JPH0144486Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a slat conveyor having an attachment for mounting on a vehicle.

(Prior art) Conventionally, in a slat conveyor with an attachment installed in a truck assembly line, the height of the attachment is determined by the height of the attachment, which is determined by the height of the attachment, the height of the attachment, the assembly of the undercarriage parts to the vehicle frame before the installation of the cabin, the installation of the cabin, and the height of the attachment. This design has been taken into consideration for the assembly of lower parts on both sides of the vehicle. Furthermore, in order to perform some of the work inside the engine room, a step stool is placed on the conveyor at the front of the vehicle. This work is difficult to perform depending on the vehicle type after the vehicle is transferred from a slat conveyor with an attachment to a slat conveyor without an attachment. For this reason, this work is performed using a step stool when the vehicle is placed on a slat conveyor with an attachment and the height of the vehicle's engine room is constant.

(Problem that the invention aims to solve) However, this had the problem that the step stool had to be carried every time the work was done, making the work complicated.

The object of this invention is to provide a slat conveyor with an attachment that has a step stool that can be set in a use state with a single operation and that can be automatically retracted by its own weight when not needed.

(Means for Solving the Problems) The slat conveyor with an attachment of the present invention is constructed as follows.

That is, the step stool is provided with a vehicle mounting attachment that is positioned substantially vertically when the conveyor is in a substantially horizontal state, and the step stool is rotatably assembled to the attachment, with the tip of the attachment facing upward. At times, it can be pivoted by its own weight to a substantially horizontal use state, and when the tip of the attachment is facing downward, it can be pivoted by its own weight to a substantially vertical storage state.

Further, the step stool stopper fixed to the attachment is capable of receiving the step stool rotated to the use state. Similarly, the step lock, which is attached to the attachment so as to be slidable in the vertical direction, locks the lever at the time when the tip of the attachment changes from downward to upward as the conveyor moves. It is configured to slide under its own weight to a position where it is locked in the stored state.

(Function) According to the above structure, when the tip of the attachment is facing upward, that is, when an assembled vehicle is placed on the attachment, simply sliding the step lock upward will return the attachment to the stored state. The locked step stool will be unlocked. Therefore, this step stool is rotated by its own weight to the above-mentioned use state, and is held in that state by being received by the above-mentioned step stopper.

The step stool that has been rotated to the use state is turned upside down by the movement of the conveyor, and the tip of the attachment points downward, so that the step stool is rotated by its own weight to the stored state. When the tip of the attachment turns upward again, the step lock slides to lock the step in the stowed state before the step is pivoted into use. Thereafter, the step stool is held in the retracted state until the operator slides the step lock upward as described above.

(Example) This invention will be described below based on drawings showing examples. FIG. 1 is a longitudinal sectional view of an embodiment of this invention. Two attachments 2 are vertically erected and fixed at a constant interval in the width direction of a slat conveyor 1 with attachments. Between attachments 2, two cross members 3
Another cross member, which serves as a step stopper 4, is welded to the ladder bridge as shown in Figure 2. A guide bracket 5 is fixed to each of the two cross members 3.
Guide holes 5a are provided at the tips of these two guide brackets 5, into which the shaft 6 is slidably inserted. The lower end of the shaft 6 has an end
Plate 7 is fixed with bolts 8. Above the center of the shaft 6 are a grip 9, a step lock 10, and a cross member stopper 1.
A subassembly 12 consisting of 1 is fixed by welding. Therefore, although the shaft 6 slides up and down, it does not come out. Reference numeral 13 denotes a step stool that can be rotated from a substantially vertical storage state to a substantially horizontal use state. At both ends of the step stopper 4,
An attachment side bearing 14 is welded, and step side bearings 15 are also provided on both sides of the step stool 13 by welding. A shaft 16 is passed through the attachment side bearing 14 and the step stool side bearing 15 so as to skew them. Both ends of this shaft 16 are
Since the end plate is fixed, it will not come off laterally. The step stool 13 can be moved upward by pulling the grip 9 upward from the vertical position.
The footstool lock 10 is removed from the footstool 13, rotates around the shaft 16, and the footstool 13 hits the footstool stopper 4 and stops. The cross member receiver 17 receives a front cross member (not shown) of the vehicle frame and is welded to the attachment 2. cross member
The stopper 11 and the shaft 6 are used for positioning when mounting the vehicle frame on the attachment 2.

As shown in FIG. 3, the step stool 13 configured as described above is used when working in the engine room after a cabin is mounted on the attachment 2 of the conveyor 1 with an attachment in a truck assembly line. . At this time, the worker holds the grip 9, and the step stool lock 10 is attached to the step stool 13.
Pull upward until it comes off. With this one-time operation, the step stool 13 rotates from the vertical position about the shaft 16, hits the step stopper 4, and stops in the horizontal position. When the operator confirms that the step stool 13 is released from the step lock 10, he releases his hand from the grip 9. The shaft 6 stops when the subassembly 12 hits the upper guide bracket 5. In this state, the step stool 13 can be used.

When the work in the engine room is finished, the step stool 13 can be left as it is. When the vehicle transfers from the conveyor 1 with an attachment to the slat conveyor without an attachment (not shown) and the conveyor 1 with an attachment goes under the floor (not shown), the attachment 2 also goes under the floor and becomes upside down. Become. During this time, the step stool 13 rotates under its own weight and becomes vertical, and the subassembly 12 comes to the lowest position. As conveyor 1 begins to rise above the floor,
The step stool 13 also rises while remaining parallel to the attachment 2. Then, just before the tip of the attachment 2 is turned upward and the step stool 13 is rotated to the use state, the subassembly 12 is lowered,
The step stool 13 is locked by the step stool lock 10 and is in the stored state. By keeping the step stool 13 in the retracted state until after the cabin is installed, it becomes easier to assemble the suspension to the vehicle frame and work around the front of the vehicle when the cabin is installed.

(Effects of the invention) The present invention enables the step stool attached to the conveyor attachment to be brought into use with a single touch operation of the step lock, which improves work efficiency and improves workability, unlike the conventional case where the step stool was carried to the point of use. In addition, if the step stool in use is left to move on the conveyor, it will automatically be brought into the stored state and maintained in that state. Therefore, the step stool does not get in the way when assembling the suspension parts of the vehicle frame in the next process, and the work can be carried out in the same way as in the normal case.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; FIG. 1 is a sectional view taken along the line A--A in FIG. 2, FIG. 2 is a front view, and FIG. 3 is an explanatory view of the operation. 2... Attachment, 6... Shaft, 10
... Springboard lock, 13... Springboard, 16... Shaft.

Claims (1)

[Claims for Utility Model Registration] A slat conveyor equipped with an attachment for mounting on a vehicle that is positioned substantially vertically when the conveyor is in a substantially horizontal state, the slat conveyor being rotatably attached to the attachment, a step stool that rotates by its own weight to a substantially horizontal use state when the tip of the attachment faces upward, and pivots by its own weight to a substantially vertical storage condition when the tip of the attachment points downward; and the attachment; a step stool stopper which is fixed to and receives the step stool rotated to the above-mentioned use state; and a step lock which slides by its own weight to a position where the step lock is locked in a stowed state prior to rotation of said step at the time of said step change.