JPH0886183A - Suspension device for hose or the like for underground excavator - Google Patents

Abstract

PURPOSE: To lessen a worker's burden and to prevent offset load from being applied to a crane boom. CONSTITUTION: A hydraulic hose 72 and an earth removing hose 84 are respectively wrapped round reels 76, 86, and the reels 76, 86 are respectively supported on running blocks 92, 94 in such a manner as to be freely rotated. The running blocks 92, 94 are disposed in positions symmetical about a suspension wire 58, and in such a condition, the running blocks 92, 94 are laid on a wire 96 for the running block. The wire 96 for the running blocks is connected to one hoist 100 to be taken up and unwound, whereby the wire 96 for the running blocks supports the running blocks 92, 94 with the same load. The wire 96 for the running blocks is taken up and unwound by the hoist 100 to elevate the running blocks 92, 94 at the same time. Thus, the reels 76, 86 are elevated simultaneously to feed out and draw in the hydraulic hose 72 and the earth removing hose 84.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoisting device for an underground excavator hose and the like, and more particularly to sending out a mud hose and a hydraulic hose so as to correspond to the lifting operation of an excavator suspended by a wire. The present invention relates to a suspension device such as a hose for an underground excavator that performs pulling and pulling.

[0002]

2. Description of the Related Art An underground excavator 10 shown in FIG.
It is suspended via a crane boom (not shown) so that it can be raised and lowered. A suspension device such as a hose for an underground excavator is configured to suspend the hydraulic hose 14 and a sludge drain hose 22, and one end of the hydraulic hose 14 is attached to the left upper end of the underground excavator 10. The hydraulic hose 14 is extended to the ground via the left reel 16, and the other end is connected to a hydraulic pump (not shown). As a result, the hydraulic motor (not shown) in the underground excavator is driven by the hydraulic pressure supplied from the hydraulic pump, and the cutters 17, 17 at the tip end of the underground excavator rotate.

A wire 1 is attached to the left upper end of the underground excavator 10.
8, one end of which is attached, and the wire 18 is a roller 20A,
It is wrapped around 20B. The rollers 20A and 20B are rotatably supported by the support member of the left reel 16. The other end of the wire 18 is attached to the crane. By disposing the wire 18 along the hydraulic hose 14 in this manner, it is possible to prevent a load from acting on the hydraulic hose 14.

Also, one end of a sludge draining hose 22 is attached to the upper right end of the underground excavator 10, and
One end of the is extended to the tip of the underground excavator 10. The sludge hose 22 is extended to the ground via the right reel 24, and the other end of the sludge hose 22 is connected to a sludge pump (not shown). Therefore, the excavated earth and sand excavated by the cutters 17, 17 of the underground excavator 10 are discharged to the ground via the drainage hose 22 together with the muddy water supplied into the excavation trench.

A wire 2 is attached to the upper right end of the underground excavator 10.
6, one end of which is attached and the wire 26 is a roller 28A,
It is wrapped around 28B. The rollers 28A and 28B are rotatably supported by the support member of the right reel 24. The other end of the wire 26 is attached to the crane. As described above, by disposing the wire 26 along the sludge discharge hose 22, it is possible to prevent the load from acting on the sludge discharge hose 22.

The left reel 16 is rotatably supported by the left moving pulley 30, and the left moving pulley 30 is hung on a wire 32. One end of the wire 32 is attached to the bar 34, and the other end of the wire 32 is attached to the hoist 38 via a left constant pulley 36. The left constant pulley 36 is rotatably supported by the bar 34, and the hoist 38 is attached to the crane body. Therefore, the left reel 16 moves up and down when the wire 32 is wound and rewound by the hoist 38. The bar 34 is suspended on the crane.

The right reel 24 is rotatably supported by the right moving pulley 40, and the right moving pulley 40 is wound around a wire 42. One end of the wire 42 is attached to the bar 34, and the other end of the wire 42 is attached to the hoist 46 via a right constant pulley 44. The right fixed pulley 44 is rotatably supported by the bar 34, and the hoist 46 is attached to the crane body. Therefore, the right reel 24 moves up and down by winding and rewinding the wire 42 with the hoist 46.

In the case of suspending the hydraulic hose 14 and the sludge drain hose 22 with the suspension device such as the hose hose of the underground excavator constructed as described above, in order to balance the loads acting on the left and right of the crane boom, the left side It is necessary to position the reels 16 and the right reels 24 at the same height and set the elevation amounts of the left reels 16 and the right reels 24 to be the same. Therefore, the left reel 16 and the right reel 24
It is necessary to adjust the left hoist 38 and the right hoist 46 so that the respective hoisting amounts are the same.

