JP5881526B2 - Slag dump truck handling equipment - Google Patents

Description

  The present invention relates to a slag dump truck that transports, loads and unloads slag pots (slag pots) such as steelworks, and more particularly to a cargo handling device for a slag dump truck.

  Conventionally, as shown in FIG. 7, a loading platform 3 is connected to the rear of the cockpit 30, is swingably attached to the loading platform 3, has a hook 5 at the tip, and a set pin 6 </ b> A at the middle, A boom cylinder 12 that pivotally drives the boom 4 about the rotation shaft 8, a pot cover 32 that is pivotally supported by the mast 31, and a pot cover cylinder 33 that pivotally drives the pot cover 32. A slag dump truck 1A is known (Patent Documents 1, 2, Non-Patent Document 1, etc.). The set pin 6 </ b> A is provided so as to be able to appear and retract inside the boom 4 by hydraulic drive, and can be engaged with and disengaged from a tilting engagement portion P <b> 1 formed on the left and right of the slag pot P. Some slang dump trucks do not include the pot cover 32. Reference numeral 34 denotes an outrigger.

  In general, the slag pot P is provided with trunnion pins P2 protruding from the left and right at a position higher than the intermediate height, and a tilting engagement portion P1 is formed at a position lower than the intermediate height. In the example shown in FIGS. 7 and 8, the tilting engaging portion P <b> 1 of the slag pot P has a cylindrical shape into which the set pin 6 </ b> A is fitted, and is integrally formed to protrude from the left and right side surfaces of the slag pot P. The tilting engagement portion of the slag pot P has a cylindrical tilting engagement portion P1 as shown in FIGS. 7 and 8, and also has a shape protruding in a hook shape or hook shape as shown in FIG. There are other shapes such as the engaging portion P1a.

  In the slag dump truck 1, as shown in FIGS. 10A to 10C, the hook 5 is hooked on the trunnion pin P2 without engaging the set pin 6A with the engaging portion P1 for tilting of the slag pot P. If the boom cylinder 12 is driven and the boom 4 is driven to rotate about the rotation shaft 8, the slag pot P can be loaded onto or unloaded from the loading platform 3 while maintaining the horizontal state.

  Further, as shown in FIGS. 11A to 11D, the hook 5 is hooked on the trunnion pin P2 projecting from the left and right of the slag pot P and the set pin 6A is formed on the left and right of the slag pot P. The boom cylinder 12 is driven in the state of being engaged with the engaging portion P1, and the boom 4 is rotationally driven around the rotary shaft 8, whereby the slag pot P is tilted around the set pin 6A while being unloaded from the loading platform 3. It is designed to take a banishment posture.

JP 2002-316793 A JP 2002-67775 A

TCM Corporation website (Web page introducing slag dump trucks), [Search February 22, 2012], Internet (http://www.tcm.co.jp/products/lineup/03/02.html)

  In the conventional slag dump truck, the set pin 6A is aligned so as to engage with the tilting engaging portion P1 when the slag pot P is installed on the cargo bed 3, as shown in FIG. When the extension of the rod 12a of the boom cylinder 12 is started in a state where the set pin 6A is engaged with the tilting engagement portion P1 on the loading platform 3, the slag pot P follows the rotation trajectory of the boom 4. At the same time as it is lifted, it begins to tilt around the set pin 6A (see FIG. 11B). Usually, the draining work is performed after solidifying a high-temperature (for example, 1000 ° C. or higher) molten slag in the slag pot P by natural cooling.

  However, depending on the work site, for example, when the slag discharge pace increases due to fluctuations in the production cycle of the steelworks and it cannot wait until the slag cools and solidifies, or some slag pots are repaired and the number of slag pots is In the case where there is a shortage, an irregular case may occur in which the draining operation is started before the slag in the slag pot P is solidified. In such a case, depending on the amount of molten slag accommodated in the slag pot P, for example, the molten slag spills out at the position shown in FIG. 11B, and the molten slag is applied to the vehicle body and tires of the slag dump truck 1A. There is a risk that Therefore, in order to prevent molten slag from spilling near the vehicle, it can be dealt with by reducing the amount accommodated in the slag pot P to, for example, about half. However, if the amount of molten slag is incorrect, the molten slag spills near the vehicle. The fear remains.

