JPS5886291A - Automatic earth-moving device for earth drill bucket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earth removal device for dropping excavated soil in a packet by opening the bottom cover of the packet connected to the lower end of the Kelly bar in an earth drill.

First, the prior art will be explained with reference to FIGS. 1 and 2.

Fig. 1 shows an example of an earth drill, in which a main body 1 is rotatably installed on a running roller 7, a front frame 2 and a boom 3 are attached to the front part of the main body 1, and a front frame 2 and a boom 3 are attached to the front part of the main body 1. A drive device 5 of the Kellyver 4 is attached to the tip, and a packet 6 is attached to the lower end of the Kellyver 4.
is installed. A sheave 9 serving as a fulcrum for a hanging rope 8 for suspending the Kelly bar 4 is housed at the tip of the boom 3, and the hanging rope 8 and the Kelly bar 4 are connected by a swivel joint 10.

Kerryba 4 is generally a 3- to 4-stage telescopic type for deep excavation.

As shown in FIG. 2, the packet 6 includes a cylindrical packet body 30 with an open bottom and a pin 16 provided at the center of the top surface of the packet body 30.
The mounting bracket 15 and the packet body 3 are connected by
o has a conical bottom lid 31 attached to the lower surface of the hole so as to be openable and closable with a hinge 17; a claw 13 for drilling the bottom of the hole is attached to the bottom cover 31; An intake port 14 is provided for taking in the information into the packet. 28 is a fixture 3 fixed to the upper plate and inner wall of the packet body 3o.
2 is a bottom cover locking rod rotatably attached,
A small plate-shaped locking tool 11 that engages with a rectangular locking hole 18 provided in the bottom cover is fixed to the lower end of the rod. When the locking tool 11 is aligned with the direction of the locking hole 18, the locking tool 11 is removed from the edge of the locking hole 18, and the bottom cover 31 rotates around the hinge 17.
The bottom cover will be opened. Reference numeral 12 designates an earth removal handle 28 in a direction to maintain the bottom cover locked state when the locking tool 11 is in the bottom cover locked state.
It is a tension spring that pulls a.

In this packet 6, the excavated material taken into the packet 6 by rotary excavation is removed by a worker turning the earth removal handle 28a by hand each time the excavated material is removed by rotating the locking tool 11.
was removed from the locking hole 18 and the bottom cover 31 was opened. For this reason, another worker was required in addition to the earth drill operator, and the work efficiency was also low. Furthermore, since the soil removal worker had to operate the handle 28a near the bucket 6, the working conditions and location were poor, and there was a danger of getting hit by the excavated material.

The purpose of the present invention is to enable the bottom cover of the packet to be opened by operation from the driver's seat, thereby achieving work efficiency and safety, and to freely select the soil removal height according to the conditions of the soil removal site. To provide an automatic soil evacuation device for an earth drill packet which can prevent excavated materials from scattering.

A feature of the present invention is that a plurality of support rods and fixing means for fixing the support rods at arbitrary positions in the vertical direction are attached to the kely bar drive device mounting portion of the front frame, and a fixing means for fixing the support rods at arbitrary positions in the vertical direction is attached, and and a sick ring connected and attached to the support rod, and configured to rotate the rod and open the bottom cover by raising the packet and bringing a link mechanism attached to the top surface of the packet into contact with the sick ring. It's what I did.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. 19 is the Kerryba transportation device 5 of the front frame 2
A plurality of support rods (two on the left and right in the illustrated example) are housed in the mounting section via brackets 46, 46 and guide tubes 41;
Reference numeral 21 denotes a sick ring connected to the support rod 19 by a pin 20, and the shifter ring 21 is attached so as to surround the Kelly bar 4 with a gap 47 in between. The support rod 45 is provided with a plurality of bottle holes 45 spaced apart from each other in the vertical direction, and the support rod 19 is vertically movable in the guide tube 41 fixed by the upper and lower brackets 46 and 46. The guide tube 41 is also provided with a pin hole 48, and the support rod 19 can be inserted into any pin hole 45 at a desired height.
By aligning the position of the pin hole 48 of the guide tube 41 and inserting the pin 49, the support rod 19, that is, the shifter 9 ring 21
can be held at any desired height. Reference numeral 49 denotes an extraction stopper attached to the upper end of the support rod with a bolt 50.

Reference numeral 33 denotes a link mechanism attached to the upper surface of the packet 6, and the link mechanism includes a lever 26 with one bite fixed to the upper end of the rod 27, and a link 2L-shaped with one end connected to the tip of the lever 26 by a pin z4. It consists of an earth ejecting lever 22 and a bracket 36 that supports the middle part of the earth ejecting lever 22 so as to be able to rotate up to the bin 23. 27
1, in which a pull spring 24 is provided that applies a force to prevent the iIJ locking tool 11 from coming off the locking hole 18;
In this embodiment, at a position opposite to the attachment part position of the link mechanism 33 with respect to the center of the upper surface of the packet 6,
A dummy link mechanism 43 consisting of a bracket 37, a pin 38. It becomes.

