JPS5886286A - Automatic soil discharging apparatus of 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 provides an earth removal device in a packet of an earth drill;
More specifically, the present invention relates to a device for discharging earth and sand from a packet by opening a bottom cover that is retractably connected to the opening of the packet.

Generally, as shown in FIGS. 1 to 3, an earth drill has a front frame 2 supported in front of a main body 1 of the earth drill (excavator), and a Kelly bar drive device supported on the front frame 2. The Kelly bar 4 is inserted into the drive device 6 so as to be rotatable and slidable in the vertical direction, the packet 5 is attached to the lower end of the Kelly bar 4 with the pin 22, and the bottom cover 6 is hinged to the bottom opening of the packet 5. 26 so that it can be opened and closed freely, and a handle 8 is attached to the packet 5.
is rotatably attached, and the latch 9 connected to the locking handle 8 is removably locked in the locking hole 24 of the bottom cover 6,
The bottom cover 6 is provided with a digging blade (not shown) and a notch (not shown) for taking in the excavated earth and sand. This earth drill has a Kerryba drive device 6.
is driven to rotate the Kerry bar 4 and the packet 5, and the ground is excavated by the excavation blade at the bottom point 6 of the rotating packet 5, and the excavated earth and sand is accommodated in the packet 5 from the notch, and the packet is removed. 5 is filled with earth and sand, the rotation of the Kelly bar 42 and the packet 5 is stopped, the Kelly bar 4 and the packet 5 are raised and placed on top of the dump calf, etc., and the handle 8 is rotated.
The latte 9 at the lower end of the earth drill is released from the locking hole 24, the bottom blood 6 is automatically twisted open, and the earth and sand in the packet 5 is discharged into a dump calf or the like. The means for opening the packet 6 and discharging the earth and sand in the packet 5 is as follows:
This is a so-called manual type in which an operator holds the handle 8 while holding the dump calf and rotates it, or hooks a hook on the handle 8 and rotates it to remove soil. For this,
A worker other than the operator of the earth drill is required to remove soil, and there is a risk of injury to the worker due to the scattering of soil and unstable footing during this operation. Therefore, there is a drawback that the work of removing earth and sand is slow and inefficient.In order to eliminate this drawback, the Utility Model Publication Act of 1973 was developed to make this work more visible. There is one disclosed in Publication No. 3430. This is made by suspending a wire (a locking piece J4!2+1 with a locking piece for rotating the handle) suspended from a gear support that rotates the Kerryba. This is to enable flexible response without restricting the position of the locking piece attachment body so that it can be opened in the cylindrical shape.However, according to this known configuration, the following There are problems such as 0, i.e., the reaction force generated when rotating the locking piece on the front handle. Because the handle is fixed with considerable rigidity by a spring or the like, it is impossible for the handle to be rotated (reaction force is generated against the force that attempts to rotate the handle). Therefore, after the locking piece hits the handle,
The locking piece attachment body rotates as a unit as the packet rotates, and the wire gradually wraps around the Nikkelypa.
Only when there is any slack in the wire can you take the reaction force necessary to rotate the handle and open the bottom cover. Efficient 0 In addition, the height of the packet when the bottom lid is fully opened is different (secondarily, the direction in which the bottom lid opens is not constant, and the opening direction of the bottom lid cannot be set arbitrarily. If the wire is shortened to reduce the rotation of the packet, the original purpose of opening the bottom lid of the packet with arbitrary ease will be missed.In addition, in the above operation, the locking piece After hitting the handle, the locking piece mounting body rotates and the wire wraps around the Kelly bar, so the locking piece mounting body is also pulled up by this movement, so the packet is pulled up as well. The present invention was made in view of the above drawbacks, and it is possible to perform soil removal on the ground with any ease by remote control. , and by opening the bottom cover of the packet in the specified direction, it is also possible to avoid the vibrations, vibrations, and frictional resistance of the Kelly bar when it slides up and down during excavation (-). It is an object of the present invention to provide a mechanical earth removal device for an earth drill packet that has a structure that is not affected by the impact and also has a structure that is easy to absorb the reaction force when the bottom cover of the packet is fully opened. In order to achieve this object, the automatic earth drill packet unloading device of the present invention includes a support rod that is vertically slidably attached to a guide provided on a front frame, and a lower part of the support rod (= A handle rotation contact body is attached to the provided bracket so that its position can be adjusted according to the position of the handle that changes depending on the size of the packet, and a handle rotation contact body is attached to the Kelly bar and allows the packet with the mark M to be pulled up and down. a push-up member that contacts the bracket and pushes it upward when the support rod is excavated; It is characterized by being configured to be in a non-contact state.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 7. FIG. 4 shows the packet 5 in a lowered state, and FIGS. 5 to 7 show the packet 5 in a raised state. 2 is a front frame supported by the earth drill main body; 3 is a Kerry bar drive device supported by the front frame; 4 is a front frame supported by the earth drill body;
A packet 5 is inserted into the Kelly bar driving device 3 so as to be slidable up and down and rotated, and the bottom cover 6 is attached to the lower end of the Kelly bar so as to be openable by a hinge.
is attached by a bin 22.

