JP2016203749A - Bogie frame load loading device of railway vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bogie frame load loading device of a railway vehicle which improves workability, and can perform the attachment/detachment of a shaft spring at a low cost when performing the dismantling/assembling work of a bogie in the maintenance of the bogie having a shaft spring between a shaft box and a bogie frame of the railway vehicle.SOLUTION: In a bogie frame load loading device 2 of a railway vehicle which comprises a bogie placing part 10 for placing a bogie 70 of a Shinkansen vehicle having a shaft spring 76 between a shaft box 73 and a bogie frame 75, and a load loading part 30 for making upper ends 21 of a pair of support columns 20 erected at both sides of the bogie placing part 10 generate pressing forces F to left and right directions RL along an axle direction of the bogie 70, and compresses the shaft spring 76 by applying a load to the bogie frame 75 of the bogie 70 which is placed on the bogie placing part 10 by the load loading part 30, the load loading part 30 has a rotating mechanism 40 which can turn with an axial line M along the support columns 20 as a center.SELECTED DRAWING: Figure 1

Description

  In the maintenance of a bogie of a railway vehicle, this invention removes the bogie frame in a state in which the restoring force of the shaft spring has been lost, and disassembles the car into parts and units, and the parts and units in a disassembled state And a bogie frame load-loading device for a railway vehicle used when a bogie assembly process is performed in which the bogie frame is supported by a shaft box with a shaft spring.

  Among railway vehicles, there is a carriage provided with a shaft spring between an axle box containing a bearing that rotatably supports the axle and a carriage frame. In such a carriage, the carriage frame is The box is relatively supported by a shaft spring. When a railway vehicle reaches a specified travel distance or inspection time, maintenance is performed for the purpose of maintenance inspection of the bogie. The shaft spring is attached in a compressed state and is held by a bolt so that the spring does not extend any further. In the maintenance of the carriage, the carriage is removed from the wheel axle with the restoring force of the shaft spring in the compressed state lost by the carriage frame load loading device, etc., and further disassembled for each component or unit .

  Patent Document 1 is a cart assembly device that assembles a cart by accurately positioning a wheel shaft and a cart frame with respect to a railway vehicle, and includes a cart frame pressing unit that pushes down the cart frame against the biasing force of a shaft spring. Yes. The maintenance work of the above-described carriage is performed using a conventional vehicle frame load loading device configured in the same manner as the structure of the carriage frame pressing means of Patent Document 1. In the maintenance of the cart by the conventional cart frame load loading device 102 shown in FIGS. 13 and 14, after one cart is carried under the column upper end portion 121 of the cart frame load loading device 102, When 130 hydraulic cylinders 131 apply a load to the upper center portion of the carriage frame 75, the four axial springs 76 on the front and rear and left and right wheels are further compressed from the spring length originally in the compressed state. As a result, the extension of the shaft spring 76 is restrained by a load load (load load) by the hydraulic cylinder 131, and the restraint state of the shaft spring 76 by the bolt is released, so that the bolt can be removed. After that, when the load on the carriage frame 75 is extracted due to the rod retreat of the hydraulic cylinder 131, the shaft spring 76 becomes natural length, and the operator can safely remove the shaft spring 76 from the carriage frame 75. .

  In the bogie frame load device 102, the column 120 is fixed, and the load load portion 130 at the upper end 121 of the column 120 is located on the bogie frame 75 of the loaded bogie. When the bogie frame 75 is lifted in the apparatus 102, the bogie frame 75 interferes with the load loading portion 130 (the column upper end portion 121). Therefore, if the various work processes that follow after removing the bolts cannot be performed in the bogie frame load load device 102 and a relatively wide work space can be secured around the bogie frame load load device 102, The cart with the bolts removed is moved away to a position that avoids interference with the column upper end 121 of the cart frame load loading device 102. Then, the location after the movement is used as a space for inspection and repair of the bogie, and an operator can disassemble parts and units in the bogie frame 75, the wheel shaft 71, etc. by using a dedicated facility different from the bogie frame load loading device 102. Multiple types of work such as measurement work. In the assembly process of parts, etc., performed after inspection and repair of the carriage, the order of the disassembly process is reversed, the work contents of the disassembly of the parts and the assembly of the parts are different, and other substantial work contents are significantly different. There is no.

