JPH0419053B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for confirming insertion of a posture holding member in a container for loading onto a cargo handling vehicle, and more specifically, the present invention relates to a device for confirming insertion of a posture holding member into a container for loading onto a cargo handling vehicle. The present invention relates to a cargo handling device equipped with a front arm that can maintain its posture when being loaded or unloaded.

[Prior art]

Cargo handling vehicle 1 transporting container 3 shown in FIG. 3
Some vehicles are equipped with a cargo handling device 2 for loading and unloading containers onto and from the vehicle body. In order to handle the container 3 with the device 2, it is necessary to support the container, and support shafts 4 are installed on the left and right sides of the container 3.
is displayed. In order to receive the support shaft 4, a pair of left and right lift arms 5 each having a support portion 6 are provided, and are attached to the vehicle body 7 via a lift cylinder 8 and a support shaft 9 so as to be rotatable forward and backward.
A rotatable front arm 10 for maintaining the attitude of the container 3 during the forward and backward rotation of the vehicle body 7
It is located at the front center position of the The front arm 10 is formed in a dogleg shape, and a hook 11 that can be opened and closed is attached to the tip thereof, and the hook 11 supports a posture maintaining member 12 located at the upper part of the front end of the container 3. The lower end of the front arm 10 is attached to the vehicle body 7 via a support shaft 13 that is the center of rotation, and the tip 14a of the piston rod of the auxiliary cylinder 14 is connected to the front of the support shaft 13, and the other end is connected to the vehicle body 7. The front arm 10 is swingably attached to the front arm 10, and the front arm 10 rotates as the front arm 10 expands and contracts. Therefore, when loading and unloading the container 3 onto the vehicle body 7, the container 3 moves forward or backward due to the rotation of the lift arm 5, but the front arm 10
rotates together with the lift arm 5 to maintain the horizontal posture of the container 3. That is, in the case of this cargo handling device 2, as will be described later, the front arm 1
0 etc. form a parallelogram link, container 3
It has become possible to maintain this posture.

[Problem that the invention seeks to solve]

In the cargo handling device 2 as described above, the front arm 10 can maintain the horizontal attitude of the container 3, and the container 3 can be loaded and unloaded onto the vehicle body 7 in this attitude. By the way, lift arm 5
and the worker who operates the front arm 10,
The engaging and fitting work is performed while looking at the support shaft 4, lift arm 5, posture holding member 12, and hook 11 through the rear window glass 15 from the driver's seat of the cargo handling vehicle 1. At this time, a part of the hook 11 consisting of the fixed hook 11A and the swinging hook 11B and the posture holding member 12 is behind the front arm 10 as shown in FIG. It becomes impossible to clearly grasp the relative positional relationship between the two. The worker uses the posture holding member 1
2 into the recess 16, the front arm 10 is slightly rotated and the fixing hook 11A is raised and lowered, but this often leads to errors in determining whether or not the posture holding member 12 has been inserted. Therefore, undesirable situations may occur, such as the user having the illusion that the container is inserted, closing the swinging hook 11B and raising the front arm 10, or lowering the hook 11 further even though the container is already inserted, causing the container 3 to tilt. . In addition, since the width of the recess 16 relative to the diameter of the posture holding member 12 is narrow in order to improve the holding state, there is a problem in that the fitting operation becomes extremely difficult. Since the insertion work relies on visual inspection, the work requires time and effort, and the efficiency of the loading work is significantly reduced.

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to simplify the work of visually inserting the posture holding member into the hook, and to improve the efficiency of container loading work in a cargo handling vehicle. An object of the present invention is to provide a device for confirming insertion of a posture holding member in a loading container.

[Means for solving problems]

The features of the apparatus for confirming insertion of a container posture holding member according to the present invention will be explained with reference to FIGS. 1 to 3. A removable container 3 is supported by a pair of lift arms 5 provided on the left and right sides of the vehicle body 7, and the lift arm 5 is swung back and forth by the operation of a lift cylinder 8 to load and unload the container 3. In a vehicle, in order to maintain the attitude of the container 3 during loading and unloading, a front arm 10 supports an attitude holding member 12 provided at the upper front end of the container.
It is rotatably attached to the vehicle body 7. At the tip of the front arm 10, there is a fixing hook 11A into which the attitude holding member 12 of the container 3 is fitted;
A swinging hook 11B that opens and closes the recess 16 to hold and release the posture holding member 12 is provided,
On the side of the fixing hook 11A, there is a confirmation member 18 that crosses the space 17 on the side of the recess so as to contact and tilt the posture holding member 12 fitted in the recess 16.
is installed.

