JPS6129805Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a crawler-mounted pile driver in which the upper leader can be raised and lowered relative to the lower leader.

Next, a known crawler-mounted pile driver of this type will be explained with reference to FIGS. 5 to 7.

A revolving body 1 is rotatably mounted on a crawler type traveling body 21, and a leader support base 2 is attached to the front part of the revolving body 1. A lower leader 3 is attached to the front end of the leader support stand 2 via a support pin 22 so as to be tiltable in the front, rear, left and right directions. An upper leader 4 having a split structure is provided above the lower leader 3, and its lower end is connected to the lower leader 3 via a fulcrum pin 23.

In a working state (not shown), the leader support base 2 includes a base end of a undulating cylinder 5 for undulating the upper leader 4, and a support column connected to the lower side of the left and right pillars 14 that support the upper leader 4. cylinder 15
A receiving metal fitting 16 is supported. Receiving metal fitting 1
6 is attached to the tip of the piston rod 20 of the column cylinder 15. The figure shows the upper leader 4 in a folded state, and the receiving metal fitting 16 is separated from the leader support base 2. The upper end of the support column 14 is connected to the upper part of the upper leader 4 via a mounting shaft 19.

A top sheave block 8 is removably attached to the top of the upper leader 4 of the crawler-mounted pile driver shown in FIG.
Upper leader 4 of the crawler-mounted pile driver shown in the figure
A top sheave block 8 is swingably supported via a support pin 9 on the top of the block. The top sheave block 8 shown in FIG. 7 is also fixed to the top of the upper leader 4 by a fixing pin in the working state.

A support base 6 for receiving the upper leader 4 and a support base 7 for receiving the column cylinder 15 are fixed on the revolving body 1 when the upper leader 4 is folded.

Figure 5 shows the crawler-mounted pile driver mounted on the trailer T with the upper leader 4 folded and the top sheave block 8 still attached, and Figure 6 shows the top sheave block 8 removed from the upper leader 4. The figure shows the crawler-mounted pile driver mounted on Truler T. FIG. 7 shows a state in which the top sheave block 8 of the crawler-mounted pile driver mounted on a trailer T is swung downwards using a fulcrum pin 9 as a fulcrum.

The top sheave block 8 in the above-mentioned crawler-mounted pile driver becomes larger as the size of foundation work tools (such as a diesel hammer or an earth auger) increases. When transporting the pile driver, place it on the trailer T with the large top sheave block 8 attached.
If the vehicle is loaded, the height of the entire vehicle may exceed the limit set by the Road Traffic Act. For this reason, the top sheave block 8 must be disassembled each time it is transported, which reduces the excellent maneuverability that is an advantage of the leader folding pile driver. Also,
In order to swing the top sheave block 8 by input, its own weight (500 to 1000 kg) is too large, so a tow truck or a crane is required. If a hydraulic cylinder is installed only for swinging the top sheave block 8, the cost and weight will increase.

The object of this invention is to provide a crawler-mounted pile driver that can easily swing a top sheave block via a column cylinder.

This invention is intended to achieve the above object, and includes a top sheave block supported via a support pin so as to be able to swing at the bottom of the top of the upper leader when it is folded. Fixing pin holes are provided at the top of the upper leader and at the top sheave block on the opposite side of the support pin, and the fixing pins are removably inserted into both pin holes, and the support bracket and top of the support cylinder are connected to each other. The present invention is characterized in that a rope fixing fitting is provided in the middle part of the sheave block, and the end portions of operating wire ropes that are linked to the expansion and contraction of the support cylinder are respectively connected to both rope fixing fittings.

An embodiment of this invention is shown below in Figures 1 to 4.
This will be explained using figures. In these figures, the same reference numerals as in FIGS. 5 to 7 represent the same or equivalent items.