JP 2006-116992 A

  However, in the conventional bogie frame load loading device including the technique of Patent Document 1, since the column is fixed, various work steps that follow the load loading can be performed under the bogie frame load loading device. It was not possible, and the extra steps involved in moving the carriage with the bolts removed increased the work time required for maintenance, and the maintenance workability was also poor. At the same time, there was a problem that maintenance was expensive. In addition, as mentioned above, it is difficult to secure a space to move a large unit such as a bogie frame or wheel shaft outside the bogie frame load load device in the factory where the bogie maintenance is performed. There was also.

  The present invention has been made to solve the above-described problems, and in the maintenance of a carriage provided with a shaft spring between a axle box and a carriage frame among railway vehicles, the work for disassembling the carriage and its assembly In carrying out the work, an object is to provide a bogie frame load loading device for a railway vehicle that can improve the work efficiency and can attach and detach the shaft spring at a low cost.

In order to achieve the above object, a bogie frame load loading device for a railway vehicle according to the present invention has the following configuration.
(1) A stand mounting unit for mounting a railcar bogie equipped with a shaft spring between the axle box and the bogie frame, and standing on both sides of the base mounting unit with respect to the left-right direction along the axle direction of the cart. A load load portion that generates a pressing force is provided at each upper end portion of the pair of columns provided, and the load spring applies a load to the bogie frame of the bogie placed on the platform mounting portion so that the shaft spring is applied. In the bogie frame load loading device of the railway vehicle to be compressed, the load load portion has a rotation mechanism that can turn around an axis along the support column.
(2) In the bogie frame load loading device for a railway vehicle described in (1), the pair of support columns are erected in a structure that is slidable in the left-right direction, and move in directions away from each other or in directions close to each other. It is characterized by this.
(3) In the bogie frame load load device for a railway vehicle described in (1) or (2), the rotation mechanism is provided on the support column, and the load load is applied to the direction of the axis line from the stand mounting unit. It is arrange | positioned near the upper end part side of the said support | pillar close | similar to a part.
(4) In the bogie frame load-loading device for a railway vehicle described in any one of (1) to (3), the pair of struts respectively include a rotation support portion that holds the load load portion and a lower portion thereof. A rotation support portion that supports the rotation support portion, and in the rotation mechanism, the rotation support portion rotates relative to the rotation support portion based on a rotational force of an electric motor. Features.

The operation and effect of the bogie frame load loading device of the present invention having the above-described configuration will be described.
(1) A stand mounting unit for mounting a railcar bogie equipped with a shaft spring between the axle box and the bogie frame, and standing on both sides of the base mounting unit with respect to the left-right direction along the axle direction of the cart. A load load portion that generates a pressing force is provided at each upper end portion of the pair of columns provided, and the load spring applies a load to the bogie frame of the bogie placed on the platform mounting portion so that the shaft spring is applied. In the bogie frame load loading device of the railway vehicle to be compressed, the load loading portion has a rotation mechanism that can turn around an axis along the support column. With this feature, the direction of the load load portion can be changed from an operating posture in which a load is applied to the carriage frame by a rotation mechanism to a retracted posture rotated at an angle of 90 degrees between the operating posture and the like, In performing the work after loading the load in the disassembly process of the carriage, the carriage frame can be lifted by the crane directly above the carriage mounting section from the position of the carriage placed on the carriage mounting section. In addition, the direction of the load-loading section can be changed from the retracted position to the operating position by the rotation mechanism. Can be suspended using the above-mentioned crane toward the wheel shaft placed on the on-vehicle mounting portion. Therefore, the maintenance work of the carriage can be efficiently performed by performing the maintenance of the carriage using the carriage frame load loading apparatus of the present invention as compared to the case where the maintenance of the carriage is performed using the conventional carriage frame load loading apparatus. The work time can be shortened and workability is improved. Therefore, the cost for maintenance can be suppressed.

  Therefore, according to the bogie frame load loading device for a railway vehicle of the present invention, the operation of disassembling the bogie and the assembling work thereof in the maintenance of the bogie provided with the shaft spring between the axle box and the bogie frame among the railway vehicles. As a result, the working efficiency is improved and the shaft spring can be attached and detached at low cost.

(2) The pair of support columns are erected in a structure that is slidable in the left-right direction, and move in a direction away from each other or in a direction closer to each other. An operator's passage can be secured between the support column and the wheel shaft (or the carriage) that is positioned on the base mounting unit. For this reason, an operator working on inspection and repair work on a wheel shaft or the like can move smoothly through the passage without having to turn around the support column, thereby improving workability.

