KR20080056922A - Header for cutting conrete plate - Google Patents

Abstract

A header for cutting a concrete wall is provided to preventing dust from scattering in the air by spreading water as cutting the concrete wall. A header for cutting a concrete wall comprises a connection frame(12), a cutter frame(14), and a rotating drum(16) having a plurality of cutters(15). The connection frame include two support plates(17) and a connection plate(18). The connection plate connects the support plates with each other. The connection frame changes coupling direction of a concrete cutter to cut a concrete wall in a position parallel to the concrete wall. The cutter frame, which is assembled to the connection frame by bolts and nuts, shapes into a 'Ý‹' and holds the rotating motor and a hydraulic motor. The cutters having super hard tips are attached to the outer surface of the rotating drum alternately so that the header can cut the concrete wall with less power.

Description

Header for cutting concrete {Header for cutting conrete plate}

Figure 1 is a side view showing a header for concrete grounding according to the present invention mounted on an excavator.

Figure 2 is a plan view showing a header for concrete concrete according to the present invention mounted on an excavator.

3 is a perspective view of a header for concrete grounding according to the present invention.

Figure 4 is a front view of the concrete roughing header according to the present invention.

5 is an exploded perspective view of a header for concrete roughening according to the present invention.

6 is a cross-sectional view of the header for concrete chamfering according to the present invention.

7 and 8 is a view showing a state of cutting the concrete wall surface using an excavator equipped with a header for concrete drilling according to the present invention.

9 is a perspective view of another example of a header for concrete roughening according to the present invention.

10 is a plan view of another example of a header for concrete roughening according to the present invention.

11 is a cross-sectional view of another example of a header for concrete roughening according to the present invention.

12 is a plan view showing an operating state of another example of the header for concrete roughening according to the present invention.

-Explanation of symbols for the main parts of the drawings

1: header for concrete grinding 2: boom

3: boom cylinder 4: boom operating pin

5: Arm Cylinder 6: Arm Operating Pin

7: bucket cylinder 8: auxiliary link

9: Bucket operation link 10: Body

11: arm 12: connecting frame

13: bucket operation pin 14: cutter frame

15 cutter 16 rotating drum

17, 28: support plate 18: connecting plate

19: arm coupling hole 20: link coupling hole

21, 22, 29: coupling hole 23: hydraulic motor

24: Bolt 25: Nut

26: buffer member 27: fixed plate

30: rotating shaft 31: cover

32: water supply pipe 33, 35a, 35b: spray nozzle

34a, 34b: branch pipe 40: rotation means

41a, 41b: Clamp 42: Link

43: hydraulic cylinder 44: hinge pin

45: auxiliary support link 46a, 46b: fixed piece

The present invention relates to a header for concrete digging mounted on an excavator. In particular, the present invention is carried out in the minimum space to cut the concrete wall by using the header for mounting the excavator in the minimum space, while blocking the dust generated in the process of cutting the concrete wall while the concrete or stone fragments to the rear The present invention relates to a header for concrete chamfering that does not bounce.

In general, when excavating a large building, etc. for the foundation of a building in a dense area of a building, there is a risk of weakening the foundation, cracking, etc. of other buildings located nearby. As a construction method for preventing this, the underground continuous wall construction method is widely known. This underground continuous wall construction method is a method of forming underground continuous walls of reinforced concrete by excavating trenches of predetermined depth with excavators, etc., placing reinforcement structures, and placing concrete without revealing the entire ground. .

In this way, the underground continuous wall construction method, which constructs the underground continuous wall after excavating the soil on the inner side and then constructs the structure, can reduce the cracks on the surrounding ground and reduce costs because the ground does not have to be exposed excessively to prepare the foundation. And shorten the air.

However, when the underground continuous wall is constructed, an excavator is used to form a trench of a predetermined depth, and concrete is poured directly into the trench. Therefore, the side surface of the underground continuous wall constructed by the underground continuous wall construction method has the shape of the trench, excess excavation and Due to swelling of the wall, the underground continuous wall surface is uneven compared with the concrete foundation using formwork. Therefore, after the construction of the underground continuous wall, it is necessary to select the surface of the inner wall.

In the above cases or when maintenance of concrete walls in tunnels is required, prior art for selecting concrete walls is Korean Patent Registration No. 0177816 (1999. 04. 01.) and Utility Model No. 20-0262755 (2002). 03. 18.), Patent Publication No. 10-2005-0057836 (June 16. 2005) and Utility Model Registration No. 20-0421734 (July 18, 2006) .

