JP3285548B2 - Shaft lining device and lining method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft lining device for rotating and lining cement-based lining materials such as mortar and concrete on the inner wall surface of an excavated shaft, and particularly to a shaft having a large diameter. The present invention relates to a shaft lining device and a lining method suitable for providing effective lining.

[0002]

2. Description of the Related Art As a shaft lining device, there is, for example, one proposed by the present applicant and disclosed in JP-A-9-256790 and JP-A-10-82272. Is a form that is mounted and used at the end of the boom of the base machine installed at the bottom of the shaft, and in the latter case, a lifting unit such as a winch is used from a hanging unit installed at the entrance of the shaft to winch. It is a form that is mounted and used in a suspended state.

[0003] The lining device includes a stirring and mixing means for stirring and mixing the quick-setting agent into the lining material in a fluidized state;
A rotating projection means for projecting the lining material kneaded with the quick setting agent onto the excavation wall by rotation of an impeller (impeller); After the admixture is lowered by the action of gravity while stirring and mixing the quick-setting agent, the kneaded projection lining material is projected by a centrifugal force in a predetermined projection direction by an impeller arranged at the lower end side of the stirring cylinder.

In these lining devices, the lining material is stirred and mixed with the quick-setting agent while being lowered by the action of gravity. Therefore, it is possible to prevent the lining material from remaining or solidifying in the stirring and mixing means, and to prevent a blockage trouble. Since the kneaded lining material can be smoothly transferred to the rotating projection unit, and the lining material is rotated and projected without using compressed air as in shotcrete,
The working environment can be improved by suppressing the generation of dust, and the rebound can be reduced so that lining with high adhesion efficiency can be performed.

[0005]

However, there is still room for further improvement in these lining devices. For example, when the lining material is projected by a centrifugal force in the rotary projection means, a predetermined projection direction is required. It is important to perform high-quality lining that accurate and concentrated projection is performed. In the configuration of the lining device that performs projection from the discharge port provided in the rotating impeller, the projection direction is maintained, but the The relatively large area may not be suitable for restoration linings that fill some recesses.

Further, particularly when lining the inner wall surface of a large diameter shaft, it is possible to accurately project in a swinging state while changing the projection direction from a position close to the inner wall surface of the shaft so that the projection distance is not short. However, this was not possible with the configuration of the lining device.

In the stirring and mixing of the lining material and the quick-setting admixture in the stirring and mixing means, it is preferable to stir and mix the quick-setting admixture with the lining material in a uniform dispersion state in a short time. This is important in lining, and the configuration of the lining device in which the quick-setting agent is simply injected into the stirring cylinder is not always sufficient.

The lining work is carried out every time a certain depth is excavated. In particular, when lining the inner wall surface of a large-diameter shaft, in the case of the former lining device described above, the mounted shovel system is used. It is difficult to move the boom tip of the excavator up and down over a wide range while maintaining a certain distance from the inner wall surface of the shaft, and in the case of the latter lining device described above, there is no problem in discharging the excavated earth and sand In addition, it is necessary to remove the apparatus every time, and particularly in the case of lining the inner wall of a shaft having a large diameter, the projection distance is insufficient.

In addition, it is desirable that the lining material remaining in the stirring cylinder or the impeller can be turned over so that the lining material can be conveniently cleaned or overhauled after use. There is no such configuration.

It is desirable that the entire apparatus is compact and well-balanced in a suspended state so that handling operation is easy and safety is ensured. Is not adopted.

Accordingly, an object of the present invention is to provide a shaft lining device and a lining method in which there is still room for improvement in the above-described lining device, and these points are further improved.

[0012]

According to the present invention, there is provided a shaft lining device according to the present invention, which includes a frame for supporting each part, a suspension mechanism for mounting the frame on a boom of a base machine installed at the bottom of the shaft, and a lining material. A material introduction section for supplying a quick setting agent, a stirring and mixing section for kneading the lining material and the quick setting agent to produce a projection lining material, and a rotary projection section for rotatingly projecting the projection lining material on the inner wall surface of the shaft using an impeller. ,
A stirring / mixing unit and a rotation driving unit that rotationally drives the rotary projection unit are provided.