[0009]

However, since the operator adjusts the left hoist 38 and the right hoist 46, there is a problem that the operator's burden is heavy. The same load may not be applied to the left and right sides of the crane boom due to piping resistance and the like, and if the hoist on one side fails, the load balance between the left and right sides of the crane boom may be disrupted due to incorrect operation of the hoist. This allows
There is a problem that an unbalanced load is applied to the crane boom because the left and right load balance of the crane boom is lost.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the burden on the operator and to prevent an unbalanced load from being applied to the crane boom.

[0011]

In order to achieve the above-mentioned object, the present invention is provided in an underground excavator which is suspended by a suspension wire and rotates a cutter at a tip end to excavate underground. In a suspending device such as a hose for an underground excavator that feeds or retracts a pair of hose members and the like that are hung on a pair of reel members by following up and down movements of the underground excavator, centering the suspension wire. Support the pair of reel members with a pair of moving pulleys arranged at substantially symmetrical positions, hang the pair of moving pulleys on a wire for a moving pulley, and wind the wire for a moving pulley on one hoist. It is characterized in that the pair of moving pulleys is simultaneously moved up and down by connecting so as to be able to rewind and rewind, and rewinding and rewinding the moving pulley wire by the one hoist.

[0012]

According to the present invention, a pair of hose members and the like are hooked on a pair of reel members, and the pair of reel members are rotatably supported by a pair of moving pulleys. Then, the pair of moving pulleys were arranged at positions substantially symmetrical with respect to the hanging wire, and in this state, the pair of moving pulleys were hung on the moving pulley wire. The moving pulley wire is connected to one hoist so as to be able to be wound and unwound, whereby the moving pulley wire supports a pair of moving pulleys under the same load. The pair of moving pulleys is simultaneously moved up and down by winding and unwinding the moving pulley wire with this hoist. As a result, the pair of reel members move up and down at the same time, and the pair of hose members and the like are delivered and retracted.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A suspension device for hoses for an underground excavator according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a side view of a suspension device 50 of an underground excavator in which a suspension device such as a hose for an underground excavator according to the present invention is used, and FIG. 2 is a front view thereof. The underground excavator suspension device 50 includes a crawler crane body 52, and a crane boom 54 is erected and supported at a front end portion of the crawler crane body 52 at a predetermined inclination angle. Sheaves 56 </ b> A and 56 </ b> B are rotatably supported on the upper end of the crane boom 54.
A suspension wire 58 hung on A and 56B is a moving pulley 60,
It is hung on 60.

The movable pulleys 60, 60 are feed cylinders 62.
Is rotatably supported on the upper end of the feed cylinder 62.
An underground excavator 64 is provided at the lower end of the. Also,
The suspension wire 58 is wound around a hoist 66 (see FIG. 3), and the hoist 66 is provided inside the crawler crane main body 52. Then, the hoist 66 is actuated to feed and retract the suspension wire 58, so that the underground excavator 64 moves up and down. FIG. 4 shows a suspension device 70 such as a hose for an underground excavator according to the present invention. The hoisting device 70 such as the hose of the underground excavator is used for the hydraulic hose 7.
2. The sludge discharge hose 74 is configured to be suspended, and one end of the hydraulic hose 72 is attached to the upper left end of the underground excavator 64. The hydraulic hose 72 is extended to the ground via the left reel 76, and the other end is connected to a hydraulic pump (not shown). This allows the hydraulic motor (not shown) in the underground excavator to be supplied with the hydraulic pressure supplied from the hydraulic pump.
Is driven to rotate the cutters 78, 78 at the tip of the underground excavator.

A wire 8 is attached to the left upper end of the underground excavator 64.
0 is attached to one end, and the wire 80 is connected to the roller 82A,
It is wrapped around 82B. The rollers 82A and 82B are rotatably supported by the support member of the left reel 76. The other end of the wire 80 is attached to the crawler crane body 52. By disposing the wire 80 along the hydraulic hose 14 in this manner, it is possible to prevent a load from acting on the hydraulic hose 14.