  Therefore, a main object of the present invention is to provide a cargo handling device for a slag dump truck that can prevent molten slag from spilling near the vehicle when the molten slag is discharged.

  In order to achieve the above object, a slag dump truck handling apparatus according to the present invention includes a boom attached to a loading platform so as to be swingable in the front-rear direction, a hook provided at a tip of the boom, and a boom. A first set pin and a second set pin, which are detachably engaged with the tilt engaging portions provided on the left and right side surfaces of the slag pot, and serve as the tilt center of the slag pot, The trunnion pins projecting from the left and right sides of the slag pot are hooked on the hooks, and the slag pot is placed on the loading platform so as to be engaged with the tilting engaging portion of the slag pot. The second set pin has a predetermined height from the loading platform by hooking trunnion pins projecting from the left and right of the slag pot to the hook to swing the boom. In raised position, characterized in that it is arranged on the boom so as to engage the canting engagement portion of the slag pot.

  It is preferable that the second set pin further includes a mark indicating a height position at which the second set pin is engaged with the tilting engaging portion of the slag pot.

  The first set pin and the second set pin are preferably connected to a common drive cylinder via a link mechanism.

  According to the present invention, since the second set pin is engaged with the tilting engaging portion of the slag pot at the position where the slag pot is lifted to the predetermined height position, the slag pot is slag while rotating the boom to the position. The slag pot starts to tilt from the position moved to the rear of the dump truck. Therefore, when the slag is discharged in an unsolidified state, the vehicle is located at the point where the molten slag flows from the slag pot by engaging the second set pin with the tilting engaging portion of the slag pot. Therefore, it is possible to prevent the molten slag from scattering to the vehicle.

  Further, since the second set pin needs to be engaged with the engaging portion for tilting the slag pot in the air, and the operator needs to perform an engagement operation while looking for the engagement point, the second set pin and the second set pin By coexisting with the set pin, in the case of normal operation, that is, when the slag is solidified, the first set pin is engaged with the tilting engaging portion of the slag pot so that the operation burden on the operator is reduced. Can be reduced.

  Further, by providing a mark indicating the height position at which the second set pin is engaged with the tilting engaging portion of the slag pot, the engagement operation of the second set pin can be facilitated.

It is a side view which shows one Embodiment of the cargo handling apparatus of the slag dump truck which concerns on this invention. It is a side view which shows the operation state at the time of the waste work of the cargo handling apparatus of FIG. It is a principal part expanded side view which shows the change aspect of the boom cylinder of the cargo handling apparatus of FIG. It is a side view which shows the operating state of a cargo handling apparatus provided with the boom cylinder of FIG. It is a partial vertical side view which shows the 1st set pin which is a component of the cargo handling apparatus of FIG. It is a principal part perspective view which shows the change aspect of the 1st set pin which is a component of the cargo handling apparatus of the slag dump truck which concerns on this invention, and a 2nd set pin. It is a side view which shows the conventional slag dump truck and slag pot. It is a front view which shows an example of the conventional slag pot. It is a side view which shows another example of the conventional slag pot. It is a side view which shows the operation state of the cargo handling apparatus of the slag ramp truck of FIG. It is a side view which shows the operation state at the time of the discharge work of the cargo handling apparatus of the slag dump truck of FIG.

  DESCRIPTION OF EMBODIMENTS Embodiments of a slag dump truck handling device according to the present invention will be described below with reference to FIGS. The same or similar components are denoted by the same reference numerals throughout the drawings including the prior art. The slag pot is the same as the conventional one.

  FIG. 1 is a side view showing a cargo handling device 2 that is a main part of the present invention, omitting a cockpit of the slag dump truck 1. As shown in FIG. 1, the slag dump truck 1 includes a boom 4 that is swingably attached to the loading platform 3, a hook 5 that is provided at the tip of the boom 4, and a tilt that is provided on the left and right side surfaces of the slag pot P. The first set pin 6 and the second set pin 7 that are detachably engaged with the engagement portion P1 and serve as the tilting center of the slag pot P are provided.

