JP5219751B2 - Hoisting machine with built-in load-sensitive automatic transmission and load-sensitive automatic transmission - Google Patents

Description

  The present invention relates to a load-sensitive automatic transmission and a hoisting machine incorporating a load-sensitive automatic transmission, and more specifically, smoothly transmits driving force during high-load low-speed rotation, and also switches high-load low-speed rotation. The present invention relates to a load-sensitive automatic transmission with less noise and impact and a hoisting machine incorporating the load-sensitive automatic transmission.

  For manual chain blocks, the reduction ratio is determined based on the maximum load that the load chain can lift and the maximum pulling force that an operator can apply to the hand chain. Since the load chain operates at a ratio, the work efficiency is extremely poor.

  In order to solve this problem, a gearbox is built in between the hand chain (input side) and the load chain (output side) of the hoist so that the winding speed of the load chain is increased at no load. An upper machine has been developed.

The hoisting machine with the built-in transmission is transmitted to the first clutch means for transmitting the rotational torque from the handwheel to the drive shaft at a 1: 1 rotation ratio, and to the speed increasing transmission for increasing the winding speed. A second clutch means; a transmission plate for engaging and disengaging the first clutch means and the second clutch means; and when the handwheel is rotated when a load is applied to the load sheave, the first clutch means The transmission plate moves in the direction of engaging and releasing the second clutch means, the winding speed is switched from high speed to low speed, and the second clutch is engaged when no load is applied to increase the winding speed. It is equipped with a device. [Patent Document 1]
The automatic transmission device for a hoist described in Patent Document 1 described above transmits the rotational torque from the handwheel to the drive shaft at a one-to-one rotation ratio and to the speed increasing transmission. A second clutch means and a transmission plate for switching between the first and second clutch means are provided, and the transmission plate is slid during switching to mechanically switch the clutch means.
JP 2001-146391 A

  The automatic transmission of the hoist described in Patent Document 1 includes two clutch mechanisms and enables high-speed hoisting when there is no load, but is a contact-type switching that mechanically slides the transmission plate. Because of this method, there was a problem that the internal resistance during switching was large and the operability was poor.

  The present invention solves the above-described problem, and it is not necessary for the operator to perform a complicated shifting operation every time the load state changes. Provides a load-sensitive automatic transmission that can smoothly transmit power between output rotating members, reduce shock and noise during switching, and further reduce the offset of the handwheel and load chain of the hoist It is an object of the present invention to provide a hoisting machine incorporating a load-sensitive automatic transmission that can be reduced in size to improve the balance of the hoisting machine main body and can be reduced in size and weight so as to suppress vibration during operation.

In order to solve the above problems, the present invention is a clutch device including an output rotating means that is displaced between a low load transmission position and a high load transmission position according to the size of an external load,
A low-speed input rotating member having an outer magnetic body for transmitting a high load;
A high-speed input rotating member having an inner magnetic body that is connected to the low-speed input rotating member via a rotation speed increasing device and transmits a low load;
The position switching means acting according to the magnitude of the external load is displaced in the axial direction of the rotating shafts of both rotating members, and magnetically contacts either the low-speed input rotating member or the high-speed input rotating member. It has an intermediate magnetic body to be engaged, and includes an output rotating member that switches between low load high speed rotation and high load low speed rotation,
The low-speed side input rotation member is a low-speed transmission disk fixedly contacted to the side surface of the outer magnetic body;
In conjunction with the movement of the output rotating member to a position where it is magnetically engaged with the low-speed input rotating member,
Apart from the outer magnetic body is pushed to the output rotary member, after said intermediate magnetic member is engaged with the magnetically outer magnetic, provided in the intermediate magnetic member for engaging the magnetically outer magnetic A torque transmitting disk that is attracted to the magnet and mechanically engaged with the output rotating member;
The output rotation member has a convex portion that engages with the torque transmission disk of the low-speed side input rotation member, and can be magnetically engaged with either the outer magnetic body or the inner magnetic body on an intermediate magnetic body. Having outer and inner connecting parts,
The torque transmission disc is engaged with the output rotating member after the intermediate magnetic body of the output rotating member faces and magnetically engages the outer magnetic body of the low-speed input rotating member.

Further, the low-speed side input rotation member is provided on a side surface of the outer magnetic body, and a low-speed transmission disk having a fitting convex part to be fitted to the torque transmission disk,
Having a torque transmission disk made of a magnetic material having a groove to be fitted to the convex part of the low-speed disk;
The convex portion of the output rotating member is engaged with the groove side surface of the torque transmitting disc after the outer coupling portion of the intermediate magnetic body faces the outer magnetic body.

