JP2013151189A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch that reliably prevents reversal after tongue rail shifting, prevents loss of turning energy transmission, and reduces maintenance and management cost.SOLUTION: A switch includes a motor 1 and an anti-reversal apparatus 8. The anti-reversal apparatus 8 forms a magnetic coupling between a rotating shaft and a fixed side thereof, on the outside of the motor 1.

Description

  The present invention relates to a tipping machine.

  Conventionally, as a track facility for selecting a route of a train or a vehicle, a turning machine as disclosed in Patent Document 1 is known. The switching machine of Patent Document 1 includes a speed reduction mechanism that reduces and transmits the rotational motion of a motor, and a conversion mechanism that converts the rotational motion transmitted from the speed reduction mechanism into a reciprocating linear motion of an operating rod. The speed reduction mechanism is configured in the order of a bevel gear, an intermediate gear, and a conversion gear from the side close to the rotation shaft (output shaft) of the motor. The conversion mechanism includes a cam bar attached to the conversion gear and a conversion roller. Including. The conversion roller is engaged with the cam groove of the cam bar and converts the rotational movement of the conversion gear and the cam bar into the reciprocating linear movement of the operating rod, thereby making the Tongleil a fixed position (or a reference line side) and a reverse position (or a branch). Switch to the line side).

  By the way, with this type of turning machine, the reversal that occurs after the completion of the conversion of the tongrel becomes a problem. That is, when the conversion roller hits the end corresponding to the conversion end position in the cam groove, the transmission direction of the rotational energy possessed by the rotating body such as each gear and motor described above is reversed and transmitted from the conversion mechanism to the speed reduction mechanism. Will be. Here, the rotational energy that has been reversed is partially absorbed by the slip of the friction joint that constitutes the speed reduction mechanism, but the force corresponding to the transmission force of the friction joint is not absorbed and is applied to the gear or shaft, And the shaft is elastically deformed. Then, when the rotating body stops at the end of conversion, the elastically deformed gear or shaft tries to return to its original position, and the rotating body is reversed by applying a reverse rotation force (reversing force). Deviation occurs. In particular, since the degree of elastic deformation of the gear and shaft is proportional to the transmission force of the friction joint, the reversal force changes depending on the use state of the friction joint, and as a result, there arises a problem of reversing to a position where the conversion is not completed. .

  Regarding the technique for preventing the reversal after the above-described conversion is completed, Patent Document 1 discloses that the reversing force is generated by the frictional force generated between the frictional member and the gear by bringing the frictional member into pressure contact with the gear constituting the speed reduction mechanism. A reversal prevention device for reducing the above is disclosed.

  However, in the friction-type reversal prevention device as disclosed in Patent Document 1, frictional force is also applied to the gear during normal conversion operation, so that transmission loss of rotational energy occurs. There is room for improvement.

  In addition, the frictional force varies depending on the wear of the contact surface, the aging of the material constituting the contact surface, and weather conditions such as humidity and temperature. It is difficult to perform the adjustment work for setting to, and it is also difficult to maintain the set friction force and maintain a stable reversal force reduction effect.

  Moreover, since the wear condition of the contact surface of the friction member changes depending on weather conditions such as humidity and temperature, it is difficult to grasp the wear condition of all the turning machines installed along the track. is there. As a result, it is necessary to perform inspection work to periodically check the degree of wear, and it is also necessary to replace the friction member for which the predetermined friction force cannot be obtained. However, there is room for improvement in terms of incurring high maintenance costs.

Japanese Patent Laid-Open No. 10-310057

  An object of the present invention is to provide a turning machine having an inversion prevention mechanism that can prevent inversion after completion of the Tongrel conversion.

  Another object of the present invention is to provide a turning machine having an anti-inversion mechanism that does not cause loss of rotational energy transmission.

  Yet another object of the present invention is to provide a tipping machine that can reduce maintenance costs.

