JPH0737792U - Detachment device between tilting frame and container in container handling vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] The tilting frame is operated to easily engage and disengage the hook provided at the tip of the hook with the engaging member on the front wall of the container, and to prevent shake of the container during loading and unloading work as much as possible. To do. [Structure] By tilting a tilting frame F provided on the chassis 1 and provided with a hook 10 which can be engaged with and disengaged from an engagement pin 12 of the container C, a guide roller 14 provided at a rear end of the chassis 1 causes a container C to move. In a container loading / unloading vehicle in which the container C can be loaded / unloaded between the chassis 1 and the ground E while the guide C is being guided, the hook 10 is provided with the engagement pin 1 when loading / unloading the container C.
The pin 18 is provided with a protrusion 18 that restricts the movement of 2 into the pin receiving portion 15, and a pin guide portion 17 that guides the engaging pin 12 to the pin receiving portion 15 when the container C is stacked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a tilting frame having a hook at its tip is tiltably mounted on the chassis, and a guide member for guiding the movement of a container mounted on the chassis is provided at the rear end of the chassis to secure the hook. A tilting frame in a container-carrying vehicle, which is detachably connected to an engaging member provided on the container, and allows the container to be loaded and unloaded between the chassis and the ground while the container is guided by the guide member by tilting of the tilting frame. Related to the device for engaging and disengaging with the container.

[0002]

[Prior art]

 A tilting frame provided with a hook at the tip is tiltably provided on the chassis, and a guide member for guiding the movement of a container mounted on the chassis is provided at the rear end of the chassis, and the hook is provided on the container. A container-carrying vehicle is known which is detachably connected to an engaging member and is capable of being loaded and unloaded between a chassis and the ground while the container is guided by the guide member by tilting of the tilting frame (Japanese Patent Application Laid-Open No. 2000-242242). (See Japanese Patent Laid-Open No. 55-7 2429).

[0003]

[Problems to be solved by the device]

 In the conventional container handling vehicle, in order to maintain a good connection state between the hook and the engaging member, as shown in FIG. 9 (a), the engaging member 102 is attached to the base 101b of the hook 101 during loading and unloading of the container. An arc groove-shaped member receiving portion 105 for slidably receiving is provided. On the other hand, the front part 101a of the hook 101 has an engaging jaw 103 that engages with the engaging member 102 at the tip thereof in order to facilitate the engagement / disengagement operation of the engaging member 102 and the hook 101. A linear member guide portion 104 for guiding the movement of the engaging member 102 when the containers are stacked is provided.

By the way, when the container placed on the chassis is unloaded, the tilting frame is tilted to move the container backward while lifting the front end of the container. At this time, the weight of the container, which was acting in the direction of pushing the tilting frame around the guide roller as a fulcrum, is reversed in the direction of pulling up the tilting frame when the center of gravity of the container exceeds the guide roller. Become.

In such a case, in the conventional hook 101, as shown in FIG. 9B, the engaging member 102, which has once moved to the vicinity of the engaging jaw 103 at the tip of the member guide portion 104, acts on the tilting frame. By changing the direction of the applied force, the member slides down to the member receiving portion 105 at once. This movement not only causes the container to shake greatly and causes noise during the movement, but also causes wear of the hooks, which causes fear of the workers.

In view of the above, the present invention provides an engagement / disengagement device for a tilting frame and a container in a cargo handling vehicle, which facilitates the engagement / disengagement operation of the engaging member and at the same time prevents the container from swinging as much as possible. With the goal.

[0007]

[Means for Solving the Problems]

 According to the present invention, the hook has an arc groove-shaped member receiving portion at its base for slidably receiving the engaging member when the container is unloaded, and a hook at the tip thereof for engaging the engaging member. A straight member guide portion having a matching engaging jaw to guide the movement of the engaging member when the container is loaded is provided, and a member is provided at the boundary between the member receiving portion and the member guide portion when the container is unloaded. It is characterized in that it is integrally provided with a protrusion which prevents the movement of the engaging member from the receiving portion to the member guiding portion, while allowing the movement of the engaging member from the member guiding portion to the member receiving portion.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the chassis 1 of the cargo handling vehicle V is provided with a tilting frame F that is tiltable rearward about its base end. The tilting frame F is flexibly connected to the tip end of the hoisting frame 3 via a support shaft 4 and a hoisting frame 3 pivotally supported on the rear end of the chassis 1 via a support shaft 2. It is composed of a telescopic frame 5. The telescopic frame 5 is configured by slidably fitting an L-shaped sliding member 7 on a guide member 6 and connecting an telescopic cylinder 8 between them. The hook 10 is fixed to the front end of the L-shaped sliding member 7, that is, the front end of F of the tilting frame.

