JP2000054424A - Dredging device for manhole of great depth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dredging device for a manhole, making an elevating post extensible further in multiple stages while maintaining slenderness to cope with the great depth of a manhole and reducing the height of a ground part for supporting and guiding the elevating post. SOLUTION: A dredging device for a manhole of great depth comprises a turning frame part 1 derrickingly fitted onto an underframe of a vehicle; an elevating guide part 2 mounted to the turning frame part 1 and provided with twin ascending and descending frames ascending and descending independently; an elevating post part 3 gripped by the elevating guide part 2 and put in expanding/contracting action and a dredging busket part 4 mounted to the lower end of the elevting post part 3. The descending frame is provided with a movable clamp 40 vertically moved interlocked with the descending frame. The elevating post part is extensible in three or more stages. A hydraulic cylinder is disposed between a first stage post and a second stage post, and expansion mechanism comprising a sheave and a wire is disposed between the respective posts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for dredging sludge, earth and sand, etc., which accumulates at the bottom of a manhole in a sewer system, and more particularly to an apparatus suitable for a deep manhole. The present invention relates to a dredging device. Here, a human hole in a so-called `` shuffle section '' provided at a place where a main sewer sewers across a river for a deep human hole is a typical example, but in the present invention it is originally limited to a shuffle section. Not something.

[0002]

2. Description of the Related Art FIG. 22 shows the structure of a general sewage system. Here, A is a river, B is an upstream sewer, C is an upstream shelter, D is a shelter, E is a downstream shelter, and F is a downstream sewer. A is a manhole cover for closing the opening of the human hole c, and E is a manhole cover. B is a work step portion (a scaffold for an operator) in the human hole c and the e. Thus, in the sewer sewage, sludge and earth and sand are deposited on manholes and the bottom of sewers over a long period of time (g, j, and r indicate the accumulated sludge and sediment). The cross section is reduced and the roughness is increased, which results in a situation where the flow of sewage is prevented. Conventionally, in order to dredge the earth and sand at the bottom of the manhole, a bypass is provided in the sewer near the shelter, and the sewer flow is shut off (that is, dried up). A method of removing the earth and sand in the human hole or a method of dredging the earth and sand at the bottom of the human hole by a diver without stopping the flow of sewerage is adopted. However, depending on the above-mentioned method, the work for interrupting the sewer flow near the overpass and providing the bypass is large-scale and time-consuming, and the construction cost is enormous. The above methods are inefficient and dangerous because of the manual work of the diver.
Etc., both have various problems. For this reason, a dredging method using mechanical force using a grab bucket or the like is conceivable, but there are various problems depending on the general-purpose dredging method according to the specificity of the manhole. That is,
The overpass manhole has a large depth, and the opening is closed by a small-diameter manhole cover (opened and closed by human power so that it can be made as small as possible). At the bottom of the manhole, pebbles with high specific gravity and solidified sediment are deposited. For this reason, depending on the normal dredging method, it is difficult to put the grab bucket into and out of the narrow opening, and even if it can be inserted through the narrow opening, the grab bucket is extended to the deep bottom. Reach, and
It is difficult to dredge earth and sand all over the bottom of the enlarged manhole (especially work steps in human holes become obstacles), and also to excavate and dredge the consolidated soil layer. Is technically difficult.

