JP3775821B2 - Beam projecting prevention device for unloading vehicles - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is used in the technical field of an unloading vehicle used for transporting rails and the like, and more particularly to an apparatus for preventing a beam from protruding in an unloading vehicle.
[0002]
[Prior art]
When transporting railroad rails using a mobile vehicle, as shown in FIG. 1, a plurality of unloading vehicles, that is, a truck TR ... are connected to the mobile vehicle MC using a connecting rod Y ... The rails RL are loaded and transported in a state where the rails RL are bridged on the base bases 1 of the connected trucks TR.
[0003]
Further, as shown in FIG. 1 to FIG. 3, the base table 1 is attached to the center of the upper surface of the cart TR for each of these unloading vehicles so as to be rotatable in the horizontal direction. A column 2 on which a beam 3 for the crane 4 is similarly mounted so as to be freely rotatable in the horizontal direction is erected at one end of the table 1. When loading and unloading the rails RL, first, the base table 1 is attached. After turning and locking in the target direction with the central axis 1T as a fulcrum, the rail RL is suspended from the crane 4 attached to the beam 3, and then the beam 3 is also rotated horizontally with respect to the column 2. The rail RL is moved onto the base stand 1 and finally the crane 4 is operated to carry out the unloading work of the rail RL.
[0004]
The beam 3 is set in a state parallel to the base stand 1 as shown by the solid lines in FIGS. 2 and 8 during normal rail loading / unloading. In order to improve the front-and-rear view by the operator, the beam 3 is rotated in the direction along the traveling direction of the carriage TR, that is, in the direction perpendicular to the base stage 1 as shown by the phantom lines in FIGS. It is locked by moving.
[0005]
[Problems to be solved by the invention]
However, the beam 3 is projected in the lateral direction so as to be parallel to the base 1 and the trajectory NK () of the beam tip when the base 1 is turned in the horizontal direction with the central axis 1T as a fulcrum. In FIG. 8), R = 1,500, but the beam 3 is rotated in a state of moving along the direction of travel so as to be perpendicular to the base 1 and the base 1 is rotated. The trajectory SK (see also FIG. 8) of the beam tip at the time of turning is approximately R = 2,680, which is sure to travel on the adjacent trajectory parallel beyond the vehicle limit. If the base 1 is inadvertently rotated while the beam is rotated in a right angle direction, there is a problem that an accident occurs in which the tip of the beam 3 collides with a vehicle traveling on an adjacent track.
[0006]
Therefore, the technical problem of the present invention is that when the crane beam is rotated in a direction perpendicular to the base table rotatably attached to the carriage, the rotation of the base table is restrained so that the tip of the beam is Do not make a business trip on the next track.
[0007]
[Means for Solving the Problems]
Means taken in the present invention to solve the above technical problems are as follows.
[0008]
A base base, which is horizontally long in a direction perpendicular to the traveling direction of the carriage, is attached to the upper surface of the carriage that is pulled by the motor vehicle on the track so that it can rotate. the setting was column at the beam for crane unloading vehicles pivoted operably pivotally around the column,
[0009]
(1) the base stand to the lower end of the connecting rod that connects the lock pin for locking the pivoting locks on the carriage side, and Tate設freely move up and down inside said column, the upper end of the connecting rod , the journaled freely up and down pivoting the intermediate portion to the column side, the tip as well as pivotally connected to the root end portion of the rotating lever protruding lower portion of the beam pivot part, the attach the pressing elements to the hinged portion of the beam, if the beam has been rotated around the column so as to be parallel to the base table, that the pressing element presses rotates the distal end of the pivoting lever Accordingly, the pivot lever pivots in the direction of pulling up the connecting rod together with the lock pin, unlocks the lock by the lock pin, and makes the base table rotatable with respect to the carriage, while the beam is Around the column against the above base stand When the lever is rotated in a direction perpendicular to the rotation lever, the pressing of the pressing member against the rotation lever is released, the connecting rod is moved down , and the lock pin protrudes to a position where the lock pin is locked to the carriage .
