A concrete prefabricated wall cutting device

Abstract

The present invention relates to the field of wall cutting technology, specifically a prefabricated concrete wall cutting device, including a mobile base, a driving unit, a frame unit and a cutting mechanism. In the present invention, a rectangular frame is formed by selecting an appropriate amount of frame plates according to the shape of the required cutting area and four L-shaped frames, and the L-shaped frame and the frame plates are both close to the wall and installed on the wall surface. The U-shaped frame is manually pushed so that the U-shaped frame drives the cutting tool to cut along the four sides of the rectangular frame. After completing the full circle movement, the cutting operation of the rectangular area is completed, and then the entire L-shaped frame and frame plate are removed, avoiding repeated installation and disassembly operations, reducing labor costs and improving the convenience of cutting operations. The rectangular frame formed by assembly allows the two adjacent cutting tracks of the cutting tool to remain vertical, which improves the cutting accuracy and ensures the stability of the movement of the cutting tool.

Description

Technical Field

[0001] The invention relates to the technical field of wall cutting, in particular to a prefabricated concrete wall cutting device. Background Art

[0002] Precast concrete walls are a building material widely used in modern construction technology. They feature efficient construction, better quality control and better cost-effectiveness. After the precast concrete walls are installed, the original design needs to be adjusted, such as changing the location of door openings, changing the size of windows, etc. Therefore, the walls need to be cut to adapt to new design requirements or site requirements.

[0003] At present, the above-mentioned cutting is mainly performed by rope saw cutting, disc saw cutting and water jet cutting. Among them, disc saw cutting is mainly for the cutting needs of the wall with small thickness and the need to cut out a rectangular area, such as modifying or cutting the position of door openings and window positions. When performing the above-mentioned disc saw cutting operation, the linear guide is first installed on the wall manually and fixed with screws. Then the disc saw is clamped onto the linear guide and the disc saw is moved along the linear guide for cutting. After the cutting is completed, the linear guide is removed and placed at the next position. The moving cutting process is repeated, and the above process is repeated twice so that the four placement positions of the linear guide form a rectangle together. The final cutting area is also a rectangle. After the cutting is completed, the linear guide is removed.

[0004] The current cutting process has the following problems: 1. The current cutting operation requires four installations and four removals of the linear guide rail. The overall operation process is cumbersome and requires a lot of labor and time costs. There is no correlation between two adjacent placements of the linear guide rail. It depends solely on manual judgment to determine whether the next placement position is perpendicular to the previous placement. This can easily lead to the four sides of the rectangular area after cutting being difficult to remain perpendicular to each other, affecting the cutting quality; 2. After the linear guide rail is installed, when the disc saw is manually pushed along the linear guide rail, the disc saw may be offset or unstable during movement due to factors such as gravity, resulting in uneven incisions or incisions deviating from the set trajectory. Summary of the invention

[0005] Based on this, it is necessary to provide a prefabricated concrete wall cutting device to solve the above-mentioned problems of the prior art.

[0006] The present application provides a prefabricated concrete wall cutting device, comprising: a mobile base, a lower end surface of the mobile base is provided with a driving unit, the driving unit is an existing mobile device including moving wheels, and a frame unit is provided on the mobile base.

[0007] The frame unit includes four L-shaped frames arranged in a matrix and a plurality of rectangular frame plates, and all the L-shaped frames and frame plates together form a rectangular frame. The frame unit also includes a tightening strip and a locking group for maintaining the shape stability of the rectangular frame.

[0008] Cutting mechanism, the front end faces of all the L-shaped frames and frame plates are provided with track grooves, the cutting mechanism includes track blocks, track blocks are slidably arranged in all the track grooves, the front end faces of the track blocks are provided with a U-shaped frame with an opening facing the rear side for sliding back and forth through a transverse bar, a disc saw is rotatably arranged in the U-shaped area of ​​the U-shaped frame through a drive shaft whose axis is perpendicular to its vertical section, and the cutting mechanism also includes a cutting unit for guiding the movement of the disc saw.

