Arm extension system for detachable container transport vehicles

Abstract

This invention provides an arm extension system for a detachable container transport vehicle that allows for lifting operations in addition to loading and unloading containers, thereby expanding the vehicle's range of use. [Solution] The arm extension system 1 for a detachable container transport vehicle comprises an L-shaped arm 11 of a detachable container transport vehicle 10 and an extension arm 20 attached to the tip side of the L-shaped arm 11. The extension arm 20 may have a contact portion 21 that abuts against the L-shaped arm 11, an extension portion 22 attached to the contact portion 21 and extending at a predetermined angle with respect to the L-shaped arm 11, and a wire hooking portion 23 provided near the tip of the extension portion 22.

Description

Technical Field

[0001] The present invention relates to an arm extension system that extends an L-shaped arm provided on a detachable container carrier vehicle, and in addition to loading and unloading the container, can also be used for lifting work using a wire.

Background Art

[0002] Conventionally, for transporting boxes (hereinafter sometimes simply referred to as "boxes") that contain industrial waste, construction waste, earth and sand, materials, etc., vehicles called detachable container carrier vehicles are widely used. This type of vehicle uses an arm provided on the vehicle body to lift the box, load it onto the vehicle loading platform, transport it to a desired location, and then unload the box.

[0003] In a detachable container carrier vehicle, generally, a configuration is adopted in which the tip of the arm is engaged with an engaging portion on the box side, and the arm is operated by a hydraulic mechanism or the like to draw the box placed on the ground toward the vehicle side while loading it onto the loading platform. For this reason, a detachable container carrier vehicle can relatively easily load and unload boxes, and is widely used in fields such as the collection and transportation of industrial waste (see Patent Document 1 for detachable container carrier vehicles).

[0004] On the other hand, at the site, not only the transportation of the box itself but also the work of lifting, suspending, and moving heavy objects, materials, machinery, waste materials, etc. existing near the box may be required. For such work, generally, a mobile crane, a truck crane, a unique vehicle, or other lifting machinery is separately used.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, since detachable container transport vehicles are primarily designed for loading and unloading containers, their arm structure is suited to pulling containers onto the vehicle and is not necessarily suitable for handling suspended loads that require a certain working radius, like a crane. Therefore, it was difficult to use a single detachable container transport vehicle for both transporting and lifting containers.

[0007] As a result, depending on the site, problems such as an increase in the number of vehicles, rising equipment costs, difficulty securing operators, increased complexity of work processes, and insufficient workspace may arise. Furthermore, in confined spaces or sites with limited access routes, it can be difficult to deploy additional cranes, which can significantly reduce work efficiency.

[0008] Furthermore, conventional detachable container transport vehicles have practical limitations on arm length, resulting in poor access to objects located far from the vehicle and insufficient flexibility in lifting and loading positions. Consequently, in some sites, it was necessary to move the object manually or with separate machinery before loading, potentially leading to increased workload and reduced safety.

[0009] Thus, while conventional detachable container transport vehicles are suitable for transporting boxes of industrial waste, there was room for improvement in terms of functionality and operation when it came to using the arm like a crane for lifting operations.

[0010] Therefore, this invention has been made in view of these circumstances, and aims to expand the applications of detachable container transport vehicles and provide a technology that can handle both container transport and lifting operations. [Means for solving the problem]

[0011] To achieve the above objective, an arm extension system for a detachable container transport vehicle according to one aspect of the present invention comprises an L-shaped arm of the detachable container transport vehicle, and an extension arm attached to the tip side of the L-shaped arm, the extension arm having a wire hooking portion for attaching a wire near the tip of the extension arm. [Effects of the Invention]

[0012] Thus, the arm extension system for a detachable container transport vehicle of the present invention comprises an L-shaped arm of the detachable container transport vehicle and an extension arm attached to the tip of the L-shaped arm, the extension arm having a wire attachment portion for attaching a wire near the tip of the extension arm. With this configuration, since the extension arm can be added to the tip of the existing L-shaped arm, it becomes possible to lift objects that are located far from the vehicle. [Brief explanation of the drawing]

[0013] [Figure 1] This is a side view of the detachable container transport vehicle of the embodiment with the load lifted by the arm extension system. [Figure 2] This is an enlarged diagram illustrating the extension arm of the embodiment. (a) is a side view, and (b) is a front view. [Figure 3] This is a side view of the container being lifted by the detachable container transport vehicle of the embodiment. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described below with reference to the drawings. However, the components described in the following embodiments are illustrative and are not intended to limit the technical scope of the present invention to them alone. [Examples]

[0015] The embodiments of the present invention will be described below with reference to the drawings. Note that the embodiments described below are examples of the present invention, and the present invention is not limited to these embodiments.

