JPS58101921A - Dropper of weight for consolidation of ground - Google Patents

Abstract

PURPOSE:To easily and repeatedly drop a weight from places by providing two inducing ropes longer than the top length of a boom above the ground and a rope laying device with a roller and a rocking rope. CONSTITUTION:Two guide ropes 43 whose one ends are fixed horizontally to a weight 40 at an interval and the other ends are fixed the tip of a boom 2 through a guide provided with a spacing horizontally to a weight 7 and a clamper 10, having a length longer than the top length above the ground of the boom, are provided. Then, a rope laying device 44 having a tentionally and rotatably connected roller 45 and a rocking rope 46 fixed to the top of a support bar 48 whose one end is fixed to the holding frame 47 of the roller 45 and the other end is fixed to a crane body 1 is also provided. Thus, a weight clamper can go down under the guidance of the guide rope and can exactly grasp the wieght, and thereby the weight can be easily repeatedly dropped from high places.

Description

DETAILED DESCRIPTION OF THE INVENTION In order to consolidate the ground, the present invention uses a mobile crane whose boom is movably supported by the crane body to repeatedly drop a ground consolidation mold from a high place. Concerning a device for dropping a consolidation weight.

Conventional ground consolidation weight dropping devices have one end of the main rope of the crane attached to the top of the seven-weight weight, and the other end wrapped around the main rope drum provided on the base of the crane through the sheave at the end of the crane boom. There is a model in which the weight is lifted to a desired height by winding the main rope around the drum, and then releasing the clutch of the drum and letting it drop. If the fall height 21 of The resistance from the drum and sheave increases, reducing the falling speed of the weight, which limits the upper limit of the falling height.

In addition, "%j [56-11372 No.
The "ground consolidation weight dropping device" unwinds the king rose from the main rope drum by the Erows unwinding device when the weight is gripped by the weight clamping device, and unwinds the king rose from the main rope drum, The main rope is drawn out to the side by the required length between the main rope and the weight, and the problem often arises in that it takes an extra time to draw out the main rope to the side.

The present invention has been made in order to solve the above-mentioned problems, and includes guide portions each having one end fixed to a weight at intervals in the horizontal direction and provided on the weight clamping device at intervals in the horizontal direction. The guide rope has two guide ropes which are passed through, the other end is fixed to the tip of the boom, and whose length is longer than the ground height of the tip of the boom, and the guide rope is pulled between the weight and the weight frang device. q linked freely and freely transferable
- a rope tensioning device having a swinging rope fixed to the tip of the support rod, one end of which is fixed to the holding rod of the cooler and the other end fixed to the crane base; The clamping device descends using the guide rope as a guide to securely grip the weight, and allows the weight to be easily dropped repeatedly from a high place.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a ground consolidation weight dropping device according to the present invention will be described below with reference to FIGS. 1 to 5.

In Fig. 1, 1rj is a base of a mobile crane, a boom 2 is pivoted around a pivot point 60 on the base so that it can be raised and lowered, and a main rope tip sheave 4 and an auxiliary rope tip are attached to the tip of the boom 2. A sheave 5 is rotatably supported, and a main rope drum 6 and an auxiliary rope drum 7 are provided on the base of the crane.

From the 1st wJ! In Figure s5, 10 is a weight clamp device for gripping and releasing the weight, and the weight flang device includes an intermediate support member 11, a frame 12, and a guide portion for guiding the guide rope. It is wound around the auxiliary rope drum 7 via the movable sheave 67 and the tip sheave 5 at the tip of the boom, and when the auxiliary rope drum 7 is activated and the release rope 61 is pulled up, the links connected to it are Since the upper ends of the crank pawls 60 are pulled upward and the lower ends of the links are moved inwardly, the tips of the crank pawls 14 spread outward. Conversely, when the main rope drum 6 is operated to pull up the main rope 21, the release rope 61 is loosened and closed to the clamp claw 14 by the force of the spring 29.

40 is a ground consolidation weight, above the main body 41,
That is, a gripping portion 42 is fixed to the top.