[0009] According to a preferred embodiment, the frame unit also includes a plug-in groove, and the right end surface of the frame plate and the right end surface of the horizontal section of the L-shaped frame are each provided with two plug-in grooves distributed up and down and with horizontal axes, and the left end surface of the frame plate and the upper end surface of the vertical section of the L-shaped frame are each fixedly provided with two plug-in columns with axes perpendicular to their corresponding end surfaces, and the plug-in columns correspond to and cooperate with adjacent plug-in grooves.

[0010] According to a favorable embodiment, the frame unit also includes bolts, the upper end surface of the movable base is fixedly provided with a bolt with a vertical axis, two tightening bars 1 distributed vertically are rotatably sleeved on the bolts, two mounting plates distributed vertically and both located above the tightening bar 1 are sleeved on the bolts, a tightening bar 2 is hingedly connected to the upper end surface of the mounting plate, and connecting bars are fixedly provided on the outer side walls of the L-shaped frame, the two tightening bars 1 are respectively hinged to the two lower connecting bars, and the two tightening bars 2 are respectively hinged to the two upper connecting bars.

[0011] According to a favorable embodiment, the locking group includes a rectangular groove, the upper surface of the mounting plate is penetrated with a rectangular groove, the bolt passes through the rectangular groove, and the thread on the bolt is matched with a nut for locking the clamping strip and the mounting plate.

[0012] According to an advantageous embodiment, the frame unit further comprises a through hole, and the inner wall of the track groove of the frame plate and the inner wall of the track groove of the L-shaped frame are both provided with a through hole whose axis extends from front to back.

[0013] According to a preferred embodiment, a connecting groove connecting to the corresponding track groove is provided on the front end surface of the junction of the horizontal section and the vertical section on the L-shaped frame, and the cross-section of the track groove is a T-shape with the longitudinal section located in front of the transverse section, and the cross-section of the track block is a T-shape that fits the track groove.

[0014] According to a preferred embodiment, the cutting unit includes an auxiliary block, an auxiliary block opposite to the track block and in a T shape is slidably arranged in the track groove, a rectangular plate is fixedly arranged on the front end face of the auxiliary block, two circular blocks distributed up and down are rotatably penetrated on the rectangular plate, a rotating shaft with a horizontal axis is hingedly arranged on the left end face of the circular block, a matching plate is fixedly arranged on the front end face of the transverse strip, a plurality of threaded grooves equidistantly arranged along its axis are provided on the rotating shaft, and a matching groove threadably matched with the threaded groove of the rotating shaft is provided on the matching plate.

[0015] According to a favorable embodiment, the cutting unit further comprises a rotating shaft, and the right end surface of each circular block is fixedly provided with a rotating shaft, and sprockets are fixedly sleeved on both rotating shafts, and the two sprockets are connected and matched by a chain.

[0016] According to a favorable embodiment, the front end face of the mating plate is provided with a limiting groove connected to the mating groove, and the width of the limiting groove is smaller than the diameter of the mating groove, and the rotating shaft is provided with a circumferential groove corresponding to the thread groove one by one and located on the left side of the corresponding thread groove.

[0017] According to a favorable embodiment, the cutting unit also includes a U-shaped bar, and a U-shaped bar corresponding to the thread groove one by one and opening toward the rear side is slidably sleeved on the two rotating shafts. The U-shaped bar is located on the right side of the corresponding thread groove, and a limiting bar is fixedly provided on the rear end face of the vertical section of the U-shaped bar, and a rectangular bar is fixedly provided on the right end face of the longitudinal section on the right side of the U-shaped frame. A card slot is opened on the rectangular bar, and the limit bar passes through the card slot. A triangular groove is opened on the front end face of the rectangular bar, which is connected to the card slot and is located on the left side of the card slot.

