Cutting device for building construction

Abstract

The invention discloses a cutting device for building construction, and particularly relates to the technical field of cutting, the cutting device comprises an inclined plate, a controller, a plurality of inclined frames and a synchronous inclined limiting mechanism; the synchronous inclination limiting mechanism comprises a fixing plate, a connecting strip, a plurality of inclination frames, a building workpiece, a butt joint workpiece, a cutting motor, a movable electric cylinder, a sleeving supporting plate, a cutting circular saw, a sleeving supporting plate, a limiting electric cylinder and an extrusion electric cylinder. Through the synchronous inclined limiting mechanism, a cutting motor drives a cutting circular saw to achieve inclined moving operation along the inclined face of a fixing plate, it is guaranteed that multiple building workpieces can be synchronously inclined for limiting operation, synchronous limiting cutting of the building workpieces can be rapidly achieved, and the accurate cutting efficiency is greatly improved; therefore, the problem that synchronous precise cutting efficiency is greatly reduced due to the fact that synchronous limiting cutting of all the materials is difficult to achieve according to the specified distance during cutting is solved.

Description

Technical Field

[0001] The present invention relates to the field of cutting technology, and more particularly to a cutting device for building construction. Background Art

[0002] A circular saw cutting device for construction, namely a construction circular saw or a construction template circular saw machine, is mainly used for cutting materials in construction. The circular saw cutting device is often used for cutting steel in construction.

[0003] In the existing public documents, the patent announcement number CN118437978A discloses a plate cutting device for construction, which adjusts the height and direction of the cutting mechanism through an adjustment mechanism, so that when cutting the building plate, the plate can be cut in the X-axis or Y-axis direction according to actual needs, and the cutting direction is increased. During the cutting process, only the driving mechanism needs to be used to control the movement of the cutting mechanism, without moving the plate or the device, making the cutting operation more convenient. However, the patent has the following defects.

[0004] When construction materials are in use, a cutting device is required to perform cutting operations on the construction materials. During cutting, it is difficult to achieve synchronous limited cutting of each material at a specified distance, resulting in a significant decrease in the efficiency of synchronous and precise cutting. Therefore, a cutting device for construction is needed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: A cutting device for construction, comprising an inclined plate, a controller and a plurality of inclined frames, wherein the controller is fixed on one side of the inclined plate, the plurality of inclined frames are fixedly connected to an inclined surface of the inclined plate, and a synchronous inclination limiting mechanism is installed at the top of the inclined frame; the synchronous inclination limiting mechanism comprises a fixed plate installed at the top of the inclined frame, the plurality of inclined frames are fixedly connected to the fixed plate, a connecting strip is fixedly installed on one side of the fixed plate, a plurality of inclined frames are fixedly connected to the lower inclined surface of the connecting strip, the inner wall of each inclined frame is slidably connected to a building workpiece, and a docking workpiece is fixedly connected to the bottom end of the building workpiece; a cutting motor is slidably installed on the upper inclined surface of the fixed plate, a moving electric cylinder is fixedly installed on one side of the outer wall of the cutting motor, a sleeve support plate is fixedly connected to the outer wall of the moving electric cylinder, and the sleeve support plate is fixedly connected to the fixed plate; a cutting circular saw is fixedly installed at the output end of the cutting motor, a limiting electric cylinder is fixedly installed on the upper surface of the sleeve support plate, and an extrusion electric cylinder is fixedly installed on the upper surface of the limiting electric cylinder.

[0006] Preferably, the plurality of tilting frames are arranged in a rectangular and equidistant manner, and the tilting frames are used to support the fixed plate. The plurality of tilting frames are arranged in an equidistant manner from front to back, and the inner wall of the tilting frame and the outer wall of the building workpiece are both smooth surfaces. A mounting plate is fixedly mounted at the bottom end of the tilting plate, and a plurality of mounting holes are opened on the inner wall of the mounting plate, and the cross-sectional shapes of the plurality of mounting holes are all circular.