Further, one end of a sludge discharge hose 84 is attached to the upper right end of the underground excavator 64, and
One end of is extended to the tip of the underground excavator 64. The mud discharge hose 84 is extended to the ground via the right reel 86, and the other end of the mud discharge hose 84 is connected to a mud discharge pump (not shown). This sludge pump is installed on the ground. Therefore, the cutters 78, 78 of the underground excavator 64 are
The excavated earth and sand excavated in (1) is discharged to the ground via the mud discharge hose 82 together with the muddy water supplied into the excavation groove.

A wire 8 is attached to the upper right end of the underground excavator 64.
8 is attached to one end, and the wire 88 is connected to the roller 90A,
It is wrapped around 90B. The rollers 90A and 90B are rotatably supported by the support member of the right reel 24. The other end of the wire 88 is attached to the crawler crane main body 52. By thus disposing the wire 88 along the sludge discharge hose 84, it is possible to prevent the load from acting on the sludge discharge hose 84. The wire 8
The length of 0 and the length of the wire 88 are set to be the same.

The left reel 76 is rotatably supported by the left movable pulley 92, and the right reel 86 is rotatably supported by the right movable pulley 94. The left movable pulley 92 and the right movable pulley 94 are respectively hung on the movable pulley wire 96.
Further, the moving pulley wire 96 is composed of constant pulleys 98A, 98B, 9
8C, 98D, the left end of which is attached to the crawler crane main body 52.

The left end of the movable pulley wire 96 is attached to the hoist 100, and the hoist 100 is attached to the crane body 52. Fixed pulley 98A, 98B
The fixed pulleys 98C and 98D are the top bracket 95.
It is rotatably supported so as to be symmetrical. The top bracket 95 is fixed to the crane boom 54.

The operation of the suspension device for a hose for an underground excavator according to the present invention having the above-described structure will be described.
Assuming that the weights of the hydraulic hose 72 and the sludge hose 84 attached to the underground excavator 64 are W ₁ and W ₂ , respectively, since the weights W ₁ and W ₂ are different, the tensile force F ₂ of the wire 80 and the wire 88 The tensile force F ₃ is different. However, since the tensile force F ₂ and the tensile force F ₃ are extremely small compared with the weight W of the underground excavator 64, a lightweight weight is attached or the wire 80 and the wire 88 are attached to the position of the center of gravity of the underground excavator 64. By mounting in the vicinity, the relations of the following equations (1) and (2) are established.

Load acting on the left moving pulley 92: 2F = W ₁ + 2F ₂ (1) Load acting on the right moving pulley 94: 2F = W ₂ + 2F ₃ (2) In this case, the left moving pulley 92 and the right side The vertical load balance acting on the moving pulley 94 is balanced, and the left moving pulley 92 and the right moving pulley 94 stop at predetermined positions (see FIG. 5).

On the other hand, when the underground excavator 64 is used to excavate a groove in the ground, the hoist 66 is operated to feed the suspension wire 58, whereby the underground excavator 64 descends. As a result, the tensile force F ₂ of the wire 80 and the tensile force F _{3 of the} wire 88 are
And becomes larger, and the relationship between the formulas (1) and (2) becomes the formula (3).
Changes to 2F <W ₁ + 2F ₂ = W ₂ + 2F ₃ (3) Therefore, depending on the descending amount of the underground excavator 64, the hoist 10
The wire 96 for the moving pulley is sent out from
2 and the right movable pulley 94 are respectively lowered by the same amount. As a result, the left reel 76 and the right reel 86 respectively descend by the same amount, and the hydraulic hose 72 and the sludge hose 84 are sent out following the descending amount of the underground excavator 64.
As a result, the trench is excavated in the ground by the underground excavator 64 (see FIG. 6).

When the underground excavator 64 is pulled up from the state shown in FIG. 6 after the excavation of the slot is completed, the hoist 66 is operated to pull in the suspension wire 58 to pull the underground excavator 6 from the state.
4 rises. Accordingly, the tensile force F ₃ of the tensile force F ₂ and the wire 88 of the wire 80 is reduced, formula (1), the relationship of formula (2) is changed to the equation (4). 2F> W ₁ + 2F ₂ = W ₂ + 2F ₃ (4) Therefore, according to the amount of rise of the underground excavator 64, the hoist 10
The wire 96 for the movable pulley is pulled into 0, and the movable pulley 92 on the left side is pulled.
And the right movable pulley 94 are respectively raised by the same amount. As a result, the left reel 76 and the right reel 86 are respectively raised by the same amount, and the hydraulic hose 72 and the sludge hose 84 are drawn in following the amount of elevation of the underground excavator 64.

