JPH0611999B2 - Soil removal device for claw-shaped double curved metal fittings equipped on excavation work machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to a border line that is constructed prior to the foundation work of a house or an adjacent building (hereinafter simply referred to as “boundary line”) that is full of adjacent lines (boundary line). (10 mm or more) above, the present invention relates to a soil removing device for a claw-shaped bi-curved metal fitting equipped with an excavating work machine for constructing a continuous wall.

"Prior art" Conventionally, in this type of excavating work machine, a pair of chain wheels are supported on a machine body located between two steel plates, and a forward and reverse rake chain suspended between the chain wheels is provided with a rake face up and down. A large number of two-sided curved metal fittings with claws are attached. Then, through the forward and reverse rotations of the pair of chain wheels and the chain, the two claw-shaped curved surface metal fittings are circularly moved to excavate the earth and sand.

Further, these excavating work machines are not provided with a soil removing device for the claw-shaped curved surface metal fittings.

“Problems to be Solved by the Invention” As described above, in the conventional excavator that does not have the soil removing device,
If sediment sticks to the rake face, it will not be possible to excavate the sand, or it will hinder the excavation function, and it will take a long time to remove the stuck excavated sediment, resulting in poor work efficiency and work. There was a possibility that it would take a considerably long time.

[Means for Solving the Problems] Therefore, the present inventor effectively utilizes the revolving transition of the forward and reverse claw-shaped curved surface metal fittings without using any power, and thus the claw-shaped curved surface metal fittings. Removal of the excavated soil that adheres or sticks to the rake face (hereinafter referred to as the rake face, the rake face of the curved surface metal fittings with claws) almost completely and reliably. Invented the soil device. And this soil removing device, by the orbital transition of the claw type curved surface metal fittings with the nail,
While being retracted in the direction orthogonal to this orbiting surface,
This retreat removes the excavated earth and sand adhering to the rake face, the earth removal claw and the operating rod, the intermediary joint mechanism that secures the horizontal movement of the operating rod, the return of the operating rod, and the removal claw of the earth removing claw to the rake face. It is composed of a spring that controls restoration.

In order to prevent the earth and sand removed by the soil removal device from falling onto the side surface of the excavation work machine and scattering, this soil removal device is installed on the side surface of the excavation work machine and on the claws of the excavation work machine. It is a mechanism for removing soil by moving the operating rod and the earth removing claw forward or backward in a direction orthogonal to the circling surface of the two-sided curved metal fittings.

Also, in order to reliably remove the excavated earth and sand adhering to the rake surface, the operating rod and the earth removing claws smoothly move forward or backward in the horizontal direction in synchronization with the circular movement of the claw-shaped curved surface metal fittings with claws. In order to prevent any damage to the rake face, the operating rod and the earth removing claw are structured to operate via a medium joint mechanism and a spring.

In particular, in the present invention, the speed and stop of the orbital transition of the claw-shaped curved surface metal fittings of the excavating work machine and the transition speed and stop of the operating rod and the earth removal claw of the soil removing device are synchronized. , In order to prevent this soil removing device from driving by itself, the operating rod and the earth removing claw are rotated by the forward or reverse rotation of the claw-shaped curved surface metal fittings and through the intermediary joint mechanism. It is configured to retreat in the horizontal direction, to be detached from the claw-shaped curved surface metal fittings, and further to advance (return) in the horizontal direction via the restoring force of the intermediate joint mechanism and the spring.

[Operation] Next, the operation of the present invention will be described. An excavator equipped with a swingable turret on a boom erected on a crane and a large number of claw-shaped curved surface metal fittings with an upper pulley on the turret. Hanging in a cantilever manner. Therefore, since the steel plate on the outer side of the excavator is flat, it can be arranged so as to come into contact with a building or the like.

The excavator suspended in this way is placed on the proximity line, while the crane is placed so that it can travel a little further away from this position.

In this state, the claw type curved surface metal fittings of the excavator are orbitally moved in the forward and reverse directions to excavate and discharge the earth and sand, and to sink the earth sequentially.

During this work, the excavated earth and sand are attached to the rake face, and when the claw-shaped curved surface metal fittings of the excavating work machine are in the normal rotation (clockwise rotation), the claw-shaped curved surface metal fittings excavate the earth and sand, After going around the upper part of the earth and then going down a little, the earth removing device is installed here.