[0007] When the technology is used, the tilting plate supports multiple tilting frames, the fixed plate supports the sleeve support plate, and the cutting motor starts the cutting circular saw transmission, so that the cutting motor drives the cutting circular saw to realize the tilting movement operation along the inclined surface of the fixed plate. The fixed plate supports the connecting strip, and the tilting frame can realize the tilting guide limit of the construction workpiece, so that multiple construction workpieces can be synchronously tilted for limit operation.

[0008] Preferably, the output end of the limit electric cylinder is equipped with a precise limit cutting mechanism; the precise limit cutting mechanism includes a push shaft fixedly installed at the output end of the limit electric cylinder, and a distance sensor is provided on one side of the limit electric cylinder, the distance sensor is fixedly connected to the sleeve support plate, one end of the push shaft is fixedly connected to a support bar, and the limit bar is fixedly installed at the bottom end of the support bar; the precise limit cutting mechanism also includes a sensing block, a sliding frame, a screw, a reduction motor, a sleeve block, a fixed bar and a scraping bar; the sensing block is located on one side of the distance sensor, the sliding frame is fixed on one side of the support bar, the screw is rotatably connected to the inner wall of the sliding frame, the reduction motor is fixedly installed at one end of the sliding frame, and the reduction motor is used to drive the screw to rotate. The sleeve block is threadedly connected to the outer wall of the screw, and the reduction motor is slidably connected to the sliding frame, the fixed bar is fixedly connected to the bottom end of the sleeve block, the scraping bar is fixedly installed at the bottom end of the fixed bar, and the scraping bar is slidably connected to the limit bar. The outer wall of the sleeve block and the inner wall of the sliding frame are both smooth surfaces, and the fixing bar and the screw rod are both made of stainless steel. The cross-sectional shape of the scraping bar is triangular, and the outer wall of the scraping bar is smooth.

[0009] When this technology is in use, the limit electric cylinder pushes the push shaft to move down and tilt, and the support bar drives the limit bar to move down and tilt. The screw drives the sleeve block to move down and tilt, and the fixed bar drives the scraper bar to move down and tilt. When the distance value sensed by the distance sensor is the same as the distance set by the controller, the limit bar can move to the specified limit position, the reduction motor drives the screw to reverse, the screw drives the sleeve block to move left under the action of the thread transmission force, and the fixed bar drives the scraper bar to move left, realizing the tilt cleaning operation on the side of the limit bar.

[0010] Preferably, the output end of the extrusion electric cylinder is equipped with a synchronous fixed force limit mechanism; the synchronous fixed force limit mechanism includes a pressure sensor fixedly installed at the output end of the extrusion electric cylinder, the sensing end of the pressure sensor is fixedly connected with a sleeve frame bar, the top of the sleeve frame bar is fixedly installed with a pressure plate, and the inner wall of the pressure plate is provided with a plurality of guide grooves; a plurality of guide frames are fixedly installed on one side of each of the pressure plates, an extrusion strip plate is installed on one side of the guide frame, and the plurality of guide frames are fixedly connected to the extrusion strip plate, a support bar is installed on one side of the extrusion strip plate, and the sleeve frame bar and the extrusion strip plate are fixedly connected to the support bar. The plurality of guide grooves are arranged equidistantly from front to back, and the inner wall of the guide groove is a smooth surface.

[0011] The vertical cross-section of the guide frame is concave, and a plurality of the guide frames are arranged in sequence and equidistantly from front to back, and the support strips are used to support the extruded strip plates.

[0012] When this technology is used, the extrusion electric cylinder is started to push the pressure sensor to move downward, and the sleeve frame strip drives the pressure plate to move downward, so that the pressure plate allows multiple guide grooves to be inserted into the outer walls of multiple building workpieces. The support strip drives the extrusion strip plate to move downward, so that the building workpiece can be squeezed on the extrusion strip plate along the inner wall of the guide frame, so that the extrusion strip plate can achieve synchronous extrusion of multiple building workpieces. When the pressure value sensed by the pressure sensor is the same as the pressure value set by the controller, the extrusion electric cylinder is closed by the controller.