[0018] In summary, the present invention includes at least one of the following beneficial effects: First, the present invention forms a rectangular frame with four L-shaped frames together with an appropriate amount of frame plates selected according to the shape of the required cutting area, and the L-shaped frame and the frame plates are both close to the wall and installed on the wall. The U-shaped frame is manually pushed so that the U-shaped frame drives the disc saw to cut along the four sides of the rectangular frame. After completing the full circle movement, the cutting operation of the rectangular area is completed, and then the entire L-shaped frame and frame plates are removed, avoiding repeated installation and disassembly operations, reducing labor costs and improving the convenience of cutting operations. Secondly, the rectangular frame formed by assembly enables the two adjacent cutting tracks of the disc saw to remain vertical, which improves the cutting accuracy and ensures the stability of the disc saw movement.

[0019] 2. In the present invention, the friction between the nut and the mounting plate and the tightening strip 1 makes the mounting plate, the tightening strip 1 and the tightening strip 2 all fixed and limited, so any two adjacent tightening strips 1 and the two tightening strips 2 form a stable triangular structure with the corresponding L-shaped frame and the frame plate. The four triangular structures formed cooperate with the screws driven into the wall to improve the stability of the rectangular frame, thereby improving the accuracy and stability of the subsequent cutting process according to the movement of the rectangular frame.

[0020] 3. The present invention simplifies the assembly process of the rectangular frame by inserting the plug-in column into the corresponding plug-in groove, while ensuring the straightness of each side of the rectangular frame. At the same time, the rectangular frame can avoid the traditional tedious operation of repeatedly disassembling and assembling the linear guide rail, simplifying the operation process and improving convenience.

[0021] Fourth, in the present invention, the threaded cooperation between the threaded sections on the two rotating shafts and the matching grooves on the matching plates allows the two rotating shafts, the matching plates and the rectangular plates to self-lock to form a stable rectangular frame. Next, the limiting strip is inserted into the slot to divide the rectangular frame formed above into two rectangular frames again. The two rectangular frames improve the stability of the U-shaped frame and the disc saw during the moving cutting process, and improve the accuracy of the cutting trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A right side view of a prefabricated concrete wall cutting device provided according to an embodiment of the present invention is shown.

[0024] Figure 2 A schematic diagram of the three-dimensional structure among a mobile base, a frame unit and a cutting mechanism provided according to an embodiment of the present invention is shown.

[0025] Figure 3 A schematic diagram of the three-dimensional structure between the first and second tightening strips and the mounting plate provided according to an embodiment of the present invention is shown.

[0026] Figure 4 A schematic diagram of the three-dimensional structure among an L-shaped frame, a frame plate and plug-in columns provided according to an embodiment of the present invention is shown.

[0027] Figure 5 A front view of an L-shaped frame, a frame plate and plug-in columns provided according to an embodiment of the present invention is shown.

[0028] Figure 6 A schematic diagram of a three-dimensional structure among a U-shaped frame, a U-shaped bar and a rectangular plate provided according to an embodiment of the present invention is shown.

[0029] Figure 7 A schematic diagram of a partial cross-sectional three-dimensional structure between a limiting bar, a rectangular bar and a rotating shaft provided according to an embodiment of the present invention is shown.

[0030] The above drawings include the following reference numerals: 1, mobile base; 2, drive unit; 3, frame unit; 30, L-shaped frame; 31, frame plate; 32, tightening strip 1; 33, locking group; 330, rectangular groove; 331, nut; 34, plug-in groove; 340, plug-in column; 35, bolt; 350, mounting plate; 351, tightening strip 2; 352, connecting strip; 36, through hole; 4, track groove; 40, connecting groove; 5, cutting Cutting mechanism; 50, track block; 51, U-shaped frame; 510, disc saw; 52, cutting unit; 520, auxiliary block; 521, rectangular plate; 522, circular block; 523, rotating shaft; 524, matching plate; 525, threaded groove; 53, rotating shaft; 530, sprocket; 54, limiting groove; 540, circumferential groove; 55, U-shaped bar; 550, limiting bar; 551, rectangular bar; 552, card slot; 553, triangular groove. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a concrete prefabricated wall cutting device includes: a mobile base 1, a driving unit 2 is arranged on the lower end surface of the mobile base 1, and the driving unit 2 is an existing mobile device including moving wheels. A frame unit 3 is arranged on the mobile base 1.