Reference numeral 46 denotes a pair of two guiding ropes, each of which has one end fixed to the weight 40 at a distance in the horizontal direction.
．． 25 and between guide sheep 26 and 27, the other end is fixed to the tip of the boom 2, and its length is the same as that of the boom 2.
The guide rope 46 is longer than the height above the ground at the tip of the guide rope 46, and is a trap so that the guide rope 46 can be tightened or loosened by raising and lowering the boom 2 when the weight 40 is on the ground. By tensioning the guide rope 46 in a straight line from the fixed point of the weight 40 to which one end is fixed toward the guide portion of the weight crank device [100], the weight clamp device 10 is guided and lowered, and the weight 40 can be grasped accurately.

44 is a rope stretching device, which has a roller 45 and a swinging rope 46, and the roller 45 is connected to the guide rope 46 between the weight 40 and the weight clamping device 100 so as to be tensionable and transferable; Roller 4 on swinging lobe 46
One end is fixed to the holding frame 47 of 5, and the other end is fixed to the crane base 1
It is fixed to the tip of a support rod 48 fixed to the. The length of the swinging rope 46 and the height (m) of the tip of the support rod 48 do not interfere with the tensioning of the guiding rope 46 in a straight line when the weight 40 is at the falling point, and the length of the swinging rope 46 does not interfere with the tensioning of the guide rope 46 in a straight line when the weight 40 is at the falling point. When the guide rope 46 is at a predetermined height released by the weight clamp device 10, the guide rope 46 is bent by the rope stretching device 44, and the length of the guide rope 46 between the weight 40 and the roller 45 is adjusted to the position of the roller 45. and the weight 40 at the point of fall.
The weight 40 is set to be extended longer than the distance between the two, thereby allowing the weight 40 to fall freely.

Reference numeral 49 denotes a pair of poom recoil prevention ropes, the upper ends of which are connected to both sides of the back of the weight clamping device 10, and the lower ends of each of which are connected to a predetermined position slightly behind the tip of the support rod 48. When the weight clamp device 10 releases the weight 40 at a predetermined ground height, the poom 2
This prevents the weight clamping device 10 from swinging greatly due to the reaction.

Next, the operation of the first embodiment of the weight dropping device according to the present invention will be explained. First, as shown in FIG. 6A, the weight clamp device 10 is suspended from the tip coupe 5 of the poom 2 by the auxiliary lobe 66, and the clamp claw 14 is in an open state at a predetermined weight fall height. It is assumed that the weight 40 has fallen onto the ground and is loosely attached to the guide rope 43 and extends from the tip of the pool 2 to the weight @40.

When the guide rope 43 is tensed and the auxiliary rope 56 is unwound by the auxiliary rope drum 7 while the main rope 21 is loosened, the weight clamp device 10 tightens the guide rope 43.
The weight clamping device 1o is guided by the spring 29 to engage the clamp claw 14t with the gripping portion 42 of the weight, thereby gripping the weight.

Next, as shown in FIG. 6C, the pool 2 is raised to the state shown in FIG. 6A, that is, to the position of a predetermined weight fall height, in which the weight 40t is raised. The guide lobe 46 is then extended in a progressively curved manner by the rollers 45 of the four-prong extension device 44.

Next, as shown in FIG. 6D, when the weight @4o is raised to a predetermined height, the table extending device 44 fully extends the guiding lobe 45, and the weight held by the weight clamping device 10 The length of the guide rope between the roller 40 and the roller 45 of the rope tensioning device is the length between the roller 45 position and the weight 40 at the falling point.When the release rope 51 of the device 10 is pulled up and the main rope 21 is loosened, the link 50 is Clamp claw 1 due to the action
4 opens and releases the weight 40. The weight clamping device remains held at that height, and the guiding lobe 46 has room to allow the weight to fall without any resistance, and the poom 2 rises until the anti-recoil rope 49 is taut. However, after preventing the poom and clamping device from swinging too much, it immediately returns to the state shown in FIG. 6A. By repeating these operations, the weight is dropped repeatedly.

Next, a second embodiment of the present invention will be explained with reference to FIGS. However, in the second embodiment, the upper end of the guide rope 45 elastically guides the weight clamping device 10 from the fixed point of the weight 40 to which one end of the guide rope is fixed. The length of the guiding rope 43 can be increased or decreased by the tensioning device 51 that tensions the guiding rope 43 in a straight line toward the end. Therefore, in the second embodiment, compared to the first embodiment, there is no need to raise the poom 2t when tensioning the guide rope 46, so the time required for this is shortened and the operation is easier.