  In order to solve the above-described problem, a turning machine according to the present invention includes an inversion prevention device and a motor. Since the anti-inversion device constitutes a non-contact magnetic coupling between the rotating shaft and the fixed side outside the motor, the inversion force is reduced by the magnetic force generated in the magnetic coupling constructed as described above, Therefore, it is possible to prevent reversal after the completion of the Tongrel conversion.

  That is, as already described, in this type of rolling machine, the reversing force generated after the completion of the conversion of the Tongrel produces a shift in the stopping position of the rotating bodies such as the gears and motors constituting the speed reduction mechanism. There is a problem of reversing to a position where the conversion is not completed.

  In order to solve the above-described problem, the anti-reversing device constituting the turning machine according to the present invention has a non-contact magnetic coupling between the rotating shaft and the fixed side thereof, thereby reducing the magnetic force. The reversing force can be reduced and the rotating body can be stopped at a predetermined position (specifically, the pulling back force generated when the magnetic coupling moves away from the rotation direction of the rotating shaft). . Therefore, it is possible to prevent inversion after completion of the Tongrel conversion.

  In addition, since the anti-inversion device according to the present invention forms a magnetic coupling between the rotating shaft and the fixed side thereof, the rotating shaft has a magnetic force (specifically, even when the rotation is stopped). Is held at the stop position. Therefore, it is possible to prevent inversion after completion of the Tongrel conversion.

  The magnetic coupling in the anti-inversion device according to the present invention generates a pulling back force when the magnetic coupling is in a relation of moving away from the rotation direction of the rotating shaft due to the magnetic force. A pulling force is generated when close to each other, giving torque to the rotating body. Since the influence of this torque pulsation on the rotating body is ± 0 in one cycle, no transmission loss occurs in the rotational energy during the normal conversion operation.

  Furthermore, the rotating body that constitutes this type of turning machine rotates at a high speed during the conversion of the Tongrel, and the rotational energy of the rotating body is much greater than the magnetic force of the magnetic coupling. Become. Therefore, the magnetic force (and torque pulsation) of the magnetic coupling does not hinder the smooth rotation of the rotating body.

  The reversal prevention device according to the present invention has an effect of reducing the reversal force due to the magnetic force of the non-contact magnetic coupling, and therefore is not affected by wear, aging, weather conditions, etc. Later inversion can be reliably prevented. In addition, maintenance costs can be reduced by the amount that inspection work for wear and aging, and replacement work for worn and aged parts are unnecessary.

As described above, according to the present invention, the following effects can be obtained.
(1) It is possible to provide a turning machine having an inversion prevention mechanism that can reliably prevent inversion after completion of the Tongrel conversion.
(2) It is possible to provide a turning machine having an inversion prevention mechanism that does not cause loss of rotational energy transmission.
(3) A tipping machine that can reduce maintenance costs can be provided.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

It is a figure which shows the switch machine which concerns on embodiment of this invention longitudinally. It is the figure which looked at the inversion prevention apparatus which comprises the turning machine of FIG. 1 from the rotating shaft side of the motor. It is a fragmentary sectional view which extracts and shows a part of FIG. It is a figure which simplifies and shows the use condition of the inversion prevention apparatus which concerns on embodiment of this invention. It is a figure which shows the state after the state shown in FIG. It is a figure which shows the state after the state shown in FIG. It is a graph which shows the rotational energy reduction effect | action by the inversion prevention apparatus which concerns on embodiment of this invention.

  1 to 7, the same reference numerals indicate the same or corresponding parts. 1 is a track facility for selecting a route of a train or a vehicle, and includes a motor 1, a speed reduction mechanism 2, and a conversion mechanism 3, which are attached to a case 4 of the turning machine. It has been. Since these can be configured in the same manner as those provided in an existing turning machine, they will be briefly described below.

