. double vertebral bodys of slip, 29. constant speed turn Dish, 30. No. two axle sleeves, 31. No. two bearing group, 32. No. three axle sleeves, 33. No. four axle sleeves, 34. No. two bearings End cap, 35. clamp nuts, 36. portable brake performance testers, 37. fixed plates, 38. fix bolt.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is explained in detail:

Refering to Fig. 1 and Fig. 2, brake instrument described in the utility model determines the mechanical type speed-controlling device master of rotating speed calibration To be made up of lower support section 1, lower rotating part 2 and upper rotating part 3, figure specifies portable brake Energy tester 36 have one end of projective structure to be the right side, and the other end on the other side is left, it can be seen that lower rotation DC servo motor 12 in part 2 is after a side in left side is, the other end on the other side is front.

Refering to Fig. 3, described lower support section 1 includes supporting leg mechanism, the mat that 4 nested structures are identical 7, vertical support 9, collateral fagging 11 that pillar top board 10 is identical with 2 block structures.

Described supporting leg mechanism is by supporting leg base 4, supporting leg adjusting screw rod 5, supporting leg adjusting nut 6 Form with fixing nut 8.

Described supporting leg base 4 be a vertical section be trapezoidal nylon structure part, the center on its top Place is provided with a sphere blind hole, and bottom face is arranged some half sphere shape protruded equably；

The bottom of described supporting leg adjusting screw rod 5 is a bulb, just can push up with supporting leg base 4 The sphere blind hole of end carries out hinged, constitutes a universal adjustment pair, and the other end of supporting leg adjusting screw rod 5 is One section of cylinder being threaded, the external diameter of screw thread and with its equipped supporting leg adjusting nut 6 and fixing The internal diameter of nut 8 is identical.

Described mat 7 is a square plate class formation part, sets respectively at the corner of mat 7 Being equipped with a tapped through hole, the external diameter of tapped through hole is identical with the external diameter of supporting leg adjusting screw rod 5, by rotation Dynamic supporting leg adjusting nut 6 adjusts the level height of mat 7, and the length and width of mat 7 are respectively Three times of vertical support 9 external diameter.

In the described columnar structured part that vertical support 9 is a hollow, its bottom and mat 7 Heart position welds together, and is connected for vertical between vertical support 9 with mat 7, vertical support 9 It it is highly six times of ultimate range between mat 7 and ground.

Described pillar top board 10 is a square plate class formation part, and its length and width are respectively outside vertical support 9 The twice in footpath, the core on pillar top board 10 top is provided with a circular central through hole, and circular central is led to The diameter in hole is identical with the internal diameter of vertical support 9, uses the mode of welding by pillar top board 10 and vertical support 9 weld together, and pillar top board 10 aligns with the two through hole on vertical support 9, i.e. on pillar top board 10 The axis of rotation conllinear of axis of rotation and vertical support 9 of central through hole, the corner punishment of pillar top board 10 It is not provided with a through hole.

Described collateral fagging 11 is a square plate class formation part, and its height is more than DC servo motor 12 Length, be each provided with a screwed hole at the collateral top end face of fagging 11 and the front and rear of bottom face, The external diameter of screwed hole respectively with at 10 4 jiaos of pillar top board arrange screwed hole external diameter identical, each other between Away from the most identical.

One end that supporting leg base 4 and supporting leg adjusting screw rod 5 have bulb is hinged, constitute one Universal adjustment base, screws in the non-articulated end of supporting leg adjusting screw rod 5 by supporting leg adjusting nut 6, then by 4 The universal adjustment base that set is made up of supporting leg base 4, supporting leg adjusting screw rod 5 and supporting leg adjusting nut 6 It is screwed into respectively in the tapped through hole at mat 7 four jiaos, and the top of supporting leg adjusting screw rod 5 exceeds One end, column base plate 7 top distance, more fixing nut 8 identical for 4 structures is screwed into supporting leg adjusting screw rod 5 Top, be fixed, then vertical support 9 be respectively welded in mat 7 and pillar top board 10 At the heart, the mode being bolted to connection by collateral fagging 11 identical for two structures successively with pillar top board The left and right end of 10 is fixed together, and the placement direction of the collateral fagging 11 that two structures are identical is fore-and-aft direction, It is connected for vertical between collateral fagging 11 and abacus 10 that two structures are identical, the side that two structures are identical Gripper shoe 11 is left and right on abacus 10 to be aligned, and adjusts by turning supporting leg adjusting nut 6 The level of mat 7.

Refering to Fig. 3, described lower support section 1 mainly completes the supporting role to whole device and adjusts whole The horizontal level of individual device.

Refering to Fig. 4 to Fig. 7, described lower rotating part 2 is main by 12, gear of DC servo motor 13, motor fixing plate 14, rotating shaft 15, driving disc spacing pressing 17, bearing (ball) cover 18 of 16, bearing group, Brake disc 19 and an axle sleeve 20 form.

The model of described DC servo motor 12 is 40HBM00330CAT, and rated power is 100w, amount Rotating speed 3000rpm, its fixing end is a square ring flange, is each provided with one and leads at the corner of ring flange Hole, the housing of motor is a cylindrical structural.

The center of a described gear 13 is provided with a through hole, the diameter of through hole and DC servo electricity The diameter of the output shaft of machine 12 is identical, passes through between a gear 13 and the output shaft of DC servo motor 12 Bonded mode is fixed together.

Described motor fixing plate 14 be about one end face be symmetrical arc surface, front/rear end be parallel The flat-type structural member of rectangle plane, the collateral support that its width is identical with two structures in lower support section 1 The width of plate 11 is identical, and its length is more than the length of the pillar top board 10 in lower support section 1, and motor is solid Determine at the corner of plate 14, to be each provided with a counter sink, the diameter in hole and collateral fagging 11 top screw thread The external diameter in hole is identical, and the spacing between each hole is the most identical, is respectively provided with in the inner side of a counter sink Have four No. two counter sinks, the counter sink portion of these four No. two counter sinks on bottom surface, four No. two counter sinks Spacing between spacing each other and four screwed holes on brake disc 19 bottom face is identical, four No. two The diameter of counter sink is identical with the external diameter of four screwed holes on brake disc 19 bottom face, at motor fixing plate 14 Center be provided with an one number service hole, the diameter in one number service hole is identical with the rotating shaft 15 lower end diameter of axle, Position in the middle of the counter sink in two, left side and one number service hole is provided with No. two through holes, No. two through holes Diameter is more than the tip diameter of a gear 13, and before and after these No. two through holes, both sides are each provided with two Screwed hole, front and back the screwed hole of side is respectively about the center transverse and longitudinal plane symmetry of No. two through holes, outside screwed hole Footpath is identical with the diameter of four through holes on DC servo motor 12 ring flange, and screwed hole distance each other is also Identical with distance between four through holes on DC servo motor 12 ring flange.