In this vertical shaft lining device, the stirring and mixing section is provided with a stirring rotary shaft having a stirring rod radially protruding from a shaft of a vertically arranged stirring cylinder, and is provided with a stirring cylinder through a material introduction section. With respect to the lining material and the quick-setting agent supplied from the upper end side, the stirring rotation shaft is rotated by the rotary projection motor provided in the rotation drive unit, and the mixture is kneaded with the stirring rod, and the kneaded projection lining material is subjected to gravity. And the rotary projection unit is equipped with a plurality of blades.
The impeller is attached to the lower end of the stirring cylinder.
Around each of the propellers, a plurality of rows are pivotally attached to a directional control plate.
And between the rollers and the outer peripheral surface of the impeller
An endless belt is wound around the opening of the projection port,
The impeller is rotationally driven by the rotary projection motor.
And the stirring rotation shaft and the endless belt are rotated in conjunction with each other.
In both cases, the linked rotation of the endless belt is controlled by the rollers.
And the direction control plate is rotated by a direction control motor.
When driven, the position of the projection port with respect to the impeller can be changed. (Claim 1)

According to the first aspect of the present invention, the lining material is stirred and mixed with the quick-setting agent while being lowered by the action of gravity, thereby preventing the lining material from remaining or solidifying in the stirring and mixing means. As well as the smooth transfer of the kneaded lining material to the rotating projection unit, and the lining material is rotated and projected without using compressed air as in the case of shotcrete. In addition to the above, the same effects as those of the previous proposals can be achieved, such as that lining with good adhesion efficiency can be performed by reducing rebound.

In addition, when the direction control plate is stationary and the projection port is kept at a fixed position, it is possible to accurately and intensively project in a predetermined projection direction, and to rotate the direction control plate to a desired rotation. When the lining of a large diameter shaft is constructed, the base machine can be brought close to the inner wall surface of the shaft, and can be accurately adjusted for each predetermined width. In addition, a uniform lining can be constructed and can be adapted to a repair lining.

The rotary projection motor rotates the impeller.
To rotate the stirring rotation shaft at the same time.
The number of motors used and the synchronous rotation of both
As well as being guided by rollers outside the impeller.
The endless belt wound around the circumference is used when the impeller is rotated.
The roller and the endless belt
The impeller is smoothly supported by the
The endless belt does not receive a large load, so
No need.

The rotary projection unit in the lining device may have a configuration in which the lower end side of the stirring tube is concentrically housed and disposed in the impeller, thereby shortening the machine length and spraying the lining. The transfer of the material can be performed smoothly, and the time until the projection can be shortened, which contributes to preventing the deterioration and consolidation of the material.

Further, in the stirring and mixing section according to the first aspect, a conical cylindrical body having an inside for forming a quick-setting agent introduction chamber is provided with the stirring vessel.
Provided on the upper end side of the stirring shaft,
The lining material protrudes in a spray shape and scatters on the inner surface of the stirring cylinder.
And a set of quick-setting agent introduction chamber.
Protrudes radially on the mouth side to scatter the quick-setting agent on the inner surface of the stirring cylinder
It is possible to adopt a configuration in which a plurality of blade plates are provided . (Claim 2)

[0019] According to the second aspect, the lining material immediately introduced to a stirred mixture portion is stretched so as to be slammed to the inner surface of the agitation cylinder, quick-setting admixture is deposited in a dispersed state on the Therefore, as compared with the rotary projection type proposed in the previous proposal, the quick-setting binder can be uniformly added in a short time and kneaded, and an early-strength projection lining material can be effectively obtained with a small amount of the quick-setting binder. And the generation of dust is reduced.

Further, a base on which the stirring and mixing unit, the rotary projection unit and the rotary drive unit according to claim 1 or 2 are mounted, and an elevating mechanism unit for suspending and raising the base from a frame unit are provided. At the same time, it is possible to adopt a configuration in which an extension pipe that expands and contracts in accordance with the elevation is provided in the material introduction section in a mode of being connected to the upper end of the stirring cylinder. (Claim 3)

[0021] According to the third aspect, the raising and lowering by the height of stirring and mixing unit with rotating projecting portion and the rotary drive unit in accordance with the drilling depth by the elevating mechanism, by stretching the extension cylinder of the material introduction part Correspondingly, the lining can be constructed by swinging the head while precisely changing the height position of the projection port, and does not hinder the excavation work as in the device proposed earlier.

Further , the base according to claim 3 is detachably engaged with the frame portion at an unbalanced position of weight, and the stirring tube and the extension tube are detachably connected to each other, so that the base is attached. When the suspension of the elevating mechanism is loosened in a state where the stirring tube is detached from the extension tube while being locked to the frame, the stirring and mixing unit mounted on the base, the rotating projection unit and the rotating drive unit roll over. It can be configured. (Claim 4)

[0023] According to the fourth aspect, when the overhaul or cleaned after use for the stirring and mixing unit and the rotary projection unit, it is possible to perform the work very easily and safely.

