CN106979256B - Directional rotation control device for high-speed gear shaft - Google Patents
Directional rotation control device for high-speed gear shaft Download PDFInfo
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- CN106979256B CN106979256B CN201710324173.2A CN201710324173A CN106979256B CN 106979256 B CN106979256 B CN 106979256B CN 201710324173 A CN201710324173 A CN 201710324173A CN 106979256 B CN106979256 B CN 106979256B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/063—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by moving along the inner and the outer surface without pivoting or rolling, e.g. sliding wedges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Mechanical Operated Clutches (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a directional rotation control device for a high-speed gear shaft, which comprises a stepped shaft, a gear body part and a gear self-locking part, wherein the stepped shaft is arranged on the gear body part; the self-locking structure comprises a driving disc, a driven disc, a movable jaw, a thrust pin and a sealing cover. The gear body is fixed on a stepped shaft, a movable jaw is arranged in a stop groove in a driven disc, two ends of the movable jaw are connected with springs in return spring grooves through spring support columns on the jaws, a thrust pin is arranged in a thrust pin hole in the driven disc through a threaded fastener, a driving disc is matched with the jaws on the driving disc and the movable jaw through jaw grooves on the driving disc, the stepped shaft penetrates through an assembly body of the driving disc, the driven disc and the movable jaw, and the tail end of the stepped shaft is fixed in a far gear side fixing plate through a tapered roller bearing. After adopting above-mentioned structure, can realize the directional rotation function of gear.
Description
Technical Field
The invention relates to a directional rotating device suitable for a shaft.
Background
The gear is a common power transmission part in production, is usually positioned between the motor and the actuating mechanism and plays a role in transmitting force and movement; in many production situations, it is well-established in production requirements that a main shaft connected with a gear can only rotate in a certain direction, and the reverse rotation is strictly prohibited, otherwise, the machine or production personnel are easily injured, and the like. In practice, ratchet mechanisms, one-way clutches and the like are common among the mechanisms capable of achieving the above functions, and these mechanisms are more commonly found in bicycles, squaring machines, cranes and clocks and watches for one-way driving and reverse rotation prevention; however, for ratchet mechanisms, the operation is often accompanied by noise and vibration, the operating frequency cannot be too high, and it is obviously not the optimal choice for directional rotation of the high speed shaft; also for the one-way clutch, since the principle of its one-way operation is mainly based on the mutual engagement and collision of adjacent gears, it is determined that it cannot achieve good effect for controlling the directional rotation of the high-speed shaft, and in summary, the current control of the directional rotation of the high-speed shaft mainly has the following disadvantages: the noise and vibration problems caused by directional rotation are realized by depending on the collision or engagement principle; the problem of larger overall size caused by large use space.
Disclosure of Invention
The purpose of the invention is as follows: in view of the above prior art, a directional rotation control device for a high-speed gear shaft is provided, which can realize the directional rotation function of a gear.
The technical scheme is as follows: a directional rotation control device for a high-speed gear shaft comprises a stepped shaft, a gear body part and a gear self-locking part, wherein the gear body part and the gear self-locking part are arranged at the relative positions of the stepped shaft;
the gear body part comprises a gear, and the gear is fixed on a gear assembly table on the stepped shaft in a key connection mode;
the self-locking structure comprises a driving disc, a driven disc, a movable jaw, a return spring thrust pin and a sealing cover; the driving disc comprises a driving disc positioning structure, a claw groove, a seal cover mounting hole and a key groove; the driving disc is fixed on the self-locking structure fixing table through flat key matching of a key groove and a key groove in the stepped shaft, and is axially positioned through contact with the gear assembly table and the end face of the gear;
4-6 return spring grooves are circumferentially arranged at the end face of the driven disc, clamping jaws are arranged between adjacent return spring grooves, the same return spring groove is divided into two parts by a stop groove, and a movable clamping jaw is arranged in the stop groove; a thrust pin hole and a thrust pin slideway are arranged in each stop groove along the axial direction of the driven disc, and the thrust pin hole and the thrust pin slideway are positioned on the same axis; setting the rotating shaft to rotate clockwise, and setting the central axes of the thrust pin hole and the thrust pin slideway to be deviated to one side of the stopping groove on which the central axis rotates in the reverse direction; the position of the thrust pin hole close to the end face of the driven disc is provided with internal threads;
the length of the main body part of the movable jaw along the circumferential direction is smaller than the arc length of the stop groove where the movable jaw is located, the height of the movable jaw extending out of the stop groove is about 1/2 of the height of the jaw in the stop groove, and the length of the movable jaw along the axial direction is equal to the depth of the stop groove along the axial direction; two crossed through holes are distributed at one end of the main body part of the movable clamping jaw, the two through holes are axial through holes, the radiuses of the two through holes are equal, and the distance between circle centers of the two through holes is smaller than the diameter length of the through holes; the through hole is provided with fillets on two end faces of the movable clamping jaw, two side faces, perpendicular to the face where the through hole is located, of the movable clamping jaw are respectively distributed with a spring supporting column, the cross section of each spring supporting column is circular, the whole spring supporting column is arc-shaped, and the curvature of the arc is consistent with that of the return spring groove where the arc is located; the center of the intersection part of the two through holes on the movable jaw can be aligned with the central axis of the thrust pin slideway on the driven disc; the movable clamping jaw is arranged in a stop groove of the driven disc, two ends of the movable clamping jaw are fixed through a return spring, the length of the return spring in a natural state is equal to the arc length of the return spring groove, one end of the return spring penetrates through the spring supporting column, and the other end of the return spring penetrates through the spring positioning table;
