A concrete slab sizing and cutting apparatus and method of operation thereof
By designing a concrete slab sizing cutting device, the problems of batch cutting and wire tension adjustment were solved, achieving efficient and stable concrete slab cutting, improving cutting quality and wire lifespan, and reducing cracking and dust pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN ROAD & BRIDGE CONSTR GROUP
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-16
Smart Images
Figure CN120480767B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete construction cutting and processing technology, specifically a concrete slab sizing cutting device and its working method. Background Technology
[0002] Concrete slabs are basic structures or components in building construction and various engineering structures. They are classified into square slabs, round slabs and irregular shaped slabs according to their plan shape. The bottom of a concrete slab is a special case, so the bottom needs to be supported when it is cut.
[0003] The prior art discloses a Chinese patent with application number CN202310306595.2, which discloses a cutting device for precast concrete components. The invention discloses that the fixed component, which is symmetrically arranged front and rear, can limit and fix the cutting point through the cooperation of a fixed component and a moving component, so as to prevent the phenomenon of local chipping in the middle of the precast concrete component during the cutting process, thereby affecting the cutting effect.
[0004] Although the above-mentioned device can press and fix precast concrete components during cutting, it still has some drawbacks in use:
[0005] 1. When the concrete is cut by line, it is impossible to cut concrete slabs of different widths into batches of equal specifications, and water spraying is also required on the outside of the concrete during the line cutting process.
[0006] 2. Since the tension of the wire has a crucial impact on the cutting quality when cutting concrete online, the tension of the wire needs to be adjusted accordingly. Summary of the Invention
[0007] The purpose of this invention is to provide a concrete slab cutting device and its working method to solve the problems of batch cutting of concrete slabs and rapid adjustment of wires mentioned in the background art.
[0008] The objective of this invention can be achieved through the following technical solutions:
[0009] A concrete slab sizing cutting device includes a convex plate with limiting units on both sides. A concrete slab to be cut is placed on the upper surface of the convex plate. A rear frame is fixedly installed on the rear side of the convex plate. A fixing plate is fixedly installed on one side of the top of the rear frame. Two symmetrical ear plates are fixedly installed on the front side of the fixing plate. A threaded rod is installed between the two ear plates via a motor. Multiple equally spaced moving blocks are rotatably installed on the external thread of the threaded rod. A cutting unit is provided on the lower part of one side of the moving block. A tensioning unit is provided inside the cutting unit. A spraying unit is provided in the middle of the cutting unit. Multiple support units corresponding to the cutting unit are fixedly installed in the middle of the convex plate. A pointer is fixedly installed in the middle of the lower end face of the moving block. A scale fixedly connected to the fixing plate is provided behind the pointer.
[0010] Furthermore, two symmetrically arranged top frames are fixedly installed on the top of the fixed plate. A rotating rod is installed between the top frames on both sides via a motor. Multiple equally spaced rectangular bars are fixedly installed on the rotating rod. A collar that slides left and right is installed between the rectangular bars and the rotating rod. A U-shaped plate is fixedly installed on one side of the collar, and an outer sleeve is fixedly installed on one side of the moving block. A guide groove is opened on the lower front side of the fixed plate, and a guide plate that is fixedly connected to the outer sleeve is slidably installed in the guide groove.
[0011] Furthermore, through slots are provided on both sides of the outer sleeve, an inner plate is slidably installed inside the outer sleeve, a top slot is provided on the top of the inner plate, a shaft is fixedly installed in the top slot, the side of the U-shaped plate away from the collar passes through the through slot and is located outside the shaft, and a C-shaped plate is fixedly installed at the bottom of the inner plate.
[0012] Furthermore, the cutting unit includes movable grooves on both sides of the inner wall of the C-shaped plate. Lifting blocks are slidably installed inside the movable grooves via electric sliders. Upper side wheels are mounted between the lifting blocks on both sides via motors. T-shaped plates are fixedly installed on both sides of the lower end face of the C-shaped plate. Bi-directional push plates are fixedly installed on the lower end face of the T-shaped plates. Mounting brackets are fixedly installed at both ends of the bi-directional push plates. Side wheels are mounted between the two corresponding mounting brackets on the two bi-directional push plates via motors. Diamond wire for wire cutting the concrete slab is installed between the side wheels on both sides and the upper side wheel.