The 'face grinder' of the Republic of Korea Patent No. 0177816 significantly reduces the overall length by changing the structure of the elastic member and improves the buffering role of the buffer member of the elastic member. In addition, the 'carbide tip improvement structure of rotary concrete face grinder' of Registered Utility Model No. 20-0262755 is formed by inserting a carbide tip attached to the rotating drum in a helical line in the shape of casing and inserting it into the holder so that the carbide tip rotates The concrete surface can be ground evenly and deeply, and the support and the rotating drum can be connected to a plurality of axes, but elastically installed with a spring to absorb vibration.

In addition, the 'face cutter' of Patent Publication No. 10-2005-0057836 can change the cutter to install the cutter without the use of the coupling key, by changing the arrangement of the cutter can be prevented from being pulled to one side and exclude the elastic member. In addition, the Utility Model Registration No. 20-0421734, 'Excavator combined with the side surface excavator', is characterized in that the excavator's boom and traveling operation, rotary drum, clamp, guide hydraulic cylinder, and link can be operated in various ways.

The prior art as described above requires a large work space because it is a way to scrape the wall located on the front of the excavator. For this reason, in a narrow place such as a tunnel, it is sometimes necessary to control the vehicle when the wall is cut. In addition, a large amount of dust is generated in the process of scraping the concrete wall surface, the concrete fragments that are shaved by the grinding header is likely to be thrown out and cause a safety accident.

The present invention for solving the problems of the prior art as described above to reduce the work space to the minimum by reducing the working space by cutting the concrete wall surface in the side of the wall to suppress the dust prevention by spraying water while cutting the concrete wall surface The purpose is to cover the top of the header with a cover so that the concrete or stone fragments do not bounce off during the scraping of the concrete wall.

Concrete faceting header according to the present invention for achieving the object as described above, the arm coupling hole and the link coupling for coupling the excavator arm and the bucket operation link on the top of the two support plate integrally coupled by a connecting plate A ball is formed, and a cutter frame is coupled to a side of the support plate, and the support plate of the cutter frame is coupled to a rotating shaft of a rotating drum of a cylindrical shape having a plurality of cutters and a double coupling with a hydraulic motor. The fixed plate is characterized in that coupled to one side of the hydraulic motor coupled to the rotary drum double.

In addition, in the present invention, between the support plate of the connecting frame and the cutter frame, it is preferable that a buffer member for cushioning the vibration of the cutter and the rotating drum is embedded.

In addition, in the present invention, a plurality of coupling holes are formed in the connection frame support plate and the cutter frame, and bolts and nuts are fastened to the coupling holes of the support plate and the cutter frame to integrally couple the support plate and the cutter frame. Preferably, the spring is embedded in the bolt between the support plate and the cutter frame.

In addition, in the present invention, a water supply pipe having a plurality of injection nozzles is installed on the upper portion of the cover frame, the branch pipe having a spray nozzle at the end branched from the water supply pipe is the support plate along the support plate and the fixing plate of the cover frame And it is preferred to extend to the end of the fixing plate.

In addition, in the present invention, it is preferable that a cover that covers 40 to 60% of the rotating drum is coupled to the upper portion of the cutter frame.

In the present invention, there is provided a rotation means for adjusting the horizontal angle of the rotating drum between the connecting frame and the cutter frame, the rotating means are respectively on the surface facing the support plate of the connecting frame and the cutter frame A clamp having a triangular horizontal cross section is coupled, and the clamp is rotatably coupled with a hinge pin together with one end of the auxiliary support link, and a hydraulic link with a link link hinged at one end to a fixing piece on the side of the clamp. It is preferable to have a structure in which the other end of the cylinder and the other end of the auxiliary support linkage are rotatably coupled by one hinge pin.

Hereinafter, the present invention will be described in detail.

The conventional excavator and the concrete grounding header 1 according to the present invention, as shown in Figs. 1 and 2, the vehicle body 10, the boom 2, the arm 11, the concrete grounding header 1 ) And a connecting frame 12 which connects the header 1 for concrete roughing to the side of the arm 11.

Here, the boom 2 and the arm 11 and the concrete roughing header 1 are operated by the boom cylinder 3, the arm cylinder 5 and the bucket cylinder 7 as a working actuator. The boom 2 is coupled to the vehicle body 10 by a boom actuating pin 4, the arm 11 is coupled to the boom 2 by an arm actuating pin 6, and the header 1 for concrete chamfering is It is coupled to the arm 11 by the bucket actuating pin 13, and by the bucket actuating link 9 and the auxiliary link 8 to the arm 11, the free movement of the concrete faceting header 1 is possible. Do.