[0033] The frame unit 3 includes four L-shaped frames 30 and a plurality of rectangular frame plates 31 arranged in a matrix, and all the L-shaped frames 30 and frame plates 31 together form a rectangular frame. The frame unit 3 also includes a tightening strip 32 and a locking group 33 for maintaining the shape of the rectangular frame.

[0034] The cutting mechanism 5 is a cutting mechanism 5, wherein the front end surfaces of all the L-shaped frames 30 and the frame plates 31 are provided with track grooves 4, and the cutting mechanism 5 includes a track block 50, and the track blocks 50 are slidably arranged in all the track grooves 4, and the front end surface of the track block 50 is provided with a U-shaped frame 51 with an opening toward the rear side for sliding back and forth through a transverse bar, and a disc saw 510 is rotatably arranged in the U-shaped area of ​​the U-shaped frame 51 through a driving shaft whose axis is perpendicular to its vertical section, and the cutting mechanism 5 also includes a cutting unit 52 for guiding the movement of the disc saw 510.

[0035] During operation, the driving unit 2 drives the moving base 1 to move backward through the moving wheels. During the backward movement, the two L-shaped frames 30 on the lower side are made to be close to the wall, and the spacing between the two L-shaped frames 30 is made to be a specified value. Then, the remaining two L-shaped frames 30 and all the frame plates 31 are assembled, and the L-shaped frames 30 and the frame plates 31 are made to press against each other, finally forming the required rectangular frame, and the L-shaped frames 30 and the frame plates 31 are locked and fixed by the locking group 33 to complete the splicing and fixing of the rectangular frame, and then the track block 50 and the disc saw 510 are installed in the track groove 4, and the U-shaped frame 51 is manually pushed so that the U-shaped frame 51 drives the disc saw 510 to cut along the four sides of the rectangular frame, and the wall is cut through four cutting operations. During the above cutting process, the cutting unit 52 works to guide the movement of the disc saw 510, thereby improving the stability and accuracy of the cutting process. After the cutting operation is completed, the track block 50 and the disc saw 510 are taken out, and finally the L-shaped frame 30 and the frame plate 31 are removed.

[0036] like Figure 4 and Figure 5 As shown, the frame unit 3 also includes a plug-in groove 34, and taking the lower L-shaped frame 30 on the left side and the adjacent frame plate 31 on the right side as an example, the right end face of the frame plate 31 and the right end face of the horizontal section of the L-shaped frame 30 are each provided with two plug-in grooves 34 distributed up and down and with horizontal axes, and the left end face of the frame plate 31 and the upper end face of the vertical section of the L-shaped frame 30 are both fixedly provided with two plug-in columns 340 with axes perpendicular to their corresponding end faces, and the plug-in columns 340 correspond to and cooperate with adjacent plug-in grooves 34.

[0037] like Figure 2 and Figure 3 As shown, the frame unit 3 also includes a bolt 35, and the upper end surface of the mobile base 1 is fixedly provided with a bolt 35 with a vertical axis, and two tightening bars 32 distributed up and down are rotatably sleeved on the bolt 35, and two mounting plates 350 distributed up and down and both located above the tightening bar 32 are sleeved on the bolt 35, and a tightening bar 2 351 is hingedly connected to the upper end surface of the mounting plate 350, and the outer side walls of the L-shaped frame 30 are fixedly provided with connecting bars 352, and the two tightening bars 32 are respectively hinged to the two lower connecting bars 352, and the two tightening bars 351 are respectively hinged to the two upper connecting bars 352.

[0038] like Figure 2 and Figure 3 As shown, the locking group 33 includes a rectangular groove 330, and the upper end surface of the mounting plate 350 is penetrated by a rectangular groove 330, and the bolt 35 passes through the rectangular groove 330. The thread on the bolt 35 is matched with a nut 331 for locking the clamping strip 32 and the mounting plate 350.