[0013] Furthermore, the tensioning unit includes a cam mounted on the middle of one side of a T-shaped plate via a motor, and rectangular tensioning grooves are provided on the middle of both sides of the T-shaped plate. Connecting blocks are slidably mounted in the tensioning grooves, and tensioning wheels are rotatably mounted between the connecting blocks on the left and right sides. Rotating plates are hinged to both sides of the cam, and the ends of the rotating plates away from the cam are respectively hinged to their corresponding connecting blocks.
[0014] Furthermore, the spraying unit includes a water tank, with two sides of the water tank fixedly connected to two bidirectional push plates on both sides. Multiple nozzles are arranged at equal intervals on the lower end face of the water tank. A compression box communicating with its inner cavity is fixedly installed in the middle of the upper end face of the water tank. A compression rod is slidably installed in the middle of the compression box. A rotating wheel is fixedly installed on one side of the upper wheel. A push plate is hinged to one side of the rotating wheel. A cylinder is fixedly installed on the side of the push plate away from the rotating wheel. A top plate is fixedly installed on the top of the compression rod. An arc-shaped groove is opened in the middle of the top plate, and the cylinder slides in the arc-shaped groove.
[0015] Furthermore, the support unit includes a cross groove in the middle of the convex plate, in which multiple cross plates are slidably installed at equal intervals. A trapezoidal groove is provided in the middle of the cross plate, in which a trapezoidal plate is slidably installed. The trapezoidal plate has a groove in the middle. Vertical grooves communicating with the trapezoidal groove are provided on both sides of the cross plate. Control blocks are slidably installed in the vertical grooves by electric sliders. The ends of the two control blocks that are close to each other are fixedly connected to the trapezoidal plate.
[0016] Furthermore, a telescopic plate is fixedly installed on one side of the cross plate, and a connecting plate is fixedly installed on the top of the telescopic plate. One end of the connecting plate is fixedly connected to its corresponding C-shaped plate.
[0017] Furthermore, the limiting unit includes an L-shaped plate fixedly connected to the convex plate, a spring rod fixedly installed on the inner side of the L-shaped plate, an abutment plate fixedly installed at one end of the spring rod, and the upper part of the abutment plate is sloped.
[0018] Another object of the present invention is to provide a method for operating a concrete slab sizing cutting device, comprising the following steps:
[0019] S1: Concrete slab fixing:
[0020] Place the concrete slab in the middle of the convex plate, then open the spring rods on both sides to bring the abutment plates on both sides closer together, thereby fixing the concrete convex plate before cutting. Then, the electric slider is opened to drive the control block to slide up in the vertical groove. When the control block slides up, the trapezoidal plate is placed into the trapezoidal groove at the bottom of the concrete slab.
[0021] S2: Concrete slab dimensional cutting:
[0022] When the motor is turned on, it drives the threaded rod to rotate. As the threaded rod rotates, it adjusts the distance between the collars on both sides. At this time, the pointer moves on the scale, making it easy to observe the distance between each cutting unit, so as to perform batch dimensional cutting of concrete slabs.
[0023] The beneficial effects of this invention are:
[0024] 1. This invention uses a motor to drive a rotating rod to rotate, which in turn drives a collar to rotate. At this time, the collar lifts or presses down the shaft through a U-shaped plate. When the shaft is pressed down, the inner plate slides down inside the outer sleeve. When the inner plate slides down, it moves the U-shaped plate down. When the U-shaped plate moves down, the entire cutting unit can be moved down, which facilitates the cutting operation on the concrete slab. By sliding the collar left and right on the rectangular strip, the collar and its corresponding cutting unit can move synchronously when the spacing between multiple cutting units is adjusted.
[0025] 2. When the motor of this invention is turned on, it drives the upper wheel and the side wheel to rotate. At this time, the diamond wire rotates to realize the wire cutting operation of the concrete slab. Through the setting of the bidirectional push plate, when the bidirectional push plate is opened and extended, the distance between the two mounting brackets is moved away from each other, and the distance between the two side wheels is increased. At the same time, the electric slider is opened to drive the lifting block to slide down in the moving groove. When the lifting block slides down, it drives the upper wheel to move down simultaneously. As the two side wheels move away from each other, the upper wheel moves down, which can meet the requirements of the diamond wire between the two side wheels to be suitable for cutting concrete slabs of different widths.