  The motor 1 is a drive source and is attached to the outside of the case 4, and a rotating shaft 10 serving as an output shaft of the rotational motion is led into the case 4. The rotary shaft 10 has a first gear 11 made of a small bevel gear (bevel pinion) attached to the tip.

  The speed reduction mechanism 2 is configured by combining a plurality of gears (5 to 7) having different numbers of teeth, and reduces the rotational movement of the motor 1 and the rotary shaft 10 and transmits the reduced speed to the operating rod 32. The speed reduction mechanism 2 in FIG. 1 has a plurality of speed reduction portions, in the present embodiment, a three speed reduction section. The bevel gear 5 constituting the first speed reduction portion includes a second gear 51, a third gear 52, and a friction joint 53, and is attached to the inside of the case 4 by a rotary shaft 50 so as to be rotatable. The second gear 51 is a large bevel gear combined with the first gear 11. The friction joint 53 is provided between the second gear 51 and the third gear 52.

  The intermediate gear 6 constituting the second speed reduction portion includes the fourth gear 61 and the fifth gear 62 and is rotatably attached to the inside of the case 4 by the rotation shaft 60. The fourth gear 61 and the fifth gear 62 are supported by the rotating shaft 60 so as to rotate integrally. The conversion gear 7 constituting the final-stage third-stage reduction portion is rotatably attached to the inside of the case 4 by a rotation shaft 70 and has a sixth gear 71.

  The rotational movement of the motor 1 is decelerated when the first gear 11 fixed to the rotary shaft 10 side meshes with the second gear 51 on the bevel gear 5 side in the speed reduction mechanism 2, and the third gear 52 is an intermediate gear. The speed is reduced by meshing with the fourth gear 61 on the sixth side, and the speed is further reduced by meshing the fifth gear 62 coaxial with the fourth gear 61 on the sixth gear 71 on the conversion gear 7 side.

  A conversion mechanism 3 that converts the rotational movement of the motor 1 and the rotary shaft 10 transmitted from the speed reduction mechanism 2 into the reciprocating linear movement of the operating rod 32 is attached to the conversion gear 7. The conversion mechanism 3 in FIG. 1 includes a cam bar 30, a conversion roller 31 that is engaged with a cam groove (not shown) of the cam bar 30, an operating rod 32, a lock rod 33, and a lock piece 34.

  The cam bar 30 is attached to the rotation shaft 70 of the conversion gear 7 and rotates together with the rotation shaft 70. The conversion roller 31 swings with the rotation of the cam bar 30 and moves the operating rod 32 back and forth linearly. The operation rod 32 is for reciprocating the reciprocating linear movement to switch the tongler of the branching device (not shown) between the localization (or the reference line side) and the inverted position (or the branch line side). It is a substantially bar-shaped member extending in the front and back direction of one sheet. Similarly to the operation rod 32, the lock rod 33 is also a substantially rod-like member extending in the front and back direction of FIG. 1 and is connected in the vicinity of the tip of the Tongler and detects the position in the vicinity of the tip of the Tongler. The lock piece 34 engages and disengages from the notch provided in the lock rod 33 according to a predetermined condition, and locks and unlocks the operation rod 32.

  The switch of FIG. 1 has one of the features in that it has an inversion prevention device 8 in response to the basic configuration of the existing switch. The inversion prevention device 8 is attached to a rotating shaft 10 that is outside the motor 1 and protrudes into the case 4, and constitutes a non-contact magnetic coupling between the rotating shaft 10 and its fixed side. Specifically, referring to FIGS. 2 and 3, the inversion preventing device 8 includes a support plate 80, four first magnetic members 81, and four second magnetic members 82.

  The support plate 80 is formed by bending a metal plate material, and has a bottom surface 83 and four support walls 84. Since the support wall 84 is a place where a second magnetic member 82 to be described later is attached, the support wall 84 should be formed according to the number of the second magnetic members 82 attached. When the support plate 80 in FIG. 2 is unfolded, a square-shaped bottom surface 83 having sides corresponding to the folding lines as sides, and a square-shaped support continuous to the bottom surface 83 via the portions corresponding to the folding lines. The wall 84 forms a cross shape.