the sealing cover is cylindrical, a central hole is a stepped hole and comprises a stepped shaft through hole, a bearing mounting hole and a threaded hole, the outer diameter of the sealing cover is equal to the inner diameter of the sealing cover mounting hole of the driving disc, the inner diameter of the stepped shaft through hole is larger than the diameter of the stepped shaft penetrating through the through hole, 4-6 countersunk head threaded through holes are uniformly distributed on the end face, in contact with the driving disc, of the sealing cover, and the sealing cover is fixedly connected with the threaded hole in the driven disc through a bolt;
the driven disc and the sealing cover penetrate through the stepped shaft and are fixed with the claw groove on the driving disc in a nested fit manner through the claw on the stepped shaft; the inner diameter of an assembly hole of the driven disc is larger than the diameter of a stepped shaft contacted with the assembly hole, and a bearing mounting hole of the sealing cover is connected with the stepped shaft through a single-row tapered roller bearing;
the thrust pin comprises a threaded fastener, a spring, a positioning boss, a thrust pin body and hemispherical heads at two ends; the thrust pin body is divided into two parts by a positioning boss, a threaded fastener is fixedly connected with internal threads in a thrust stopping through hole of a driven disc of the self-locking device, the spring is sleeved on the thrust pin body and positioned between the threaded fastener and the positioning boss, and the end face of the positioning boss is just contacted with the transitional end faces of the thrust pin slideway and the thrust pin hole when the spring is in a natural telescopic state; the thrust pin body and the hemispherical head on the other side of the positioning boss extend into the thrust pin slideway, and when the spring is in a telescopic state, the length of the part can extend into the through hole of the movable jaw.
Furthermore, a pressure sensor is arranged on the spring positioning table of the clamping jaw on one clockwise side.
Furthermore, both ends of the stepped shaft are provided with radial motion constraint mechanisms.
Further, the radial motion constraint mechanism on one side of the gear body part comprises a fixing plate on the side close to the gear, a single-row tapered roller bearing, a retainer ring and a baffle plate; two stepped holes are formed in the central position of the fixing plate close to the gear side, and 6-8 threaded holes are formed in the periphery of a central hole with a smaller diameter; the baffle comprises a disc structure and a bearing positioning structure, and the distribution number of the threaded holes on the disc structure and the distribution condition of the adjacent threaded holes at intervals are consistent with that of the threaded holes in the fixing plate at the side close to the gear;
the retainer ring and the single-row tapered roller bearing are sequentially arranged on the side face of the gear and are respectively arranged on a retainer ring mounting table and a bearing fixing table on the stepped shaft; the inner ring of the single-row tapered roller bearing is in interference fit with the bearing fixing table, the outer ring of the single-row tapered roller bearing is matched with a stepped hole in the fixing plate on the side close to the gear, and the bearing positioning structure in the baffle plate penetrates through a central hole where the outer ring of the roller bearing is located from the outer side of the fixing plate on the side close to the gear and connects and fixes the disc structure and a threaded hole in the fixing plate on the side close to the gear through bolt connection.
Furthermore, the radial motion constraint mechanism on one side of the gear self-locking part comprises a far gear side fixing plate, a single-row tapered roller bearing and a thrust ball bearing; two concentric stepped holes are formed in the central position of the far gear side fixing plate and respectively comprise a single-row tapered roller bearing mounting hole and a thrust ball bearing mounting hole, and a plurality of blind holes with the same diameter are distributed on the same circumference on the inner side of the vertical plate;
the end face of the driven disc is provided with a circle of annular driven disc positioning tables, the diameter of each driven disc positioning table is larger than that of a stepped shaft matched with the driven disc positioning table, a thrust ball bearing collar is sleeved on each driven disc positioning table and is in contact positioning with the end face of each driven disc positioning table through the outer end face of the collar of the bearing, and the inner ring of each thrust ball bearing is in interference fit with the driven disc positioning table; the seat ring of the thrust ball bearing is in fit contact with the mounting hole of the thrust ball bearing of the far gear side fixing plate and is connected with the stepped shaft through the single-row tapered roller bearing mounted in the single-row tapered roller bearing mounting hole.
Has the beneficial effects that: after the structure is adopted, the directional rotation function of the gear can be realized, the automatic alarm function is realized when the main shaft rotates reversely, and the damage to equipment and personnel caused by the reverse rotation of the main shaft is prevented; the structure can also shorten the braking time of the main shaft, and is greatly helpful for reducing non-production time and improving efficiency.
