Concrete block cutting device
The cutting device, which uses a safety guard to drive the rotating shaft and transmission components to adjust the splash guard, solves the problems of saw blade wear and dust hazards, and achieves simultaneous optimization of mud obstruction and cutting accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINYI DADE CONCRETE CO LTD
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-10
AI Technical Summary
In existing concrete block cutting devices, the saw blade temperature rises during the cutting process, leading to increased wear; dust poses a health hazard; the splash guard obstructs the auxiliary lines, affecting cutting accuracy; and changes in the machine body position cause deviations in the cutting trajectory.
A concrete block cutting device was designed. The safety guard drives the rotating shaft and transmission components to make the splash baffle tilt and swing. With the support frame and spring structure, the mud is blocked without obscuring the cutting mark line. The baffle is shaken by the extrusion block and the protrusion structure to make the mud slide off.
It achieves automatic adjustment of the splash guard during the cutting process, which prevents mud from splashing and does not obstruct the marking line, reduces saw blade wear, and improves operational safety and cutting accuracy.
Smart Images
Figure CN121821602A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete block processing equipment technology, specifically a concrete block cutting device. Background Technology
[0002] In construction scenarios, with the diversification and refinement of architectural designs, it is often necessary to cut masonry blocks into specific sizes and shapes to meet the complex wall structures and styling requirements. Concrete block cutting devices are equipment specifically designed for processing concrete blocks. They use motors to drive saw blades, cutting tools, and other cutting components, combined with positioning mechanisms, clamping mechanisms, and dust removal and noise reduction components, to cut concrete blocks into specific sizes as needed.
[0003] When a saw blade rotates at high speed to cut concrete, two main problems arise. First, the saw blade's temperature rises sharply due to intense friction, which accelerates wear and reduces its sharpness. Second, a large amount of dry dust is generated during the cutting process, which can harm the respiratory system if inhaled by the operator. Therefore, current cutting machines are equipped with water spraying devices to cool down the high-speed rotating saw blade and reduce dust. When dust mixes with water, it turns into mud. During cutting, the mud will splash in the direction of the saw blade's rotation. Therefore, current cutting machines are equipped with splash guards to block the mud that splashes in the direction of the saw blade's rotation, and to prevent the sand and gravel particles contained in the mud from scratching the operator's hands and face, or splashing into their eyes. Before cutting concrete, the cutting machine draws auxiliary lines on the concrete to be cut. Then the operator holds the machine body and cuts along the auxiliary lines. Because the hand will unconsciously lift or press down the machine body, if the machine body is too close to the concrete, the splash guard will cover the auxiliary lines, and the operator will not be able to clearly see the preset auxiliary lines, resulting in a loss of reference when cutting and the problem of the cutting trajectory deviating from the auxiliary lines. On the other hand, if the machine body is too far away from the concrete, it will affect the splash guard from blocking the splashing mud. Summary of the Invention
[0004] The purpose of this invention is to provide a concrete block cutting device to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides a concrete block cutting device, including a machine body, a cutting blade mounted on the machine body, a safety guard covering the cutting blade, and further comprising... The splash guard has an adapter connected to one side, which is hinged to one side of the safety guard. A rotating shaft is connected to one side of the safety guard. The rotating shaft coincides with the axis of the cutting blade, and there is a gap between the rotating shaft and the cutting blade in the axial direction. A transmission component is connected between the rotating shaft and the adapter. When the machine body and the rotating shaft swing together, the transmission component pulls the adapter to rotate. The rotation of the adapter causes the splash guard to swing in the opposite direction of the machine body's tilt.
[0006] Furthermore, the adapter also includes, The rotating wheel is rotatably connected to the safety guard via a shaft, and the transmission component is wound around the outer wall of the rotating wheel. The shaft is coaxial with the rotating wheel. The safety shield has an embedded groove, and an adapter is rotatably connected to the inner wall of the embedded groove. One end of the adapter is connected to a connecting rod corresponding to the rotating wheel. The end of the shaft away from the rotating wheel extends into the embedded groove, and a first gear is installed on both the shaft and the connecting rod. The two first gears mesh and are connected. The outer wall of the splash guard is fixedly connected to the outer wall of the adapter.
[0007] Furthermore, an annular groove is provided on one side wall of the connecting rod corresponding to the embedding groove, and multiple protrusions are fixedly installed on the inner peripheral wall of the annular groove. The multiple protrusions are arranged at equal intervals along the circumference of the annular groove. The end of the connecting rod away from the adapter extends into the interior of the annular groove and is connected to an extrusion block. The extrusion block is located on the outer wall of the connecting rod, and the end of the extrusion block away from the connecting rod extends between two adjacent protrusions and is close to the inner circumferential wall of the annular groove.