[0013] Technical effects and advantages of the present invention: 1. The present invention adopts a synchronous tilting and limiting mechanism, wherein the mounting plate supports the tilting plate, the tilting plate supports a plurality of tilting frames, the fixed plate supports the sleeve support plate, and the moving electric cylinder drives the cutting motor, and the cutting motor drives the cutting circular saw to realize the tilting and moving operation along the inclined surface of the fixed plate, thereby ensuring that a plurality of construction workpieces can be synchronously tilted for limiting operation, and each construction workpiece can quickly realize synchronous limited cutting, thereby greatly improving the efficiency of precise cutting.

[0014] 2. The present invention adopts a precise limit cutting mechanism. The limit electric cylinder pushes the push shaft to move tilted downward, the push shaft drives the support bar to move tilted downward, the support bar drives the limit bar to move tilted downward, the screw drives the sleeve block to move tilted downward, the sleeve block causes the fixed bar to move tilted downward, when the distance value sensed by the distance sensor is the same as the distance set by the controller, the limit bar can be moved to the specified limit position, and precise limit operation can be achieved for multiple docking workpieces, thereby greatly improving the efficiency of precise cutting.

[0015] 3. The present invention adopts a synchronous fixed force limiting mechanism. Multiple construction workpieces are respectively inserted into the interior of the tilting frame. The pressure sensor is pushed to tilt downward by starting the extrusion electric cylinder. The sleeve frame strip drives the pressure plate to tilt downward. The pressure plate allows multiple guide grooves to be inserted into the outer walls of multiple construction workpieces respectively. The support strip drives the extrusion strip plate to tilt downward. The construction workpiece can be squeezed on the extrusion strip plate along the inner wall of the guide frame, so that the extrusion strip plate can achieve synchronous extrusion of multiple construction workpieces. When the pressure value sensed by the pressure sensor is the same as the pressure value set by the controller, the extrusion electric cylinder is closed by the controller, so that multiple docking workpieces are evenly squeezed on the limit strip, thereby greatly improving the efficiency of precise cutting.

[0016] The interaction of the above multiple effects first enables the limit bar to move to the specified limit position, achieving precise limit operation on multiple docking workpieces, and then makes the pressure value sensed by the pressure sensor the same as the pressure value set by the controller, so that multiple docking workpieces are evenly squeezed on the limit bar, and finally the limit bar can move to the specified limit position, achieving precise limit operation on multiple docking workpieces. In summary, it ensures that multiple construction workpieces can be synchronously tilted for limit operation, and synchronously perform precision limit operation, and each construction workpiece can quickly achieve synchronous limit cutting, which greatly improves the efficiency of precise cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the cutting device for construction of the present invention.

[0018] Figure 2 It is a schematic diagram of the partial structure of the connection between the sleeve support plate and the movable electric cylinder of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the cutting device for construction of the present invention when viewed from above.

[0020] Figure 4 It is a schematic diagram of the partial structure of the connection between the limit electric cylinder and the extrusion electric cylinder of the present invention.

[0021] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0022] Figure 6 It is a schematic diagram of the top view of the structure of the cutting device for construction of the present invention.

[0023] Figure 7 It is a schematic diagram of the partial structure of the synchronous fixed force limiting mechanism of the present invention from a top view.

[0024] Figure 8 It is a schematic diagram of the partial structure of the connection between the sleeve frame strip and the pressing plate of the present invention.