[0026] 3. When adjusting the tension of the diamond wire, the motor is turned on and drives the cam to rotate clockwise. When the cam rotates clockwise, it drives the connecting blocks on both sides to slide closer to each other in the tensioning groove through the rotating plates on both sides. At this time, the tensioning wheels on both sides move closer to each other, thereby pressing the two sides of the diamond wire and realizing the tensioning operation of the diamond wire. Conversely, the diamond wire is loosened. Compared with the existing device, the present invention can quickly and conveniently adjust the tension of the diamond wire when cutting concrete slabs by wire cutting, thereby improving the cutting quality of concrete slabs during wire cutting.
[0027] 4. When the upper wheel of this invention rotates to cut the concrete slab with diamond wire, the rotating wheel drives the push plate to swing. When the push plate swings, it slides through the cylinder in the arc groove, thereby compressing the compression rod in the compression box. When the compression rod presses down in the compression box, the nozzle below the water spray box sprays water on the diamond wire and the cut part of the concrete slab. The water spraying can reduce cracking of the concrete slab during cutting and clean the dust adhering to the diamond wire during cutting.
[0028] 5. This invention uses multiple cross plates corresponding to multiple cutting units. With the setting of telescopic plates and connecting plates, when the spacing between multiple cutting units is adjusted to meet multiple cutting requirements of concrete slabs, the cross plates can move synchronously with the corresponding cutting units. This allows the supporting units below the cutting units to provide stable support for the lower part of the concrete slab when the cutting units are cutting the concrete slab. When the electric slider is opened and the control block slides upward in the vertical groove, the trapezoidal plate moves out of the trapezoidal groove until it moves to the lower part of the concrete slab and contacts it. The lifting and lowering of the trapezoidal plate can meet the contact of concrete slabs of the same shape but different sizes. The groove in the middle of the trapezoidal plate can guide and limit the diamond wire when cutting the concrete slab, preventing the diamond wire from being misaligned during the cutting process. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the overall front structure of the present invention;
[0031] Figure 2 This is a partial structural schematic diagram of the present invention;
[0032] Figure 3 This is a schematic diagram of the structure between the cutting unit and the fixing plate of the present invention;
[0033] Figure 4 This is a side sectional view of the cutting unit structure of the present invention;
[0034] Figure 5 This is a partial cross-sectional view of the cutting unit of the present invention;
[0035] Figure 6 This is a schematic diagram of the structure between the convex plate and the concrete slab of the present invention;
[0036] Figure 7 This is a schematic diagram of the side section structure of the convex plate and the concrete slab of the present invention;
[0037] Figure 8 This is a schematic diagram of the external structure of the cross plate of the present invention.
[0038] The attached figures are labeled as follows:
[0039] 1. Convex plate; 101. L-shaped plate; 102. Spring rod; 103. Abutment plate; 11. Rear frame; 12. Fixing plate; 13. Ear plate; 14. Threaded rod; 15. Moving block; 151. Pointer; 16. Top frame; 161. Rotating rod; 162. Rectangular strip; 163. Collar; 164. U-shaped plate; 21. Outer sleeve; 211. Through groove; 22. Inner plate; 221. Top groove; 222. Shaft; 23. C-shaped plate; 231. Moving groove; 232. Lifting block; 3 1. T-shaped plate; 311. Cam; 312. Rotating plate; 313. Connecting block; 314. Tensioner wheel; 32. Two-way push plate; 33. Mounting bracket; 34. Side wheel; 35. Upper side wheel; 36. Diamond wire; 41. Water spray tank; 42. Compression tank; 43. Compression rod; 44. Rotating wheel; 45. Push plate; 46. Top plate; 51. Cross groove; 511. Telescopic plate; 512. Connecting plate; 52. Cross plate; 53. Trapezoidal groove; 54. Trapezoidal plate; 55. Vertical groove; 56. Control block. Detailed Implementation
[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0041] As attached Figures 1-8 As shown, a concrete slab sizing cutting device includes a convex plate 1, with limiting units on both sides of the convex plate 1. A concrete slab to be cut is placed on the upper surface of the convex plate 1. A rear frame 11 is fixedly installed on the rear side of the convex plate 1. A fixing plate 12 is fixedly installed on one side of the top of the rear frame 11. Two symmetrical ear plates 13 are fixedly installed on the front side of the fixing plate 12. A threaded rod 14 is rotatably installed between the two ear plates 13 via a motor. Multiple equally spaced moving blocks 15 are rotatably installed on the external threads of the threaded rod 14. A cutting unit is provided on the lower part of one side of the moving block 15. A tensioning unit is provided inside the cutting unit. A spraying unit is provided in the middle of the cutting unit. Multiple support units corresponding to the cutting unit are fixedly installed in the middle of the convex plate 1. A pointer 151 is fixedly installed in the middle of the lower end face of the moving block 15. A scale fixedly connected to the fixing plate 12 is provided on the rear side of the pointer 151.