Drawings
FIG. 1 is a schematic view of a half-section structure of a high-speed gear shaft directional rotation control device according to the present invention;
FIG. 2 is a schematic structural view of a stepped shaft;
FIG. 3 is a schematic view of a driven plate-return spring-moving jaw assembly;
FIG. 4 is a schematic structural view of a fixing plate on the side close to the gear;
FIG. 5 is a schematic structural view of a distal gear side fixing plate;
FIG. 6 is a schematic view of the structure of the driving disk;
FIG. 7 is a schematic structural view of a driven disk;
FIG. 8 is a schematic structural view of the movable jaw;
FIG. 9 is a schematic view of a thrust pin construction;
FIG. 10 is a schematic view of the closure;
fig. 11 is a schematic view of the structure of the baffle.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1, a directional rotation control device for a high-speed gear shaft comprises a stepped shaft, a gear body part and a gear self-locking part, wherein the gear body part and the gear self-locking part are arranged at opposite positions of the same stepped shaft. The stepped shaft 1 comprises a bearing mounting table 1-1, a retainer ring mounting table 1-2, a gear assembly table 1-3 and a self-locking structure fixing table 1-4, wherein the cross section of each assembly seat of the stepped shaft is circular, the gear assembly table 1-3 is taken as a center, and the diameters of the cross sections of the two sides of the stepped shaft are sequentially decreased progressively along the axis direction.
The proximal gear side fixing plate 2 is installed at the right side of the gear body portion, and the distal gear side fixing plate 10 is installed at the left side of the gear self-locking portion. The proximal gear fixing plate 2 may have any shape, such as a rectangular shape or a circular shape. As shown in figure 4, a stepped shaft through hole 2-1 and a baffle plate mounting hole 2-2 are arranged at the center of a fixing plate 2 close to the gear side, and 6-8 threaded holes 2-3 are formed in the periphery of the baffle plate mounting hole 2-2. As shown in FIG. 11, the baffle plate 8 comprises a disc structure 8-1 and a bearing positioning structure 8-2, and the distribution number and the adjacent threaded hole interval of the threaded holes 8-3 on the disc structure 8-1 are consistent with the distribution of the threaded holes in the fixing plate 2 at the side close to the gear. The shape of the far gear side fixing plate 10 is not limited, as shown in fig. 5, two concentric stepped holes are arranged at the center position of the far gear side fixing plate, and are respectively a single-row tapered roller bearing mounting hole 10-1 and a thrust ball bearing mounting hole 10-2, and a plurality of blind holes 10-3 with the same diameter are distributed on the same circumference at the inner side of the vertical plate, and the diameter of the blind holes is far smaller than that of the stepped holes.
As shown in figure 1, the gear body part comprises a gear 5, the gear 5, a retainer ring 4 and a single-row tapered roller bearing 3 are sequentially arranged on one side of a stepped shaft 1, the gear 5 is fixed on a gear assembly table 1-3 on the stepped shaft 1 in a key connection mode, a retainer ring 4 and a single-row tapered roller bearing 3 are sequentially arranged on a retainer ring installation table 1-2 and a bearing fixing table 1-1 on the stepped shaft 1, an inner ring of the single-row tapered roller bearing 3 is in interference fit with the bearing fixing table 1-1, an outer ring is matched with a stepped hole in the near-gear side fixing plate 2, a bearing positioning structure 8-2 in a baffle plate 8 penetrates through a central hole where an outer ring of the roller bearing 3 is located from the outer side of the near-gear side fixing plate 2 and is connected and fixed with a threaded hole 8-3 in a disc structure 8-1 and a threaded hole in the near-gear side fixing plate 2-1 through bolt connection; the baffle 8 plays a role in positioning and preventing the bearing 3 from sliding in the axial direction.
As shown in figure 1, the self-locking structure comprises a driving disc 6-1, a driven disc 6-2, a movable jaw 6-3, a return spring 6-4, a thrust pin 6-5, a sealing cover 6-6 and a tapered roller bearing 6-7. As shown in FIG. 6, the driving disk 6-1 comprises a driving disk positioning structure 6-1-1, a claw groove 6-1-2, a cover mounting hole 6-1-3 and a key groove 6-1-4. As shown in FIG. 7, the driven disc 6-2 comprises a claw 6-2-1, a stop groove 6-2-2, a threaded hole 6-2-3, a return spring groove 6-2-4, a spring positioning table 6-2-5, a driven disc positioning table 6-2-6, an assembly hole 6-2-7, a thrust pin hole 6-2-8 and a thrust pin slideway 6-2-9.
The driving disk 6-1 is in flat key fit with a key groove in the stepped shaft 1 through the key groove 6-1-4 and is axially positioned by contacting with the gear assembly table 1-3 and the end face of the gear. As shown in figure 10, the sealing cover 6-6 is cylindrical, the central hole is a stepped hole and comprises a stepped shaft through hole 6-6-1, a bearing mounting hole 6-6-2 and a threaded hole 6-6-3, the outer diameter of the sealing cover 6-6 is equal to the inner diameter of the sealing cover mounting hole 6-1-3 of the driving disc, the inner diameter of the bearing mounting hole 6-6-2 is slightly smaller than the diameter of the outer ring of the single-row tapered roller bearing 6-7 matched with the bearing mounting hole, and the inner diameter of the stepped shaft through hole 6-6-1 is larger than the diameter of the stepped shaft 1-5 penetrating through the through hole. 4-6 countersunk head thread through holes 6-6-3 are uniformly distributed on the end face of the sealing cover 6-6, which is in contact with the driving disc 6-1, and the sealing cover 6-6 is fixedly connected with the threaded holes 6-2-3 on the driven disc through bolts.