However, the automatic earth removal device of the present invention has a front frame 2
multiple 1 [i! If a guide tool 10 is provided (in this embodiment, the guide tool is a cylindrical body provided on the left and right sides of the front frame 2 with a vertical interval of 211i!!), and the guide tool A support rod 11 is attached so as to be slidable in the vertical direction. 12 is a bolt 13 attached to the top of the support rod 11
Reference numeral 11a, which is a stopper for preventing removal, is a bracket for attaching a contact member provided at the lower part of each support holder 11, and reference numeral 14 is a contact member for rotating the handle, which is attached to the bracket. The bracket 11a is provided almost inwardly and outwardly, and has several bolt insertion holes 2 on both sides.
5 has a flange portion 26 drilled therein, and a bolt insertion hole (not shown) provided in the flange portion 27 on the upper part of the contact body 14.
Align the bolt 2 with one of the bolt insertion holes 25.
8 and a nut 29, the contact body 14 can be attached at a suitable position depending on the position of the handle 8, which changes depending on the size of the packet 5. Further, the contact portion 14a of the contact body 14 with the handle 8 is formed in a radial direction (two inclined surfaces).

These support rods 11, brackets) lla and contact bodies 1
The structure consisting of 4 is independent for each support rod, and each structure is configured to be in a non-contact state with the Kelly bar 4 during excavation.

Reference numeral 17 denotes a push-up member detachably attached to the lower part of the Kelly bar 4, and when the Kelly bar 4 and the packet 5 are wound up (the push-up member pushes up the bracket 11a and the support rod 11, thereby lifting the handle). 8 and contact body 14
The relationship between the two members is to ensure that the cylinder length is constant.0 The push-up material is made of two members whose upper parts are approximately semi-disc-shaped, which hold the Kelly bar 4 together and are fastened and fixed with bolts. 015 is a roller that smooths the movement when the push-up member 17 rotates while pushing up the bracket 11a'Y, and is a mounting roller fixed to the lower surface of the inner end of the bracket 11a It is attached by a bracket 16.

Next, the operation of this embodiment will be explained. As shown in FIG. 4, when the packet 5 is lowered, the stopper 12 at the top of the support rod 11 is in contact with the upper part of the upper guide 10, and is attached to the Kelly bar 4. The push-up member 17 and the bracket 11a are in a non-contact state, so the handle 8 attached to the packet 5 and the contact body 14 attached to the bracket 11a do not come into contact with each other. In addition, if excavation is performed in this state, the edge 1 (4) may be deflected or photographed, but since there is a light gear between the edge 4 and the bracket 11a,
Brakeno)lla is not affected by Kerryba 4 due to Bizen, and is kept in a non-contact state even when Kerryba 4 is raised or lowered.

