JPS6215313Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a lifting device for a pile driver.

In the lifting device of an internal combustion type pile driver, in the conventional device, when lifting the pile driver main body, as shown in Fig. 1, one side of the operating rope A is pulled, and the lifting hardware C connected to the lever B is pulled. Slide and lift the pile driver. When the lifting work is completed, the operating rope D on the opposite side must be pulled in order to return the lifting hardware C to its original position, so two operating ropes on the left and right sides are required.
For this reason, during pile driving work, the two operating ropes sometimes became tangled, hindering the lifting operation. In addition, since the operating ropes are located on the left and right sides of the piling tower,
Workers have to move when operating ropes, but it is difficult to do so when it is raining, groundwater is flowing out, or on soft ground due to poor footing. In addition, since there are two operating ropes, it can be difficult to know which rope to pull on the lifting equipment located at a high place when constructing a long pile.If you pull the rope on the opposite side, it could lead to a serious accident. become. Additionally, a separate worker was required to operate the rope.

Therefore, the purpose of the present invention is to eliminate the above-mentioned drawbacks, eliminate rope entanglement and operational errors by eliminating the operating rope, and provide a lifting device for a pile driver that eliminates the need for a worker to operate the rope. This is what I did.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a side view showing the relationship between the pile driver and the lifting device, FIG. 3 is a front view showing the first embodiment of the present invention, FIG. 5 is a sectional view thereof, FIG. 6 is a sectional view showing its operating state, FIG. 7 is a front view showing a second embodiment of the present invention, and FIG. 8 is a sectional view in FIG.
FIG. 9 is a view taken in the direction of the arrow in FIG.

In the drawing, a lifting device main body 1 moves up and down along a guide pipe 16 provided on a piling tower 25, and has a protrusion of a stopper 1a.

The ram lifting hook 2 has a pin 3 attached to the lifting device main body 1.
are rotatably supported and fitted.

The cam lever 8 is rotatably supported and fitted into the lifting device main body 1, the cam 7 and the cam lever 8 are fixed, and the leaf spring 9 presses the cam 7 into contact. The link 5 connects the ram lifting hook 2 and the cam 7.
They are connected via pins 4 and 6. The stopper 18 is fixed to the lifting device main body 1 and is supported by a spring 14.
is supported by a spring hook 19 and a link 17. The elongated hole link 11 connects the ram lifting hook 2 and the link 17 via pins 10 and 13.

The pin 12 rotatably fits into the lifting device main body 1 and fixes the lifting hardware 15 and the link 17, and the lifting hardware 15 is rotatably supported by the lifting device main body 1 and has a spring. 4th to tilt by 14
As shown in the figure, it is energized.

A lower tripping piece 21 is attached to the lower part of the upper cylinder 20, an upper tripping piece 22 is attached to the upper part of the main body lifting bracket 23 in the middle part, and the ram 24 is slidably fitted into the cylinder. are doing. Further, the leaf spring 9 presses the cam 7 toward the cylinder side.

When lifting the ram, when the lifting device main body 1 is lowered using the guide pipe 16 as a guide, the cam lever 8
hits the lower tripping piece 21 and rotates counterclockwise. At the same time, cam 7 also rotates,
By pushing the link 5, the ram lifting hook 2 rotates counterclockwise about the pin 3. When the cam 7 is in contact with the stopper 18, the pins 4 and 6 are
Since the center position of the cam lever 8 is offset from the line connecting the center lines of the cam 7, the cam 7 is supported by the stopper 18 and held by the leaf spring 9. Since one end of the elongated hole link 11 is connected to the ram lifting hook 2, the pin 1 is moved by rotation of the ram lifting hook 2.
3 is pressed, the link 17 rotates around the pin 12, and the hanging hardware 15 stands upright. When the lifting device main body 1 is lifted in this state, the ram lifting hook 2 hooks the stepped portion of the ram 24, and the ram 24 is pulled up. Continuing to rise, when the cam lever 8 hits the upper tripping piece 22, the cam lever 8 rotates, the ram lifting hook 2 comes off the stepped portion of the ram 24, the ram 24 falls, and the hammer operates. Spring 1
Since the pin 4 is pulling the link 17, the pin 12 rotates, and the hanging hardware 15 becomes horizontal and stops when it hits the stopper 1a. The ram lifting hook 2 is held by the leaf spring 9 pressing the cam 7 at the location where it hits the stopper 18.

When lifting the pile driver main body, when the lifting device main body 1 is lowered, the lifting hardware 15 becomes horizontal, so
While sliding down the back of the main body lifting bracket 23, it returns to the original horizontal position after passing the stepped part. When the lifting device main body 1 is lifted in this state, the lifting hardware 15 hangs on the stepped part of the main body lifting bracket 23, and since the lifting hardware 15 is supported by the stopper 1a, the lifting device main body 1 is lifted. is lifted up.