(3) The rotation mechanism is provided on the support column, and is arranged closer to the upper end side of the support column closer to the load load unit than the on-vehicle mounting unit with respect to the direction of the axis. Since the weight of the entire part to be rotated becomes lighter, the inertial moment of the rigid body is reduced, and the load source can be rotated with a smaller driving force in a driving source that generates a rotational force. Further, in the case where the support mechanism has a slide mechanism that can slide the support column in the left-right direction, the rotation mechanism can be installed at a greater distance from the slide mechanism. Avoidance is facilitated, and the structure of both mechanisms can be prevented from becoming complicated.

(4) Each of the pair of struts includes a rotation support portion that holds the load load portion and a rotated support portion that supports the rotation support portion below the rotation support portion. In the rotation mechanism, the rotation support portion is the rotation of the electric motor. It is characterized in that it rotates relative to the rotation support part based on the force, so pipes and hoses are connected to the rotation mechanism compared to the case where a hydraulic unit that obtains rotational force with a hydraulic drive source is used. Thus, the entire structure of the apparatus can be made compact without reducing the size of the entire apparatus by a complicated apparatus structure such as the above. In addition, when a hydraulic unit is used, hydraulic oil may leak to the floor when the hydraulic unit fails. However, in the bogie frame load loading device for a railway vehicle according to the present invention, an electric motor is used as the rotating mechanism. Therefore, when the rotating mechanism fails, the floor is not soiled with hydraulic oil.

(5) Since the on-vehicle mounting unit is provided with a positioning mechanism for locking the wheel of the cart placed on the on-vehicle mounting unit and positioning the mounting position of the wheel shaft. For example, when the carriage is transported by automatic feeding or the like, it is possible to reliably prevent the carriage carried into the carriage mounting unit from moving in the carriage mounting part.

It is explanatory drawing which shows the trolley | bogie maintenance apparatus comprised integrally with the trolley | bogie raising / lowering apparatus other than the trolley | bogie frame load loading apparatus of the railway vehicle which concerns on embodiment by the front view seen from the running direction of the trolley | bogie. It is explanatory drawing shown by the side view which looked at the trolley | bogie maintenance apparatus shown in FIG. 1 from the axle direction. It is explanatory drawing which shows the trolley | bogie maintenance apparatus shown in FIG. 1 by planar view from upper direction. It is a front view which shows the trolley | bogie frame load loading apparatus among the trolley | bogie maintenance apparatuses shown in FIG. It is explanatory drawing which shows the load loading part of the support | pillar upper end part among the trolley | bogie frame load loading apparatuses shown in FIG. It is explanatory drawing which showed the rotation mechanism of the bogie frame load loading apparatus shown in FIG. 4 using the partial cross section figure. It is explanatory drawing of the slide mechanism which expands and shows the A section in FIG. FIG. 5 is a side view of the bogie frame load loading device shown in FIG. 4, and is an explanatory view showing a state in which the bogie frame is pressed by a load loading portion. In FIG. 8, it is an enlarged view of the B section. It is explanatory drawing shown by planar view from upper direction about operation | movement of the trolley | bogie frame load loading apparatus shown in FIG. It is a flowchart figure explaining the whole flow in the decomposition | disassembly process of a trolley | bogie. It is a flowchart figure explaining the whole flow in the assembly process of a trolley | bogie. It is explanatory drawing shown in the front view which looked at the conventional trolley frame load load apparatus from the traveling direction of the trolley. It is explanatory drawing which shows the conventional cart frame load load apparatus by the side view from an axle direction.

(Embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a bogie frame load loading device for a railway vehicle according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing a cart maintenance device configured by integrating a cart lifting device and the like in addition to a cart frame load loading device of a railway vehicle according to an embodiment in a front view as viewed from the traveling direction of the cart. . The cart maintenance device shown in FIG. 1 is shown in FIG. 2 as a side view as viewed from the axle direction, and as shown in FIG. 3 as a plan view from above.

  In this embodiment, the bogie frame load-loading device 2 of the railway vehicle is used to remove the bolt 77 before removing the bogie frame 75 from the wheel shaft 71 in the disassembly process of the bogie 70 during maintenance of the bogie 70 of the railway vehicle. It is used to limit the restoring force and to constrain the shaft spring 76. Further, the carriage frame load loading device 2 is limited to a restoring force when the carriage frame 75 is supported on the axle box 73 by the axle spring 76 in the assembly process of the carriage 70 performed after inspection and repair of parts and units (not shown). This is also used when the bolt 77 is attached while the shaft spring 76 is restrained.