Therefore, at the tip of the operating rod and the earth removing claw at the forward limit position, the excavated earth and sand adhering to the rake surface of the descending claw-shaped curved surface metal fitting and its end face are stopped,
With the downward movement of the rake face, the tip of the operating rod and the soil removing claw are pressed. As a result, the operating rod and the earth removing claw are moved backward toward the steel plate on the inner side (the tower side), and the excavated earth and sand adhering to the rake face are stripped off,
The stripped soil is dropped downward.

On the other hand, as the actuating rod and the earth removing claw retreat, the connecting rod rotates about a shaft as a fulcrum in a circular arc trajectory and pulls the spring.

After that, when the operating rod and the soil removing claw reach the retracted limit position, the tip of the operating rod and the soil removing claw come off the rake face, whereby the soil removal is completed.

In this state, the connecting rod is rotated by about 90 ° in the direction of arrow A (Fig. 6), and the trochanter at the tip of the operating rod is attached to the side of the curved surface metal fitting with claws. It is in a contacted state.

Then, when the rake face further lowers, the trochanter comes off from the side surface of the claw-shaped curved metal fittings with claws. As a result, the restriction on the operating rod and the spring is released, the connecting rod is reversed through the restoring force of the spring, and the operating rod and the earth removal pawl are returned to the forward limit position, and the next cauldron type with a pawl. Corresponds to the lowering of curved metal fittings.

When the claw-shaped curved surface metal fittings of the excavating work machine are reversed (counterclockwise rotation), the claw-shaped curved surface metal fittings excavate the earth and sand, and move to the upper part of the earth and move exactly to the excavation. When approaching near the upper part of the machine body, a soil removing device is installed here.

Therefore, the excavated earth and sand adhering to the rake surface of the rising curved double-sided metal fittings with nails and the end surface of the actuating rod at the forward limit position and the earth removing nail are stopped,
With the upward movement of the rake face, the tip of the operating rod and the soil removing claw are pressed. As a result, the operating rod and the earth removing claw are moved backward toward the steel plate on the inner side (the tower side), and the excavated earth and sand adhering to the rake face are stripped off,
The stripped soil is dropped downward.

On the other hand, as the operating rod and the earth removing claw retreat, the connecting rod rotates about a shaft as a fulcrum in a circular arc trajectory in a counterclockwise direction and pulls a spring.

After that, when the operating rod and the soil removing claw reach the retracted limit position, the tip of the operating rod and the soil removing claw come off the rake face, whereby the soil removal is completed. In this state, the connecting rod is rotated by about 90 ° in the direction of the arrow B (Fig. 6), and the trochanter at the tip of the operating rod is attached to the side of the two curved metal fittings with claws. It is in a contacted state.

Then, when the rake face further lowers, the trochanter comes off from the side surface of the claw-shaped curved metal fittings with claws. As a result, the restriction on the operating rod and the spring is released, the connecting rod is reversed through the restoring force of the spring, the operating rod and the claws are returned to the forward limit position, and the claw-shaped bifurcated metal fittings with the next come. Corresponding to the rise of.

"Example" Hereinafter, an example of the present invention will be described with reference to the drawings.
1 is a crane, 1a is its boom, and the boom 1a is provided with a swingable turret 2. An excavation work machine 4 described later is suspended from the turret 2 via an upper pulley 3 in a substantially vertical state.

The excavating work machine 4 includes two outer and inner steel plates 5 and 5a which are erected at a narrow interval, and chain wheels 6 and 7 which are axially attached to the upper and lower ends of the steel plates 5 and 5a. It is composed of a chain 9 provided with a large number of claw-shaped curved surface metal fittings 8 ... (hereinafter simply referred to as 8) wound between the chain wheels 6 and 7. The dimensions are approximately 90-120 cm in width, steel plate 5,
It is considered that the distance between 5a is 17 to 30 cm and the height is 450 to 800 cm. Further, the chain 9 wound between the chain wheels 6 and 7 is driven by a motor 10 provided between the steel plates 5 and 5a, so that the barrel-shaped curved surface metal fittings 8 with claws are rotated in the normal direction.

In the figure, 11 is a lower pulley for suspending the excavation work machine 4, and 12
Is a rope, 15 is a boundary line, and 18 is a supporting member provided on the steel plate 5a inside the excavation work machine 4 supporting the lower pulley 11. Therefore, the excavation work machine 4 includes the frame member 18, the lower pulley 11, the rope 12, and the upper pulley 3
It is suspended so as to be rotatable with respect to the boom 1a together with the turret 2 via the.

