JPH1088959A - Method and device for conveying out soil excavated from vertical shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance operating efficiency and safety by enabling vertical movement inside a vertical shaft and horizontal movement on the ground outside the shaft to be continuously carried out while supporting a sludge bucket in a stable position. SOLUTION: A horizontal leader 22 which orthogonally intersects a vertical leader 21 hanging down into a vertical shaft 50 is provided above a pit mouth. Using a catcher device 1 to which a vertical running part 1A and a horizontal running part 1B are freely removably attached, rice and fall along the vertical leader 21 is effected while the vertical running part 1A is coupled with the horizontal running part 18. At the bottom of the vertical shaft 50, the soil excavated is loaded into a sludge bucket 2 suspended and supported from the horizontal running part 1B, and after the bucket is raised to the pit mouth, the horizontal running part 1B is separated so that only the horizontal running part 1B is slid along the horizontal leader 22. Meanwhile the sludge bucket 2, without loading and unloading the soil or changing the load, is continuously moved to a soil conveying position where a soil carrying vehicle 31 is waiting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of unloading shaft excavated soil by mechanization and a vertical and horizontal continuous unloading device used for unloading work, and can be used, for example, for constructing a deep foundation pile.

[0002]

2. Description of the Related Art Conventionally, the most common method of unloading shaft shaft excavated soil is a method of unloading mainly using a winch mounted on a tower at an overground wellhead and human power. The work is performed in the following procedure. .

At the bottom of a shaft during excavation work, excavated soil is loaded into an unloading bucket by a small backhoe or a manpower that has been carried in advance.

[0004] An operator at the bottom of the pit confirms whether there is excessive loading of excavated soil in the discharging bucket, and sends a signal to a winch staff at the aboveground wellhead. Upon receiving the signal, the winch staff lifted the unloading bucket about 30 cm from the bottom of the pit,
Stop.

[0005] In order to maintain the verticality of the hoisting wire, rolling occurs in the bucket for discharging the soil, but a worker at the bottom of the pit stops the rolling of the bucket for discharging the soil by human power and gives a signal to the person in charge of the winch. And then evacuate to a safe location at the bottom of the mine.

[0006] By lifting the winch, the discharging bucket is lifted from the pit bottom to the pit. Winch personnel,
Operate the winch by manual operation so that there is no danger of the dumping bucket rolling or the load falling. In the meantime, the downhole worker stops working and waits under a guard facility for preventing falling objects.

The person in charge of the winch stops the earth discharging bucket at a predetermined position on the ground, and lowers it on the work table while pulling it laterally by human power.

[0008] The dumping bucket is turned over on a work table, and the excavated soil is loaded on a belt conveyor and carried out to a dump truck.

The person in charge of the winch returns the emptied earth discharging bucket from the workbench to the wellhead, sends a waiting signal to the worker at the bottom of the pit, and lowers the earth discharging bucket.

Further, as a more mechanized carrying-out method, there is a method in which a portal crane capable of horizontally moving a winch body is installed in a tower at an above-ground wellhead, and the above-mentioned equipment is used to mechanize the above operations. .

[0011] In this case, as equipment for lifting and lowering the discharging bucket, a vertical leader is installed from the pit to the bottom of the shaft according to the length of the shaft, and the discharging bucket is moved up and down along the vertical leader. Suppress the rolling of the soil bucket,
We are working to ensure safety. However, since the vertical leader is cut at the end of the pit bottom and the wellhead, it is necessary to manually remove and attach the earth discharging bucket at the upper and lower ends of the vertical leader.

[0012]

In any of the conventional methods, when the earth removal bucket is attached to or detached from the bottom of the well, a worker at the bottom of the well interrupts the excavation work to position or remove the earth removal bucket. In addition, while the discharging bucket is located at the bottom of the pit, the work area for excavation is reduced, so that it is difficult to improve the efficiency of excavation work.

In the conventional method relying on winches and human power,
When the bucket is lifted and lowered, the suspension length becomes very long, which may cause horizontal shaking and risk of contact with the pit wall. In the meantime, workers at the bottom of the pit need to work up and down with the dumping bucket located overhead, which is extremely dangerous and requires evacuating under a guard to prevent falling objects. There are many issues both in terms of safety and safety.