  As shown in FIGS. 1 to 3, the bogie frame load loading device 2 is incorporated in a bogie maintenance device 1 configured integrally with a bogie lifting device 3, a gear box support device 4, and a bogie automatic transfer device. ing. In FIG. 3, the cart automatic transfer device automatically feeds one cart 70 for maintenance with respect to the left direction of the traveling direction FR, and the cart mounting unit 10 of the cart frame load loading device 2 described in detail later. It is a device with a function to carry in.

  The cart lifting device 3 is used in a step after the bolt 77 is removed in the disassembling process, and supports the cart 70 by supporting the four axle box bottom portions 74 in the axle box 73 of the cart 70 with four jacks 3a. It is a lifting device. An operator performs work such as inspection and maintenance of the wheel shaft 71 and the gear box of the carriage 70 jacked up by the carriage lifting device 3. The gear box support device 4 is a device that supports the case of the gear box with two jacks 4a when inspecting the gears of the gear train accommodated in the gear box. The cart elevating device 3 and the gear box support device 4 are installed in the underground pit UP, and both the jack 3a and the jack 4a move up and down with a predetermined stroke between the underground pit UP and the position above the floor surface FL. To do.

  The cart frame load loading device 2 will be described. FIG. 4 is a front view showing the bogie frame load loading device, and a side view thereof is shown in FIG. The carriage frame load loading device 2 includes a carriage mounting unit 10 for placing a carriage 70 of a railway vehicle having a shaft spring 76 between the axle box 73 and the carriage frame 75, and a horizontal direction along the axle direction of the carriage 70. A load-loading portion 30 that generates a pressing force F is provided on each upper end portion 21 of the pair of support columns 20 and 20 erected on both sides of the on-vehicle mounting portion 10 with respect to the RL.

  A track 11 for rolling the wheel 72 to move the carriage 70 is laid in the carriage mounting unit 10 according to the height of the floor surface FL, and the carriage 70 on the track 11 is a cart automatic transfer device. It moves in the in-vehicle mounting unit 10 by the external force applied from. Further, a carriage stopper 12 (positioning mechanism) is provided in a part of the track 11. The carriage stopper 12 is a mechanism that prevents rolling on the track 11 with respect to the wheels 72 of the carriage 70 placed on the carriage mounting unit 10 and the wheels 72 in a state of only the wheel shaft 71. 70 and the mounting position of the wheel shaft 71 are positioned.

  The support 20 will be described. FIG. 5 is an explanatory view showing a load-loading portion at the upper end portion of the column of the bogie frame load-loading device shown in FIG. 4, and an explanatory view partially showing the rotation mechanism of the bogie-frame load loading device in a sectional view, As shown in FIG. Each of the two columns 20 includes a rotation support portion 20A and a rotation support portion 20B. As shown in FIG. 4, the rotation support portion 20 </ b> A is formed in a substantially inverted L-shape that is bent 90 degrees from the vertical direction VT upward to the horizontal direction RL on the rotation support portion 20 </ b> B. . The rotation support portion 20A has an upper end portion 21 that is a horizontal portion of the substantially inverted L-shaped shape. A load load portion 30 is attached to the upper end portion 21. The rotation support portion 20B supports the rotation support portion 20A below, and the rotation support portion 20A and the rotation support portion 20B are connected via the rotation mechanism 40.

  As shown in FIGS. 4 and 6, the rotating mechanism 40 is disposed closer to the upper end 21 side closer to the load loading unit 30 than the on-vehicle mounting unit 10 with respect to the axis M along the vertical direction VT of the support column 20. In this embodiment, the load load unit 30 is capable of turning 90 degrees around the axis M. In the rotation mechanism 40, the bearing 43 and the ring gear 44 are between the rotation-side connection plate 41 attached to the lower end of the rotation support portion 20A and the rotation-side connection plate 42 attached to the upper end of the rotation support portion 20B. Are disposed.

  The inner ring of the bearing 43 is fixed to the rotation side connection plate 41, and the outer ring is fixed to the ring gear 44. The ring gear 44 is an annular external gear, and is attached to the bearing 43 in a state where the inner peripheral surface thereof and the outer peripheral surface of the outer ring of the bearing 43 are in close contact and fixed. An electric motor 46 is disposed on the rotation-side connection plate 41, and a pinion gear 45 is attached to the rotation shaft of the electric motor 46 that is inserted through the through hole of the rotation-side connection plate 41. The pinion gear 45 is formed of gear specifications that can mesh with the ring gear 44.