  The support plate 80 has a through hole 830 in the surface of the bottom surface 83, and is fastened to the case 4 in a state where the rotary shaft 10 is inserted into the through hole 830. The support wall 84 is bent and raised in the axial direction a of the rotary shaft 10 by the above-described fold line portion (not shown), and rotates across the axial direction a with the rotary shaft 10 inserted through the through hole 830. The rotary shaft 10 is surrounded in the radial direction d of the shaft 10 or in the rotational direction (R1, R2) of the rotary shaft 10.

  The four first magnetic members 81 are annularly arranged on the outer surface of the rotating shaft 10 at equal intervals when viewed in the rotation direction (R1, R2) of the rotating shaft 10. The first magnetic member 81 is either a permanent magnet or a magnetic body, and has a convex pole structure protruding in the radial direction d on the outer surface of the intermediate portion of the rotating shaft 10 viewed in the axial direction a. Yes. A first magnetic member 81 in FIG. 2 is a head portion of a bolt used for fixing the first gear 11 to the tip portion of the rotating shaft 10, and is mainly made of iron (Fe) or iron (Fe). It is comprised with the metal material which has magnetism, such as the alloy used as a component.

  The second magnetic member 82 is either a permanent magnet or a magnetic body, and is viewed in the radial direction d so as to face the first magnetic member 81 in a non-contact state with a gap therebetween. Is placed around. The second magnetic member 82 in FIGS. 2 and 3 includes a permanent magnet 85, a spacer 86, a screw 87, and a nut 88.

  The permanent magnet 85 is disposed in the inner surface of the support wall 84 via the spacer 86. The spacer 86 is used to adjust the distance (gap) between the opposing surfaces of the first magnetic member 81 and the permanent magnet 85 as viewed in the radial direction d. The screw 87 penetrates the permanent magnet 85, the spacer 86, and the support wall 84, and the penetrating end is screwed to a nut 88 disposed in the outer surface of the support wall 84, whereby the permanent magnet 85, The spacer 86 is fixed to the support wall 84. With this configuration, the second magnetic member 82 has a convex pole structure in which the permanent magnet 85 protrudes in the radial direction d or the direction facing the radial direction d inside the support wall 84.

  The inversion preventing device 8 shown in FIGS. 2 and 3 is paired with a second magnetic member 82 attached to the rotary shaft 10 and the second magnetic member 82, and is attached to the support wall 84 on the fixed side. The magnetic force generated when the first and second magnetic members 81, 82 that are configured to be in contact with each other with a gap in the radial direction d form a non-contact magnetic coupling is defined as a braking torque. The reverse of the speed reduction mechanism 2 after the end of conversion is prevented. Next, torque applied to the rotating shaft 10 by magnetic coupling will be described with reference to FIGS.

  First, in the Tongleil conversion step (not shown), when the rotary shaft 10 is rotated in the rotation direction R1 by the motor (1), the conversion roller (31) hits the position where the conversion of the cam bar (30) is completed. As described above, the direction of the rotational energy is reversed, and the rotary shaft 10 starts to rotate in the reverse direction R2.

  In FIG. 4, when the rotation shaft 10 rotates in the rotation direction R <b> 2 and the first magnetic member 81 located rearward in the rotation direction R <b> 2 is close to the permanent magnet 85 constituting the second magnetic member 82, A magnetic force (attracting force) F1 is generated between the first magnetic member 81 and the permanent magnet 85 by the magnetic coupling, and the rotational energy of the rotary shaft 10 is increased. That is, the magnetic force F1 acting on the first magnetic member 81 of FIG. 4 by the fixed permanent magnet 85 acts in a direction that coincides with the rotational direction R22 of the rotary shaft 10 and rotates integrally with the rotary shaft 10. The first magnetic member 81 acts so as to promote the position variation. As a result, the rotational energy E2 viewed at the rotational position of the rotating shaft 10 becomes larger than the rotational energy E1 (see FIG. 7).

