Concrete guardrail joint cutting device and using method thereof

Abstract

The invention discloses a concrete guardrail joint cutting device and a using method thereof.The concrete guardrail joint cutting device comprises a positioning part, a moving guide part and a cutting machine, the positioning part comprises two parallel guide rails arranged at intervals, and the upper ends of the two guide rails are bent to form hooks and can be hung on a concrete guardrail; the movable guide part comprises a guide rod and a cutting guide frame located below the guide rod, the guide rod is slidably connected to the guide rail, and the top end of the cutting guide frame is hinged to the guide rod and can vertically slide along the guide rail along with the guide rod; and the head of the cutting machine is clamped on the cutting guide frame to cut the false seam along with the vertical movement of the cutting guide frame. A cutting machine can be fixed through the cutting guide frame, the joint cutting path of the cutting machine is guided through the guide rail, the cutting angle of the cutting machine can be adjusted through hinge joint of the cutting guide frame and the guide rod, and a cut false joint is straight and attractive; the problems that when a worker holds a cutting machine by hand to conduct joint cutting operation in the prior art, joint cutting is not smooth and the joint cutting depth cannot reach the ideal state due to shaking of the hand are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge accessory engineering construction, and more particularly to a concrete guardrail cutting device and a use method thereof. Background Art

[0002] Concrete guardrails usually use cut false joints to prevent irregular cracks in concrete due to temperature changes, shrinkage and expansion. Cast-in-place concrete guardrails usually have a false joint every 5-8 meters, with a width of 2-3 mm and a depth of 2-3 mm.

[0003] In actual construction, workers usually cut the false seams with handheld cutting machines after the guardrail formwork is removed. However, during the construction of concrete guardrails, irregular cracks often develop on the surface of the concrete guardrails due to untimely false seam cutting on the guardrail surface, resulting in a decline in the quality of concrete guardrail construction or quality rework. In addition, during the cutting process of the handheld cutting machine, workers usually tilt the seams due to hand shaking, which affects the appearance of the guardrail and causes poor appearance quality.

[0004] Therefore, how to provide a concrete guardrail cutting device that can effectively ensure the quality and aesthetics of the guardrail cutting and improve the quality of guardrail construction is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a concrete guardrail cutting device and a method of using the same. The positioning part hangs the device on the guardrail, and the cutting machine is positioned by a movable guide part. The movable guide part drives the cutting machine to move up and down along the guide rail of the positioning part to complete the false seam cutting, which effectively solves the problem of uneven cutting caused by hand shaking of the operator, affecting the appearance of the guardrail.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A concrete guardrail cutting device, comprising:

[0008] A positioning part, the positioning part comprises two parallel and spaced guide rails, the axes of the two guide rails are parallel to the height direction of the concrete guardrail and the upper ends of the two guide rails are bent to form hooks and can be hung on the concrete guardrail;

[0009] A movable guide portion, the movable guide portion comprising a guide rod and a cutting guide frame located below the guide rod, the two ends of the guide rod being slidably connected to the two opposite side walls of the two guide rails, the top end of the cutting guide frame being hinged to the guide rod and being able to slide up and down along the two guide rails with the guide rod;

[0010] A cutting machine, the head of which is clamped on the cutting guide frame so as to move up and down with the cutting guide frame to cut the false seam.

[0011] The beneficial effect of the technical solution of the present invention is that the guide rail hung on the concrete guardrail can guide the path of the false seam cutting, the cutting machine is positioned by the cutting guide frame, and the up and down movement of the cutting machine is realized by the movement of the guide rod, thereby realizing the cutting operation of the seam. During the cutting process, the cutting route is straight and stable, and the route will not change, thereby ensuring that the cut false seam is straight and beautiful.

[0012] Preferably, the movable guide part further includes a connecting piece; the guide rod is a square rod, and the cutting guide frame is a rectangular frame; one end of the connecting piece is fixed to the middle of the bottom surface of the square rod, and the other end is hinged to the top of the rectangular frame; the head of the cutting machine is clamped in the frame of the rectangular frame. The cutting guide frame in the form of a rectangular frame is hinged to the guide rod through the connecting piece, and the cutting angle of the cutting machine can be adjusted by rotating the cutting guide frame to ensure smooth false seam cutting.