[0003] From this point of view, the present applicants have previously disclosed in
In Japanese Patent Application Laid-Open No. 1-246433 (hereinafter referred to as "prior art"), the following new human hole sediment dredging machine has been proposed. A post support frame mounted on the chassis of the vehicle so as to be undulating and pivotable; slidably disposed in a guide groove on the front surface of the post support frame; a dredge attachment is removably attached to a lower end of the post support frame; An upper post, an intermediate post and a lower post which are formed in sliding contact with each other and extend in a three-stage manner by two hydraulic cylinders provided inside the hollow portion of the lower post;
A lifting hydraulic cylinder disposed between the post support frame and an upper post of the lifting post, and taking up a reaction force on the post support frame;
The first-stage hydraulic cylinder of the lifting post is interposed between the upper post and the middle post, and its cylinder-side mounting part is fixed to the upper end of the middle part post, and the piston rod-side mounting part is the upper end of the upper post. The second stage hydraulic cylinder is interposed between the middle post and the lower post, the cylinder side mounting part is fixed to the upper end of the intermediate part post, and the piston rod side mounting part is the lower post. A lift-up hydraulic cylinder fixed to a lower end thereof, wherein the lifting hydraulic cylinder has a cylinder side connected to a post supporting frame and a piston rod side connected to an upper post of the lifting post. Sediment dredge for holes. Thus, according to this prior art,
The three-stage lifting post makes it slender and can achieve a large vertical lift, and combined with the guidance of the post support frame, can be accurately lowered into the narrow and deep-delayed manhole. It is suitable for dredging earth and sand for manholes. In addition, a large pressing force can be applied to the dredging attachment attached to the lower end of the elevating post by driving the elevating hydraulic cylinder, and dredging of earth and sand firmly solidified at the bottom of the overpass manhole can be realized. Furthermore, since the lifting post can be moved up and down by the lifting hydraulic cylinder, the attachment / detachment work of the attachment for dredging or the work of discharging earth and sand to the dump truck can be easily performed, and the lifting post can be moved horizontally. The dredging machine can be stably mounted on a vehicle, and can be mounted on a small vehicle.
However, according to this prior art, as the depth of the human hole increases, the cross section of the elevating post is inevitably increased, and it becomes difficult to insert the human hole into the opening. There are problems such as difficulty in working in space.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to further develop the above prior art and to solve the problem, and to maintain the slenderness of the elevating post while maintaining the slenderness in response to the increase in the depth of the human hole. It is possible to achieve further multi-stage, and furthermore,
An object of the present invention is to provide a dredging device for a deep human hole capable of reducing the height at a ground portion that supports and guides a lifting post.

[0005]

To achieve the above object, the present invention employs the following constitution. The first invention relates to an earth and sand dredging device, and a swivel frame portion 1 which is mounted on a chassis of a vehicle so as to be swivelable and / or undulating, and which is attached to a front end of the swivel frame portion and has two movable frames independently of each other. Lifting guide unit 2 that moves up and down, is held by the movable frame on the descent side of the lifting guide unit, and is itself mounted on the lower end of the lifting post unit 3 that expands and contracts in multiple stages. It is characterized by comprising a dredging bucket portion 4 for dredging earth and sand. In the above configuration, the two movable frames of the elevating guide unit 2 include an elevating frame 21 and a descent frame 22, and the elevating frame is an elevating guide frame 20 fixed to a revolving frame.
The lifting hydraulic cylinder is interposed between the lifting frame and the lifting / lowering guide frame, and the lowering frame is guided by the lifting frame and can be lowered. A descent hydraulic cylinder is interposed between the descent frame and the descent side movable frame. The descent side movable frame holds an elevating post, and a movable clamp that is guided by the descent side movable frame to move up and down. The sprockets are fixed above and below the movable frame on the descending side, a chain is wound around, and the rotation drive of the chain is interlocked with the descending frame, and the movable clamp is fixed to the chain. The movable frame on the descending side can hold the elevating post, and can move up and down while being guided by the movable frame on the descending side. Clamps are arranged, sprockets are fixedly mounted on the upper and lower sides of the movable frame on the descending side, a chain is wound around, the rotation drive of the chain is driven by the sprocket, and the movable clamp is fixedly mounted on the chain. The lifting posts must have at least three posts nested
It is made to be able to expand and contract more than a step, a hydraulic cylinder is arranged between the first stage post and the second stage post, and sheaves are arranged up and down except for the outermost and innermost posts, and the wire passes through the sheave The fact that the wire is fixed to the outer and inner posts of the post around which the sheave is mounted is an optional matter that can be appropriately adopted. In addition, the above or each combination is also an optional matter. The second invention relates to a vertical movement mechanism of a movable clamp, in which two movable frames move up and down independently of each other, and hold a lifting post for attaching a dredging bucket to a lower end of the lower movable frame, and In a dredging device equipped with a movable movable clamp, a sprocket is fixedly mounted on the upper and lower sides of the movable frame on the descending side, a chain is wound around, and the rotational drive of the chain is interlocked with the descending frame, and the movable The clamp is fixed to the chain. Third
The second invention relates to an extension / retraction mechanism of a lifting / lowering post, and a hydraulic cylinder is provided between a first-stage post and a second-stage post in a lifting / lowering post in which a plurality of posts can be telescopically extended and retracted to at least three or more stages. Are arranged above and below the outermost and innermost posts, the wire is wound around the sheave, and the wire is fixed to the outer and inner posts of the post to which the sheave is attached. Features that.