In addition, the hoisting machine has a load-sensitive automatic transmission built in between the handwheel of the hoisting machine and the driving member of the mechanical brake,
A low-speed input rotating member having an outer magnetic body connected to the handwheel and transmitting a high load;
A high-speed input rotating member having an inner magnetic body that is connected to the low-speed input rotating member via a rotation speed increasing device and transmits a low load;
The position switching means acting according to the magnitude of the external load is displaced in the axial direction of the rotating shafts of both rotating members, and magnetically contacts either the low-speed input rotating member or the high-speed input rotating member. It has an intermediate magnetic body to be engaged, and includes an output rotating member that switches between low load high speed rotation and high load low speed rotation,
The low-speed side input rotating member includes an outer magnetic body connected to a handwheel, a low-speed transmission disc fixedly connected to a side surface of the outer magnetic body,
In conjunction with the movement of the output rotating member to a position where it is magnetically engaged with the low-speed input rotating member,
Apart from the outer magnetic body is pushed to the output rotary member, after said intermediate magnetic member is engaged with the magnetically outer magnetic, provided in the intermediate magnetic member for engaging the magnetically outer magnetic A torque transmitting disk that is attracted to the magnet and mechanically engaged with the output rotating means;
The output rotation member has a convex portion that engages with the torque transmission disk of the low-speed side input rotation member, and can be magnetically engaged with either the outer magnetic body or the inner magnetic body on an intermediate magnetic body. Having outer and inner connecting parts,
The torque transmission disc is engaged with the output rotating member after the intermediate magnetic body of the output rotating member faces and magnetically engages the outer magnetic body of the low-speed input rotating member.

Further, the low-speed side input rotation member is provided on a side surface of the outer magnetic body, and a low-speed transmission disk having a fitting convex part to be fitted to the torque transmission disk,
It consists of a torque transmission disk made of a magnetic material having a groove that fits with the convex part of the low-speed disk,
The convex portion of the output rotating member is engaged with the groove side surface of the torque transmitting disc after the outer coupling portion of the intermediate magnetic body faces the outer magnetic body.

Further, provided on the end face of the input tube connected to outer magnetic handwheel, rotatably journalled, receives the output transmitting means pre-Symbol input tube to the inner periphery of the outer peripheral frame which is fixedly connected to the hoist The shaft is rotatably supported on the inner periphery of the tube, and the rotation center of the input tube and the output transmission output stage is provided on the same axis as the drive shaft of the hoisting machine.

  Further, the rotation speed increasing device is a planetary gear mechanism, and the handwheel is connected to a low speed side input rotation member via a planetary carrier of the planetary gear mechanism.

  The hoisting machine incorporating the load-sensitive automatic transmission and the load-sensitive automatic transmission of the present invention realizes switching of power transmission by a non-contact rotary thrust conversion mechanism using magnetism. Since the mechanical contact is limited to the engagement means provided between the gear, the low-speed rotation member, and the output rotation member, a smooth switching operation is possible, and the operator can change the complicated speed change whenever the load state changes. There is no need to perform any operation.

  Further, a mechanical engagement means is provided between the output rotating member and the low speed side input rotating member, and the engaging portion of the low speed side input rotating member is an operation in which the output rotating member is displaced to the high load low speed rotating position. The output rotating member is opposed to the low speed side input rotating member after the intermediate magnetic body is magnetically engaged with the outer magnetic body, and then the output rotating member and the low speed side are moved. Since the engaging portion of the input rotating member is engaged and torque is transmitted between the output rotating member and the low speed side input rotating member, even a large torque can be reliably transmitted.

  Further, if the engaging portion of the output rotating member and the low speed input rotating member is engaged prior to the operation in which the outer magnetic body on the input side and the intermediate magnetic body on the output side face each other, impact and noise are generated at the time of meshing. According to the present invention, since the engaging portion is engaged after the intermediate magnetic body faces the outer magnetic body, the mechanical contact at the time of clutch switching is small, and the generation of impact and noise can be surely reduced. In addition, the magnetic force is not increased, and there is no possibility of increasing the size of the entire apparatus. Therefore, there is no risk of increasing the size of the entire apparatus, and there is an effect that torque can be transmitted satisfactorily.

  In addition, the transmission means that transmits power from the handwheel, which is a power input means, to the magnetic load-sensitive transmission is an input pipe, and the magnetic load-sensitive transmission is built in the input pipe. The output means of the load-sensitive transmission can be arranged in the same direction in the axial direction of the magnetic load-sensitive transmission, and can be arranged in the immediate vicinity of the side surface of the main body frame of the hoisting machine. Can be reduced in size, and even if a chain wound around a handwheel is operated, the amount of deflection of the main body can be suppressed, and the operability can be improved.

  Embodiments of a hoisting machine equipped with a load-sensitive automatic transmission according to the present invention will be described below with reference to the drawings.