As shown in figure 7, 4-6 return spring grooves 6-2-4 are arranged at the end face position of the driven disc 6-2, the claws 6-2-1 are arranged between adjacent return spring grooves, the same return spring groove is divided into two parts by the stopping groove 6-2-2, and the movable claws 6-3 are arranged in the stopping groove 6-2-2. A thrust pin hole 6-2-8 and a thrust pin slideway 6-2-9 are arranged in each stop groove 6-2-2 along the axial direction of the driven disc 6-2, and the thrust pin hole 6-2-8 and the thrust pin slideway 6-2-9 are positioned on the same axis; the thrust pin hole 6-2-8 and the thrust pin slideway 6-2-9 of the driven disc are through holes, and internal threads are arranged at the position, close to the left end face of the driven disc, of the thrust pin hole 6-2-8. When the rotating shaft is set to rotate clockwise, the central axes of the thrust pin hole 6-2-8 and the thrust pin slideway 6-2-9 are biased to the reverse rotation side of the central axis of the stop groove 6-2-2, namely the thrust pin hole 6-2-8 is not positioned at the central position of the stop groove 6-2-2 along the arc direction, but biased to the position of reverse rotation of the shaft.
As shown in FIG. 8, the movable jaw body portion 6-3-3 is rectangular in overall configuration and has a length along the circumferential direction that is less than the arc length of the retaining groove 6-2-2 in which it is located, the movable jaw extends out of the retaining groove to a height of about 1/2 the jaw height in the retaining groove, and the length along the axial direction of the movable jaw is equal to the depth of the retaining groove 6-2-2 along the axial direction. One end of the movable claw main body part 6-3-3 is distributed with two crossed through holes 6-3-4, the two through holes are through holes along the axial direction of the stepped shaft, the radius of the two through holes is equal, the distance between the circle centers of the two through holes is smaller than the diameter length of the through holes, and the radian of the connecting line of the circle centers of the two through holes is consistent with the curvature of the stop groove 6-2-2. The through hole 6-3-4 is provided with a fillet 6-3-2 at two end faces of the movable jaw, two side faces of the movable jaw, which are perpendicular to the surface of the through hole, are respectively provided with a spring support column 6-3-1, the cross section of the spring support column 6-3-1 is circular, the whole body is arc-shaped, the curvature of the arc is consistent with that of the return spring groove 6-2-4 where the arc is positioned, and the groove width of the return spring groove 6-2-4 is approximately equal to the groove depth. The center of the intersection of the two through holes 6-3-4 on the movable jaw is aligned with the central axis of the thrust pin slideway 6-2-9 on the driven disc. The movable clamping jaw 6-3 is installed in a stop groove 6-2-2 of the driven disc, two ends of the movable clamping jaw are fixed through a return spring 6-4, the length of the return spring 6-4 in a natural state is equal to the arc length of the return spring groove 6-2-4, the outer diameter of the spring is slightly smaller than the groove width of the return spring groove, one end of the movable clamping jaw penetrates through a spring supporting column 6-3-1 and is installed in the return spring groove 6-2-4, and the other end of the movable clamping jaw penetrates through a spring positioning table 6-2-5 located on the side face of the clamping jaw 6-2-1.
The driven disc 6-2 penetrates through the stepped shaft 1 and is fixed with the claw groove 6-1-2 on the driving disc 6-1 in a nesting fit mode through the claw 6-2-1 on the stepped shaft. The end face of the driven disc 6-2 is provided with a circle of annular driven disc positioning tables 6-2-6, the inner diameter of an assembling hole 6-2-7 of the driven disc 6-2 is slightly larger than the diameter of a stepped shaft 1 in contact with the driven disc, the driven disc penetrates through the stepped shaft 1 and is axially fixed through a bearing mounting table 1-1 and a thrust ball bearing 7, the thrust ball bearing 7 is sleeved on the driven disc positioning tables 6-2-6 and is in contact positioning with the end faces of the driven disc positioning tables 6-2-6 through the outer end faces of shaft rings of the bearing, and the inner rings of the thrust ball bearing 7 are in interference fit with the driven disc positioning tables 6-2-6; the seat ring of the thrust ball bearing 7 is in matched contact with a thrust ball bearing mounting hole 10-2 of the far gear side fixing plate 10, namely the thrust ball bearing mounting hole 10-2 in the far gear side fixing plate 10 is in end surface contact with a thrust ball bearing mounted on a driven disc positioning table 6-2-6, so that axial movement is restrained; and is connected with the stepped shaft through a single-row tapered roller bearing 9 arranged in a single-row tapered roller bearing mounting hole 10-1. The bearing mounting hole 6-6-2 of the sealing cover 6-6 is connected with the stepped shaft 1 through a single-row tapered roller bearing 6-7.
