JP2013095391A - Cooling mechanism of driving shaft connecting part of cableway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling mechanism of a driving shaft connecting part for cooling especially an input shaft of a reduction gear in a motive power device for driving a cableway.SOLUTION: In a motive power tension device 1 of the cableway, by a universal joint 40 connecting an output shaft 6a of an electric motor 6 and the input shaft 9a of the reduction gear 9, a cooling fan 30 is inserted into the input shaft 9a of the reduction gear 9 in series with a yoke joint 27 fixing a flange 22b of a cross kit 21b on the reduction gear 9 side with bolts 24. When the electric motor 6 is rotated, the cooling fan 30 is rotated, and the input shaft 9a of the reduction gear 9 is cooled.

Description

  The present invention is a cableway motive device for driving and driving a rope around a pulley in a cableway facility in which a carrier is bitely suspended from the rope and the carrier is operated as the rope moves. An electric motor that supplies driving force, and a driving device that drives the pulley on which the strip is wound by reducing the rotational speed of the driving force of the electric motor via the speed reducer, and connecting the motor and the speed reducer The present invention relates to a cooling mechanism of a driving shaft connecting portion incorporated in the portion.

  As shown in FIG. 6, the conventional prime mover 100 for circulating and moving the rope 101 in which the carrying device (not shown) is suspended by the grasping device in the cableway facility is a column erected on the stop. An electric motor 103 and a speed reducer 105 are arranged in series in a line direction on a driving frame 102 that is horizontally bridged between 121 and 122, and a universal joint 110 is connected to an output shaft of the motor 103 and an input shaft of the speed reducer 105. Connect through. A brake disc 109 is fixed on the same axis on the input shaft of the speed reducer 105, and a brake 104 acting on the brake disc 109 is provided. Next, the driving pulley 106 is fitted in the horizontal direction on the shaft end portion of the output shaft 105b of the speed reducer 105, and the rope 101 is hooked. An annular smooth disk surface 106a is formed on both upper and lower surfaces of the driving pulley 106, and another brake 107 is mounted on the lower surface side of the driving frame 102. The disk surface 106a of the driving pulley 106 is attached to the driving pulley 106. By biting in the vertical direction, the rotation of the driving pulley 106 is braked, and the rope 101, that is, the carrying device is braked.

  Next, when resuming the operation of the vehicle that has been braked, when the driver presses an activation push button (not shown) provided on the operation panel at the stop, the speed reducer with which the service brake 104 is biting. At the same time that the brake disc 109 provided coaxially with the input shaft 105 is released, the electric motor 103 starts up and rotates at high speed, and is transmitted to the input shaft of the speed reducer 105 via the universal joint 110 and further decelerated. Thus, the driving pulley 106 fitted to the output shaft 105b rotates. In this way, the rope 101 laid around the driving pulley 106 circulates and the transporter is operated. At this time, the moving rope 101 is prevented from being detached from the driving pulley 106 which is guided and supported by the rope receiving devices 108 and 108.

  A universal joint 110 is generally used as a means for transmitting the rotational speed of the electric motor 103 to the speed reducer 105 for reducing the rotational speed of the electric motor 103 to a predetermined carrying speed. FIG. 7 is a partial cross-sectional side view showing in detail a structure in which the output shaft 103a of the electric motor 103 and the input shaft 105a of the speed reducer 105 are connected by the universal joint 110. A yoke joint 111 is inserted into the output shaft 103a of the electric motor 103 shown on the right side of the figure after being stopped with a key 112. At the left end of the yoke joint 111, a cross kit 110a on the right side of the universal joint 110 is coaxially disposed with the output shaft 103a of the electric motor 103 and attached with bolts 113, 113,.

  Subsequently, as shown on the left side of the figure, after the collar 119 and the yoke joint 114 are secured to the input shaft 105a of the speed reducer 105 with the key 120 being inserted in the axial direction, the shaft end plate 116 is attached to the bolt 117. Thus, the yoke joint 114 is secured to the shaft end surface of the input shaft 105a so that the yoke joint 114 does not come out of the input shaft 105a during rotation. Thereafter, the cross kit 110b on the left side of the universal joint 110 shown in the figure is positioned coaxially at the inlay portion of the yoke joint 114, and then fixed to the side end surfaces with bolts 118, 118,. Further, a flange 114a is fixed to the outer periphery of the yoke joint 114, and after the brake disk 109 of the service brake 104 is positioned coaxially in the inlay portion, the bolts 115, 115, ... are fixed evenly in the circumferential direction.