1 is a side sectional view of a hoist according to the present invention, FIG. 2 is a side sectional view of a load-sensitive automatic transmission, FIG. 3 is an enlarged schematic diagram of the automatic transmission, FIG. 4 is an intermediate magnetic body, and an outer U-shape. FIG. 5 is a schematic diagram showing a magnetic body, a low-speed transmission disc, and a torque transmission disc, and FIGS. 5A to 5D are explanatory diagrams showing a switching operation of a low-speed side input rotary member, a high-speed side input rotary member, and an output rotary member. 6 is a front sectional view of the load-sensitive automatic transmission during low-load high-speed rotation, FIG. 7 is a front-sectional view of the load-sensitive automatic transmission during high-load low-speed rotation, and FIG. FIG. 9B is a cross-sectional view in the circumferential direction, FIG. 9A is a cross-sectional view of the magnetic clutch mechanism, FIG. 10B is a cross-sectional view in the circumferential direction, and FIG. 10 shows another embodiment of the present invention. FIG. 11 is an enlarged schematic view of an automatic transmission device according to another embodiment.
[Embodiment 1]
DESCRIPTION OF EMBODIMENTS Embodiments of a load-sensitive automatic transmission of the present invention and a hoisting machine incorporating the transmission are described with reference to FIGS.
In the figure, 1 is a main body frame provided with a load sheave and a reduction gear bearing, 2 is a load sheave rotatably supported between the main body frames 1.1, and winds up and lowers a load chain (not shown), and 2a is a load sheave. A load gear 3 is attached to the hollow shaft 2, and a drive shaft 3 is rotatably inserted in an insertion hole of the load sheave 2. A pinion 3 a is provided at one end and a male screw 3 b is provided at the other end. Reference numeral 4 denotes a handwheel on which a link chain is hung, and is rotatably supported on the outer peripheral frame 25. Reference numeral 5 denotes a pressure-receiving member that is non-rotatably attached to the drive shaft 3. A pair of brake plates 7a and 7b and a reverse rotation preventing claw wheel 8 sandwiched between the brake plates 7a and 7b are rotatable on the boss portion 5a. It is exterior. Reference numeral 6 denotes a reduction gear (large) that meshes with the pinion 3a of the drive shaft 3 and is coaxially mounted with a reduction gear (not shown) that meshes with the load gear 2a. The load sheave 2 reduces the rotation of the drive shaft 3 To communicate. A drive member 9 has a female screw 9a and is screwed into the male screw 3b of the drive shaft 3. By rotating forward, the pressure receiving member 5 is pressed through the brake plates 7a and 7b and the reverse rotation preventing wheel 8. The rotation of the drive member 9 is configured to be transmitted to the drive shaft 3, and by reversing, the slide with the reverse direction of the pressing direction is released and the engagement with the reverse rotation preventing claw wheel 8 is released. ) Is configured to enable the mechanical brake.

  10 is a clutch plate, 10a is a connecting hole for connecting the output disk 30 and the clutch plate 10 to be described later, 11a and 11b are friction plates for fitting both sides of the clutch plate 10, 12 is a clutch presser, 13a is a pressing spring, 13b Is a torque setting nut, and the clutch plate 10 to the torque setting nut 13b constitutes a friction clutch means, and is interposed between the drive member 9 and a transmission described later so as to transmit power.

  By providing the friction clutch means, it is possible to prevent the friction clutch from slipping and applying a load exceeding a predetermined torque to the automatic transmission even if the lifting weight is exceeded, and to prevent the transmission from being broken. . The torque value of the friction clutch is appropriately set by adjusting the spring force of the pressing spring 13a to a predetermined value with the torque setting nut 13b.

  In the present embodiment, the friction clutch means described above is provided between the output disk 30 and the drive member 9 of the transmission to be described later. However, the output disk 30 can be directly connected to the drive member.

The load sensitive automatic transmission of the present invention will be described below.
Reference numeral 14 denotes an input pipe which is a hollow input shaft connected to the handwheel 4 and rotatably supported by an outer peripheral frame 25 which will be described later, and 15 is inscribed in the outer peripheral frame 25 via a bearing 37e. An outer U-shaped magnetic body made of a U-shaped magnetic body that is supported by the end face of the input tube 14 and opens to the inside in the circumferential direction and rotates a planetary carrier 22 described later via the low-speed transmission disk 16. The tooth portion 15a faces the outer tooth portion 19a (outer connecting portion) of the intermediate magnetic body 19 to be described later.