[0008] Furthermore, a connecting shaft is rotatably connected to the end of the rotating shaft away from the cutting blade, and an arc-shaped slider is slidably connected to the outer wall of the connecting shaft. The arc of the slider is less than half a circumference of the connecting shaft, and the side wall of the arc-shaped slider is connected to the rotating shaft. The transmission component includes a transmission rope wound around the rotating wheel, with its two ends connected to the two ends of the arc-shaped slider.
[0009] Furthermore, a support frame is provided on one side of the cutting blade, and a through groove is provided on the connecting shaft. One end of the support frame passes through the through groove and is slidably connected to the through groove.
[0010] Furthermore, the support frame has a through-hole with a spring inside. A block is fixedly installed on the inner wall of the slot. One end of the spring is connected to the inner bottom wall of the through-hole, and the other end is fixedly connected to the outer wall of the block. The support frame can slide along both sides of the block when inserted into the slot area.
[0011] Furthermore, a second gear is provided on one side of the arc-shaped slider, and multiple teeth are fixedly installed at equal intervals on the outer peripheral wall of the arc-shaped slider, which mesh with the second gear. A turntable is fixedly installed at the end of the connecting shaft away from the rotating shaft. A mounting rod is rotatably connected to one end of the turntable. The end of the mounting rod away from the turntable is fixedly connected to one end of the second gear. The inner wall of the strip-shaped opening is provided with a strip-shaped groove, and a slide plate is slidably connected in the strip-shaped groove. One side of the slide plate extends into the strip-shaped opening and is fixedly connected to a rack. A third gear that meshes with the rack is fixedly installed on the outer wall of the mounting rod. The inner bottom wall of the strip-shaped opening is provided with a movable plate. The end of the rack away from the third gear is fixedly connected to the movable plate, and the end of the spring away from the block is fixedly connected to the outer wall of the movable plate. The movable plate can slide along the inside of the strip-shaped opening.
[0012] Furthermore, a strip-shaped outer shell is fixedly installed on the outer wall of the safety cover. The end of the strip-shaped outer shell away from the safety cover extends to the rotating shaft. The connecting shaft and the mounting rod pass through the strip-shaped outer shell, and the strip-shaped outer shell covers the rotating shaft, the rotating wheel and the transmission rope.
[0013] Furthermore, the splash guard arches towards the machine body, forming a curved state with an inner arc surface corresponding to the cutting blade, and the end of the splash guard away from the adapter is set as an arc surface.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the machine body drives the safety guard to swing around the cutting blade, the up-and-down tilt of the safety guard will drive the rotating shaft to rotate, causing the transmission component to generate a pulling force on the adapter component, pulling the adapter component to drive the splash guard to swing in the opposite direction of the safety guard's tilt. When the machine body is away from the concrete, the splash guard tilts towards the concrete to ensure the mud blocking effect. When the machine body is close to the concrete, the splash guard tilts towards the machine body, which can both prevent mud from splashing onto the operator and not block the cutting marking line.
[0015] 2. In this invention, when the connecting rod rotates in the annular groove, the extrusion block hits the protrusion, causing the connecting rod to vibrate. This vibration is transmitted to the adapter and the splash guard, causing the guard to vibrate synchronously when it swings, which helps the mud adhering to its outer wall to slide off. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the appearance of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the connection structure between the cutting blade and the safety cover in this invention; Figure 4 This is a schematic diagram of the connection structure between the splash guard and the adapter in this invention; Figure 5 This is a schematic diagram of the connection structure between the rotating wheel and the transmission rope in this invention; Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle; Figure 7 for Figure 5Enlarged view of the structure at point B; Figure 8 This is a schematic diagram of the connection structure between the support frame and the strip opening in this invention; Figure 9 This is a schematic diagram of the connection structure between the connecting shaft and the through slot in this invention; Figure 10 This is a schematic diagram of the connection structure between the safety cover and the embedded groove in this invention; Figure 11 This is a schematic diagram of the connection structure between the embedded groove and the first gear in this invention.