[0013] Preferably, it also includes a clamping piece, which is fixed on the side of the rectangular frame away from the concrete guardrail to clamp the head of the cutter; the clamping piece is screwed with a positioning bolt to adjust the distance between the cutter and the concrete guardrail and fix their positions; the saw blade plane of the cutter is arranged perpendicular to the outer surface of the concrete guardrail. The cutter is fixed to the rectangular cutting guide frame through the clamping piece, and the distance between the cutter and the concrete guardrail can be adjusted through the positioning bolt to ensure that the cutting depth meets the requirements.

[0014] Preferably, both ends of the guide rod and the cutting guide frame are rotatably connected to guide wheels, and the guide wheels are rollingly connected to the guide rails. The guide wheels enable the guide rod and the cutting guide frame to move synchronously up and down along the guide rails, so as to meet the false seam cutting operation on the top surface and inner side surface of the concrete guardrail.

[0015] Preferably, the positioning part further includes a limit rod and a connecting rod, the two ends of the limit rod are respectively fixed to the two side walls opposite to the upper ends of the two guide rails; the two ends of the connecting rod are respectively fixed to the two side walls opposite to the ends of the two guide rails. The connecting rod can connect the two guide rails to form an "X"-shaped bracket, and the limit rod can prevent the guide rod from slipping off the guide rail.

[0016] Preferably, it further comprises positioning columns, wherein the number of the positioning columns is multiple, one end of the multiple positioning columns is vertically fixed on a side wall of the guide rail facing the concrete guardrail, and the other end can abut against the outer surface of the concrete guardrail. The positioning columns contact the surface of the concrete guardrail to prevent the guide rail from contacting the concrete head-on, thereby affecting the appearance of the concrete guardrail.

[0017] Preferably, the outer periphery of the positioning column is covered with a rubber pad, so as to realize flexible contact between the cutting device and the concrete guardrail, thereby preventing the cutting device from damaging the appearance of the guardrail concrete during installation, removal or movement.

[0018] Preferably, a reinforcing part is further included, and the reinforcing part includes a horizontal bar and a vertical bar; one end of the horizontal bars is fixed to a side wall of the guide rail away from the guide bar, and the vertical bar is arranged parallel to the guide rail, and its side wall is fixed to the other end of the horizontal bar. The reinforcing part is used to ensure the rigidity of the cutting device, thereby ensuring that the cutting device can be used cyclically and its service life is increased.

[0019] Preferably, the shape of the positioning portion is adapted to the cross-sectional shape of the concrete guardrail.

[0020] The present invention also provides a method for using the concrete guardrail cutting device, which uses the concrete guardrail cutting device in the above technical solution to cut false seams on the concrete guardrail, comprising the following steps:

[0021] S1. Put the device in place, assemble the cutting device and hang it on the concrete guardrail;

[0022] S2, cutting depth adjustment, adjust the depth of the cutting machine entering the cutting guide frame to conduct trial cutting. When the cutting depth and width meet the requirements, fix the position of the cutting machine;

[0023] S3, false seam cutting, the guide rod and the cutting guide frame move up and down along the height direction of the guardrail, and the cutting machine completes the false seam cutting operation during the movement.

[0024] It can be seen from the above technical scheme that compared with the prior art, the present invention discloses a concrete guardrail cutting device and a method of using the same, wherein the cutting guide frame can fix the cutting machine, and the cutting guide frame moves up and down along the guide rail with the guide rod to realize the false seam cutting operation, and the guide rail is used to guide the cutting path of the cutting machine, and the articulation of the cutting guide frame and the guide rod can adjust the cutting angle of the cutting machine. The device of the present invention is simple and highly maneuverable, and the false seams cut are straight and beautiful, which effectively solves the problem that the traditional workers use hand-held cutting machines to perform cutting operations, which causes uneven cutting and the cutting depth does not reach an ideal state due to hand shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of the guardrail cutting device provided by the present invention;

[0027] Figure 2 A schematic diagram of the use of the cutting device provided by the present invention;

[0028] Figure 3 for Figure 2 A magnified schematic diagram of part A in FIG.

[0029] in,

[0030] 1-positioning part; 11-guide rail; 12-limiting rod; 13-two rods; 14-positioning column;

[0031] 2-movable guide part; 21-guide rod; 22-connecting piece; 23-pin shaft; 24-cutting guide frame; 25-wheel frame; 26-guide wheel; 27-clamping piece; 28-positioning bolt;

[0032] 3- Cutting machine;

[0033] 4-reinforcement part; 41-cross bar; 42-vertical bar;

[0034] 5-Concrete guardrail. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] See attached Figures 1 to 3 The embodiment of the present invention discloses a concrete guardrail cutting device, comprising:

[0038] The positioning part 1 comprises two parallel and spaced guide rails 11, the axes of the two guide rails 11 are parallel to the height direction of the concrete guardrail 5 and the upper ends of the two guide rails 11 are bent to form hooks and can be hung on the concrete guardrail 5;

[0039] The movable guide part 2 includes a guide rod 21 and a cutting guide frame 24 located below the guide rod 21. The two ends of the guide rod 21 are respectively slidably connected to the two opposite side walls of the two guide rails 11. The top end of the cutting guide frame 24 is hinged to the guide rod 21 and can slide up and down along the two guide rails 11 with the guide rod 21.

[0040] The cutting machine 3 has a head portion which is clamped on the cutting guide frame 24 so as to move up and down with the cutting guide frame 24 to cut the false seam.

[0041] In this embodiment, the shape of the positioning portion 1 is adapted to the cross-sectional shape of the concrete guardrail 5 .

[0042] In actual use, two guide rails are hung on the concrete guardrail, and the cutter is fixed on the cutting guide frame. The worker holds the cutting machine and moves it up and down along the height direction of the guardrail. During this process, the cutting guide frame is pushed and pulled. The cutting guide frame drives the guide rod to slide up and down along the guide rails, thereby realizing the cutting operation on the top surface and inner side of the guardrail. When encountering the chamfered position on the inner side of the guardrail, the cutting angle of the cutter can be adjusted by slightly rotating the cutting guide frame to realize a comprehensive false seam cutting operation on the concrete guardrail.

[0043] In some other specific embodiments, the movable guide part 2 also includes a connecting piece 22; the guide rod 21 is a square rod, and the cutting guide frame 24 is a rectangular frame; one end of the connecting piece 22 is fixed to the middle of the bottom surface of the square rod, and the other end is hinged to the top of the rectangular frame; the head of the cutting machine 3 is clamped in the frame of the rectangular frame.

[0044] The guide rod is hinged to the cutting guide frame through a connector, and the connector can increase the distance between the guide rod and the cutting guide frame. When encountering a chamfered position of the guardrail, it is convenient for the cutting operation of the cutting machine, and the guide rod will not affect the cutting operation due to being too close to the cutting machine.

[0045] In this embodiment, the guide rod is formed by two angle steels being buckled and welded together, the connecting piece is a steel plate, and the cutting guide frame is welded into a rectangular frame by the angle steels.

[0046] In other specific embodiments, two parallel and spaced pin ears are fixed to the top of the cutting guide frame 24, and a pin shaft 23 is fixed to the end of the connecting piece 22 away from the guide rod 21. Both ends of the pin shaft 23 are rotatably connected in the two pin ears, and the cutting guide frame 24 and the guide rod 21 are hinged by the pin shaft 23. The cutting guide frame 24 can rotate a certain angle through the pin shaft 23 to adjust the cutting angle of the cutting machine 3.

[0047] In other specific embodiments, it also includes a clamping member 27, which is fixed on the side of the rectangular frame away from the concrete guardrail 5 to clamp the head of the cutting machine 3; a positioning bolt 28 is screwed on the clamping member 27 to adjust the distance between the cutting machine 3 and the concrete guardrail 5 and fix their positions; the saw blade plane of the cutting machine 3 is arranged perpendicular to the outer surface of the concrete guardrail 5.

[0048] As shown in the attached drawings, the clamping parts are welded into an L shape by two angle steels arranged perpendicular to each other. One side panel of the vertically arranged angle steel is fixed on the frame of the rectangular frame, and the panel of the horizontally arranged angle steel extends along the side away from the concrete guardrail. There are two clamping parts and they are symmetrically arranged up and down along the rectangular frame. The cutting head of the cutting machine is clamped between the two side panels of the two horizontally arranged angle steels of the two clamping parts, and the positioning bolts are screwed on the upper angle steel. When performing cutting operations, the cutting machine is first used to perform a trial cutting. When the depth and width of the false seam of the trial cutting meet the requirements, the positioning bolts are screwed in so that the threaded end thereof abuts against the head of the cutting machine to fix the position of the cutting machine.

[0049] In other specific embodiments, in order to better achieve the synchronous up and down movement between the guide rod and the cutting guide frame, both ends of the guide rod 21 and the cutting guide frame 24 are rotatably connected to guide wheels 26, and the guide wheels 26 are rollingly connected to the guide rail 11.

