JP2743350B2 - Suspension equipment for underground excavator hoses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device for an underground excavator hose and the like, and more particularly, to a delivery of a sludge hose and a hydraulic hose so as to cope with a lifting operation of an excavator suspended on a wire. The present invention relates to a suspension device for an underground excavator hose or the like for performing a pulling or pulling operation.

[0002]

2. Description of the Related Art An underground excavator 10 shown in FIG.
Through a crane boom (not shown). A suspension device such as an underground excavator hose is configured to suspend the hydraulic hose 14 and the drainage hose 22, and one end of the hydraulic hose 14 is attached to the upper left end of the underground excavator 10. The hydraulic hose 14 is extended to the ground via a 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 of the underground excavator rotate.

[0003] A wire 1 is provided at the upper left end of the underground excavator 10.
8, one end of the wire 18 is attached, and the wire 18 is a roller 20A;
20B. The rollers 20A and 20B are rotatably supported by a support member of the left reel 16. The other end of the wire 18 is attached to a crane. Thus, by arranging the wire 18 along the hydraulic hose 14, it is possible to prevent the load from acting on the hydraulic hose 14.

[0004] At the upper right end of the underground excavator 10, one end of a drainage hose 22 is attached.
Is extended to the tip of the underground excavator 10. The sludge hose 22 is extended to the ground via a 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 and 17 of the underground excavator 10 is discharged to the ground via the mud drain hose 22 together with the muddy water supplied into the excavation trench.

A wire 2 is provided at 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 wound around 28B. The rollers 28A and 28B are rotatably supported by a support member of the right reel 24. The other end of the wire 26 is attached to a crane. By arranging the wire 26 along the drainage hose 22 in this way, it is possible to prevent a load from acting on the drainage hose 22.

The left reel 16 is rotatably supported by a left pulley 30, and the left pulley 30 is hung on a wire 32. One end of the wire 32 is attached to a bar 34, and the other end of the wire 32 is attached to a hoist 38 via a left pulley 36. The left fixed 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 by winding and rewinding the wire 32 with the hoist 38. The bar 34 is suspended from a crane.

The right reel 24 is rotatably supported by a right pulley 40, and the right 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 the right-side fixed pulley 44. The right 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.

When the hydraulic hose 14 and the drainage hose 22 are suspended by the suspension device such as the hose hose of the underground excavator constructed as described above, the left and right sides of the crane boom are balanced in order to balance the loads acting on the left and right of the crane boom. It is necessary to position the reel 16 and the right reel 24 at the same height, and to set the lifting amounts of the left reel 16 and the right reel 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 lifting amounts are the same.

[0009]

However, since the adjustment of the left hoist 38 and the right hoist 46 is performed by the operator, there is a problem that the burden on the operator is large. Further, the same load may not act on the left and right sides of the crane boom due to piping resistance or the like, and furthermore, the hoist on one side may break down, or the load balance on the left and right sides of the crane boom may be lost due to incorrect operation of the hoist. This allows
There is a problem that an imbalanced load is applied to the crane boom when the load balance between the left and right of the crane boom is lost.

[0010] The present invention has been made in view of such circumstances, and an object of the present invention is to reduce the burden on an operator and to prevent an uneven load from being applied to a crane boom.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an underground excavator which is hung on a hanging wire and excavates underground by rotating a cutter at a tip end thereof. In a suspension device such as a hose for an underground excavator that sends out or retracts a pair of hose members and the like hung on a pair of reel members in accordance with the elevation operation of the underground excavator, The pair of reel members are respectively supported by a pair of moving pulleys arranged at substantially symmetrical positions, the pair of moving pulleys are hung on a moving pulley wire, and the moving pulley wire is wound around one hoist. The pair of movable pulleys is simultaneously connected to the pair of movable pulleys by rewindably connecting and rewinding and rewinding the movable pulley wire with the single hoist.

[0012]

According to the present invention, a pair of hose members and the like are hung on a pair of reel members, respectively, 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 was hung on the moving pulley wire. The moving pulley wire is connected to one hoist so as to be rewindable and rewindable, whereby the moving pulley wire supports the pair of moving pulleys with the same load. Then, the pair of moving pulleys is raised and lowered simultaneously by winding and rewinding the moving pulley wire with the 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 sent out and retracted.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a suspension apparatus for an underground excavator hose according to the present invention. FIG. 1 is a side view of a suspension device 50 of an underground excavator using a suspension device such as an underground excavator hose according to the present invention, and FIG. 2 is a front view thereof. The suspension device 50 of the underground excavator includes a crawler crane main body 52, and a crane boom 54 is erected at a front end of the crawler crane main body 52 at a predetermined inclination angle. Sheaves 56A and 56B are rotatably supported at the upper end of the crane boom 54.
A, the suspension wire 58 hung on 56B is a moving pulley 60,
It is multiplied by 60.

The moving pulleys 60, 60 are provided with a feed cylinder 62.
The feed cylinder 62 is rotatably supported by 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 in the crawler crane main body 52. Then, the underground excavator 64 is moved up and down by operating the hoist 66 to send and retract the suspension wire 58. FIG. 4 shows a suspension device 70 for an underground excavator hose or the like according to the present invention. A suspension device 70 such as an underground excavator hose hose is provided with a hydraulic hose 7.
2. It is configured to suspend the sludge drain hose 74, 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). Thereby, the hydraulic motor (not shown) in the underground excavator is driven by 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 provided at the upper left end of the underground excavator 64.
0 is attached and the wire 80 is a roller 82A,
82B. The rollers 82A and 82B are rotatably supported by a support member of the left reel 76. The other end of the wire 80 is attached to the crawler crane main body 52. By arranging the wire 80 along the hydraulic hose 14 in this manner, a load is prevented from acting on the hydraulic hose 14.

