JP5214431B2 - Work apparatus for construction and peeling method of peeled member - Google Patents

Description

  The present invention relates to a construction work apparatus that can easily scrape off a member to be peeled adhered to the surface of a support and a method for peeling the member to be peeled, and is an apparatus and method suitable for scraping concrete.

  In general, since the support is long and has an arch shape along the tunnel wall, in order to carry it into the tunnel, carry it in a vertical posture with its longitudinal direction along the tunnel depth direction. Although it is convenient, this support is built along the wall in a lateral orientation along the tunnel width direction.

  For this reason, in the past, the necessary number of support works were loaded into the tunnel in a vertical orientation using a dedicated carrier cart, etc., and unloaded near the erection position. After changing the posture, this transport cart was replaced with an erection cart for erection work, and the support work was sequentially built by this erector cart.

  As the supporter is carried in and built, the transport cart and the erector trolley, which are separate work trolleys, are exchanged in the tunnel. The support work was gripped by the gripping part installed at the tip of the erector boom of the erector trolley, and installed at a predetermined position in the tunnel. At this time, if the support can not be securely gripped by the gripping portion, work for gripping the support again in the narrow and poor workability tunnel is required, and as a result, it takes a lot of time. There was a big work loss.

On the other hand, H steel having a H-shaped cross section is usually used as a support, but there are various sizes, and it is possible to reliably support these various sizes with a single grip. it is difficult to grasp. That is, when the height H1 of the pair of gripping claws 112 and 114 constituting the gripping portion 110 is increased as shown in FIG. 9 (A) in order to correspond to the support work W having a height dimension H of 250 mm, When gripping the supporting work W having a height dimension H of 125 mm, the spacer 116 has to be inserted as shown in FIG.

  On the other hand, when the height H1 of the pair of gripping claws 112 and 114 is lowered as shown in FIG. 9C, when the support W having a height H of 250 mm is gripped, Only the lower end side is sandwiched. Along with this, as a result of the opposing surfaces 112A and 114A of the pair of gripping claws 112 and 114 being parallel to each other, the support W slides between the gripping claws 112 and 114, as indicated by a two-dot difference line. Since the work W is detached and an operation for gripping the support work again is necessary, there is a disadvantage that a large work loss occurs as described above.

At this time, it is conceivable to attach the rubber material to the opposing surfaces 112A and 114A of the pair of gripping claws 112 and 114. In this case, the durability of the rubber material increases as a large force is applied to the rubber material. However, it was not practical because it was low. From this, it can be considered that the gap between the pair of gripping claws facing the support is narrowed from the proximal end side to the distal end side of the pair of gripping claws.
Japanese Patent Laid-Open No. 10-26000 JP 2007-56585 A

  On the other hand, after the support work is built in the tunnel, concrete is sprayed on the inner surface of the tunnel including this support work. At this time, the concrete also adheres to the inner peripheral surface of the support work. Thus, this part protrudes from the inner peripheral surface of the tunnel. Then, after the concrete spraying process, there is a process for sticking the waterproof sheet to the inner surface of the tunnel, but if there is a portion protruding from the inner peripheral surface of the tunnel as described above, It becomes difficult to paste well on the inner peripheral surface of the tunnel.

Therefore, in the past, the inner peripheral surface of the tunnel was smoothed by scraping off excess concrete adhering to the surface of the support with a large spatula or scraping off excess concrete with the back surface of the backhoe bucket. These means have disadvantages such as inefficiency and difficulty in scraping off concrete that is a member to be peeled off.
In consideration of the above-described facts, an object of the present invention is to provide a construction work apparatus and a method for peeling a member to be peeled that can easily scrape off a member to be peeled adhered to a surface of a support work.

The construction work device according to claim 1 includes a boom extending from the main body member,
A gripping part that is attached to the tip of the boom and grips the support work;
A construction work device having
The gripper was detachably mounted by gripping the base end side of the scraper having a claw portion on the tip side that can peel the member to be peeled.

