JPH11229799A - Traveling type gondola - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a worker's access to a shaft or the transportation of materials into the shaft by installing a winch on a boom connected to the body of a self-traveling work machine, and liftably supporting a gondola body via a wire rope wound and delivered from the winch. SOLUTION: A lifting device 14 with a winch 12 is mounted on the forward end of a boom 8 connected to a crawler type travel body 1, and a gondola body 10 is liftably supported via a wire rope 11. When the boom 8 is elevated, the lifting device 14 can be lifted up to height where the gondola body 10 comes above the ground. When the boom 8 contracts, the lifting device 14 comes lower and limitation height for a transport on a trailer can be cleared. Also, the gondola body 10 can be used as a worker's elevator means in a shaft and can be as well used as a material delivery means. In addition, a work machine body is self-traveling type and can be used for a plurality of shafts in common, thereby eliminating the need of space for the installation of the gondola body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, mounting a worker on a gondola body or putting in materials for protection of a vertical well in a mountainous area, a vertical hole in a deep foundation work, or a wall surface work in an underground work. Mobile gondola used for the purpose of.

[0002]

2. Description of the Related Art On a slope of a mountain where a mountain collapse is likely to occur,
Dig a vertical hole from the ground to the bedrock, put an arc-shaped plate on the hole wall, attach a drainage pipe on the mountain side of the hole to collect rainwater flowing down the underground rock in the hole, and install a hole on the valley side of the hole. Construction will be carried out to install drainage pipes that allow the water collected at the bottom of the to drain to the ground. Conventionally, when constructing an arc-shaped panel on the hole wall for such a catchment well or foundation pile, a ladder is generally installed in the vertical hole, and the worker goes up and down the hole along the ladder, and the material is It was carried into the hole using a crane.

As another conventional example, a fixed type gondola is installed to carry in and carry out workers and materials, or an elevator is used.

[0004]

However, when going up and down by the ladder, it takes labor to go up and down, and in the case of drainage wells and foundation pile construction, materials such as arc-shaped panels or reinforcing bars suspended by cranes. It is necessary for a worker to perform the mounting work in the hole, and there is a problem that the worker in the hole also requires a great deal of labor.

[0005] In the case of a fixed type gondola, it is difficult to move on site, and a gondola is required in each hole.
In addition to the cost, the gondola is of a fixed type, so that it is necessary to secure a space for installing the elevating device, so that the working space is limited and the working efficiency is poor.

In the case of an elevator, workers and materials can be put in, but it cannot be used as a work floor.
There was a problem that work in the middle of the underground such as protection of a hole wall could not be performed.

SUMMARY OF THE INVENTION In view of the above problems, the present invention makes it easy for a worker to enter a hole, facilitates the transfer of materials, and is movable, so that a plurality of holes can be moved. It is an object of the present invention to provide a mobile gondola that can be shared by one machine and that achieves economy.

[0008]

Means for Solving the Problems The invention of claim 1 is a mobile gondola used for boarding workers and charging materials in underground work and deep foundation work, wherein a boom is attached to a self-propelled work machine body, A winch is mounted on the boom, and the gondola main body is supported so as to be able to move up and down via a wire rope wound and fed by the winch.

According to the first aspect of the present invention, the gondola can be used as a work floor by moving the gondola and inserting the gondola into the plurality of holes in order, so that the gondola can be used. Can be used as a material carrying means. Further, since the gondola elevating device is installed on the boom attached to the work machine, there is no need to secure a space for installing the gondola elevating device.

[0010] Further, according to the invention of claim 2, the working machine main body is provided with a revolving body on a traveling body via a revolving device,
The boom is attached to the revolving structure by a hydraulic cylinder so as to be able to move up and down.

According to the second aspect of the present invention, since the working machine body has the turning device, the turning device is operated with the gondola body pulled up, so that the gondola and the elevating device can be moved even when the traveling device is not operated much. The device can be moved onto another hole. In addition, since the boom is of an up-and-down type, the transport limit height can be cleared by transporting the trailer in a prone state when transporting the trailer.