  The boom 4 has a pair of left and right arms 9 (only one of the left and right pairs is shown in the figure) that is rotatably connected to a shaft 8 at the rear of the bed 3 and forward from the arm 9. And a cross bar 11 that couples the pair of left and right bracket portions 10 to each other. The hook 5 is provided at the free end of the arm 9.

  The boom cylinder 12 that drives the boom 4 is rotatably connected to the loading platform 3 and the boom 4. The boom cylinder 12 is a hydraulic cylinder, the tip of the piston rod 12 a is rotatably connected to the shaft 14 of the bracket 13 fixed to the boom 4, and the cylinder bottom is rotatable to the shaft 16 of the bracket 15 fixed to the loading platform 3. It is connected to. When the piston rod 12a of the boom cylinder 12 is pushed out, the boom 4 swings backward about the shaft 8, and when the piston rod 12a of the boom cylinder 12 is retracted, the boom 4 swings forward around the shaft 8.

  The first set pin 6 is a position at which the trunnion pin P2 projecting from the left and right of the slag pot P is hooked on the hook 5 and the slag pot P is placed on the loading platform 3, and the engaging portion P1 for tilting the slag pot P It is arrange | positioned at the boom 4 so that it may engage with. The first set pin 6 is disposed at the same position as the conventional set pin 6A shown in FIGS. 7, 10, and 11, and the conventional set pin 6A can also be used.

  The second set pin 7 hooks the trunnion pin P2 projecting from the left and right of the slag pot P to the hook 5 and swings the boom 4 to swing the slag pot P from the loading platform 3 to a predetermined height (for example, 500 to 600 mm). ) It is disposed on the boom 4 so as to engage with the engaging portion P1 for tilting of the slag pot P at the lifted position (position shown in FIG. 2 (b)).

  The operator visually confirms whether or not the second set pin 7 is positioned at a height position where the second set pin 7 is engaged with the tilting engaging portion P1 of the slag pot P (hereinafter referred to as “engageable height”). In order to make it easier to visually recognize the engageable height, an indicator 17 can be provided to indicate that the slag pot P is at the engageable height. For example, as shown by phantom lines in FIGS. 1 and 2, the sign 17 is provided with a belt-like plate or pole standing on the loading platform 3, and the height of the bottom surface of the slag pot P corresponding to the engageable height of the slag pot P. The height of the plate or pole can be adjusted to the position as shown in the example (see FIG. 2B), or a position indication such as an arrow can be displayed on the plate. The sign indicating that the slag pot P is at the engageable height is not limited to the example shown in FIG. 1, for example, to protect the piston rod 12 a of the boom cylinder 12 </ b> A as shown in FIG. 3. A rod cover 12c that slides on the cylinder case 12b together with the piston rod 12a is connected to the piston rod 12a, and as shown in FIG. 4, the piston rod 12a extends to a position where the slag pot P can be engaged. When the mark on the outer peripheral surface of the cylinder case 12b is aligned with the position of the rear end edge 12e in the length direction of the rod cover 12c at the time, the slag pot P is at an engageable height. It is good also as the label | marker 17a.

  As shown in FIG. 5, the first set pin 6 is slidably inserted into a through-hole 18 formed in the boom 4, and a hydraulic drive cylinder 19 attached to the boom 4 is swingably mounted. The piston rod 19a is connected via an L-shaped link 20 and a rod-shaped link 21. The L-shaped link 20 is rotatably attached to a bracket 22 fixed to the boom 4 via a shaft 23. When the piston rod 19a protrudes from the cylinder case 19b, the L-shaped link 20 swings around the shaft 23 as shown by the phantom line in FIG. 5, and the first set pin 6 is outside the boom 4 (upper side in FIG. 5). Drawn out. On the contrary, when the piston rod 19a enters the cylinder case 19b, the first set pin 6 is moved to the inside of the boom 4 (the side on which the slag pot is disposed. Extruded downward). The second set pin 7 can also have the same hydraulic drive cylinder and link mechanism as the first set pin 6.

  Drive cylinders for reciprocating the first set pin 6 and the second set pin 7 can be provided respectively. For example, as shown in FIG. 6, an L-shaped link 20 is connected by a shaft 23 and a shaft 24. By connecting a common drive cylinder 19 to the shaft 24, one drive cylinder can be provided. By such a left and right connecting link mechanism, the first set pin 6 and the second set pin 7 reciprocate simultaneously, but either one of the first set pin 6 and the second set pin 7 is tilting engaging portion P1. It is only necessary that the other one of the first set pin 6 and the second set pin 7 is configured not to interfere with the outer peripheral surface of the tilting engaging portion P1 and the slag pot P when engaged.