[0010]
(2) A cam plate having a cam surface having a substantially triangular cross section that is pressed by a presser attached to a pivotally attached portion of the beam is attached to the outer end of the rotating lever.
[0011]
(3) A spring that always pulls the connecting rod in the pulling direction is stretched between the column and the connecting rod.
[0012]
[Action]
Each means described in the above (1), (2) and (3) operates as follows.
[0013]
According to the means described in the above (1), when the beam is rotated around the column so as to be parallel to the base table attached to the carriage and is extended in the lateral direction, the pressing element is moved to the rotation lever. the tip by pressing the, free to pivot rotating without being locked order to rotate the pulling Ru direction to the rotation lever connecting rod with lock pin, the base platform to the lock pin and the base board There is no fear that the tip of the beam will protrude beyond the vehicle limit to the adjacent track even when turning . In addition , when the beam is rotated in the direction perpendicular to the column with respect to the base, the pressing pin releases the pressure on the tip of the rotating lever and moves the connecting rod downward, so the lock pin is locked to the carriage. since protruding position can not base table of the turning pivot, a state which is rotated to a position along the beam in the traveling direction, that is, pivoted at right angles to the beam to the base board Sometimes, it is possible to solve the problem of turning the base table by mistake and causing the beam tip to travel on the adjacent track beyond the vehicle limit.
[0014]
According to the means described in (2) above, when the beam is rotated around the column in a direction parallel to the base table, the presser has a substantially triangular cam surface attached to the tip of the rotation lever. In order to press the apex of the cam plate, the rotating lever is pressed and rotated downward to pull up the connecting rod together with the lock pin, but when the beam is rotated in the direction perpendicular to the column with respect to the base, Because the pusher is released from the cam surface of the cam plate to release the pressure, the tip of the pivot lever pivots upward to move the connecting rod down, allowing the lock pin to protrude into the locking position. To do.
[0015]
According to the means described in the above (3), since the pulling force is always applied to the connecting rod by the spring stretched between the connecting rod and the column, the pressing lever presses the rotating lever. When unwound, the connecting rod moves down to allow the lock pin to reliably protrude into the locked position.
[0016]
Since it is as mentioned above, the technical problem mentioned above can be solved by the above-mentioned means, and the problem of the above-mentioned conventional technology can be solved.
[0017]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a beam bulge prevention device in an unloading vehicle according to the present invention will be described in detail with reference to the accompanying drawings.
[0018]
2 and 3 are front views of an unloading vehicle equipped with a beam bulge prevention device according to the present invention. In particular, FIG. 2 shows a state in which the beam 3 projects laterally with respect to the traveling direction of the carriage TR. FIG. 3 shows a state in which the beam 3 is rotated along the traveling direction of the carriage TR. In these drawings, reference numeral 1 denotes a central axis 1T at the center of the upper surface of the carriage TR. The base stand 1 is mounted horizontally and freely rotatable, and the base stand 1 is formed in a horizontally long direction perpendicular to the traveling direction of the carriage TR. 1K, 1K are rail supports protruding on both sides of the upper surface of the base table 1, 1R... Are guide rollers mounted on both the left and right sides of the base table 1, and 2 is a frame 1S connected to one end of the base table 1. Columns 4a and 4b erected on the top and bottom are upper and lower brackets 5 projecting on the inner surface of the column 2 in order to horizontally support the pivotally mounted portion 3a of the beam 3 for the crane 4 so as to be horizontally rotatable. The moving support shaft 5S is a stopper for locking the beam 3 at the pivoted position, and each of the guide rollers 1R... Protrudes when necessary to guide the lateral rotation of the base 1 and retracts when not necessary. Rarely, the base 1 is mounted directly on the upper surface of the truck TR.
[0019]
In addition, 6 is a turnbuckle, 7 is a work light, 8 is a warning light that lights when the vehicle approaches, 8S is an antenna that detects the approach of the vehicle, and 9A and 9B are ON / OFF switches for the work light and the warning light 8. Show.