When the upper leader 4 is folded as shown in FIGS. 1, 2, and 4, a support pin 9 is attached to the lower part of the top of the leader 4 so that the top sheave block 8 can swing. supported by the upper leader 4 on the opposite side of the support pin 9;
Fixing pin holes 10 and 12 are provided at the top of the top sheave block 8 and at the top sheave block 8, respectively. By aligning the pin hole 10 with the pin hole 12 and inserting the fixing pin 11 into both pin holes 10 and 12, the top sheave block 8 is attached to the upper leader 4.
is fixed to the top of the

Rope fixing fittings 17 and 13 are attached to the receiving fitting 16 of the support cylinder 15 and the intermediate portion of the top sheave block 8, respectively. The ends of the operating wire rope 18 are formed with ring-shaped parts that fit into the rope fixing fittings 17 and 13, respectively.

When folding the upper leader 4 and swinging the top sheave block 8, the loop-shaped portion of the operating wire rope 18 is fitted into the rope fixing fittings 17, 13. 1 and 2 show a state in which the fixing pin 11 is removed, the support cylinder 15 is shortened, and the top sheave block 8 is swung counterclockwise in the figure by its own weight. The overall height h of the pile driver is smaller than the height H of the pile driver in the state shown in FIG. 4 with the top sheave block 8 fixed to the top of the upper leader 4. Incidentally, the top sheave block 8 swings due to its own weight at a speed commensurate with the shortening speed of the column cylinder 15.

When the support cylinder 15 is extended from the state shown in FIGS. 1 and 2, the top sheave block 8 is swung clockwise about the support pin 9 via the operating wire rope 18, and the pin hole 10 Matches pin hole 12. Both matching pin holes 10,
By inserting the fixing pin 11 into 12, the top sheave block 8 is fixed to the top of the upper leader 4.

When raising the upper leader 4 and connecting it to the lower leader 3, the operating wire rope 18 is removed.

According to this invention explained above, the following effects can be obtained.

(1) Even when installing a top sheave block, which has become larger due to the increase in the size of foundation work tools, the ground height of the entire pile driver can be reduced by easily swinging it. can do.

(2) The large top sheave block can be swung by the support cylinder provided in the pile driver without using a separate crane, tow truck, or special hydraulic cylinder, so the leader folding type The pile driver's advantage of good maneuverability can be fully utilized, and assembly and disassembly costs can be reduced.

(3) Safety is improved because the swinging operation of the top sheave block can be performed remotely.

[Brief explanation of drawings]

Figures 1 and 4 are side views showing one embodiment of this invention, Figure 2 is an enlarged view showing the top of the top sheave block and upper leader in Figure 1, and Figure 3 is the column cylinder in Figure 1. FIGS. 5 to 7 are side views of a known crawler-mounted pile driver. 1... Revolving body, 2... Leader support base, 3... Lower leader, 4... Upper leader, 5... Luffing cylinder, 8... Top sheave block, 9... Support pin, 10... Pin hole , 11...Fixing pin, 1
2...Pin hole, 13...Rope fixing fitting, 14...
... Support column, 15 ... Support cylinder, 16 ... Receiving metal fitting, 17 ... Rope fixing metal fitting, 18 ... Wire rope for operation, 21 ... Crawler type traveling body.

Claims (1)

[Scope of utility model registration request] A leader support stand is provided at the front of the revolving body mounted on the crawler type traveling body, and the lower leader is attached to the front end of the leader support stand so that it can tilt forward, backward, left and right, and the upper leader is connected to the lower leader so that it can be raised and lowered. A crawler-mounted pile in which the base end of the undulating cylinder that undulates the upper leader, and the supporting brackets of the column cylinders connected to the lower parts of the left and right pillars that support the upper leader, are each supported on the leader support base. In a beating machine, a top sheave block is supported via a support pin so as to be able to swing at the bottom of the top of the upper leader in the folded state, and the top of the upper leader on the opposite side of the support pin is supported so that it can swing. A fixing pin hole is provided at a location and a location on the top sheave block, fixing pins are removably inserted into both pin holes, and a rope fixing bracket is provided at an intermediate portion between the support bracket of the support cylinder and the top sheave block. A crawler-mounted pile driver, characterized in that the end portions of operating wire ropes linked to the expansion and contraction of the support cylinder are respectively connected to both rope fixing fittings.