  Reference numeral 16 denotes a low-speed transmission disk fixed to one side of the outer U-shaped magnetic body 15, which is integrally fixed to the outer periphery of the planetary carrier 22, and the planetary carrier 22 and the input tube 14 rotate integrally. . 16a projects forward from the front surface of the low-speed transmission disk 16 and is fitted into the fitting hole 17a of the torque transmission disk 17, 16b is a gap formed between the convex parts, and 17 is a low speed. A torque transmission disc having a fitting hole 17a into which the fitting convex portion 16a of the transmission disc 16 is fitted, and is normally attracted by a magnet 21 provided in an intermediate magnetic body 19 to be described later and joined to the low-speed transmission disc 16. The intermediate magnetic body 19 moves away from the outer U-shaped magnetic body 15 and the low-speed transmission disk 16 in conjunction with the movement of the intermediate magnetic body 19 to the outer U-shaped magnetic body 15 side. The torque transmission circle for transmitting the rotation of the input tube 14 to the output rotation member by engaging the convex portion of the intermediate magnetic body 19 and the side surface of the fitting hole 17a of the torque transmission disc 17 after facing the cylindrical magnetic body 15. It is a board.

  The outer U-shaped magnetic body 15, the low speed transmission disk 16, and the torque transmission disk 17 constitute a low speed side input rotating member.

  Reference numeral 19 denotes an outer tooth 19a (outer connecting portion) having a U-shaped cross-section facing the outer U-shaped magnetic body 15 and a tooth portion of the inner U-shaped magnetic body 28 described later. The intermediate magnetic body 19 is provided with inner teeth 19b (inner coupling portions) opposite to each other, and an end face of the intermediate magnetic body 19 is provided with a convex portion 20 that is inserted into and engaged with the fitting hole 17a of the torque transmission disc 17. ing.

  The intermediate magnetic body 19, the convex portion 20, and the magnet 21 constitute an output rotating member.

When the intermediate magnetic body 19 to be described later is displaced to a position facing the outer U-shaped magnetic body 15, the torque transmission disk 17 presses the back surface of the torque transmission disk 17. As a result, it slides in a direction away from the outer U-shaped magnetic body 15 and the low-speed transmission disk 16. The length of the fitting convex portion of the low speed transmission disk 16 is such that the torque transmission disk 17 is detached from the low speed transmission disk 16 when the intermediate magnetic body 19 is displaced to a position facing the outer U-shaped magnetic body. In order not to prevent it, it is set to be equal to or slightly longer than the displacement length of the intermediate magnetic body 19.
As shown in FIGS. 5A to 5D, the intermediate magnetic body 19 can face either the outer U-shaped magnetic body 15 or the inner U-shaped magnetic body 28. Is configured to face the outer U-shaped magnetic body 15 when moved 1/2 pitch to the right in the axial direction, and to face the inner U-shaped magnetic body 28 when moved 1/2 pitch to the left in the axial direction. . 21 is a magnet for connecting a magnetic body provided between the intermediate magnetic bodies, and is arranged so that one of the pair of intermediate magnetic bodies is an N pole and the other is an S pole. It arrange | positions so that either one of the shape-like magnetic bodies 28 may be opposed. The tooth portions of the outer teeth 19a and the inner teeth 19b of the intermediate magnetic body 19 protrude outward and inward from the magnet 21, respectively, and the tooth portions 15a and 28a of the outer U-shaped magnetic body 15 and the inner U-shaped magnetic body 28. And the number of teeth are the same and are arranged at equal intervals.

  Reference numeral 22 denotes a planetary carrier integrally fixedly connected to the low-speed transmission disk 16; 23, a planetary gear mounted on the planetary carrier 22 by a connecting shaft 18; and 24, the other supporting one end of the connecting shaft 18. Is a planetary carrier. The planetary gear 23 meshes with a sun gear 29a provided on a sun gear shaft 29, which will be described later, and the shaft core rotates around the sun gear 29a, and internally meshes with an outer gear 26 provided on an outer gear support frame 27, which will be described later. It is configured as follows. Reference numeral 25 denotes an outer peripheral frame in which a flange 25a is fixed to the hoisting machine main body, and an outer gear support frame 27 is fixed to one end, and an opening of the outer gear support frame 27 fixed to an end of the outer peripheral frame 25 is provided. Is provided with an outer gear 26 constituting a planetary gear device. 29 is a bearing 37a provided on the planetary carrier 24; a bearing 37c provided on the inner periphery of the planetary carrier 22; and a bearing 37d provided on a hollow shaft 31 provided on the inner periphery of the output disk 30 described later. A sun gear shaft 29 a supported by 37 d is a sun gear provided at the tip of the sun gear shaft 29. As described above, the sun gear 29a meshes with the planetary gear 23 to constitute speed increasing means. 28 is an inner core made of a U-shaped magnetic body, which is disposed on the sun gear shaft 29 at equal intervals on the concentric circumference with the axis of the shaft, and is fixed to rotate integrally with the shaft 29. As shown in the figure, it is a letter-shaped magnetic body, and has a tooth portion 28a facing the inner tooth portion 19b of the intermediate magnetic body 19 to be described later and a shaft fixing portion 28b fixed to the sun gear shaft. 30 is an output disk which is an output transmission means which is connected to the drive member 9 via the clutch plate 10 by the connecting means 30a so as to be able to transmit power, and is supported on the outer periphery by a bearing 37f provided on the inner periphery of the input pipe 14. Reference numeral 31 denotes a hollow shaft extending from the output disc 30 toward the high torque transmission member support plate 35 described later. An output tube 32 is arranged on the outer periphery of the hollow shaft 31 so as to be rotatable and slidable. The output tube 32 has an intermediate disk 33 having a load-sensitive position switching means at one end and an intermediate magnetic body 19 at the other end. The hollow shaft 31 is fitted by a hollow shaft 33a provided on the inner periphery of the intermediate disk.