A lift cylinder 9 is connected between the chassis 1 and the tilting frame F. The tilting frame F can be bent backward or tilted backward by the expansion and contraction operation of the lift cylinder 9.

An engaging pin 12 as an engaging member that can engage with the hook F is provided on a front wall surface of the container C that can be mounted on the chassis 1. The engaging pin 12 and the hook 10 constitute an engaging / disengaging device for the tilting frame and the container. The engagement pin 12 is supported in the horizontal direction via a pair of support members 11. On the bottom surface of the container C, a pair of front wheels 13a and a pair of front wheels 13b are provided at the front and rear.

A guide roller 14 as a guide member is rotatably supported coaxially with the support shaft 2 of the undulating frame 3. The container C can move on the guide roller 14.

The hook 10 according to the present invention will be described in detail with reference to FIG.

The hook 10 is integrally connected to the tip of the tilting frame F, and has a base 10a and an arm-like tip that is integrally formed with the base 10a and extends from the base 10a to the outside of the tilting frame F. And a part 10b. The base portion 10a is provided with a pin receiving portion 15 as an arc groove-shaped member receiving portion that slidably receives the engaging pin 12 when the container C is unloaded. Further, the tip portion 10b has an engaging jaw 16 which engages with the engaging pin 12 at the tip, and has a linear shape for guiding the movement of the engaging pin 12 to the pin receiving portion 15 when the container C is stacked. A pin guide portion 17 as a member guide portion is provided. At the boundary between the pin receiving portion 15 and the pin guiding portion 17, the movement of the engaging pin 12 from the pin receiving portion 15 to the pin guiding portion 17 is prevented at the time of loading and unloading the container C, while the pin receiving portion 17 receives the pin receiving portion. A protrusion 18 that allows the engagement pin 12 to move to the portion 15 is provided. The tilt frame F including the center O of the arc forming the groove of the pin receiving portion 15 and the boundary between the pin receiving portion 15 and the pin guiding portion 17, that is, the tip of the protrusion 18 and the center O. If the angle α formed by the reference plane R orthogonal to the axis P of α is set to α ≧ 35 °, the protrusion 18 prevents the engagement pin 12 from moving from the pin receiving portion 15 to the pin guide portion 17. can do. In the present embodiment, approximately α = 45 ° is set.

Next, the operation of this embodiment will be described with reference to FIGS.

In order to unload the containers C loaded on the chassis 1, first, as shown in FIG. 4A, the telescopic cylinder 8 is contracted and the L-shaped sliding member 7 is contracted and moved rearward to move the container C. Move C horizontally backwards. The rear wheel 13b of the container C leaves the chassis 1, and the bottom surface of the container C is supported by the guide roller 14. At this time, the engaging pin 12 of the container C abuts on the lowermost part of the pin receiving portion 15 in the hook F in the upright state (see FIG. 4B). The center of gravity of the container C is on the chassis 1, and the weight of the container C is supported by the front wheels 13a of the container C and the guide rollers 14 provided at the rear end of the chassis 1.

As shown in FIG. 5 (a), when the lift cylinder 9 is extended and the telescopic frame 5 is tilted rearward of the vehicle body with the support shaft 4 as a fulcrum, the container C moves rearward while lifting its front end. To do. The weight of the container C is supported by the tilting frame F and the guide roller 14, and a force acts on the tilting frame F in a direction of pushing down the tilting frame F with the guide roller 14 as a fulcrum. At this time, the engagement pin 12 gradually moves the pin receiving portion 15 toward the pin guide portion 17 (see FIG. 5B).