[0025] The accompanying drawings are marked as follows: 1. tilting plate; 2. controller; 3. tilting frame; 4. fixing plate; 5. connecting strip; 6. tilting frame; 7. building workpiece; 8. cutting motor; 9. moving electric cylinder; 10. socket support plate; 11. cutting circular saw; 12. limit electric cylinder; 13. extrusion electric cylinder; 14. mounting plate; 15. mounting hole; 16. docking workpiece; 17. distance sensor; 18. push shaft; 19. support strip; 20. limit strip; 21. induction block; 22. sliding frame; 23. screw; 24. reduction motor; 25. socket block; 26. fixing strip; 27. scraping strip; 28. pressure sensor; 29. ​​socket frame strip; 30. pressure plate; 31. guide groove; 32. guide frame; 33. extrusion strip plate; 34. support strip. DETAILED DESCRIPTION

[0026] 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.

[0027] As attached Figure 1-8 A cutting device for construction is shown, which is provided with a synchronous tilting limit mechanism, a precise limit cutting mechanism, and a synchronous fixed force limit mechanism. The setting of each mechanism can ensure that multiple construction workpieces 7 can be synchronously tilted to perform limit operations, as well as synchronously perform precision limit operations. Each construction workpiece 7 can quickly achieve synchronous limit cutting, which greatly improves the efficiency of precise cutting. The specific structural settings of each mechanism are as follows.

[0028] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 4 As shown, the controller 2 is fixed on one side of the tilting plate 1, and a plurality of tilting frames 3 are fixedly connected to an inclined surface of the tilting plate 1, and a synchronous tilting limit mechanism is installed on the top of the tilting frame 3.

[0029] The synchronous tilting limit mechanism includes a fixed plate 4 installed on the top of the tilting frame 3, and multiple tilting frames 3 are fixedly connected to the fixed plate 4. A connecting strip 5 is fixedly installed on one side of the fixed plate 4, and multiple tilting frames 6 are fixedly connected to the lower inclined surface of the connecting strip 5. The inner wall of each tilting frame 6 is slidably connected with a building workpiece 7, and a docking workpiece 16 is fixedly connected to the bottom end of the building workpiece 7; a cutting motor 8 is slidably installed on the upper inclined surface of the fixed plate 4, and a moving electric cylinder 9 is fixedly installed on one side of the outer wall of the cutting motor 8. The outer wall of the moving electric cylinder 9 is fixedly connected with a sleeve support plate 10, and the sleeve support plate 10 is fixedly connected to the fixed plate 4; a cutting circular saw 11 is fixedly installed at the output end of the cutting motor 8; a limiting electric cylinder 12 is fixedly installed on the upper surface of the sleeve support plate 10, and an extrusion electric cylinder 13 is fixedly installed on the upper surface of the limiting electric cylinder 12.

[0030] In this technical solution, as shown in the attached Figure 1 As shown, a mounting plate 14 is fixedly installed at the bottom end of the inclined plate 1, and a plurality of mounting holes 15 are opened on the inner wall of the mounting plate 14. The cross-sectional shapes of the plurality of mounting holes 15 are all circular, so that bolts can be inserted into the mounting holes 15, so that the mounting plate 14 is fixed on the base, and the inclined plate 1 is supported by the mounting plate 14, thereby greatly improving the stability of the inclined plate 1.

[0031] In this technical solution, as shown in the attached Figure 4 - Attachment Figure 6 As shown, a precise limit cutting mechanism is installed at the output end of the limit electric cylinder 12; the precise limit cutting mechanism includes a push shaft 18 fixedly installed at the output end of the limit electric cylinder 12, and a distance sensor 17 is provided on one side of the limit electric cylinder 12, the distance sensor 17 is fixedly connected to the sleeve support plate 10, one end of the push shaft 18 is fixedly connected to a support bar 19, and a limit bar 20 is fixedly installed at the bottom end of the support bar 19; the precise limit cutting mechanism also includes a sensing block 21, a sliding frame 22, a screw 23, a reduction motor 24, a sleeve block 25, a fixed bar 26 and a scraper bar 27.