  The loading / unloading device 2 of the slag dump truck 1 having the above-described configuration is the same as the conventional case when the slag pot P is loaded on or unloaded from the loading platform 3 while maintaining the slag pot P horizontally. Neither the 6 nor the second set pin 7 is engaged with the tilting engaging portion P1 of the slag pot P, and the boom 4 is rotationally driven with the hook 5 hooked on the trunnion pin P2 (see FIG. 10).

  Further, in the case where the slag in the slag pot P is discharged and is a normal operation in which the slag is solidified and then discharged, the hook 5 is hooked on the trunnion pin P2 and the slag pot P is mounted on the loading platform. In this state, the first set pin 6 is engaged with the tilting engaging portion P1 and the boom 4 is driven to swing, whereby the slug pot P is tilted about the first set pin 6 while being unloaded from the loading platform 3. Let In this case, since the first set pin 6 and the conventional set pin 1A shown in FIG. 11 are substantially the same, the slag pot P moves on the same track as in FIG. That is, immediately after the start of ascent, it begins to tilt around the first set pin 6 (see FIG. 11).

  And, in the case of irregular evacuation work in which the slag in the slag pot P is discharged and the slag is discharged in a low viscosity state before the slag is solidified, the hook 5 is hooked on the trunnion pin P2. Then, from the state where the slag pot P is placed at a predetermined position of the loading platform, the boom 4 is swung without engaging the first set pin 6 with the tilting engaging portion P1, so that the slag pot P has a predetermined height (see FIG. 2 (b)), the boom 4 is temporarily stopped from swinging, and the second set is set in the tilting engaging portion P1 at this stop position. The pin 7 is engaged. With the second set pin 7 engaged with the tilting engaging portion P1, the boom cylinder 12 is driven again and the boom 4 is driven to swing, whereby the slag pot P is unloaded from the loading platform 3 and the second set is set. Tilt the pin 7 to the center to take a rejection posture. In this case, the slag pot P starts to tilt with the swing of the boom 4 from the position where the second set pin 7 is engaged with the tilting engaging portion P1. Therefore, compared to the case where the first set pin 6 is used as the tilting center, the position where the tilting starts is shifted rearward, and accordingly, the position where the molten slag spills from the slag pot P (FIG. 2C) is also moved backward. It is possible to prevent the molten slag from being scattered on the vehicle body. Comparing FIG. 2 (c) and FIG. 11 (b), it can be seen that the slug pot P has the same inclination, but FIG. 2 (c) has moved backward from the vehicle body by a distance X. .

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Slag dump truck 2 Handling apparatus 3 Loading platform 4 Boom 5 Hook 6 1st set pin 7 2nd set pin 17 Marking 19 Drive cylinder P Slag pot P1 Tilt engaging part P2 Trunnion pin

Claims (3)

A boom attached to the loading platform in a swingable manner in the front-rear direction;
A hook provided at the tip of the boom;
A first set pin and a second set pin, which are disposed on the boom and detachably engage with a tilt engaging portion provided on the left and right side surfaces of the slag pot, and serve as a tilt center of the slag pot;
The first set pin is engaged with the tilting engaging portion of the slag pot at a position where the trunnion pin protruding from the left and right of the slag pot is hooked on the hook and the slag pot is placed on the loading platform. Disposed on the boom,
The second set pin is formed at a position where the slag pot is lifted from the loading platform by hooking trunnion pins projecting from the left and right of the slag pot to the hook to swing the boom, and A cargo handling apparatus for a slag dump truck, wherein the cargo handling apparatus is disposed on the boom so as to be engaged with an engaging portion for tilting.   2. The slag dump truck loading / unloading apparatus according to claim 1, wherein the second set pin includes a mark indicating a height position at which the second set pin is engaged with a tilting engaging portion of the slag pot. 2. The slag dump truck handling apparatus according to claim 1, wherein the first set pin and the second set pin are connected to a common drive cylinder through a link mechanism.

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