(Operation) In dredging the earth and sand at the bottom of the human hole P, the vehicle H is moved to the vicinity of the human hole P, and then the elevating guide part 2 is erected, and the elevating post part 3 is placed directly above the human hole P. Position. In the elevating guide section 2, the first movable frame (elevated frame) 21 is placed at a steady position, the second movable frame (descending frame) 22 is lowered by applying a reaction force to the first movable frame, The lifting post 3 is extended so that the dredging bucket 4 reaches the bottom of the human hole. The dredging bucket section 4 dredges the earth and sand, then contracts the elevating post section 3, raises the second movable frame 22, further raises the first movable frame 21, and places the dredging bucket section 4 on the ground. Discharge the earth and sand into the earthmoving truck that is raised sufficiently above the surface and moved below it. The movable clamp moves up and down as the second movable frame is raised by the vertical movement mechanism, and moves down as the second movable frame moves down, so that the lifting / lowering post unit 4 moves up and down quickly. All the posts of the elevating post section 3 are extended in conjunction with the extension of the hydraulic cylinder by the extension mechanism, and all the posts are contracted in conjunction with the contraction of the hydraulic cylinder.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a dredging device for a deep human hole according to an embodiment of the present invention. FIGS. 1 to 15 show a dredging device for a deep human hole according to the present invention (hereinafter simply referred to as “dredging device”).
FIG. 1 and 2
Shows the schematic configuration of the entire dredging apparatus S, and is shown in FIGS.
Shows the configuration of each part of the present dredging apparatus S. In these figures, P indicates a human hole, O indicates an opening of the human hole P, and Q indicates sediment deposited on the bottom of the human hole P.

Vehicle H (see FIGS. 1 and 2) As shown in FIGS. 1 and 2, the dredging device S of the present embodiment adopts a vehicle mounting type, and H is a vehicle, that is, a truck having a wheel type carrier I. The dredging device S is mounted on the carrier I and can be moved to an appropriate position. J is a rear outrigger provided at the rear end of the carrier I, and K is a front outrigger provided on both sides of the front of the carrier I. L is a frame support column, and L is a hydraulic unit.

The dredging device S (see FIGS. 1 to 13) is a swivel frame portion 1, which is rotatably provided on a loading platform I of a vehicle H, as shown in FIGS. An elevating guide unit 2 which is mounted on the front end of the revolving frame unit 1 and moves up and down by two movable frames, and is gripped by the movable frame of the elevating guide unit 2;
It comprises a main component of a lifting post part 3 which itself expands and contracts in multiple stages, and a dredging bucket part 4 mounted on the lower end of the lifting post part 3 for dredging earth and sand.

Hereinafter, a detailed configuration of each part of the present dredging apparatus S will be described. Swivel Frame 1 (See FIG. 3) The swivel frame 1 uses a swivel base 10 rotatably mounted on a bed I of a vehicle H via a pin 10a as a base, and has a frame structure and A configuration in which each driving device is installed is adopted. The revolving base 10 has gear teeth carved on the outer periphery, and is rotated by meshing with a pinion 10b that receives a drive from a hydraulic motor (not shown). (Frame Structure) The support frame 11 is
Is fixed, and a pin 11a is attached to the tip of the support frame 11.
The mounting rib 12 is swingably fixed via
An undulating hydraulic cylinder 13 is fixed between the support frame 11 and the mounting rib 12 via pins 14a and 14b. As a result, the mounting rib 12 and, consequently, the elevating guide frame 2 attached to the mounting rib 12 are freely raised and lowered by the expansion and contraction of the piston 13a of the hydraulic cylinder 13 for raising and lowering. (Hose Reel 16) A hose reel 16 is further provided on the swivel base 10 to take up and rewind the hydraulic piping system of the dredging apparatus S. The hydraulic system of the present dredging device S includes a hydraulic system 1 connected to a hydraulic cylinder in the revolving frame unit 1, a hydraulic system 2 connected to an ascending and descending hydraulic cylinder in the elevating guide unit 2, and a telescopic hydraulic cylinder in the elevating post unit 3. The hydraulic system is composed of four systems: a continuous hydraulic system 3, and a hydraulic system 4 connected to the opening / closing hydraulic cylinder in the dredge bucket unit 4. The hose reel 16 takes up and rewinds the hydraulic systems 2, 3, and 4.