On the other hand, in the case where a vertical leader is provided on the pit wall to prevent the roll, the installation work of the vertical leader becomes a burden in the process. In addition, the work efficiency has to be increased because the vertical leader needs to be extended in the mine as the excavation progresses, and at the upper and lower ends of the vertical leader, human power assisting work for attaching and detaching the unloading bucket to and from the vertical leader occurs. Difficult to improve.

In addition to the vertical movement in the shaft,
As ground work, it is usually necessary to move horizontally to a carry-out position (loading position on a dump truck or the like) about 5 to 10 m away from the wellhead. However, since there is no equipment for continuous vertical movement and horizontal movement, Poor work efficiency. In particular, the dumping bucket is likely to roll when exiting the pit from the pit, and is manually stopped.However, operations such as loading and unloading near the pit and reloading are performed by workers and cargo. There is a problem that the danger of falling is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and stably supports a discharging bucket.
It is an object of the present invention to provide a method and an apparatus for unloading shaft excavated soil excellent in work efficiency and safety in which vertical movement in a shaft and horizontal movement in an overground area can be continuously performed.

[0017]

According to a first aspect of the present invention, there is provided a method of unloading a shaft shaft excavated soil, comprising suspending a vertical traveling portion and a horizontal traveling portion in a detachable manner under a horizontal traveling portion of a catcher device. Using an excavated soil unloading device that suspends and supports an unloading bucket via a material, and slides the vertical traveling unit along a vertical leader that is suspended from the wellhead into the shaft by the excavated soil unloading device. And loading the earth and sand excavated at the bottom of the shaft into the discharging bucket, sliding the vertical traveling portion along the vertical leader to ascend to the wellhead, and the vertical leader being a wellhead. At a position orthogonal to the horizontal leader installed above, separate the horizontal traveling part of the catcher device from the vertical traveling part and move it horizontally along the horizontal leader to the earth and sand unloading position. Loading and unloading excavated earth and sand in the dumping bucket, returning the horizontal traveling section along a horizontal leader to a position orthogonal to the vertical leader while suspending and supporting an empty dumping bucket; The step of combining with the part is repeated a required number of times.

According to the present invention, in the state where the discharging bucket is stably supported by the catcher device with a short suspension length, the vertical movement in the shaft and the horizontal movement in the ground portion are performed. Can be performed continuously.

Although the suspending member can be provided directly on the catcher device, usually, a winch wire or the like installed on a tower of a wellhead is used as a suspending member, and a guide portion provided on a horizontal traveling portion of the catcher device is used. By suspending and supporting the bucket for earth discharging via the intermediary, the substantial suspension length can be shortened and stabilized.

The catcher device is a combination of a vertical traveling section and a horizontal traveling section detachably attached to each other. The vertical traveling section and the horizontal traveling section are separated (at the time of carrying out earth and sand) at the orthogonal position of the vertical leader and the horizontal leader, or combined (at the time of hanging down into a pit). ) Enables continuous unloading of earth and sand without transshipment.

[0021] Claim 2 of the present application limits the method of lifting and lowering the vertical leader suspended in the shaft and the method of extending the vertical leader in the vertical shaft in Claim 1, and a rack gear is provided in the longitudinal direction of the vertical leader. By driving the pinion gear provided in the tower of the shaft of the shaft to engage with this, the vertical leader moves up and down the shaft, and the vertical leader is added in the longitudinal direction. Can be adjusted.

Therefore, the troublesome connection work of the vertical leader at the bottom of the pit becomes unnecessary, and the reduction of the excavation work efficiency due to the interruption of the work and the reduction of the work space can be prevented.

The excavated soil carrying device according to claim 3 of the present application comprises:
An apparatus for use in the unloading method according to claim 1,
A vertical leader suspended from the wellhead into the shaft, a horizontal leader perpendicular to the vertical leader above the wellhead, a vertical traveling part slidable along the vertical leader, and a horizontal slidable along the horizontal leader It is characterized by comprising a catcher device which is detachably combined with a traveling portion, and an earth discharging bucket suspended from a horizontal traveling portion of the catcher device via a suspending member.

[0024] With such a configuration, continuous work in the vertical and horizontal directions is possible with respect to the removal of excavated soil, the bucket for discharging soil can be stably supported, and work efficiency and safety can be improved. Improvement can be achieved.