In the lining method for a shaft according to the present invention, a lining device is mounted on the end of a boom of a base machine that runs on the bottom of a shaft, and the lining device is projected vertically and horizontally in a state where the lining device is close to the inner wall surface of the shaft. This is a shaft lining method in which the lining is constructed by centrifugally projecting the lining material from the projection port by rotating the impeller while moving the position.

[0025] In this method, the movement of the base machine
Install the lining device on the inner wall of a shaft Close to
And lift it up and down while suspending it from the frame.
Setting the projection position with respect to the
While changing the projection direction by swinging the head,
Lining is performed by a certain width in the circumferential direction. (Contract
Claim 5)

According to the method of claim 5 , since the base machine is moved, the lining material is centrifugally projected by a constant width from the position where the lining device is brought close to the inner wall surface of the shaft while changing the projection direction of the projection opening. In addition, the lining can be applied to a shaft having a large diameter without shortage of the projection distance.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments to which the shaft lining apparatus and method of the present invention are applied will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a use state of the lining apparatus. FIG. 2 is a plan view, FIG. 3 is an overall front view showing a part of the lining device in cross section, FIG. 4 is a side view thereof, and FIG. 6 is a bottom view showing a rotary projection unit of the lining device with a bottom plate removed, and FIG. 7 is a plan view showing a main portion including a drive mechanism of the lining device. is there.

As shown in FIGS. 1 and 2, this lining device 1 is mounted in a suspended state on the tip of a boom 3 of a self-propelled base machine 2 such as a shovel excavator performing excavation work at the bottom of a shaft 4. Then, the projection lining material 6 is rotationally projected on the excavated inner wall surface 5 while moving the position in the vertical and horizontal directions along the inner wall surface 5 in a state of being close to the inner wall surface 5 of the excavated shaft. The lining 7 for earth retaining is constructed.

The projection lining material 6 is supplied from a bucket 8 from the ground.
The lining material sequentially supplied to the concrete pump 9 is pumped from the concrete pump 9 to the lining device 1 via the hose 10, and the lining material supplied from the quick setting agent supply device 11 mounted on the base machine 2 via the hose 12. It is made by kneading a binder.

As shown in FIGS. 3 to 5, the lining device 1 includes a frame portion 1A for supporting each portion, a suspension mechanism portion 1B for mounting the frame portion 1A to a boom 3 of a self-propelled base machine 2, a lining device, A material introduction section 1C for supplying the material 6a and the quick-setting agent 6b, the lining material 6a and the quick-setting agent 6
stir-mixing unit 1 for kneading b to produce projection lining material 6
D, a rotating projection unit 1E for rotating and projecting the projection lining material 6 on the inner wall surface 5 of the shaft 4 and lining, and a stirring and mixing unit 1
D and a rotation driving unit 1F that rotationally drives the rotation projection unit 1E;
It comprises a lifting mechanism 1G that raises and lowers each of the above-mentioned 1C, 1D and 1E with respect to the frame 1A.

The frame portion 1A is provided with four pillars 13 and 14 erected at the four corners arranged on the front and rear left and right, between the left and right pillars 13 and 13, between the pillars 14 and 14 on the upper end side, and between the front and rear pillars. Each upper connecting member 1 to be connected between 13 and 14
Each of the lower connecting members 17, 17, which is connected between the front and rear struts 13, 14 at the lower end side, is formed in a rectangular frame shape.

[0032] Each post 13.14, together with the telescopic strut 18, 19 from the lower end side of the opening in the hollow is linked in the fitted state, a plurality of pin holes in the inner and outer posts, each telescopic strut 1
8 and 19 can be pulled out to a desired length, the pin holes can be aligned, the locking pin 20 can be inserted, and the connection in the desired length can be fixed.

The suspension mechanism 1B is provided with connecting portions 21, 22, 23 on each of the upper connecting members 15, 16 of the frame portion 1A, and the connecting portions 21, 22, 23 are used to suspend chains, wire ropes or the like. One ends of the strings 24 and 25 are connected, and a hook (not shown) such as a hook detachable from the end of the boom 3 of the base machine 2 is attached to the other ends of the hanging strings 24 and 25. .