[0042] The rotation of the threaded rod 14 drives the rotating blocks 15 on both sides to rotate, thereby adjusting the spacing between the cutting units at the bottom of the moving blocks 15. The arrangement of multiple cutting units allows for the cutting of concrete slabs into multiple equal parts during fixed-size division. Furthermore, as the moving blocks 15 move, the pointer 151 slides on a scale, allowing for direct observation of the required specifications of the concrete slab to be cut, thus meeting the need for cutting concrete slabs of various specifications. The spraying unit further enhances the cutting unit's ability to spray onto the concrete slab. When wire-cutting concrete slabs, water is sprayed onto the diamond wire 36. This spraying helps prevent cracking caused by localized high temperatures during concrete cutting, suppresses dust generated during the cutting process, and cleans and cools the diamond wire 36. The tensioning unit allows for appropriate adjustment of the diamond wire 36's tension during wire-cutting of the concrete slab. This reduces wire wear, extends wire lifespan, and improves cutting efficiency and quality.
[0043] As attached Figure 3 As shown, two symmetrically arranged top frames 16 are fixedly installed on the top of the fixed plate 12. A rotating rod 161 is installed between the top frames 16 on both sides via a motor. Multiple rectangular bars 162 with equal spacing are fixedly installed on the rotating rod 161. A collar 163 that slides left and right is installed between the rectangular bars 162 and the rotating rod 161. A U-shaped plate 164 is fixedly installed on one side of the collar 163. An outer sleeve 21 is fixedly installed on one side of the moving block 15. A guide groove is opened on the lower front side of the fixed plate 12. A guide plate that is fixedly connected to the outer sleeve 21 is slidably installed in the guide groove.
[0044] As attached Figures 3-4 As shown, through slots 211 are provided on both sides of the outer sleeve 21, and an inner plate 22 is slidably installed inside the outer sleeve 21. A top slot 221 is provided on the top of the inner plate 22, and a shaft 222 is fixedly installed inside the top slot 221. The side of the U-shaped plate 164 away from the collar 163 passes through the through slot 211 and is located outside the shaft 222. A U-shaped plate 23 is fixedly installed at the bottom of the inner plate 22.
[0045] The motor drives the rotating rod 161 to rotate, and the rotating rod 161 rotates synchronously with the collar 163. At this time, the collar 163 lifts or presses down the shaft 222 through the U-shaped plate 164. When the shaft 222 is pressed down, the inner plate 22 slides down inside the outer sleeve 21. When the inner plate 22 slides down, it moves the U-shaped plate 23 down. When the U-shaped plate 23 moves down, the entire cutting unit can be moved down, which facilitates the cutting operation on the concrete slab. By sliding the collar 163 left and right on the rectangular bar 162, the collar 163 and its corresponding cutting unit can move synchronously when the spacing between multiple cutting units is adjusted.
[0046] As attached Figure 4 As shown, the cutting unit includes movable grooves 231 on both sides of the inner wall of the C-shaped plate 23. Lifting blocks 232 are slidably installed inside the movable grooves 231 via electric sliders. Upper side wheels 35 are mounted between the lifting blocks 232 on both sides via motors. T-shaped plates 31 are fixedly installed on both sides of the lower end face of the C-shaped plate 23. Bidirectional push plates 32 are fixedly installed on the lower end face of the T-shaped plates 31. Mounting brackets 33 are fixedly installed at both ends of the bidirectional push plates 32. Side wheels 34 are mounted between the two corresponding mounting brackets 33 on the two bidirectional push plates 32 via motors. Diamond wire 36 for wire cutting of concrete slabs is installed between the side wheels 34 on both sides and the upper side wheels 35.
[0047] When performing wire cutting on a concrete slab, the motor is turned on, driving the upper wheel 35 and the side wheel 34 to rotate. At this time, the diamond wire 36 rotates, thereby realizing the wire cutting operation of the concrete slab. Through the setting of the bidirectional push plate 32, when the bidirectional push plate 32 is opened and extended, the distance between the two mounting brackets 33 is moved away from each other, and the distance between the two side wheels 34 is increased. At the same time, the electric slider is opened, driving the lifting block 232 to slide down in the moving groove 231. When the lifting block 232 slides down, it synchronously drives the upper wheel 35 to move down. As the two side wheels 34 move away from each other, the upper wheel 35 moves down, which can meet the requirements of the diamond wire 36 between the two side wheels 34 to be suitable for cutting concrete slabs of different widths.