A third aspect of the present invention is characterized in that there is provided a means for fixing the hydraulic cylinder in an extended state of the hydraulic cylinder with the boom upright.

According to the configuration of claim 3, since the hydraulic cylinder for raising and lowering the boom is prevented from contracting in the extended state,
The boom and the gondola body are prevented from lowering due to the contraction of the hydraulic cylinder.

The invention according to a fourth aspect is characterized in that an operating device for raising and lowering the gondola main body is provided on the boom and the gondola main body.

According to the fourth aspect of the present invention, even if the operating device on the main body of the gondola breaks down, the gondola can be operated by the operating device on the hanging device.

According to a fifth aspect of the present invention, there is provided a lock device for stopping the operation of the work machine main body while the gondola main body is being moved up and down.

According to the fifth aspect of the present invention, while the gondola body is being moved up and down, traveling and turning of the work machine body are prohibited.
Safety is improved.

The invention according to claim 6 is characterized in that a generator serving as a power supply for driving the winch is mounted on the work machine main body.

According to the configuration of claim 6, the winch is driven by the generator mounted on the working machine main body, and a general electric winch can be used for the lifting device.

The invention according to claim 7 is characterized in that the boom is provided with stairs and handrails for workers to go up and down.

According to the configuration of claim 7, it is possible to easily move up and down through the boom to the operation device of the elevating device at the top of the boom.

[0022]

FIG. 1 is a sectional view showing a working state of a movable gondola according to an embodiment of the present invention, FIG. 2 is a front view of the movable gondola, and FIG. 3 is a plan view of the movable gondola. It is. 1 to 3, reference numeral 1 denotes a crawler-type traveling body, 2 denotes a revolving body installed on the traveling body 1 via a revolving device 3, and a driver's cab 5 and an engine Power unit 6 for driving the hydraulic pump,
A generator 7 for generating electric power as a power supply for raising and lowering the gondola by an engine is mounted, and a boom 8 is mounted so as to be raised and lowered by expansion and contraction of a hydraulic cylinder 9.
As shown by the solid line in FIG. 1, when the boom 8 is raised, the suspension device 14 is raised to a height where the gondola main body 10 is above the ground. In addition, when the boom 8 is contracted, the hanging device 14 can be lowered as shown by the two-dot chain line, and the height limit can be easily cleared when transporting the trailer.

At the tip of the boom 8, the gondola body 1
A hoisting device 14 provided with three winches 12 for supporting and raising / lowering the wire 0 via a wire rope 11 is mounted. The suspension device 14 has the three winches 12 mounted on a floor 15 attached to the end of the boom 8, and has a handrail 17 for preventing a worker from falling down and an operating device 18 for the winch 12.

On the other hand, the gondola main body 10 is provided with a floor material 21 on which an operator 19 rides and mounts a material, and a handrail 22 for preventing the operator and the material from falling. The gondola body 1
0 is set to a size that can be inserted into a vertical hole 24 such as a drainage well or a foundation pile hole for a deep foundation. An operation device 25 for remotely controlling the winch 12 via a cable (not shown) is also provided on the gondola body 10.

As shown in the side view of FIG. 4A, a ladder 26 and a handrail 27 are attached to the boom 8 so that an operator can easily go up and down the hanging device 14.

FIG. 4A is a side view and FIG.
As shown in the cross-sectional view of FIG. 7, when the hydraulic cylinder 9 is extended and the boom 8 is raised, the hydraulic cylinder 9 has a fixing means for preventing oil in the hydraulic cylinder 9 from leaking and contracting.
The fixing means 30 of this example is provided with a boss 29 at the tip of the rod 9a.
And mechanically prevents the hydraulic cylinder 9 from contracting and prevents the boom 8 and the gondola body 10 from lowering. The fixing means 30
Is formed by pivotally connecting one side of the two half-split members 31 and 31 with a pin 32, surrounding the rod 9a of the hydraulic cylinder 9, and connecting the other side with a fastener 33 such as a bolt or a nut. It is fixed to the rod 9a.