[0039] like Figure 1 and Figure 5As shown, the frame unit 3 further includes a through hole 36 , and the inner wall of the track groove 4 of the frame plate 31 and the inner wall of the track groove 4 of the L-shaped frame 30 are both provided with a through hole 36 whose axis extends from front to back.

[0040] When working, a corresponding number of frame plates 31 are selected according to the length and width of the required cutting area, and then the frame plates 31 on the upper and lower sides are installed between the corresponding two L-shaped frames 30 by plugging them into the corresponding plug-in slots 34 through the plug-in columns 340. The driving unit 2 works so that the mobile base 1 moves back until the two L-shaped frames 30 on the lower side and the frame plates 31 thereon are in close contact with the wall. It should be noted that the driving unit 2 stops moving after moving to the specified position, and due to the weight of the entire device and the friction between the driving unit 2 itself and the ground, the driving unit 2 and the mobile base are 1 stops moving to facilitate the subsequent assembly of the rectangular frame and cutting operations. A triangle is formed by the cooperation between the two abutting bars 32 and the corresponding two L-shaped frames 30 and the frame plate 31, and the triangle is parallel to the moving base 1. At this time, the vertical distances between the track grooves 4 of the vertical and horizontal sections of the L-shaped frame 30 and the required cutting path are both set values. Then, screws for preliminary fixing are driven into the through holes 36 of the two lower L-shaped frames 30 and the lower frame plate 31 to ensure the initial stability of the lower L-shaped frame 30 and the frame plate 31, which is convenient for installing the upper L-shaped frame 30 and the frame plate 31.

[0041] Then, move the mounting plate 350 so that the two upper L-shaped frames 30 are both in close contact with the wall, and assemble the frame plate 31 between the two upper L-shaped frames 30 and between the upper L-shaped frame 30 and the lower L-shaped frame 30 by inserting the plug-in columns 340 into the corresponding plug-in grooves 34. In this process, keep the L-shaped frame 30 and the frame plate 31 in close contact with the wall, and drive screws into the wall through the through holes 36 on the upper L-shaped frame 30 and the frame plate 31 to complete the initial fixation. Finally, use existing equipment such as an external wrench to fix it. The nut 331 is tightened onto the bolt 35, and the friction between the nut 331 and the mounting plate 350 and the tightening strip 1 32 makes the mounting plate 350, the tightening strip 1 32 and the tightening strip 2 351 all fixed in place, and the two adjacent tightening strips 1 32 and the two tightening strips 2 351 form a stable triangular structure, and the four triangular structures formed in conjunction with the screws driven into the wall improve the stability of the rectangular frame, thereby improving the accuracy and stability of the subsequent cutting process according to the movement of the rectangular frame.

[0042] In the above operation process, the rectangular frame assembly process is simplified by plugging the plug-in column 340 into the corresponding plug-in groove 34, while ensuring the straightness of each side of the rectangular frame. At the same time, the four-side cutting operation of the wall can be completed at one time through the rectangular frame, without the need to repeatedly disassemble and assemble the guide rail, thereby simplifying the operation process and improving convenience.

[0043] like Figure 4As shown, a connecting groove 40 connected to the corresponding track groove 4 is opened on the front end surface of the junction of the horizontal section and the vertical section of the L-shaped frame 30. The cross-section of the track groove 4 is a T-shape with the longitudinal section located in front of the transverse section, and the cross-section of the track block 50 is a T-shape that fits the track groove 4.

[0044] During operation, after the rectangular frame is installed, the track block 50 is placed into the track groove 4 through the connecting groove 40, and then the U-shaped frame 51 and the disc saw 510 are moved by moving the track block 50. In the process of the track block 50 moving along the track groove 4, the disc saw 510 works to cut the wall. The wall cutting operation is completed after the track block 50 moves a full circle.