The inner steel plate 5a is provided with a long hole 19 for a restriction plate in the longitudinal direction and at the center thereof. A regulation plate 20 provided below the turret 2 is inserted into the long hole 19 so as to eliminate blind motion when the main body of the excavation work machine descends, and to reliably advance to a predetermined position. ing.

Further, the hook-shaped two-sided curved surface metal fittings 8 are a pair of brackets 2 for connecting the chain 9 and the hook-shaped two-sided curved surface metal fittings 8.
1 and 21, the brackets 21 and 21 are arranged substantially parallel to each other at an interval so that the chain 9 can be sandwiched.
Two through holes 22 are formed in each bracket 21. A pin 23 provided on the chain 9 is inserted into the through hole 22. Therefore, the bracket 2
By inserting the pin 23 into the bracket 1, the bracket 21
And the chain 9 will be connected.

Furthermore, a large wheel 24 is loosely fitted to the pin 23,
This rolling wheel 24 rolls along the chain guide 13 provided on the main body of the excavation work machine 4, and the chain 9 and the claw-shaped curved surface metal fittings 8 and the like are fluctuated by an excessive amount or earth pressure causes excavation work machine 4 to move. It is configured so that it will not be immersed inside. The claw-shaped curved surface metal fittings 8 and the claw 28 described later are
Forged products are ideal, but other methods such as forging are also possible. The chain guide 13 is provided as close as possible to the end faces of the steel plates 5 and 5a for the purpose of projecting the hook-shaped curved surface metal fittings 8 from the steel plates 5 and 5a as described later. Further, this reduces the adhesion of earth and sand to the excavation work machine 4 and contributes to the ease and simplification of the work.

Further, in the figure, reference numeral 25 denotes a cauldron main body in which brackets 21, 21 are continuously provided at the rear end, and rake faces 26 are formed on the upper and lower surfaces of the cauldron main body 25, respectively. (It is in a suspended state) and has a substantially T-shape when viewed from the side. In this example, several through holes 27 are formed in the rear part of the rake face 26 for the purpose of facilitating the fall of the excavated earth and sand together with the curved surface of the rake face 26. Even high quality excavated earth and sand can be dropped from the claw-shaped curved surface metal fittings 8. Again rake face 2
The root portion of 6 is made considerably thick so that it can cope with earth pressure resistance.

Further, a pair of tenon-structured claw mounting portions are projectingly provided on the tip end side of the barrel main body 25, and claws 28 are respectively provided on the claw mounting portions. The claw 28 can be easily removed or attached through attachment means, for example, insertion / removal of a pin.

This is for the purpose of facilitating replacement of the claw 28, especially when the claw portion is worn out, or when the material of the claw 28 is adjusted to the soil quality.

The rake face 26 of the main body 25 of the main body, which is the main body of the two curved metal fittings with nails 8 configured as described above, and the main body 2 of the main body 2
Since all of the claws 28 provided on the projecting member 5 project completely from the front and rear direction and the lower end face of the steel plates 5 and 5a and also project considerably in the width direction, the spline hole to be excavated by the excavating work machine 4 is formed. The shape of is excavated one size larger than the main body of the excavation work machine 4. Therefore, the earth pressure resistance to the main body of the excavation work machine 4 can be substantially eliminated, and therefore the gravity excavation of the excavation work machine 4 becomes possible. Further, this allows the present invention to sufficiently excavate a long object as a main object.

Reference numeral 30 in the drawing denotes a soil removing device provided on the steel plate 5a inside the excavating work machine 4 in a direction orthogonal to the steel plate 5a. The soil removing device 30 is configured as follows.

That is, a vertical support plate 31 extending in a direction orthogonal to the steel plate 5a, and two shafts 32 penetrating the support plate 31,
A chain wheel 33, 33a fixed to 32a, two connecting rods 34, 34a fixed to the two shafts 32, 32a, a chain 35 suspended on the chain wheels 33, 33a, and the connecting rod. An operating rod 37 fixed to the 34, 34a via shafts 36, 36a, and an earth removing claw 38 provided in a tip end portion of the operating rod 37 for excavating earth and sand and having a U-shape in a side view, A spring 39 provided between the connecting rod 34, 34a and the support plate 31;
39a and a trochanter 40 provided at the tip of the support plate 31.