  Thus, the rotational driving force of the electric motor 103 is transmitted from the output shaft 103a to the input shaft 105a of the speed reducer 105 through the universal joint 110. At the same time, the brake disc 109 attached to the yoke joint 114 attached to the input shaft 105 a of the speed reducer 105 also rotates at the same speed as the motor 103. The rotation speed of the electric motor 103 is 1200 to 1800 rotations per minute, and the rotation speed is relatively high, and the bearing of the input shaft 105a connected to the universal joint 110 of the speed reducer 105 rotates at a high speed. Fever. Therefore, when the ambient temperature is high, the deterioration of the lubricating oil is accelerated, or the bearing of the input shaft 105a of the speed reducer 105 is seized. There was a possibility that 100 stopped and the cableway could not be operated.

Japanese Patent Laid-Open No. 2004-217099

  The present invention is a prime mover 100 that operates a cableway carrier as described above, and a primed shaft connecting portion that transmits the rotation of the motor 103 by connecting the output shaft of the motor 103 and the input shaft of the speed reducer 105 with a universal joint 110. Thus, the portion of the input shaft 105a of the speed reducer 105 is cooled to prevent the bearing of the input shaft 105a from being seized. Accordingly, it is an object of the present invention to provide a cooling mechanism for a driving shaft connecting portion of a cableway to prevent the operation of the cableway from being stopped due to a failure of the speed reducer 105 and to improve the safety of the cableway.

  And, in order to achieve the above object, the present invention wraps the cable in the cableway facility in which the cable suspended from the carrier is wound between pulleys pivoted at the stop and circulated to operate the container. A prime mover for rotationally driving a pulley, comprising: an electric motor that constitutes the prime mover; a speed reducer that reduces the rotational speed of the motor; an output shaft of the motor; and an input shaft of the speed reducer And a cooling fan mounted coaxially with the output shaft of the electric motor, the input shaft of the reduction gear, and the rotation shaft of the universal joint. When the electric motor starts rotating, the cooling fan also rotates, and the reduction gear The air is directed toward the input shaft to cool the input shaft portion of the speed reducer.

  Further, a brake disk is provided on the same axis as the rotary shaft with a disk yoke joint interposed between the universal joint and the input shaft of the speed reducer.

  In addition, the outer periphery of the input shaft housing of the speed reducer is rotatably mounted with a preliminary driving V-groove pulley, a bearing retainer, a spline shaft, and a slide block for transmitting the driving force of the preliminary driving device via a bearing. Furthermore, a slide block that slides in the thrust direction of the rotary shaft is attached to the spline shaft, and a connection pin is attached to the periphery of the slide block, and the connection pin is engaged with and disengaged from the brake disk. A preliminary driving mechanism for transmitting the rotation to the input shaft of the speed reducer in an intermittent manner is configured.

  As described above, the cooling mechanism of the driving shaft connecting portion of the cableway of the present invention is on the same axis as the universal joint that connects the output shaft of the electric motor and the input shaft of the speed reducer, and on the input shaft side of the speed reducer. Is equipped with a cooling fan and rotated in synchronism with the rotation of the electric motor, so that air is blown toward the input shaft part of the reducer, the input shaft part is cooled, and the bearing of the input shaft part of the reducer is seized. It is possible to improve the safety of the cableway equipment by preventing the cableway operation from stopping unexpectedly.

  Further, in the case of a cableway provided with a spare prime mover, in order to transmit the rotation of the spare prime mover to the reducer, the spare prime mover V-groove pulley is pivotally connected to the outer periphery of the input shaft housing of the reducer via a bearing. To wear.

