JP2013147338A - Carrying device of railroad wheel set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a counterweight and reduce a dimension in an axial direction of a wheel set, in a carrying device of a railroad wheel set.SOLUTION: A carrying device 1 is a device for lifting and carrying a railroad wheel set 50 with a reducer 51 by holding a tread along a circumference of a wheel from above, and includes: two pairs of holding arms 2a, 2b and 3a, 3b which hold the tread at the lower portion; a lifting frame 4 which holds upper parts of the holding arms 2a, 2b, 3a and 3b in an openable/closable manner; an arm opening/closing mechanism which locks lower end parts of the holding arms 2a, 2b, 3a and 3b by holding the tread of the wheel; and reducer supporting pieces 7 and 8 which are provided at intermediate portions of the holding arms 2a, 2b, 3a and 3b and which support the reducer 51 by wrapping around a lower side of the reducer 51 during operation of the holding arms 2a, 2b, 3a and 3b to hold the tread of the wheel. Accordingly, a counterweight is not required and the dimension in the axle direction can be reduced, and at the same time the wheel set 50 can be safely lifted without damaging an axle 54.

Description

  The present invention relates to a railway wheel shaft carrying device with a reduction gear.

  2. Description of the Related Art Conventionally, an apparatus for conveying a railway wheel shaft is known. The railroad axle is an assembly of a pair of wheels and an axle for a railway vehicle. Some of the wheel shafts include a reduction gear. When the axle with a reduction gear is lifted only on the axle portion, the reduction gear rotates downward and drags the reduction gear. In addition, when the wheelchair with the speed reducer once lifted is lowered, the speed reducer contacts the ground first. Therefore, it was necessary to move the wheel shaft while slightly moving the position of the conveying device so as not to drag the speed reducer. In order to solve such a problem, a transport device as described in the following patent document has been proposed.

Japanese Patent No. 3790581 JP 11-334588 A

  The transport device described in Patent Document 1 is a so-called forklift with a dedicated fork attached thereto, and the fork is inserted from a direction perpendicular to the wheel shaft to lift the axle while supporting the reduction gear. In the case of the transport device described in Patent Document 1, a heavy vehicle body having a counterweight that balances the weight of the wheel shaft to be lifted is required, which causes a problem that the device becomes heavy and large.

  In addition, the transport device described in Patent Document 2 includes dedicated forks 110a and 110b in a direction facing along the axle 54 from both sides of the wheel 54 of the railway axle 50, as in the transport device 100 shown in FIG. The speed reducer 51 and the wheels 52 and 53 are simultaneously lifted up. In the case of the transport device 100, in addition to the entire length of the wheel 54, the lengths of the forks 110a and 110b that can be moved up and down on both sides are necessary, which is a restriction on the downsizing of the device. Further, when the axle boxes 55 and 56 are attached to the railway axle, a fork for fixing the axle box 55, the wheel 52, and the speed reducer 51 is required, which further complicates the apparatus.

  The present invention has been made in order to solve the above-described problems of the conventional example, and does not require a balance weight to balance the weight of a railway axle, and can reduce the axle in the axle direction. An object of the present invention is to provide a wheel shaft carrying device.

  In order to achieve the above object, the present invention grips a railroad wheel axle including a pair of wheels and an axle with a speed reducer provided between the wheels from above the wheel axle along the circumference of the wheel. A pair of gripping arms for gripping each tread surface of each of the pair of wheels at a lower portion of the tread surface, and the gripping portion at an upper portion of the pair of gripping arms. The arm is supported to be openable and closable, and is connected to an elevating frame for raising and lowering the gripping arm, and an upper end portion of the gripping arm. The gripping arm is opened and closed, and the tread of the wheel is supported at the lower end portion of the gripping arm. An arm opening / closing mechanism that locks in the gripped state and an intermediate portion of the gripping arm, and when the gripping arm grips the tread surface of the wheel, the arm opens downward to support the speed reducer Characterized in that it comprises a reduction gear support piece that, the.

  In the transporting device, it is preferable that the pair of gripping arms are supported by the lifting frame with a space therebetween.