Described rotating shaft 15 is a direct rod shape structural member, is provided with a shaft shoulder in the lower end of rotating shaft 15, The length of the bottom shaft part between bottom face and the bottom face of rotating shaft 15 of the shaft shoulder and the thickness of motor fixing plate 14 Spending identical, the bottom shaft part of rotating shaft 15 uses No. of interference fit loading motor fixing plate 14 center In through hole, the diameter of the middle shaft part of rotating shaft 15 and the bearing bore diameter of a bearing group 17 are identical, rotating shaft 15 Top be one section of top shaft part being threaded, the external diameter of screw thread is less than the diameter of middle shaft part.

Described driving disc spacing pressing 16 is a structure being made up of by gear by circular ring flange and lower end upper end Part, leaves an intersegmental gap between ring flange and gear, the center of driving disc spacing pressing 16 is set to the rank of up/down perforation Ladder through hole, the diameter of shoulder hole the most from large to small, the topped hole i.e. diameter of bearing end cap bore and No. one The diameter of bearing (ball) cover 18 flange portion is identical, interstitial hole that is one that i.e. bearing end cap bore is connected with topped hole The diameter in number bearing group hole and the external diameter of a bearing group 17 are identical；At the annulus connecting topped hole and interstitial hole Be provided with on face four along the circumferential direction on be evenly arranged for install a bearing (ball) cover 18 screwed hole, The diameter in the hole, bottom in ladder hole is minimum, and the diameter in hole, bottom is more than the diameter of the shaft shoulder in rotating shaft 15, The lower end gear of driving disc spacing pressing 16 and a gear 13 mesh together one reducing gear of composition.

A described bearing group 17 selects 2 or several model is the deep groove ball bearing of 628002Z.

The fixing end of a described bearing (ball) cover 18 is a flange, on the diameter of flange and driving disc spacing pressing 16 The topped hole i.e. diameter of bearing end cap bore identical, 4 through holes evenly distributed in the circumferential direction on flange, 4 The diameter of through hole and the external diameter being connected on the topped hole anchor ring with interstitial hole the screwed hole arranged in driving disc spacing pressing 16 Identical, the centre of flange is a through hole, the torus that assembling end is a hollow of a bearing (ball) cover 18 Shape structural member, the through hole of the centre of flange is mutually communicated with annulus bodily form structural member, annulus bodily form structural member The external diameter of external diameter and bearing group 17 middle (center) bearing is identical, and the wall thickness of annulus bodily form structural member is more than bearing outer ring Wall thickness.

The described annulus bodily form structural member that brake disc 19 is a hollow, at the front and back ends of brake disc 19 Centre position respectively arrange a size that Open Side Down identical before and after through circular groove, circular arc The degree of depth of groove is the half of brake disc 19 height, circular groove a length of brake disc 19 along the circumferential direction The half of the difference of diameter and motor fixing plate 14 width, left and right two circular arc of the circular groove of front and back ends Body is fixing end, and four edges on the bottom face of two the circular arc bodies in left and right are provided with four screwed holes, The external diameter of screwed hole is identical, between four screwed holes with on motor fixing plate 14 four No. two counter bore diameters Also with four No. two counter sinks of spacing spacing each other is identical, and the height of brake disc 19 is more than driving disc spacing pressing 16 Width, the inside radius of brake disc 19 be more than a gear 13 and driving disc spacing pressing 16 centre-to-centre spacing, brake disc 19 Play one to slow down and the effect of speed limit.

A described axle sleeve 20 is a cylinder-like structure part, the internal diameter of cylinder-like structure part and rotating shaft 15 The diameter of mid portion shaft part is identical, and the thickness of an axle sleeve 20 is more than the bearing inner race of a bearing group 17 Thickness.

By bonded, a gear 13 is fixed on the output shaft of DC servo motor 12, the most again will A number gear 13 passes from No. two through holes of motor fixing plate 14, until the method on DC servo motor 12 Blue dish top end face contacts in coincidence, and the ring flange of DC servo motor 12 with the bottom surface of motor fixing plate 14 The through hole being evenly arranged aligns respectively with the screwed hole on motor fixing plate 14, is bolted to connection mode DC servo motor 12 is fixed together with motor fixing plate 14；By interference fit by rotating shaft 15 Bottom load in the one number service hole of motor fixing plate 14 core, then by a bearing group 17 from rotating shaft The upper end of 15 loads, until the bearing bottom face of bottom and the bottom axle of rotating shaft 15 in a bearing group 17 The top end face contact of the shaft shoulder of Duan Shangduan overlaps, and loads an axle sleeve 20 between the bearing of a bearing group 17, By driving disc spacing pressing 16 from the top of rotating shaft 15 load, gear parts under, the gear on driving disc spacing pressing 16 and No. one Gear 13 is meshed, then is loaded from the top of rotating shaft 15 by a bearing (ball) cover 18, has one end of flange to exist On, until the lower surface of a bearing (ball) cover 18 overlaps with the tip contact of bearing group 17 middle (center) bearing, A number bearing (ball) cover 18 is fixed together by the mode being then bolted to connection with driving disc spacing pressing 16, Brake disc 19 is sleeved on the motor fixing plate 14 around a gear 13 and driving disc spacing pressing 16, uses bolt The bottom of brake disc 19 is fixed together with motor fixing plate 14.

Brake instrument described in the utility model determines the lower rotating part 2 in the mechanical type speed-controlling device of rotating speed calibration As the issued section of rotating speed, act primarily as one and slow down and speed limit effect.

Refering to Fig. 8 to Figure 15, described upper rotating part 3 is mainly rubbed by brake disc friction plate 21, driving disc spacing pressing Pad 22, speed governing flexible member 23, dynamic friction drive element 24, elastomer 25, jackscrew 26, locking Bolt 27, slide double vertebral body 28, constant speed rotating disk 30, No. two bearing group 31 of 29, No. two axle sleeves, No. three axles Overlap 33, No. two bearing (ball) covers 34 of 32, No. four axle sleeves, clamp nut 35, fixed plate 37 and fixing bolt 38 Composition.

Refering to Fig. 9 and Figure 10, described brake disc friction plate 21 be a cross section be foursquare annular Structural member, its circumferencial direction has been evenly arranged four tapped through holes, and the external diameter of brake disc friction plate 21 is than system The external diameter of Moving plate 19 is little, and internal diameter is bigger than the internal diameter of brake disc 19, and the thickness of brake disc friction plate 21 is braking The half of dish 19 width.