As shown in FIG. 6A, when the telescopic frame 5 is further tilted rearward, the center of gravity W of the container C passes over the guide roller 14, and the tilting frame is supported by the guide roller 14 until then. The weight of the container C acting in the direction of pushing down F is reversed in the direction of raising the tilting frame F and acts. That is, the container C, which has been moved rearward by the force of the tilting frame F, tries to slide down on the guide roller 14 by its own weight. At this time, the engagement pin 12 tries to move the pin receiving portion 15 to the pin guide portion 17 side to the maximum, but the protrusion 18 prevents the engagement pin 12 from moving to the pin guide portion 17. Stays in the pin receiving portion 15 (position in FIG. 6B). Then, the direction of the force applied to the tilting frame F accompanying the rearward movement of the container C causes the container C to swing, causing the engagement pin 12 to slide on the pin receiving portion 15 and the lowermost portion of the pin receiving portion 15. It moves to the vicinity of the position (position in FIG. 6B). Then, the rear wheel 13b of the container C lands on the ground E.

As shown in FIG. 7A, when the telescopic frame 5 is further tilted rearward, the container C moves rearward while sliding on the ground E via the rear wheel 13b (at this time, the rear wheel 13b). Rolling resistance is 0.25). The container C is separated from the guide roller 14, and the tilting frame F supports all the weight on the front end side of the container C. At this time, the engagement pin 12 gradually moves inside the pin receiving portion 15 toward the pin guide portion 17 side again (see FIG. 7B).

As shown in FIG. 8A, the telescopic frame 5 is tilted until both the front wheels 13a and the rear wheels 13b of the container C come into contact with the ground E. The engagement pin 12 slides on the pin receiving portion 15 and moves to a position where movement is blocked by the protrusion 18 (see FIG. 8B). Then, the container C is moved rearward to release the engagement / disengagement device, that is, the engagement between the engagement pin 12 and the hook 10.

According to the present invention, when the container C is unloaded from the chassis 1, the engaging pin 12 is prevented from moving from the pin receiving portion 15 to the pin guiding portion 17 when the container C is unloaded from the chassis 1. 12 is moving in the pin receiving portion 15, and the moving range of the engaging pin 12 is narrow. As a result, the shake of the container C that occurs when the container C is unloaded from the chassis can be suppressed as much as possible, so that the impact and noise applied to the hook 10 can be suppressed as much as possible. As a result, the worker can proceed with the work with peace of mind. It is also possible to prevent frequent sliding contact of the engagement pin 12 and suppress wear of the hook 10 and the engagement pin 12.

On the contrary, in order to load the container C placed on the ground E on the chassis 1, first, the lift cylinder 9 is extended and the tilting frame F is tilted backward while the telescopic cylinder 8 is contracted. Then, as shown in FIG. 8A, the tilting frame F is operated so that the hook 10 at the tip of the tilting frame F is engaged with the engaging pin 12 of the container C to move the tilting frame F and the container C. Link. The engagement pin 12 engages with the inside of the engagement jaw 16 at the tip of the pin guide portion 17 of the hook 10 (see FIG. 8C).

As shown in FIG. 7A, when the lift cylinder 10 is contracted and the telescopic frame 5 is tilted to the front of the vehicle body 1, the container C lifts its front end, and the rear wheel 13b lifts the ground E. Move forward. The weight of the container C is supported by the rear wheel 13b of the container C and the tilting frame F. At this time, the position of the engagement pin 12 hardly changes (FIG. 7 (c)).

As shown in FIG. 6A, when the telescopic frame 5 is further lowered to the front, the bottom surface of the container C is seated on the guide roller 14 and the rear wheel 13b of the container C is separated from the ground E. At this time, the engagement pin 12 goes over the protrusion 18 and enters the pin receiving portion 15 (position in FIG. 6C). When the telescopic frame 5 is further tilted forward, the center of gravity W of the container C passes over the guide roller 14 and the weight of the container C, which has been acting in the direction of pulling up the tilt frame F with the guide roller 14 as the fulcrum, tilts. It works by reversing the direction of pushing down the frame F. Along with this, the container C swings and the engaging pin 12 tries to move to the side of the engaging jaw 16 in the hook 10 to the maximum extent, but the protrusion 18 prevents the movement from the pin receiving portion 15 to the pin guiding portion 17. Therefore, the engagement pin 12 remains in the pin receiving portion 15 (position in FIG. 6C).