  After the state shown in FIG. 4, when the first magnetic member 81 and the permanent magnet 85 come to overlap with each other in the radial direction d due to the rotational movement of the rotary shaft 10 as shown in FIG. 5, or When the first magnetic member 81 and the permanent magnet 85 come to the closest position, the magnetic force F1 of the permanent magnet 85 applies a force to hold the rotary shaft 10 at the position. Here, in the state shown in FIG. 5, when the reversal force is larger than the magnetic force F1, the rotating shaft 10 continues to rotate in the rotation direction R2. After the state shown in FIG. 5, as shown in FIG. 6, when the first magnetic member 81 is away from the permanent magnet 85 in the rotational direction R <b> 2, the first magnetic member 81 has the permanent magnet 85. Is applied, and the rotational energy of the rotary shaft 10 is attenuated. That is, the magnetic force F <b> 2 that acts on the first magnetic member 81 by the permanent magnet 85 acts in the direction R <b> 1 opposite to the rotation direction R <b> 2 of the rotation shaft 10, and rolls integrally with the rotation shaft 10. It acts to prevent the position fluctuation of the. As a result, the rotational energy E3 viewed at the rotational position of the rotary shaft 10 is smaller than the rotational energy E2 (see FIG. 7).

  After the state shown in FIG. 6, the rotating shaft 10 rotates and the first magnetic member 81 approaches the next second magnetic portion (82) in front in the rotation direction R <b> 2, thereby rotating the rotating shaft. 10, the magnetic forces F1 and F2 described with reference to FIGS. 4 to 6 again are applied in relation to the second magnetic member 82. The rotational movement of the rotary shaft 10 is stopped when the reversal force finally becomes zero due to the action of friction and the resistance of the mechanism itself in addition to the pullback by the magnetic force F2, and is directly opposed at that time. The rotating shaft 10 is held with the state where the first magnetism 81 is attracted to the second magnet member 82 (see, for example, FIG. 5) as a stop position.

  In general, how the magnetic forces F1 and F2 appear is larger at the edge portion or near the edge than the flat surface (edge effect). In order to make maximum use of this edge effect, the first and second magnetic members 81 and 82 have a convex pole structure, so that the end faces shown in FIG. When the corners shown in FIG. 2 are in a state of facing each other, the magnetic forces F1 and F2 act efficiently and strongly.

  Further, the magnetic forces F1 and F2 of the magnetic coupling are such that a pulling force F1 is generated when the magnetic coupling is close to the rotation shaft 10 in the rotation direction R2, and a pullback force F2 is generated when the magnetic coupling is moving away. Thus, torque pulsation as shown in FIG. The influence of this torque pulsation on the rotating shaft 10 is ± 0 in one cycle. As a result, as shown in FIG. 7, the turning machine b provided with the anti-inversion device 8 rotates at a rotational angle (or the number of rotations) smaller than that of the turning machine a without the anti-inversion device 8. (Reaction force) can be attenuated and stopped.