The self 10 and the boom 2, the arm 11 and the bucket not shown have the same structure as a conventional excavator, the present invention is to replace the bucket to cut the concrete wall surface (1) ) Can be mounted and removed as necessary, and is composed of a connecting frame 12 and a header 1 for concrete roughening coupled to the connecting frame 12.

3 and 6 show the header 1 for concrete concrete according to the present invention, which is composed of a connecting frame 12, a cutter frame 14, and a rotating drum 16 having a plurality of cutters 15 on an outer circumferential surface thereof. have.

The connecting frame 12 is connected between the two support plates 17 standing vertically by changing the coupling direction of the concrete grinding cutter 1 so that the excavator stands on the side of the concrete wall to cut the concrete wall surface. The plate 18 is coupled, the upper portion of the support plate 17 is formed with an arm coupling hole 19 and a link coupling hole 20 for coupling the arm 11 and the bucket operating link 9, two support plates A plurality of coupling holes 21 are drilled in the 17 to separate the coupling with the cutter frame 14.

In addition, the cutter frame 14 is for holding the rotating drum 16 and the hydraulic motor 23, and has a plurality of coupling holes 22 for separate coupling with the connecting frame 12, so that the coupling holes 21 ( It is possible to separate coupling by a plurality of bolts 24 and nuts 25 fastened to 22). At this time, the connecting frame 12 separated by the bolt 24 and the nut 25 has a plurality of cutters 15 generated in the process of scraping the concrete wall between the support plate 17 and the cutter frame 14. A shock absorbing member 26 such as a coil spring or the like for buffering the vibration of the rotating drum 16 is inherent.

The cutter frame 14 having the plurality of cutters 15 has a horizontal cross section of a 'c' shape and is integrally coupled with the hydraulic motor 23 to support the hydraulic motor 23 generating a rotational force by hydraulic pressure. It has a support plate 28 having a coupling plate 29 to be rotatably coupled with the rotating shaft 30 formed on the side of the fixed plate 27 and the rotating drum 16 to.

Thus, the rotary drum 16 and the hydraulic motor 23 positioned between the fixed plate 27 and the support plate 28 of the cutter frame 14 generate power for cutting off the concrete wall surface and the concrete wall surface is substantially removed by this power. The rotating drum 16 is coupled to the hydraulic motor 23 on the outer circumferential surface of the hydraulic motor 23 as a part to be scraped off. Since a plurality of cutters 15 made of cemented carbide tips are intersected on the outer circumferential surface of the rotating drum 16, the concrete wall surface can be efficiently scraped off with little force.

In addition, the cutter frame 14 coupled to the connecting frame 12 behind the cutter frame 14, that is, for spraying water between the concrete wall surface and the rotating drum 16, which is substantially scraped off the concrete wall surface, is made. A water supply pipe 32 having a plurality of injection nozzles 33 is provided, and branch pipes 34a and 34b branch from the water supply pipe 32 so that the fixing plate 27 and the upper side of the support plate 28 are fixed. It extends to the end of 27 and the support plate 28, and the injection nozzles 35a and 35b for injecting water are also provided at the ends of the branch pipes 34a and 34b.

In addition, the cover 31 is coupled to the upper portion of the fixed plate 27 and the support plate 28, the cover 31 is installed so as to cover about half (40 to 60%) of the rotating drum 16 In the process of scraping off concrete walls, concrete or stone fragments do not bounce backwards.

7 and 8 show a state of cutting the concrete wall by using the concrete grounding header 1 according to the present invention, which is mounted on a conventional excavator, and the operator may have an excavator on the side of the concrete wall as shown in FIG. Rotating drum 16 is in close contact with the concrete wall even when the position can be cut off the concrete wall. In particular, since the dust is not generated by spraying water on the upper and side surfaces of the rotating drum 16 while the concrete wall is being scrapped, the cover 31 is covered with the rotating drum 16 so that the concrete wall is scraped off. Concrete or stone does not bounce back.