  In the rotation mechanism 40, when the rotational force of the electric motor 46 meshes with the pinion gear 45 and is transmitted to the ring gear 44, the outer ring of the bearing 43 rotates relative to the inner ring, whereby the rotation-side connection plate 41 is , Rotate about the axis M. Accordingly, the rotation support portion 20A of the support column 20 also rotates about the axis M, and as shown in FIG. 10, the upper end portion 21 turns in the normal rotation direction or the reverse rotation direction within a rotation range of 90 degrees. . Thus, the rotation support portion 20A rotates relative to the rotated support portion 20B based on the rotational force of the electric motor 46.

  The load loading unit 30 includes a hydraulic cylinder 31, a load cell 33, an auto switch (not shown), and the like. The load load unit 30 applies a load to the carriage frame 75 of the carriage 70 placed on the carriage mounting unit 10 to compress the shaft spring 76. The hydraulic cylinder 31 is installed on the upper end portion 21 of the rotation support portion 20A in a posture in which the rod 32 is disposed downward. The hydraulic cylinder 31 moves the rod 32 up and down by controlling the hydraulic oil pumping path with the hydraulic drive source 39 by an electromagnetic valve. In this embodiment, the lifting stroke of the rod 32 is 500 mm, and the pressure applied to the rod 32 ( The pressing force F) is a specification such as several tens of kN. A load cell 33 is attached to the rod 32 via an attachment member 34. The load cell 33 converts the load applied from the rod 32 of the hydraulic cylinder 31 into an electrical output signal by a strain gauge converter, and detects the magnitude of the load (pressing force F).

  The upper end 21 is provided with the auto switch as a switch for detecting the rising end position of the rod 32. When the auto switch detects the rising end of the rod 32, the rising rod 32 stops. Various devices such as a solenoid valve, a load cell 33, and an auto switch are electrically connected to an electric control panel (not shown) and are automatically controlled.

  Next, the slide mechanism 50 will be described. FIG. 7 is an explanatory view of the slide mechanism showing the A portion in FIG. 4 in an enlarged manner. FIG. 8 is an explanatory view showing a state in which the bogie frame is pressed by the load loading portion, and FIG. 9 shows an enlarged view of portion B in FIG. The slide mechanism 50 is a mechanism in which each of the pair of support columns 20 is erected with a structure capable of moving in the slide SL direction along the left-right direction RL, and is operated in a direction away from each other or a direction close to each other. The slide mechanism 50 is accommodated in a low floor surface UF lower than the floor surface FL, and is placed on a gantry.

  The slide mechanism 50 is provided with one air cylinder 52 and two linear guides 51. The air cylinder 52 is a rodless cylinder that moves the block-like slide table 52B relative to the upper side of the elongated cylinder tube 52A within the range of the stroke in the longitudinal direction. The cylinder has a bracket 53 attached to the slide table 52B. is there. The operation of the slide table 52B is controlled by operating an air pressure device (not shown) by automatic control using an electric control panel (not shown) to control the air pressure feeding path. The two linear guides 51 are juxtaposed with the air cylinder 52 on both sides of the air cylinder 52, and the linear guide 51 and the air cylinder 52 are arranged in parallel along the left-right direction RL.

  The lower end of the rotated support portion 20 </ b> B of the support column 20 is fixed by a support column base portion 56, and the support column base portion 56 is connected to the bracket 53 via the first support member 54. The linear guide 51 is connected to the second support member 55 fixed to the support base 56 on both sides. The column base 56 that supports the rotated support portion 20B is supported by the slide table 52B via the first support member 54 and the bracket 53 while being supported by the two linear guides 51 via the respective second support members 55. ing. As a result, when the slide table 52B moves relative to the cylinder tube 52A, the column 20 moves linearly in the slide SL direction within the range of a stroke of 850 mm while being guided by the linear guide 51. .

  In the slide mechanism 50, a slide cover 58 covers the periphery of the linear guide 51 and the air cylinder 52 over a movable range before and after the column 20, and such a precision sliding unit is externally connected to dust, drainage, oil Protects against foreign substances such as As shown in FIG. 1, since the slide mechanism 50 is accommodated in the low floor surface UF, a cover is also provided on the slide mechanism 50 at a height that eliminates a step from the floor surface FL. .

  Next, the disassembly process and assembly process of the carriage 70 will be briefly described. FIG. 11 is a flowchart for explaining the overall flow in the disassembly process of the carriage, and FIG. 12 is a flowchart for explaining the overall flow in the assembly process of the carriage.