Described driving disc spacing pressing friction plate 22 be a cross section be foursquare cirque structure part, its circumference side Upwards being evenly arranged four tapped through holes, the external diameter of driving disc spacing pressing friction plate 22 is than the method for driving disc spacing pressing 16 upper end Blue dish diameter is little, and internal diameter is bigger than the diameter of the ring flange intermediate throughholes of driving disc spacing pressing 16 upper end, driving disc spacing pressing friction plate The width of 22 is identical with the width of brake disc friction plate 21.

Refering to Figure 12, the cross section that described speed governing flexible member 23 is differed by three diameter is rectangle The annular thin slice being equally spaced and eight i.e. two groups are between three annular thin slices and in a circumferential direction The disk structure part that the rectangular tab that the structure that is evenly arranged is identical is connected, its upper surface is by meeting during power Deforming, the annular thin slice of outermost end is evenly arranged four through holes, the diameter of through hole in a circumferential direction Identical with the external diameter of the screwed hole being evenly arranged on brake disc friction plate 21, the annular thin slice of outermost end straight Footpath is identical with the diameter of the lower end disc structure part of constant speed rotating disk 29, and the annular thin slice in centre position is at circumference On be evenly arranged eight through holes, have two kinds of apertures, large diameter hole and small diameter bore, large diameter hole and minor diameter The alternate layout in hole, the external diameter phase of the screwed hole that the diameter of large diameter hole and driving disc spacing pressing friction plate 22 are evenly arranged With, the diameter of small diameter bore is identical with the diameter of elastomer 25 upper part shaft part, and inner terminal annular thin slice exists The spiral shell being evenly arranged it is evenly arranged on four through holes, the diameter of through hole and driving disc spacing pressing friction plate 22 on circumferencial direction The external diameter of pit is identical, and the diameter of inner terminal annular thin slice is more than the diameter of No. two bearing (ball) cover 34 upper flanges.

Refering to Fig. 9 and Figure 11, described dynamic friction drives element 24 to be a cylinder and a cone The structural member formed, exactly, upper end be cone angle be the cone of 174 °, lower end is cylinder, The summit of cone is on cylindrical axis of rotation, and the bottom circular diameter of cone is identical with cylinder diameter, Cylinder lower end is provided with a radial direction through hole, and the diameter of radial direction through hole is more than jackscrew 26 and clamping screw The external diameter of 27, axially disposed in the center of cylindrical bottom face have a blind hole, blind hole by down to Go up and be mutually communicated with radial direction through hole, on the diameter of the blind hole annulus thin slice than speed governing flexible member 23 outermost end The diameter of through hole is big, just equal to being screwed into the bolt of bolt in the annulus thin slice of speed governing flexible member 23 outermost end The diameter of head.

Refering to Fig. 9, described elastomer 25 is a rod-like structure part being shaped like bolt, and its surface is subject to During power, elastomer 25 can deform, a diameter of speed governing flexible member 23 centre position of its upper part shaft part Cirque structure part on the diameter of small diameter bore identical, its length is slightly smaller than in constant speed rotating disk 29 laterally leads to Top, hole is to the distance between constant speed rotating disk 29 bottom, and elastomer 25 is from speed governing flexible member 23 centre position Cirque structure part on small diameter bore load, until the top of elastomer 25 spindle nose and speed governing flexible member 23 bottom faces overlap, and then weld together.

Refering to Fig. 9, jackscrew 26 that in figure, the right side of constant speed rotating disk 29 is provided with and clamping screw 27, described Jackscrew 26 and clamping screw 27 on be threaded part external diameter and constant speed rotating disk 29 right flank on arrange The external diameter of screwed hole identical, it is hexagonal blind that the center of the right side of jackscrew 26 is provided with a cross section Hole, the degree of depth of blind hole is that the hexahedron length that clamping screw 27 left end protrudes is identical, a left side for clamping screw 27 End is a hexahedron protruded, and right-hand member is one section of screwed cylinder screw rod, cylinder screw rod Right side on be provided with a hole identical with on jackscrew 26 right flank, by turning the locking screw of right-hand member Bolt 27 can drive jackscrew 26 concomitant rotation of left end, after jackscrew 26 and clamping screw 27 are combined together Total length less than dynamic friction drive element 24 left surface and the right flank of elastomer 25 between distance.

Refering to Fig. 9 and Figure 10, the double vertebral body 28 of described slip is that about one two ends are cone and centre is Cylindrical structural member, the longitudinal cross-section of cone is an isosceles trapezoid, and the tapering of cone is 3 °, circle The length of cone drives between element 24 leftmost side bus and elastomer 25 leftmost side bus less than dynamic friction Distance, the maximum gauge of cone is equal to the diameter of cross through hole in constant speed rotating disk 29, in mediate cylindrical Being provided with a radial direction through hole, the centrage of radial direction through hole is positioned on symmetrical of double vertebral body 28 that slides, The diameter of radial direction through hole is equal to the diameter of elastomer 25 upper part shaft part, and the total length of slip bicone 28 is Two dynamic frictions drive the distance i.e. constant speed rotating disk 29 between leftmost side bus and the rightmost side bus of element 24 The length of upper end cross one of them cuboid of Y-piece, dynamic friction drives element 24 and slip bicone Coordinate between the cone inclined-plane of 28, can be with slip bipyramid when dynamic friction driving element 24 moves upward Self-locking occurs between the cone inclined-plane of body 28, and the bicone 28 that slides then can drive element at dynamic friction Move left and right on the inclined-plane of 24.

Refering to Figure 13 to Figure 15, described constant speed rotating disk 29 is by lower end disc and criss-cross upper end fork-shaped Part forms, and is provided with 4 screwed holes, 4 spiral shells on the cylinder end face of lower end disc circumference radially evenly The axis of rotation of pit and the axis of rotation of lower end disc intersect vertically, and the axis of rotation of 4 screwed holes is in same In one plane, the 1/3 of a length of lower end disc radius of screwed hole, the external diameter of screwed hole and jackscrew 26 and lock Major diameter of thread on tight bolt 27 is identical, and axially disposed on lower end disc have 8 screwed holes, these 8 spiral shells Pit is distributed in 4 sector regions that lower end disc is divided into by criss-cross upper end Y-piece, Mei Gequ In territory two, four, left side screwed hole and four, right side screwed hole are about the longitudinal median plane of constant speed rotating disk 29 Being arranged symmetrically with, and four, left side screwed hole is centrally located on straight line, the center of four screwed holes in right side is also Being positioned on straight line, the spacing of two screwed holes spaced in the screwed hole of four, left side is portable The half of brake performance tester 36 length, between two screwed holes spaced in the screwed hole of four, right side Distance is also the half of portable brake performance tester 36 length, and the spacing between the screwed hole of the left and right sides is The width of portable brake performance tester 36.