The material introduction section 1C has a frame 1 on the base side.
A to which the hose 10 from the concrete pump 9 is connected at the distal end and which is supported by A
And a telescopic cylinder in which a large-diameter cylinder is fitted to the outer periphery of a small-diameter cylinder sequentially
The upper end is the base side of the inlet pipe 26 and the lower end is the stirring and mixing unit 1D.
And an extension tube 28 connected to the stirring tube 27 and a hose 1 connected to the stirring tube 27
2 is provided with an inlet pipe 29 for the quick-setting agent 6b to be connected.

The extension cylinder 28 is connected to the stirring cylinder 27 and the flange part so as to be detachable from each other by attaching bolts 30. By operating the lifting / lowering mechanism 1G, the stirring / mixing unit 1D is operated.
The length of the flow path can be changed by the expansion and contraction of the telescopic cylinder when it is raised and lowered. However, when it is removed from the stirring cylinder 27 at the time of periodic inspection or cleaning, the flow path lengthens and becomes obstructive. In order to lock, a locking portion 31 provided on the outermost cylinder and a locking portion 32 provided on the upper connecting member 15 are connected by a hanging string 33 such as a chain or a wire rope.

The stirring and mixing section 1D has a stirring rotation shaft 34 disposed at the axis of a vertically long cylindrical stirring tube 27, and a predetermined rotation along the circumferential direction and the axial direction on the outer periphery of the stirring rotation shaft 34. A plurality of stirring rods 35 are projected radially at intervals, each tip of each stirring rod 35 is kept at a predetermined interval with respect to the inner surface of the stirring cylinder 27, and the lower end side of the stirring rotation shaft 34 is rotationally projected. It is connected and supported on the part 1E side.

At the upper end side of the stirring rotation shaft 34, the tip of the introduction pipe 29 for the quick-setting agent 6b is inserted, and the quick-setting agent introduction chamber 3 is inserted.
6, a conical cylindrical body 37 is formed.
In order to stir the lining material 6a flowing from the material introduction portion 1C side via the extension tube 28, a plurality of (for example, four) radially protruding blade plates 38 are protrudingly provided on the outer periphery of the nozzle 7 and are suddenly provided. At the outlet side of the binder introduction chamber 36, a quick binder introduction chamber 36 is provided.
In order to uniformly disperse the quick setting agent 6b from the inside of the stirring cylinder 27, a plurality of (for example, four) blade plates 39 protruding radially are provided in a protruding manner.

The number of the stirring rods 35 is four or more at predetermined intervals in the axial direction of the stirring rotation shaft 34, for example, by changing the protruding angle by 90 degrees, for example (in this embodiment, twelve stirring rods are provided at intervals of 30 degrees). ) Is arranged, and its tip is preferably protruded to a position close to, for example, about 2 to 5 mm with respect to the inner peripheral surface of the stirring cylinder 27.

The rotary projection unit 1E is a disk-shaped top plate 40 into which the lower end of the stirring rotary shaft 34 is inserted from the central opening.
And a lower plate 42 having a disc-like shape and a bottom cover 41 attached to a central opening portion are vertically arranged at predetermined intervals via a hollow spacer 43 so as to face each other. Between them, there is provided an impeller 45 provided with a plurality of (for example, four) blade plates 44 radially at predetermined intervals along the circumferential direction.

[0040] The impeller 45, connecting cylinder 4 with the lower end of the stirring rotary shaft 34 through the bottom cover 41 is connected to the lower plate 42, a connecting screw 46 which is inserted into the spacer 43
7 is connected to the rotation drive unit 1F by attaching the lower end thereof.

As shown in detail in FIG. 6, an endless belt 48 that is wound around the outer peripheral surface of the impeller 45 in a state where the projection direction F is released, as a configuration that constitutes the rotary projection unit 1E in cooperation with the impeller 45. , A plurality (for example, five) arranged around the outer periphery of the impeller 45 to guide the endless belt 48
The endless belt 48 is provided with a projection for preventing the endless belt 48 from slipping, and a roller 49 is provided on the flat belt. 49 is provided with a groove in which the projection is fitted.

The projection 53 is provided with a guide member 54 for restricting the flow path.
One of the rollers 49 allows the pivot shaft 50 to move within the slot 55 and is provided with a spring 56 for resiliently biasing the guide roller 51, thereby tensioning the endless belt 48, The attachment / detachment operation when exchanging the endless belt 48 is facilitated.