Elevating guide unit 2 (see FIGS. 4 to 10) The elevating guide unit 2 is mounted via the mounting ribs 12 of the swivel base unit 1, and is movable up and down by a two-stage movable frame. In addition, the lifting post part 3 is fixedly held. That is, the elevating guide unit 2 includes an elevating guide frame 20 fixed to the mounting rib 12 of the revolving base unit 1, an elevating frame 21 guided by the elevating guide frame 20, and a guide to the elevating frame 21. And a lowering frame 22 that can be lowered by being lifted. Further, a hydraulic cylinder 23 for raising, which is interposed between the guide frame 20 for raising and lowering and the raising frame 21, a raising frame 21
And a lowering hydraulic cylinder 24 interposed between the lowering frame 22 and the lowering frame 22.

(Elevating Guide Frame 20) (See FIGS. 4 to 6 and 9) The elevating guide frame 20 is a guide member 20b having a U-shaped cross section on both sides of a vertically long plate-like substrate 20a for maintaining rigidity.
Is fixed. The groove of the guide member 20b is arranged outward. The mounting rib 12 of the revolving frame unit 1 is mounted on the substrate 20a. In addition, the board 20a and the guide member 20b provide an installation space for the lifting hydraulic cylinder 23.

(Rising frame 21) (FIGS. 4, 7 to 9)
The ascending frame 21 forms a main body with a vertically long plate-like substrate 21a for maintaining rigidity, and a guide member 21b fixed on both sides of the substrate 21a and having a U-shaped cross section. The guide member 21b is arranged with the groove portion facing inward. Guide member 21
A rib member 26 is fixedly mounted on the side surface of the guide frame 20b, and a roller 27 fitted in the groove of the guide member 20b of the elevating guide frame 20 is rotatably attached to the rib member 26. Further, a rib member 28 is arranged alongside the rib member 26, and a roller 29 is rotatably attached to the rib member 28. The lifting hydraulic cylinder 23 is fixed at its lower end via a pin to a rib 31 projecting from the lower end of the front surface of the substrate 20a of the lifting guide frame 20 via a pin. It is fixed to the protruding rib 32 via a pin.

(Descending Frame 22) (See FIGS. 7 to 10) The descending frame 22 is a vertically long plate-like substrate 22a for maintaining rigidity, and frame members 22b protruding from both sides of the substrate 22a.
Thus, a main body is formed. A roller 34 fitted into the groove of the guide member 21b of the ascending frame 21 is rotatably mounted on the upper portion of the frame member 22b via a rotating shaft.
On the inner surface of the substrate 22a, two guide members 36 having a U-shaped cross section are fixedly provided with their grooves directed inward. In addition, a cutout portion 22c provided for mounting the descending hydraulic cylinder 24 is formed in an upper portion of the substrate 22a. The lowering cylinder 24 is fixed via pins to a rib 37 protruding from the upper end of the cylinder portion on the upper front surface of the substrate 21 a of the ascending frame 21, and the piston portion 24 a is attached to the substrate 2.
It is fixed via a pin to a rib 38 protruding from the lower part of the front surface of 2a.

(Movable Clamp 40) (See FIG. 10) A movable clamp 40 is mounted on the descending frame 22 so as to be able to move up and down along a guide member 36 and to hold and hold the elevating post portion 3. More specifically, the movable clamp 40 includes a pair of clamp plates 41 and a roller 42 attached to the base of the clamp plate 41 via a rotating shaft. The clamp plates 41 are rigidly connected to each other with a cross beam 41a. Reference numeral 42 is inserted into the groove of the guide member 36.
The elevating post part 3 is fixed to the tip side of the clamp plate 41. The movable clamp 40 is moved up and down with the chain. FIG. 10 shows the vertical drive mechanism 43. That is,
An upper sprocket 43a is provided above the descending frame 22.
In addition, a lower sprocket 43b is fixed to a lower portion, and a chain 43c is attached to the sprocket 43b.
a, 43b is wound endlessly. And it is fixed to the ascending frame 21 and the descending frame 22
(The groove is formed on the substrate 22a of the descending frame 22)
Formed. A chain 43c on the rear side is fixed to a mounting bracket 43d projecting from a not-shown). On the other hand, the movable clamp portion 40 is fixed to the front chain 43c via the mounting rib 41a. This allows
When the descending frame 22 moves up and down relative to the ascending frame 21, the movable clamp 40 also moves up and down in conjunction with the moving frame.