The stepped shaft 1 sequentially passes through a single-row tapered roller bearing 3, a retainer ring 4, a gear 5, a self-locking structure and a thrust ball bearing 7 which are fixed in the near gear side inner vertical plate 2, and is matched and fixed in a single-row tapered roller bearing mounting hole 10-1 of the far gear side vertical plate 10 at the tail end with a single-row tapered roller bearing 9.
The thrust pin 6-5 comprises a threaded fastener 6-5-1, a spring 6-5-2, a positioning boss 6-5-3, a thrust pin body 6-5-4 and hemispherical heads 6-5-5 at two ends. The thrust pin body 6-5-4 is divided into two parts by the positioning boss 6-5-3, and the two parts have different lengths. The threaded fastener 6-5-1 is fixedly connected with internal threads in the stop push pin through hole 6-2-8 of the driven disc of the self-locking device, and the end face of the threaded fastener 6-5-1 is flush with the end face of the driven disc 6-2 close to the side of the driven disc positioning table 6-2-6. The longer end of the thrust pin body 6-5-4 penetrates through the threaded fastener 6-5-1 and the spring contacted with the end face of the threaded fastener 6-5-1, the diameter of the body is slightly smaller than the diameter of an inner hole of the threaded fastener 6-5-1, and the body and the threaded fastener are connected in a clearance mode; the other end of the spring is contacted with the end face of the positioning boss 6-5-3; after installation, the end face of the positioning boss 6-5-3 is ensured to be just contacted with the transition end face of the thrust pin slideway 6-2-9 and the thrust pin hole 6-2-8 when the spring 6-5-2 is in a natural telescopic state, and the two end faces of the spring 6-5-2 are at a certain distance under the condition of compression. The length of the shorter part of the thrust pin body 6-5-4 is larger than the distance from the transition end face of the thrust stopping push pin slideway 6-2-9 of the driven disc and the thrust pin hole 6-2-8 to the contact end face of the movable jaw 6-3 and the driven disc, when the spring is in a compressed state, the structure can still ensure that the hemispherical head 6-5-5 of the thrust pin can extend to the junction of the two through holes 6-3-4 on the movable jaw 6-3, and when the spring 6-5-2 is in a natural telescopic state, the shorter part of the thrust pin body 6-5-4 can penetrate into the through hole 6-3-4 of the movable jaw 6-3, so that the length is enough. The shorter part of the thrust pin body 6-5-4 passes through the stop pin slideway 6-2-9 in the driven disc and the semi-spherical head 6-5-5 at the tail end contacts with the rounded part at the junction of two through holes 6-3-4 in the movable claw 6-3. The sum of the length of the longer part in the thrust pin body 6-5-4 and the length of the positioning boss along the axial direction is equal to the sum of the depth of the blind hole 10-3 and the depth of the thrust pin hole 6-2-8, and the diameter of the hemispherical head 6-5-5 is slightly smaller than the inner diameter of the blind hole 10-3 in the far gear side fixing plate 2-2.
A pressure sensor is arranged on a spring positioning table 6-2-5 of the jaw 6-2-1 positioned on one side of the clockwise direction, namely a pressure sensor is arranged on a return spring on one side of the side surface of the movable jaw 6-3, which is contacted with the groove surface of the stop groove 6-2-2 of the driven disc, at the contact position of the return spring and the spring positioning table 6-2-5, and the pressure sensor is used for detecting the pressure change of the spring at the end, namely the pressure sensor is arranged at the tail end of the spring which is in a pressed state during reverse rotation. When the shaft is reversed, a pressure sensor connected to the spring can detect the change of the reverse force of the spring and alarm, and further processing is carried out by staff.
The working principle is as follows:
and (3) during normal operation: the stepped shaft 1 rotates, the gear 5 and the driving disk 6-1 which are matched with the stepped shaft 1 in a key connection mode rotate along with the stepped shaft, and the sealing cover 6-6 matched with the stepped shaft 1 through a bearing and the driven disk 6-2 in clearance fit do not rotate. Before the driving disc 6-1 rotates, namely before the stepped shaft 1 rotates, a hemispherical head 6-5-5 at one end of a thrust pin 6-5 is positioned in a blind hole 10-3 of a vertical plate 10 at the far gear side, a hemispherical head 6-5-5 at the other end of the thrust pin 6-5 is positioned in a thrust pin slideway 6-2-9 of the driven disc 6-2, and a spring 6-5-2 positioned on the thrust pin 6-5 is limited by a movable claw main body part 6-3-3 by the fact that the thrust pin extends into the hemispherical head 6-5-5 at the thrust pin slideway 6-2-9 side and is in a compressed state; the movable claw 6-3 is in single-side contact with the groove side face of the stop groove 6-2-2 of the driven disc.