According to a fourth aspect of the present invention, in the device according to the third aspect, a winch is disposed above the horizontal traveling portion of the catcher device, and a guide portion is provided on the horizontal traveling portion by a wire for the winch with a wire of the winch. In this case, the case where the projector is suspended and supported via is limited.

According to a fifth aspect of the present invention, in the device according to the third or fourth aspect, the horizontal leader can be opened and closed left and right at least at a position orthogonal to the vertical leader so as to sandwich the horizontal traveling portion of the catcher device. In a state where the horizontal leader is closed and the horizontal rail provided on the horizontal leader is engaged with the horizontal traveling portion of the catcher device, the horizontal traveling portion is slidable along the horizontal rail. It is.

Usually, the horizontal leader may be opened on the side orthogonal to the vertical reader, but may be opened and closed in parallel as a whole. In the closed state, the horizontal rail of the horizontal leader engages with the horizontal traveling section of the catcher device, so that the horizontal traveling section that suspends and supports the discharging bucket can slide in the horizontal direction, and cannot slide in the open state. It has become.

According to a sixth aspect of the present invention, in the device of the fifth aspect, the vertical traveling portion and the horizontal traveling portion of the catcher device are detachable from each other by engaging means, and the horizontal leader moves when the horizontal leader is closed. Thus, the present invention is limited to the case in which a part thereof presses the disengagement means of the engaging means, and the pressing force releases the engagement between the vertical traveling part and the horizontal traveling part.

With this configuration, the vertical traveling portion and the horizontal traveling portion of the catcher device can be automatically separated from each other or further combined without human power. Eliminating work at dangerous wellheads leads to improved safety.

The vertical and horizontal continuous unloading device according to claim 7 provides a more general unloading device as an unloading device usable in the unloading method according to claim 1, and slides along a vertical leader. A catcher device comprising a detachable vertical travel portion and a horizontal travel portion slidable along a horizontal leader perpendicular to the vertical leader, and a catcher device suspended from the horizontal travel portion of the catcher device via a hanging member. And a supported bucket.

This apparatus can be used not only for carrying out excavated soil, but also for carrying out objects inside and outside a shaft in the construction of a deep foundation pile, and also for other purposes. It can be performed efficiently.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show, as a preferred embodiment of the present invention, equipment / apparatus configurations when the present invention is used for carrying out excavated earth and sand in deep foundation pile construction. .

FIG. 1 shows an outline of the whole method of unloading excavated soil. A vertical leader 21 is suspended in a vertical shaft 50 from a turret 30 constructed as a part of an excavation facility at an aboveground wellhead, and a position above the wellhead is located. The horizontal reader 22 is provided orthogonal to the vertical reader 21. In the present invention, along the vertical leader 21 and the horizontal leader 22, the vertical traveling unit 1A
The catcher device 1 which makes the horizontal traveling section 1B and the horizontal traveling section 1B detachable is slid.

As a whole equipment, a horizontal moving space for the discharging bucket 2 and a hydraulic unit are provided mainly on the first floor portion.
Winch equipment, vertical leader assembling work platform on the second floor,
Crane, gondola equipment, etc. will be provided.

The vertical movement along the vertical leader 21 is performed in a state where the vertical traveling section 1A and the horizontal traveling section 1B of the catcher device 1 are combined, and the earth and sand excavated at the bottom of the shaft 50 is used for the horizontal traveling section of the catcher device 1. It is loaded on the earth discharging bucket 2 suspended from 1B and raised to the wellhead. Then, the vertical leader 21 and the horizontal leader 22 at the top of the wellhead
At the intersection of the horizontal travel part 1B of the catcher device 1 is separated, and only the horizontal travel part 1B is slid along the horizontal leader 22 except for the vertical travel part 1A.

During this time, the earth discharging bucket 2 can be continuously moved to the earth and sand unloading position where the earth moving vehicle 31 such as a dump truck stands by without loading and unloading the earth and reloading.

In this example, the wire discharging wire 3a of the winch 3 provided on the second floor of the tower 30 suspends and supports the discharging bucket 2 with the horizontal running portion 1B of the catcher device 1 serving as a guide. The suspension length is the distance from the guide section of the horizontal traveling section 1B to the suspension point of the earth discharging bucket 2, and stable support with almost no shaking is possible.