[0032] The sensing block 21 is located on one side of the distance sensor 17, the sliding frame 22 is fixed on one side of the support bar 19, the screw 23 is rotatably connected to the inner wall of the sliding frame 22, and the reduction motor 24 is fixedly installed at one end of the sliding frame 22, and the reduction motor 24 is used to drive the screw 23 to rotate; the sleeve block 25 is threadedly connected to the outer wall of the screw 23, and the reduction motor 24 and the sliding frame 22 are slidably connected, the fixed bar 26 is fixedly connected to the bottom end of the sleeve block 25, and the scraper bar 27 is fixedly installed at the bottom end of the fixed bar 26, and the scraper bar 27 is slidably connected to the limit bar 20. The outer wall of the sleeve block 25 and the inner wall of the sliding frame 22 are both smooth surfaces, and the fixed bar 26 and the screw 23 are both made of stainless steel. The cross-sectional shape of the scraper bar 27 is a triangle, and the outer wall of the scraper bar 27 is a smooth surface.

[0033] In this technical solution, as shown in the attached Figure 7 - Attachment Figure 8 As shown, a synchronous fixed force limiting mechanism is installed at the output end of the extrusion electric cylinder 13; the synchronous fixed force limiting mechanism includes a pressure sensor 28 fixedly installed at the output end of the extrusion electric cylinder 13, the sensing end of the pressure sensor 28 is fixedly connected to a sleeve frame bar 29, a pressure plate 30 is fixedly installed at the top of the sleeve frame bar 29, and a plurality of guide grooves 31 are provided on the inner wall of the pressure plate 30; a plurality of guide frames 32 are fixedly installed on one side of each pressure plate 30, an extrusion strip plate 33 is installed on one side of the guide frame 32, the plurality of guide frames 32 are fixedly connected to the extrusion strip plate 33, a support bar 34 is installed on one side of the extrusion strip plate 33, and the sleeve frame bar 29 and the extrusion strip plate 33 are fixedly connected to the support bar 34.

[0034] The guide grooves 31 are arranged equidistantly from front to back, and the inner wall of the guide grooves 31 is a smooth surface. The vertical cross-section of the guide frame 32 is concave, and the guide frames 32 are arranged equidistantly from front to back. The support bar 34 is used to support the extrusion strip plate 33.

[0035] The use principle of the cutting device for construction of the present invention is as follows: Step 1: During installation, insert bolts into the mounting holes 15 so that the mounting plate 14 is fixed on the base. The mounting plate 14 supports the tilting plate 1, the tilting plate 1 supports multiple tilting frames 3, and the tilting frames 3 support the fixed plate 4, thereby increasing the stability of the fixed plate 4.

[0036] Step 2: During precise limit cutting, the limit electric cylinder 12 is started through the controller 2, and the limit electric cylinder 12 pushes the push shaft 18 to move downward, and the push shaft 18 drives the support bar 19 to move downward, and the support bar 19 drives the limit bar 20 to move downward. At the same time, the slide frame 22 drives the screw rod 23 to move downward, and the screw rod 23 drives the sleeve block 25 to move downward, and the sleeve block 25 makes the fixed bar 26 move downward, and the fixed bar 26 drives the scraper bar 27 to move downward. The support bar 19 will drive the induction block 21 to move downward, and the induction block 21 can be away from the distance sensor 17, and the distance can be sensed by the distance sensor 17. When the distance value sensed by the distance sensor 17 is the same as the distance set by the controller 2, the limit bar 20 can move to the specified limit position, so that the limit bar 20 can achieve precise limit operation on multiple docking workpieces 16.

[0037] At the same time, the controller 2 starts the reduction motor 24, which drives the screw 23 to reverse, and the screw 23 drives the sleeve block 25 to move leftward under the action of the thread transmission force, and the sleeve block 25 drives the fixed bar 26 to move leftward. The fixed bar 26 drives the scraping bar 27 to move leftward, and the scraping bar 27 performs limited scraping along the limit bar 20, thereby achieving an inclined cleaning operation on the side of the limit bar 20.