[0016] (composition) As shown in Figures 1 and 2, the arm extension system 1 of this embodiment comprises an L-shaped arm 11 provided on a detachable container transport vehicle 10, and an extension arm 20 attached to the tip of the L-shaped arm 11. The detachable container transport vehicle 10 is designed to hook containers from above using the L-shaped arm 11 and pull them onto the trolley (see Figure 3, which will be described later).

[0017] The L-shaped arm 11 is configured in a roughly L-shape, consisting of a first arm portion 11a at the base end and a second arm portion 11b at the tip end. The base of the first arm portion 11a is fixed to the vehicle frame, and its middle portion is connected to a lift cylinder 13, which is an operating mechanism on the vehicle side. The second arm portion 11b is fixed integrally with the tip of the first arm portion 11a and extends toward the engagement hook 11c of the container 12. Therefore, the L-shaped arm 11 is raised and lowered by extending and retracting this operating mechanism (lift cylinder 13).

[0018] As shown in Figures 2(a) and (b), the extension arm 20 has a contact portion 21 that abuts against the L-shaped arm 11, an extension portion 22 attached to the contact portion 21 and extending at a predetermined angle with respect to the L-shaped arm 11, and a wire hooking portion 23 provided near the tip of the extension portion 22. In addition, the extension arm 20 is equipped with support portions 27 and 28 that support the extension portion 22, and is configured as a cantilever truss overall. The wire hooking portion 23 can be configured as a hook portion, pin portion, hole portion, shackle attachment portion, etc., which can hook the end or middle portion of the wire 30.

[0019] The attachment portion 21 is a portion that supports the extension arm 20 while positioning it with respect to the L-shaped arm 11. Further, the extension portion 22 extends in a direction that protrudes outward from the second arm portion 11b, and the angle θ2 formed by the extension portion 22 and the first arm portion 11a is set to be larger (on the obtuse angle side) than the angle θ1 formed by the second arm portion 11b and the first arm portion 11a. Thereby, the wire latching portion 23 can be disposed farther than before.

[0020] Furthermore, the extension arm 20 has an attachment structure that is detachable with respect to the L-shaped arm 11. That is, the attachment structure has a support portion 24 at the distal end side of the extension arm 20 that receives the L-shaped arm 11, a support portion 24 at the proximal end side, and a clamping portion 25 at the proximal end side that clamps and fixes the L-shaped arm 11. The clamping portion 25 includes, for example, a pair of clamping pieces 25a, 25b and a fastening bolt 26, and is fastened and fixed to the L-shaped arm 11 by tightening the fastening bolt 26.

[0021] The support portion 24 can be formed as a concave or receiving seat structure that receives the upper surface of the L-shaped arm 11 (the second arm portion 11b). Thereby, at least a part of the self-weight and the working load of the extension arm 20 can be received by the support portion 24, and while reducing the burden on the clamping portion 25, lateral displacement can be prevented and a stable attachment state can be maintained.

[0022] (Operation) Next, the operation of the present embodiment will be described. When using the extension arm 20, with the support portion 24 of the extension arm 20 engaged with the distal end side of the L-shaped arm 11, the contact portion 21 is aligned with the second arm portion 11b, and then the proximal end side is fastened and fixed using the clamping portion 25. Thereby, the extension arm 20 is held in a predetermined posture with respect to the L-shaped arm 11.

[0023] In this state, as shown in Figure 1, the wire 30 is attached to the wire attachment point 23, and the end of the wire 30 is connected to the suspended load 40. Then, by rotating or raising / lowering the L-shaped arm 11 using the lift cylinder 13, which is the operating mechanism of the detachable container transport vehicle 10, the suspended load 40 can be lifted, pulled in, or moved to a predetermined position. Because the extension arm 20 positions the wire attachment point 23 away from the vehicle, a wider working range can be secured than in conventional systems.

[0024] Furthermore, in this embodiment, the extension arm 20 is detachable, so it can be removed during normal container loading operations as shown in Figure 3. On the other hand, if lifting operations are required on-site, the extension arm 20 can be retrofitted to the existing L-shaped arm 11.

[0025] The specific structure of the wire fastening section 23, the shape of the support section 24 and the clamping section 25, the type of fastening means, the length and angle of the extension section 22, etc., can be appropriately set according to the specifications of the detachable container transport vehicle, the assumed load, the working environment, etc. For example, the clamping section 25 is not limited to a bolt fastening type, but may also be a pin connection type, clamp type, wedge type, etc.

[0026] Furthermore, the extension arm 20 may be composed of a single component or a configuration in which multiple components are joined together. A telescopic structure may be adopted that allows the length of the extension 22 to be changed in stages or continuously. In addition, multiple wire attachment points 23 may be provided so that the attachment position can be selected according to the work object or load conditions.

[0027] (effect) Next, the effects of the arm extension system 1 of the detachable container transport vehicle in this embodiment will be listed and explained.