The winch 3 can be moved in the horizontal direction on the tower 30 together with the horizontal traveling section 1B of the catcher device 1. However, the winch 3 is fixed, and the horizontal traveling section 1B of the catcher device 1 is horizontally moved independently. In this case, as in the case of the movement in the vertical direction, it is possible to maintain the suspension height by feeding and winding the wire 3a.

The return of the empty discharging bucket 2 after the earth and sand is loaded on the soil carrying vehicle 31 is performed in the reverse order by the horizontal traveling unit 1B.
Is moved horizontally, and united with the vertical traveling section 1A at the wellhead, and the vertical traveling section 1A is fed while sending out the wire 3a of the winch 3.
Slides along the vertical leader 21 to return the earth discharging bucket 2 to the earth and sand loading position at the bottom of the pit.

In this example, a plurality of vertical leaders 21 each having a length of about 4 m are extended, and can be extended and removed on the tower 30. Further, rack gears (not shown) are provided on the left and right surfaces of the vertical leader 21 for the purpose of lifting and lowering, and the entire vertical leader 21 can be raised and lowered by a power device that drives a pinion gear 23 provided on the upper stage of the tower 30. .

As a measure for preventing the vertical leader 21 from rolling, there is a means such as installing a rolling prevention guide on a pit wall every 10 m, for example, as required.

FIG. 2 shows the positional relationship between the vertical leader 21 and the catcher device 1 when ascending and descending. The leader pipe 24 protruding from the left and right side surfaces of the vertical leader 21 and the vertical traveling portion 1A side of the catcher device 1 are shown. The catcher device 1 moves up and down along the vertical leader 21 in a state where the guide portion 4 formed of a half-split pipe is engaged and the vertical traveling portion 1A and the horizontal traveling portion 1B are united.

The vertical running portion 1A and the horizontal running portion 1B of the catcher device 1 are formed in such a manner that the convex portion 5 of the vertical running portion 1A fits into the concave portion 6 in the horizontal direction (the contact surface has three curved surfaces close to a conical surface). (A supporting state can be ensured), and are engaged on both left and right side surfaces.

In the figure, reference numeral 7 denotes a stopper for maintaining the engaged state. The stopper 7 protrudes right and left above and below the convex portion 5 of the vertical running portion 1A, for a total of two pairs. I have. The engagement state is maintained by the tip of the stopper 7 penetrating into the engagement grooves 9 on the left and right side walls forming the recess 6 on the side of the horizontal traveling portion 1B, and the engagement state is maintained as described later.
The spring 8 between the upper and lower pressure receiving pins 10 is pressed from both left and right sides via the pressing pins 25 of the horizontal reader 22 (see FIG. 3 (a)), and the spring 8 is pressed and contracted, whereby the engagement state by the stopper 7 is released. It has become so.

The dumping bucket 2 is supported by a winch wire 3a passing through a guide hole 11 provided in a horizontal traveling section 1B of the catcher device 1. The winch 3 feeds and winds the wire 3a. , The catcher device 1 and the discharging bucket 2 supported by the catcher device 1 move up and down.

FIG. 3 shows a vertical reader 21 and a horizontal reader 2.
2 shows the positional relationship between these and the catcher device 1 at orthogonal positions, and the horizontal leader 22 suspended and supported horizontally from the upper stage of the tower 30 and one end guided by the vertical leader 21 opens and closes left and right. When the horizontal leader 22 is closed, the horizontal traveling unit 1B of the catcher device 1 that has moved up and down along the vertical leader 21 is separated from the vertical traveling unit 1A, and only the horizontal traveling unit 1B follows the horizontal leader 22. Can be moved.

The mechanical operation for separating and connecting the catcher device 1 is performed by an opening operation for widening the left-right space of the horizontal reader 22 and a closing operation for narrowing the space.

When the discharging bucket 2 reaches a predetermined height at which horizontal movement on the ground is possible, the vertical leader 21
Is stopped, and then the distance between the left and right horizontal readers 22 orthogonal to the vertical readers 21 is reduced (close operation).
Then, the pressing pin 25 provided inward on the horizontal leader 22 comes into contact with the above-described pressure receiving pin 10, and compresses the spring 8.
By this operation, the stopper 7 is disengaged, and the horizontal traveling portion 1B is separated while leaving the vertical traveling portion 1A, and can be moved in the horizontal direction along the horizontal leader 22.