The operation of the construction work apparatus according to claim 1 will be described below.
According to the construction work device of the present claim, the grip portion is attached to the tip side of the boom extending from the main body member, and the grip portion grips the support work. For example, the support is built in a tunnel that is gripped by a gripping portion, and concrete is sprayed on the inner surface of the tunnel including the built support.

On the other hand, the gripper grips the base end side of the scraper having the claw portion on the distal end side, so that the scraper can be detachably attached to the grip portion on the distal end side of the boom.
Therefore, according to the construction work apparatus of the present claim, for example, the concrete which is a member to be peeled that adheres to the support work excessively as the concrete is sprayed on the inner surface of the tunnel is operated by operating the boom. It can be easily peeled off by a scraper attached to the tip of the boom, and the concrete can be scraped off from a support work or the like.

The construction work device according to claim 2 includes an erector boom extending from the main body member,
A gripping part that is attached to the tip side of the erector boom and grips the support work;
A construction work device having
The gripping portion has a pair of gripping claws that sandwich the support work by changing the interval by the power of the drive source,
The base end side of the scraper having a claw portion that can peel the member to be peeled on the distal end side was detachably gripped between the pair of gripping claws.

The operation of the construction work apparatus according to claim 2 will be described below.
According to the construction work device of this claim, the gripping portion is attached to the tip side of the erector boom extending from the main body member, and the pair of gripping claws of the gripping portion is supported by changing the interval by the power of the driving source. By sandwiching, the gripping part grips the support work. Then, the support is built in the tunnel by being gripped by the grip portion, and concrete is sprayed on the inner surface of the tunnel including the built support.

On the other hand, the scraper can be attached to the grip portion on the distal end side of the erector boom by detachably gripping the base end side of the scraper having the pawl portion on the distal end side between the pair of grip claws.
Therefore, according to the construction work device of this claim, the concrete to be peeled off, which is attached to the support work as the concrete is sprayed on the inner surface of the tunnel, is operated by operating the erector boom. It can be easily peeled off by a scraper attached to the tip side of the erector boom, and the concrete can be scraped off from a support work or the like.

The operation of the construction work apparatus according to claim 3 will be described below.
The construction work apparatus according to the present invention has the same effect as that of the second aspect. However, the present invention has a configuration in which the gap between the pair of gripping claws facing the support work is formed so as to become narrower from the proximal end side to the distal end side of the pair of gripping claws. doing.

  That is, according to this claim, since the gap between the portions facing the support of the pair of grip claws becomes narrower from the base end side to the tip end side of the pair of grip claws, When gripping the handle, a force acting from the distal end side to the proximal end side of the grip claw is always applied to the support work sandwiched between the pair of grip claws.

  As a result, even if the size of the support is changed, there is no possibility that the support is shifted from the proximal end side to the distal end side of the pair of gripping claws. According to the working device, the support work can be securely gripped when the support work is installed in the tunnel construction.

The operation of the construction work apparatus according to claim 4 will be described below.
The construction work apparatus according to the present invention has the same effects as those of the second and third aspects. However, in this claim, the drive unit has a built-in drive unit, and an extendable piece extending from the drive unit so as to extend and retract is provided. The other end of the gripping claw is installed, and a pair of flange portions are provided on the base end side of the scraper so as to extend side by side. The side is detachably gripped.

  In other words, according to the present invention, one of the pair of gripping claws is installed in the drive unit incorporating the drive source, and the other of the pair of gripping claws is installed in the extendable piece that extends and contracts from the drive unit. . Then, the scraper is detachably gripped between the pair of gripping claws with a pair of flange portions provided so as to extend side by side on the base end side of the scraper so that the scraper is detachable. It will be firmly fixed to the holding part. As a result, the concrete scraping operation can be performed without considering the removal of the scraper from the gripping portion.