FIG. 5 shows the arrangement of the switches of the operating devices 18 and 25 and the structure related to the devices on the revolving superstructure 2. As shown in FIG. 5, the operating devices 18 on the hanging device 14 include operating switches PB-1 and PB for operating the three winches 12 in conjunction with the upward and downward directions of the gondola body 10, respectively.
B-2. 1 to No. 3 operating switches PB-3, PB-4 to PB-7 to PB- for operating the respective winches 12 in the upward and downward directions of the gondola body 10, respectively.
8 is provided. In addition, the gondola main body 10 is
Are connected to limit switches LS-1 to LS-3 for overwinding prevention, which operate when the ascending is approached.

On the other hand, the operating device 25 on the gondola body 10 side
Is a power switch S-1, a changeover switch S-2 operated when the operation device 25 is used, and three winches 1
Operation switches PB-9 and PB-10, which are pendant switches for operating the gondola body 10 in the directions of raising and lowering the gondola body 10 with one touch, and the gondola body 1
No. 0 to maintain the horizontal posture. 1 to No. Operation switches PB-11 to PB-13 for individually operating the third winch in the direction in which the gondola main body 10 is lifted are provided.

FIG. 6 shows a power supply circuit for the three winches 12, M1 to M3 denote drive motors for each winch 12,
CN-1 to CN-4 are connectors, ELB is an overcurrent breaker, TS is a rotation direction setting device, MC-1F and MC-1R,
The MC-2F and MC-2R, and the MC-3F and MC-3R respectively rotate the motors M1, M2, and M3 forward (the gondola body 1).
The switch is a switch for reverse rotation (downward movement of the gondola main body 10) and a contact point of a relay of a corresponding symbol described later.

FIG. 7 is an electric circuit of the operation device 18, and FIG.
9 is an electric circuit of the operating device 25 on the gondola main body 10, FIG.
Are related circuits. In FIG. 7, the limit switches LS-1 to LS-3 are connected in series with each other and are connected in series with a relay RC.

In FIG. 7, S-3 is closed when the changeover switch S-2 (see FIG. 8) of the operating device 25 on the gondola body 10 is off (open) and on (closed), respectively. It is a power switch that makes use of the operation of only one of the operation devices 18 and 25 in conjunction with being opened.
PB-1 to PB-8 are operation switches described with reference to FIG. REN-U and REN-D are each PB
-1 and PB-2 are relays for interlocking up and down which are excited when PB-2 is operated. The relays have contacts indicated by the same reference numerals in FIG. 9 and the operation switch PB-1 (PB-2) is operated. Then, the relay REN-U (REN-D) is excited,
Thereby, the three contacts REN-U (RE
ND) is closed, and the relays MC-1F to MC-
3F (MC-1R to MC-3R) are excited. In FIG. 6, the contacts MC-1F to MC-3F (MC-1R to MC-3R) are excited.
-R) is closed, which results in three winch motors M1
To M3 are the ascending direction (downward direction) of the gondola body 10
And the gondola body 10 moves up (down).

PB-3 to PB-8 are operation switches for operating the individual winches 12 shown in FIG. 5 in the upward and downward directions, and include 1UP, 1DN to 3UP, and 3D
N is a relay that is excited by operating each of the operation switches PB-3 to PB-8. When these relays are excited, the corresponding contacts 1UP,
1DN to 3UP, 3DN are excited, and the relay MC-
1F to MC-3F and MC-1R to MC-3R are excited, and the contacts MC-1F to MC-3 shown in FIG.
F, the corresponding one of MC-1R to MC-3R is closed, and one of the motors M1 to M3 operates in the upward or downward direction of the gondola body 10.