As shown in detail in FIG. 7, the rotary drive section 1F is disposed around the stirring and mixing section 1D,
7 are attached to a base 57 in a manner to pass through the center, and on this base 57, two rotary projection motors 58 (58A, 5A) serving as rotary driving sources such as the stirring shaft 34 and the impeller 45 are provided.
8B), and one direction control motor 59 serving as a rotational drive source of the direction control plate 52 is mounted.

The motor 58 includes an endless belt 61 (61) having one end wound around a step pulley 60 mounted on a rotating shaft.
A, 61B) is wound around a pulley groove 63 of a connecting cylinder 47 rotatably mounted on the outer periphery of the stirring cylinder 27 via a bearing member 62 around the stirring cylinder 27, and the endless belt 61 is rotated by the rotation of the motor 58. When the connecting cylinder 47 rotates through the
45, the stirring shaft 34, the blades 38, 39, and the endless belt 4 connected to the impeller 45.
8 is driven to rotate.

The motor 59 is provided with a transmission cylinder 66 mounted on the direction control plate 52 and disposed on the outer periphery of the stirring cylinder 27 by mounting the other end of an endless chain 65 having one end wound around a sprocket 64 mounted on a rotating shaft. The transmission cylinder 66 is rotatably supported by a guide roller 69 mounted on a base 57 via an annular flange 70 through an annular flange 70, and is endlessly rotated by a motor 59. Chain 65
When the transmission cylinder 66 is rotated via the transmission cylinder 66, the direction control plate 52 connected to the transmission cylinder 66 is rotationally driven.

[0046] The rotation driving unit. 1F, agitation cylinder rotation projection motor 58 and one-machine direction control motor 59 of the two aircraft 27
In order to reduce the size of the device and maintain the weight balance during suspension, the use of two rotary projection motors 58 makes it possible to use a small motor, The tension of the belt with respect to the cylinder 27 can be offset, and the power can be transmitted well.

The rotary projection motor 58 is connected to the connecting cylinder 47.
The impeller 45 is rotated through the
The rotation of the agitating rotation shaft 34 connected coaxially with the motor is reduced, so that the number of motors used can be reduced and the synchronous rotation of both motors can be performed smoothly. Endless endless belt 48
Is configured to be driven and rotated when the impeller 45 is rotated, so that the impeller 45 is smoothly rotated by being supported by the roller 49 and the endless belt 48 and a large load is not applied to the endless belt 48. Does not require strength.

The lifting mechanism 1G includes hooks 71 provided on the upper connecting members 15 and 16 of the frame 1A.
Lock 2 and attach 2 chain blocks 73,
Chain 7 pulled out from this chain block 73
4 is fixed to a locking plate 75 attached to the base 57 at a position where the weight balance is maintained, and the excess chain 74 is stored in an attached chain bag 76.

When the motor incorporated in the chain block 73 is driven to rotate, the lifting / lowering mechanism 1G is driven by the stirring / mixing unit 1D, the rotary projection unit 1E, and the rotary driving unit via the base 57 suspended from the chain 74. 1F is raised and lowered,
In conjunction with this, the extension tube 28 expands and contracts, and
Although C is also raised and lowered, a mechanism is provided for using the lifting mechanism 1G to roll over the stirring and mixing unit 1D, the rotary projection unit 1E, and the rotary drive unit 1F.

In this mechanism for turning over, the support cylinder 77 is provided at a position where the weight balance is deviated from the suspended position of the locking plate 75 and the weight balance is lost.
A locking shaft 78 whose tip is loosely fitted therein is provided, the locking shaft 78 is removed when performing a lifting operation in a suspended state, and the locking shaft 78 is inserted when cleaning or overhauling. At the same time, when the mounting bolt 30 is removed, the extension tube 28 separated from the stirring tube 27 is held by the hanging string 33, and the chain 74 is sequentially drawn out from the chain block 73, the base 57 is turned around the support tube 77 as a fulcrum.

[0051] Note that the configuration other than the above, the control panel 79 is incorporated a control unit for the driving portion is attached to the frame portion 1A, the wiring of the power and signal lines from the control panel 79 to the respective drive parts In addition, the lifting mechanism 1G in the above configuration can use a winch instead of a chain block.