  First, as shown in FIG. 1 and FIG. 10, each support column 20 is retracted at the retracted end position Q, and the orientation of the upper end portion 21 is in the retracted posture S toward the traveling direction FR. In the carriage 70, the shaft spring 76 is constrained by the bolt 77 and is in a compressed state. In the disassembling process, the carriage 70 is carried into the carriage mounting unit 10 by the carriage automatic transfer device, and the wheel 72 is locked by the carriage stopper 12 (S1). Next, the slide mechanism 50 advances each support column 20 to the advance end position P where the load frame 30 can press the carriage frame 75 of the carriage 70 (S2). Next, the direction of the upper end portion 21 is rotated to the operating posture R in the axle direction (left-right direction RL) (S3).

  Next, the rod 32 of the hydraulic cylinder 31 is lowered, and a pressing force F is applied to the carriage frame 75 to limit and restore the restoring force of the shaft spring 76 in the compressed state (S4). The bolt 77 is pulled out in this pressed state (S4). Thereafter, by raising the rod 32 of the hydraulic cylinder 31, the pressing force F applied to the carriage frame 75 is released (S6). Thus, the load due to the weight of the bogie frame 75 is only acting on the shaft spring 76, and the restoring force of the shaft spring 76 due to the restraint of the bolt 77 is lost. The frame 75 can be removed.

  Next, the rotation support portion 20A is rotated, and the direction of the upper end portion 21 is set to the retracted posture S (S7). Next, the slide mechanism 50 retracts the support column 20 to the retracted end position Q (S8). Next, the jack 4a of the gear box support device 4 disassembles / inspects / repairs the wheel shaft 71, the carriage frame 75, etc. while supporting the gear box case (S9). Next, in (S10), after the bogie frame 75 is lifted by a crane, the shaft spring 76 is taken out (S11).

  The assembly process will be described. When inspection and repair of the wheel shaft 71 and the bogie frame 75 are completed, various parts are assembled with the wheel shaft 71 and the bogie frame 75 (S21). Next, the shaft spring 76 is attached on the shaft box 73 of the wheel shaft 71 placed on the stand mounting unit 10 (S22). Next, in (S <b> 23), the carriage frame 75 is lifted by a crane, and a jig (not shown) for aligning the carriage frame 75 and the wheel shaft 71 is attached to the carriage frame 75. Next, while suspending the bogie frame 75, the jig is removed just before the bogie frame 75 and the wheel shaft 71 are assembled, and then the wheel shaft 71 is mounted on the shaft spring 76. (S24).

  Next, the slide mechanism 50 advances each strut 20 to the advance end position P (S25). Next, the direction of the upper end 21 is changed to the operating posture R (S26). Next, the rod 32 of the hydraulic cylinder 31 is lowered and a pressing force F is applied to the carriage frame 75 (S27). The pressing force F at this time is larger than the shared load acting on one shaft spring 76 among the load of the vehicle body actually applied on the carriage 70, and the spring length of the shaft spring 76 compressed by the suppression by the bolt 77. It is the magnitude | size of the load which can compress the axial spring 76 so that it may become shorter. Next, a pressing force F is applied to the carriage frame 75 by the hydraulic cylinder 31, and the bolt 77 is attached while the shaft spring 76 is kept pressed (S28). Thereafter, the rod 32 of the hydraulic cylinder 31 is raised to release the pressing force F applied to the carriage frame 75 (S29). As a result, the shaft spring 76 is constrained by the bolt 77.

  Next, the rotation support portion 20A is rotated to bring the upper end portion 21 into the retracted posture S (S30). Next, the slide mechanism 50 retracts the support column 20 to the retracted end position Q (S31). Next, after the wheel stopper of the wheel 72 by the carriage stopper 12 is released, the carriage 70 is carried out from the carriage mounting unit 10 to the next process by the operator (S32). Thus, the maintenance of the carriage 70 by the carriage maintenance device 1 is completed.

  As described above, according to the bogie frame load loading device 2 of the railway vehicle according to the present embodiment, the on-vehicle installation of placing the bogie 70 of the railway vehicle including the shaft spring 76 between the axle box 73 and the carriage frame 75. The load-loading portion that generates a pressing force F on each upper end portion 21 of the pair of support columns 20, 20 erected on both sides of the vehicle mounting unit 10 with respect to the left and right direction RL along the axle direction of the vehicle 10 and the vehicle 70. 30. In the bogie frame load-loading device 2 of the railway vehicle, the load load portion 30 applies a load to the bogie frame 75 of the bogie 70 placed on the on-vehicle mounting portion 10 to compress the shaft spring 76 by applying a load. The load loading unit 30 includes a rotation mechanism 40 that can turn around an axis M along the support column 20.