  In addition, a sprocket shaft and a slide block that slides the sprocket shaft in the axial direction are attached to the preliminary driving V-groove pulley, and a connection pin is attached to the periphery of the slide block so that it can be freely attached to and detached from the brake desk. Thus, a mechanism for switching between the operation by the electric motor and the operation by the auxiliary prime mover is provided. In this case, since the outer peripheral portion of the input shaft portion of the reduction gear is covered with the bearing and the preliminary driving V-groove pulley, it becomes more difficult for heat to escape, and the input shaft bearing of the reduction device becomes easy to seize. The effect of cooling is further increased.

Side view of cable traction device with cooling mechanism of the present invention 1 is a plan view of the driving tension device of FIG. The side view which shows the cooling mechanism of the drive shaft connection part of Example 1 of this invention. The side view which shows the cooling mechanism of the drive shaft connection part of Example 2 of this invention. Partial enlarged view of the cooling mechanism of FIG. Side view of a conventional tensioning device for a cableway with a primed shaft connection Side view showing the configuration of a conventional driving shaft connecting portion

  According to the first aspect of the present invention, a universal joint is used as a mechanical element for transmitting the rotation of the electric motor to the speed reducer in the cable drive unit, and the yoke joint portion connected to the input shaft side of the speed reducer of the universal joint is used. A cooling fan is installed on the same axis, rotated at the rotational speed of the electric motor, and blown to the input shaft side to cool the bearing.

  According to a second aspect of the present invention, a brake disc for a brake is provided coaxially on a disc yoke joint that is inserted into the input shaft of the speed reducer that is connected to the output shaft of the motor by a universal joint.

  The invention according to claim 3 is a case where the primary drive device is provided in the cable drive device, the preliminary drive V-groove pulley is pivoted by a bearing on the outer periphery of the housing of the input shaft portion of the speed reducer, the rotational driving force of the electric motor, A cooling fan is accommodated in the inner space of the spline shaft that is coaxially fixed to the end of the preliminary driving V-groove pulley for switching transmission of the rotational driving force of the preliminary driving device, The bearing of the input shaft portion is cooled by rotating at a speed and blowing air toward the input shaft portion of the speed reducer.

  FIG. 1 is a side view illustrating an overall configuration of a driving tension device 1 that constitutes a cooling mechanism for a driving shaft connecting portion of the present invention. FIG. 2 shows a plan view of FIG. The driving tension device 1 has a front leg 2 on a foundation 14 constructed on the track side of a stop, and a rear leg 3 on a foundation 15 constructed rearward at a predetermined interval. On the upper surface between the front leg 2 and the rear leg 3, as shown in FIG. 2, a driving tension frame 4 that is framed in a rectangular shape in a line direction in a plan view is installed. A sliding frame 5 is arranged on the prime tension frame 4 so as to be movable in the direction of the arrow 17 or 18. A hydraulic tensioning device 11 using a hydraulic cylinder is attached to the rear leg 3 below the driving tension frame 4 and the tip of the piston rod of the hydraulic cylinder is locked to the sliding frame 5.

  Subsequently, the electric motor 6 and the speed reducer 9 are arranged in series on the upper surface of the sliding frame 5 in the direction of the arrow 16, and then the output shaft 6 a of the motor 6 and the input shaft 9 a of the speed reducer 9 are connected to the universal joint 7. Connect at (20). At that time, a brake disk 28 on which the service brake 8 acts is inserted coaxially on the input shaft 9 a side of the speed reducer 9. Next, a driving pulley 10 having a large diameter in the horizontal direction is attached to the output shaft 9c extending downward from the speed reducer 9. Further, as shown in FIG. 2, the strip 13 is wound around the driving pulley 10 by a half circumference. Further, an emergency brake 12 is provided on the track side of the sliding frame 5 in the direction of the arrow 17 to bite the periphery of the driving pulley 10 and brake the rotation. The above is the schematic configuration of the cable tension driving tension device 1.

  Next, the details of the portion in which the output shaft 6a of the motor 6 and the input shaft 9a of the speed reducer 9 constituting the cooling mechanism are connected by the universal joint 20 to the driving shaft connecting portion according to claim 1 of the present invention shown in FIG. The configuration will be described. A yoke joint 25 is inserted into the output shaft 6a of the electric motor 6 shown on the right side of the figure after being stopped with a key 26. At the left end of the yoke joint 25, a cross kit 21a on the right side of the universal joint 20 is fitted into an inlay portion 25a formed on the yoke joint 25, and is positioned coaxially so that the flange portion 22a is bolts 23, 23, It sticks with.