Next, when the operation of the lining device 1, the lining material 6a liquidity supplied to the stirring cylinder 27 of the agitating mixer 1D via an extension tube 28 from the material introduction portion 1C side, agitation cylinder A slat 38 rotating within 27
The powder (which may be a liquid) quick-setting agent supplied to the quick-setting agent introduction chamber 36 through the introduction pipe 29 by being scattered in the radial direction, struck against the inner peripheral surface of the stirring cylinder 27 and extended, and supplied through the introduction pipe 29. 6b
Is added in a dispersed state on the lining material 6a which is scattered in the radial direction by the rotating blades 39 and adheres to the inner peripheral surface of the stirring cylinder 27.

[0053] This effectively can be added in a short time in the lining material 6a with a small amount of quick-setting admixture 6b, throughout the mixed state of the quick-setting admixture 6b against the lining material 6a The projection lining material 6 uniformly dispersed can be obtained, and the generation of dust can be reduced.

The projection lining material 6 in which the quick-setting agent 6b is added to the lining material 6a is sequentially lowered by gravity toward the stirring rotation shaft 34 provided with the stirring rod 35, while the stirring cylinder 27 is moved downward by the projection lining. The effective cross-sectional area is formed sufficiently wide with respect to the amount of the material 6, and the stirring lining material 6 descending in a coarse state dispersed in the stirring cylinder 27 is rotated at high speed along a horizontal plane. After kneading while adding stirring and mixing with the rod 35, the mixture is transferred into the impeller 45 of the rotary projection unit 1E.

In the stirring and mixing by the stirring rod 35, the projection lining material 6 which has been stirred and mixed by being cut by the stirring rod 35 scatters and is hit against the inner surface of the stirring cylinder 27 and flows in a spread state. A part of the attached projection lining material 6 is mixed and stirred again by being scraped off by the tip of the stirring rod 35, and by repeating this, the rotary projection unit 1 is rotated.
Transferred sequentially to E side.

[0056] projected in agitation cylinder 27 lining material 6
The transfer speed is particularly affected by the rotation speed of the stirring rod 35, and is important in determining the kneading residence time which affects the properties of the projection lining material 6, but the rotation speed of the stirring rod 35 is controlled as desired. By doing so, an appropriate kneading residence time can be set.

[0057] Further, according to the configuration of the stirring and mixing unit 1D, as compared with the case of mixing and stirring of the prior by the screw conveyor or the like has various advantages, for example because the screw conveyor is lining material kneaded by by dense state, local It may cause unevenness and uniform mixing and stirring may not be obtained, or there may be local stagnation and solidification, which also requires large power to rotate the screw conveyor under high load conditions On the other hand, when the lining material is dispersed and coarsely kneaded with the stirring rod 35 rotating at a high speed as in the stirring and mixing section 1D, the stirring and mixing acts uniformly on the entire lining material, and the local The stagnation rod 35 does not solidify due to stagnation, and is kept under light load.
Does not require large power because it is rotated.

Further , when the operation is stopped, in the case of a screw conveyor, the lining material remains inside. Therefore, complicated work is required to remove the lining material. However, the stirring and mixing section for transferring the lining material by gravity is required. In the case of 1D, the lining material in the impeller 45 does not fall into the impeller 45 and remains in the stirring cylinder 27, and the lining material in the impeller 45 is discharged to the outside by idling with the supply of new material stopped. The transfer line is not blocked by the consolidation of the remaining lining material.

The projection lining material 6 transferred to the rotary projection unit 1E is housed in an impeller 45 whose outer periphery is surrounded by an endless belt 48 and is divided by a blade 44, and receives centrifugal force by the rotating impeller 45. While being accelerated and scattered in the tangential direction, it is rotationally projected in the projection direction F so as to be pushed out by the blade plate 44 from the projection port 53 released from the endless belt 48.

[0060] The arrangement of the agitation cylinder 34 and the impeller 45,
Since the length of the machine is shortened so that the lower end side of the stirring cylinder 34 is housed in the impeller 45, the transfer of the projection lining material 6 can be performed smoothly, and the time until the projection can be reduced. It also contributes to preventing caking.

[0061] Further, the projection direction F of the projection liner 6
Is determined by the position of the projection port 53 released from the endless belt 48 and is not affected by the rotating impeller 45, so that accurate lining can be performed while the projection direction F is kept constant. At the same time, the direction control plate 52 is rotated by the direction control
The projection direction F can be changed by moving the position of. Therefore, it is possible to select a constant projection direction F for lining, or to perform continuous lining while swinging within a swing angle range.