In addition, the operator can operate the boom 2 and the arm 11 by driving the boom cylinder 3 and the arm cylinder 5 of the excavator to cut the place where the ground and the concrete wall contact as shown in FIG. That is, when the operator cuts the concrete wall surface at a position higher than the radius of the cylindrical rotating drum 16, the worker keeps the rotating drum 16 horizontally around the rotating shaft, and the cylindrical rotating drum 16 When scraping the concrete wall surface lower than the radius, the rotating drum 16 is to be kept vertically around the axis of rotation, as shown in the drawing can be cut by the header for the concrete roughing of all concrete walls.

Concrete sawing cutter according to another embodiment of the present invention as shown in Figures 9 to 12 as the rotating means 40 is added to the concrete sawing cutter 1 of the embodiment described in Figures 1 to 8 as follows In FIG. 1 to FIG. 8, a detailed description of the configuration described in FIG. 8 will be omitted, and in particular, a spray nozzle for injecting water and a cover for safety will be omitted for better understanding of the rotation means 40.

Rotating means 40 for adjusting the angle of the rotating drum 16 between the connection frame 12 and the cutter frame 14 of the concrete face cutter, as shown in Figures 9 to 11, the connection frame 12 Clamps 41a and 41b each having a triangular horizontal cross section are coupled to the support plate 17 and the cutter frame 14 of the support plate 17, and the clamps 41a and 41b are connected to one end of the auxiliary support link 45. The coupling link 42 and the hydraulic cylinder 43 which are coupled to each other by a hinge pin 44 so as to be rotatable and one end of which is hinged to the fixing pieces 46a and 46b on the sides of the clamps 41a and 41b. The other end of the and the other end of the auxiliary support link 45 has a structure that is rotatably coupled by one hinge pin.

Accordingly, as the length of the hydraulic cylinder 43 is adjusted by the operation of the hydraulic cylinder 43, as shown in FIG. 12, the clamp 41a, that is, the rotating drum 16 rotates around the hinge pin 44. You can cut the concrete wall at an angle.

Therefore, according to the present invention, since a method of cutting the wall located on the front of the excavator requires a large work space, a large amount of dust is generated in the process of cutting the concrete wall, while the concrete pieces are cut out by the cutting header. Unlike the prior art which may cause a safety accident, the present invention can reduce the work space to a minimum by performing the work of scraping off the concrete wall from the side of the wall, and suppresses dust prevention by spraying water while cutting off the concrete wall. By covering the top of the faceted header with a cover, the concrete or stone fragments do not bounce off during the scraping of the concrete wall.

Claims (6)

Arm coupling holes and link coupling holes for coupling the excavator arm and the bucket operating link are formed on top of the two support plates integrally coupled by the connecting plate, The cutter frame is coupled to the side of the support plate, The support plate of the cutter frame is coupled to the hydraulic motor in double and coupled to the rotating shaft of the rotating drum of the cylindrical shape having a plurality of cutters and the fixing plate of the cutter frame is coupled to one side of the hydraulic motor coupled to the rotating drum Header for concrete grounding, characterized in that coupled. The method of claim 1, Between the support plate of the connecting frame and the cutter frame, a concrete member header for cushioning, characterized in that the buffer member for cushioning the vibration of the cutter and the rotating drum is embedded. The method of claim 1, A plurality of coupling holes are formed in the connection frame support plate and the cutter frame, and bolts and nuts are fastened to the coupling holes of the support plate and the cutter frame to integrally couple the support plate and the cutter frame, and between the support plate and the cutter frame. Header for concrete roughening, characterized in that the spring is embedded in the bolt. The method of claim 1, A water supply pipe having a plurality of injection nozzles is installed at an upper portion of the cover frame, and a branch pipe having injection nozzles at an end branched from the water supply pipe extends to the ends of the support plate and the fixing plate along the support plate and the fixing plate of the cover frame. Header for concrete roughening, characterized in that extending. The method of claim 1, The upper surface of the cutter frame, the cover for the concrete surface, characterized in that the cover is coupled to cover 40 to 60% of the rotating drum. The method of claim 1, Rotating means is provided between the connecting frame and the cutter frame to adjust a horizontal angle of the rotating drum, wherein the rotating means has a horizontal cross section in a triangular shape on the surface facing the support plate of the connecting frame and the cutter frame, respectively. A clamp is coupled, and the clamp is pivotably coupled with a hinge pin together with one end of the auxiliary support link, and one end of the hydraulic cylinder and the other end of the hydraulic cylinder are hingedly coupled to the fixing piece of the clamp side. The other end of the auxiliary support link is concrete header for header characterized in that it has a structure coupled to be rotated by one hinge pin.

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