[0045] like Figure 2 , Figure 6 and Figure 7 As shown, the cutting unit 52 includes an auxiliary block 520, and an auxiliary block 520 opposite to the track block 50 and in a T shape is slidably arranged in the track groove 4, and a rectangular plate 521 is fixedly arranged on the front end face of the auxiliary block 520, and two circular blocks 522 distributed up and down are rotatably penetrated on the rectangular plate 521, and a rotating shaft 523 with a horizontal axis is hingedly arranged on the left end face of the circular block 522, and a matching plate 524 is fixedly arranged on the front end face of the transverse strip, and a plurality of threaded grooves 525 equidistantly arranged along its axis are provided on the rotating shaft 523, and a matching groove threadably matched with the threaded groove 525 of the rotating shaft 523 is provided on the matching plate 524. It should be noted that the upper and lower ends of the matching plate 524 are made of elastic material.

[0046] like Figure 2 and Figure 6 As shown, the cutting unit 52 further includes a rotating shaft 53, and the right end surface of the circular block 522 is fixedly provided with a rotating shaft 53, and sprockets 530 are fixedly sleeved on the two rotating shafts 53, and the two sprockets 530 are connected and matched by a chain.

[0047] like Figure 6 and Figure 7 As shown, the front end face of the mating plate 524 is provided with a limiting groove 54 connected to the mating groove, and the width of the limiting groove 54 is smaller than the diameter of the mating groove. The rotating shaft 523 is provided with a circumferential groove 540 which corresponds one-to-one to the thread groove 525 and is located on the left side of the corresponding thread groove 525.

[0048] During operation, after the rectangular frame is installed, the track block 50 is placed into the track groove 4 through the connecting groove 40 on the left lower L-shaped frame 30, and the auxiliary block 520 is placed into the track groove 4 through the connecting groove 40 on the right lower L-shaped frame 30. Then, the two rotating shafts 523 on the rectangular plate 521 are rotated, and the part with the circumferential groove 540 on the rotating shaft 523 is moved into the matching groove through the limiting groove 54 on the matching plate 524. At this time, the two rotating shafts 523, the matching plate 524 and the rectangular plate 521 are rectangular. Then, the upper rotating shaft 53 is manually rotated, and the upper rotating shaft 53 is rotated. The side rotating shaft 53 drives the sprocket 530 thereon to rotate synchronously, and the transmission cooperation between the sprocket 530 chains makes the lower sprocket 530 drive the lower rotating shaft 53 to rotate synchronously, and the threaded cooperation between the threaded grooves 525 on the two rotating shafts 53 and the matching grooves on the matching plate 524 makes the matching plate 524 tend to move to the right, so that the two rotating shafts 523, the matching plate 524 and the rectangular plate 521 are self-locking to form a stable rectangular frame, which improves the stability of the subsequent track block 50 in the process of driving the U-shaped frame 51 and the disc saw 510 thereon to move and cut.

[0049] After completing the above operations, the external hydraulic cylinder works to make the U-shaped frame 51 drive the disc saw 510 to move backward, and the disc saw 510 moves backward to cut through the wall. Then, the rectangular frame composed of the rectangular plate 521 and the matching plate 524 is manually pushed, so that the U-shaped frame 51 and the disc saw 510 continue to move upward. During the upward movement, the disc saw 510 completes the cutting operation of the left vertical section. Then, the track block 50 moves to the upper horizontal section, and the above matching operation is released. The auxiliary block 520 and the rectangular plate 521 are moved to the horizontal section on the lower side of the rectangular frame. The above operation is repeated, and the matching plate 524 is moved to the right to complete the cutting operation of the upper horizontal section. Then, the track block 50 moves to the right vertical section of the rectangular frame, and the auxiliary block 520 moves to the left vertical section. The above operation is repeated to complete the cutting operation of the right vertical section. The track block 50 moves to the lower horizontal section of the rectangular frame, and the auxiliary block 520 moves to the upper horizontal section. The above operation is repeated to complete the cutting operation of the entire wall.