  Subsequently, as shown on the left side of FIG. 3, the collar 31, the cooling fan 30, and the yoke joint 27 are fixedly attached to the input shaft 9a of the speed reducer 9 in the order described in the thrust direction with the key 32 stopped. After that, the shaft end plate 33 is fixed to the shaft end surface of the input shaft 9a with bolts 34 so that the cooling fan 30 and the yoke joint 27 do not come out of the input shaft 9a during rotation. Thereafter, the cross kit 21b on the left side of the figure constituting the universal joint 28 is fitted on the spigot portion 27a formed at the end of the yoke joint 27 and positioned coaxially, and then the flange portion of the cross kit 21b is formed on the side end surface. 22b is fixed with bolts 24, 24,.

  Further, a flange portion 27a is fixed to the outer periphery of the yoke joint 27, and a brake disk 28 on which the service brake 8 acts is positioned on the flange portion 27a coaxially at the inlay portion, and then a bolt 29, 29,... Are equally arranged on the circumference and fixed.

  Thus, the rotational driving force of the electric motor 6 is transmitted from the output shaft 6a to the input shaft 9a of the speed reducer 9 through the universal joint 20. At the same time, the brake disk 28 attached to the yoke joint 27 attached to the input shaft 9a and the cooling fan 30 similarly attached to the input shaft 9a also rotate at the same speed as the rotational speed of the electric motor 6. Usually, the rotational speed of the electric motor 6 is rotating at 1200 to 1800 rpm. Therefore, the cooling fan 30 also rotates at the same speed, so that air is blown in the direction of the input shaft 9a of the speed reducer 9 and the bearing portion of the input shaft 9a. Cool down. The above has described the driving tension device 1 having a tensioning device for tensioning the rope 13 at one stop. However, only the driving device having no tensioning device has a cooling mechanism at the driving shaft connecting portion. Of course, it is possible to configure.

  4 and 5 show a cooling mechanism for a driving shaft connecting portion according to claim 2 of the present invention. The structure or structure for connecting the input shaft 6a of the electric motor 6 and the universal joint 40 shown on the right side of the drawing is substantially the same as the structure or structure described in the first embodiment. That is, the yoke joint 45 is inserted into the input shaft 6a of the electric motor 6 with the key 46 stopped. On the left end side of the yoke joint 45, the flange portion 42a of the cross kit 41a on the right side of the universal joint 40 is positioned coaxially with a collar 47 and secured with bolts 43, 43,.

  Next, the configuration shown on the left side of FIG. 4 is a spare prime mover using an internal combustion engine when the prime mover 1 is equipped with a spare prime mover (not shown) and the electric motor 6 cannot be used due to a power failure or the like. A structure for transmitting the rotational driving force to the input shaft 9a of the speed reducer 9 is incorporated. The inner ring of the bearing 55 is inserted into the outer peripheral portion of the input shaft housing 9 c of the speed reducer 9 and is prevented from coming off in the axial direction by a retaining ring 68. Further, after a preliminary driving V-groove pulley 52 having a V-groove for engaging a V-belt (not shown) is fitted to the outer ring of the bearing 55, the bearing retainer 56 is attached to the plurality of hexagon socket head bolts 57 from the side. , 57,...

  Further, a hollow cylindrical spline shaft 58 is fixed to the end surface on the right side of the bearing retainer 56 with hexagon socket head bolts 59, 59,. A slide block 60 is inserted into the spline shaft 58 so that the splines are engaged with each other so as to be movable in the axial direction. Further, a connecting pin 63 is fixedly extended from the side surface of the slide block 60 with a hexagon socket bolt 64 toward the right side in the figure. A lock pin 61 biased by a spring is provided on the outer periphery. Locking holes 58a and 58b through which the lock pin 61 is inserted and removed are formed on the spline shaft 58 side. Although the operation will be described later, the slide block 60 is positioned in the thrust direction with respect to the spline shaft 58 by inserting the lock pin 61 into the locking hole 58a or 58b. Further, a preliminary drive switching detection ring 62 is inserted into the slide block 60 on the side surface.

  With the above configuration, the space around the input shaft 9a of the speed reducer 9 is limited to the cylindrical space 69 of the spline shaft 58 as shown in FIG. Also, an air hole 70 is formed to communicate with the space 69 and the external space. In this way, the cooling fan 51 and the substantially conical disk yoke joint 49 are inserted into the input shaft 9a extended in the space 69 with the key 67 stopped, and the shaft end surface of the input shaft 9a is inserted. The shaft end plate 65 is attached with a bolt 66 to prevent it from coming off. Subsequently, a brake disk 48 is coaxially attached to the disk yoke joint 49 shown in FIG. 4 with hexagon socket head cap screws 50, 50,. Further, the flange portion 42b of the cross kit 41b on the left side of the universal joint 40 is similarly attached to the brake disc 48 on the same axis as the input shaft 9a with bolts 44, 44,.

  Thus, in normal operation, the rotational driving force of the electric motor 6 is transmitted from the output shaft 6a to the input shaft 9a of the speed reducer 9 through the universal joint 40. At the same time, the substantially conical disk yoke joint 49 and the brake disk 48 that are inserted into the input shaft 9a, and the cooling fan 51 in the space 69 formed inside the cylindrical spline shaft 58 are also connected to the electric motor 6. It rotates at the same speed as the rotation speed. Accordingly, the cooling fan 51 also rotates at 1200 to 1800 rpm in the same manner as in the first aspect, whereby the airflow flows in the space 69 and the air hole 70 in the direction of the arrow 71, thereby cooling the input shaft housing 9c portion. .

  At that time, the slide block 60 inserted into the spline shaft 58 is slid in the direction of the bearing retainer 56 in the direction of the arrow 72, and the connection pin 63 attached to the slide block 60 is extracted from the engagement hole 48 a of the brake disk 48. Then, the engagement relationship between the brake disk 48 and the preliminary driving V-groove pulley is released, and the lock pin 61 is inserted into the locking hole 58a formed in the slide shaft 58 to lock the released state. In this way, during the operation by the normal electric motor 6, the rotational driving force of the electric motor 6 is not transmitted to the preliminary driving V-groove pulley 52.

  In contrast to the normal operation described above, when the electric motor 6 cannot be operated due to an unsuccessful power outage or the like and the transporter on which the passenger has boarded stops on the track, the vehicle is operated with a standby prime mover (not shown). There is a need to rescue passengers. In this case, contrary to the above, the lock pin 61 of the slide block 60 is removed from the locking hole 58a, the slide block 60 is slid in the direction of the arrow 75, and the connection pin 63 is moved into the engagement hole 48a of the brake disk 48. Further, the lock pin 61 urged by the spring of the slide block 60 is inserted into the locking hole 58b of the spline shaft 58 to lock the engaged state. Thus, the rotational driving force of the preliminary driving device is transmitted to the preliminary driving V-groove pulley 52 rotatably supported by the bearing 55 on the input shaft housing 9C of the speed reducer 9 by the V belt (not shown). The rotational driving force is transmitted in the order of the spline shaft 58, the connecting pin 63 provided on the slide block 60, and the break disk 48, and thereafter the input shaft of the speed reducer 9 from the disk yoke joint 49 in the same manner as in the first embodiment. 9a. In addition, the operating state of the preliminary driving device is electrically detected by the preliminary driving switching detection ring 62 attached to the slide block 60.

  In this way, the reduction gear 9 is rotationally driven by a preliminary driving device (not shown) to rotate the driving pulley 10 fitted to the output shaft 9C of the reduction gear 9 shown in FIG. (Not shown)) Rescue the passengers of the transporters who stopped on the track.