  In the transporting device, the speed reducer support piece is provided on one arm of the pair of gripping arms, and the support piece of one set and the support piece of the other set are: It is preferable that they are provided at diagonal positions.

  In the transporting device, the pair of gripping arms are in contact with axle boxes provided at both ends of an axle for attaching the railway wheel shaft to a railway vehicle during an operation of gripping a tread surface of a wheel, and the box shaft rotates. It is preferable to further have a shaft box holding rod for preventing the above.

  According to the present invention, the two pairs of gripping arms grip the tread surface of the wheel of the railway wheel shaft from above, and the lifting frame lifts the gripping arm to lift the wheel shaft. Compared to the case where a fork is used, the transport device does not require a counterweight and a space for raising and lowering the fork, and thus can be reduced in size. The reduction gear of the wheel shaft is supported so as not to move by the reduction gear support piece. Thereby, it is possible to prevent the speed reducer from being dragged when the lifting frame is raised and lowered. Since the grip arm grips the tread surface of the wheel, the transport device can carry the wheel shaft more safely without damaging the axle.

(A) is a perspective view of the conveying apparatus of the railway wheel shaft which concerns on the Example of this invention, (b) is a perspective view of the railway wheel shaft. (A) is a perspective view of the conveyance apparatus of the state which hold | gripped the wheel shaft, (b) is a perspective view which expands the wheel part of the side provided with the reduction gear. Side surface part of the gripping part of the railway wheel axle transportation device. FIG. 3 is a three-side view of the transport device in a state where the wheel shaft is gripped. The control block diagram of the conveyance apparatus of the wheelset for railroads. The front view of the conveying apparatus of the wheelset for railways of a prior art example.

  The railway wheel shaft carrying device with a speed reducer according to the embodiment can open and close the two pairs of grip arms and the pair of grip arms that grip the lower part of the tread along the circumference of the wheel shaft from above. And a lifting frame attached to the. The transport device 1 grips the wheel shaft with the grip arm and then lifts the lifting frame to transport the wheel shaft. The pair of gripping arms includes a reduction gear support piece that supports the lower portion of the tread so that the lower portion of the tread is held by the lower end portion of the tread so as not to rotate around the axle. Yes. By adopting a configuration in which the wheel shaft is gripped from above, it is possible to reduce the size of the apparatus by eliminating the need for a counterweight and a space for raising and lowering the fork as compared with the case of using a fork. In addition, the speed reducer is prevented from rotating when the wheel shaft is raised and lowered, thereby enabling safe transportation of the wheel shaft. Hereinafter, an embodiment of a railway wheel axle transportation device having the above-described features will be described.

  FIG. 1A is a perspective view of a railway wheel shaft carrying device 1, and FIG. 1B is a perspective view of a railway theoretical shaft 50 carried by the device 1. The apparatus 1 includes gripping portions 2 and 3 provided at intervals to grip a wheel of a wheel shaft 50, a lifting frame 4 that holds the gripping portions 2 and 3 so as not to swing, and both ends of the lifting frame 4. And a main body 5 that supports the hoist so as to be movable up and down. The elevating frame 4 is a ladder type frame. The main body 5 has wheels 6 at four corners for moving in the double arrow A direction.

  The railway axle 50 includes a reduction gear 51, two wheels 52 and 53, an axle 54, and axle boxes 55 and 56 attached to both ends of the wheel 54. Further, the wheel shaft 50 includes a removable moving carriage 57 that supports the speed reducer 51 so as not to contact the ground. The axle boxes 55 and 56 include detachable moving carriages 58 and 59 that support the axle box body so as not to rotate in a state where it is inclined downward, for example, by 3 to 4 degrees.