Next, a third embodiment of the present invention will be described with reference to FIG. 9. In the first embodiment described above, the upper end of the guide rope is directly fixed to the tip of the pool, and in the second embodiment, the upper end of the guide rope is elastically tensioned in a straight line by a spring. In the third embodiment, the upper end of the guide rope 45 branches into two, and one upper end is attached to the tip of the pool 2.
The other upper end is attached to a tensioning device 51 that elastically tensions the guide rope using a spring. FIG. 9 shows a state in which the weight is at the lower point in the sixth embodiment of the present invention. Part side of the weight dropping device showing 1 [ii
This is Figure 46.
481 ... Crane base
492 ・・・ Boom
514 ... Main rope end sheave 5 ... Auxiliary rope end sheave 6 ... Main rope drum 7 ... Auxiliary rope drum 10 ... Weight clamp device 14 ... Clamp claw 20 ... Main hook 21 ... Main rope 24 ... Guide 7-bu 61 ... Release rope 65 ... Auxiliary hook 66 ... Auxiliary row) 40 ... Weight for ground consolidation 46 ...・ Guide rope 44 ・ Rope extension device 95- I ・ Loaf − ・ Swing rope ・ Support rod ・ Recoil prevention rope ・ Tension device patent applicant Ryutomi Yoritomi EA Exit 〕shi bL group -''ノ] and random 1'' mξ plate 97- Fig. 2

Claims (1)

[Scope of Claims] (Re-boom) A ground consolidation weight dropping device in which a ground consolidation weight is repeatedly dropped from a high place by a mobile crane whose boom is pivotally supported on a crane base so that the weight can be raised and lowered, A weight clamp device for gripping and releasing the gripping portion at the top is suspended from the tip of the zoom so as to be able to rise and fall freely, and one end of each is fixed to the weight at intervals in the horizontal direction. Two rods whose other ends are fixed to the tip of the boom through guide portions provided at horizontal intervals on the weight clamp device, and whose lengths are longer than the ground clearance of the tip of the boom. A roller having a guide rope, which is connected to the guide rope in a tensile and removable manner between the weight and the weight crank device, and a rocker having one end fixed to a holding frame of the roller. the length of the swinging rope and the position of the tip of the support rod are such that the guide rope is tensioned in a straight line when the weight is at the falling point; When the guide rope is unobstructed and is at a predetermined height where the weight is released by the weight clamping device, the guide rope is bent by the rope tensioning device to tighten the guide rope between the weight and the roller. A weight dropping device for soil consolidation, characterized in that the length of is set to be extended longer than the distance between the position of the roller and the weight marked # at the falling point. (2) Boom In a ground consolidation weight dropping device in which a ground consolidation type @ is repeatedly dropped from a high place by a mobile crane pivotally supported on a crane base so as to be able to raise and lower, the top of the weight is gripped by a grip S5. A weight clamping device for lifting and releasing the weight is suspended from the tip of the boom so as to be able to rise and fall, and one end of each is fixed to the weight at intervals in the horizontal direction and passes through a guide 5 provided at the other end. is fixed to the tip of the boom i and has two guide ropes whose length is longer than the ground height of the tip of the boom, and the guide rope is fixed to a fixing point of the weight at one end. A tensioning device is provided for tensioning the weight in a straight line toward the guide portion of the weight clamping device, and the tensioning device is connected to the guide rope between the weight and the two-weight clamping device so as to be tensionable and removable. and a swinging rope having one end fixed to a holding rod of the roller and a swinging rope fixed to the tip of a support bar whose other end is fixed to the crane base; The length and position of the tip of the support bar do not interfere with the tensioning of the guiding rope in a straight line when the weight is at the drop point and the weight is released by the weight clamping device. When the guide rope is at a predetermined height, it is bent by the front extending device to connect with the weight. A weight for ground consolidation, characterized in that the length of the guide rope between the roller and the weight is determined to be longer than the distance between the position of the roller and the weight at the point of fall. drop device.