In the operating device 25 on the gondola main body 10 shown in FIG. 8, the PB-9 and PB-10 operate the three winches 12 in the upward and downward directions in conjunction with each other, as described with reference to FIG. Operation switch, PB
Reference numerals -11 to PB-13 denote operation switches for operating the motors M1 to M3 in the ascending direction, respectively, and are respectively connected to the circuits shown in FIG. 7 to operate the circuits shown in FIGS. .

As described above, since the operating devices 18 and 25 are provided on both the hanging device 14 and the gondola main body 10, even if the operating device 25 on the gondola main body 10 breaks down, the hanging device is provided. By operating the operating device 18 on the 14, the gondola main body 10 can be raised and lowered.

FIG. 10 shows a hydraulic circuit of this movable gondola, where 40 is an engine, 41 and 42 are main hydraulic pumps,
3 is a pilot hydraulic pump, 44 is a hydraulic motor of the swing device 3, 9 is a hydraulic cylinder for raising and lowering the boom, 46 and 47 are hydraulic motors for traveling on the left and right of the traveling body 1, 50, 51, 52,
53 is a control valve for the hydraulic motor 44, the hydraulic cylinder 9, the hydraulic motors 46 and 47, 55, 56, 5 respectively.
7, 58 are control valves 50, 51, 52, respectively.
53 is a pilot valve.

Reference numeral 60 denotes a lock valve inserted between the pilot hydraulic pump 43 and the pilot valves 55 to 58. The lock valve 60 is manually turned off by an operator to turn off the pilot valves 55 to 58. The operation can be prohibited, and the operation of each actuator 44, 9, 46, 47 can be prohibited.

Reference numeral 61 denotes an interlock valve provided to inhibit the operation of the main body during the operation of the gondola. The interlock valve 61 is connected in series with the lock valve 60, and as shown in FIG. By adding a signal 62 indicating that the operating devices 18 and 25 are operating, the pilot oil from the pilot hydraulic pump 43 to the pilot valves 55 to 58 is shut off, and the actuators 44 and 25 are turned off.
The operation of 9, 46 and 47 is automatically prohibited.
By providing such an interlock valve 61,
Safety is improved.

[0038]

According to the first aspect of the present invention, a boom is attached to the self-propelled working machine main body, a winch is mounted on the boom, and the gondola main body can be raised and lowered via a wire rope wound and fed by the winch. Since the gondolas are supported, the gondola main body can be used as a means for elevating and lowering in the hole of the worker, and can also be used as a work floor, so that work can be performed more easily as compared with a conventional ladder. Also,
A gondola can be used as a means for bringing in materials.

Further, unlike the conventional fixed type gondola, it is not necessary to install a gondola in each hole, and by inserting the gondola body in a plurality of holes in order, the plurality of holes can be used as well. Economy is achieved, and there is no need to secure space for installing a gondola lifting device.

According to the second aspect of the present invention, since the revolving unit is provided on the traveling body via the revolving device, the position of the gondola main body can be changed by the revolving operation without running the revolving unit. It can be adjusted and workability is improved. In addition, since the boom is attached to the revolving body by a hydraulic cylinder so that the boom can be raised and lowered, the transport limit height can be easily cleared by transporting the boom in a prone state when transporting the trailer.

According to the third aspect, since the hydraulic cylinder having the boom raised is provided with the means for fixing the hydraulic cylinder in the extended state, the hydraulic cylinder for raising and lowering the boom is prevented from contracting in the extended state. The boom and gondola are prevented from lowering due to contraction of the hydraulic cylinder.

According to the fourth aspect, the operating device for raising and lowering the gondola main body is provided on the boom and the gondola main body. The gondola can be operated by the operating device of.

According to the fifth aspect, since the lock device for stopping the operation of the work machine body while the gondola body is being moved up and down is provided, the traveling of the work machine body can be performed while the gondola body is being moved up and down.
Since the operation such as turning is prohibited, safety is improved.