When opening the bottom cover 6 of the packet, be sure to
As shown in the figure, pull the packet 5 upward. As a result, the push-up member 17 comes into contact with the roller 15, and the gripper body 14 and the handle 8 can come into contact with each other.Here, the lever 4 is moved toward the elbow by the lever drive device 3 as shown in FIG. When rotated, the packet 5 also rotates, so the handle 8 contacts the contact surface 14a of the contact body 14 and rotates, and the bottom cover 6 is opened. When discharging soil by opening the bottom cover, even if the discharging surface changes variously depending on the conditions at the construction site, the push-up member 17 and the roller 5 remain in contact and follow the vertical movement of the Kelly bar 4. support rod 11
That is, since the contact body 14 also moves up and down, the bottom cover 6 can be moved at any position.
can be opened. In order to prevent the bottom cover 6 from opening suddenly during excavation, the handle 8 is usually fixed with a fairly stiff spring or the like.
The handle 8 must be rotated with a force that overcomes this force, but this force is much smaller than the digging force, so there is no problem. Also, in order to stop this reaction force, the support rod 11 has a light intensity, and the interval 2 between the upper and lower guide tools 10 supporting the support rod 11 is increased. Also,
In order to ensure that the radial positions of the handle 8 and the contact body 14 match, the distance between the support rod 11 and the guide tool 1o is made small, and the guide tool 1o is divided into upper and lower halves as described above. The distance between them is large.

In addition, in this embodiment, an example is shown in which two support rods 11 are used, and in this case, to open the bottom cover 6, the bucket Y must be depressed by a maximum of about 180 degrees, but in order to reduce this angle of movement, Brakeso without increasing the number of supports #11 or increasing the number of support rods 11)
This problem can be solved by increasing lla in a branched manner. If only one fixed support rod is used, the rotation angle of the packet becomes large, but this does not deviate from the aim of the present invention.

In addition, when closing the bottom cover 6 of the packet 5, as in the conventional case, lower the Kelly bar 4 by continuous operation in the driver's cab, press the bottom cover 6 against the ground, and insert the Laso Y-9 into the locking hole 2.
4 by press-fitting against the spring force.

I've said it above.・According to the present invention, the bottom cover of the packet can be opened and closed from the driver's seat of the earth drill body, so there is no need for a worker to open the bottom cover. In addition, the time required for excavating soil is shortened.

In addition, since the bottom cover can be opened at any height, it is possible to minimize the falling height of the soil when using dump trucks with different soil discharge heights, or when discharging soil on top of piles of soil due to discharge. This prevents the scattering of earth and sand.In addition, during excavation, the structure is such that the Kerry bar and bracket do not come into contact with each other, so there is no deflection or vibration that occurs in the Kerry bar, and there is no friction caused when the Kari bar slides up and down. Since it is not subjected to any load such as resistance force, only the turning force of the handle needs to be considered in terms of strength, and the structure can be simplified.

Furthermore, since the structure consisting of the support rod, bracket, and contact body is independent for each support rod, assembly is easier than when the support rods are connected using brackets.