  When the preliminary driving V-groove pulley 52 is provided in the input shaft housing 9C of the speed reducer 9 with the bearing 55, the heat generated by the rotation of the bearing 55 and the heat generated by the rotation of the bearing of the input shaft 9a are further generated. Since both are added and the outer periphery of the input shaft housing 9C is covered with the bearing 55 and the preliminary driving V-groove pulley 52, it is difficult to dissipate heat, so that the input shaft 9a portion is more likely to be seized, and the preliminary driving device Also in the case of driving, the cooling fan 51 of the present invention is rotated to cool the input shaft housing 9C portion, which is effective in preventing seizure of the input shaft 9a portion.

DESCRIPTION OF SYMBOLS 1 Driving tension device 2 Front leg 3 Rear leg 4 Driving tension frame 5 Sliding frame 6 Electric motor 6a Output shaft 7 Universal joint 8 Regular brake 9 Reducer 9a Input shaft 9b Input shaft housing 9c Output shaft 10 Driving pulley 11 Tension device (hydraulic pressure) cylinder)
12 emergency brake 13 rope 14, 15 foundation 16, 17, 18 arrow 20 (7) universal joint 21a, 21b cross kit 22a, 22b flange 23, 23, ... bolt 24, 24, ... bolt 25 yoke joint 26 key 27 Yoke joint 28 Brake disk 29, 29, ... Bolt 30 Cooling fan 31 Collar 32 Key 33 Shaft end plate 34 Bolt 40 Universal joint 41a, 41b Cross kit 42a, 42b Flange 43, 43, ... Bolt 44, 44, ... Bolt 45 Yoke joint 46 Key 47 Collar 48 Brake disc 48a Engagement hole 49 Disc yoke joint 50, 50, ... Hex socket head bolt 51 Cooling fan 52 Preliminary drive V-groove pulley 53 Ring 54, 54, ... Bolt 55 Bearing 6 Bearing retainer 57, 57, ... Hexagon socket head cap screw 58 Spline shaft 58a, 58b Locking hole 59, 59, ... Hexagon socket head cap screw 60 Slide block 61 Lock pin 62 Preliminary drive switching detection ring 63 Connection pin 64 Hexagon socket head cap screw 65 shaft end plate 66 bolt 67 key 68 retaining ring 69 space 70 air hole 71, 72, 73 arrow 100 prime mover 101 rope 102 prime mover frame 103 motor 103a output shaft 104 brake 105 decelerator 105a input shaft 105b output shaft 106 prime mover Pulley 106a Disc surface 107 Brake 108, 108 Rope device 109 Brake disc 110 Universal joint 110a, 110b Cross kit 111 Yoke joint 112 Key 113, 113, ... Bolt 114 Yoke joint 114 a flange portion 115, 115, ... bolt 116 shaft end plate 117 bolt 118, 118, ... bolt 119 color 120 key 121, 122 column

Claims (3)

  In a cableway facility in which a rope suspended from a carrier is wound between pulleys pivoted at a stop and circulated to operate the carrier, a prime mover for rotating the pulley around which the rope is wound, An electric motor constituting the prime mover; a speed reducer that reduces the rotational speed of the motor; a universal joint that connects an output shaft of the motor and an input shaft of the speed reducer; an output shaft of the motor; The cooling fan is mounted on the same axis as the input shaft of the machine and the rotary shaft of the universal joint. When the electric motor starts rotating, the cooling fan also rotates and blows air toward the input shaft of the speed reducer to reduce the deceleration. A cooling mechanism for a driving shaft connecting portion of a cableway, wherein the input shaft portion of the machine is cooled.   The drive shaft connection of a cableway according to claim 1, wherein a brake disc is provided on the same axis as the rotary shaft with a disc yoke joint interposed between the universal joint and the input shaft of the speed reducer. Part cooling mechanism.   On the outer periphery of the input shaft housing of the speed reducer, a preliminary driving V-groove pulley for transmitting the driving force of the preliminary driving device, a bearing retainer, and a spline shaft are rotatably mounted via a bearing. A slide block that slides in the thrust direction of the rotary shaft is attached to the shaft, and a connection pin is attached to the periphery of the slide block. The connection pin is engaged with and disengaged from the brake disk, so that the rotation of the preliminary prime mover is input to the reduction gear. 3. A cooling mechanism for a driving shaft connecting portion of a cableway according to claim 1, wherein a preliminary driving drive switching mechanism is configured to transmit intermittently to the shaft.

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