[0028] (1) As described above, the arm extension system 1 of the detachable container transport vehicle in this embodiment is configured to include an L-shaped arm 11 of the detachable container transport vehicle 10 and an extension arm 20 attached to its tip. Therefore, the work point can be set at a location away from the vehicle by utilizing the tip of the arm of the existing detachable container transport vehicle 10. This makes it easier to handle objects that were previously difficult to reach, and expands the uses of the detachable container transport vehicle 10 to include lifting operations for suspended loads 40, in addition to loading and unloading containers 12.

[0029] (2) Furthermore, since the extension arm 20 is attached to the second arm portion 11b of the L-shaped arm 11 such that the angle between the extension arm 20 and the first arm portion 11a is greater than the angle between the second arm portion 11b and the first arm portion 11a, the tip of the extension arm 20 can be extended outward beyond the second arm portion 11b. This makes it easier to position the wire fastening portion 23 further away from the vehicle, thereby securing a larger working radius and improving accessibility to suspended loads 40 and the freedom of work at a distance from the vehicle.

[0030] (3) Furthermore, since the extension arm 20 has a mounting structure that allows it to be attached to and detached from the L-shaped arm 11, the extension arm 20 can be attached and used only when necessary, and can be removed when not needed to perform normal container loading operations. This allows for the addition of a lifting function as needed on site without compromising the basic usability of the existing detachable container transport vehicle 10, thereby improving versatility and operational efficiency.

[0031] (4) Furthermore, since the mounting structure of the extension arm 20 has a support portion 24 at the tip that receives the L-shaped arm 11 and a clamping portion 25 at the base that clamps and fixes the L-shaped arm 11, the extension arm 20 can be stably supported and fixed to the L-shaped arm 11. As a result, the support portion 24 and the clamping portion 25 can appropriately bear the weight of the extension arm 20 and the load during work, while suppressing misalignment and rattling, thereby improving the stability of the mounting state and safety during work.

[0032] (5) Furthermore, since the extension arm 20 has at least a contact portion 21 that abuts against the L-shaped arm 11 and an extension portion 22 that is attached to the contact portion 21 and extends at a predetermined angle with respect to the L-shaped arm 11, the extension portion 22 can be extended in a desired direction while maintaining an appropriate positional relationship with the L-shaped arm 11. This makes it possible to realize the extension arm 20 with a relatively simple configuration while ensuring freedom of position for the wire hooking portion 23 and effectively expanding the reach of the arm tip, thereby providing an arm extension system 1 that is excellent in terms of manufacturability and practicality.

[0033] While embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and any design modifications that do not depart from the gist of the present invention are included in the present invention.

[0034] For example, the shape, length, width, plate thickness, material, reinforcing structure, and presence and arrangement of support parts 27 and 28 of the extension arm 20 are not limited. Furthermore, the specific configurations of the contact part 21, extension part 22, wire hooking part 23, support part 24, and clamping part 25 are not limited, and various structures capable of hooking the end or middle part of the wire 30 can be adopted for the wire hooking part 23.

[0035] Furthermore, the mounting method for the extension arm 20 can be various, including mounting from above, from the side, insertion type, fitting type, and others on the L-shaped arm 11. The extension section 22 may be of a fixed length or extendable, and may be configured to extend in multiple stages. The wire fastening section 23 is not limited to a single position but can be provided in multiple positions. [Explanation of symbols]

[0036] 1. Arm extension system 10 Detachable container transport vehicle 11 L-shaped arm 11a First arm section 11b Second Arm Section 11c Engagement Hook 12 containers 13 Lift Cylinder 20 Extension Arms 21 Contact part 22 Extension 23 Wire fastening section 24 Bearing part 25 Clamping part 26 fastening bolts 30 wires 40 Suspended load

Claims

1. The L-shaped arm of the detachable container transport vehicle, An extension arm attached to the tip of the aforementioned L-shaped arm, An arm extension system for detachable container transport vehicles.

2. The L-shaped arm is configured in an L-shape from a first arm portion at the base end and a second arm portion at the tip end. The extension arm of a detachable container transport vehicle, as described in claim 1, is attached to the second arm of the L-shaped arm such that the angle between the extension arm and the first arm is greater than the angle between the second arm and the first arm.

3. The extension arm of a detachable container transport vehicle according to claim 1 or 2, wherein the extension arm has a mounting structure that allows it to be attached to and detached from the L-shaped arm.

4. The extension arm mounting structure of the extension arm comprises a support portion located at the tip end that receives the L-shaped arm, and a clamping portion located at the base end that clamps and fixes the L-shaped arm, as described in claim 3, for an arm extension system for a detachable container transport vehicle.

5. The arm extension system for a detachable container transport vehicle according to claim 4, wherein the extension arm has at least a contact portion that abuts against the L-shaped arm, and an extension portion attached to the contact portion that extends at a predetermined angle with respect to the L-shaped arm.

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