JPH04303386A - Inspection stand device for movable crane - Google Patents

Abstract

PURPOSE:To provide an inspection stand device which can be easily assembled and which can fall in an allowable width range in the transportation even as it is attached to a movable crane in which the crane body is turnably mounted on a travelling body. CONSTITUTION:Support members 5 each incorporating a receiving part 5a facing the lower end surface of a bed 1a of a crane body 1 and a support part 5b projected horizontally and outward are attached to hinges 4 which are fixed to the outer lower end part of the bed 1a, being spaced form each other in the longitudinal direction. A foot plate 6 is laid between the support members 5, and a reaction receiving part 7 adapted to strikes upon the lower end surface of the bed 1a is attached to the end part of the receiving part 5a while a means 9 for restraining the support part 5b when the support member 5 is stored along the side surface of the bed 1a. By holding the support member 5 along the side surface of the bed 1a with the use of the restraining means 9, the crane can be set in an allowable width range in transportation without removing the inspection stand device.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is a crawler crane,
This invention relates to an inspection platform device for mobile cranes such as truck cranes.

0002

2. Description of the Related Art Next, a conventional crawler crane inspection table device shown in FIGS. 4 and 5 will be described.

[0003] On the outer surface of the bed 1a of the crane main body 1, there is provided a connecting part in which an insertion groove is formed using a channel-shaped shaped steel material. The formed insertion portion 2a is inserted. The opposing plate-shaped portions of the connecting portion and the insertion portion 2a are connected by bolts (not shown). A handrail 3 is attached to the outer edge of the inspection table 2. Inspection stand 2 allows the inspector to move from the crawler track of the traveling body onto it.
This is for inspecting equipment installed on the bed 1a, such as fuel tanks and hydraulic valves.

0004

[Problems to be Solved by the Invention] Such an inspection table device takes time and effort to assemble and disassemble, and in order to keep it within the permissible transportation width during transportation, the bolts must be removed and the inspection table 2 and Hang the handrail 3 using the auxiliary crane and load it onto the truck. At the site where the inspection table device has been transported, the inspection table device is sometimes not installed due to the trouble of assembling it, which makes inspection inconvenient and dangerous.

[0005] The present invention has been made in view of the above, and it is an object of the present invention to provide an inspection table device that is easy to assemble and can be kept within an allowable transport width by simple operation while attached. purpose.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a mobile crane in which a crane body is rotatably mounted on a traveling body. A plurality of hinges are fixed at intervals, and a support member having a receiving part facing the lower end surface of the bed and a supporting part projecting horizontally to the outside is attached to the hinge, and a step board is installed between the support members. A reaction force receiving part is provided at the end of the receiving part of the support member to apply it to the lower end surface of the bed, and a reaction force receiving part is provided on the upper side surface of the bed. The invention is characterized in that it is provided with a deterrent means for deterring the parts.

[0007]

[Operation] In the assembled state, the reaction force receiving portion of the receiving portion is in contact with the lower end surface of the bed. During transportation, the support member is rotated using the hinge as a fulcrum to a position parallel to the side surface of the bed, and the support member is held at that position by the restraining means.

[0008]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
This is explained by:

A plurality of hinges 4 are fixed to the outer lower end of the bed 1a of the crane body 1 at intervals in the front-rear direction, and each hinge 4 has a receiving portion 5a facing the lower end surface of the bed 1a. A support member 5 having a support portion 5b horizontally protruding outward is fixed. A footboard 6 is installed between the support members 5 on which an inspector rides during inspection. A reaction force receiving part 7 that contacts the lower end surface of the bed 1a is provided at the end of the receiving part 5a, and a hook 8 is provided at the end of the supporting part 5b. A restraining means 9 for holding the support member 5 along the side surface of the bed 1a is attached to the upper side surface of the bed 1a. This restraining means 9 is provided with a slidable pin 9a to be hooked to the hook 8. Since the bed 1a is provided with reinforcing parts in the front-rear direction, the mounting position of the support member 5 is set so that the receiving part 5a faces each reinforcing part.

1 and 2 show the assembled state of the inspection table device, in which the support portion 5b of the support member 5 projects horizontally outward, and the reaction force receiving portion 7 of the receiving portion 5a is attached to the lower end surface of the bed 1a. It's correct. In this state, an inspector can ride on the footboard 6 and perform an inspection if necessary.

During transportation, each support member 5 is rotated to a position along the outer surface of the bed 1a, as shown in FIG.
The pin 9a of the restraining means 9 is hooked to the hook 8 to hold the support member 5 in that position. This allows the support member 5 to be kept within the allowable transport width without being removed.

When transporting and assembling at the site, the restraint by the restraining means 9 is released and the support member 5 is placed in the state shown in FIG.

[0013]

[Effects of the Invention] According to the invention described above, the inspection table device can be easily assembled, and during transportation, the inspection table device can be placed at a position along the outer surface of the bed without being removed. By rotating and holding it, it can be kept within the allowable transport width.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an assembled state of an embodiment of the present invention;

[Fig. 2] Enlarged front view of Fig. 1;

3 is a front view showing a state in which the inspection table device is held in a stored position along the outer surface of the bed from the state shown in FIG. 2,

FIG. 4 is a side view showing a conventional crawler crane inspection table device;

FIG. 5 is an enlarged front view of FIG. 4;

[Explanation of symbols]

1 Crane body 1a Bed 4 Hinge 5 Support member 5a Receiving part 5b Support part 6 Treadboard 7 Reaction force receiving part 8 Hook 9. Deterrence measures

Claims (1)

[Claims] Claim 1: In a mobile crane in which a crane body is rotatably mounted on a traveling body, a plurality of hinges are fixed to the outer lower end of the bed of the crane body at intervals in the front and back direction, and the hinges include: A supporting member having a receiving part facing the lower end of the bed and a supporting part protruding horizontally to the outside is installed, a treadle is laid between the supporting members, and the end of the receiving part of the supporting member is provided with a supporting part that extends horizontally to the outside. An inspection table characterized in that a reaction force receiving part is provided on the lower end face, and a restraining means is provided on the upper side part of the bed to restrain the support part when the support member is stored along the side surface of the bed. Device.