[0038] Step 3: When the synchronous fixed force is limited, multiple construction workpieces 7 are respectively inserted into the tilting frame 6, and the pressure sensor 28 is pushed to tilt downward by starting the extrusion electric cylinder 13, and the pressure sensor 28 drives the sleeve frame bar 29 to tilt downward, and the sleeve frame bar 29 drives the pressing plate 30 to tilt downward, and the pressing plate 30 makes multiple guide grooves 31 respectively inserted into the outer walls of multiple construction workpieces 7. The sleeve frame bar 29 drives the support bar 34 to tilt downward, and the support bar 34 drives the extrusion strip 33 to tilt downward, and the extrusion strip 33 drives multiple guide frames 32 to tilt downward, so that the construction workpiece 7 can be squeezed on the extrusion strip 33 along the inner wall of the guide frame 32, so that the extrusion strip 33 can realize synchronous extrusion of multiple construction workpieces 7. When the pressure value sensed by the pressure sensor 28 is the same as the pressure value set by the controller 2, the extrusion electric cylinder 13 is closed by the controller 2, so that multiple construction workpieces 7 can drive multiple docking workpieces 16 to be evenly squeezed on the limit bar 20, and the synchronous limit operation is performed through the limit bar 20.

[0039] Step 4: When the synchronous tilting is limited, the installation plate 14 supports the tilting plate 1, the tilting plate 1 supports multiple tilting frames 3, the tilting frames 3 support the fixed plate 4, the fixed plate 4 supports the sleeve support plate 10, and the moving electric cylinder 9 pushes the cutting motor 8, the cutting motor 8 starts the cutting circular saw 11 to drive, so that the cutting motor 8 drives the cutting circular saw 11 to achieve the tilting movement operation along the inclined surface of the fixed plate 4. At the same time, the fixed plate 4 supports the connecting strip 5, the connecting strip 5 supports multiple tilting frames 6, and the tilting frames 6 can achieve the tilting guide limit for the building workpiece 7, so as to ensure that the multiple building workpieces 7 can be synchronously tilted for limit operation.

[0040] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting device for construction, comprising an inclined plate (1), a controller (2) and a plurality of inclined frames (3), wherein the controller (2) is fixed to one side of the inclined plate (1), and the plurality of inclined frames (3) are all fixedly connected to an inclined surface of the inclined plate (1), characterized in that: A synchronous tilt limiting mechanism is installed at the top end of the tilting frame (3); The synchronous tilting limit mechanism comprises a fixing plate (4) mounted on the top of the tilting frame (3), a plurality of the tilting frames (3) are fixedly connected to the fixing plate (4), a connecting strip (5) is fixedly mounted on one side of the fixing plate (4), a plurality of tilting frames (6) are fixedly connected to the lower tilting surface of the connecting strip (5), a building workpiece (7) is slidably connected to the inner wall of each of the tilting frames (6), and a docking workpiece (16) is fixedly connected to the bottom end of the building workpiece (7); A cutting motor (8) is slidably mounted on the upper inclined surface of the fixed plate (4); a movable electric cylinder (9) is fixedly mounted on one side of the outer wall of the cutting motor (8); a sleeve support plate (10) is fixedly connected to the outer wall of the movable electric cylinder (9); and the sleeve support plate (10) is fixedly connected to the fixed plate (4); A cutting circular saw (11) is fixedly mounted on the output end of the cutting motor (8); A limit electric cylinder (12) is fixedly mounted on the upper surface of the sleeve support plate (10), and an extrusion electric cylinder (13) is fixedly mounted on the upper surface of the limit electric cylinder (12).

2. The cutting device for construction according to claim 1, characterized in that: The plurality of tilting frames (3) are arranged in a rectangular and equidistant manner, and the tilting frames (3) are used to support the fixing plate (4).