[0017] In the diagram: 1. Cutting disc; 2. Safety guard; 3. Splash guard; 4. Support frame; 5. Support rod; 6. Strip-shaped shell; 7. Rotating shaft; 8. Rotating wheel; 9. Transmission rope; 10. Adapter; 11. Connecting shaft; 12. Turntable; 13. Arc-shaped slider; 14. Tooth; 15. Embedded groove; 16. Shaft; 17. Connecting rod; 18. First gear; 19. Annular groove; 20. Protrusion; 21. Extrusion block; 22. Second gear; 23. Mounting rod; 24. Strip-shaped opening; 25. Third gear; 26. Block; 27. Rack; 28. Strip-shaped slide; 29. Slide plate; 30. Spring; 31. Moving plate; 32. Through groove. Detailed Implementation
[0018] 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.
[0019] This invention provides a technical solution: See Figures 1-11 As shown, a concrete block cutting device includes a machine body, a cutting blade 1 mounted on the machine body, a safety guard 2 covering the cutting blade 1, and further includes... The splash guard 3 has an adapter connected to one side, which is hinged to one side of the safety cover 2. The safety cover 2 has a rotating shaft 7 connected to one side. The rotating shaft 7 is aligned with the axis of the cutting blade 1, and there is a gap between the rotating shaft 7 and the cutting blade 1 in the axial direction. A transmission component is connected between the rotating shaft 7 and the adapter. When the machine body swings together with the rotating shaft 7, the transmission component pulls the adapter to rotate. The rotation of the adapter causes the splash guard 3 to swing in the opposite direction of the machine body's tilt.
[0020] Please pay close attention. Figure 1The concrete block cutting device mainly consists of a cutting blade 1, a safety guard 2, a machine body, a handle, a handrail, a cooling system, and a splash guard 3. The cutting blade 1 is a circular metal base, mostly made of manganese steel, and the blade head has continuous teeth and segmented teeth. The safety guard 2 partially surrounds the top of the cutting blade 1, and is mostly made of steel plate or aluminum alloy. Its side is integrated with a water spray nozzle, which is used to spray water on the surface of the saw blade to cool it down when the cutting blade 1 is cutting concrete. The machine body is located on one side of the cutting blade 1. The drive shaft inside the machine body extends from the inside of the machine body toward the saw blade to form the main shaft. The end of the main shaft is machined with a shaft diameter that matches the center hole of the cutting blade 1. The end of the main shaft is connected to the cutting blade 1 through a flange. The flange is a circular metal disc. The center hole of the cutting blade 1 is interference-fitted with the main shaft. 4-8 bolt holes are evenly distributed on the outer circumference. The cutting blade 1 is pressed between the flange and the end face of the main shaft by high-strength bolts. The handle and armrest are respectively installed at the tail end of the machine body and on the side of the machine body near the cutting blade 1. When using the cutting device, hold the handle and armrest with both hands to operate. The safety guard 2 is fixedly connected to the machine body. The machine body and the safety guard 2 can be manually rotated within a range of 180° around the central axis of the cutting blade 1, i.e., the main shaft. The splash guard 3 is hinged to the outer wall of the safety cover 2 and close to the machine body. When operating the cutting device, the human body is behind the machine body, the cutting blade 1 is in front of the machine body, and the splash guard 3 is between the human body and the cutting blade 1. When the cutting blade 1 cuts the concrete, the mud mixed with water and concrete debris splashes towards the human body and is then blocked by the splash guard 3. The mud splashes onto the splash guard 3. Because the arm will involuntarily raise or lower the cutting device itself during cutting, and the cutting device has a certain weight, the arm needs to continuously maintain the stability of the machine body during operation. As the operation time increases, the biceps, triceps, and forearm flexor muscles of the arm will gradually become fatigued, leading to a decrease in muscle strength. If the flexor muscles fatigue faster, the machine body will naturally sag due to gravity; if the extensor muscles fatigue faster, the arm is likely to lose support and lift up. Therefore, the upward position of the machine body will change around the cutting blade. Please see Figure 2 and Figure 3 , Figure 2 This refers to the state when the fuselage is descending and almost touching the concrete surface. Figure 3 This refers to the state when the machine body is raised and away from the concrete surface. In both states, the safety shield 2 will move along the circumference of the cutting blade 1, and the splash guard 3 will change its angle as the safety shield 2 moves. Regarding the position of the concrete block below cutting disc 1, let's first look at... Figure 2The splash guard 3 is connected to the safety shield 2 on one side as a fixed end and the other side as a free end. When the machine body and the safety shield 2 tilt to the lower left, the splash guard 3 connected to the safety shield 2 will be closer to the ground. At this time, the free end of the splash guard 3 will tilt upwards in the opposite direction as the machine body tilts downwards, so that the free end of the splash guard 3 will not stick to the concrete and cause the auxiliary