In this example, horizontal rails 22a are formed on the left and right of the center of the horizontal leader 22 in the height direction, and the guide portions 12 on both sides of the horizontal running portion 1B of the separated catcher device 1 slide along the horizontal rail 22a. It works.

In FIG. 3, reference numeral 26 denotes a hydraulic jack for opening and closing the horizontal leader, and 27 denotes a buffer member.

FIG. 4 shows the positional relationship between the horizontal leader 22 and the catcher device 1 during horizontal movement. Tower 3
When the winch 3 above the first winch 3 is installed so as to be movable in the horizontal direction, the catcher device 1 is moved with the horizontal movement of the winch 3.
The horizontal traveling portion 1B and the earth discharging bucket 2 are horizontally moved in a pulled state.

When the earth discharging bucket 2 reaches a predetermined position where the earth moving vehicle 31 or the like stands by, the earth discharging bucket 2 is turned upside down to discharge the earth, and the empty earth discharging bucket 2 and the catcher device 1 are horizontally moved. Return the traveling section 1B to the wellhead.

When the vertical running portion 1A and the horizontal running portion 1B of the catcher device 1 are brought into a position where they can be engaged, the opening operation of the horizontal leader 22 is performed so that the stopper 7 works and unites.

FIG. 5 shows an example of means for fixing the catcher device 1 to the winch wire 3a when the shaft 50 is moved up and down. In the example shown, the winch wire 3
a is a guide hole 1 of the horizontal traveling portion 1B of the catcher device 1.
1, when the catcher device 1 descends along with the discharging bucket 2 at high speed along the vertical leader 21, the catching device 1 and the discharging bucket 2 have different descending speeds as they are. I will.

In order to prevent this, a wire lock mechanism is added in the catcher device 1 in the example of FIG. That is, the brake pad 13 is pressed against the wire 3a passed through the guide hole 11 of the horizontal traveling portion 1B by using the force of the spring 14, so that a large frictional force is given, and the catcher device 1 and the wire 3a and the wire 3a The earth discharging bucket 2 connected to the tip can be moved up and down at the same time.

During horizontal running, the pressure receiving pin 15 protruding from the side surface of the catcher device 1 is pushed at the time of the closing operation of the horizontal leader 12, and in the closed state, the brake pad 13 is connected to the wire 3a against the pressing force of the spring 14. The lock is released by moving away from.

When the bucket 2 is moved at the bottom of the shaft 50, the lock can be released by operating the operation rod 16 or the like.

[0058]

According to the unloading method of the present invention, the earth discharging bucket can be stably supported with a short suspension length via the catcher device, and the catcher device is connected to the vertical traveling portion. Since the horizontal running unit is detachably combined with the horizontal running unit, continuous separation work can be performed without reloading by separating and combining the vertical and horizontal leaders at orthogonal positions. Further, since the swing of the earth discharging bucket is small, the moving speed can be increased and the working efficiency can be improved.

Since auxiliary work by human power is largely omitted, work efficiency and safety can be improved.

Since most of the work is performed on the ground or on the tower, the work efficiency and safety are superior to the work at the narrow shaft bottom.

According to the invention of claim 2 of the present application,
A rack gear is provided in the longitudinal direction of the vertical leader, and the pinion gear provided in the tower of the shaft of the shaft is driven so as to mesh with the rack gear, so that the vertical leader moves up and down in the shaft and adds the vertical leader in the longitudinal direction. Thus, the length can be adjusted according to the progress of the excavation. Therefore, the troublesome connection work of the vertical leader at the bottom of the pit becomes unnecessary, and the reduction of the excavation work efficiency due to the interruption of the work or the reduction of the work space can be prevented.

According to the excavated soil carrying device according to the third aspect of the present invention, it is possible to carry out excavated soil continuously in the vertical and horizontal directions and stably support the discharging bucket. Thus, work efficiency and safety can be improved.

According to the apparatus of claim 6 of the present application, the separation of the vertical traveling portion and the horizontal traveling portion of the catcher device by utilizing the movement of the horizontal leader when opening and closing the horizontal leader, or further, the union is performed by human power. It can be performed automatically, improving work efficiency, and also improving safety by eliminating the work at the most dangerous wellhead.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an outline of a method for carrying out excavated soil according to the present invention.