  The grip portion 2 included in the device 1 has a shape along the circumferential surface of the wheel 52, and has a pair of grip arms 2a and 2b that grip the lower portion of the tread surface of the wheel 52 at the tip portion. . The grip portion 3 has a shape along the circumferential surface of the wheel 53, and has a pair of grip arms 3 a and 3 b that grip the lower portion of the tread surface of the wheel 53 at its tip portion. An anti-slip material such as rubber is attached to the tip of each gripping arm. By enlarging the area of the tip portion in contact with the tread surface, it is possible to prevent a strong force from being applied to a part of the wheels 52 and 53 by the gripping portions 2 and 3 and damage.

  The gripping arm 2 a includes a speed reducer support piece 7 that goes under the speed reducer 51 and engages with the notch 51 a to support the speed reducer 51 when gripping the tread of the wheel 52. The grip arm 3a has a speed reducer support piece 8 at a diagonal position with respect to the speed reducer support piece 7 of the grip arm 2a.

  Further, the gripping arms 2 a and 2 b have shaft box pressing bars 9 a and 9 b that contact the shaft box 55 to prevent the box shaft 55 from rotating when gripping the tread surface of the wheel 52. The gripping arms 3 a and 3 b have shaft box pressing bars 10 a and 10 b that contact the shaft box 56 and prevent the box shaft 56 from rotating when gripping the tread surface of the wheel 53.

  2A is a perspective view of the transport device 1 in a state where the wheel shaft 50 is gripped by the gripping portions 2 and 3, and FIG. 2B is a perspective view showing an enlarged view of the vicinity of the speed reducer 51. is there. The speed reducer 51 has a notch 51 a that is supported when the speed reducer support piece 7 turns downward when the wheel shaft 50 is moved up and down. The wheel shaft 50 is transported in a state where the grips 2 and 3 are raised by the elevating frame 4.

  As shown in an enlarged view in FIG. 2B, the speed reducer support piece 7 is attached to the middle position of the gripping arm 2a. The reducer support piece 7 includes a member 7a extending away from the wheel 52, a member 7b extending to the position of the reducer 51 along the axle 54, and a reducer so as not to hit the moving carriage 57 of the reducer 51. And a protrusion 7c that extends around the lower side of the notch 51a and supports the notch 51a from the lower side. The reduction gear support piece 8 shown in FIG. 1A has the same configuration as the reduction gear support piece 7.

Axle box presser bar 9a has a substantially L-shape, the portion 9a ₁ extending into the axle box 55 along the the gripping arm 2a the axle 54, in contact with a portion of the axle box 55 And a portion 9a ₂ extending so as to be fixed. The axle box pressing rods 9b, 10a, and 10b shown in FIG. 1 (a) have the same configuration as the axle box pressing rod 9a.

  FIG. 3 is a view of the state in which the wheel 52 is gripped by the pair of gripping arms 2a and 2b of the gripping unit 2 as viewed from the direction of the arrow B shown in FIG. In the drawing, the gripping arms 2a and 2b in an open state are indicated by solid lines, and the gripping arms 2a and 2b in a closed state are indicated by dotted lines.

  The grip portion 2 is attached to a support bar 4a constituting the lifting frame 4 so that the grip arms 2a and 2b are opened and closed by the vertical movement of the cylinder of the electric arm opening and closing cylinder 11. Specifically, the arm opening / closing cylinder 11 is fixed to the support rod 4a so that the cylinder can be moved up and down. The pair of gripping arms 2a and 2b has attachment portions 2c and 2d that are rotatably attached to the support rod 4a above the arms 2a and 2b. One ends of connecting rods 2e and 2f are rotatably attached to the upper ends of the gripping arms 2a and 2b. The other ends of the connecting rods 2e and 2f are rotatably attached to the cylinder end of the arm opening / closing cylinder 11. By adopting the above configuration, the gripper 2 opens and closes the grip arms 2 a and 2 b simultaneously with the vertical movement of the arm opening and closing cylinder 11. The grip part 2 locks the wheel 52 in a gripped state by stopping the power supply to the arm opening / closing cylinder 11.

  The grip arms 2a and 2b are attached to the support bar 4a with attachment portions 2c and 2d spaced apart from each other. Further, the support bar 4a constitutes a ladder-type lifting frame 4 shown in FIG. Thereby, the raising / lowering frame 4 can lift the wheel 52 safely, without rocking | fluctuating. Since the grip portion 2 grips the tread surface of the wheel 52, the wheel shaft 50 can be transported without damaging the axle 54 compared to the case where the axle 54 is lifted by a fork.