Refering to Figure 15, the criss-cross upper end Y-piece on constant speed rotating disk 29 is to be intersected by two cuboid transverse and longitudinals Forming, the diameter of a length of lower end disc of two cuboids, the width of two cuboids is more than sliding together The maximum gauge of dynamic double vertebral body 28, height is the twice of double vertebral body 28 maximum gauge that slides, criss-cross on The center of end Y-piece is a cylinder, and cylinder is by two round and smooth connections of crossing cuboid, cylinder Center be provided with a syllogic shoulder hole, i.e. syllogic shoulder hole by big sector hole, middle sector hole and segment Hole is sequentially connected with composition, and the diameter of shoulder hole is the most descending, is connected with middle sector hole at big sector hole Four screwed holes being evenly arranged in a circumferential direction, the external diameter of screwed hole and No. two axles it are provided with on anchor ring Through-hole diameter in socket end lid 34 flange is identical, the aperture of the big sector hole in shoulder hole and No. two bearing (ball) covers Lip diameter in 34 is identical, and the length of the big sector hole in shoulder hole is more than No. two bearing (ball) cover 34 flange Thickness, the aperture of the middle sector hole in shoulder hole is identical, in shoulder hole with the external diameter of No. two bearing group 31 middle (center) bearings The diameter of little sector hole less than the internal diameter of No. two bearing group 31 middle (center) bearing outer shrouds, the middle sector hole in shoulder hole is with little Forming an anchor ring between sector hole, the bottom surface contact of anchor ring and No. two bearing group 31 middle (center) bearing outer shrouds connects, Shoulder hole runs through constant speed rotating disk 29 from top to bottom；The longitudinal direction of each cuboid in the Y-piece of criss-cross upper end One through through hole is respectively set on symmetrical center line direction, the maximum of the diameter of through hole vertebral body 28 double with slip Diameter is identical, and the distance between through hole and constant speed rotating disk 29 bottom face more than the double vertebral body 28 of slip and is dynamically rubbed Wiping the total height after the cone match driven on element 24, long through-hole is positioned at the cylindrical end of lower end disc circumference On face, the surface of 4 screwed holes of radially even setting, i.e. long through-hole are parallel with screwed hole axis of rotation And be in together in vertical plane, the bottom surface of lower end disc is provided with four groups and is evenly arranged in a circumferential direction Hole, the often identical hole of three structures of group, cylindrical with dynamic friction driving element 24 of the diameter in hole Diameter is identical, and the axis of rotation in these four groups of holes is distributed on the plane of symmetry of criss-cross upper end Y-piece, and these are four years old Group hole from bottom to up until and be mutually communicated between the Y-piece cross through hole of criss-cross upper end, these four groups of holes Highly more than dynamic friction drive element 24 height, the center of this some holes respectively with speed governing flexible member 23 The center of outermost end and inner terminal annulus thin slice aligns one by one.

Refering to Fig. 9, described No. two axle sleeves 30 are a cylinder-like structure part, the internal diameter of No. two axle sleeves 30 with The diameter of rotating shaft 15 mid portion shaft part is identical, and the thickness of No. two axle sleeves 30 is more than the axle of a bearing group 17 Hold the thickness of inner ring.

No. two described bearing group 31 select 2 or several model is the deep groove ball bearing of 628002Z.

Described No. three axle sleeves 32 are a cylinder-like structure part, in the internal diameter of No. three axle sleeves 32 and rotating shaft 15 Between the diameter of part shaft part identical, the thickness of No. three axle sleeves 32 is slightly larger than the bearing inner race of No. two bearing group 31 Thickness.

Described 33 1 cylinder-like structure parts of No. four axle sleeves, the external diameter of No. four axle sleeves 33 and No. two bearing group The diameter of the bearing outer ring of 31 is identical, and the thickness of No. four axle sleeves 33 is more than the bearing outer ring of No. two bearing group 31 Thickness.

The fixing end of No. two described bearing (ball) covers 34 is a flange, and the diameter of flange is equal to constant speed rotating disk 29 The aperture of the big sector hole in the shoulder hole of center, the thickness of flange is less than the hole of the big sector hole on constant speed rotating disk 29 Length, 4 through holes evenly distributed in the circumferential direction on flange, in the diameter of through hole and constant speed rotating disk 29 Big sector hole is identical with 4 the screwed hole external diameters arranged on the anchor ring that middle sector hole connects, and the center of flange is One through hole, the assembling end of No. two bearing (ball) covers 34 is a torus, the through hole of the center of flange and circle The endoporus of ring body is mutually communicated, the toric external diameter of No. two bearing (ball) covers 34 and the external diameter of No. four axle sleeves 33 Identical, its wall thickness is less than the wall thickness of No. four axle sleeves 33.

Described clamp nut 35 is all-metal hexagonal flange dish clamp nut, and the lower end of nut is a protrusion Ring flange, the external diameter of ring flange is more than the diameter of No. two bearing group 31 middle (center) bearing inner rings, and ring flange is used for pushing up Bearing in tight No. two bearing group 31.

Refering to Fig. 2, described portable brake performance tester 36 model is JL-ZD2, and centre is square Key zone, the right side of key zone is display screen, and the right-hand member of portable brake performance tester 36 is provided with vertical view In a structure protruded.

Refering to Fig. 2 and Fig. 9, described fixed plate 37 is a square plate-type structural piece, on its top end face A through hole it is each provided with, the external diameter phase of the diameter of through hole and fixing bolt 38 near the place of front and back two sides With, the distance between two through hole is the width of portable brake performance tester 36.

Refering to Fig. 2, the external diameter of described fixing bolt 38 and the screwed hole on 29 times end discs of constant speed rotating disk External diameter is identical, and the length of fixing bolt 38 is more than the thickness of portable brake performance tester 36.