  34 is a high torque transmission member, one end of which is fixed to the output disk 30 and fitted into a torque transmission hole 33a provided in the intermediate disk 33, and connects the intermediate disk 33 and the output disk 30 so as to be able to transmit power. Reference numeral 34 a denotes a high torque transmission member support plate for fixing the other end of the high torque transmission member 28. 35 is a magnet provided on the intermediate disk 33, 36 a is a magnet for moving the intermediate disk 33 provided on the output disk 30, and 36 b is disposed on both sides of the magnet for moving the intermediate disk 33, and is returned to the intermediate disk 33. It is a magnet that gives power. The magnets 35 and 36a, 36b are arranged opposite to each other and having different phases and polarities, and when a certain torque or more is applied between the output disc 30 and the intermediate disc 33, the output disc 30 The intermediate disk 33 is relatively displaced by a predetermined angle, the tip of the magnet 36a of the output disk 30 moves to the tip of the magnet 35 of the intermediate disk 33, and both magnets are repelled because the same poles face each other. The intermediate disk 33 is slid and moved in the axial direction by the repulsive force. Accordingly, when a force greater than a predetermined torque is applied between the intermediate disk 33 and the output disk 30, the relative positions of both disks move, and when the torque decreases, both of the magnets 35 and 35 return to their original positions. They are magnetically coupled via 36a and 36b to constitute load sensitive position switching means.

  Next, switching operation between the low load high speed rotation and the high load low speed rotation of the automatic transmission will be described.

  As shown in FIG. 8, the intermediate disc 33 provided at the end of the output tube 32 is provided with a permanent magnet M1 (35), and the output disc 30 serving as output transmission means moves to the intermediate disc 33. Magnet spring magnets MOB (36b) for applying a return force to the intermediate disc 33 are arranged on both sides of the magnet MOA (36a) and the intermediate disc moving MOA (36a). When the load torque is initially small, the different poles of the magnet M1 disposed on the intermediate disk 33 and the magnet MOA disposed on the output disk 30 are attracted to face each other. For this reason, a thrust is generated in a direction in which the intermediate disk 33 approaches the output disk 30, and the intermediate disk 33 is connected to the inner U-shaped magnetic body 28 side that slides in the axial direction and rotates at high speed with the sun gear 24. The transmission operates in the high speed mode shown in FIG. During this operation, the intermediate magnetic body 19 slides to a position facing the inner U-shaped magnetic body 28, and both the magnetic bodies are magnetically coupled by the magnet 21 provided on the intermediate magnetic body 19, so that the inner teeth of the intermediate magnetic body 19 are 29b opposes and is magnetically coupled to the tooth portion 28a of the inner U-shaped magnetic body 28, and operates in a high speed mode. In this state, this position is maintained until a force that moves in the axial direction greater than or equal to a predetermined value acts between the intermediate disk 33 and the output disk 30. At this time, the south pole of the magnet M1 (35) provided on the intermediate disk 33 faces the south pole of the magnetic spring magnet MOB (36b), and the north pole of the magnet M1 is the north pole of the magnetic spring magnet MOB ′. Therefore, in a state where the magnet M1 is attracted to the intermediate disk moving magnet MOA, the predetermined position is held by the magnetic spring action due to the repulsive force that the magnet M1 receives from both sides.

  Next, when the load torque increases, a torsional force is generated in the magnetic spring element that couples the intermediate disk 33 and the output disk 30, and when the force exceeds the holding force of the magnetic spring, the two disks rotate relative to each other. To do. As a result, the positional relationship of the magnets changes, the magnet M1 of the intermediate disk 33 moves to the intermediate disk moving magnet side MOA side, and since the same poles of both magnets face each other, they repel each other, and the intermediate disk 33 The intermediate magnetic body 19 is linearly slid to a position facing the outer U-shaped magnetic body 15 provided in the input tube 10 and displaced.