[0050] During the movement of the track block 50, the matching block moves in the same direction as the track block 50. The rectangular frame formed in the above process, the matching between the track block 50 and the track groove 4, and the matching between the matching block and the track groove 4 improve the stability of the track block 50 and the disc saw 510 during the moving cutting process.

[0051] It should be noted that, by cooperating with the threaded groove 525 at different positions on the rotating shaft 523, it is convenient to adapt to the process of moving and cutting the track groove 4 at different positions in the rectangular frame, thereby improving the adaptability of the equipment. That is, when the track block 50 moves in the vertical section of the rectangular frame, the cooperating groove cooperates with the threaded groove 525 on the rotating shaft 523 close to the rectangular plate 521; when the track block 50 moves in the horizontal section of the rectangular frame, the cooperating groove cooperates with the threaded groove 525 on the rotating shaft 523 away from the rectangular plate 521.

[0052] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the cutting unit 52 also includes a U-shaped bar 55, and the two rotating shafts 523 are slidably sleeved together with a U-shaped bar 55 corresponding to the thread groove 525 and opening toward the rear side. The U-shaped bar 55 is located on the right side of the corresponding thread groove 525, and a limiting bar 550 is fixedly provided on the rear end face of the vertical section of the U-shaped bar 55. A rectangular bar 551 is fixedly provided on the right end face of the right longitudinal section of the U-shaped frame 51. A slot 552 is provided on the rectangular bar 551, and the limiting bar 550 passes through the slot 552. A triangular groove 553 is provided on the front end face of the rectangular bar 551, which is connected to the slot 552 and is located on the left side of the slot 552.

[0053] During operation, when the rotating shaft 523 is installed in the matching groove, the two rotating shafts 523 drive the U-shaped bar 55 and the limit bar 550 thereon to move synchronously, and at the same time, the U-shaped bar 55 is moved so that the U-shaped bar 55 and the limit bar 550 are in a position where they can cooperate with the rectangular bar 551, and the limit bar 550 is inserted into the slot 552. The cutting process of the U-shaped frame 51 is guided by the cooperation between the limit bar 550 and the slot 552, and the rectangular frame formed by the matching plate 524, the rectangular plate 521 and the two rotating shafts 523 is divided into two rectangular frames again, which further improves the stability of the U-shaped frame 51 and the disc saw 510 during the moving cutting process and improves the accuracy of the cutting trajectory.