When the lining 7 is constructed on the inner wall surface 5 of the shaft 4 using the lining device 1, excavation of a predetermined depth is performed and the excavation is performed at the end of the boom 3 of the base machine 2 such as a shovel excavator at the bottom of the shaft. On the other hand, the lining device 1 is suspended via a locking tool provided at the tip of the suspension string 24, 25, and the projection lining material 6 is projected from the rotary projection unit 1E at a position close to the inner wall surface 5 to be lined. The lining 7 is applied.

At this time, the height direction H depends on the excavation depth.
, The chain block 73 of the lifting mechanism 1G is operated, and the stirring / mixing unit 1D, the rotary projection unit 1E, and the rotation drive unit 1 are driven through the base 57 suspended from the chain 74.
F is raised and lowered, and the extension cylinder 28 of the material introduction section 1C is expanded and contracted to respond. By operating the direction control motor 59 in the circumferential direction W, the position of the projection port 53 of the impeller 45 is changed. It is possible to respond by changing the projection direction F.

In this lining operation, the elevation mechanism 1G moves up and down in the height direction H, and the projection port 53 by the direction control motor 59 in the circumferential direction W.
By setting the position, accurate positioning can be performed respectively and high quality lining can be constructed, and it can be applied not only to lining for vertical planes and curved surfaces, but also to lining for recesses of digging surfaces and lining for inclined surfaces .

In the lining device 1, the lining is performed by projecting a fixed width from the position close to the inner wall surface 5 to be lined by moving the base machine 2 while changing the projection direction F by the projection port 53. Since it is possible, the projection distance is not short for a shaft having a large diameter as in the previously proposed apparatus.

For the lining of a shaft with a small diameter, the base machine 2 is installed at the center of the shaft 4, and the boom 3 rotates to continuously rotate the position of the projection port 53, and the entire periphery of the shaft 4 is rotated. In this case, the lining work is not hindered as in the proposed device in which the lining is constructed by suspending from the ground.

Further , since the quick-setting agent 6b is scattered in a dispersed state with respect to the lining material 6a immediately after being introduced into the stirring and mixing section 1D, the quick-setting agent 6b can be shortened as compared with the previously proposed rotary projection type. Kneading can be performed uniformly over time, and the lining effect can be significantly improved by rotationally projecting the projection lining material 6.

[Brief description of the drawings]

FIG. 1 is a front view showing a use state of a lining device to which the present invention is applied.

FIG. 2 is a plan view showing a use state of the lining device.

FIG. 3 is an overall front view showing a part of the lining device in cross section.

FIG. 4 is an overall side view showing a part of the lining device in cross section.

FIG. 5 is an enlarged front view of a main part of FIG. 3;

FIG. 6 is a bottom view showing the rotary projection unit of the lining device with its bottom removed.

FIG. 7 is a plan view showing a main part including a drive mechanism of the lining device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical shaft lining apparatus 1A Frame part 1B Suspension mechanism part 1C Material introduction part 1D Stirring / mixing part 1E Rotary projection part 1F Rotation drive part 1G Lifting mechanism part 2 Base machine 3 Boom 4 Vertical shaft 5 Inner wall surface (of vertical shaft) 6 Projection lining Material 6a Lining material 6b Quick setting agent 7 Lining 8 Bucket 9 Concrete pump 10,12 Hose 11 Quick setting agent supply device 13,14 Column 15,16 Upper connecting member 17 Lower connecting member 18,19 Telescopic column 20 Locking pin 21, 22, 23 Connecting portion 24, 25, 33 Suspension cord 26 (Introduction material of lining material) 27 Stirring tube 28 Extension tube 29 (Introduction of quick-setting agent) 30 Introducing tube 30 Mounting bolt 31, 32 Locking portion 34 Stirring rotary shaft 35 Stirring rod 36 Quick setting agent introduction chamber 37 Conical cylindrical body 38, 39, 44 Blade plate 40 Top plate 41 Bottom plate 4 Lower plate 43 Spacer 45 Impeller 46 Connection screw 47 Connection cylinder 48, 61 Endless belt 49 Roller 50 Pivot shaft 51 Guide roller 52 Direction control plate 53 Projection port 54 Guide member 55 Slot 56 Spring 57 Base 58 Rotation / projection motor 59 Direction control motor 60 Step pulley 62 Bearing member 63 Pulley groove 64, 67 Sprocket 65 Endless chain 66 Transmission tube 68 Support shaft 69 Guide roller 70 Annular flange 71 Hook receiver 72 Hook 73 Chain block 74 Chain 75 Lock plate 76 Chain bag 77 Support tube 78 Lock shaft 79 Control panel