  With this feature, the direction of the load loading unit 30 can be changed from the operating posture R to the retracted posture S by the rotation mechanism 40. In performing the work after loading in the disassembly process of the cart 70, The bogie frame 75 can be lifted from the position of the bogie 70 placed on the section 10 with a crane directly above the bogie-mounted carriage portion 10. In addition, the direction of the load loading unit 30 can be changed from the retracted posture S to the operating posture R by the rotation mechanism 40, and in the assembly process of the carriage 70, an operation of supporting the carriage frame 75 on the axle box 73 with the axle spring 76. In doing so, the bogie frame 75 can be suspended using the crane toward the wheel shaft 71 placed on the carriage mounting portion 10. Therefore, compared with the case where the maintenance of the cart is performed using the conventional cart frame load loading device 102, if the cart 70 is maintained using the cart frame load loading device 2 of the present embodiment, the maintenance work is performed. In addition to being able to perform efficiently, work time can be shortened and workability is also improved. Therefore, the cost for maintenance can be suppressed.

  In particular, in the case of Shinkansen vehicles among railway vehicles, the number of vehicles in one train is larger than that of conventional trains, and the traveling speed is high, and the distance traveled by one operation is long. For this reason, the maintenance of the carriage 70 is frequently performed for safety, and it is an essential requirement to perform the maintenance of the carriage 70 efficiently and at low cost. In the bogie frame load loading device 2 of the present embodiment, the maintenance work of the bogie 70 that satisfies such essential requirements can be realized.

  Further, in the conventional bogie frame load loading device 102, since the column 120 is fixed, the bogie frame 75 is temporarily moved to a place away from the column 120, and the bogie frame 75 is inspected and repaired. Although space is required outside the bogie frame load load device 102, the bogie frame load load device 2 of this embodiment does not require such work space. Therefore, the entire inspection / repair space of the carriage 70 can be saved.

  Therefore, according to the bogie frame load loading device 2 of the railway vehicle according to the present embodiment, the bogie 70 is maintained by the maintenance of the bogie 70 having the shaft spring 76 between the axle box 73 and the bogie frame 75 among the railway vehicles. In the disassembling work and the assembling work, the working efficiency is improved and the shaft spring 76 can be attached and detached at low cost.

  Moreover, in the bogie frame load loading device 2 of the railway vehicle according to the present embodiment, the pair of support columns 20 and 20 are erected in a structure that can slide in the left-right direction RL (sliding direction SL) and are separated from each other, or Since it moves in the direction of approaching, on both sides in the left-right direction RL of the stand mounting unit 10, between the support column 20 and the wheel shaft 71 (or the carriage 70) located in the stand mounting unit 10, An operator's passage can be secured. Therefore, an operator who is working on the inspection and repair work on the wheel shaft 71 or the like can smoothly move through the passage without having to pass through the support column 20, so that workability is improved.

  Further, in the bogie frame load loading device 2 of the railway vehicle according to the present embodiment, the rotation mechanism 40 is provided on the column 20 and is closer to the load loading unit 30 than the vehicle mounting unit 10 in the direction of the axis M. Since the weight of the entire rotation support portion 20A including the load load portion 30 is lighter, the moment of inertia of the rigid body is reduced and the electric motor is reduced. In 46, the load load part 30 can be rotated with a smaller driving force. Moreover, in the support | pillar 20, since the rotation mechanism 40 can be installed more spaced apart from the slide mechanism 50, it becomes easy to avoid both interference in the rotation mechanism 40 and the slide mechanism 50, and the structure of both mechanisms is the same. It can be prevented from becoming complicated. Further, the foot of the worker who is walking is not caught, and the position of the rotation mechanism 40 can be a position that does not interfere with the worker.

  Moreover, in the bogie frame load-loading device 2 of the railway vehicle according to the present embodiment, the pair of support columns 20 and 20 respectively includes a rotation support portion 20A that holds the load load portion 30 and a support that supports the rotation support portion 20A below the rotation support portion 20A. The rotation support unit 20B includes the rotation support unit 20B, and the rotation support unit 20A rotates relative to the rotation support unit 20B based on the rotational force of the electric motor 46. When a hydraulic unit that obtains rotational force with a hydraulic drive source is used as the rotation mechanism, the entire device may be enlarged due to a complicated device structure such as piping of a pipe or a hose. Since the rotational force of the rotation support portion 20 </ b> A is the electric motor 46, the cart frame load load device 2 can be made compact. Further, when the hydraulic unit is used, hydraulic oil may leak to the floor when the hydraulic unit fails, but in the bogie frame load loading device 2, the electric motor 46 is used for the rotating mechanism 40. When the rotating mechanism 40 fails, the floor is not soiled with hydraulic oil, and maintenance is good.