  During this displacement operation, if the intermediate magnetic body 19 as the output rotating member moves from the low-load high-speed rotation position in FIG. 5A to the outer U-shaped magnetic body 15 side in FIG. When the convex portion 20 provided on the end face 19 pushes the back surface of the torque transmission disk 17 and further moves, the torque transmission disk 17 resists the attracting force of the magnet 21 as shown in FIG. Thus, it is separated from the outer U-shaped magnetic body 1 along the convex portion 16 a of the low-speed transmission disk 16. When the tooth portion 15a of the outer U-shaped magnetic body 15 and the outer tooth 19a of the intermediate magnetic body 19 coincide with each other in the rotational direction, the convex portion 20 can be fitted into the fitting hole 17a of the torque transmitting disc 17, and the The convex portion 20 abuts against the back surface of the torque transmission disc 17 and pushes it. Next, when the intermediate magnetic body 19 is slightly rotated after facing the outer U-shaped magnetic body 15, the engagement between the back surface of the torque transmission disc 17 and the convex portion 20 of the intermediate magnetic body 19 is released, and the torque transmission disc is released. 19 is attracted by the magnet 21, and the torque transmission disk 17 is joined to the low speed transmission disk 16 as shown in FIG. 5D, and the side surface of the fitting hole 17 a of the torque transmission disk 17 and the intermediate magnetic body 19 are joined. The provided convex portion 20 is engaged, and the low-speed side input rotating member and the output rotating member are mechanically coupled smoothly.

  Prior to the operation in which the outer U-shaped magnetic body 15 of the low-speed input member and the intermediate magnetic body 19 of the output rotary member face each other during the mechanical coupling operation of the low-speed side input rotary member and the output rotary member, When the mechanical engaging portion of the side input rotating member is engaged, impact and noise due to meshing occur, but in the present invention, the intermediate magnetic body 19 precedes the operation of facing the outer U-shaped magnetic body 15. Then, after the convex portion 20 provided on the intermediate magnetic body 19 pushes the torque transmission disc 17 of the low-speed side rotating member away from the intermediate magnetic body 19 and the outer U-shaped magnetic body 15 faces, the intermediate magnetic body Since the convex part 20 provided in 19 is configured to engage with the torque transmission disk 17, mechanical contact at the time of clutch switching can be minimized, and the generation of impact and noise can be surely reduced.

  As described above, in the load-type automatic transmission according to the present embodiment, the intermediate magnetic body 19 is connected to the inner U-shaped magnetic body 28 as shown in FIG. Rotation of the input pipe 10 connected to 4 is accelerated by the planetary gear 23 and the sun gear 24 a meshing with the planetary gear 23, and the sun gear shaft 29 is rotated at an increased speed. The teeth 28a of the letter-shaped magnetic body 28 and the inner teeth 19b of the intermediate magnetic body 19 are opposed and magnetically coupled, the intermediate magnetic body 19 and the output tube 32 rotate at high speed, and the connecting means 30a provided on the output disk 30 is connected. The clutch plate 10 connected to the drive member 9 of the hoisting machine is rotated at high speed.

  At the time of high load and low speed rotation, as shown in FIG. 5 (d), the intermediate magnetic body 19 is connected to the outer U-shaped magnetic body 15 provided in the input tube 10, and the teeth 15 a of the outer U-shaped magnetic body 15 are connected. The outer teeth 19 a of the intermediate magnetic body 19 are magnetically engaged, and the output tube 32 rotates at the same speed as the input tube 10. During this operation, even if a load greater than the magnetic coupling between the intermediate disk 33 provided on the output pipe 32 and the output disk 30 is applied, the high torque transmission member 34 is attached to the end of the torque transmission hole 33a as shown in FIG. Because of the contact, the rotation of the output pipe 32 causes the output disk 30 to rotate at a low speed via the high torque transmission member 34 and is connected to the drive member 9 of the hoisting machine via the connecting means 30 a provided on the output disk 30. The clutch plate 10 is rotated at a low speed.

When the drive member 9 rotates at a high speed or a low speed, the drive member 9 presses the brake plates 7 a and 7 b and the ratchet wheel 8 against the pressure receiving member 5, rotates the drive shaft 3 via the pressure receiving member 5, and ends the drive shaft 3. The load sheave 2 is rotated through a load gear 2a that meshes with a reduction gear 6 that meshes with a pinion gear 3a provided in the section.
[Embodiment 2]

  Hereinafter, other embodiments of the hoisting machine incorporating the load-sensitive automatic transmission of the present invention will be described with reference to FIGS.

  The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the first embodiment, the low-speed side input rotating member includes an outer magnetic body 15 provided on the end face of the input tube 14 connected to the handwheel 4 and a low-speed transmission circle fixed on the side surface of the outer magnetic body 15. The plate 16 and a magnetic body having a fitting hole 17a to be fitted to the convex portion of the low-speed transmission disc 16 are constituted by the torque transmission disc 17 to be engaged with the convex portion of the intermediate magnetic body 19. The planetary carrier 22 has a connecting shaft 18 that is integrally fixed to the inner periphery of the low-speed transmission disk 16 and supports the planetary gear 23.