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeru Suzuki 2-4-4 Nishikicho, Tachikawa-shi, Tokyo (56) References JP-A-9-256790 (JP, A) JP-A-7-180496 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 5/00 E21D 11/10 B05C 5/00

Claims (3)

(57) [Claims] 1. A frame section for supporting each section, a suspension mechanism section for mounting the frame section on a boom of a base machine installed at a bottom of a pit, a material introduction section for supplying a lining material and a quick-setting agent, and a lining material. A stirring and mixing unit that kneads the quick-setting agent with the quick-setting agent to produce a projection lining material, and a rotary projection unit that rotationally projects the projection lining material on the inner wall surface of the shaft using an impeller,
Providing a stirring and mixing unit and a rotation drive unit for rotationally driving the rotary projection unit, the stirring and mixing unit is equipped with a stirring and rotating shaft in which a stirring rod is radially projected at the axis of a vertically arranged stirring tube, and For the lining material and the quick-setting agent supplied from the upper end side of the stirring cylinder via the introduction section, while rotating the stirring rotation shaft with the rotation projection motor provided in the rotation drive section and kneading with the stirring rod, The kneaded projection lining material is provided with a structure for sequentially transferring the material to the lower end side by gravity, the rotary projection unit is mounted on the lower end side of the stirring cylinder with an impeller equipped with a plurality of blades, around the outer periphery of the impeller Arranges a plurality of rollers pivotally attached to the direction control plate,
An endless belt is wound around the outer peripheral surface of the impeller and each roller in a manner to release a projection port, the impeller is driven to rotate by the rotary projection motor, and the stirring rotation shaft and the endless belt are rotated in conjunction with each other. The interlocking rotation of the endless belt is guided by the rollers, the direction control plate is rotated by a direction control motor, and the position of the projection port with respect to the impeller can be changed. A conical cylindrical body forming a quick-setting agent introduction chamber is provided at the upper end side of the stirring rotation shaft, and a plurality of sheets that project radially on the outer periphery of the conical cylindrical body and scatter the lining material on the inner surface of the stirring cylinder are provided. In addition to providing a wing plate
A shaft lining device comprising: a plurality of blades that are radially protruded from an outlet side of a quick-setting agent introduction chamber to scatter the quick-setting agent to an inner surface of a stirring cylinder. 2. A frame section for supporting each section, a suspension mechanism section for mounting the frame section on a boom of a base machine installed at the bottom of a pit, a material introduction section for supplying a lining material and a quick-setting agent, and a lining material. A stirring and mixing unit that kneads the quick-setting agent with the quick-setting agent to produce a projection lining material, and a rotary projection unit that rotationally projects the projection lining material on the inner wall surface of the shaft using an impeller,
Providing a stirring and mixing unit and a rotation drive unit for rotationally driving the rotary projection unit, the stirring and mixing unit is provided with a stirring and rotating shaft having a stirring rod projected radially at an axis of a vertically arranged stirring tube, and For the lining material and the quick-setting agent supplied from the upper end side of the stirring cylinder via the introduction section, while rotating the stirring rotation shaft with the rotation projection motor provided in the rotation drive section and kneading with the stirring rod, The kneaded projection lining material is provided with a structure for sequentially transferring the material to the lower end side by gravity, the rotary projection unit is mounted on the lower end side of the stirring cylinder with an impeller equipped with a plurality of blades, around the outer periphery of the impeller Arranges a plurality of rollers pivotally attached to the direction control plate,
An endless belt is wound around the outer peripheral surface of the impeller and each roller in such a manner as to release a projection opening, the impeller is driven to rotate by the rotary projection motor, and the stirring rotation shaft and the endless belt are rotated in conjunction with each other. The configuration is such that the interlocking rotation of the endless belt is guided by the rollers, the direction control plate is rotated by a direction control motor, and the position of the projection port with respect to the impeller can be changed. And a base on which the rotation drive unit is mounted, and an elevating mechanism for suspending and elevating the base from the frame, and connecting an extension tube which expands and contracts following the elevating to the upper end of the stirring tube. A shaft lining device provided in the material introduction part in an aspect. 3. The base is detachably engaged with the frame at a position where the weight is unbalanced, and the stirring tube and the extension tube are detachably connected to each other, and the base is connected to the frame. When the suspension of the elevating mechanism is loosened in a state where the stirring tube is removed from the extension tube while stopping, the stirring and mixing unit mounted on the base, the rotating projection unit and the rotating drive unit roll over. The lining device for a shaft according to the above.