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

A wire 8 is provided at the upper right end of the underground excavator 64.
8, one end of the wire 88 is attached, and the wire 88 is a roller 90A,
90B. The rollers 90A and 90B are rotatably supported by a support member of the right reel 24. The other end of the wire 88 is attached to the crawler crane main body 52. By arranging the wire 88 along the drainage hose 84 in this way, a load is prevented from acting on the drainage hose 84. In addition, 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 a left pulley 92, and the right reel 86 is rotatably supported by a right pulley 94. The left moving pulley 92 and the right moving pulley 94 are respectively hung on a moving pulley wire 96.
In addition, the moving pulley wire 96 includes fixed pulleys 98A, 98B, 9
8C and 98D, the left end of which is attached to the crawler crane main body 52.

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

The operation of the above-structured suspension apparatus for an underground excavator hose or the like according to the present invention will be described.
Assuming that the weights of the hydraulic hose 72 and the drainage hose 84 attached to the underground excavator 64 are W ₁ and W ₂ , respectively, the weights W ₁ and W ₂ are different, so that the tensile force F ₂ of the wire 80 and the weight of the wire 88 are different. and the tensile force F ₃ is different. However, the tensile Since the force F ₂ and the tensile force F ₃ very small compared to the weight W of the underground excavator 64, or fitted with a light weight weight, the wire 80 and the wire 88 of the center of gravity of the underground excavator 64 By being mounted in the vicinity, the relationship of the following equations (1) and (2) is established.

Load acting on left moving pulley 92: 2F = W ₁ + 2F ₂ (1) Load acting on right moving pulley 94: 2F = W ₂ + 2F ₃ (2) In this case, left moving pulley 92 and 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 excavating a slot in the ground with the underground excavator 64, the underground excavator 64 is lowered by operating the hoist 66 and sending out the suspension wire 58. Thus, the tensile force F ₂ of the wire 80 and the tensile force F _{3 of the} wire 88
Becomes larger, and the relationship between Expressions (1) and (2) becomes Expression (3).
Changes to 2F <W ₁ + 2F ₂ = W ₂ + 2F ₃ (3) Therefore, the hoist 10 is set in accordance with the descending amount of the underground excavator 64.
0, the pulley wire 96 is sent out and the left pulley 9 is moved.
The second and right moving pulleys 94 respectively descend by the same amount. As a result, the left reel 76 and the right reel 86 are respectively lowered by the same amount, and the hydraulic hose 72 and the mud discharging hose 84 are sent out following the lowered amount of the underground excavator 64.
Thus, a 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 completion of the excavation of the slot, the underground excavator 6 is operated by operating the hoist 66 and pulling the suspension wire 58.
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, the hoist 10 is changed according to the amount of rise of the underground excavator 64.
0, the pulley wire 96 is pulled in, and the left pulley 92
And the right moving pulley 94 rises 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 according to the rising amount of the underground excavator 64.

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

In the above-described embodiment, the case where the driving hydraulic hose 72 and the drainage hose 84 are delivered and retracted by the suspension device such as the underground excavator hose according to the present invention is described. When the underground excavator is electrically driven, it can be used for sending and retracting wiring cables, and a hydraulic hose for supplying hydraulic pressure used for operating an adjustable guide provided on the underground excavator. Send out,
It can also be used for retraction.

[0026]

As described above, according to the suspension apparatus for an underground excavator hose or the like according to the present invention, a pair of moving pulleys are arranged at positions substantially symmetric about the suspension wire. In this state, a pair of moving pulleys was hung on a moving pulley wire. The moving pulley wire is connected to one hoist so as to be rewindable and rewindable, whereby the moving pulley wire supports the pair of moving pulleys with the same load. Then, the pair of moving pulleys is raised and lowered simultaneously by winding and rewinding the moving pulley wire with the 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 sent out and retracted.

As described above, the moving pulley wire supports a pair of moving pulleys arranged at positions symmetrical about the suspension wire with the same load by operating one hoist.
A uniform load acts on the substantially symmetrical position about the suspension wire. Therefore, the worker does not need to adjust the two hoists unlike the related art, so that the burden on the worker can be reduced.

In addition, even if the hoist breaks down or the hoist is operated erroneously by using one hoist, the suspended load of the pair of moving pulleys is always kept equal. Can be prevented. Further, since an unbalanced load can be prevented from being applied to the crane boom, it is not necessary to use a crane boom having an excessively high strength.

[Brief description of the drawings]

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

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

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

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

FIG. 7 is a front view of a conventional suspension device for an underground excavator hose or the like.

[Explanation of symbols]

 54 Crane boom 58 Hanging wire 64 Underground excavator 70 Suspension device such as underground excavator hose 72 Hydraulic hose 76, 86 Reel 84 Drainage hose 92 94 94 Moving pulley 96 Moving Pulley wire 100 ... Hoist

Claims (2)

(57) [Claims] 1. An underground excavator that is hung on a suspension wire and excavates underground by rotating a cutter at a tip end thereof, and a pair of hose members and the like hung on a pair of reel members, respectively. In a suspension device such as a hose for an underground excavator to be sent out or retracted following the up-and-down operation of the underground excavator, a pair of moving pulleys arranged at positions substantially symmetric about the suspending wire. Each of the pair of reel members is supported, the pair of moving pulleys is hung on a moving pulley wire, and the moving pulley wire is connected to a single hoist so as to be rewindable and rewindable. A suspension device for an underground excavator hose or the like, wherein the pair of moving pulleys is raised and lowered simultaneously by winding and rewinding a pulley wire. 2. A suspension device for an underground excavator hose or the like according to claim 1, wherein said pair of movable pulleys is provided on a crane boom.