In this embodiment, as shown in FIGS. 10 and 11, the handwheel 4a is provided on the opposite side of the load sheave 2 with the transmission in between, and the planetary carrier 22a is fixed to the handwheel 4a. The planetary carrier 22a is pivotally supported on the outer peripheral frame 25 by a bearing 37g, and the planetary carrier 22a is coupled to the planetary carrier 22b by a connecting shaft 18a and fixed to the outer periphery of the planetary carrier 22b. The low-speed transmission disk 16 is connected to be able to transmit power.

  10 and 11, the outer U-shaped magnetic body 15, the low-speed transmission disc 16, the convex portion 16 a, the torque transmission disc 17, the fitting hole 17 a, the intermediate magnetic body 19, the convex portion 20, and the inner U-shaped magnetic body. 28, the sun gear shaft 29, the output disk 30, the output tube 32, the intermediate disk 33, and other configurations are the same as those in the first embodiment.

  11c of FIG. 11 is an input shaft fixed to the planetary carrier 22a. The rotational force applied to the input shaft 22c is transmitted to the low-speed transmission disk 16 and the outer U-shaped magnetic body 15 through the planetary carriers 22a and 22b, and is promoted and transmitted through the planetary gear 23 and the sun gear 29a. It is transmitted to the U-shaped magnetic body 28.

  In the present embodiment, the planetary carrier 22a is connected to the handwheel 4a, and the rotation of the handwheel 4a rotates the planetary carrier 22a fixed to the handwheel 4a and is connected to the planetary carrier 22a by the connecting shaft 18. The planetary carrier 22b and the low-speed transmission disk 16 fixed to the outer periphery of the planetary carrier 22b are rotated. As in the first embodiment, during high-load and low-speed rotation, the intermediate magnetic body 19 is connected to the outer U-shaped magnetic body 15, and the rotation of the planetary carrier 22 a connected to the handwheel 4 a The intermediate magnetic body 19 is rotated at a low speed via the U-shaped magnetic body 15, and the clutch plate 10 connected to the drive member 9 of the hoisting machine is rotated at a low speed via a connecting means 30 a provided on the output disk 30.

  Similarly to the first embodiment, prior to the operation in which the intermediate magnetic body 19 faces the outer U-shaped magnetic body 15, the convex portion 20 provided on the intermediate magnetic body 19 is a torque transmission circle of the low-speed rotation member. Since the convex portion 20 provided on the intermediate magnetic body 19 is engaged with the torque transmitting disc 17 after the plate 17 is pushed and the intermediate magnetic body 19 and the outer U-shaped magnetic body 15 face each other, the clutch The mechanical contact at the time of switching can be minimized, and the generation of impact and noise can be surely reduced.

Side surface sectional drawing of the winding machine of this invention. 1 is a side sectional view of a load-sensitive automatic transmission according to the present invention. The expansion outline factor of a low speed side input rotation member, a high speed side rotation member, and an output rotation member. The schematic diagram which shows an intermediate | middle magnetic body, an outer U-shaped magnetic body, a low-speed transmission disc, and a torque transmission disc. (A)-(d) is explanatory drawing which shows the switching operation | movement of a low speed side input rotation member, a high speed side input rotation member, and an output rotation member. 1 is a front sectional view of a load-sensitive automatic transmission during low-load high-speed rotation. 1 is a front sectional view of a load-sensitive automatic transmission during high load and low speed rotation. (A) is structure explanatory drawing of a thrust conversion mechanism, (b) is sectional drawing. (A) is structure explanatory drawing of a magnetic clutch mechanism, (b) is sectional drawing. The side view of the winding machine of the other form of this invention. The expansion schematic diagram of a low speed side input rotation member, a high speed side rotation member, and an output rotation member.

Explanation of symbols

2 Load sheave 3 Drive shaft 4, 4a Hand wheel 5 Pressure receiving member 7a, 7b Brake plate 8 Claw wheel 9 Drive member 14 Input tube 15 Outer U-shaped magnetic body 16 Low speed transmission disc 16a Convex portion 17 Torque transmission disc 17a Joint hole 19 Intermediate magnetic body 20 Protrusions 22, 22a, 22b Planetary carrier 25 Outer frame 28 Inner U-shaped magnetic body 29 Sun gear shaft 30 Output disk 31 Hollow shaft 32 Output tube 33 Intermediate disk 34 High torque transmission member

Claims (6)