Further, the tilting frame F is tilted forward, and the front wheels 13a of the container C are grounded to the chassis 1 (see FIG. 4A). The engagement pin 12 slides in the pin receiving portion 15 and gradually moves to the lowest position of the hook 10 in the upright state (see FIGS. 5C and 4C). Then, the telescopic cylinder 8 is extended to horizontally move the container C forward. Loading of container C is completed.

In the present invention, even when the containers C are stacked, the movement of the engagement pin 12 from the pin receiving portion 15 to the pin guide portion 17 is prevented, so that the movement range of the engagement pin 12 in the hook 10 is increased. Can be restricted to a relatively narrow range, and impact and noise applied to the hook 10 and wear of the engagement pin 12 and the hook 10 can be suppressed as much as possible. However, even though the moving range of the engaging pin 12 is narrowed, the entrance of the engaging pin 12 to the hook 10 can be widened by the engaging jaw 16 at the tip of the pin guide portion 17 extending from the pin receiving portion 15. The engaging operation between the tilting frame F and the engaging pin 12 is easy.

[0027]

[Effect of device]

 According to the present invention, in a container-carrying vehicle, the hook provided at the tip of the tilting frame and the engaging member provided on the container are maintained in a good engaging state, and the engaging member of the hook is By restricting the range of movement to prevent the container from swinging during loading and unloading as much as possible, it is possible to suppress the noise caused by the impact of movement and provide an environment in which workers can proceed with their work with peace of mind. . Further, by securing an opening portion in which the engaging member can move back and forth in the hook, it is possible to facilitate the engagement / disengagement operation of the engaging member with respect to the hook. Further, it is possible to suppress wear of the engaging member and the hook.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a container handling vehicle.

FIG. 2 is a partial side view of a container handling vehicle in which a container is being unloaded.

FIG. 3 is an enlarged side view of a hook.

FIG. 4 is a schematic view showing movement of a container and a locus of an engagement pin in association with tilting of a tilting frame.

FIG. 5 is a schematic view showing movement of a container and a locus of an engagement pin accompanying tilting of a tilting frame.

FIG. 6 is a schematic view showing the movement of the container and the locus of the engagement pin accompanying the tilting of the tilting frame.

FIG. 7 is a schematic view showing the movement of the container and the locus of the engagement pin accompanying the tilting of the tilting frame.

FIG. 8 is a schematic view showing the movement of the container and the locus of the engagement pin accompanying the tilting of the tilting frame.

FIG. 9 is an enlarged side view of a conventional hook.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 10 Hook 10a Base 10b Tip 12 Engaging pin (engaging member) 14 Guide roller (guide member) 15 Pin receiving part (member receiving part) 16 Engaging jaw 17 Pin guiding part (member guiding part) 18 Projection C container E ground F tilting frame

Claims (1)

[Scope of utility model registration request] 1. A hook (10) at the tip of the chassis (1).
The tilting frame (F) provided with is provided so as to be tiltable, and a guide member (14) for guiding the movement of the container (C) mounted on the chassis (1) is provided at the rear end of the chassis (1). , The hook (10) is detachably connected to an engaging member (12) provided on the container (C), and the container (C) is guided by the tilting of the tilting frame (F). In a container-carrying vehicle capable of being loaded and unloaded between the chassis (1) and the ground (E) while being guided by the hook, the hook (10) is provided at its base (10a).
A member receiving portion (15) in the shape of an arc groove that slidably receives the engaging member (12) when the container (C) is unloaded, and at the tip (10b) thereof, the engaging member (12) at the tip. A straight member guide portion (17) for guiding the movement of the engagement member (12) when the container (C) is stacked, and further has a member receiving portion ( One member for preventing the movement of the engaging member (12) from the member receiving portion (15) to the member guide portion (17) at the boundary between the member guide portion (17) and the member guide portion (17) at the time of loading and unloading of the container (C). A tilting frame and a container in a container loading and unloading vehicle characterized by integrally comprising a protrusion (18) for allowing movement of the engagement member (12) from the guide portion (17) to the member receiving portion (15). Engagement device.