Elevating post part 3 (see FIGS. 11 to 13) The elevating post part 3 is gripped by the elevating guide frame 2,
It itself expands and contracts in multiple stages, and a dredge bucket 4 is attached to the lower end thereof. The elevating post part 3 of the present embodiment extends in five steps. That is, 4
Reference numerals 5, 46, 47, 48, and 49 denote first, second, third, fourth, and fifth stage posts, respectively.
No. 49 is a hollow quadrangular prism and is of a telescopic type. A post extension hydraulic cylinder 50 is disposed at the center of these posts 45 to 49, and the upper end of the cylinder portion is attached to the inner wall of the second stage post 46 via a pin, and the upper end of the piston portion 50a is connected to the first end. It is attached to the inner wall of the step post 45 via a pin. A wire extension mechanism 51 cooperating with the post extension hydraulic cylinder 50 is further disposed in the lifting post 3, and the first stage post 4 is extended by extending the piston portion 50 a of the post extension hydraulic cylinder 50.
5, the second, third, fourth and fifth posts 46,
47, 48 and 49 are sequentially extended.

FIG. 13 schematically shows the positional relationship between the post extending hydraulic cylinder 50 and the wire extending mechanism 51 disposed in the elevating post section 3. As shown in FIG. In the figure, reference numeral 52 denotes an upper sheave, which is used for a pulling-up operation.
a, the second sheave 52b and the third sheave 52c. 5
Reference numeral 3 denotes a lower sheave, which is subjected to a lowering operation and includes a first sheave 53a, a second sheave 53b, and a third sheave 53c. 54 is a wire for pulling down,
a, 54b, and 54c, and one end of the wire 54a is fixed to the upper portion of the first post 45, wound around the first lower sheave 53a fixed to the second post 46, and the other end is set to the third end. It is fixed to the upper part of the post 47. As shown in the drawing, the wire 54b includes a second lower sheave 53b fixed to the second post 46 and the third post 47, and a fourth post 4
8 is arranged. Similarly, the wire 54c is connected to the third post 4
7. Third lower sheave 53 fixed to fourth post 48
c, arranged on the fifth post 49. Reference numeral 55 denotes a pulling wire, which includes three wires 55a, 55b, and 55c. One end of the wire 55a is fixed to the lower part of the first post 45, the wire 55a is wound around the first upper sheave 54a fixed to the second post 46, and the other end is fixed to the lower part of the third post 47. The wire 55b is connected to the second post 46 and the second post
The upper sheave 52 b is disposed on the fourth post 48. Similarly, the wire 55c is disposed on the third upper sheave 52c and the fifth post 49 fixed to the third post 47 and the fourth post 48, respectively. With regard to the extension operation, the second stage post 46 starts descending with the extension of the post extension hydraulic cylinder 50, and the wire 54a lowers the third stage post 47. As the third post 47 descends, the wire 54b lowers the fourth post 48, and the wire 54c moves
The step post 49 is lowered. All the posts 45 to 49 are extended by the full stroke of the post extension hydraulic cylinder 50. When the post extension hydraulic cylinder 50 is contracted in the extended lifting post section 3, the second stage post 46 starts to rise, and the wire 55a is connected to the third stage post 4
7 is raised. As the third post 47 rises, the wire 55b raises the fourth post 48, and the wire 55c raises the fifth post 49. All the posts 45 to 49 are contracted by the full stroke of the post extension hydraulic cylinder 50.

The elevating post part 3 includes the elevating guide frame 2
The first stage post 45 is fixed to the zero movable clamp 40. Further, the lowermost fifth stage post 4 of the elevating post part 3
At the lower end of 9, a wide mounting plate 57 for fixing to the dredging bucket section 4 is fixed.

Dredging bucket 4 (see FIGS. 14 and 15) The dredging bucket 4 is detachably attached to the lower end of the elevating post 3, and is opened and closed by a hydraulic drive. The width is regulated so as to easily pass through the portion O. More specifically, the bucket body 60 includes two bucket elements 60a and 60b, and can be opened and closed via pins 61. The lower end of the center frame 62 is divided into two forks 62a. The two forks 62a hold the pins 61 of the bucket body 60, and are mounted on the upper side via the bucket support brackets 63 and the pins 64. The flange 63a at the upper end of the bucket support bracket 63 is brought into contact with the mounting plate 57 of the elevating post part 3, and is fixed detachably with fixing bolts. The center frame 62 further includes an arm 62b
Are stretched on both sides perpendicular to the fork 62a.
A bucket opening / closing hydraulic cylinder 65 is mounted between each of the bucket elements 2b and each of the bucket elements 60a, 60b via a respective pin. That is, the cylinder side of the bucket opening / closing hydraulic cylinder 65 is connected to the arm 62 b through the pin 66.
In addition, the piston portion 65a is pivotally connected to the bucket elements 60a, 60b via the pins 67. The bucket elements 60a and 60b are closed by the extension of the piston 65a of the bucket opening / closing hydraulic cylinder 65, and the bucket elements 60a and 60b are opened around the pins 61 by the contraction of the piston 65a. Reference numeral 68 denotes a lock pin, which engages with the pin 61.