The lifting device main body 1 is lowered, and the lifting hardware 15 is
If it is lifted immediately after passing the main body lifting bracket 23, the pile driving machine main body can be lifted, and if the lifting device main body 1 is lowered to the lower tripping piece 21 and then lifted, the ram 24 can be lifted. . In this way, by lowering the lifting device main body 1 and changing the three positions, lifting the main body and lifting the ram can be performed, thereby eliminating the need for an operating rope, eliminating rope entanglement and operational errors. Since rope operation is no longer necessary, the manpower required for this purpose is no longer necessary. When the pile driver is started, the lifting hardware must be in an open state, and while conventional devices required rope operation to open, the present invention allows this to be done automatically using a link mechanism.

A second embodiment of the present invention will be described with reference to FIGS. 7 to 9.

The pin 3a is connected to the ram lifting hook 2 and the link 1.
7a, and is rotatably supported and fitted to the lifting device main body 1. The cam lever 8 is rotatably supported and fitted into the lifting device main body 1.
and cam 7 are fixed. The link 5 connects the ram lifting hook 2 and the cam 7 via pins 4 and 6. The stopper 18 is fixed to the lifting device main body 1, and the spring 14 is supported by a spring hook 19 and a lifting hardware 15. Lifting device body 1
has a protruding portion of the stopper 1a. Further, the leaf spring 9 presses the cam 7 toward the cylinder side, and the lifting hardware 15 is rotatably fitted to the pin 3a and supported by the lifting device main body 1.

As in the first embodiment, when lifting the ram, the cam lever 8 rotates to set the ram lifting hook 2 to the ram lifting state, and at the same time the link 17a fixed to the pin 3a is connected to the lifting hardware. This is possible by pushing up 15. When lifting the main body of the pile driver, as in the first embodiment, the lifting hardware tensioned by the spring 14 slides down the main body lifting bracket 23 and lifts the main body of the pile driver at a place past the stepped part. By lifting 1, the main body can be lifted.

In this way, the effects of the second embodiment are similar to those of the first embodiment.

In short, according to the present invention, the pile driving machine can be moved up and down along the guide pipe provided in the pile driving tower, and the ram that is slidably fitted inside the pile driving machine can be lifted up during startup. In the lifting device of a striking machine, the lifting hardware is rotatably supported by the lifting device body and biased to tilt by a spring, and the ram lifting hook is rotatably supported by the lifting device body. When the lifting device is lowered when the hammer is started, the cam lever hits the lower tripping piece, and the link mechanism causes the ram lifting hook to act on the ram and simultaneously interlock with the ram lifting hook. The main body lifting hardware is opened and the ram can be lifted.

As the ram is lifted, the cam lever hits the upper tripping piece, the ram lifting hook is released from the ram by the link mechanism, the ram falls, and the hammer begins to operate.

In addition, when the hammer body is lifted and the lifting device is lowered, the lifting hardware is constantly tensioned by the spring, so as it slides on the back of the main body lifting bracket, it eventually becomes horizontal and the lifting device body is lowered. Supported by a stopper.

If the lifting device is raised in this state, the hammer body will be lifted. In this way, by linking the lifting hardware to the ram lifting hook, the operating rope is omitted, eliminating rope entanglement and operational errors.
Eliminates the need for workers to operate the rope.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the lifting device of a conventional pile driver, Fig. 2 is a side view showing the relationship between the pile driver and the lifting device, and Fig. 3 is a first embodiment of the present invention. A front view shown, FIG. 4 is a sectional view in FIG.
5 is a sectional view thereof, FIG. 6 is a sectional view showing its operating state, FIG. 7 is a front view showing a second embodiment of the present invention, FIG. 8 is a sectional view of FIG. FIG. 9 is a view taken in the direction of the arrow in FIG. 1... Lifting device main body, 1a... Stopper (protrusion), 2... Ram lifting hook, 3, 3a, 4,
6, 10, 12, 13...pin, 5, 17, 17
a...link, 7...cam, 8...cam lever,
9...Plate spring, 11...Elongated hole link, 14...Spring, 15...Hoisting hardware, 16...Guide pipe, 18...Stopper, 19...Spring hook,
20... Upper cylinder, 21... Lower tripping piece, 22... Upper tripping piece, 2
3... Body lifting bracket, 24... Ram, 25
……scaffold.

Claims (1)

[Scope of utility model registration request] In a lifting device for a pile driver that raises and lowers the pile driver body along a guide pipe provided in a pile driver tower, or lifts a ram that is slidably fitted inside the pile driver body at the time of startup, A lifting hardware that is rotatably supported by a lifting device main body and that is locked to a stepped portion of the pile driver main body to lift the pile driver main body, and a lifting hardware that is attached to a stopper of the lifting device main body. a spring that biases the lifting device; a ram lifting hook that is rotatably supported by the lifting device main body and that is coupled to and released from the stepped portion of the ram in conjunction with a cam; and the cam and the ram lifting hook. A lifting device for a pile driver, comprising a link connecting a hook and a lifting hardware.