The peeling method of the member to be peeled according to claim 5 includes an erector boom extending from the main body member,
A gripping part attached to the tip side of the erector boom and having a pair of gripping claws that sandwich the support work by changing the interval by the power of the drive source;
A method for peeling a member to be peeled using a construction work device having
After sandwiching between the pair of gripping claws of the gripping part and moving the support work and installing it in the tunnel,
Concrete is sprayed on the inner surface of the tunnel so as to cover the support work.
Next, a scraper having a claw portion that can peel the member to be peeled on the tip side is attached between the pair of gripping claws, and excess concrete is peeled off by the scraper.

The effect | action of the peeling method of the to-be-peeled member which concerns on Claim 5 is demonstrated below.
In the peeling method of the member to be peeled according to the present invention, a gripping portion is attached to the tip end side of the erector boom extending from the main body member, and the pair of gripping claws of the gripping portion is supported by changing the interval by the power of the driving source. It is applied when using the construction work device in which the gripping part grips the support work by sandwiching.

  Then, after the support work is installed in the tunnel by being pinched by a pair of gripping claws of the gripping part, the inner surface of the tunnel including the support work that is gripped by the gripping part and built in the tunnel is included. Spray concrete. After that, a scraper with a claw part that can peel off the member to be peeled is attached between the pair of gripping claws, and the erector boom is operated to peel off the excess concrete sprayed on the inner surface of the tunnel with this scraper. To do.

  Therefore, according to the peeling method of the member to be peeled of this claim, the concrete which is the member to be peeled as if the concrete was sprayed on the inner surface of the tunnel and adhered to the supporter in the same manner as in the second aspect. By the operation of the erector boom, the scraper attached to the tip side of the erector boom can be easily peeled off, and the concrete can be scraped off from the support work or the like.

The effect | action of the peeling method of the to-be-peeled member which concerns on Claim 6 is demonstrated below.
The peeling method of the member to be peeled according to the present invention has the same effect as that of the fifth aspect. However, in this claim, the drive unit has a built-in drive unit, and an extendable piece extending from the drive unit so as to extend and retract is provided. The other end of the gripping claw is installed, and a pair of flange portions are provided on the base end side of the scraper so as to extend side by side. By gripping the side, the scraper is mounted between the pair of gripping claws.

  That is, according to the present claim, the scraping operation of the concrete can be performed without considering the removal of the scraper from the gripping portion, similarly to the fourth aspect.

  As described above, according to the above-described configuration of the present invention, it is possible to provide an excellent effect that it is possible to provide a construction work device that can easily scrape off a member to be peeled adhered to the surface of a support work and a method for peeling the member to be peeled. Have.

1 to 8 show an embodiment of a construction work device and a method for peeling a member to be peeled according to the present invention, and this embodiment will be described based on these drawings.
As shown in FIGS. 1 and 2, the erector carriage 10 on which the construction work device according to the present embodiment is mounted has a trolley body 12 that can be driven by a crawler driven by a power source. In this structure, the bogie main body 12 is equipped with various facilities.

  That is, a robot boom 14, erector booms 16 and 18, and basket booms 20 and 22, which are a total of five telescopic booms that can extend and retract in a plurality of stages by a telescope structure, are supported on the front end portion of the carriage body 12. . Each stage of these five telescopic booms is expanded and contracted by a hydraulic cylinder (not shown) interposed in each stage.

  These robot boom 14, erector booms 16 and 18, and basket booms 20 and 22 are swingable in the vertical and horizontal directions with the base end side as a fulcrum, and can be swung around the axis. The swinging operation and the turning operation in the direction are performed by expansion and contraction of a hydraulic cylinder (not shown) provided in each direction. Further, an outrigger 24 is installed in the cart body 12, and the aircraft body can be stably held by using the outrigger 24 when each telescopic boom is used.

  Of the five telescopic booms, the robot boom 14 is for concrete spraying, and the two basket booms 20 and 22 are provided with decks 26 and 28, respectively, for operators to board. Yes. Accordingly, the basket booms 20 and 22 can be extended and retracted and swung in each direction, so that the deck 26 or the deck 28, and thus the worker on the deck 26, can be moved to any position in the vertical and horizontal directions. ing.