[0020]
Further, in the figure, reference numeral 10A denotes a presser (cam follower) attached to the bottom surface of the root end pivoting portion 3a of the beam 3 via a mounting plate 10 (stay). This presser 10A is shown in FIGS. As shown in the enlarged view of the main portion shown, the mechanism is configured to press the upper surface of the cam 11H attached to the outer end portion of the rotation lever 11 protruding from the inside of the column 2.
[0021]
The rotating lever 11 is attached to the lever inner surface 11T attached to the upper inner surface of the column 2, specifically, the lower side of the lower bracket 4b, so that the intermediate portion can be turned up and down using the shaft 11a. As shown in FIGS. 5 and 7, the cam 11H attached to the outer end of the cam 11H has a cam surface with which the above-described presser 10A is pressed and formed in a triangular shape having a substantially chevron cross section. the If you overhanging rotates around the column so as to be parallel to the base stand 1 which is mounted on the truck TR as shown in FIG. 2 Toka 3, the pushing element 10A of the beam 3 side presses the vertex of the cam 11H, As shown in FIG. 4, the rotating arm 11 is configured to rotate clockwise about a shaft 11a.
[0022]
In the figure, reference numeral 13 denotes a connecting rod provided vertically in the column 2, and the upper end of the connecting rod 13 is connected to the inner end of the rotating lever 11 by using a connecting pin 12, and Similarly, a lock pin 15 is rotatably connected to the lower end portion thereof using a connection pin 14. When the connecting rod 13 moves downward, the lock pin 15 is attached to the frame 1S as shown in FIGS. It has a structure in which the lower end portion thereof protrudes to a locking position close to the side surface TRA of the carriage TR through the provided hole 1H.
[0023]
The above connecting rod 13, the direction along the beam 3 in the traveling direction of the carriage TR as shown in FIG. 1 and FIG. 3, i.e., rotated in the perpendicular direction about the column to the base table 1 above, the pushing element 10A As shown in FIGS. 6 and 7, the cam 11H is released by the self-weight of the connecting rod 13 and the pulling action of the spring 13S (see FIGS. 5 and 7) stretched between the connecting rod 13 and the column 2. The rotating lever 11 is moved downward while rotating counterclockwise about the shaft 11a, and the lock pin 15 is configured to protrude to the side surface TRA of the carriage TR as described above. .
[0024]
When the lock pin 15 protrudes downward as described above, the lock pin 15 is locked to the side surface TRA of the cart TR even if the base table 1 is pivoted on the cart TR with the central axis 1T as a fulcrum. Therefore, when the beam 3 is rotated along the traveling direction of the carriage TR as shown in FIGS. 1 and 3, that is, the beam 3 is rotated. On the other hand, when rotating around the column in a direction perpendicular to the column, it is possible to prevent the problem that the base table 1 is pivoted and rotated so that the tip of the beam 3 travels to the adjacent track side.
[0025]
When the beam 3 is rotated in the direction parallel to the periphery of the column with respect to the base 1 as shown in FIG. 2, the lock pin 15 protruding downward as described above is again pressed as shown in FIGS. Since 10A presses the cam 11H and presses and rotates the rotating lever 11, it is pulled into the hole 1H together with the pulling of the connecting rod 13 by the rotation of the rotating lever 11, and the base table 1 is rotated. Allow movement.
[0026]
Since the beam bulge prevention device in the unloading vehicle according to the present invention is configured as described above, when the beam 3 is bulged laterally as shown in FIG. 4 and 5, since the lock pin 15 is pulled into the hole 1H, the base table 1 is freely pivoted in the target direction about the central axis 1T. Next, the crane 4 mounted on the beam 3 is used to lift the rail RL and the like, and the beam 3 is horizontally rotated so that the rail RL is loaded between the rail receivers 1K and 1K of the base stand 1, This can be lowered from the base 1.