Brake disc friction plate 21 and driving disc spacing pressing friction plate 22 are fixed on speed governing by the mode that is bolted to connection On flexible member 23, and in brake disc friction plate 21, driving disc spacing pressing friction plate 22 and speed governing flexible member 23 Heart conllinear, brake disc friction plate 21 outside, including driving disc spacing pressing friction plate 22, brake disc friction plate 21 and main Moving plate friction plate 22 all on the downside of speed governing flexible member 23, bolt head on the upside of speed governing flexible member 23, institute Bolt head dynamic friction just can be allowed to drive element 24 to put into, more identical for eight nested structures is dynamically rubbed Wiping and drive element 24 to be placed on bolt head, dynamic friction drives element 24 to have one end of the conical surface upper, by 4 The identical elastomer 25 of individual structure from the cirque structure part in speed governing flexible member 23 centre position little directly Hole, footpath loads, until the top end face of elastomer 25 spindle nose contacts, so with speed governing flexible member 23 bottom face After weld together, by identical for four nested structures double vertebral body 28 cross knot from constant speed rotating disk 29 that slides The through hole extended transversely through on structure side loads, until the through hole in the middle of double vertebral body 28 that slides is positioned at constant speed rotating disk The position of 29 radiuses 1/2, loads elastomer 25 from the intermediate throughholes of double vertebral body 28 that slides the most again, Until the top end face of speed governing flexible member 23 contacts connection with the bottom face of constant speed rotating disk 29, then by four nooses Jackscrew 26 that structure is identical and the clamping screw 27 minor thread hole from constant speed rotating disk 29 side successively are screwed into, Clamping screw 27 is after jackscrew 26, till jackscrew 26 encounters elastomer 25, by No. two axle sleeves 30 Load from the top of rotating shaft 15, until the bottom face of No. two axle sleeves 30 and a bearing group 17 middle (center) bearing internal ring Top end face contact connect, constant speed rotating disk 29 is loaded from the top of rotating shaft 15, until constant speed rotating disk 29 Bottom is positioned at No. two axle sleeve 30 centre positions, then by No. two bearing group 31 and No. three axle sleeves 32 respectively from rotating shaft The top of 15 loads, and wherein No. three axle sleeves 32 are contained between the bearing in No. two bearing group 31, between three Contact connection successively, the bottom face of bottom bearing and the top end face of No. two axle sleeves 30 in No. two bearing group 31 Contact connect, by No. four axle sleeves 33 from the top of rotating shaft 15 load, until the bottom face of No. four axle sleeves 33 with In No. two bearing group 31, topmost the top end face contact of bearing connects, and clamp nut 35 is sleeved on rotating shaft (15) On, clamp nut 35 have one end of ring flange under, No. two bearing (ball) covers 34 are filled from the top of rotating shaft 15 Entering, No. two bearing (ball) covers 34 have one end of flange upper, are bolted to connection, by No. two bearing (ball) covers 34 are fixed together with constant speed rotating disk 29, the bottom face of No. two bearing (ball) covers 34 and the top of No. four axle sleeves 33 Face contact connects, and then uses fixed plate 37 and fixing bolt 38 by solid for portable brake performance tester 36 It is scheduled on the top of constant speed rotating disk 29.

Refering to Fig. 8 to Figure 15, described upper rotating part 3, as the core of whole device, mainly completes Regulation and control to speed.

Supporting leg adjusting screw rod 5 identical for four structures in lower support section 1 is screwed in mat 7, And one section of identical distance of the top end face of mat 7 of all back-outing, then twist on supporting leg adjusting screw rod 5 top Enter fixing nut 8, until the bottom face of fixing nut 8 contacts connection with the top end face of mat 7, pass through Turn supporting leg adjusting nut 6 can regulate the level of mat 7, then by vertical support 9 top and the end End is respectively welded at pillar top board 10 and the center of mat 7, then by identical for two structures collateral Fagging 11 is separately fixed at the left and right sides of pillar top board 10, by DC servo motor in lower rotating part 2 12 load from No. two through holes of motor fixing plate 14 left end equipped with one end of a gear 13, DC servo Motor 12 under, by interference fit by non-threaded for rotating shaft 15 end load motor fixing plate 14 centre one In through hole, it is respectively charged into driving disc spacing pressing 16, a bearing group 17, a bearing (ball) cover 18 from rotating shaft 15 upper end With an axle sleeve 20, wherein axle sleeve 20 is contained between the bearing of a bearing group 17, the most again by one Number bearing (ball) cover 18 and driving disc spacing pressing 16 are fixed, and to 18, bearing group 17 and of a bearing (ball) cover Compressing between a number axle sleeve 20, the gear of a gear 13 and driving disc spacing pressing 16 lower end just can engage, Constitute a reducing gear, brake disc 19 is fixed with motor fixing plate 14, by motor fixing plate 14 Be arranged on two collateral faggings 11, and be bolted to connection, and DC servo motor 12 under.

Brake disc friction plate 21 and driving disc spacing pressing friction plate 22 be separately fixed at speed governing bullet by upper rotating part 3 On property element 23, and brake disc friction plate 21, driving disc spacing pressing friction plate 22 and the center of speed governing flexible member 23 Conllinear, brake disc friction plate 21 outside, including driving disc spacing pressing friction plate 22, brake disc friction plate 21 and actively Dish friction plate 22 is all below speed governing flexible member 23, and bolt head is above speed governing flexible member 23, used Bolt head dynamic friction just can be allowed to drive element 24 to put into, then by dynamic friction identical for eight nested structures Driving element 24 to be placed on bolt head, dynamic friction drives element 24 to have the side of the conical surface upper, by 4 The identical elastomer 25 of individual structure from the cirque structure part in speed governing flexible member 23 centre position little directly Hole, footpath loads, until the top of spindle nose overlaps with speed governing flexible member 23 bottom face, then welds together, Laterally will pass through on the double vertebral body 28 decussate texture side from constant speed rotating disk 29 of sliding identical for four nested structures The through hole worn loads, until the through hole in the middle of double vertebral body 28 that slides is positioned at constant speed rotating disk 29 radius 1/2 Position, loads elastomer 25, until speed governing is elastic from the intermediate throughholes of double vertebral body 28 that slides the most again The top end face of element 23 overlaps with the bottom face of constant speed rotating disk 29, is bolted to connection speed governing elastic The Internal and external cycle of element 23 is fixed together with driving disc spacing pressing friction plate 22 and brake disc friction plate 21 respectively, then will In jackscrew 26 that four nested structures are identical and the clamping screw 27 minor thread hole from constant speed rotating disk 29 side successively Being screwed into, clamping screw 27 is after jackscrew 26, till jackscrew 26 encounters elastomer 25, by No. two Axle sleeve 30 loads from the top of rotating shaft 15, until in the bottom face of No. two axle sleeves 30 and a bearing group 17 The top end face contact of the internal ring of bearing connects, and is loaded from the top of rotating shaft 15 by constant speed rotating disk 29, until fixed Speed rotating disk 29 is centrally located at No. two axle sleeve 30 centre positions, then by No. two bearing group 31 and No. three axle sleeves 32 Loading from the top of rotating shaft 15 respectively, wherein No. three axle sleeves 32 are contained between the bearing in No. two bearing group 31, And compress the most respectively, the bottom face of No. two bearing group 31 middle (center) bearings and the top end face of No. two axle sleeves 30 Contact connects, and is loaded from the top of rotating shaft 15 by No. four axle sleeves 33, until the bottom of No. four axle sleeves 33 and two In number bearing group 31, the top end face contact of the top bearing connects, with clamp nut 35 by a bearing group 17 Carry out axial restraint with No. two bearing group 31, clamp nut 35 have one end of ring flange under, by No. two axles Socket end lid 34 loads from the top of rotating shaft 15, and No. two bearing (ball) covers 34 have one end of flange upper, pass through spiral shell Bolt is fixing to be connected, and is fixed together with constant speed rotating disk 29 by No. two bearing (ball) covers 34, No. two bearing (ball) covers 34 Bottom contact connection with the top end face of No. four axle sleeves 33, then will by fixed plate 37 and fixing bolt 38 Portable brake performance tester 36 is fixed on the top of constant speed rotating disk 29, driving disc spacing pressing 16 after assembling The bottom face of top end face and driving disc spacing pressing friction plate 22 leave 2～3mm gap.

