JPS62157786U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of a small simple crane according to the present invention, in which A is a folded state, B is a side view showing a state in which the machine height is lowered, and C is a side view showing a state in which the machine height is raised.
Figure 2 also shows the operating state of the upper mast,
A is a schematic side view of the main parts showing the collapsed state, B is a schematic side view of the main parts showing the upright state, FIG. 3 shows another embodiment of the small simple crane according to the present invention, A is the folded state, and B to F are the machine heights A side view of each changed state, FIG. 4 is a view taken along arrow A in FIG. 3A. 1...Moving trolley, 2...Swivel means, 3...Lower mast, 4...Jacket, 5, 6, 8, 9, 15,
16...Pin, 7...Middle mast, 10...Upper mast, 14...Boom, 17...Guy support, 1
8... Tensile material, 19... Guy wire, 20...
Shitte.

Amendment May 26, 1981 The name of the invention is amended as follows. Name of the invention: Small and simple crane The scope of claims for utility model registration and the brief description of the drawings are amended as follows.

[Claims for Utility Model Registration] (1) An upper mast is connected via a pin to the upper end of a middle mast which is held movably up and down by a lower mast so that the middle mast can be raised and lowered, and the middle mast is controlled to go up and down. A jack for controlling the elevation of the upper mast is attached to the lower mast to configure a mast capable of raising and lowering the middle mast and collapsing the upper mast. One end of the guy support pivoted to the rear of the upper part is connected via a tension member, and the other end of the guy support is connected to a predetermined position of the lower mast or middle mast via a guy wire, and the A small simple crane characterized in that the arrangement is such that the connection between the guy wire and each mast can be adjusted accordingly. (2) The small simple crane according to claim 1 of the utility model registration claim, characterized in that the lower mast is rotatably mounted on a movable trolley.

[Brief Description of the Drawings] Figure 1 shows an embodiment of a small simple crane according to the present invention, where A shows a folded state, B shows a low machine height state, and C shows a side view of a high machine height state. figure,
Figure 2 also shows the operating state of the upper mast,
A is a schematic side view of the main parts showing the collapsed state, B is a schematic side view of the main parts showing the upright state, FIG. 3 shows another embodiment of the small simple crane according to the present invention, A is the folded state, and B to F are the machine heights Figure 4 is a side view of each state that has been changed, Figure 4 is a view taken in the direction of arrow A in Figure 3, Figures 5 A and B are schematic side views when adjusting the rising angle of the boom, and A shows the side view when the rising angle of the boom is adjusted. A small state and B indicate a state where the rising angle of the boom is large. 1...Moving trolley, 2...Swivel means, 3...Lower mast, 4...Jacket, 5, 6, 8, 9, 15,
16...Pin, 7...Middle mast, 10...Upper mast, 14...Boom, 17...Guy support, 1
8... Tensile material, 19... Guy wire, 20...
Shitte.

Claims (1)

[Claims for Utility Model Registration] (1) An upper mast is connected via a pin to the upper end of a middle mast which is held movably up and down by a lower mast so that the middle mast can be raised and lowered, and the middle mast is controlled to go up and down. A jack for controlling the elevation of the upper mast is attached to the lower mast to constitute a telescopic and foldable mast, and a jack is attached to the tip of a boom pivoted to the front of the upper part of the upper mast and pivoted to the rear of the upper part of the upper mast. One end of the guy support is connected via a tensile member, and the other end of the guy support and a predetermined position of the lower mast or middle mast are connected via a guy wire, and the guy wire is connected in a manner corresponding to the machine height. A small simple crane characterized by being configured so that the arrangement of each mast can be adjusted. (2) A small simple crane according to claim 1 of the utility model registration claim, characterized in that the lower mast is rotatably mounted on a movable trolley.