Ladder for platform lifting

Abstract

To provide a ladder for loading platform lifting that is divided and reduced to a minimum when not in use and is extremely easy to assemble and integrate when in use. 【Solution means】It consists of a fixed base A having a grounding surface, a moving base B having casters 7, and a ladder member C having an appropriate number of treads 11 erected on the fixed base and the moving base. The fixed base, the moving base, and the ladder member are integrated with each other by fixing screw members 18 to form a ladder for loading platform lifting, and a reinforcing bar 14 is provided between the fixed base and the substantially middle part of the ladder member.

Description

Technical Field

[0001] The present invention relates to a ladder for lifting a loading platform for an operator to ascend and descend on the loading platform of a cargo carrier vehicle, and particularly relates to a ladder for lifting a loading platform, which is characterized in that it is easy to handle when not in use as a ladder and during other storage and transportation operations.

Background Art

[0002] When an operator loads and unloads cargo on the loading platform of a cargo carrier vehicle such as a truck or a trailer, the operator may board the loading platform to perform the work, and a ladder is used for the operator to safely board the loading platform. In particular, in a cargo carrier vehicle with a high loading platform, a ladder is essential for the operator to safely get on and off the loading platform.

[0003] The applicant provides a ladder for lifting a loading platform, which is attached to a moving platform provided with a main column attached to a fixed platform and arranged adjacent to the loading platform of a cargo carrier vehicle, a support bar provided with casters at both ends, and a connecting member connecting the support bar to the main column, and a ladder column arranged on the opposite side of the cargo carrier vehicle via the main column, and a plurality of treads provided between the main column and the ladder column. (Patent Document 1)

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The above-mentioned ladder for lifting a loading platform is necessary when an operator boards the loading platform to perform work when loading and unloading cargo, but since the whole is integrally formed by welding or the like, a large space is required for handling when not in use as a ladder and during other storage and transportation operations.

[0006] For example, when mounted on a freight vehicle such as a truck or trailer when not in use, there was a problem that it would occupy the loading space for other goods.

[0007] In view of the above circumstances, an object of the present invention is to provide a ladder for lifting a loading platform that is minimized and divided when not in use and is extremely easy to assemble and integrate when in use.

Summary of the Invention

Means for Solving the Problems

[0008] The ladder for lifting a loading platform that achieves the above object comprises a fixed base having a ground contact surface, a moving base having casters, and a ladder member having treads erected on the fixed base and the moving base, and is characterized in that the fixed base, the moving base, and the ladder member are assembled and integrated by fixing screw members respectively (Claim 1).

[0009] The ladder for lifting a loading platform of the present invention having the above configuration is minimized and divided into a fixed base, a moving base, and a ladder member when not in use. Therefore, even when mounted on a freight vehicle, it does not occupy much space and is easy to handle for other storage and transportation. And when the ladder for lifting a loading platform is required, they are assembled and integrated with fixing screw members respectively.

[0010] The ladder for lifting a loading platform of the present invention having the above configuration is, when in use, the fixed base and the moving base and the ladder member are connected and fixed by fixing screw members to be integrated, and the casters of the fixed base and the moving base are grounded to erect and support the ladder member. Also, thereafter, the movement to the required use position is easily possible by lifting the fixed base side and grounding and running the casters constituting the moving base.

[0011] One embodiment of the above invention is characterized in that a reinforcing bar is provided between the fixed base and the substantially middle part of the ladder member (Claim 2). According to this embodiment, the erection of the ladder member is further strengthened by the reinforcing bar.

Effects of the Invention

[0012] According to the present invention, when not in use as a ladder, the fixed base, the movable base, and the ladder member are divided and reduced to a minimum, and even when mounted on a luggage carrier vehicle, they do not occupy much space, and other handling such as storage and transportation is easy. In addition, when integrated as a ladder, it is possible to obtain the effect of easily integrating with a minimum number of fixing screw members without requiring many members.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] The ladder for lifting a loading platform of the present invention is composed of a fixed base A, a movable base B, and a ladder member C.

[0016] The fixed base A is a grounding stabilizing member, which is composed of a steel section bar with an L-shaped cross-section, etc., and a connecting portion 2 for fixing the movable base B and the ladder member C is provided at a substantially central portion on one side of the main grounding member 1. Further, two fixed legs 3 are provided on the opposite side of the main grounding member 1 from the connecting portion 2 to form the fixed base A. In the figure, 4 is a screw hole for assembly and integration.

[0017] The movable base B is composed of a substantially T-shaped connecting member 5, a support member 6, and casters 7. The connecting member 5 is configured to be connectable and fixable to the connecting portion 2 of the fixed base A, and casters 7 are respectively mounted at both ends of the support member 6 to form the movable base B. In the figure, 8 are screw holes for assembly and integration provided at both ends of the connecting member 5, respectively.

[0018] The ladder member C is configured by providing an appropriate number of treads 11 between the main support 9 and the ladder support 10 arranged at an interval from the main support 9. Further, a fixing member 12 for receiving the connecting member 5 that forms the movable table B and has an opening at the lower end is provided at the lower end to form the ladder member C. In the figure, 13 are screw holes for assembly integration provided at both ends of the fixing member 12, and the screw holes 13 are provided at positions that match the screw holes 8 provided in the connecting member 5 of the movable table B, respectively.

[0019] In the figure, 14 is a reinforcing bar provided at a substantially middle portion between the main grounding member 1 of the fixed table A and the ladder member C, and has screw holes 15 at both ends. Also, in the figure, 16 is an attachment portion of the reinforcing bar 14 provided on the ladder member C, and has a mounting screw hole 17.

[0020] In the present invention, the fixed table A, the movable table B, and the ladder member C are assembled and integrated by fixing screw members 18, respectively.

[0021] It is desirable that the fixing screw member 18 is easy to tighten and release. In the drawings, examples of a bolt and nut structure including washers are disclosed respectively.

[0022] The present invention having the above configuration is extremely easy to assemble and integrate when used as a ladder for lifting the loading platform, and can be easily divided and reduced to a minimum when not in use.

[0023] Regarding the assembly and integration, the connecting member 5 of the movable table B is connected to the connecting portion 2 of the fixed table A, the fixing member 12 at the lower end of the ladder member C is covered on the connecting member 5, and the fixing member 12 of the ladder member C and the connecting member 5 of the movable table B are integrally fixed by the fixing screw member 18 respectively, thereby achieving the completed state of use shown in FIG. 2.

[0024] After that, the reinforcing bar 14 may be attached between the fixed table A and the substantially middle portion of the ladder member C by the fixing screw member 18.

[0025] Next, when reducing the size by splitting from the state of being in use, the disassembly is extremely naturally performed by releasing each of the fixing screw members 18. In the figure, reference numeral 19 denotes a fixing safety rope of the ladder member C.

[0026] As described above, according to the present invention, when the ladder is not in use, it is split and reduced to the minimum of the fixed base, the movable base, and the ladder member, and even when mounted on a luggage carrier vehicle, it does not occupy much space, and other handling such as storage and transportation is easy.

Explanation of Reference Numerals

[0027] A Fixed base B Movable base C Ladder member 7 Caster 18 Fixing screw member

Claims

1. This ladder for climbing up and down a cargo platform comprises a fixed base having a contact surface, a movable base having casters, and a ladder member having treads arranged upright on the fixed base and the movable base, wherein the fixed base, movable base and ladder member are each assembled together with fixing screw members.

2. 2. A platform climbing ladder according to claim 1, characterized in that a reinforcing bar is provided between said fixed base and an approximately intermediate portion of said ladder member.

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