  The axle box pressing rods 9a and 9b hold and fix the upper portion 55a of the axle box 55 from both sides when the gripping arms 2a and 2b grip the tread surface of the wheel 51. This prevents the axle box 55 from rotating during transportation.

  FIG. 4 is a front view, a left side view, and a top view of the transport device 1 in a state in which the elevating frame 4 is lifted after the wheel shaft 50 is gripped by the grip portions 2 and 3. The top view shows a C-C ′ cross section of the front view. As shown in the top view, the pair of gripping arms 3a and 3b of the gripping part 3 is lifted and lowered so as to be opened and closed by the vertical movement of the cylinder of the electric arm opening and closing cylinder 12 like the pair of gripping arms 2a and 2b. The frame 4 is attached to a support bar 4b. The speed reducer support piece 7 of the grip arm 2a and the speed reducer support piece 8 of the grip arm 3a are provided at diagonal positions. The main body 5 of the apparatus 1 includes an electric lifting device 13 that supports both ends of the lifting frame 4 so as to be liftable. In this figure, the reduction gear support piece 8 is not used to lift the wheel shaft 50. As shown in the left side view, an operation panel 14 is provided on the front side of the main body 5.

  FIG. 5 shows the configuration of the control block of the transport device 1. The control block is centered on the control unit 15, the operation panel 14, the arm opening and closing cylinders 11, 12, the lifting device 13, the device driving unit 16 that drives the wheels 6 in the front-rear direction, the rechargeable battery 17, and a warning It comprises other equipment 18 such as a lamp.

  The operation panel 14 has "open" 14a and "close" 14b operation buttons for instructing opening and closing of the arms of the gripping units 2 and 3, and "up" 14c and "down" 14d operation buttons for instructing raising and lowering of the lifting bar. And an operation button for “automatic operation” 14e. The “automatic operation” 14e operation button is used when the apparatus 1 is moved along a predetermined route.

  The control unit 15 includes a ROM 15a that stores a program, a calculation unit 15b that executes the program, and a RAM 15c that is used as a work area of the calculation unit. The calculation unit 15b waits for an input of an operation button after the apparatus 1 is activated, and executes a control program that performs processing according to the pressed operation button.

  Specifically, the control unit 15 performs the following processing. The arm open / close cylinders 11 and 12 are lowered in response to pressing of the “open” operation button 14a, and the arms of the gripping portions 2 and 3 are opened. The arm open / close cylinders 11 and 12 are raised in response to pressing of the “close” operation button 14b, and the arms of the gripping portions 2 and 3 are closed. The lifting device 13 is moved in accordance with the pressing of the “up” 14c or “down” 14d operation button to raise or lower the lifting frame 4. In response to the pressing of the “automatic operation” 14e operation button, the device drive unit 16 moves the wheel 6 to move the device 1. The operation is performed while the operation button is pressed. When the operation button that has been pressed is released, the calculation unit 15b waits for the operation button to be pressed again.

  Instead of the ROM 15a, the control unit 15b, and the RAM 15c, a hardware circuit that directly drives the corresponding arm opening / closing cylinders 11, 12, the lifting device 13, and the device driving unit 16 in response to pressing of the operation buttons 14a to 14e. May be used.

  The operation of lifting the wheel shaft 50 is performed according to the following procedure by operating the operation panel 14 provided in the main body 5. First, the “up” 14c operation button is pressed to raise the lifting frame 4 of the apparatus 1 to the top. Next, the wheel shaft 50 is disposed under the grip portions 2 and 3. Next, the operator presses the “open” 14a operation button to open the grip arms 2a and 2b and the grip arms 3a and 3b, and then presses the “descent” 14d operation button to lower the elevating frame 4. After the elevating frame 4 is lowered, the “close” 14b operation button is pressed to close the gripping arms 2a, 2b and the gripping arms 3a, 3b to grip the treads of the wheels 52, 53 of the wheel shaft 50. The gripping portions 2 and 3 firmly hold the speed reducer 51 and the shaft boxes 55 and 56 so as not to move by the actions of the speed reducer support pieces 7 and 8 and the shaft box holding rods 9a, 9b, 10a and 10b. . Thereafter, the operation button of “lift” 14 c is pressed to raise the elevating frame 4 and lift the wheel shaft 50.