When the stepped shaft 1 rotates for a certain angle, the claw groove 6-1-2 on the driving disk 6-1 is gradually contacted with the movable claw 6-3, and the movable claw 6-3 is driven by the claw groove 6-1-2 of the driving disk to rotate along the arc direction in the stop groove 6-2-2 of the driven disk 6-2. The side surface of the movable claw 6-3 is contacted with one side of the groove surface of the stop groove 6-2-2, so that the movable claw 6-3 is unidirectional when the stop groove 6-2-2 moves, and the movable claw 6-3 can be blocked by the side surface of the stop groove 6-2-2 to be incapable of moving continuously when moving reversely, thereby ensuring the directional rotation function of the gear. As the thrust pin 6-5 does not move along the circumferential direction, when the movable jaw 6-3 rotates along the circumferential direction, the relative position of the thrust pin and the movable jaw is changed, the contact between the semi-spherical head 6-5-5 of the thrust pin and the main body part 6-3-3 of the movable jaw in the initial state is changed into the contact between the semi-spherical head 6-5-5 and the through hole 6-3-4 of the movable jaw 6-3, and along with the continuous rotation of the driving disc 6-1, the aperture 6-3-4 of the through hole, in which the thrust pin 6-5 is in contact with the movable jaw 6-3, is gradually increased until the semi-spherical head 6-5-5 can extend into the through hole 6-3-4 of the movable jaw under the pushing of the spring 6-5-2. When the semi-spherical head 6-5-2 of the thrust pin extends into the through hole 6-3-4 of the movable jaw 6-3, the semi-spherical head at the other end of the thrust pin 6-5 is withdrawn from the blind hole 10-3 in the fixed far gear vertical plate 10, at this time, the thrust pin 6-5 is completely positioned in the middle of the thrust pin slideway 6-2-9 of the driven disc 6-2 and the two through holes 6-3-4 of the movable jaw, so that the state that the thrust pin 6-5 is inserted into the fixed far gear vertical plate 10 to limit the rotary motion of the movable jaw 6-3 and the driven disc 6-2 is broken, the driven disc 6-2 is changed from the original zero degree of freedom to the state with the degree of freedom of 1, the rotary motion of the driving disc 6-1 is not hindered by the driven disc 6-2 and the movable jaw 6-3, further, it is presumed that the stepped shaft 1 connected to the driving disk 6-1 by a key can normally rotate. Therefore, in a specific direction, the stepped shaft 1 can drive the gear 5 to realize free unidirectional rotation.
When the driven disc moves in the opposite direction, the thrust pin 6-5 is simultaneously positioned in the thrust pin slideway 6-2-9 of the driven disc and the blind hole 10-3 of the vertical plate at the far side of the gear, so that the rotation of the driven disc 6-2 can be limited; meanwhile, the movable jaw 6-3 cannot move reversely due to the design that the movable jaw 6-3 is in contact with the single side surface of the driven disc locking groove 6-2-4, so that the semi-spherical head 6-5-5 of the thrust pin cannot enter the middle position of the intersecting hole 6-3-4 of the movable jaw and is always in contact with the main body part 6-3-3 of the movable jaw, the semi-spherical head 6-5-5 cannot withdraw from the far gear side vertical plate 10 due to the design, and the thrust pin 6-3 can always limit the rotation of the driven disc 6-2 and the movable jaw 6-3. The driven disc 6-2 is limited in rotation, the driving disc 6-1 matched with the driven disc 6-2 through the clamping groove is limited in rotation, the rotation of the driving disc 6-1 is further limited, the rotation of the stepped shaft 1 connected with the driving disc through a key is further limited, and the function of reverse locking is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a directional rotation control device of high-speed gear axle which characterized in that: the step shaft (1) comprises a gear assembly table (1-3) and a self-locking structure fixing table (1-4);
the gear body part comprises a gear (5), and the gear (5) is fixed on a gear assembly table (1-3) on the stepped shaft (1) in a key connection manner;
the self-locking structure comprises a driving disc (6-1), a driven disc (6-2), a movable jaw (6-3), a return spring (6-4), a thrust pin (6-5) and a sealing cover (6-6); the driving disc (6-1) comprises a driving disc positioning structure (6-1-1), a claw groove (6-1-2), a seal cover mounting hole (6-1-3) and a key groove (6-1-4); the driving disc (6-1) is in flat key fit with a key groove in the stepped shaft (1) through the key groove (6-1-4) and is fixed on the self-locking structure fixing table (1-4), and is in axial positioning through contact with the gear assembly table (1-3) and the end face of the gear;