Brake instrument determines the rate controlling principle of mechanical type speed-controlling device of rotating speed calibration:

After installing mechanical type speed-controlling device according to as above method, first unscrew four jackscrews respectively with torque spanner 26, till the surface of jackscrew 26 just contact resilient body 25, now driving disc spacing pressing friction plate 22 and active There is the gap of 2～3mm between dish 16 and between brake disc 19 and brake disc friction plate 21, use the most again Torque spanner tightens four jackscrews 26 respectively, and the degree tightened is identical, i.e. adds identical pretightning force, elastomer 25 can deform, so that slip bicone 28 is moved to the left (with the slip bicone on the right side of Figure 10 are Example), now slip bicone 28 can press against downwards dynamic friction and drive element 24, and dynamic friction drives element 24 can force speed governing flexible member 23 to deform downwards with the part of its joint, so that flexible member 23 The portion compresses driving disc spacing pressing friction plate 22 of the shape that changes, driving disc spacing pressing friction plate 22 can be downward-sloping, driving disc spacing pressing friction Contacting between part and driving disc spacing pressing 16 that sheet 22 is downward-sloping, this is original state, is equivalent to set one Individual target velocity, rotating speed of target is lower than DC servo motor 12 rotating speed, then starts DC servo motor 12, Allow it with certain rotational speed, then by a gear 13 and driving disc spacing pressing 16, rotating speed is delivered to rotating shaft 15 On, rotating shaft 15 can drive constant speed rotating disk 29 to rotate, in rotation process, due to DC servo motor The rotating speed of 12 is higher than rotating speed of target, then double vertebral body 28 that slides would not maintain poised state, owing to centrifugal force is big In pretightning force, double vertebral body 28 that slides can be moved laterally, thus forces the dynamic friction in outside to drive element 24 Moving down, the dynamic friction in outside drives the part that element 24 meeting pressuring elastic element 23 contacts therewith Deform downwards, so that brake disc friction plate 21 moves down, and occur with brake disc 19 upper surface Friction, makes the rotating speed of constant speed rotating disk 29 reduce, and due to the reduction of centrifugal force, elastomer 25 is due to elastic force Effect makes the double vertebral body 28 of slip will be to medial movement, until recovering to original state, i.e. speed arrives target Rotating speed, even if motor speed has fluctuation, this device drives element also by double vertebral body 28 that slides, dynamic friction 24, the machine that speed governing flexible member 23, driving disc spacing pressing friction plate 22, elastomer 25 and driving disc spacing pressing 16 are constituted Tool formula velocity feedback link, oneself constantly carries out the regulation of speed, thus realizes the constant output of rotating speed.

Claims (10)

1. a brake instrument determines the mechanical type speed-controlling device that rotating speed is calibrated, it is characterised in that described brake instrument The mechanical type speed-controlling device determining rotating speed calibration includes lower support section (1), lower rotating part (2) and upper rotation Partly (3)；

Described lower support section (1) include supporting leg mechanism that 4 nested structures are identical, mat (7), The collateral fagging (11) that vertical support (9), pillar top board (10) are identical with 2 block structures；

Described lower rotating part (2) includes motor fixing plate (14), rotating shaft (15) and a bearing group (17)；

Described upper rotating part (3) includes No. two axle sleeves (30), No. two bearing group (31) and No. three axles Set (32)；

The bottom of vertical support (9) and top use with pillar top board (10) with mat (7) successively Welding manner connects, and is vertical between vertical support (9) and mat (7) with pillar top board (10) Connecting, it is threaded at the corner of mat (7) that the supporting leg mechanism that 4 nested structures are identical is arranged on, 2 The collateral fagging (11) that block structure is identical uses bolt to be vertically fixed on the left and right of pillar top board (10) At end；It is identical that lower rotating part (2) is fixedly mounted on 2 block structures by motor fixing plate therein (14) Collateral fagging (11) top on, it is solid that the bottom shaft part of rotating shaft (15) uses interference fit to load motor Determining in the one number service hole of plate (14) center, a bearing group (17) is sleeved in rotating shaft (15)； Upper rotating part (3) is overlapped with No. three axle sleeves (32) by No. two axle sleeves (30), No. two bearing group (31) It is contained in rotating shaft (15) upper for being rotationally connected, the bottom face of No. two axle sleeves (30) and a bearing group (17) The top end face contact of middle (center) bearing internal ring connects.

2. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 1, its feature exists DC servo motor (12), gear (13), actively is also included in, described lower rotating part (2) Dish (16), bearing (ball) cover (18), brake disc (19) and an axle sleeve (20)；

A described gear (13) is arranged on the output shaft of DC servo motor (12) and uses and is bonded Connect, use bolt that the ring flange on DC servo motor (12) is fixed on the end of motor fixing plate (14) On face, the output shaft of DC servo motor (12) of a gear (13) is installed from motor fixing plate (14) On No. two through holes in protrude upward, the bottom of rotating shaft (15) loads the one number service of motor fixing plate (14) Kong Zhong, is interference fit between bottom and the one number service hole of rotating shaft (15), bearing group (17) suit In rotating shaft (15), the bottom face of the bearing of bottom and rotating shaft (15) in a bearing group (17) The top end face of the shaft shoulder on the shaft part of bottom contacts, and an axle sleeve (20) is arranged on a bearing group (17) In two bearings between, driving disc spacing pressing (16) and a bearing (ball) cover (18) are sleeved on rotating shaft (15) successively On, the bottom face of a bearing (ball) cover (18) and the top end face of bearing group (17) middle (center) bearing contact, Bolt is used to be fixed together between a number bearing (ball) cover (18) and driving disc spacing pressing (16), driving disc spacing pressing (16) On gear and a gear (13) be meshed, brake disc (19) is arranged on a gear (13) with main On Moving plate (16) motor fixing plate (14) around, the bottom of brake disc (19) and motor fixing plate (14) Employing bolt is fixed together.

3. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 2, its feature exists It is that circular ring flange with lower end by gear formed by one by upper end in, described driving disc spacing pressing (16) Structural member, leaves an intersegmental gap between ring flange and gear, the center of driving disc spacing pressing (16) is provided with up and down Through ladder hole, the diameter of shoulder hole the most from large to small, the diameter of topped hole and a bearing The diameter of end cap (18) flange portion is identical, the diameter of the interstitial hole being connected with topped hole and a bearing The external diameter of group (17) is identical；Four circumferentially sides it are provided with on the topped hole anchor ring with interstitial hole connecting The screwed hole for installing a bearing (ball) cover (18) being upwards evenly arranged, the hole, bottom in ladder hole Diameter minimum, the diameter in hole, bottom is more than the diameter of the shaft shoulder of rotating shaft (15) bottom, the diameter in hole, bottom Diameter less than interstitial hole.

4. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 2, its feature exists In, the fixing end of a described bearing (ball) cover (18) is a flange, the diameter of flange and driving disc spacing pressing (16) On the diameter of topped hole identical, 4 through holes evenly distributed in the circumferential direction, the diameter of 4 through holes on flange It is identical with the external diameter of the screwed hole of setting on the anchor ring of interstitial hole with driving disc spacing pressing (16) connects topped hole, The centre of flange is a through hole, and the assembling end of a bearing (ball) cover (18) is an annulus bodily form structural member, The through hole of the centre of flange is mutually communicated with annulus bodily form structural member, the external diameter of annulus bodily form structural member and No. one The external diameter of bearing group (17) middle (center) bearing is identical, and the wall thickness of annulus bodily form structural member is more than the wall thickness of bearing outer ring.

5. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 1, its feature exists In, described motor fixing plate (14) be about one end face be symmetrical arc surface, front/rear end be flat The collateral fagging (11) that the slab construction part of the identical rectangle plane of row, its width and two structures are identical Width identical, its length is more than the length of pillar top board (10), at the corner of motor fixing plate (14) Being each provided with a counter sink, the diameter of counter sink is identical with the external diameter of collateral fagging (11) top screwed hole, Distance between counter sink is identical with the distance between the screwed hole of collateral fagging (11) top, at a countersunk head The inner side in hole is respectively arranged with No. two counter sinks, and the counter sink portion of these four No. two counter sinks is on bottom surface, front The centrage of two No. two counter sinks of rear side is coplanar with the centrage of front and back two counter sinks in side respectively, and four On brake disc (19) bottom face in individual No. two counter sinks spacing each other and lower rotating part (2) Spacing between four screwed holes is identical, on the diameter of four No. two counter sinks and brake disc (19) bottom face The external diameter of four screwed holes identical, the center of motor fixing plate (14) is provided with an one number service Hole, the diameter in one number service hole is identical with rotating shaft (15) the lower end diameter of axle, at counter sink in two, left side and Position in the middle of number through hole is provided with No. two through holes, and the diameter of No. two through holes is more than lower rotating part (2) In the tip diameter of a gear (13), before and after these No. two through holes, both sides are each provided with two Screwed hole, front and back the screwed hole of side is symmetrical, outside screwed hole respectively about the transverse and longitudinal face plane of No. two through holes The diameter phase of footpath and four through holes on the ring flange of the DC servo motor (12) in lower rotating part (2) With, screwed hole distance each other also with four through holes on the ring flange of DC servo motor (12) it Between distance identical.

6. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 1, its feature exists In, described upper rotating part (3) also include brake disc friction plate (21), driving disc spacing pressing friction plate (22), The identical dynamic friction of speed governing flexible member (23), 8 nested structures drive element (24), elastomer (25), 4 Clamping screw (27) that jackscrew (26) that individual structure is identical, 4 structures are identical, the slip that 4 structures are identical Double vertebral bodys (28), constant speed rotating disk (29), No. four axle sleeves (33), No. two bearing (ball) covers (34), fastening spiral shells Female (35), fixed plate (37) and fixing bolt (38)；

It is elastic that brake disc friction plate (21) and driving disc spacing pressing friction plate (22) use bolt to be fixedly connected on speed governing On element (23) bottom face, brake disc friction plate (21), driving disc spacing pressing friction plate (22) and speed governing elasticity unit The center conllinear of part (23), brake disc friction plate (21) outside, including driving disc spacing pressing friction plate (22), Bolt head is in speed governing flexible member (23) top, and the dynamic friction that 8 nested structures are identical drives element (24) to put Putting on bolt head, dynamic friction drives element (24) to have one end of the conical surface upper, by identical for 4 structures Elastomer (25) from the annular thin slice in speed governing flexible member (23) centre position small diameter bore dress Entering, the top end face of elastomer (25) spindle nose contacts and the company of welding with speed governing flexible member (23) bottom face Connecing, the double vertebral body (28) of slip that four nested structures are identical loads the logical of the decussate texture in speed rotating disk (29) Kong Zhong, elastomer (25) loads in the intermediate throughholes slided on double vertebral body (28), speed governing flexible member (23) Top end face contact connection with the bottom face of constant speed rotating disk (29), by bolt by speed governing flexible member (23) Internal and external cycle be fixed together with driving disc spacing pressing friction plate (22) and brake disc friction plate (21) respectively, 4 nooses Jackscrew (26) that structure is identical and clamping screw (27) 4 screwed holes from constant speed rotating disk (29) successively In be screwed into, No. two axle sleeves (30) are sleeved in rotating shaft (15), the bottom face and of No. two axle sleeves (30) The top end face contact of number bearing group (17) middle (center) bearing connects, and constant speed rotating disk (29) is sleeved on rotating shaft (15) On, No. two bearing group (31) and No. three axle sleeves (32) are sleeved in rotating shaft (15), wherein No. three axle sleeves (32) it is sleeved between two bearings in No. two bearing group (31), between three, contacts connection successively, In No. two bearing group (31), the bottom face of bottom bearing and the top end face contact of No. two axle sleeves (30) connect, No. four axle sleeves (33) are sleeved in rotating shaft (15), the bottom face of No. four axle sleeves (33) and No. two bearing group (31) in, topmost the top end face contact of bearing connects, and clamp nut (35) is sleeved in rotating shaft (15), It is threaded between the two, the bottom face of clamp nut (35) ring flange end and No. two bearing group (31) The top end face contact of middle the top bearing connects, and No. two bearing (ball) covers (34) are sleeved in rotating shaft (15), No. two bearing (ball) covers (34) have one end employing bolt of flange and constant speed rotating disk (29) to fix and be connected, No. two The bottom face of bearing (ball) cover (34) and the top end face contact of No. four axle sleeves (33) connect, and use fixed plate (37) With fixing bolt (38), tested portable brake performance tester (36) is fixed on constant speed rotating disk (29) Top on.

7. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 6, its feature exists In, the cross section that described speed governing flexible member (23) is differed by three diameter is the equidistant of rectangle The annular thin slice arranged and eight i.e. two groups between three annular thin slices and in a circumferential direction uniform cloth The disk structure part that the rectangular tab that the structure put is identical is connected, the annular thin slice of outermost end is at circumference The spiral shell being evenly arranged it is evenly arranged on four through holes, the diameter of through hole and brake disc friction plate (21) on direction The external diameter of pit is identical, the lower end disc knot of the diameter of the annular thin slice of outermost end and constant speed rotating disk (29) The diameter of component is identical, and the annular thin slice in centre position is circumferentially evenly arranged eight through holes, has two kinds The alternate layout of aperture, large diameter hole and small diameter bore, large diameter hole and small diameter bore, the diameter of large diameter hole Identical with the external diameter of the screwed hole being evenly arranged on driving disc spacing pressing friction plate (22), the diameter of small diameter bore and bullet The diameter of gonosome (25) upper part shaft part is identical, and inner terminal annular thin slice is evenly arranged in a circumferential direction Four through holes, the diameter of through hole is identical with the external diameter of the screwed hole being evenly arranged on driving disc spacing pressing friction plate (22), The diameter of inner terminal annular thin slice is more than the external diameter of No. two bearing (ball) cover (34) upper flanges.

8. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 6, its feature exists In, described dynamic friction drives the structure that element (24) is formed by a cylinder and a cone Part, exactly, upper end be cone angle be the cone of 174 °, lower end is cylinder, the top of cone Point is on cylindrical axis of rotation, and the bottom circular diameter of cone is identical with cylinder diameter, at cylinder Lower end is provided with a radial direction through hole, and the diameter of through hole is more than jackscrew (26) and clamping screw (27) External diameter, axially disposed in the center of cylindrical bottom face have a blind hole, and blind hole is the most also It is mutually communicated with radial direction through hole, on the diameter of the blind hole annulus thin slice than speed governing flexible member (23) outermost end The diameter of through hole is big, equal to being screwed into the bolt of bolt in the annulus thin slice of speed governing flexible member (23) outermost end The diameter of head.

9. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 6, its feature exists In, described constant speed rotating disk (29) is made up of, in lower end with criss-cross upper end Y-piece lower end disc It is provided with 4 screwed holes, the axis of rotation of 4 screwed holes on the cylinder end face of disc circumference radially evenly Intersecting vertically with the axis of rotation of lower end disc, the axis of rotation of 4 screwed holes is in same plane, screw thread The 1/3 of a length of lower end disc radius in hole, the external diameter of screwed hole and jackscrew (26) and clamping screw (27) On major diameter of thread identical, axially disposed on lower end disc have 8 screwed holes, this 8 screwed holes distribution In 4 sector regions lower end disc being divided at criss-cross upper end Y-piece, in each region two, Four screwed holes in left side and four, right side screwed hole are about the longitudinal median plane symmetry cloth of constant speed rotating disk (29) Putting, and four, left side screwed hole is centrally located on straight line, the center of four screwed holes in right side also is located at one On bar straight line, the spacing of two screwed holes spaced in the screwed hole of four, left side is portable brake The half of energy tester (36) length, the spacing of two screwed holes spaced in the screwed hole of four, right side From being also the half of portable brake performance tester (36) length, the spacing between the screwed hole of the left and right sides Width for portable brake performance tester (36)；

Criss-cross upper end Y-piece on constant speed rotating disk (29) is to be intersected together by two cuboid transverse and longitudinals Composition, the diameter of a length of lower end disc of two cuboids, the width of two cuboids is more than double vertebra that slides The maximum gauge of body (28), height is the twice of double vertebral body (28) maximum gauge that slides, criss-cross on The center of end Y-piece is a cylinder, and cylindrical center is provided with a syllogic shoulder hole, i.e. Syllogic shoulder hole is sequentially connected with little sector hole by big sector hole, middle sector hole and forms, and the diameter of shoulder hole is from upper Under to descending, the anchor ring that big sector hole is connected with middle sector hole is provided with four screwed holes equably, Through-hole diameter on the external diameter of screwed hole and No. two bearing (ball) cover (34) flange is identical, big in shoulder hole The aperture of sector hole is identical with the lip diameter in No. two bearing (ball) covers (34), the length of the big sector hole in shoulder hole Degree is more than the thickness of No. two bearing (ball) cover (34) flange, the aperture of the middle sector hole in shoulder hole and No. two axles The external diameter holding group (31) middle (center) bearing is identical, and the diameter of the little sector hole in shoulder hole is less than No. two bearing group (31) The internal diameter of middle (center) bearing outer shroud；The longitudinally asymmetric centrage side of each cuboid in the Y-piece of criss-cross upper end One through long through-hole is respectively set, the maximum gauge of the diameter of long through-hole vertebral body (28) double with slip Identical, the distance between long through-hole and constant speed rotating disk (29) bottom face more than the double vertebral body (28) of slip and is moved The total height after cone match in state friction-driven element (24), long through-hole is positioned at lower end disc circumference The surface of 4 screwed holes on cylinder end face, is provided with four groups in circumference side on the bottom surface of lower end disc The hole being upwards evenly arranged, the hole that often three structures of group are identical, the diameter in hole drives element (24) with dynamic friction In cylindrical diameter identical, the axis of rotation in these four groups of holes is distributed in the right of criss-cross upper end Y-piece On title face, it is mutually communicated between these four groups of holes and criss-cross upper end Y-piece cross through hole, these four groups of holes Center with speed governing flexible member (23) outermost end and inner terminal annulus thin slice respectively, center aligns one by one.

10. determine the mechanical type speed-controlling device of rotating speed calibration according to the brake instrument described in claim 6, its feature exists It is that about one two ends are cone and middle for cylindrical structure in the double vertebral body (28) of, described slip Part, the longitudinal cross-section of cone is an isosceles trapezoid, and the tapering of cone is 3 °, and the length of cone is little The distance between element (24) leftmost side bus and elastomer (25) leftmost side bus is driven in dynamic friction, The maximum gauge of cone, equal to the diameter of cross through hole in constant speed rotating disk (29), mediate cylindrical is arranged Having a radial direction through hole, the centrage of radial direction through hole is positioned on symmetrical of double vertebral body (28) that slides, The diameter of radial direction through hole equal to the diameter of elastomer (25) upper part shaft part, slip bicone (28) total A length of two dynamic frictions drive the distance between leftmost side bus and the rightmost side bus of element (24) i.e. The length of constant speed rotating disk (29) upper end one of them cuboid of criss-cross Y-piece.