  As described above, the transport device 1 grips the treads of the wheels 52 and 53 of the wheel shaft 50 with the speed reducer and the speed reducer 51 from above using the grip portions 2 and 3 having a pair of grip arms. Can be lifted. Thereby, the reduction gear 51 is lifted without being dragged. Since the transport device 1 does not require a counterweight such as that used in a forklift, the weight can be reduced. The transport device 1 does not need to move the grips 2 and 3 away from the wheel in the axial direction when the wheel shaft 50 is disposed, and the wheel shaft axle is compared with a transport device that employs a form in which a fork is inserted from the outside along the wheel shaft 50. The length of the direction can be shortened. By gripping the treads of the wheels 52 and 53, the weight of the wheel shaft 50 is not applied to a part of the wheel shaft 54 as in the case of lifting the wheel shaft 54 with a fork. Furthermore, the gripping portions 2 and 3 are attached to the elevating frame 4 so as not to swing, and the wheels 52 and 53 do not slide with the ground contact surface when the wheel shaft 50 is lifted. As described above, the transport device 1 can transport the wheel shaft 50 more safely without damaging the treads of the wheels 52 and 53 and the axle 54.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, each part of the apparatus 1 is electrically driven by a rechargeable battery, but an internal combustion engine may be used as a power source. In addition, by adopting wheels that are provided in the main body 5 that face in various directions, and provided with a switch for instructing the traveling direction on the operation panel 14, the apparatus 1 may be movable in any direction.

  The transport device of the present invention can be used for transporting a relatively heavy wheel shaft that has the same configuration as that of a train wheel shaft and needs to be transported using a device such as a forklift, in addition to transport of a train wheel shaft.

DESCRIPTION OF SYMBOLS 1 Wheel shaft conveying apparatus 2, 3 Grip part 2a, 2b, 3a, 3b Grip arm 4 Lifting frame 5 Main body 9a, 9b, 10a, 10b Shaft box holding bar 7, 8 Reduction gear support piece 50 Wheel shaft 51 Reduction gear 52, 53 Wheel 54 axles

Claims (4)

A transport device that lifts and transports a railway wheel shaft including a pair of wheels and an axle with a speed reducer provided between the wheels, gripping the tread along the circumference of the wheel from above the wheel shaft,
Two pairs of gripping arms for gripping the treads of each of the pair of wheels at the lower part of the treads;
An upper and lower frame for raising and lowering the gripping arm, while supporting the gripping arm so as to be openable and closable at the upper part of the pair of gripping arms;
An arm opening and closing mechanism coupled to the upper end of the gripping arm to open and close the gripping arm and lock the wheel tread with the lower end of the gripping arm;
A reduction gear support piece that is provided at an intermediate portion of the gripping arm, and wraps around the reduction gear to support the reduction gear when the gripping arm grips a tread of a wheel;
An apparatus for transporting a railway wheel shaft, comprising:   2. The railway wheel axle transport device according to claim 1, wherein the pair of gripping arms are supported by the lifting frame with a space between each other. 3.   The reduction gear support piece is provided on one arm of the pair of gripping arms of each set, and the support piece of one set and the support piece of the other set are provided at diagonal positions. The railway wheel axle transport device according to claim 1 or 2, wherein the railway wheel shaft transport device is provided.   The pair of gripping arms are axle box pressers that prevent rotation of the axle box by abutting against axle boxes provided at both ends of the axle for attaching the railway wheel axle to a railway vehicle during an operation of gripping a tread of a wheel. The transportation device for a railway axle according to any one of claims 1 to 3, further comprising a rod.

Images