4-6 return spring grooves (6-2-4) are circumferentially arranged at the end face of the driven disc (6-2), clamping jaws (6-2-1) are arranged between adjacent return spring grooves, the same return spring groove is divided into two parts by a stop groove (6-2-2), and movable clamping jaws (6-3) are arranged in the stop groove (6-2-2); a thrust pin hole (6-2-8) and a thrust pin slideway (6-2-9) are arranged in each stop groove (6-2-2) along the axial direction of the driven disc (6-2), and the thrust pin hole (6-2-8) and the thrust pin slideway (6-2-9) are positioned on the same axis; setting the rotating shaft to rotate clockwise, wherein the central axes of the thrust pin hole (6-2-8) and the thrust pin slideway (6-2-9) are inclined to one side of the stopping groove (6-2-2) on which the central axis rotates reversely; internal threads are arranged at the positions, close to the end face of the driven disc, of the thrust pin holes (6-2-8);
the main body part (6-3-3) of the movable jaw (6-3) is rectangular, the length of the main body part along the circumferential direction is smaller than the arc length of the stop groove (6-2-2) where the movable jaw is located, the height of the movable jaw (6-3) extending out of the stop groove is about 1/2 of the jaw height in the stop groove, and the length of the movable jaw along the axial direction is equal to the depth of the stop groove (6-2-2) along the axial direction; one end of the movable claw main body part (6-3-3) is distributed with two crossed through holes (6-3-4), the two through holes are axial through holes, the radiuses of the two through holes are equal, and the distance between circle centers of the two through holes is smaller than the diameter length of the through holes; the two end faces of the movable clamping jaw of the through hole (6-3-4) are respectively provided with a fillet (6-3-2), two side faces, perpendicular to the surface of the through hole (6-3-4), of the movable clamping jaw (6-3) are respectively provided with a spring supporting column (6-3-1), the cross section of the spring supporting column (6-3-1) is circular, the whole body is arc-shaped, and the curvature of the arc is consistent with that of a return spring groove (6-2-4) where the arc is located; the center of the intersection of the two through holes (6-3-4) on the movable jaw can be aligned with the central axis of the thrust pin slideway (6-2-9) on the driven disc; the movable clamping jaw (6-3) is arranged in a stop groove (6-2-2) of the driven disc, two ends of the movable clamping jaw are fixed through a return spring (6-4), the length of the return spring (6-4) in a natural state is equal to the arc length of the return spring groove (6-2-4), one end of the movable clamping jaw penetrates through a spring supporting column (6-3-1), and the other end of the movable clamping jaw penetrates through a spring positioning table (6-2-5);
the sealing cover (6-6) is cylindrical, a central hole is a stepped hole and comprises a stepped shaft through hole (6-6-1), a bearing mounting hole (6-6-2) and a threaded hole (6-6-3), the outer diameter of the sealing cover (6-6) is equal to the inner diameter of the sealing cover mounting hole (6-1-3) of the driving disc, the inner diameter of the stepped shaft through hole (6-6-1) is larger than the diameter of the stepped shaft penetrating through the stepped shaft through hole, 4-6 countersunk head threaded through holes (6-6-3) are uniformly distributed on the end face, in contact with the driving disc (6-1), of the sealing cover (6-6), and the sealing cover (6-6) is fixedly connected with the threaded hole (6-2-3) on the driven disc through a bolt;
the driven disc (6-2) and the sealing cover (6-6) penetrate through the stepped shaft (1) and are fixed with the claw groove (6-1-2) on the driving disc (6-1) in a nesting and matching mode through the claw (6-2-1) on the driven disc; the inner diameter of an assembly hole (6-2-7) of the driven disc (6-2) is larger than the diameter of the stepped shaft (1) contacted with the assembly hole, and a bearing mounting hole (6-6-2) of the sealing cover (6-6) is connected with the stepped shaft (1) through a single-row tapered roller bearing (6-7);
the thrust pin (6-5) comprises a threaded fastener (6-5-1), a spring (6-5-2), a positioning boss (6-5-3), a thrust pin body (6-5-4) and hemispherical heads (6-5-5) at two ends; the thrust pin body (6-5-4) is divided into two parts by a positioning boss (6-5-3), a threaded fastener (6-5-1) is fixedly connected with an internal thread in a driven disc stop push pin through hole (6-2-8) of the self-locking device, the spring (6-5-2) is sleeved on the thrust pin body (6-5-4) and is positioned between the threaded fastener (6-5-1) and the positioning boss (6-5-3), and the end face of the positioning boss (6-5-3) is just contacted with the transition end faces of the thrust pin slideway (6-2-9) and the thrust pin hole (6-2-8) when the spring (6-5-2) is in a natural telescopic state; the thrust pin body (6-5-4) and the hemispherical head (6-5-5) on the other side of the positioning boss (6-5-3) extend into the thrust pin slideway (6-2-9), and when the spring (6-5-2) is in a telescopic state, the length of the part can extend into the through hole (6-3-4) of the movable jaw (6-3).
2. The high-speed gear shaft directional rotation control device according to claim 1, characterized in that: a pressure sensor is arranged on the spring positioning table (6-2-5) of the jaw (6-2-1) positioned on one clockwise side.
3. The high-speed gear shaft directional rotation control device according to claim 1 or 2, characterized in that: both ends of the stepped shaft are provided with radial motion constraint mechanisms.