  On the other hand, the outer two erector booms 16 and 18 are used directly for support construction work, and the ends of the two erector booms 16 and 18 that are the booms are formed into an arch shape by a steel material. Supporting catchers 32 and 34 for holding the supporting works W formed on the respective parts are mounted. Since these two support catchers 32 and 34 are symmetrically configured, the support catcher 32 on the left side in the traveling direction of the elector cart 10 in FIG. 2 will be described below.

  That is, as shown in FIGS. 3 and 4, the support catcher 32 is attached to the L-shaped arm 40 extending from the tip of the erector boom 16 and the L-shaped corner portion of the L-shaped arm 40. And a gripping portion 42 attached to the distal end side. Three hydraulic cylinders 44A, 44B, and 44C are installed between the erector boom 16 and the L-shaped arm 40 or on the L-shaped arm 40 itself. The inclination of the L-shaped arm 40 itself and the L-shaped arm The inclination between the respective sides constituting 40 can be changed by these three hydraulic cylinders 44A, 44B, 44C.

  Furthermore, the base end portion of each gripping portion 42 is configured by a drive portion 42A that incorporates a hydraulic cylinder 48 that is a drive source, and an extendable piece 42B that extends and contracts from within the drive portion 42A is connected to the drive portion. As 42A is provided, the distal end side of the piston 48A of the hydraulic cylinder 48 is connected to the extendable piece 42B. A first gripping claw 51 is installed on the distal end side of the drive unit 42A, and a second gripping claw 52 is installed on the distal end side of the telescopic piece 42B facing the first gripping claw 51. The support work W is sandwiched between the first gripping claws 51 and the second gripping claws 52.

  That is, a pair of gripping claws are constituted by the first gripping claws 51 that are one of these gripping claws and the second gripping claws 52 that are the other gripping claws, and hydraulic oil is fed into the hydraulic cylinder 48 from the outside. When the hydraulic cylinder 48 is driven, the distance between the first gripping claws 51 and the second gripping claws 52 is changed, and the support work W is sandwiched.

  Further, the right end surface 51A in FIG. 4 that is the portion facing the support W of the first gripping claw 51 is inclined toward the support W side from the base end side toward the tip end side, and the inclination angle A1 is 80. Tilt in degrees. A chamfered portion 51B that serves as a relief portion is formed at the tip of the end surface 51A. Further, the left end surface 52A in FIG. 4 which is the portion facing the support work W of the second gripping claw 52 is inclined to the support work W side from the base end side toward the front end side, and the inclination angle B1 is 80. Tilt in degrees. A chamfered portion 52B that is a relief portion is similarly formed at the tip of the end surface 52A.

  That is, the inclination angles A1 and B1 of the end surfaces 51A and 52A that are the portions facing the support W of the pair of gripping claws 51 and 52 are the same, and the base ends of the pair of gripping claws 51 and 52 are the same. The gaps are formed so that the gap between them becomes narrower from the side toward the tip side. However, the height of the pair of gripping claws 51 and 52 is about 120 mm.

  On the other hand, as shown in FIGS. 6 and 7, the scraper 60 used in the present embodiment is formed in a triangular cylindrical shape by a metal material such as steel, and on the proximal end side of both cylindrical end portions. The structure is provided with a cutout portion 60B that cuts out these portions. And the claw part 60A which can peel the concrete C which is a to-be-separated member is formed in the acute angle at the front end side of the scraper 60 used as one top part of a triangle.

  Further, on the base end side of the scraper 60, a pair of flange portions 62A and 62B formed in the same shape as each other are provided side by side so as to extend leftward and rightward in FIG. . The distance between the pair of flange portions 62A and 62B is set to a size that matches the width of the base end side of the scraper 60 and that the stretchable piece 42B fits between them without rattling.

  Therefore, the scraper 60 used in the present embodiment is detachable between the pair of gripping claws 51 and 52 while the base end side of the scraper 60 is sandwiched between the pair of flange portions 62A and 62B when necessary. It is structured to be gripped.