If the specifications of the dredging device S and the human hole P are shown as an example, the diameter of the opening O of the human hole P is about 60 cm,
Its depth is more than 10m in the overcast part. In the present device S, the elevating guide frame 20,
The ascending frame 21 and the descending frame 22 each have a length of 2 m 90 cm, and the first post 4
5 has a length of 3 m 50 cm and a side of 35 cm, and the second stage post 46, the third stage post 47, the fourth stage post 48, and the fifth stage post 49 all have the first stage post 4
5, and one side is 30, 25, 2 respectively
Take 0.15 cm. Further, the maximum height H of the device S is 7
m10cm, the maximum lifting height h of the dredging bucket part 4 is 2
Measure 20 cm (see FIG. 17).

(Operation of the Dredging Apparatus S) A description will be given of a dredging operation in a human hole at a large depth performed using the dredging apparatus S of the present embodiment. FIGS. 16 to 21 show the construction procedure, and the procedure will be described below with reference to these drawings.

(1) The vehicle H is moved to the vicinity of the human hole P to be dredged, and the outriggers J and K are operated at predetermined positions to fix the vehicle H. FIG. 16 shows that this dredging device S
A state where the vehicle H is stored above is shown. In this state, the vehicle H is moved and fixed. That is, the hydraulic cylinder 13 for raising and lowering the revolving frame 1 is contracted, the elevating post 3 is tilted horizontally, and the load is deposited on the frame support column L of the vehicle H.

(2) Thereafter, the hydraulic cylinder for raising and lowering 13 of the revolving frame portion 1 is extended, and the elevating guide portion 2 is raised. FIG. 17 shows this state. In this state, the lifting hydraulic cylinder 23 is extended and the lifting frame 21 is lifted.
Is in the ascending position, and the descending hydraulic cylinder 24 and the extending hydraulic cylinder 50 of the elevating post part 3 are contracted. In this state, the top of the ascending frame 21 is at the highest position and has a height H above the ground surface. Further, the dredging bucket unit 4 is located at the highest position above the ground surface with a distance h from the ground surface. This state is called the highest position. Note that the state of FIG. 17 is the same as the step (7a) described later.

(3) The lifting hydraulic cylinder 23 is contracted to lower the lifting frame 21, and the lowering frame 22 and the lifting post 3 are lowered integrally while maintaining the state of the step (2). As a result, the dredging bucket unit 4 faces the position immediately near the opening O of the human hole P. FIG. 18 shows this state. In this state, all the hydraulic cylinders 22, 23, 50 are in a contracted state. This is called a steady position.

(4) (4a) Extend the descending hydraulic cylinder 24 to lower the descending frame 22 with respect to the ascending frame 21, and insert the dredging bucket section 4 at the tip from the opening O of the human hole P. FIG.
Indicates this state. That is, as the descending frame 22 descends, the vertical drive mechanism 43 operates and the movable clamp 40
Also descends further in conjunction with the descending movement of the descending frame 22. (4b) The extension of the descending hydraulic cylinder 24 is continued, the descending frame 22 is further descended, and the movable clamp part 40 gripping the elevating post part 3 is lowered to the lowermost end of the descending frame 22. FIG. 20 shows this state. In this state, FIG.
As in the state of No. 9, the lifting post part 3 is contracted.

(5) Next, the post extension hydraulic cylinder 50 is extended in the elevating post section 3 to
The five-stage posts 45, 46, 47, 48, and 49 are sequentially extended by the cooperation of the wire extension mechanism 51 to extend the entire elevating post 3, and the dredging bucket 4 is placed at the bottom of the human hole P. Let it reach. FIG. 21 shows this state. In this case, the extension of the elevating post part 3 gives a pressing force to the dredging bucket part 4, so that a margin is left.

(6) The dredging bucket unit 4 is opened and closed to dredge the soil R at the bottom of the human hole P and perform dredging. In this dredging operation, the pressing force against the dredging bucket 4 is given by the extension of the post extension hydraulic cylinder 50.