In this way, when the underground excavator 64 is moved up and down, the left movable pulley 9 follows the amount of elevation of the underground excavator 64.
Since the 2 and right moving pulleys 94 are moved up and down by the same amount, the vertical accuracy of the underground excavator 64 is not adversely affected when the underground excavator 64 is moved up and down. Further, since a load of 2F acts on each of the left moving pulley 92 and the right moving pulley 94, an F load acts on the constant pulleys 98A and 98B and the constant pulleys 98C and 98D. Since the constant pulleys 98A, 98B and the constant pulleys 98C, 98D are symmetrically supported by the top bracket 95, the load acting on the left and right of the crane boom 54 can be evenly distributed. Therefore, it is possible to prevent an unbalanced load from being applied to the crane boom 54.

In the above-mentioned embodiment, the case where the driving hydraulic hose 72 and the sludge discharge hose 84 are sent and drawn by the suspending device for the hose for the underground excavator according to the present invention has been described, but the present invention is not limited to this. When the underground excavator is electric, it can also be used for sending out and retracting the wiring cable, and for the hydraulic hose that supplies the hydraulic pressure used to operate the adjustable guide installed in the underground excavator. Send out,
It can also be used for retraction.

[0026]

As described above, according to the hoisting device for an underground excavator hose or the like according to the present invention, a pair of moving pulleys are arranged at positions substantially symmetrical with respect to the hoisting wire. In this state, the pair of movable pulleys were hung on the movable pulley wire. The moving pulley wire is connected to one hoist so as to be able to be wound and unwound, whereby the moving pulley wire supports a pair of moving pulleys under the same load. The pair of moving pulleys is simultaneously moved up and down by winding and unwinding the moving pulley wire with this hoist. As a result, the pair of reel members move up and down at the same time, and the pair of hose members and the like are delivered and retracted.

As described above, since the moving pulley wire supports a pair of moving pulleys, which are arranged symmetrically with respect to the suspension wire by the operation of one hoist, with the same load,
A uniform load is applied to substantially symmetrical positions around the hanging wire. Therefore, the operator does not need to adjust the two hoists as in the conventional case, and the burden on the operator can be reduced.

Further, even if the hoist fails or is misoperated by using one hoist, the suspension loads of the pair of moving pulleys are always kept equal, so that an unbalanced load is applied to the crane boom. Can be prevented. Furthermore, since it is possible to prevent an unbalanced load from being applied to the crane boom, there is no need to use a crane boom that is stronger than necessary.

[Brief description of drawings]

FIG. 1 is a side view of a suspension device for an underground excavator in which a suspension device for a hose for an underground excavator according to the present invention is used.

FIG. 2 is a front view of a suspension device for an underground excavator in which a suspension device for a hose for an underground excavator according to the present invention is used.

FIG. 3 is a perspective view of a suspension device for an underground excavator in which a suspension device for a hose for an underground excavator according to the present invention is used.

FIG. 4 is a front view of a suspension device for a hose for an underground excavator according to the present invention.

FIG. 5 is a side view illustrating the operation of the suspension device for the hose for an underground excavator according to the present invention.

FIG. 6 is a side view illustrating the operation of the suspension device for a hose for an underground excavator according to the present invention.

FIG. 7 is a front view of a conventional suspension device such as a hose for an underground excavator.

[Explanation of symbols]

 54 ... Crane boom 58 ... Suspension wire 64 ... Underground excavator 70 ... Suspension device for hoses for underground excavator 72 ... Hydraulic hoses 76, 86 ... Reel 84 ... Mud hose 92, 94 ... Moving pulley 96 ... Dynamic Pulley wire 100 ... Hoist

Claims (2)

[Claims] 1. A pair of hose members, etc., which are provided on an underground excavator that is suspended from a suspension wire and rotates a cutter at a tip end thereof to excavate the ground, each pair being hung on a pair of reel members, In a suspending device such as a hose for an underground excavator that feeds or retracts in accordance with the up-and-down movement of the underground excavator, a pair of movable pulleys arranged at positions that are substantially symmetrical with respect to the suspension wire. A pair of reel members are respectively supported, the pair of moving pulleys are hung on a wire for a moving pulley, the moving pulley wire is connected to one hoist so as to be rewound and rewound, and the one hoist is used for the movement. A suspending device for a hose for an underground excavator or the like, wherein the pair of moving pulleys are simultaneously moved up and down by winding and unwinding a pulley wire. 2. The suspension device for a hose for an underground excavator according to claim 1, wherein the pair of movable pulleys are provided on a crane boom.