[0050] like Figure 3 As shown, the guide rail is an angle steel, the guide wheel is a slot-shaped guide wheel, and the guide wheels at both ends of the guide rod are clamped on both sides of the horizontal panel of the guide rail, thereby realizing the up and down movement of the guide rod and the cutting guide frame.

[0051] In order to further optimize the above technical solution and facilitate the rotation of the cutting guide frame 24, the cutting guide frame 24 is hinged with wheel frames 25 on both sides of the frame facing the concrete guardrail 5. The wheel frames 25 are hinged to the cutting guide frame 24 in the form of a ball joint. A slot-shaped guide wheel 26 is rotatably connected to the wheel frame 25. Through the hinged connection between the cutting guide frame 24 and the wheel frame 25, the rotation of the cutting guide frame 24 relative to the connecting piece 22 can be better realized.

[0052] In order to further optimize the above technical solution, the positioning part 1 also includes a limit rod 12 and a connecting rod 13. The two ends of the limit rod 12 are respectively fixed to the two side walls opposite to the upper ends of the two guide rails 11; the two ends of the connecting rod 13 are respectively fixed to the two side walls opposite to the lower ends of the two guide rails 11.

[0053] The two guide rails are connected by a limit rod and a connecting rod. The limit rod can limit the sliding displacement of the guide rod to prevent the guide rod from sliding off the guide rail.

[0054] In this embodiment, the bending part of the guide rail relative to the inner chamfer of the concrete guardrail is processed into an arc transition section to facilitate the up and down movement of the guide rod and the cutting guide frame.

[0055] In other specific embodiments, in order to avoid rigid contact between the cutting device and the concrete guardrail, and to prevent damage to the guardrail concrete and affect the appearance quality of the guardrail, a positioning column 14 is further included. There are multiple positioning columns 14, one end of each positioning column 14 is vertically fixed to a side wall of the guide rail 11 facing the concrete guardrail 5, and the other end can abut against the outer surface of the concrete guardrail 5. The outer periphery of the positioning column 14 is covered with a rubber pad.

[0056] In other specific embodiments, a reinforcing part 4 is further included, and the reinforcing part 4 includes a crossbar 41 and a vertical bar 42; one end of the crossbars 41 is fixed to a side wall of the guide rail 11 away from the guide rod 21, and the vertical bar 42 is arranged parallel to the guide rail 11, and its side wall is fixed to the other end of the crossbar 41. The reinforcing part is used to give the cutting device a certain rigidity, thereby increasing the number of turnover uses.

[0057] In other specific embodiments, multiple cutting devices are provided along the length direction of the concrete guardrail, a slide rail is fixed to the outer wall of the concrete guardrail, and the bent section of the guide rail is slidably connected to the slide rail. By sliding the cutting device along the slide rail, the cutting device can cut the false seams sequentially along the length direction of the concrete guardrail, thereby avoiding the disadvantage of carrying the cutting device.

[0058] This embodiment only provides the method for false seam cutting on the inner side of the concrete guardrail. When cutting the outer side of the concrete guardrail, the cutting device is hung in reverse and used in conjunction with the template trolley for guardrail construction. Workers perform false seam cutting operations in the hanging basket of the trolley.

[0059] Embodiment 2:

[0060] The embodiment of the present invention discloses a method for using a concrete guardrail cutting device, wherein the concrete guardrail cutting device in embodiment 1 is used to cut a false seam on a concrete guardrail, comprising the following steps:

[0061] S1. Put the device in place, assemble the cutting device and hang it on the concrete guardrail;

[0062] When the concrete strength of the guardrail reaches more than 75%, the guardrail template is disassembled, and the assembled cutting device is hung on the concrete guardrail. In order to ensure the aesthetics, the position of the false seam can be set at the joint of two adjacent guardrail templates;

[0063] S2, cutting depth adjustment, adjust the depth of the cutting machine entering the cutting guide frame to conduct trial cutting. When the cutting depth and width meet the requirements, fix the position of the cutting machine;

[0064] After the cutting machine is clamped on the cutting guide frame, a trial cutting operation is carried out. When the cutting depth meets the requirements, the position of the cutting machine is fixed by the positioning bolts;

[0065] S3, false seam cutting, the guide rod and the cutting guide frame move up and down along the height direction of the guardrail, and the cutting machine completes the false seam cutting operation during the movement.

