JPH063033Y2 - Display device for contact with mural of extension member of lift truck - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of a lift vehicle that conveys cargo to higher floors such as high-rise apartments and high-rise apartments, and particularly an extension member that extends from a trolley. The present invention relates to a guide rail wall surface contact device for a lift vehicle that indicates that the vehicle has surely contacted a wall surface or the like.

[Prior art]

With the construction of high-rise buildings, the introduction of mechanization gradually advanced from the former human power center for the loading and unloading means of freight to such high-speed buildings, and nowadays lift trucks have been developed and have taken the lead position. There is.

By the way, in such a conventional lift truck, a turntable mounted on a truck is provided with an extending member (guide rail) that is undulating and expandable, and a bucket (carrying box) is moved up and down along the guide rail to a predetermined position. It can be said that the purpose of introducing mechanization has been sufficiently achieved because the cargo is configured to be carried in and out of the destination floor, but a display means is provided to indicate that the guide rail has surely contacted the wall surface, etc. Since it has not been installed, the only way to confirm that the guide rail has come into contact with the wall surface, etc., is by visual inspection by the operator on the ground or by an assistant waiting on the upper floors facing the guide rail. The reality is that people rely on visual confirmation.

[Problems to be solved by the device]

Therefore, even though the guide rail is not in contact with the wall surface, etc., it is often judged that the guide rail is in contact with the wall by mistake, and the work of loading and unloading cargo is often started, resulting in an unexpected accident. At present, the development of a simple device that is dangerous and that can reliably detect the contact of the guide rail with the wall surface is awaited.

[Means and Actions for Solving Problems]

The present invention has been made in view of the above problems, and an object of the present invention is to improve a lift vehicle that conveys cargo to high floors such as high-rise apartments and high-rise apartments. An object of the present invention is to provide a guide rail wall surface contact device for a lift vehicle that indicates that the projecting member has surely contacted the target wall surface, etc. In a lift vehicle having a structure in which an extending member having a swingable wall surface contact roller is mounted, and a bucket (carrying box) moves up and down on the extending member, a wall surface attached to the tip of the extending member A contact detection sensor for the wall surface is provided in the vicinity of the contact roller, and the detection signal detected by the contact detection sensor is input to the display means provided at an appropriate position of the lift vehicle to indicate that the extension member has contacted the wall surface. In order to configure.

[Action]

By adopting the above configuration, it is possible to accurately grasp the contact state of the guide rail against the wall surface etc. and the securely fixed state by the operator's hand display means, so the safety of the work is improved and the work efficiency is significantly improved. To do. Also,
Since the structure is extremely simple, the cost is low.

〔Example〕

Hereinafter, one embodiment of a contact display device for contacting a wall of an extending member of a lift vehicle according to the present invention will be described in detail with reference to FIGS. 1 and 2 (a) and (b).

In the figure, 1 is a lift vehicle equipped with a display device for contacting the wall of the extension member of the lift car according to the present invention, 2 is a turntable, 3 is a main guide rail (extension member), and 4 is the main guide. A sub guide rail connected to the lower end of the rail 3, 5 is an undulating cylinder, 6 is both the guide rails 3, 4
7a is a control device for carrying out operations such as ups and downs of both guide rails 3 and 4, as well as expansion and contraction, and turning, as well as raising and lowering of the carrying box 6, and the like.
Is a control device of the operator M.

Reference numeral 8 denotes a wall surface contact sensor of the main guide rail 3 attached near the tip of the main guide rail 3, and the wall surface contact sensor 8 is a wall surface sensor as shown in FIGS. 2 (a) and 2 (b) in an enlarged manner. The limit switch 8a is configured to be turned on and off by swinging the support rod 9a of the contact roller 9, and the signal detected by the limit switch 8a is controlled by the above-mentioned control via the signal line 10 wired along the main guide rail 3. The display means 11 (configured by a pilot lamp in this embodiment) provided in the device 7 can be input. In the figure, 9b is a spring.

Hereinafter, the operation of the contact display device on the wall surface of the extension member of the lift vehicle according to the present invention will be described based on the above-described embodiment.

That is, the contact display device for the wall surface of the extension member of the lift vehicle according to the present invention is composed of the limit switch 8a which is turned on and off by the swing of the support rod 9a of the wall contact roller 9 at the tip of the main guide rail 3. A wall contact sensor 8 is provided, and a signal detected by the wall contact sensor 8 is input to a pilot lamp 11 mounted near the turntable 2. The pilot lamp 11 lights up so that the tip of the main guide rail 3 reaches a predetermined position. Since the contact with the wall surface W can be confirmed, there is no need to raise the moving box 6 in a state where the main guide rail 3 is not in contact with the wall surface W. Sex is further improved.

In the above embodiment, the limit switch 8a is used for the wall surface contact sensor 8; however, it may be configured by other detecting means, and the pilot lamp 11 is used as the display means. However, the present invention is not limited to the above-mentioned embodiment in particular.

[Effect of device]

As described in detail above, the present invention is provided with an extension member having a wall contact roller that can be undulated, expanded, contracted, and swung on a movable carriage, and that can swing at its tip. In a lift vehicle having a structure in which a bucket (carrying box) moves up and down, a contact detection sensor for a wall surface is provided in the vicinity of a wall contact roller attached to the tip of the extension member, and a detection signal detected by the contact detection sensor is provided. Since it is configured to indicate that the extension member has come into contact with the wall surface by inputting it to the display means provided at an appropriate position of the lift truck, the contact state of the guide rail with respect to the wall surface or the like and the reliable fixing state are displayed at the operator's hand. Because it is possible to accurately grasp by means,
Work safety is improved and work efficiency is significantly improved. Further, since the structure is extremely simple, it has various excellent effects such as low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a lift vehicle equipped with a display device for contacting the extension member of the lift vehicle according to the present invention, and FIG. 2 (a) is an enlargement of the same as the wall contact sensor. Similarly, the sectional view and FIG. 2B are also enlarged sectional views showing the operating state of the wall surface contact sensor. 1 ... Lifting car, 2 ... Turntable, 3 ... Main guide rail, 4 ... Sub guide rail, 5 ... Elevating cylinder, 6
... returnable case (bucket), 7 ... control device, 8 ... wall surface contact sensor, 8a ... limit switch, 9 ... wall surface contact roller, 9a ... support rod, 9b ... spring, 10 ... signal line, 11 ... pilot lamp (display means) , W ... Wall surface.

Claims (1)

[Scope of utility model registration request] 1. A movable carriage is provided with an extending member having a wall contact roller which can be undulated, extended and contracted, and swiveled, and whose tip is swingable, and a bucket (carrying box) is mounted on the extended member. )
In a lift vehicle having a structure for moving up and down, a contact detection sensor for the wall surface is provided in the vicinity of the wall contact roller attached to the tip of the extension member, and the detection signal detected by the contact detection sensor is applied to an appropriate position of the lift vehicle. A display device for contacting the wall of the extending member of a lift vehicle, wherein the display unit is configured to display the fact that the extending member is in contact with the wall surface by inputting it to a display means.