[0054] Secondly, the triangular groove 553 is provided to facilitate the limiting bar 550 to slide from the inner wall of the triangular groove 553 and be inserted into the locking groove 552 when the U-shaped bar 55 drives the limiting bar 550 to rotate backward.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated concrete wall cutting device, characterized in that: include: A mobile base (1), wherein a driving unit (2) is arranged on the lower end surface of the mobile base (1), and a frame unit (3) is arranged on the mobile base (1); The frame unit (3) comprises four L-shaped frames (30) arranged in a matrix and a plurality of rectangular frame plates (31), and all the L-shaped frames (30) and the frame plates (31) together form a rectangular frame. The frame unit (3) also comprises a first tightening strip (32) and a locking group (33) for maintaining the shape of the rectangular frame stable. A cutting mechanism (5), wherein the front end surfaces of all the L-shaped frames (30) and the frame plate (31) are provided with a track groove (4), the cutting mechanism (5) comprises a track block (50), the track blocks (50) are slidably arranged in all the track grooves (4), the front end surface of the track block (50) is provided with a U-shaped frame (51) with an opening facing the rear side for sliding forward and backward through a transverse bar, a disc saw (510) is rotatably arranged in the U-shaped region of the U-shaped frame (51) through a drive shaft whose axis is perpendicular to the vertical section thereof, and the cutting mechanism (5) further comprises a cutting unit (52) for guiding the movement of the disc saw (510); The frame unit (3) further comprises a plug-in slot (34), the right end surface of the frame plate (31) and the right end surface of the horizontal section of the L-shaped frame (30) are both provided with two plug-in slots (34) distributed up and down and with horizontal axes, the left end surface of the frame plate (31) and the upper end surface of the vertical section of the L-shaped frame (30) are both fixedly provided with two plug-in columns (340) with axes perpendicular to their corresponding end surfaces, and the plug-in columns (340) are correspondingly matched with adjacent plug-in slots (34); The frame unit (3) further comprises a bolt (35), the upper end surface of the movable base (1) is fixedly provided with a bolt (35) with a vertical axis, two vertically distributed abutting strips (32) are rotatably sleeved on the bolt (35), two vertically distributed mounting plates (350) are sleeved on the bolt (35), and the mounting plates (350) are both located above the vertically distributed abutting strips (351) are hingedly connected to the upper end surface of the mounting plates (350), and the outer side walls of the L-shaped frame (30) are fixedly provided with connecting strips (352), the two abutting strips (32) are respectively hingedly connected to the two lower connecting strips (352), and the two abutting strips (351) are respectively hingedly connected to the two upper connecting strips (352); The locking group (33) comprises a rectangular groove (330), the upper end surface of the mounting plate (350) is penetrated by a rectangular groove (330), the bolt (35) penetrates the rectangular groove (330), and the thread on the bolt (35) is matched with a nut (331) for locking the clamping strip (32) and the mounting plate (350); The frame unit (3) further comprises a through hole (36), and the inner wall of the track groove (4) of the frame plate (31) and the inner wall of the track groove (4) of the L-shaped frame (30) are both provided with a through hole (36) whose axis extends from front to rear; A connecting groove (40) is provided on the front end surface of the junction between the horizontal section and the vertical section of the L-shaped frame (30) and is connected to the corresponding track groove (4); the cross section of the track groove (4) is a T-shape with the longitudinal section located in front of the transverse section; and the cross section of the track block (50) is a T-shape that fits the track groove (4); The cutting unit (52) comprises an auxiliary block (520), the track groove (4) is slidably provided with an auxiliary block (520) opposite to the track block (50) and in a T shape, the front end surface of the auxiliary block (520) is fixedly provided with a rectangular plate (521), two circular blocks (522) distributed up and down are rotatably penetrated on the rectangular plate (521), the left end surface of the circular block (522) is hingedly provided with a rotating shaft (523) with a horizontal axis, the front end surface of the transverse strip is fixedly provided with a matching plate (524), the rotating shaft (523) is provided with a plurality of thread grooves (525) arranged equidistantly along the axis thereof, and the matching plate (524) is provided with a matching groove threadably matched with the thread groove (525) of the rotating shaft (523); The cutting unit (52) further comprises a rotating shaft (53), and the right end surface of each circular block (522) is fixedly provided with a rotating shaft (53), and sprockets (530) are fixedly sleeved on the two rotating shafts (53), and the two sprockets (530) are connected and matched by a chain; The front end surface of the matching plate (524) is provided with a limiting groove (54) connected to the matching groove, and the width of the limiting groove (54) is smaller than the diameter of the matching groove. The rotating shaft (523) is provided with a circumferential groove (540) corresponding to the thread groove (525) one by one and located on the left side of the corresponding thread groove (525).

2. The prefabricated concrete wall cutting device according to claim 1, characterized in that: The cutting unit (52) further comprises a U-shaped bar (55), on which the two rotating shafts (523) are slidably sleeved together with U-shaped bars (55) corresponding to the thread grooves (525) one by one and with their openings facing the rear side, the U-shaped bar (55) being located on the right side of the corresponding thread groove (525), a limiting bar (550) being fixedly arranged on the rear end face of the vertical section of the U-shaped bar (55), a rectangular bar (551) being fixedly arranged on the right end face of the right longitudinal section of the U-shaped frame (51), a clamping groove (552) being provided on the rectangular bar (551), the limiting bar (550) penetrating the clamping groove (552), and a triangular groove (553) being communicated with the clamping groove (552) and located on the left side of the clamping groove (552) being provided on the front end face of the rectangular bar (551).

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