[0048] As attached Figures 4-5 As shown, the tensioning unit includes a cam 311 mounted on the middle of one side of a T-shaped plate 31 via a motor. Rectangular tensioning grooves are provided on the middle of both sides of the T-shaped plate 31. Connecting blocks 313 are slidably mounted in the tensioning grooves. Tensioning wheels 314 are rotatably mounted between the connecting blocks 313 on the left and right sides. Rotating plates 312 are hinged to both sides of the cam 311. The ends of the rotating plates 312 away from the cam 311 are respectively hinged to their corresponding connecting blocks 313.
[0049] The tension of the diamond wire 36 plays a crucial role in the cutting of concrete slabs. If the diamond wire 36 is too loose, the cutting speed will decrease, and it will cause swaying during the cutting process. Conversely, if the diamond wire 36 is too tight, although the cutting speed can be increased, it is prone to increased wear. When adjusting the tension of the diamond wire 36, the motor is turned on, driving the cam 311 to rotate clockwise. When the cam 311 rotates clockwise, it drives the connecting blocks 313 on both sides to slide closer to each other in the tensioning groove through the rotating plates 312 on both sides. At this time, the tensioning wheels 314 on both sides move closer to each other, thereby pressing the two sides of the diamond wire 36, thus achieving the tightening operation of the diamond wire 36. Conversely, the diamond wire 36 is loosened. Compared with the existing device, the present invention can quickly and conveniently adjust the tension of the diamond wire 36 when cutting concrete slabs by wire cutting, thereby improving the cutting quality of concrete slabs during wire cutting.
[0050] As attached Figure 5 As shown, the spraying unit includes a water tank 41. The two sides of the water tank 41 are fixedly connected to the two bidirectional push plates 32 on both sides. Multiple nozzles are arranged at equal intervals on the lower end face of the water tank 41. A compression box 42 communicating with its inner cavity is fixedly installed in the middle of the upper end face of the water tank 41. A compression rod 43 is slidably installed in the middle of the compression box 42. A rotating wheel 44 is fixedly installed on one side of the upper wheel 35. A push plate 45 is hinged to one side of the rotating wheel 44. A cylinder is fixedly installed on the side of the push plate 45 away from the rotating wheel 44. A top plate 46 is fixedly installed on the top of the compression rod 43. An arc-shaped groove is opened in the middle of the top plate 46, and the cylinder slides in the arc-shaped groove.
[0051] When the upper wheel 35 rotates to cut the concrete slab with the diamond wire 36, the rotating wheel 44 rotates and drives the push plate 45 to swing. When the push plate 45 swings, it slides through the cylinder in the arc groove, thereby compressing the compression rod 43 in the compression box 42. When the compression rod 43 presses down in the compression box 42, the nozzle below the water spray box 41 sprays water on the diamond wire 36 and the cut part of the concrete slab. The water spraying can reduce cracking during the cutting of the concrete slab and clean the dust adhering to the diamond wire 36 during cutting.
[0052] As attached Figures 7-8 As shown, the support unit includes a cross groove 51 in the middle of the convex plate 1. Multiple cross plates 52 arranged at equal intervals are slidably installed in the cross groove 51. A trapezoidal groove 53 is provided in the middle of the cross plate 52. A trapezoidal plate 54 is slidably installed in the trapezoidal groove 53. The trapezoidal plate 54 is recessed in the middle. Vertical grooves 55 communicating with the trapezoidal groove 53 are provided on both sides of the cross plate 52. Control blocks 56 are slidably installed in the vertical grooves 55 by electric sliders. The ends of the two control blocks 56 that are close to each other are fixedly connected to the trapezoidal plate 54.
[0053] Multiple cross plates 52 correspond one-to-one with multiple cutting units. With the setting of telescopic plate 511 and connecting plate 512, when the spacing between multiple cutting units is adjusted, the cross plates 52 can move synchronously with the corresponding cutting units to meet the multiple cuts of the concrete slab. This allows the corresponding support unit below the cutting unit to provide stable support for the lower part of the concrete slab when the cutting unit is cutting the concrete slab. When the electric slider is opened and the control block 56 slides upward in the vertical groove 55, the trapezoidal plate 54 moves out of the trapezoidal groove 53 until the trapezoidal plate 54 moves to the lower part of the concrete slab and contacts it. The lifting and lowering of the trapezoidal plate 54 can meet the contact of concrete slabs of the same shape but different sizes. The groove in the middle of the trapezoidal plate 54 can guide and limit the diamond wire 36 when cutting the concrete slab, preventing the diamond wire 36 from being misaligned when cutting the concrete slab.