(7) (7a) By retracting the post-extension hydraulic cylinder 50, the up-and-down post part 3 is contracted. Then, the descending hydraulic cylinder 24 is contracted to raise the descending frame 22 and raise the bucket part 4 to the ground. To raise. (7b) Further, the lifting frame 21 is raised by extending the lifting hydraulic cylinder 23, a sufficient space distance h between the ground surface and the dredging bucket portion 4 is taken, a transport truck (dump truck) is introduced, and the dredging bucket portion is moved. Release 4 to discharge the dredged soil. FIG. 17 shows this state.

(8) The ascending hydraulic cylinder 23 is contracted to lower the ascending frame 21, and thereafter the above-mentioned (3) to (7)
Is repeated. When the dredging operation is completed, the device S is stored in the process (1) through the process (7).

In the above steps, the steps (2)
It is possible to do (3) (4) (5) simultaneously. Furthermore, following step (5), steps (3) and (4), or
(4) and step (3) can also be performed. Therefore, the lifting operation is not limited to the mode of (7a), and the lifting post unit 3 may be contracted after the lowering frame 22 is raised. Furthermore,
Other appropriate operation modes can be adopted within the range of the function of the present apparatus S.

According to the dredging device S of the present embodiment, since the lifting guide 2 is composed of the two rising and lowering frames 21 and 22 which move up and down independently of each other, the height of the ground portion can be reduced as much as possible. At the same time, the lower ends of the lifting post part 3 and the dredging bucket part 4 can be made as high as possible above the ground surface, and the workability of the earth removal work can be improved. Further, since the movable clamp 40 moves up and down in conjunction with the descending frame 22,
Can be quickly moved up and down, thereby improving work efficiency. Further, since the multi-stage post is continuously extended and contracted by only a single hydraulic cylinder, the elevating post portion 3 can cope with an increase in the depth of a human hole while maintaining its slenderness. Since all the driving devices used in the present dredging device S are operated by hydraulic pressure, the driving source can be unified, the structure is simplified, and not only a large driving force is obtained, but also the control thereof.・
Adjustment is easy.

The present invention is not limited only to the above-described embodiment, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. The vehicle H does not matter of wheel or crawler type. Also,
The type is not limited to the self-propelled type, and may be a towed type or a stationary type. The revolving frame unit 1 does not require a revolving function, and may have a function of moving back and forth and / or left and right, or may be fixed. In short, it is only necessary to have an undulating action. The present invention is not limited to the mode in which the mounting ribs 12 of the revolving frame unit 1 are directly fixed to the elevating guide frame 20, but can be removably mounted via a mounting plate (not shown). The elevating guide frame 20, the ascending frame 21, and the descending frame 22 each have a plate-like substrate, but they may be formed of a frame. For driving the movable clamp part 40, the upper sprocket 43a and / or the lower sprocket 43b have a hydraulic or electric drive source, and the rotation thereof causes the chain 43c to rotate.
Can be rotated to move the movable crumb section 40 up and down. Up and down movement of the movable clamp section 40 is performed by another independent hydraulic cylinder.

[0033]

According to the earth and sand dredging device of the present invention, since the lifting guide is composed of two movable frames which move up and down independently of each other, the height of the ground portion can be reduced as much as possible and the lifting post can be lowered. The lower end of the dredging bucket can be made as high as possible above the ground surface, and the workability of the earth removal work can be improved. According to the movable clamp vertical movement mechanism of the present invention, since the movable clamp moves up and down in conjunction with the second movable frame, the up and down movement of the elevating post can be quickly performed, and the working efficiency is improved. According to the extension / retraction mechanism of the elevating post portion of the present invention, the multistage post is continuously extended / contracted with only a single hydraulic cylinder.

[Brief description of the drawings]

FIG. 1 is a side view (an arrow direction in FIG. 2) showing an entire embodiment of a dredging apparatus for a deep human hole according to the present invention.

FIG. 2 is a front view thereof (a view in the direction of arrows in FIG. 1).

FIG. 3 is an enlarged configuration diagram of a revolving frame unit.

FIG. 4 is a side view of a lifting guide frame portion (a view in the direction of arrows in FIGS. 5 and 7).

FIG. 5 is a view in the direction of arrow 5 in FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 4;

FIG. 7 is a view in the direction of arrow 7 in FIG. 4;

FIG. 8 is an enlarged view of a part of FIG. 7;

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

FIG. 10 is a schematic diagram of a vertical drive mechanism of a movable clamp unit.

FIG. 11 is a partial cross-sectional front view of a lifting post.

FIG. 12 is a partial cross-sectional side view of an elevating post.