[Effect]

Attitude maintaining member 12 for container 3 placed on the ground
When holding the front arm 1 with the hook 11,
0 is turned backwards so that it falls toward the rear of the vehicle, and the hook 11 is brought close to the posture holding member 12. Swinging hook 11
B is rotated to open the hook, and the front arm 10 is gradually lowered to fit the posture holding member 12 into the recess 16 of the fixed hook 11A. When inserted, the posture holding member 12 comes into contact with the confirmation member 18 that crosses the recess side space 17, and the confirmation member tilts. When the operator confirms the tilting of the confirmation member, the swing hook 11B is rotated to hold the posture holding member 12. If the posture holding member 12 is not fitted into the recess 16, the confirmation member 18 will not tilt, so the operator further lowers the front arm 10. On the other hand, if the front arm 10 is fitted into the recess 16, the front arm 10 will not be lowered any further, and the container 3 can be ready for loading in a short time.

〔Effect of the invention〕

In order to maintain the attitude of the container during loading and unloading, a front arm that supports an attitude holding member provided at the upper front end of the container is rotatably attached to the vehicle body, and the tip of the front arm is , a fixed hook into which the attitude holding member of the container is inserted, and a swinging hook that opens and closes the recess to hold and release the attitude holding member,
A confirmation member is attached to the side of the fixing hook so as to touch and tilt the posture holding member fitted into the recess, so that the confirmation member crosses the space on the side of the recess.
The presence or absence of intrusion can be determined reliably and quickly by the operator's visual inspection. Therefore, the fitting operation is significantly simplified, labor is saved, and working time is shortened, and the efficiency of loading containers in a cargo handling vehicle can be significantly improved.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 3 shows a cargo handling vehicle 1 to which the present invention is applied.
As an example, a container 3 that can be freely attached to and detached from the cargo handling device 2 is shown.
can be loaded and unloaded onto the vehicle body 7.
The vehicle body 7 has a pair of left and right lift arms 5 (one arm is shown) for supporting and unloading the container 3.
is attached and supported so as to be rotatable forward and backward about a support shaft 9 fixed to the vehicle body 7.

The distal end side of the main body of the lift arm 5 is bifurcated, and the base of the lift arm 5 forms a support portion 6 that engages with a support shaft 4 extending to the left and right of the container 3 to support the container 3. The support shaft 4 is attached above the center of gravity of the container 3, and is mounted on the support part 6 during cargo handling operation. The lift arm 5 is attached to the vehicle body 7
It is designed to be rotated forward and backward by the telescoping action of a lift cylinder 8 which is swingably mounted on the shaft. The tip of each piston rod is attached to both the left and right lift arms 5 via a pin shaft 20, and when the piston rods are extended, the lift arms 5 rotate as shown by the two-dot chain line, and the front arm 10, which will be described next, is placed in a horizontal position. is held, and the container 3 is unloaded onto the ground behind the vehicle body 7 as shown by the dashed line.

On the other hand, a front arm 10 is provided at the front central position of the vehicle body 7 to maintain the attitude of the container 3 during loading and unloading. It is attached to the vehicle body 7 via a support shaft 13 and supports an attitude holding member 12 located at the upper front end of the container 3. Note that since the support shaft 13 is located below the container and the front arm 10 is formed in a dogleg shape, the rotation of the front arm 10 does not hinder the movement of the container 3. Its front arm 10
As shown in Figures 1 and 2, the tip of the
A hook 11 that can be opened and closed for supporting and releasing the posture holding member 12 is attached. The hook 11 includes a fixed hook 11A and a swinging hook 11.
B, and a hook cylinder 11C that rotates the swinging hook 11B around a pin shaft 11D. Note that the fixing hook 11A is attached to the front arm 1.
0, and its recess 16 is integrated into the swing hook 11.
It is brought into a closed state by turning B.

By the way, the lift arm 5 shown in Fig. 3 above
and a line connecting the support shafts 9 and 13 of the front arm 10 and a line connecting the support shaft 4 and the posture holding member 12 form two opposing sides of a parallelogram,
Furthermore, the line connecting the support shaft 13 and the posture holding member 12 and the line connecting the support shaft 9 and the support shaft 4 form the other two sides of the parallelogram. Therefore, when the lift arm 5 supports the container 3 and the front arm 10 holds the posture holding member 12, the container 3 is maintained in a desired horizontal posture, and at that time, the front arm 10 supports the rotation of the lift arm 5. It tilts along with the movement.