Next, the procedure of the peeling method for the member to be peeled according to the present embodiment will be described below.
First, a large tunnel T shown in FIG. 5 is excavated in advance, and in this tunnel T, a pair of gripping claws 51 and 52 of a gripping portion 42 attached to the tip side of the erector booms 16 and 18 extending from the carriage main body 12 are used. The arch-shaped support works W are sandwiched and moved, and the support works W are installed in the tunnel T at a plurality of equal intervals, for example.

  Next, as shown in FIG. 5, concrete C is sprayed onto the tunnel inner surface TA in a state where a section where the support work W is installed for a predetermined length in the tunnel T is made. Concrete C will be sprayed to the tunnel inner surface TA in a form that covers the support work W built in T. Along with this, a protruding portion CP is formed in which the concrete C is excessively attached and protruded so that the inner peripheral portion of the support work W protrudes.

  After this, the pair of flange portions 62A and 62B of the scraper 60 sandwich the stretchable piece 42B in one gripping portion 42 of the two gripping portions 42 while contracting the stretchable piece 42B toward the drive portion 42A. 6 and 7, the scraper 60 is mounted between the pair of gripping claws 51, 52 of the gripping portion 42 by gripping the base end side of the scraper 60 between the pair of gripping claws 51, 52. At this time, the pair of gripping claws 51 and 52 enters the notch 60B of the scraper 60, and the pair of flange portions 62A and 62B can be gripped by the pair of gripping claws 51 and 52 without any problem.

  Then, the operator operates the erector booms 16 and 18 extending from the carriage main body 12 to move the scraper 60 along the tunnel inner surface TA, thereby spraying the tunnel inner surface TA as shown in FIGS. The protruding portion CP, which is the surplus concrete, is peeled off sequentially by the scraper 60.

  That is, when the concrete C is sprayed on the tunnel inner surface TA, the concrete C tends to be sprayed in a shape in which the inner peripheral side portion of the support W formed in the arch shape as described above protrudes. It can be considered that the scraper 60 peels off the protrusion CP, which is excess concrete C sprayed on the tunnel inner surface TA corresponding to the portion of the support work W.

Next, the operation of the construction work device and the peeling method of the member to be peeled according to the present embodiment will be described below.
According to the erector cart 10 on which the construction work device of the present embodiment is mounted, the gripping portion 42 is attached to the tip side of the erector booms 16 and 18 extending from the trolley body 2. Furthermore, the drive part 42A incorporates the hydraulic cylinder 48 of the grip part 42, and an extendable piece 42B extending from the drive part 42A so as to be extendable and retractable is provided. Along with this, the gripping portion 42 has a structure in which the gripping claw 51 is installed in the drive unit 42A and the gripping claw 52 is installed in the extendable piece 42B. As a result of the above, the pair of gripping claws 51 and 52 of the gripping part 42 change the interval by the power of the hydraulic cylinder 48 and sandwich the supporter W so that the gripper 42 grips the supporter W. Become.

  And this support work W is built in the tunnel T, hold | gripped by the holding part 42, and concrete C is sprayed on tunnel inner surface TA also including this built support work W. As shown in FIG. On the other hand, a scraper 60 provided with a pair of flange portions 62A and 62B extending side by side on the base end side is sandwiched between the pair of flange portions 62A and 62B and the elastic piece 42B is sandwiched between the pair of gripping claws 51 and 52. Attach so that the base end side is gripped. In other words, the base end side of the scraper 60 having the claw portion 60A on the front end side is detachably gripped between the pair of gripping claws 51, 52, so that at least one of the front ends of the erector booms 16, 18 A scraper 60 is attached.

  Therefore, according to the construction work apparatus and the method for peeling the member to be peeled according to the present embodiment, the concrete C is excessively attached to the support W as the concrete C is sprayed onto the tunnel inner surface TA. The protrusion CP can be easily peeled off and scraped off by the scraper 60 attached to the tip side of the erector booms 16 and 18 by the operation of the erector booms 16 and 18. That is, after that, the waterproof sheet is pasted on the inner peripheral surface of the concrete C which is flattened by peeling off the protrusion CP.