[0027]
In addition, when each truck TR is connected to the motor vehicle MC and travels as shown in FIG. 1, the base base 1 is set and locked in a direction perpendicular to the traveling direction, and the operator's view is improved. 1 and 3, the beam 3 is rotated and set in the direction along the traveling direction as shown in FIGS. 1 and 3, but when the beam 3 is rotated in the direction perpendicular to the base 1 as described above, Since the lock pin 15 protrudes downward and locks the turning of the base 1, even if you forget to turn the beam 3 in the right angle direction and try to turn the base 1, Since it is reliably restrained, it is possible to reliably prevent the tip of the beam 3 from accidentally exceeding the vehicle limit and protruding onto the adjacent track during the unloading operation.
[0028]
【The invention's effect】
As described above, according to the beam projecting prevention device of the unloading vehicle according to the present invention, the problem that the tip of the beam exceeds the vehicle limit and travels on the adjacent track due to the turning of the base table. Therefore, it is possible to safely carry out the work of loading and unloading rails and the like using a crane suspended from the beam, and it is possible to reliably eliminate vehicle accidents due to the beam protruding.
[Brief description of the drawings]
FIG. 1 is a side view illustrating a state in which a rail is transported using an unloading vehicle equipped with a beam bulge prevention device according to the present invention.
FIG. 2 is a front view of an unloading vehicle showing a state in which a beam is projected in a lateral direction.
FIG. 3 is a front view of an unloading vehicle showing a state in which a beam is aligned in a traveling direction.
FIG. 4 is a side view illustrating the configuration of the main part of the present invention when the beam is parallel to the base table.
FIG. 5 is a front view illustrating the configuration of the main part of the present invention when the beam is parallel to the base table.
FIG. 6 is a side view illustrating the configuration of the main part of the present invention when the beam is perpendicular to the base table.
FIG. 7 is a front view illustrating the configuration of the main part of the present invention when the beam is perpendicular to the base table.
FIG. 8 is an explanatory diagram illustrating the turning state of the beam tip when the beam is parallel to the base table and at a right angle.
[Explanation of symbols]
TR truck (unloading car)
DESCRIPTION OF SYMBOLS 1 Base stand 1T Center axis 2 Column 3 Beam 3a Pivoting part 10A Presser 11 Rotating lever 11H Cam 13 Connecting rod 13S Spring 15 Lock pin

Claims (3)

A base base, which is horizontally long in a direction perpendicular to the traveling direction of the carriage, is attached to the upper surface of the carriage that is pulled by the motor vehicle on the track so that it can rotate. the setting was column at the beam for crane unloading vehicles pivoted operably pivotally around the column,
A connecting rod for the base table of a lower end portion coupled to the lock pin for locking the pivoting locks on the carriage side, and Tate設freely move up and down inside said column, the upper end of the connecting rod, The intermediate portion is pivotally supported on the column side so as to be pivotable up and down, and the tip end portion is pivotally connected to the root end portion of the pivot lever that protrudes to the lower side portion of the beam pivoting portion. wearing the moiety attached to the presser, if the beam has been rotated around the column so as to be parallel to the base table, by which the pushing element pushes pivot the distal end of the pivot lever, times The moving lever rotates in the direction of pulling up the connecting rod together with the lock pin, unlocks the lock by the lock pin, and makes the base table rotatable with respect to the carriage, while the beam is moved to the base table. right angle around the column to the If rotated in direction, characterized in that said solving the pressing of the pushing element against rotation lever caused to move downward the connecting rod and the locking pin configured to protrude at a position for engaging with the carriage Beam bulge prevention device for loading and unloading vehicles.   2. An unloading vehicle according to claim 1, wherein a cam plate having a cam surface having a substantially triangular cross section that is pressed by a presser attached to a pivotally attached portion of the beam is attached to an outer end portion of the rotating lever. Beam bulge prevention device.   2. The beam anti-projection device for an unloading vehicle according to claim 1, wherein a spring is provided between the column and the connecting rod so as to always pull the connecting rod in the pulling-down direction.

Images