[0066] When workers operate the cutting machine to perform cutting operations, they can provide upward or downward moving force through the cutting machine, thereby pushing or pulling the cutting guide frame to move up and down along the guide rail, and at the same time, the guide rod will move up and down along the guide rail synchronously, thereby completing the cutting operation of the entire false seam of the guardrail.

[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0068] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete guardrail cutting device, characterized in that: include: A positioning part (1), the positioning part (1) comprising two parallel and spaced guide rails (11), the axes of the two guide rails (11) being parallel to the height direction of the concrete guardrail (5) and the upper ends of the two guide rails (11) being bent to form hooks and being able to be hung on the concrete guardrail (5); A movable guide portion (2), the movable guide portion (2) comprising a guide rod (21) and a cutting guide frame (24) located below the guide rod (21), the two ends of the guide rod (21) being slidably connected to opposite side walls of the two guide rails (11), the top end of the cutting guide frame (24) being hinged to the guide rod (21) and being able to slide up and down along the two guide rails (11) along with the guide rod (21); A cutting machine (3), the head of which is clamped on the cutting guide frame (24) so ​​as to move up and down with the cutting guide frame to cut the false seam.

2. A concrete guardrail cutting device according to claim 1, characterized in that: The movable guide part (2) also includes a connecting piece (22); the guide rod (21) is a square rod, and the cutting guide frame (24) is a rectangular frame; one end of the connecting piece (22) is fixed to the middle of the bottom surface of the square rod, and the other end is hinged to the top end of the rectangular frame; the head of the cutting machine (3) is clamped in the frame body of the rectangular frame.

3. A concrete guardrail cutting device according to claim 2, characterized in that: It also includes a clamping member (27), which is fixed on a side of the rectangular frame away from the concrete guardrail (5) to clamp the head of the cutting machine (3); a positioning bolt (28) is screwed on the clamping member (27) to adjust the distance between the cutting machine (3) and the concrete guardrail (5) and fix their positions; the saw blade plane of the cutting machine (3) is arranged perpendicular to the outer surface of the concrete guardrail (5).

4. A concrete guardrail cutting device according to claim 1, characterized in that: Both ends of the guide rod (21) and the cutting guide frame (24) are rotatably connected to guide wheels (26), and the guide wheels (26) are rollingly connected to the guide rail (11).

5. A concrete guardrail cutting device according to claim 1, characterized in that: The positioning portion (1) further comprises a limiting rod (12) and a connecting rod (13); the two ends of the limiting rod (12) are respectively fixed to the two side walls opposite to the upper ends of the two guide rails (11); and the two ends of the connecting rod (13) are respectively fixed to the two side walls opposite to the lower ends of the two guide rails (11).

6. A concrete guardrail cutting device according to claim 5, characterized in that: It also includes positioning columns (14), which are in plurality. One end of each of the positioning columns (14) is vertically fixed on a side wall of the guide rail (11) facing the concrete guardrail (5), and the other end can abut against the outer surface of the concrete guardrail (5).

7. A concrete guardrail cutting device according to claim 6, characterized in that: The outer periphery of the positioning column (14) is covered with a rubber pad.

8. A concrete guardrail cutting device according to claim 1, characterized in that: It also includes a reinforcing portion (4), the reinforcing portion (4) including a cross bar (41) and a vertical bar (42); one end of a plurality of the cross bars (41) is fixed to a side wall of the guide rail (11) away from the guide rod (21), and the vertical bar (42) is arranged parallel to the guide rail (11), and its side wall is fixed to the other end of the cross bar (41).

9. A concrete guardrail cutting device according to claim 1, characterized in that: The shape of the positioning portion (1) is adapted to the cross-sectional shape of the concrete guardrail (5).

10. A method for using a concrete guardrail cutting device, using the concrete guardrail cutting device according to any one of claims 1 to 9 to cut false seams on a concrete guardrail, comprising the following steps: S1. Put the device in place, assemble the cutting device and hang it on the concrete guardrail; S2, cutting depth adjustment, adjust the depth of the cutting machine entering the cutting guide frame to conduct trial cutting. When the cutting depth and width meet the requirements, fix the position of the cutting machine; S3, false seam cutting, the guide rod and the cutting guide frame move up and down along the height direction of the guardrail, and the cutting machine completes the false seam cutting operation during the movement.

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