FIGS. 2A and 2B show a positional relationship between a vertical leader and a catcher device when the shaft is raised and lowered, wherein FIG. 2A is a plan view and FIG. 2B is a front view.

FIG. 3 shows a positional relationship between a vertical leader and a horizontal leader at orthogonal positions thereof and a catcher device.
(a) is a plan view and (b) is a front view.

4A and 4B show a positional relationship between a horizontal leader and a catcher device during horizontal movement, wherein FIG. 4A is a plan view and FIG. 4B is a front view.

FIG. 5 is a plan view showing an example of a means for fixing the catcher device to the suspension wire when moving up and down the shaft.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Catcher device, 1A ... Vertical running part, 1B ... Horizontal running part, 2 ... Bucket for earth removal, 3 ... Winch, 3a ... Wire, 4 ... Guide part, 5 ... Convex part, 6 ... Concave part, 7 ... Stopper, 8 spring, 9 engagement groove, 10 pressure receiving pin, 11
... guide holes, 12 ... guide parts, 13 ... brake pads,
14 spring, 15 pressure receiving pin, 16 operating rod, 21 vertical leader, 22 horizontal leader, 22a horizontal rail, 23 pinion gear, 24 leader pipe, 25
... Pressing pin, 26 ... Hydraulic jack, 27 ... Buffer, 3
0 ... turret, 31 ... carriage vehicle, 50 ... shaft

Claims (7)

[Claims] An excavated soil unloading device comprising a catcher device having a vertically running portion and a horizontally running portion detachably combined, wherein an excavation bucket is suspended and supported below the horizontal running portion via a hanging member. Moving the vertical running section along the vertical leader suspended from the wellhead into the shaft to lower the shaft into the shaft, loading the earth and sand excavated at the shaft bottom into the discharging bucket, A step of sliding the vertical traveling part along the ascending to the wellhead,
At a position where the vertical leader is perpendicular to the horizontal leader installed above the wellhead, the horizontal traveling unit of the catcher device is separated from the vertical traveling unit and moved horizontally along the horizontal leader to a sediment discharge position, Loading and unloading excavated earth and sand in the earth discharging bucket, and returning the horizontal traveling part to a position orthogonal to the vertical leader along the horizontal leader while suspending and supporting an empty earth discharging bucket, The step of combining with the vertical traveling unit,
A method for unloading shaft excavated soil, which is repeated as necessary. 2. The vertical leader has a rack gear in a longitudinal direction thereof, and can be moved up and down in the shaft by driving a pinion gear provided in a tower assembled at a pit of the shaft. 2. The method according to claim 1, wherein the vertical leader is added in the longitudinal direction as the vehicle progresses. 3. A vertical leader suspended in a shaft from a wellhead, a horizontal leader perpendicular to the vertical leader above the wellhead, a vertical traveling portion slidable along the vertical leader, and along the horizontal leader. An excavated soil comprising a catcher device which is detachably combined with a slidable horizontal traveling portion, and an earth discharging bucket suspended from the horizontal traveling portion of the catcher device via a suspending member. Unloading device. 4. A winch is disposed above the horizontal traveling portion of the catcher device, and the discharging bucket is suspended and supported by a wire of the winch via a guide portion provided on the horizontal traveling portion. Item 3. The excavated soil carrying device according to Item 3. 5. The horizontal leader is openable and closable left and right at least in a position orthogonal to the vertical leader so as to sandwich the horizontal traveling portion of the catcher device. The provided horizontal rail and the horizontal traveling portion of the catcher device are engaged,
The excavated soil carrying device according to claim 3 or 4, wherein a horizontal traveling portion is slidable along the horizontal rail. 6. The vertical traveling portion and the horizontal traveling portion of the catcher device are detachable from each other by an engaging means, and a part of the horizontal leader is moved by the movement of the horizontal leader when the horizontal leader is closed. 6. The structure according to claim 5, wherein said engaging means presses said disengaging means, and said pressing force disengages said vertical running part from said horizontal running part.
The excavated soil carrying device as described in the above. 7. A catcher device comprising a detachable combination of a vertical traveling portion slidable along a vertical leader and a horizontal traveling portion slidable along a horizontal leader orthogonal to the vertical leader, and the catcher. A vertical / horizontal continuous unloading device, comprising a bucket suspended from a horizontal traveling portion of the device via a hanging member.