4. The high-speed gear shaft directional rotation control device according to claim 3, characterized in that: the radial motion constraint mechanism on one side of the gear body part comprises a fixing plate (2) on the side close to the gear, a single-row tapered roller bearing (3), a retainer ring (4) and a baffle plate (8); two stepped holes are formed in the center of the fixing plate (2) close to the gear side, and 6-8 threaded holes (2-1) are formed in the periphery of the center hole with the smaller diameter; the baffle (8) comprises a disc structure (8-1) and a bearing positioning structure (8-2), and the distribution number of the threaded holes (8-3) on the disc structure (8-1) is consistent with the distribution condition of the threaded holes in the fixing plate (2) close to the gear side in the interval of the adjacent threaded holes;
the retainer ring (4) and the single-row tapered roller bearing (3) are sequentially arranged on the side surface of the gear (5) and are respectively arranged on a retainer ring mounting table (1-2) and a bearing fixing table (1-1) on the stepped shaft (1); the inner ring of the single-row tapered roller bearing (3) is in interference fit with the bearing fixing table (1-1), the outer ring of the single-row tapered roller bearing is matched with a stepped hole in the near-gear side fixing plate (2), and a bearing positioning structure (8-2) in the baffle plate (8) penetrates through a central hole where the outer ring of the roller bearing (3) is located from the outer side of the near-gear side fixing plate (2) and is connected and fixed with a threaded hole in the disc structure (8-1) and the near-gear side fixing plate (2-1) through bolts.
5. The high-speed gear shaft directional rotation control device according to claim 4, characterized in that: the radial motion constraint mechanism on one side of the gear self-locking part comprises a far gear side fixing plate (10), a single-row tapered roller bearing (9) and a thrust ball bearing (7); two concentric stepped holes, namely a single-row tapered roller bearing mounting hole (10-1) and a thrust ball bearing mounting hole (10-2), are arranged at the central position of the far gear side fixing plate (10), and a plurality of blind holes (10-3) with the same diameter are distributed on the same circumference at the inner side of the vertical plate;
a circle of annular driven disc positioning tables (6-2-6) are arranged on the end faces of the driven discs (6-2), the diameters of the driven disc positioning tables (6-2-6) are larger than the diameter of the stepped shaft (1) matched with the driven disc positioning tables, shaft rings of thrust ball bearings (7) are sleeved on the driven disc positioning tables (6-2-6) and are in contact positioning with the end faces of the driven disc positioning tables (6-2-6) through the outer end faces of the shaft rings of the bearings, and the inner rings of the thrust ball bearings (7) are in interference fit with the driven disc positioning tables (6-2-6); the race of the thrust ball bearing (7) is in fit contact with the thrust ball bearing mounting hole (10-2) of the far gear side fixing plate (10) and is connected with the stepped shaft through a single-row tapered roller bearing (9) mounted in the single-row tapered roller bearing mounting hole (10-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324173.2A CN106979256B (en) | 2017-05-10 | 2017-05-10 | Directional rotation control device for high-speed gear shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324173.2A CN106979256B (en) | 2017-05-10 | 2017-05-10 | Directional rotation control device for high-speed gear shaft |
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| Publication Number | Publication Date |
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| CN106979256A CN106979256A (en) | 2017-07-25 |
| CN106979256B true CN106979256B (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710324173.2A Active CN106979256B (en) | 2017-05-10 | 2017-05-10 | Directional rotation control device for high-speed gear shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112922970B (en) * | 2021-05-12 | 2021-07-16 | 新乡学院 | Clutch assembly of crane power device |
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| EP0492836A1 (en) * | 1990-12-24 | 1992-07-01 | Eaton Corporation | Pin-type synchronizer |
| EP1572403A1 (en) * | 2002-12-20 | 2005-09-14 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Clamping chuck and key rod therefor |
| CN201055920Y (en) * | 2007-06-29 | 2008-05-07 | 浙江三鸥机械股份有限公司 | Novel self-locking type clamping head of hand-locking drill |
| CN202048154U (en) * | 2011-04-28 | 2011-11-23 | 甘亚冰 | Intermittent bidirectional drive mechanism, back-skidding preventing device comprising same and back-sliding preventing automobile |
| CN104944314A (en) * | 2015-05-14 | 2015-09-30 | 山东科技大学 | Mechanical climbing mechanism and application thereof |
| CN207080526U (en) * | 2017-05-10 | 2018-03-09 | 山东科技大学 | A kind of high speed gear shaft directional rotating control device |
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2017
- 2017-05-10 CN CN201710324173.2A patent/CN106979256B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492836A1 (en) * | 1990-12-24 | 1992-07-01 | Eaton Corporation | Pin-type synchronizer |
| EP1572403A1 (en) * | 2002-12-20 | 2005-09-14 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Clamping chuck and key rod therefor |
| CN201055920Y (en) * | 2007-06-29 | 2008-05-07 | 浙江三鸥机械股份有限公司 | Novel self-locking type clamping head of hand-locking drill |
| CN202048154U (en) * | 2011-04-28 | 2011-11-23 | 甘亚冰 | Intermittent bidirectional drive mechanism, back-skidding preventing device comprising same and back-sliding preventing automobile |
| CN104944314A (en) * | 2015-05-14 | 2015-09-30 | 山东科技大学 | Mechanical climbing mechanism and application thereof |
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| CN106979256A (en) | 2017-07-25 |
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