line to be completely blocked. Although the human hand holding the device will swing, it is possible to notice whether the device is being pressed against the concrete. Therefore, the device and splash guard 3 will not be pressed against the concrete. It is just that the up-and-down swing is difficult to control and notice. Then look Figure 3 When the machine body and safety shield 2 are tilted to the upper right, the splash guard 3 moves upward away from the concrete below. At this time, the free end of the splash guard 3 will swing downward in the same direction to ensure the effect of blocking the mud. If the splash guard 3 maintains its original angle and tilts upward, the space behind the cutting blade 1 will be exposed, and the mud will splash onto the operator. A support rod 5 connects the safety cover 2 and the rotating shaft 7. The rotating shaft 7 is fixed to the safety cover 2 via the support rod 5. Please refer to... Figure 4 As you can see, one end of the support rod 5 is fixedly connected to the inner wall of the safety cover 2, and the other end is fixedly connected to the outer wall of the rotating shaft 7. The rotating shaft 7 is disc-shaped, and the central axis of the rotating shaft 7 is the same as and overlaps with the central axis of the cutting blade 1. Therefore, when the safety cover 2 and the machine body swing slightly around the outer circumference of the cutting blade 1 with the central axis of the cutting blade 1 as the center, the corresponding support rod 5 will also swing and drive the rotating shaft 7 to rotate. The area where the rotating shaft 7 is connected to the support rod 5 will swing with the amplitude of the swing of the support rod 5. The splash guard 3 is fixed to the safety cover 2 by an adapter. The adapter and the rotating shaft 7 are connected by a transmission component. Whether the safety cover 2 is tilted up or down, the rotating shaft 7 will rotate. When the rotating shaft 7 rotates, the transmission component will be wound around the rotating shaft 7. After part of the transmission component is wound around the rotating shaft 7, the end of the transmission component connected to the adapter will generate a pulling force, which will pull the adapter to drive the transmission. After the adapter rotates, it will cause the splash guard 3 to swing in the opposite direction of the tilt of the safety cover 2. Therefore, the effect achieved is that when the machine body is too far away from the concrete, the splash guard 3 tilts towards the concrete to ensure the shielding effect, while when the machine body is close to the concrete, the splash guard 3 tilts towards the machine body, which can both prevent all the concrete from splashing onto the machine body and not cover the cutting marking line.
[0021] See Figures 4-11 The adapter also includes, The rotating wheel 8 is rotatably connected to the safety cover 2 via the shaft 16, and the transmission component is wound around the outer wall of the rotating wheel 8. The shaft 16 is coaxially arranged with the rotating wheel 8. The safety cover 2 has an embedded groove 15. An adapter 10 is rotatably connected to the inner wall of the embedded groove 15. A connecting rod 17 is connected to one end of the adapter 10 corresponding to the rotating wheel 8. The end of the shaft 16 away from the rotating wheel 8 extends into the embedded groove 15 and is equipped with a first gear 18 on both the shaft and the connecting rod 17. The two first gears 18 are meshed and connected. The outer wall of the splash guard 3 is fixedly connected to the outer wall of the adapter 10.
[0022] Please pay close attention. Figure 10 As mentioned earlier, after the rotating shaft 7 rotates, the transmission component will pull the adapter. The transmission component wraps around the outer wall of the rotating wheel 8 several times. One end of the transmission component is above the rotating wheel 8 and then extends to the position of the rotating shaft 7. The other end of the transmission component is below the rotating wheel 8 and also extends to the position of the rotating shaft 7. In this way, whether the rotating shaft 7 rotates clockwise or counterclockwise, it can pull the transmission component, and then the transmission component will pull the rotating wheel 8 to rotate. The rotating wheel 8 is rotatably connected to the safety cover 2 via the shaft 16. One end of the shaft 16 extends into the embedded groove 15. The connecting rod 17 is staggered with the shaft 16. Two first gears 18 are fixed on the outer walls of the shaft 16 and the connecting rod 17 respectively. The two first gears 18 are meshed with each other. The end of the rotating wheel 8 that is close to the outer wall of the safety cover 2 is fixedly connected to one end of the shaft 16. Therefore, after the rotating wheel 8 rotates, the shaft 16 will also rotate synchronously. The shaft 16 drives the first gear 18 fixed on its own outer wall to rotate. Then the rotating first gear 18 drives the first gear 18 fixed on the outer wall of the connecting rod 17 to rotate in the opposite direction. The first gear 18, which rotates in the opposite direction, drives the connecting rod 17 to rotate. The connecting rod 17 then drives the annular groove 19 to rotate. One end of the connecting rod 17 is fixedly connected to one end of the adapter 10. The other end of the adapter 10 is rotatably connected to the inner wall of the embedded groove 15. After the adapter 10 rotates, it can drive the splash guard 3 to swing.