A clutch device comprising output rotating means that is displaced between a low load transmission position and a high load transmission position according to the magnitude of an external load,
A low-speed input rotating member having an outer magnetic body for transmitting a high load;
A high-speed input rotating member having an inner magnetic body that is connected to the low-speed input rotating member via a rotation speed increasing device and transmits a low load;
The position switching means acting according to the magnitude of the external load is displaced in the axial direction of the rotating shafts of both rotating members, and magnetically contacts either the low-speed input rotating member or the high-speed input rotating member. It has an intermediate magnetic body to be engaged, and includes an output rotating member that switches between low load high speed rotation and high load low speed rotation,
The low-speed side input rotation member is a low-speed transmission disk fixedly contacted to the side surface of the outer magnetic body;
In conjunction with the movement of the output rotating member to a position where it is magnetically engaged with the low-speed input rotating member,
Apart from the outer magnetic body is pushed to the output rotary member, after said intermediate magnetic member is engaged with the magnetically outer magnetic, provided in the intermediate magnetic member for engaging the magnetically outer magnetic A torque transmitting disk that is attracted to the magnet and mechanically engaged with the output rotating member;
The output rotation member has a convex portion that engages with the torque transmission disk of the low-speed side input rotation member, and can be magnetically engaged with either the outer magnetic body or the inner magnetic body on an intermediate magnetic body. Having outer and inner connecting parts,
The torque transmitting disk is configured to be loaded sensitive after the intermediate magnetic body of the output rotating member is opposed to and magnetically engaged with the outer magnetic body of the low-speed input rotating member. Type automatic transmission. The low speed side input rotating member is provided on a side surface of the outer magnetic body, and a low speed transmission disk having a fitting convex part to be fitted to the torque transmission disk,
Having a torque transmission disk made of a magnetic material having a groove to be fitted to the convex part of the low-speed disk;
2. The load-sensitive automatic transmission according to claim 1, wherein the convex portion of the output rotating member is engaged with the groove side surface of the torque transmitting disc after the outer coupling portion of the intermediate magnetic body faces the outer magnetic body. A hoisting machine incorporating a load-sensitive automatic transmission between a handwheel of a hoisting machine and a drive member of a mechanical brake,
A low-speed input rotating member having an outer magnetic body connected to the handwheel and transmitting a high load;
A high-speed input rotating member having an inner magnetic body that is connected to the low-speed input rotating member via a rotation speed increasing device and transmits a low load;
The position switching means acting according to the magnitude of the external load is displaced in the axial direction of the rotating shafts of both rotating members, and magnetically contacts either the low-speed input rotating member or the high-speed input rotating member. It has an intermediate magnetic body to be engaged, and includes an output rotating member that switches between low load high speed rotation and high load low speed rotation,
The low-speed side input rotating member includes an outer magnetic body connected to a handwheel, a low-speed transmission disc fixedly connected to a side surface of the outer magnetic body,
In conjunction with the movement of the output rotating member to a position where it is magnetically engaged with the low-speed input rotating member,
Apart from the outer magnetic body is pushed to the output rotary member, after said intermediate magnetic member is engaged with the magnetically outer magnetic, provided in the intermediate magnetic member for engaging the magnetically outer magnetic A torque transmitting disk that is attracted to the magnet and mechanically engaged with the output rotating means;
The output rotation member has a convex portion that engages with the torque transmission disk of the low-speed side input rotation member, and can be magnetically engaged with either the outer magnetic body or the inner magnetic body on an intermediate magnetic body. Having outer and inner connecting parts,
The torque transmitting disk is configured to be loaded sensitive after the intermediate magnetic body of the output rotating member is opposed to and magnetically engaged with the outer magnetic body of the low-speed input rotating member. Hoisting machine with built-in automatic transmission. The low speed side input rotating member is provided on a side surface of the outer magnetic body, and a low speed transmission disk having a fitting convex part to be fitted to the torque transmission disk,
It consists of a torque transmission disk made of a magnetic material having a groove that fits with the convex part of the low-speed disk,
4. The load-sensitive automatic transmission according to claim 3, wherein the convex portion of the output rotating member is engaged with the groove side surface of the torque transmitting disc after the outer coupling portion of the intermediate magnetic body faces the outer magnetic body. Built-in hoisting machine. Provided outer magnetic on the end face of the input tube connected to the hand wheel, before Symbol rotatably journalled on the inner periphery of the outer peripheral frame which is fixedly connected to the hoist input tube, the input tube the output transmission means The load according to claim 3 or 4, wherein a shaft is rotatably supported on the inner periphery, and a rotation center of the input pipe and the output transmission output stage is provided on the same axis as the drive shaft of the hoisting machine. Hoisting machine with built-in sensitive automatic transmission.   4. The load sensitive type according to claim 3, wherein the rotation speed increasing device is a planetary gear mechanism, and the handwheel is connected to a low speed side input rotation member via a planetary carrier of the planetary gear mechanism. Hoisting machine with built-in automatic transmission.

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