According to the sixth aspect of the present invention, since the power generator for driving the winch is mounted on the working machine body,
The winch is driven by the generator mounted on the work machine body, so that a general electric winch can be used for the lifting device, and the hydraulic power unit of the work machine body can be used for raising and lowering the gondola body with relatively small output. Need not be operated, and energy saving can be achieved.

According to the seventh aspect of the present invention, the boom is provided with stairs and handrails for raising and lowering the worker, so that it is possible to easily ascend and descend through the boom to the hanging device at the top of the boom. improves.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a working state according to an embodiment of a movable gondola according to the present invention.

FIG. 2 is a front view of the movable gondola of FIG.

FIG. 3 is a plan view of the movable gondola of FIG. 1;

FIG. 4A is a side view of the boom of the present embodiment,
(B) is a cross-sectional view showing the fixing means of the hydraulic cylinder for raising and lowering the boom.

FIG. 5 is a diagram showing an example of an arrangement of operation switches on an operation device and a configuration related to devices on a revolving superstructure in the present embodiment.

FIG. 6 is an electric circuit diagram of a winch power supply circuit according to the present embodiment.

FIG. 7 is an electric circuit diagram of an operating device on the hanging device according to the present embodiment.

FIG. 8 is an electric circuit of the operating device on the gondola body of the present embodiment.

FIG. 9 is an electric circuit diagram showing a related circuit of FIGS. 6 to 8;

FIG. 10 is a configuration diagram illustrating an example of a hydraulic circuit according to the present embodiment.

[Explanation of symbols]

1: traveling body, 2: revolving body, 3: revolving device, 6: power unit, 7: generator, 8: boom, 9: hydraulic cylinder,
10: Gondola body, 11: Wire rope, 12: Winch, 14: Suspension device, 18: Operation device, 21: Floor plate,
24: vertical hole, 25: operating device, 26: ladder, 27: handrail, 30: fixing means, 36 quick joint, 40:
Engine, 41, 42: hydraulic pump, 43: pilot hydraulic pump, 44: hydraulic motor for turning, 46, 47: hydraulic motor for traveling, 50 to 53: control valve, 55 to 55
58: pilot valve, 60: lock valve, 61: interlock valve

 ──────────────────────────────────────────────────の Continued on the front page (72) Yoshimi Shiba 650, Kandamachi, Tsuchiura City, Ibaraki Prefecture Inside Hitachi Construction Machinery Engineering Co., Ltd. (72) Kentaro Hashimoto 650, Kandamachi, Tsuchiura City, Ibaraki Prefecture Hitachi Construction Machinery Co., Ltd. Tsuchiura factory

Claims (7)

[Claims] Claims 1. A mobile gondola used for boarding and loading materials in underground work and deep foundation work, wherein a boom is mounted on a self-propelled work machine body, a winch is mounted on the boom, and the winch is A movable gondola, wherein the gondola body is supported so as to be able to move up and down via a wire rope which is wound and fed. 2. The work machine body according to claim 1, wherein the work machine main body is provided with a revolving body on a traveling body via a revolving device, and the boom is mounted on the revolving body by a hydraulic cylinder so as to be able to move up and down. Mobile gondola featured. 3. The movable gondola according to claim 2, further comprising means for fixing the hydraulic cylinder when the hydraulic cylinder with the boom upright is extended. 4. The movable gondola according to claim 1, further comprising an operation device for moving the gondola body up and down on the boom and the gondola body. 5. The movable gondola according to claim 1, further comprising a lock device for stopping the operation of the work machine main body while the gondola main body moves up and down. 6. The movable gondola according to claim 1, wherein a generator serving as a power supply for driving the winch is mounted on the working machine main body. 7. The movable gondola according to claim 1, wherein the boom is provided with a stair and a handrail for a worker to go up and down.