3. The cutting device for construction according to claim 1, characterized in that: The plurality of inclined frames (6) are arranged in sequence and at equal intervals from front to back, and the inner wall of the inclined frame (6) and the outer wall of the building workpiece (7) are both smooth surfaces.

4. The cutting device for construction according to claim 1, characterized in that: A mounting plate (14) is fixedly mounted on the bottom end of the inclined plate (1), and a plurality of mounting holes (15) are formed on the inner wall of the mounting plate (14), wherein the cross-sectional shapes of the plurality of mounting holes (15) are all circular.

5. The cutting device for construction according to claim 1, characterized in that: The output end of the limit electric cylinder (12) is equipped with a precise limit cutting mechanism; The precise position-limiting cutting mechanism comprises a push shaft (18) fixedly mounted on the output end of the position-limiting electric cylinder (12), and a distance sensor (17) is provided on one side of the position-limiting electric cylinder (12), the distance sensor (17) is fixedly connected to the sleeve support plate (10), one end of the push shaft (18) is fixedly connected to a support bar (19), and a position-limiting bar (20) is fixedly mounted on the bottom end of the support bar (19); The precise position-limiting cutting mechanism further comprises a sensing block (21), a sliding frame (22), a screw rod (23), a reduction motor (24), a sleeve block (25), a fixing bar (26) and a scraping bar (27); The sensing block (21) is located on one side of the distance sensor (17); the sliding frame (22) is fixed on one side of the support bar (19); the screw rod (23) is rotatably connected to the inner wall of the sliding frame (22); the reduction motor (24) is fixedly mounted on one end of the sliding frame (22); and the reduction motor (24) is used to drive the screw rod (23) to rotate; The sleeve block (25) is threadedly connected to the outer wall of the screw rod (23), and the reduction motor (24) is slidably connected to the slide frame (22). The fixing bar (26) is fixedly connected to the bottom end of the sleeve block (25). The scraping bar (27) is fixedly installed at the bottom end of the fixing bar (26), and the scraping bar (27) is slidably connected to the limit bar (20).

6. The cutting device for construction according to claim 5, characterized in that: The outer wall of the sleeve block (25) and the inner wall of the slide frame (22) are both smooth surfaces, and the fixing strip (26) and the screw rod (23) are both made of stainless steel.

7. The cutting device for construction according to claim 5, characterized in that: The cross-sectional shape of the scraping strip (27) is triangular, and the outer wall of the scraping strip (27) is a smooth surface.

8. The cutting device for construction according to claim 1, characterized in that: The output end of the extrusion electric cylinder (13) is equipped with a synchronous fixed force limiting mechanism; The synchronous fixed force limiting mechanism comprises a pressure sensor (28) fixedly mounted on the output end of the extrusion electric cylinder (13); the sensing end of the pressure sensor (28) is fixedly connected to a sleeve frame bar (29); a pressure plate (30) is fixedly mounted on the top of the sleeve frame bar (29); and a plurality of guide grooves (31) are formed on the inner wall of the pressure plate (30); A plurality of guide frames (32) are fixedly mounted on one side of each of the pressing plates (30); an extrusion strip plate (33) is mounted on one side of the guide frame (32); the plurality of guide frames (32) are fixedly connected to the extrusion strip plate (33); a support bar (34) is mounted on one side of the extrusion strip plate (33); and the sleeve frame bar (29) and the extrusion strip plate (33) are fixedly connected to the support bar (34).

9. The cutting device for construction according to claim 8, characterized in that: The plurality of guide grooves (31) are arranged in sequence and at equal intervals from front to back, and the inner walls of the guide grooves (31) are smooth surfaces.

10. The cutting device for construction according to claim 8, characterized in that: The vertical cross-section of the guide frame (32) is concave, and a plurality of the guide frames (32) are arranged in sequence and equidistantly from front to back, and the support strips (34) are used to support the extruded strip plates (33).

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