  By the way, as already explained, in the conventional turning machine, inversion occurring after the end of the conversion becomes a problem. That is, when the conversion roller 31 hits the end corresponding to the conversion end position in the cam groove of the cam bar 30, the direction of the rotational energy possessed by the rotating bodies such as the gears 5 to 7 and the motor 1 is reversed, and the conversion mechanism 3 is transmitted to the speed reduction mechanism 2. Here, the reverse rotational energy is partially absorbed by the slip of the friction joint 53, but the force corresponding to the transmission force of the friction joint 53 is not absorbed and applied to the gears 5 to 7 and the rotary shafts 50 to 70. The gears 5 to 7 and the rotating shafts 50 to 70 are elastically deformed. Then, when the rotating body stops with the end of conversion, the elastically deformed gears 5 to 7 and the rotating shafts 50 to 70 are reversed by applying a reverse rotation force (reversing force) to return to the original state. This causes a problem that the stop position shifts. In addition, since the degree of elastic deformation of the gears 5 to 7 and the rotating shafts 50 to 70 is proportional to the transmission force of the friction joint 53, the reversal force increases or decreases depending on the use state of the friction joint 53, and the stop position of the rotating body is changed. As a result, it becomes unstable, and as a result, the problem of reversing to a position where the conversion is not completed occurs.

  Here, the toppling machine is a track facility that selects the course of the train or vehicle, and its malfunction is directly linked to a serious accident such as a start-up accident or, in the worst case, a derailment or collision accident. Therefore, it is required to prevent reversal after the conversion is completed and to ensure the reliability as the switching point of the switching machine.

  Regarding the technology for preventing reversal after the above-described conversion completion, conventionally, with respect to the technology for preventing reversal after the completion of conversion, the friction member is pressed against one of the gears (5-7) constituting the speed reduction mechanism (2), 2. Description of the Related Art A friction type anti-inversion device that reduces an inversion force by a friction force generated between a friction member and a gear (5 to 7) is known.

  However, in the friction type reversal prevention device, the frictional force is also applied to the gears (5 to 7) during the normal conversion operation, so there is room for improvement in that loss of rotational energy is generated. There is. In addition, the frictional force varies depending on the wear of the contact surface, the aging of the material constituting the contact surface, and weather conditions such as humidity and temperature. It is difficult to perform the adjustment work for setting to, and it is also difficult to maintain the set friction force and maintain a stable reversal force reduction effect.

  Moreover, since the wear condition of the contact surface of the friction member changes depending on weather conditions such as humidity and temperature, it is difficult to grasp the wear condition of all the turning machines installed along the track. is there. As a result, it is necessary to perform inspection work to periodically check the degree of wear, and it is also necessary to replace the friction member for which the predetermined friction force cannot be obtained. Only incurs high maintenance costs.

  In addition, in the friction type anti-reversal device, the number of parts increases by the amount required for the friction member and the elastic member for pressing the friction member against the gears (5 to 7). Furthermore, the risk of failure increases as the number of parts increases and the structure becomes complex. If the friction type reversal prevention device breaks down, the gear is locked from the viewpoint of fail-safe and cannot be converted. As a result, there is a risk of causing a serious accident.

  Unlike the above-described prior art, according to the inversion prevention device 8 of FIGS. 2 and 3 and the turning machine of FIG. 1 using the same, the inversion after the end of the conversion is prevented and the turning machine is required. It is possible to ensure reliability as a switching point.

  First, the anti-reversing device 8 constituting the turning machine of FIG. 1 includes magnetic forces F1 and F2 of a magnetic coupling formed between the rotating shaft 10 and its fixed side, specifically, a magnetic coupling. Since the reversing force can be reduced by the pulling back force F1 generated when the rotation axis 10 moves away from the rotation direction R2 of the rotating shaft 10 (see FIG. 5), the rotating body can be stopped at a predetermined position. Inversion after the end of conversion can be prevented.

  1 is attached to the rotating shaft 10 of the motor 1, and therefore can effectively prevent reversal with the minimum required braking torque. However, even if the inversion prevention device 8 is attached to any one of the gears 5 to 7 constituting the speed reduction mechanism 2, the inversion can be prevented. When attaching to each of the gears 5 to 7 constituting the speed reduction mechanism 2, a large braking torque is required, so that it is necessary to increase the magnetic forces F1 and F2. In addition, it is required to devise the installation location and installation mode in a limited space.