By the way, the fixing hook 11A fixed to the tip of the front arm 10 shown in FIGS. 1 and 2
, there is a confirmation member 1 that crosses the lateral space 17 of the recess.
8 is provided. In this example, in the free state, it is in the position shown by the solid line, and when it is inserted, it is in a position that is easy for the operator to see. In addition, confirmation member 1
8 may be a flexible long pole or the like, since it is sufficient to confirm that the tip of the posture holding member 12 moves and fits into the recess 16 when the posture holding member 12 comes into contact with the posture holding member 12. In this example, a long coil spring is used, and its base 18a is attached to the fixing hook 11A.
A colored marker 22 is attached to the tip of the marker. Therefore, when the posture holding member 12 fitted into the recess 16 crosses the recess side space 17 and comes into contact with the confirmation member 18, the confirmation member 18 is bent and tilted, and the marker 2 at the tip
2 is displaced. The shape is selected to be easy for the operator to identify, and another confirmation member 18 may be provided on the other side as shown by the dashed line in FIG.
Note that a plate spring may be used instead of the above-mentioned coil spring, and if a non-flexible pole is used, a helical spring or the like may be provided at the base so that the pole can be tilted.

On the other hand, in the case of the support part 6 of the lift arm 5 in which the recessed part shown in FIG. A confirmation member 25 is attached to. Therefore, when the support shaft 4 is engaged with the support part 6, the confirmation member 25 is bent by the contact with the support shaft 4, as shown in FIG. 6, and then returns to its original state when the engagement is released. It's becoming like that.

The cargo handling device 2 provided in the cargo handling vehicle 1 configured as described above can load and unload the container 3 onto the vehicle body 7 in the following manner. When loading the container 3 placed on the ground as shown in FIG. After taking the horizontal position, the cargo handling vehicle 1 is moved backward. The amount of extension of the lift cylinder 8 is adjusted as necessary to engage the support shaft 4 with the support portion 6. Since the support shaft 4 passes through the support part side space 24 and comes into contact with the confirmation member 25 as shown in FIG. 6, the confirmation member 25 is bent and tilted, displacing the marker 21. The operator can know the engagement by the displacement of the mark 21. continue,
In order to fit the posture holding member 12 into the recess 16 shown in FIG. 7, the auxiliary cylinder 14 shown in FIG. 3 is extended. When the posture holding member 12 is fitted into the recess 16, the posture holding member 12 passes through the side space 17 of the recess and comes into contact with the confirmation member 18, so that the confirmation member 18 is bent and tilted as shown in FIG. Displace. Once the operator knows that the marker 22 has been displaced to the maximum as shown in FIG.
Extend 1C and attach the swinging hook 11B to the pin shaft 11.
Rotate around D. As a result, the recess 16 is closed and the posture holding member 12 is held by the hook 11. This fitting forms a parallelogram link, so that the lift arm 5 can be connected to the lift cylinder 8.
When the front arm 10 is rotated forward in the direction of arrow 27, the front arm 10, which is in a free state, is rotated forward.
The container 3 is loaded onto the vehicle body 7 while maintaining a horizontal attitude.

In this way, the engagement of the support shaft 4 with the support part 6 and the fitting of the posture holding member 12 into the recess 16 can be confirmed by the displacement of the indicators 21 and 22, so that the loading operation of the container can be improved. Preparation is significantly simplified and efficiency can be improved. In addition, lower the container 3 to the ground, open the hook 11, raise the front arm 10 a little, and then
After removing the posture holding member 12 from the vehicle body 1, the vehicle body 7 is moved forward slightly to remove the support shaft 4 from the support portion 6, and the bent confirmation members 18 and 25 return to their original states. After confirming this, if the vehicle body 7 is moved forward, the container 3 is separated from the cargo handling device 2.

[Brief explanation of drawings]

FIG. 1 is a side view of a front arm equipped with a confirmation member, FIG. 2 is a view taken along the - line in FIG. 5 is a side view of the upper end of the lift arm provided with the confirmation member; FIG. 5 is a view taken along the - arrow in FIG. 4; FIG. 9 to 9 are operating state diagrams of the front arm equipped with a confirmation member, and FIG. 10 is a state diagram of the front arm rotated backward as seen through the window. 1...Cargo handling vehicle, 3...Container, 5...Lift arm, 7...Car body, 8...Lift cylinder,
DESCRIPTION OF SYMBOLS 10... Front arm, 11A... Fixed hook, 11B... Swinging hook, 12... Posture holding member, 16... Recess, 17... Recess side space, 18
...Confirmation parts.

Claims (1)

[Claims] 1. A removable container is supported by a pair of lift arms provided on the left and right sides of the vehicle body, and the lift arms are swung back and forth by the operation of a lift cylinder to load and unload the container. In a cargo handling vehicle, in order to maintain the posture of a container during loading and unloading, a front arm is rotatably attached to the vehicle body to support a posture holding member provided at the top of the front end of the container. , a fixed hook into which the attitude holding member of the container is fitted, and a swinging hook which opens and closes the recess to hold and release the attitude holding member; An apparatus for confirming insertion of a posture holding member in a cargo handling vehicle loading container, characterized in that a confirmation member is attached so as to cross the space on the side of the recess so as to contact and tilt the posture holding member.