[0054] As attached Figures 1-3 As shown, a telescopic plate 511 is fixedly installed on one side of the cross plate 52, and a connecting plate 512 is fixedly installed on the top of the telescopic plate 511. One end of the connecting plate 512 is fixedly connected to its corresponding U-shaped plate 23.
[0055] As attached Figure 6 As shown, the limiting unit includes an L-shaped plate 101 fixedly connected to the convex plate 1. A spring rod 102 is fixedly installed on the inner side of the L-shaped plate 101. An abutment plate 103 is fixedly installed at one end of the spring rod 102. The upper part of the abutment plate 103 is sloped.
[0056] Another object of the present invention is to provide a method for operating a concrete slab sizing cutting device, comprising the following steps:
[0057] S1: Concrete slab fixing:
[0058] The concrete slab is placed in the middle of the convex plate 1. Then the spring rods 102 on both sides are opened to bring the abutment plates 103 on both sides closer to each other, thereby fixing the concrete convex plate before cutting. Then the electric slider is opened to drive the control block 56 to slide up in the vertical groove 55. When the control block 56 slides up, the trapezoidal plate 54 is placed in the trapezoidal groove 53 at the bottom of the concrete slab.
[0059] S2: Concrete slab dimensional cutting:
[0060] When the motor is turned on, it drives the threaded rod 14 to rotate. When the threaded rod 14 rotates, it drives the gap between the collars 163 on both sides to adjust. At this time, the pointer 151 moves on the scale, which makes it easy to observe the gap between each cutting unit so as to perform batch dimensional cutting of concrete slabs.
[0061] In use, the threaded rod 14 rotates, causing the moving blocks 15 on both sides to rotate. This allows adjustment of the spacing between the cutting units at the bottom of the moving blocks 15. The multiple cutting units enable the concrete slab to be cut into multiple equal parts during fixed-size cutting. As the moving blocks 15 move, the pointer 151 slides on a scale, allowing for direct observation of the required dimensions of the concrete slab. This satisfies the need for cutting concrete slabs of various sizes. The spraying unit allows the cutting unit to spray water onto the diamond wire 36 during wire cutting of the concrete slab. This water spraying prevents cracking caused by localized high temperatures during concrete cutting, suppresses dust generated during cutting, and cleans and cools the diamond wire 36. The tensioning unit further enhances the cutting efficiency. When the cutting unit performs wire cutting on the concrete slab, the tension of the diamond wire 36 can be appropriately adjusted to reduce wire wear and extend its service life. On the other hand, adjusting the tension of the diamond wire 36 can improve cutting efficiency and quality. The motor drives the rotating rod 161 to rotate, and the rotating rod 161 drives the collar 163 to rotate. At this time, the collar 163 lifts or presses down the shaft 222 through the U-shaped plate 164. When the shaft 222 is pressed down, the inner plate 22 slides down inside the outer sleeve 21. When the inner plate 22 slides down, the U-shaped plate 23 moves down. When the U-shaped plate 23 moves down, the entire cutting unit can be moved down, which facilitates the wire cutting operation on the concrete slab. By sliding the collar 163 left and right on the rectangular bar 162, the collar 163 and its corresponding cutting unit can move synchronously when the spacing between multiple cutting units is adjusted.