FIG. 13 is a schematic diagram showing a wire mechanism of a lifting post.

FIG. 14 is a front view of a dredge bucket section.

FIG. 15 is a side view of a dredge bucket section.

FIG. 16 is a view showing a procedure of one step (storage state) of a work procedure.

FIG. 17 is a view showing a procedure showing one step (the uppermost limit position) of a work procedure.

FIG. 18 is a flowchart showing one step (a steady position) of a work procedure.

FIG. 19 is a flowchart showing one step of the operation procedure (a descending process of the descending frame).

FIG. 20 is a view showing a procedure showing one step of the operation procedure (the lowest state of the descending frame).

FIG. 21 is a view showing a procedure showing one step of an operation procedure (extended state of a lifting post).

FIG. 22 is a cross-sectional view of a protruding portion.

[Explanation of symbols]

S: Sediment dredging device, P: Overpass, O: Opening, Q:
Deposited sediment, 1 ... Revolving frame, 2 ... Lifting guide, 3
... Elevating post part, 4 ... Dredging bucket part, 13 ... Hydraulic cylinder for undulation, 20 ... Elevating guide frame, 21 ... Elevating frame, 22 ... Descent frame, 23 ... Elevating hydraulic cylinder, 24 ... Descent hydraulic cylinder, 40 ... movable clamp, 43 ... vertical drive mechanism, 43a ... upper sprocket, 43b ... lower sprocket, 43c ... chain, 4
3d: mounting bracket, 51: wire extension mechanism,
52: upper sprocket, 53: lower sprocket, 5
4: wire for lifting, 55: wire for lowering

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuki Takagi 8-9-9 Iriya, Adachi-ku, Tokyo

Claims (7)

[Claims] 1. A swivel frame portion mounted on a vehicle chassis so as to be swivelable and / or undulating; a lift guide mounted on a front end of the swivel frame portion and having two movable frames independently ascending and descending. A lifting / lowering post portion gripped by the movable frame on the descending side of the lifting / lowering guide portion and performing multi-stage expansion / contraction operations by itself; a dredging bucket portion attached to a lower end of the lifting / lowering post portion and configured to dredge earth and sand; An earth and sand dredging device characterized by the above-mentioned. 2. The two movable frames of the elevating guide section include an ascending frame and a descending frame. The ascending frame is guided by an elevating guide frame fixed to a revolving frame and is capable of ascending. A lifting hydraulic cylinder is interposed between the lifting frame and the lifting guide frame, and the lowering frame is guided by the lifting frame so as to be lowered, and a lowering hydraulic cylinder is provided between the lifting frame and the lowering frame. The earth and sand dredging device according to claim 1, wherein 3. A movable clamp on the lower movable frame which grips an elevating post and moves up and down while being guided by the lower movable frame. Sprockets are provided above and below the lower movable frame. The earth and sand dredging device according to claim 2, wherein the chain is wrapped around while being fixed, the rotation driving of the chain is linked to a descending frame, and the movable clamp is fixed to the chain. 4. A movable clamp for gripping an elevating post portion and moving up and down by being guided by the descending movable frame is disposed on the descending movable frame, and sprockets are provided above and below the descending movable frame. 3. The earth and sand dredging device according to claim 2, wherein the chain is wound around the chain, the chain is driven to rotate by a sprocket, and the movable clamp is fixed to the chain. 4. 5. A lifting post, wherein a plurality of posts are telescopically extended and retracted in at least three stages, a hydraulic cylinder is disposed between the first stage post and the second stage post, and 3. The sediment dredging according to claim 2, wherein the sheaves are arranged up and down except for the inner post, the wire is wound around the sheave, and the wire is fixed to the outer and inner posts of the post to which the sheave is attached. 4. apparatus. 6. A dredging system in which two movable frames rise and fall independently of each other, hold a lifting post for attaching a dredging bucket to a lower end of the lower movable frame, and attach a movable clamp that moves up and down. In the apparatus, sprockets are fixedly mounted on the upper and lower sides of the movable frame on the descending side, and a chain is wound around. The rotational drive of the chain is interlocked with the descending frame, and the movable clamp is fixed on the chain. A vertical movement mechanism for a movable clamp. 7. An elevating post part in which a plurality of posts are telescopically extendable in at least three stages, a hydraulic cylinder is disposed between the first stage post and the second stage post. A sheave is arranged above and below except for the innermost post, a wire is wound around the sheave, and the wire is fixed to the outer and inner posts of the post to which the sheave is attached. Post extension mechanism.