In addition, since the contact body is supported by the support rod, the rotational reaction force of the handle when opening the bottom cover is reliably absorbed, allowing the bottom cover to be fully opened efficiently regardless of the height of the packet. Since the soil can be discharged reliably and the circumferential position of the contact body is fixed, the bottom cover can be opened in a certain direction. It becomes possible.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing a conventional earth drill in a state of soil removal, the second section is a plan view of the packet, and FIG. 3 is a sectional view taken along line AA in FIG. 2. Figures 4 to 71 show one embodiment of the earth removal device of the present invention, where the fourth figure is a front view showing the packet in a lowered state, and the fifth figure is a front view showing the packet in a raised state. 61 yen 1 is the center of the BB cross section in Figure 5,
FIG. 7 shows the side opening of FIG. 5. DESCRIPTION OF SYMBOLS 1... Earth drill body, 2... Front frame, 3... Kellyba drive device, 4... Kellyba, 5
...Packet, 6...Bottom lid, 8...Handle, 9
... Latch, 10... Guide tool, 11... Support rod,
lla...bracket, 14...contact body, 17...
・Push-up member No. 1 Figure 2 "-p-4 7th C procedural amendment (voluntary) May 11, 1980 Patent Office Director General 1, Indication of the case 1984 Patent Application No. 184406 2, Title of the invention: Earth Drill Packet Automatic Earth Discharging Device 3, Relationship to the Amendment Case Patent Applicant Address: 2-10 Uchikanda-chome, Chiyoda-ku, Tokyo Name (552) Hitachi Construction Machinery Co., Ltd. Representative Nishimoto Bunpei 4, Agent 6, Subject of amendment Detailed explanation of the invention in the specification column 7,
Contents of the amendment In the specification, “excavation” on page 10, line 13 has been changed to “
"Drilling", corrected. Procedural amendment (spontaneous) July 7, 1980 Director General of the Patent Office, Incident indication 1984 Patent application No. 184406 2 Title of invention Automatic soil removal device for earth drill packet 3 Person making the amendment Relationship to the case Patent applicant address 2-10 Uchikanda-chome, Chiyoda-ku, Tokyo Name (552) Hitachi Construction Machinery Co., Ltd. Representative Bunpei Nishimoto 4 Agent 6 Subject of amendment Amendment of the scope of claims in the specification Column and Detailed Description of the Invention Column 7, Contents of Amendment The following amendments will be made to the description as shown in the attached sheet. (1) Amend the scope of claims as per the attached sheet0(2)
On page 7, line 5, "the above-mentioned Kellyba" is corrected to "rotating part". (3) In page 12, line 12, after "O does not deviate", add "Also, the push-up member 17 may be attached to the packet 5." )E Claim 1: A front frame supported by the earth drill body, a Kelly bar drive device supported by the front frame, and a Kelly bar drive device that is vertically slidably inserted and rotated. a kelly bar; a packet attached to the kelly bar to take dirt into it by rotation; a bottom lid attached to the bottom opening of the packet so as to be openable and closable by a hinge, and having an excavation blade and a notch for introducing dirt; A latch is attached to the packet and detachably latches to the bottom cover, and a latch is provided at the top of the packet connected to the latch, and when rotated, the bottom cover is released from the bottom cover by the latch. In this earth drill, a support rod is attached to a guide provided on the front frame so as to be slidable in the vertical direction, and a packet is attached to a bracket provided at the bottom of the support rod. A handle rotation contact body is attached to the rotating part so that its position can be adjusted according to the position of the handle which changes depending on the size of the handle, and the handle rotation contact body is attached to the rotating part, and when the packet is pulled upward, the contact body is attached to the bracket mentioned above (1). a push-up member that contacts and pushes upward, the structure consisting of the support rod, the bracket, and the contact body is independent for each support rod, and the structure is in a non-contact state with the Kelly bar during excavation. An automatic soil unloading device for an earth drill packet, characterized in that it is configured as follows.

Claims (1)

[Claims] 1. A front frame supported by the earth drill body, a Kellyver drive vJ device supported by the front frame, a Kellyver that is vertically slidably inserted into and rotated by the Kellyver drive device, and a Kellyver that is rotated by being vertically slidably inserted into the Kellyver drive device. A packet that is stored and rotates to take in earth and sand, a bottom lid that is attached to the bottom opening of the packet so as to be openable and closable by a hinge and has an excavation blade 8 and a notch for introducing earth and sand, and a bottom cover that is attached to the packet. a latch that detachably locks the bottom lid, and a latch that is connected to the latch on the top of the packet;
and a handle that can be rotated to release the bottom cover from the latch and open by the weight of the bottom cover, and is attached to the guide provided on the front frame so as to be slidable in the vertical direction. a handle rotation contact body attached to a bracket provided at the bottom of the support rod so that its position can be adjusted according to the position of the handle that changes depending on the size of the packet; , a push-up member that contacts the bracket and pushes the packet upward when the packet is pulled upward;
An earth drill packet characterized in that the structure consisting of the support rod, the bracket 8 and the contact body is independent for each support rod, and the pseudo-adult is in a non-contact state with the kelly bar during excavation. Automatic earth removal device.