  Further, in the present embodiment, the scraper 60 is interposed between the pair of gripping claws 51 and 52 while the pair of flange portions 62A and 62B provided so as to extend side by side on the base end side of the scraper 60 and sandwiching the elastic piece 42B. The scraper 60 is firmly fixed to the grip portion 42 at the time of gripping by gripping the base end side of the gripper detachably. As a result, the concrete C can be scraped off without considering the removal of the scraper 60 from the grip portion 42.

  On the other hand, in the present embodiment, the inclination angles A1 and B1 of the portions of the gripping claws 51 and 52 facing the support work W and the scraper 60 are made the same between the pair of gripping claws 51 and 52. The pair of gripping claws 51 and 52 so that the gap between the portions facing the support work W of the pair of gripping claws 51 and 52 becomes narrower from the proximal end side to the distal end side of the pair of gripping claws 51 and 52. 51 and 52 are formed.

  In other words, the gap between the pair of gripping claws 51 and 52 facing the support W and the scraper 60 is narrowed from the proximal end side to the distal end side of the pair of gripping claws 51 and 52. When the support work W or the scraper 60 is gripped, the support work W or the scraper 60 sandwiched between the pair of grip claws 51 and 52 is moved toward the base end side from the distal end side of the grip claws 51 and 52. The power to work is always added.

  As a result, even if the size of the support work W changes, there is no possibility that the support work W shifts from the base end side to the front end side of the pair of gripping claws 51 and 52. According to the erector carriage 10 on which the construction work device according to the embodiment is mounted, the support work W can be securely gripped when the support work W is installed in tunnel construction.

  On the other hand, according to the present embodiment, the portion of the pair of gripping claws 51, 52 facing the support work W has a gap between the base end side of the pair of gripping claws 51, 52 toward the distal end side. In addition to simply narrowing, the inclination angles A1 and B1 of the portions of the pair of gripping claws 51 and 52 facing the support work W are the same between the pair of gripping claws 51 and 52, so The work W can be gripped more reliably.

  Further, according to the present embodiment, since the drive source is the hydraulic cylinder 48, a strong force is exerted by the hydraulic cylinder 48, and the support work W is more reliably performed by the grip portion 42 of the erector carriage 10. It can also be gripped.

Next, a specific example when gripping two types of support works W by the grip portion 42 of the construction work apparatus according to the present embodiment will be described. However, the following specific examples will be described using only a pair of gripping claws 51 and 52.
For example, when holding a support W having a height dimension H of 250 mm, it is held as shown in FIG. 8A, and when holding a support W having a height dimension H of 125 mm, It will be held as shown in FIG.

  That is, since the height of each of the pair of gripping claws 51 and 52 is about 120 mm, when gripping the support W formed in an H shape having a height dimension H of 250 mm, FIG. As shown in (), only the lower end side which is one end side of the support work W is gripped. Further, when holding the support W formed in an H shape having a height dimension H of 125 mm, one end of the support W is similarly held as shown in FIG. However, since chamfered portions 51B and 52B are formed in the portions of the gripping claws 51 and 52 facing the other end side of the support work W, in this case, the gripping claws 51 and 52 are provided on the other end side of the support work W. 52 does not touch.

  As a result of the above, in any case, only the lower end side that is one end side of the support work W is gripped, but there is a gap between the pair of gripping claws 51 and 52 facing the support work W. Since the pair of gripping claws 51, 52 are narrowed from the proximal end side toward the distal end side, a force acting from the distal end side to the proximal end side of the gripping claws 51, 52 is always applied, and the support work W Can be securely gripped.