Next, the operation of this device will be explained. Said packet 6
During excavation work, the locking tool 11 is in a state of being engaged with the locking hole 18, that is, in a closed state. After the packet 6 is filled with excavated material, it is hoisted up and lifted to the ground, and the main body 1 is rotated so that the packet 6 comes to the soil discharge position to discharge the soil. When performing this soil removal, an arbitrary discharge height is set depending on the conditions of the soil removal site. For this setting,
Select the bottle hole 45 provided in the support rod 19 according to the arbitrary earth removal height, pass the bottle 42 through the pin hole 45 and the pin hole 48 in the guide direction 41, and then Perform positioning. With this setting, the sickling 21 is fixed, so the packet 6 as shown in FIGS.
When the packet 6 is pulled up from the lowered state, as shown in FIG.
Due to the rotation against the force of
is rotated and removed from the locking hole 18, so the bottom cover 31 opens around the hinge 17, and the excavated material inside is dropped (ejected) downward.

In this embodiment, a dummy link mechanism 43 is provided, and when the earth removal lever 2j2 presses against the shifter ring 21 and rotates, the lever 39 also rotates against the force of the tension spring 40. Therefore, the left and right forces applied to the sick ring 21 are balanced, and the sick ring 21 is maintained horizontally.

As shown in the figure, the locking tool 11 has a tapered shape such that the lower end thereof is narrower than the width of the locking hole 18. When the packet 6 is lowered to the ground and pressed, the locking tool 11 is pushed into the locking hole 18 and rotated against the force of the spring 24, resulting in a locked state. This allows you to start the next repetitive task.

In this embodiment, a plurality of bottle holes and bottles are used as means for fixing the support rod 19 at an arbitrary height, but various other methods may be used. The specific structures and mutual relationships of the support rod, shifter ring, and link mechanism are not limited to those in the embodiments.

As described above, the automatic earth drill packet unloading device of the present invention is equipped with a support rod, a sick ring, and a link mechanism, and when the packet is pulled up and the link mechanism is brought into pressure contact with the sick ring, the earth drill packet can be removed. Since the lid is opened and the soil is discharged, the soil can be discharged by the operator in the operator's room, which saves labor, improves work efficiency, and eliminates the need for workers to use poor scaffolding. Since there is no need to carry out work on the ground, and there is no need to worry about being hit by excavated materials, work safety is improved. Furthermore, since the present invention is equipped with a means for fixing the support rod at an arbitrary height, the height of soil removal can be freely selected according to the conditions of the soil removal site, and the excavated material can be prevented from scattering. do not have.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of an earth drill to which the present invention is applied; A bottom view, FIG. 3 is a side view showing one embodiment of the earth removal device of the present invention, FIG. 4 is a front view thereof, and FIG. 5 is a side view showing its operating state. 1... Earth drill Main body, 2 instep front frame, 4
... Kellyba, 5... Kellyba drive device, 6...
Packet, 11... Locking tool, 19... Support rod, 27
... Rod, 33 ... Linkage mechanism patent applicant Hitachi Construction Machinery Co., Ltd. Agent Patent attorney Tadashi Akimoto Real agent Patent attorney Waka 1) Masaru − −11= (B) 1 0 Figure 3 49 45゛19 6 42 i-go --4841 [
2I 6 0 33:: “21 ＼ 154゜22 4323
3825
・ 396 Sun Procedural Amendment (Voluntary) 1981 5ri! 2nd Japan Patent Office Commissioner 1, Indication of the case 1984 Patent Application No. 184412 2 Title of the invention Automatic soil removal device for earth drill packet 3, relationship with the person making the amendment Case Patent applicant address Chiyoda-ku, Tokyo Uchikanda-chome 2 IO Name (552) Hitachi Construction Machinery Co., Ltd. Representative Bunpei Nishimoto 4, Agent

Claims (1)

[Scope of Claims] 1. A front frame supported by an earth drill body, a Kelly bar drive device supported by the front frame, and a Kelly bar that is vertically slidably inserted into the Kelly bar drive device and rotated. a packet that is attached to the kelly bar and takes in dirt by rotation; and a bottom lid that is attached to the bottom opening of the packet so that it can be opened and closed by a hinge, and that has an excavation blade and a notch for introducing dirt. a rod that is attached to the packet and has a locking tool at the lower end that detachably locks the bottom cover, and when the rod rotates, the locking tool and the bottom cover are disengaged, and the bottom cover is released. In an earth drill whose lid is configured to open by its own weight, a plurality of support rods are attached to the Kellyver drive device mounting portion of the front frame, and a fixing means for fixing the support rods at arbitrary positions in the vertical direction; The support rod and a fixing means for the support rod (a shifter ring that is fixed at any position in the vertical direction) are attached to surround the Kelly bar, and are attached to the top surface of the packet in connection with the rod; and a link mechanism that rotates the rod in the direction of removing the bottom cover by contact with the sick ring, and a tension spring installed between the link mechanism and the packet. 2. At a position opposite to the link mechanism mounting position g13 with respect to the packet center on the top surface of the SiJ packet, there is a sick ring tilt prevention mechanism consisting of a dummy link mechanism not connected to the rod and a tension spring. An automatic soil unloading device for an earth drill packet according to claim 1, comprising: