JPH0738069U - Bulldozer automatic suspension device - Google Patents

Abstract

(57) [Summary] [Purpose] A bulldozer automatic lifting device that reduces the number of workers and working time, improves the loading and unloading efficiency of the unloader, and at the same time improves the work safety by using a dedicated lifting device. I will provide a. [Structure] A grab bucket 4 suspended by a wire 4W from a main trolley that is engaged with and slides on a girder of an unloader is held by being held between bucket holding devices 2 and 2.
The pallet 8 loaded with the bulldozer 10 is connected by the connecting member 6. The bulldozer 10 is moved to the hold of the cargo ship together with the grab bucket by the operation of the unloader. [Effect] The slinging work by the wire between the grab bucket and the bulldozer is omitted, the work safety is significantly improved, and the work staff can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bulldozer automatic suspension device, and more particularly to a bulldozer automatic suspension device capable of stably suspending a bulldozer using a grab bucket.

[0002]

[Prior art]

 When unloading iron ore, coal, etc. from a cargo ship, use cargo handling equipment such as an unloader. While there are a large amount of goods in the hold (hereinafter called "hold"), the grab bucket will efficiently carry the goods, but as the remaining quantity decreases, the amount that can be grabbed also decreases The efficiency decreases because the material that could not be captured by the grab bucket remains in the inner corner.

In such a case, the bulldozer is carried into the hold by the unloader and arranges the materials in the hold into a form that is easy for the grab bucket to grasp. Conventionally, the loading and unloading of a bulldozer has been performed by an unloader in which a grab bucket and a bulldozer are connected by a lifting wire.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional bulldozer automatic suspension device, it is unreasonable that two persons are required to carry in and carry out the bulldozer. In addition, since the bulldozer and the grab bucket are connected by slinging work during the above-mentioned transportation work, there is a problem that it is necessary to improve the work content and work safety.

The object of the present invention is to solve the above-mentioned conventional problems, to reduce the work staff and work time, to improve the loading and unloading efficiency of the unloader, and at the same time, to secure the work safety by using a dedicated suspension device. It is to provide a bulldozer automatic suspension device that improves the performance.

[0006]

[Means for Solving the Problems]

 The automatic bulldozer suspension device of the present invention includes a girder held at a high position by a bridge pier, a main trolley movable along the girder, a grab bucket suspended from the main trolley so that the glove bucket can move up and down, and a flat plate shape. The bulldozer loading pallet, a connecting member for connecting the pallet to the glove bucket so as to suspend the pallet, a gantry installed to face the pallet so as to sandwich the pallet, and a gantry provided on the gantry, It comprises an attaching / detaching device for attaching / detaching the connecting member to / from the glove bucket and the pallet.

The bulldozer automatic suspension device according to claim 2 is the bulldozer automatic suspension device according to claim 1, wherein the connecting member has a rod whose upper end is connected to the grab bucket, and a wire rope connected to the lower end of the rod and the pellet. The attachment / detachment device is characterized by having a grab bucket holding device for holding the grab bucket in a stationary state.

According to another aspect of the invention, there is provided a bulldozer automatic suspending device, wherein a girder held at a high position by a bridge pier, a main trolley movable along the girder, and a glove suspended from the main trolley so as to be vertically movable. A bucket, a connecting member for connecting the bulldozer to the grab bucket so as to suspend the glove bucket, a stand installed to face each other so as to sandwich the bulldozer on the quay, and the connecting member provided on the mount for the glove bucket. It is composed of a bulldozer and an attachment / detachment device that is attached to and detached from the bulldozer.

The automatic bulldozer suspension device according to a fourth aspect of the present invention is a girder that is held at a high position by a bridge pier, a main trolley that can move along the girder, and a glove that is hung up and down with respect to the main trolley. A bucket, a bottom plate on which the bulldozer is placed, and a pallet for loading a bulldozer, which has an outer frame portion that is connected to the bottom plate and is erected so as to straddle the bulldozer on the bottom plate, and the pallet as described above. A connecting device for connecting to the grab bucket, a connecting member to be connected, a stand installed to face the pallet so as to sandwich the pallet, and the descending grab bucket provided on the mount to the pallet. And a guide device for guiding to a position directly above the toe.

[0010]

[Action]

 In the bulldozer automatic suspension device according to the first aspect, the grab bucket of the ship unloading unloader provided on the quay and the flat pallet are connected by the connecting member by the attachment / detachment device also provided on the quay. A bulldozer is loaded on the pallet, and the pallet is firmly connected to the glove bucket, so that the bulldozer can be stably carried into the hold.

Further, in the bulldozer automatic suspension device according to claim 2, the attaching / detaching device for attaching / detaching the connecting member to / from the glove bucket and the palette is connected to a bucket holding device for holding the glove bucket in a stationary state. The member is directly grasped, attached to the glove bucket and the pallet, and then removed. Therefore, the connection work, which was conventionally done manually, is mechanized, leading to higher efficiency and improved safety.

Further, the connecting member is composed of a rigid rod portion and a wire rope, and the wire rope absorbs shocks during lifting and hanging.

In the bulldozer automatic suspension device according to the third aspect, since the grab bucket and the bulldozer are directly connected by the connecting member, it is possible to reduce the number of constituent parts and the transport weight.

In the automatic bulldozer suspension device according to claim 4, the grab bucket of the ship unloading unloader provided on the quay is guided to a position directly above the pallet by the guide member of the gantry provided on the quay. . Further, since the outer frame portion of the pallet is provided with the engaging portion with the glove bucket, the bulldozer can be transported without using a connecting member.

[0015]

Embodiments Hereinafter, first to third embodiments of the bulldozer automatic suspension device of the present invention will be described with reference to the drawings. 1 to 11 show a bulldozer automatic suspension device according to the first embodiment. FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a side view, and FIGS. Showing operation.

In the bulldozer automatic suspension device shown in FIGS. 1 to 3, the bucket holding device 2 is a grab bucket suspended by a wire 4W from a main trolley (not shown) sliding on a girder (not shown) of an unloader. The grab bucket 4 has a pallet 8 connected to it by a connecting member (hereinafter, referred to as a suspension rod) 6 sandwiching the glove bucket 4. The pallet 8 is made of a flat steel plate having a substantially rectangular shape in a plan view, and a caterpillar stopper 12 is provided at the front and rear of the pallet 8 in order to load the bulldozer 10 stably. I try not to move. In addition, hooks 16 are provided on the sides near the four corners of the pallet 8 to which the suspension support members (wires) 14 of the suspension rod 6 are locked.

The bucket holding device 2 is made up of a combination of iron aggregates in a triangular shape when viewed from the front, and a pad 2P is provided at a portion that comes into contact with the grab bucket 4 as if it were directly sandwiched. Further, the bucket holding device 2 slides on the gantry 18 in the left-right direction of FIG. 1 on the gantry 18, and the grab bucket 4 is pinched and disengaged by this sliding. Similar to the bucket holding device 2, on the gantry 18, two carriages 20 that slide left and right on the gantry 18 are provided on each side of the bucket holding device 2.

The carriage 20 includes two upper and lower hand chucks 22 that can be extended and retracted forward and backward by the operator and can be slightly moved left and right. Since the hand chuck 22 holds the hanging rod 6, the upper end of the hanging rod 6 can be rotated by moving the hand chuck 22 back and forth and right and left. At the upper end of the suspension rod 6, a connecting pin 24 is built in, and a hydraulic cylinder 26 that allows the pin to be taken in and out by a remote control by an operator is provided. The connecting pin 24 is provided in the grab bucket 4. It engages with the engaging portion 28 provided on the lower surface.

The operation of the bulldozer automatic suspension device of the first embodiment having the above-mentioned configuration will be described with reference to FIGS.

FIG. 4 shows the bulldozer automatic suspension device in the loading waiting state of the bulldozer. The pallet 8 is placed on the ground at the center of the pedestals 18 and 18, and the wire 14 of the suspension rod 6 is connected thereto. The suspension rod 6 is gripped by a hand chuck 22, and the carriage 20 to which the hand chuck 22 is fixed and the bucket holding device 2 together on the gantry 18 are at the innermost portion for preparation for receiving the grab bucket 4. It is receding (left and right on the drawing).

In FIG. 5, the bulldozer 10 is loaded on the pallet 8. The other structure is the same as the structure shown in FIG.

In FIG. 6, a grab bucket 4 suspended by a wire 4W from a main trolley (not shown) descends between the bucket holding devices 2 and 2.

In FIG. 7, the grab bucket 4 is clamped in the space above the bulldozer 10 by advancing the bucket holding devices 2 and 2 on the mounts 18 and 18.

In FIG. 8, the carriages 20 and 20 advance to each other, and the suspension rods 6 and 6 held by the hand chucks 22 and 22 on the carriages 20 and 20 are engaged with the lower surface of the grab bucket 4. It is moved to the vicinity of the part 28. As described above, since the upper end portion of the suspension rod 6 can be rotated by the hand chuck 22, the operator remotely operates the connecting pin 24 provided on the upper end portion of the suspension rod 6. The glove bucket 4 is brought into contact with the engaging portion 28 on the lower surface thereof. Next, the hydraulic cylinder 26 is also operated by remote control so that the connecting pin 24 is completely engaged in the engaging portion 28. The above operation is performed for each suspension rod 6, and the pallet 8 loaded with the bulldozer 10 is connected to the grab bucket 4.

When the pallet 8 is completely connected to the grab bucket 4 as described above, the bucket holding device 2 is retracted, the hand chuck 22 is disengaged, and the carriage 20 is retracted as shown in FIG. The pallet 8 is suspended by the grab bucket 4, and the unloader transfers the pallet 8 to an arbitrary hold.

That is, in the first embodiment, the pallet 8 is connected to the grab bucket 4 of the unloader which is sandwiched between the bucket holding devices 2 and 2 and made stationary by a robot hand (hand chuck 22) that is remotely operated. The suspension rod 6 is locked and connected, and the unloader is operated to transfer the bulldozer 10 on the pallet 8 to an arbitrary hold.

The bulldozer 10 transferred to an arbitrary hold moves out of the pallet 8 by self-propelled, and the materials such as iron ore and coal in the hold start to be arranged in a form that the grab bucket 4 can easily grab. During this time, the unloader transfers the empty pallet 8 to the quay as shown in FIG.

In FIG. 11, a state in which the grab bucket 4 is held by the bucket holding devices 2 and 2 and the hanging rods 6 and 6 are chucked by the hand chuck 22 to separate the pallet 8 from the glove bucket 4. Shows. The connecting pin 24 at the tip of the suspension rod 6 is disengaged from the engaging portion 28 on the lower surface of the grab bucket 4 by operating the hydraulic cylinder 26. Next, the carriages 20 and 20 are retracted, the bucket holding devices 2 and 2 are separated from each other, the grab bucket 4 is released, the bulldozer 10 is returned to the working folder, and unloading is started. An empty bulldozer automatic suspension device remains on the quay as shown in Fig. 4.

When all the unloading work in the hold is completed, the grab bucket 4 returns to the bulldozer automatic suspension device on the quay again and the empty pallet 8 as shown in FIGS. Are connected to head for the hold. When the bulldozer 10 is loaded on the pallet 8 in the hold, it goes to another hold or returns to the quay.

Next, a bulldozer automatic suspension device according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a front view, FIG. 13 is a plan view, FIG. 14 is a side view, and FIGS. 15 to 22 show the operation. The difference between the second embodiment and the first embodiment described above is that the suspension rod 6 is directly connected to the bulldozer 10 for transportation or is transported via the pallet 8 as in the previous example. Therefore, in the first and second embodiments, the same or similar components are designated by the same reference numerals and the description thereof will be omitted.

In FIGS. 12 to 14, a hook 32 with a monkey ring is provided at the tip of the wire 14 a of the suspension rod 6 of the automatic bulldozer suspension device, and a hook 34 for suspension is provided on the outside of the caterpillar of the bulldozer 10. Have been laid up.

Next, the operation of the bulldozer automatic suspension device according to the second embodiment will be described with reference to FIGS.

FIG. 15 shows an empty bulldozer automatic suspension device without the bulldozer 10, and FIG. 16 shows that the bulldozer 10 is stopped at the center of the mounts 18, 18. In FIG. 17, the grab bucket 4 descends between the bucket holding devices 2 and 2, and in FIG. 18 the grab bucket 4 is sandwiched between the bucket holding devices 2 and 2.

In FIG. 19, since the carriages 20 and 20 advance and the suspension rods 6 and 6 also advance, the monkey ring hook 32 provided at the tip of the wire 14 a of the suspension rod 6 is attached to the bulldozer 10. It is attached to a hook 34 provided on the outside of the caterpillar. Since this work is carried out at a sufficiently low place, it is carried out manually.

Since the grab bucket 4 and the bulldozer 10 are connected by the suspension rod 6, the bulldozer 10 is suspended and supported by the unloader as shown in FIG.

The bulldozer is separated by an arbitrary hold, and the grab bucket 4 returns to the quay as it is empty as shown in FIG. 21 and goes through the form of FIG. 22 and the hanging rod 6 as shown in FIG. The hand chuck 22 to hold, and the work of unloading the inside of the hold is continued.

Further, with reference to FIGS. 23 to 30, a bulldozer automatic suspension device according to a third embodiment of the present invention will be described. FIG. 23 is a front view, FIG. 24 is a side view, and FIGS.

In the bulldozer automatic suspension device shown in FIGS. 23 to 25, the yagura member 40 for bucket guide is suspended and supported by the wire 4W from the main trolley (not shown) sliding on the girder (not shown) of the unloader. The glove bucket 4 is guided by a plurality of guide rollers 42 and also a plurality of guide rollers 44, and is placed on the outer frame portion 48 of the pallet 46.

The yagura member 40 includes a base 50 provided on the surface of the earth, and a hydraulic cylinder 54 for standing operation and a bending leg 56 serving as a reinforcing member on the back surface, with a pivot portion 52 as a center of rotation. It is fixed by holding it. The pivot portion 52 is provided at one end of the main member 58, and one beam 60 is fixed to each of the two main members 58, 58.

Between the front end portions of the beams 60, 60, a guide roller arm 62 having a substantially concave V shape is provided upward, and a plurality of guide rollers 44 are provided on the upper surface of the guide roller arm 62. . A guide roller arm 64 is provided on the upper part of the beam 60 in an oblique direction so that the rotation surfaces of the guide rollers 42 face each other when the yagura members 40, 40 are erected. A plurality is provided.

The bulldozer 10 is loaded on the bottom plate 66 of the pallet 46. A stopper 68 for preventing the backward movement of the bulldozer 10 is provided in the inner portion of the bottom plate 66, and the back surface of the stopper 68 is in contact with a fixed guide 70 provided on the ground, and the stopper 68 is provided. The place on the ground is clear.

A hydraulic cylinder 74, which has a connecting pin 72 built-in and which can be taken in and out by a remote operation by an operator, is provided above the outer frame 48 of the pallet 46. The connecting pin 72 engages with the engaging portion 28 provided on the lower surface of the grab bucket 4.

The operation of the bulldozer automatic suspension device of the third embodiment having the above-described structure will be described with reference to FIGS. 25 to 30.

FIG. 25 shows a state in which a pallet 46 for carrying a bulldozer is placed between two opposed yagura members 40, 40. The yagura members 40, 40 are inclined rearward in preparation for receiving the pallet 46 and the bulldozer 10.

In FIG. 26, the bulldozer 10 is loaded on the pallet 46. The other structure is the same as the structure shown in FIG. 25 described above.

In FIG. 27, the hydraulic cylinder 54 extends so that the yagura member 40 moves in a facing direction with respect to each other with the pivot portion 52 as the center of rotation.

In FIG. 28, the grab bucket 4 suspended from the main trolley (not shown) by the wire 4 W descends on the yagura members 40, 40. The grab bucket 4 is guided in the middle of both yagura members 40, 40 in the left-right direction in the drawing by a plurality of guide rollers 42, and is further guided in the front-rear direction of the bulldozer 10 by a plurality of guide rollers 44. Then, the pallet 46 is seated in the center.

Since the glove bucket 4 is accurately positioned and seated on the pallet 46 as described above, the connecting pin 72 provided on the upper side of the outer frame portion 48 of the pallet 46 operates the hydraulic cylinder 74. And engages with the engaging portion 28 provided on the lower surface of the grab bucket 4. As described above, the palette 46 on which the bulldozer is loaded is connected to the glove bucket 4.

As described above, when the pallet 46 is completely connected to the grab bucket 4, the yagura members 40, 40 are tilted rearward again and the pallet 46 is moved by the grab bucket 4 as shown in FIG. In a suspended form, the pallet 46 is transferred to an arbitrary hold by an unloader as shown in FIG. After that, as described in detail in the first embodiment, the empty pallet 46 is returned to the quay again as shown in FIG. 25, and the work of the bulldozer 10 is awaited.

In other words, in the third embodiment, the grab bucket 4 is lowered to the yagura member 40 which uses the guide rollers 42 and 44 a lot, and the sphere is placed on the member having a concave shape for centering. The glove bucket 4 and the pallet 46 are engaged with each other.

[0051]

[Effect of device]

 As described above, in the bulldozer automatic hoisting device of claim 1, the glove bucket of the ship unloader for loading and unloading ships and the pallet loaded with the bulldozer, which are provided on the quay, are securely connected by the connecting member by the attaching / detaching device also provided on the quay. Since it is connected to the, the sling work by wire between the grab bucket and the bulldozer, which has been done conventionally, is omitted, and the safety of the work is significantly improved, and the work staff can be reduced.

Further, since the working time on the unloading side is halved, the cargo handling efficiency of the unloader is improved.

According to the bulldozer automatic hoisting device of the second aspect, the glove bucket holding device makes the glove bucket suspended by the wire from the main trolley stand still, thereby improving work safety and working time. Can be shortened.

Further, since the grab bucket and the pallet are connected and disconnected by the connecting member gripping device, it is possible to improve work safety.

Further, the connecting member is composed of a rigid rod portion and a wire rope, and the wire rope is capable of absorbing shocks during lifting and hanging.

According to the bulldozer automatic suspending device of the third aspect, since the pallet is not used, the carrying weight is reduced.

According to the bulldozer automatic suspending device of the fourth aspect, the grab bucket is surely guided to the predetermined position by the guide member of the yagura member, so that the grab bucket and the pallet can be connected easily and surely. Further, since the outer frame portion of the pallet directly engages with the lower surface of the glove bucket, the connecting member is omitted and the number of parts is reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a bulldozer automatic suspension device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the bulldozer automatic suspension device according to the first embodiment.

FIG. 3 is a side view of the bulldozer automatic suspension device according to the first embodiment.

FIG. 4 is a front view showing an operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 5 is a front view showing an operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 6 is a front view showing the operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 7 is a front view showing the operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 8 is a front view showing the operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 9 is a front view showing an operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 10 is a front view showing an operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 11 is a front view illustrating the operation of the bulldozer automatic suspension device according to the first embodiment.

FIG. 12 is a front view showing a bulldozer automatic suspension device according to a second embodiment of the present invention.

FIG. 13 is a plan view of a bulldozer automatic suspension device according to a second embodiment.

FIG. 14 is a side view of the bulldozer automatic suspension device according to the second embodiment.

FIG. 15 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 16 is a front view showing an operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 17 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 18 is a front view illustrating the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 19 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 20 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 21 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 22 is a front view showing the operation of the bulldozer automatic suspension device according to the second embodiment.

FIG. 23 is a front view showing a bulldozer automatic suspension device according to a third embodiment of the present invention.

FIG. 24 is a side view of the bulldozer automatic suspension device according to the third embodiment.

FIG. 25 is a front view showing the operation of the bulldozer automatic suspension device according to the third embodiment.

FIG. 26 is a front view showing the operation of the bulldozer automatic suspension device according to the third embodiment.

FIG. 27 is a front view showing the operation of the bulldozer automatic suspension device according to the third embodiment.

FIG. 28 is a front view showing an operation of the bulldozer automatic suspension device according to the third embodiment.

FIG. 29 is a front view showing the operation of the bulldozer automatic suspension device according to the third embodiment.

FIG. 30 is a front view showing an operation of the bulldozer automatic suspension device according to the third embodiment.

[Explanation of symbols]

 2 Bucket holding device 4 Grab bucket 6 Suspending rod 8,46 Pallet 10 Bulldozer 14,14a Wire 22 Hand chuck 40 Yagura member 42,44 Guide roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Shuji Kami 650-4 Hoshikuki-cho, Chuo-ku, Chiba City, Chiba Prefecture (72) Kenji Kamiko 2721-160 Yamazaki, Noda City, Chiba Prefecture

Claims (4)

[Scope of utility model registration request] 1. A girder held at a high position by a bridge pier, a main trolley movable along the girder, a grab bucket suspended up and down with respect to the main trolley, and a flat bulldozer for loading. A pallet, a connecting member for connecting the pallet to the glove bucket so as to suspend the pallet, a stand installed to face the pallet so as to sandwich the pallet, and the connecting member provided on the mount for the grab A bulldozer automatic suspension device including a detaching device that is attached to and detached from a bucket and a pallet. 2. The connecting member according to claim 1, wherein the connecting member comprises a rod having an upper end connected to the grab bucket, and a wire rope connected to the lower end of the rod and the pallet, and the attaching / detaching device is a glove. An automatic lifting device for a bulldozer, comprising a grab bucket holding device for holding a bucket stationary. 3. A girder held at a high position by a bridge pier, a main trolley movable along the girder, a grab bucket suspended up and down with respect to the main trolley, and a bulldozer mounted on the grab bucket. From a connecting member that connects so as to be suspended, a gantry installed to face each other so as to sandwich the bulldozer on the quay, and a detaching device that is provided on the gantry and that attaches and detaches the connecting member to the glove bucket and the bulldozer A bulldozer automatic suspension device that is configured. 4. A girder held at a high position by a bridge pier, a main trolley movable along the girder, a grab bucket suspended up and down with respect to the main trolley, and a bottom plate on which a bulldozer is mounted, and A pallet for loading the bulldozer, the pallet being connected to the bottom plate and having an outer frame portion that is erected so as to straddle the bulldozer on the bottom plate; and a connecting device for connecting the pallet to the glove bucket. , A connecting member for connecting, a gantry installed to face the pallet so as to sandwich the pallet, and a guide device provided on the gantry for guiding the descending grab bucket to a position directly above the pallet. Bulldozer automatic suspension device.