Since it is configured in this way, the tip of the operating rod 37 and the earth removing claw 38 at the forward limit position stop the excavated earth and sand attached to the rake surface 26 that makes a circuit and its end surface, Since the tip of the operating rod 37 and the earth removing claw 38 are pressed as the rake face 26 moves in the vertical direction, the operating rod 37 and the earth removing claw 38 are attached to the inner steel plate 5a.
While moving backward toward, the excavated earth and sand adhering to the rake face 26 is stripped off.

On the other hand, as the actuating rod 37 and the soil removing claw 38 retreat, the connecting rods 34, 34a rotate in the clockwise direction of the arrow A about the shafts 32, 32a as a fulcrum (the chain 9 and the claw-shaped bifurcated metal fitting 8 with claws are normally rotated. Case) or the counterclockwise direction of the arrow B (when the chain 9 and the claw type curved surface metal fitting 8 with claws are reversed) is rotated with an arc locus, and the blades 39, 39a are pulled.

After that, as the working rod 37 and the earth removing claw 38 reach the retreat limit, the tip and the earth removing claw 38 come off the rake face 26,
This completes the soil removal. This state is the continuous rod 34,
34a is in a state of being rotated in the direction of arrow A or arrow B (FIG. 6) by about 90 °, and the trochanter 40 at the tip of the actuating rod 37 is located on the side surface side of the claw-shaped curved surface metal fitting 8 with claws. It is in an attached state.

Then, when the rake face 26 is further raised or lowered, the trochanter 40
Is removed from the side surface of the two-sided curved metal fitting 8 with claws, the restriction on the operating rod 37 and the springs 39, 39a is released, and the connecting rods 34, 34a are inverted and actuated by the restoring force of the springs 39, 39a. The rod 37, the earth removing claw 38, and the like return to the forward limit position, and correspond to the rising or lowering of the claw-shaped curved surface metal fitting 8 that comes next.

Reference numeral 41 in the drawing denotes a casing, which is provided as necessary.

It should be noted that the intermediary node mechanism is also possible in other examples, for example, the seventh
As shown, the second connecting rods 42, 4 are attached to the other ends of the shafts 32, 32a.
2a is provided, and the shafts 43, 43 are attached to the second connecting rods 42, 42a.
The third connecting rod 44 is provided via a, and the connecting rods 34, 34a, the operating rod 37 and the earth removing claw 38 are moved forward and backward through this link mechanism.

[Advantages of the Invention] As described in detail above, in the present invention, the soil removing device is provided near the steel plate side surface of the excavating work machine that is narrow in plan view and includes a large number of claw-shaped curved surface metal fittings. The work rod and the soil removing claw that constitute this soil removing device are pressed through the upward or downward circular transition of the claw-shaped curved surface metal fittings with claws, and are retracted with an arc locus, and then with a spring. Since it is configured to return through an intermediary mechanism and to move forward along an arc locus, the operating rod and earth removing claws operate reliably and synchronously with the movement of the claw-shaped curved surface metal fittings and the chain, and the rake It is expected that the excavated earth and sand on the surface will be automatically and surely and easily removed, and the workability and the work efficiency will be improved.

Further, as described above, since the excavated earth and sand on the rake face can be reliably removed or dropped at this part, the excluded earth and sand does not fall into the excavator or fall from an unspecified position above the excavator, Do not damage the worker. It is also very safe without injuring other people. Furthermore, after the excavated soil is removed from the rake face, it will not stick to the vicinity of the upper part of the excavator, and the stuck sand will not fall in a lump and will be a great help to improve safety. .

Further, the soil removing device according to the present invention is such that the operating rod and the soil removing claw are moved forward or backward on the side surface of the excavating work machine and in the direction orthogonal to the circumferential surface of the claw-shaped curved surface metal fittings of the excavating work machine. As a result, the soil removed by the soil removing device does not drop on the side surface of the excavating work machine and is not scattered.

Further, according to the present invention, since the actuation rod and the earth removing claw are structured to operate via the intermediary joint mechanism and the spring, the actuation rod and the earth removing claw are synchronized with the circular transition of the claw-shaped curved surface metal fittings with claws. While moving smoothly forward or backward in the horizontal direction,
The effect of surely removing the excavated earth and sand adhering to the rake face,
This has the effect of not damaging the rake face at all, and the rake face will surely fit into the rake face even if it is worn out due to excavation or the like.