  In the present embodiment, the construction working device according to the present invention is mounted on the erector carriage 10 in which concrete is sprayed on the inner surface of the tunnel by the robot boom 14 for spraying concrete. A scraper may be detachably attached to the tip of a boom extending from a carriage main body of another construction work device that is mounted on a vehicle used for work via a gripping portion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an erector carriage equipped with a construction work device according to an embodiment of the present invention. It is a top view of the erector trolley | bogie with which the working apparatus for construction which concerns on one embodiment of this invention was mounted. It is an enlarged front view of the holding part applied to one embodiment of the present invention. FIG. 4 is a view on arrow 4-4 in FIG. 3. It is sectional drawing of the tunnel with which one embodiment of this invention is applied. It is a figure corresponding to FIG. 4, Comprising: It is a figure which shows the state which attaches a scraper between a pair of holding claws, and peels the protrusion part of concrete. FIG. 7 is a view taken in the direction of arrow 7-7 in FIG. 3, showing a state in which a scraper is mounted between a pair of gripping claws and a concrete protrusion is peeled off. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the holding part applied to one embodiment of this invention, Comprising: (A) is a figure showing the case where the supporting work whose height is 250 mm is shown, (B) is 125 mm in height. It is a figure showing the case where a support work is held. It is a figure which shows the holding part of a prior art, Comprising: (A) is a figure showing the case where the height of 250 mm is supported, (B) is the case where the height of 125 mm is supported. It is a figure and (C) is a figure showing the case where the supporting work whose height is 250 mm is grasped with the structure where the grasping claw was made small.

10 Elector cart 12 Cart body (main body member)
16 Elector Boom 18 Elector Boom 32 Supporting Catcher 34 Supporting Catcher 42 Gripping Part 42A Drive Part 42B Telescopic Piece 48 Hydraulic Cylinder (Drive Source)
51 gripping claw 52 gripping claw 60 scraper 60A claw part 62A flange part 62B flange part C concrete (member to be peeled)
CP Protrusion W Support

Claims (6)

A boom extending from the body member;
A gripping part that is attached to the tip of the boom and grips the support work;
A construction work device having
A construction work device in which a scraper is detachably mounted by gripping a base end side of a scraper having a claw portion on the distal end side where a gripping portion can peel a member to be peeled. An erector boom extending from the body member;
A gripping part that is attached to the tip side of the erector boom and grips the support work;
A construction work device having
The gripping portion has a pair of gripping claws that sandwich the support work by changing the interval by the power of the drive source,
A construction work apparatus in which a base end side of a scraper having a claw portion that can peel off a member to be peeled at a distal end side is detachably gripped between the pair of gripping claws.   The construction work device according to claim 2, wherein a gap between the pair of gripping claws facing the support is narrowed from the proximal end side to the distal end side of the pair of gripping claws. The drive unit has a built-in drive source, and an extendable piece that extends and contracts from the drive unit is provided.
While one of the pair of gripping claws is installed in the drive unit, the other of the pair of gripping claws is installed in the telescopic piece,
On the base end side of the scraper, a pair of flange portions are provided extending in a row,
The construction work device according to claim 2 or 3, wherein the base end side of the scraper is detachably gripped between the pair of gripping claws while the elastic piece is sandwiched between the pair of flange portions. An erector boom extending from the body member;
A gripping part attached to the tip side of the erector boom and having a pair of gripping claws that sandwich the support work by changing the interval by the power of the drive source;
A method for peeling a member to be peeled using a construction work device having
After sandwiching between the pair of gripping claws of the gripping part and moving the support work and installing it in the tunnel,
Concrete is sprayed on the inner surface of the tunnel so as to cover the support work.
Next, a method for peeling a member to be peeled, in which a scraper having a claw part that can peel the member to be peeled on the distal end side is attached between a pair of gripping claws, and excess concrete is peeled off by the scraper. The drive unit has a built-in drive source, and an extendable piece that extends and contracts from the drive unit is provided.
While one of the pair of gripping claws is installed in the drive unit, the other of the pair of gripping claws is installed in the telescopic piece,
A pair of flange portions are provided on the base end side of the scraper so as to extend side by side,
The method for peeling a member to be peeled according to claim 5, wherein the scraper is mounted between the pair of gripping claws by gripping the base end side of the scraper between the pair of gripping claws while sandwiching the elastic piece between the pair of flange portions. .

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