  Since the inversion preventing device 8 constitutes a magnetic coupling between the rotating shaft 10 and the fixed side thereof, the magnetic force of the magnetic coupling is applied to the rotating shaft 10 even when the rotation is stopped. It is held at that stop position. As a result, when the switch is stopped, the braking force of the magnetic coupling of the reversing prevention device 8 acts to prevent the natural displacement of the speed reduction mechanism 2, and the position of the speed reduction mechanism 2 can be held. . Therefore, it is possible to prevent inversion after completion of the Tongrel conversion.

  The magnetic forces F1 and F2 of the magnetic coupling constituting the inversion preventing device 8 generate a pullback force F1 when the magnetic coupling is in the relationship of moving away in the rotation direction R2 of the rotating shaft 10, and are attracted when close to each other. When the force F2 is generated, torque pulsation (see FIG. 7) is given to the rotating body. Since the influence of the torque pulsation on the rotating body is ± 0 in one cycle, no transmission loss occurs. When the magnets are equally arranged, the torque pulsation has a stable (uniform) waveform as shown in FIG.

  Furthermore, the rotating body that constitutes this type of turning machine rotates at a high speed during the conversion of the Tongrel and rotates in comparison with the magnetic forces F1 and F2 (torque pulsation) of the magnetic coupling. Since the rotational energy of the body is much larger, the magnetic forces F1 and F2 (torque pulsations) of the magnetic coupling do not hinder the smooth rotation of the rotating body during conversion.

  As described above, the anti-reversal device 8 of FIGS. 1 to 7 has the effect of reducing the reversal force by the magnetic forces F1 and F2 of the non-contact magnetic coupling. Does not occur. Accordingly, the maintenance cost can be reduced by the amount that the inspection work for wear and aging deterioration and the replacement work for the worn and aged parts are unnecessary.

  Further, in the magnetic coupling type inversion preventing device 8, adjustment work for setting the magnetic forces F1 and F2 to a predetermined value is easy by selecting materials of the first and second magnetic members 81 and 82, and the like. In addition, it is easy to maintain the set magnetic forces F1 and F2 and maintain a stable reversal force reduction effect.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is. For example, the first and second magnetic members 81 and 82 only need to form a non-contact magnetic coupling between the rotating shaft 10 and its fixed side. One magnetic member 81 may be formed of a permanent magnet, and the second magnetic member 82 may be formed of a magnetic material. Of course, both the first and second magnetic members 81 and 82 can be formed of permanent magnets. When both the first and second magnetic members 81, 82 are composed of permanent magnets, the permanent magnets constituting the first magnetic member 81 all have the same polarity in the radial direction d, and the second magnetic member 81 Can be arranged so as to have a different polarity with respect to the permanent magnet constituting the first magnetic member 81.

  Moreover, it is preferable that the number of the 1st, 2nd magnetic members 81 and 82 which comprise a magnetic coupling is at least one pair or more. The reason why the number of pairs is four in the embodiment shown in FIGS. 2 and 3 is that, for example, when the number of pairs is small, the arrangement balance becomes poor as a result of a decrease in the number. In consideration of the point that it causes transmission loss and causes noise and failure, it is difficult to bend the support wall 84 for attaching the second magnetic member 82 in the case of three pairs. It is a thing.

1 Motor 10 Rotating shaft (Output shaft)
8 Inversion prevention device R1, R2 Rotation direction

Claims (4)

A tipping machine including an anti-inversion device and a motor,
The inversion prevention device constitutes a non-contact magnetic coupling between the rotating shaft and the fixed side outside the motor.
Tumbler. A tipping machine according to claim 1,
The magnetic coupling is coupled in a rotational direction of the rotary shaft;
Tumbler. A tipping machine according to claim 1 or 2,
At least one of the magnetic couplings has a convex pole structure,
Tumbler. A tipping machine according to any one of claims 1 to 3,
The inversion prevention device is attached to a rotating shaft of the motor.
Tumbler.

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