[0062] When performing wire cutting on a concrete slab, the motor starts, driving the upper wheel 35 and the side wheel 34 to rotate. At this time, the diamond wire 36 rotates, thus achieving the wire cutting operation on the concrete slab. Through the setting of the bidirectional push plate 32, when the bidirectional push plate 32 is extended, the distance between the two mounting brackets 33 increases, and the distance between the two side wheels 34 increases. Simultaneously, the electric slider opens, driving the lifting block 232 to slide down within the moving groove 231. As the lifting block 232 slides down, it synchronously drives the upper wheel 35 to move downwards. The downward movement of the upper wheel 35 as the two side wheels 34 move away from each other satisfies the requirement for the diamond wire 36 to be suitable for cutting concrete slabs of different widths. The tension of the diamond wire 36 plays a crucial role in the concrete slab cutting process. If the diamond wire 36 is too tight... If the wire is too loose, the cutting speed will decrease, and it will cause swaying during the cutting process. Conversely, if the diamond wire 36 is too tight, although the wire speed can be increased, it will easily increase wear. When the tightness of the diamond wire 36 is adjusted, the motor is turned on and drives the cam 311 to rotate clockwise. When the cam 311 rotates clockwise, it drives the connecting blocks 313 on both sides to slide closer to each other in the tensioning groove through the rotating plates 312 on both sides. At this time, the tensioning wheels 314 on both sides move closer to each other, thereby pressing the two sides of the diamond wire 36, thus realizing the tightening operation of the diamond wire 36. Conversely, the diamond wire 36 is loosened. Compared with the existing device, the present invention can quickly and conveniently adjust the tightness of the diamond wire 36 when cutting concrete slabs by wire cutting, thereby improving the cutting quality of concrete slabs during wire cutting.
[0063] When the upper wheel 35 rotates, causing the diamond wire 36 to cut the concrete slab, the rotating wheel 44 rotates simultaneously, driving the push plate 45 to swing. As the push plate 45 swings, it slides through the arc-shaped groove via a cylinder, causing the compression rod 43 to compress within the compression box 42. When the compression rod 43 presses down within the compression box 42, the nozzles below the water spray box 41 spray water onto the diamond wire 36 and the cut area of the concrete slab. This water spraying reduces cracking during concrete slab cutting and cleans the dust adhering to the diamond wire 36 during cutting. Multiple cross plates 52 correspond one-to-one with multiple cutting units, and with the telescopic plate 511 and connecting plate 512, the spacing between multiple cutting units can be adjusted to meet the requirements of concrete cutting. When the concrete slab is cut into multiple sections, the cross plate 52 can move synchronously with the corresponding cutting unit so that when the cutting unit cuts the concrete slab, the corresponding support unit below it can provide stable support for the lower part of the concrete slab. When the electric slider is opened and the control block 56 slides upward in the vertical groove 55, the trapezoidal plate 54 moves out of the trapezoidal groove 53 until the trapezoidal plate 54 moves to the lower part of the concrete slab and contacts it. The lifting and lowering of the trapezoidal plate 54 can meet the contact of concrete slabs of the same shape but different sizes. The groove in the middle of the trapezoidal plate 54 can guide and limit the diamond wire 36 when cutting the concrete slab, so as to avoid the diamond wire 36 from being misaligned when cutting the concrete slab.
[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A concrete slab sizing cutting device, comprising a convex plate (1), characterized in that, The convex plate (1) is provided with limiting units on the left and right sides. A concrete slab to be cut is placed on the upper surface of the convex plate (1). A rear frame (11) is fixedly installed on the rear side of the convex plate (1). A fixing plate (12) is fixedly installed on one side of the top of the rear frame (11). Two symmetrical ear plates (13) are fixedly installed on the front side of the fixing plate (12). A threaded rod (14) is installed between the two ear plates (13) by a motor. Multiple equally spaced moving blocks (15) are installed on the external thread of the threaded rod (14). A cutting unit is provided on the lower part of one side of the moving block (15). A tensioning unit is provided inside the cutting unit. A spraying unit is provided in the middle of the cutting unit. Multiple support units corresponding to the cutting unit are fixedly installed in the middle of the convex plate (1). A pointer (151) is fixedly installed in the middle of the lower surface of the moving block (15). A scale ruler is fixedly connected to the fixing plate (12) on the rear side of the pointer (151). The top of the fixed plate (12) is fixedly installed with two symmetrically arranged top frames (16). A rotating rod (161) is installed between the top frames (16) on both sides via a motor. Multiple rectangular strips (162) are fixedly installed on the rotating rod (161) at equal intervals. A collar (163) that slides left and right is installed between the rectangular strips (162) and the rotating rod (161). A U-shaped plate (164) is fixedly installed on one side of the collar (163). An outer sleeve (21) is fixedly installed on one side of the