In particular, the present invention has a configuration in which the speed and stop of the orbital transition of the claw-shaped curved surface metal fittings of the excavating work machine and the transition speed and stop of the operating rod and the earth removal claws of the soil removing device are synchronized. Yes, this soil removal device does not drive itself, so it is easy to maintain and manage it, because it always follows the drive of the excavation work machine and does not need to pay attention to the synchronous drive status of the soil removal device. Is. Further, the invention is useful for energy saving without requiring a driving source. Moreover, the occurrence of failures is reduced.

[Brief description of drawings]

1 is a front view showing a suspended state of an excavating work machine, FIG. 2 is an enlarged front view of the excavating work machine, and FIG. 3 is a diagram showing FIG. FIG. 4 is a front view of a partially cutaway enlarged view of an essential part, FIG. 4 is an enlarged plan view of a soil removing device and a claw type curved surface metal fitting with claws, and FIG. 5 is a side view of FIG. FIG. 6 is an explanatory view showing an operating state of a main part of the soil removing apparatus in FIG. 4, and FIG. 7 is an enlarged plan view of another soil removing apparatus. 1: Crane, 2: Turret 3: Upper pulley, 4: Excavation work machine 5, 5a: Steel plate, 6, 7, 33, 33a: Chain wheel 8: Claw-shaped double curved metal fittings 9, 35: Chain, 11: Lower pulley 13: Chain guide 15: Boundary line 17: Proximity line, 18: Support member 19: Long hole, 20: Restriction plate 21: Bracket, 22, 27: Through hole 23: Pin, 24: Rolling wheel 25: Barrel Main body, 26: rake face 28: claw, 30: earth removing device 31: support plate 32, 32a, 36, 36a, 43, 43a: shaft 34, 34a: continuous rod, 37: operating rod 38: earth removing claw, 39 , 39a: spring 40: trochanter, 41: casing 42, 42a: second connecting rod 44: third connecting rod

Claims (1)

[Claims] 1. A pair of steel plates provided at narrow intervals, a chain that makes a circular transition between the steel plates, a pair of chain wheels for driving and tensioning the chain, and a rake face and a claw of the shaft main body. Is attached to the chain so as to completely project from the front and rear direction and the lower end surface of the steel plate, and a plurality of claw-shaped curved surface metal fittings with claws that are revolved together with the chain located between the steel plates It is a soil removal device for a claw-shaped double curved surface metal fitting equipped on a drilling work machine that is suspended in a cantilever manner by a turret mounted so that it can be swung by a crane to construct a continuous wall on a proximity line close to This earth removing device is equipped near the side surface of the steel plate on which the supporting member for suspending in a cantilever manner is provided, and the claw-shaped curved surface with claws that makes the orbital transition. With this orbiting surface through the metal fittings While being retracted in the orthogonal direction, the earth removal claw and the operating rod for stripping off the earth and sand adhering to the rake surface by this retreating, the intermediate joint mechanism for ensuring the horizontal shift of the operating rod, and the return and return of the operating rod. In an excavating work machine characterized by comprising a spring for controlling the return of the earth removing claw to the rake face, and substantially completely removing the earth and sand adhering to the claw-shaped curved metal fittings with the earth removing claw. Soil removal device for the claw-shaped curved surface metal fittings equipped with claws. The medium articulation mechanism is composed of a pair of chain wheels provided on a support plate of a casing, a chain suspended between the chain wheels, and two connecting rods interlocking with the chain wheels. A soil removal device for a claw-shaped double-sided curved surface metal fitting provided in the excavating work machine according to the first item. The medial joint mechanism includes two connecting rods fixed to two shafts provided on a supporting plate of the casing, and second connecting rods fixed to the opposite side with the supporting plate interposed therebetween. An earth removing device for a claw-shaped double curved surface metal fitting mounted on an excavating work machine according to claim 1, which is constituted by a third connecting rod connected between the second connecting rods. The two-sided curved surface with claws mounted on the excavating work machine according to claim 1, wherein the soil removing device is mounted on a side surface of a steel plate located inside (toward the turret) of the excavating work machine. Soil removal device for metal fittings.