  Moreover, even if a pair of support | pillars 20 and 20 are manufactured by the same specification, the rotation direction of the electric motor 46 of one rotation support part 20A and the rotation direction of the electric motor 46 of the other rotation support part 20A are reversed. By simply connecting with the wiring to be performed, both the rotation support portions 20A can be rotated in the same direction as viewed from the traveling direction FR, and the support column 20 does not have to be manufactured separately on the left and right, so that the cost is low.

  Further, in the bogie frame load loading device 2 of the railway vehicle according to the present embodiment, the wheel 72 of the bogie 70 placed on the car mount unit 10 is fixed to the car mount unit 10, Since the carriage stopper 12 for positioning the placement position is provided, when the carriage 70 is conveyed, the carriage 70 carried into the on-vehicle mounting unit 10 by automatic feeding by the carriage automatic conveyance device is It can be reliably prevented from moving in the in-vehicle placement unit 10.

In the above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the above-described embodiments, and can be appropriately modified and applied without departing from the gist thereof.
(1) For example, in the embodiment, the bogie frame load load device 2 is used for the bogie 70 moving on the track 11 having a predetermined track width. However, the present invention is applied to a plurality of types of carts having different track widths. A bogie frame load loading device for a railway vehicle may be used for general purposes. In this case, the position of pressing on the bogie frame may be changed by adjusting the interval between the columns for each bogie.
(2) In the embodiment, the entire flow of the disassembly process of the carriage is illustrated in the flowchart of FIG. 11, and the entire flow of the assembly process of the carriage is illustrated in the flowchart of FIG. The disassembly process of the carriage and the assembly process thereof are not limited to the present embodiment, and the order and contents of the work processes can be changed as appropriate.

(3) In the embodiment, the case where the disassembly process and the assembly process of the bogie 70 are performed using the bogie frame load loading apparatus 2 is illustrated, but the bogie frame load loading apparatus for a railway vehicle according to the present invention is In some cases, it is used only for the disassembly process of the carriage and not for the assembly process of the carriage. Therefore, in this case, each operation of the assembly process of the carriage as shown in the flowchart of FIG. 12 is not performed.

2 Cargo frame load loading device 10 Car mounted part 12 Carriage stopper (positioning mechanism)
20 support 20A rotation support portion 20B rotated support portion 21 upper end portion 30 load load portion 40 rotation mechanism 46 electric motor 70 carriage 73 axle box 75 carriage frame 76 axis spring RL left and right direction F pressing force M axis line

Claims (4)

A pair of on-vehicle mounting portions for mounting a railcar bogie equipped with a shaft spring between the axle box and the bogie frame, and a pair erected on both sides of the base mounting portion with respect to the left-right direction along the axle direction of the bogie A rail that includes a load-loading section that generates a pressing force at each upper end of the column, and compresses the shaft spring by applying a load to the bogie frame of the bogie placed on the platform mounting section by the load-loading section. In the bogie frame load loading device of the vehicle,
The load-loading portion has a rotation mechanism capable of turning around an axis along the support;
A bogie frame load-loading device for railway vehicles. In the bogie frame load loading device of the railway vehicle according to claim 1,
The pair of struts are erected in a structure that is slidable in the left-right direction, and move in a direction away from each other or in a direction close to each other
A bogie frame load-loading device for railway vehicles. In the bogie frame load loading device of the railway vehicle according to claim 1 or claim 2,
The rotation mechanism is provided on the support column, and is disposed closer to the upper end portion side of the support column closer to the load load unit than the on-vehicle mounting unit with respect to the direction of the axis.
A bogie frame load-loading device for railway vehicles. In the bogie frame load-loading device for a railway vehicle according to any one of claims 1 to 3,
Each of the pair of struts includes a rotation support portion that holds the load load portion, and a rotated support portion that supports the rotation support portion below the rotation support portion.
In the rotation mechanism, the rotation support portion rotates relative to the rotation support portion based on the rotation force of the electric motor.
A bogie frame load-loading device for railway vehicles.

Images