moving block (15). A guide groove is opened at the lower front side of the fixed plate (12). A guide plate that is fixedly connected to the outer sleeve (21) is slidably installed in the guide groove. The outer sleeve (21) has through slots (211) on both sides. An inner plate (22) is slidably installed inside the outer sleeve (21). A top slot (221) is opened on the top of the inner plate (22). A shaft (222) is fixedly installed inside the top slot (221). The side of the U-shaped plate (164) away from the collar (163) passes through the through slot (211) and is located outside the shaft (222). A U-shaped plate (23) is fixedly installed at the bottom of the inner plate (22). The cutting unit includes movable grooves (231) on both sides of the inner wall of the C-shaped plate (23). Lifting blocks (232) are slidably installed inside the movable grooves (231) via electric sliders. Upper side wheels (35) are installed between the lifting blocks (232) on both sides via motor rotation. T-shaped plates (31) are fixedly installed on both sides of the lower end face of the C-shaped plate (23). Bi-directional push plates (32) are fixedly installed on the lower end face of the T-shaped plates (31). Mounting brackets (33) are fixedly installed at both ends of the bi-directional push plates (32). Side wheels (34) are installed between the two corresponding mounting brackets (33) on the two bi-directional push plates (32) via motor rotation. Diamond wire (36) for wire cutting of concrete slabs is installed between the side wheels (34) on both sides and the upper side wheels (35). The tensioning unit includes a cam (311) mounted on the middle of one side of a T-shaped plate (31) via a motor. Rectangular tensioning grooves are provided on the middle of both sides of the T-shaped plate (31). Connecting blocks (313) are slidably mounted in the tensioning grooves. Tensioning wheels (314) are rotatably mounted between the connecting blocks (313) on the left and right sides. Rotating plates (312) are hinged on both sides of the cam (311). The ends of the rotating plates (312) on both sides away from the cam (311) are respectively hinged to their corresponding connecting blocks (313). The support unit includes a cross groove (51) in the middle of a convex plate (1), a plurality of cross plates (52) arranged at equal intervals are slidably installed in the cross groove (51), a trapezoidal groove (53) is opened in the middle of the cross plate (52), a trapezoidal plate (54) is slidably installed in the trapezoidal groove (53), the middle of the trapezoidal plate (54) is grooved, and vertical grooves (55) communicating with the trapezoidal groove (53) are opened on both sides of the cross plate (52). A control block (56) is slidably installed in the vertical groove (55) by an electric slider, and the two control blocks (56) are fixedly connected to the trapezoidal plate (54) at the close end. A telescopic plate (511) is fixedly installed on one side of the cross plate (52), and a connecting plate (512) is fixedly installed on the top of the telescopic plate (511). One end of the connecting plate (512) is fixedly connected to its corresponding U-shaped plate (23).
2. The concrete slab sizing cutting device according to claim 1, characterized in that, The spraying unit includes a water tank (41), which is fixedly connected to two bidirectional push plates (32) on both sides. Multiple nozzles are arranged at equal intervals on the lower end face of the water tank (41). A compression box (42) communicating with its inner cavity is fixedly installed in the middle of the upper end face of the water tank (41). A compression rod (43) is slidably installed in the middle of the compression box (42). A rotating wheel (44) is fixedly installed on one side of the upper wheel (35). A push plate (45) is hinged on one side of the rotating wheel (44). A cylinder is fixedly installed on the side of the push plate (45) away from the rotating wheel (44). A top plate (46) is fixedly installed on the top of the compression rod (43). An arc groove is opened in the middle of the top plate (46), and the cylinder slides in the arc groove.
3. The concrete slab sizing cutting device according to claim 1, characterized in that, The limiting unit includes an L-shaped plate (101) fixedly connected to the convex plate (1). A spring rod (102) is fixedly installed on the inner side of the L-shaped plate (101). An abutment plate (103) is fixedly installed at one end of the spring rod (102). The upper part of the abutment plate (103) is sloped.
4. A method for operating a concrete slab sizing cutting device, applied to the concrete slab sizing cutting device described in claim 1, characterized in that, Includes the following steps: S1: Concrete slab fixing: The concrete slab is placed in the middle of the convex plate (1), and then the spring rods (102) on both sides are opened to bring the abutment plates (103) on both sides closer to each other, thereby fixing the concrete convex plate before cutting. Then the electric slider is opened to drive the control block (56) to slide up in the vertical groove (55). When the control block (56) slides up, the trapezoidal plate (54) is placed in the trapezoidal groove (53) at the bottom of the concrete slab. S2: Concrete slab dimensional cutting: When the motor is turned on, it drives the threaded rod (14) to rotate. When the threaded rod (14) rotates, it drives the gap between the collars (163) on both sides to be adjusted. At this time, the pointer (151) moves on the scale, which makes it easy to observe the gap between each cutting unit so as to carry out batch dimensional cutting of concrete slabs.