[0023] See Figures 4-11 An annular groove 19 is provided on one side wall of the embedded groove 15 corresponding to the connecting rod 17. Multiple protrusions 20 are fixedly installed on the inner circumferential wall of the annular groove 19. The multiple protrusions 20 are arranged at equal intervals along the circumference of the annular groove 19. One end of the connecting rod 17 away from the adapter 10 extends into the interior of the annular groove 19 and is connected to a pressing block 21. The pressing block 21 is located on the outer wall of the connecting rod 17. The end of the pressing block 21 away from the connecting rod 17 extends between two adjacent protrusions 20 and is close to the inner peripheral wall of the annular groove 19. The end of the connecting rod 17 extending into the annular groove 19 is rotatably connected to the inner wall of the annular groove 19.
[0024] Please combine Figure 3 and Figure 4 As the fuselage, safety shield 2, and support rod 5 tilt upwards, the rotating shaft 7 follows... Figure 3The perspective is to rotate clockwise and then look... Figure 4 The clockwise rotating shaft 7 pulls the upper part of the transmission component, and then the transmission component pulls the rotating wheel 8 to rotate clockwise. The clockwise rotation is converted into the counterclockwise rotation of the adapter 10 through the two first gears 18, so that the swing direction of the splash guard 3 is different from the tilt direction of the fuselage. The end of the connecting rod 17 away from the adapter 10 extends into the annular groove 19 and is rotatably connected to the inner wall of the annular groove 19. The connecting rod 17 overlaps with the central axis of the annular groove 19. When the connecting rod 17 rotates, the extrusion block 21 will hit the protrusion 20. The impact causes the connecting rod 17 to vibrate. The vibration is transmitted to the adapter 10 and the splash guard 3, causing the splash guard 3 to vibrate itself when it swings, thereby helping the mud adhering to its outer wall to slide off.
[0025] See Figures 5-9 The end of the rotating shaft 7 away from the cutting blade 1 is rotatably connected to the connecting shaft 11. The outer wall of the connecting shaft 11 is slidably connected to the arc-shaped slider 13, the arc of which is less than half a circumference of the connecting shaft 11. The side wall of the arc-shaped slider 13 is connected to the rotating shaft 7. The transmission component includes a transmission rope 9, which is wound around the rotating wheel 8, and its two ends are respectively connected to the two ends of the arc-shaped slider 13.
[0026] Please pay close attention. Figure 7 The arc-shaped slider 13 is fixed on the end of the rotating shaft 7 facing away from the cutting blade 1. The arc-shaped slider 13 is located on the side of the connecting shaft 11 facing away from the rotating wheel 8. The two ends of the transmission rope 9 are fixedly connected to the top and bottom ends of the arc-shaped slider 13, respectively. The central axis of the connecting shaft 11 overlaps with that of the rotating shaft 7. When the rotating shaft 7 rotates, it will drive the arc-shaped slider 13 to rotate along the outer wall of the connecting shaft 11 with the central axis of the cutting blade 1. The circumferential position of the arc-shaped slider 13 changes. According to the different directions of the rotating shaft 7, the two ends of the arc-shaped slider 13 will alternately pull the transmission rope 9, so that part of the transmission rope 9 is attached to the outer wall of the connecting shaft 11.
[0027] See Figure 9 A support frame 4 is provided on one side of the cutting blade 1, and a through groove 32 is provided on the connecting shaft 11. One end of the support frame 4 is inserted into the through groove 32 and is slidably connected to the through groove 32.
[0028] The bottom of the support frame 4 is used to attach to the concrete surface. When the cutting blade 1 is inserted into the concrete to cut, the support frame 4 can rest against the concrete to prevent the cutting blade 1 from inserting too deeply into the concrete. At the same time, it also prevents the machine body from getting too close to the concrete and causing them to come into contact. The extended end of the top of the support frame 4 is inserted into the through groove 32 to achieve connection with the connecting shaft 11.
[0029] See Figure 9The support frame 4 has a through-hole 24, and a spring 30 is installed inside the through-hole 24. A block 26 is fixedly installed on the inner wall of the through-groove 32. One end of the spring 30 is connected to the inner bottom wall of the through-hole 24, and the other end is fixedly connected to the outer wall of the block 26. The area where the support frame 4 is inserted into the through-groove 32 can slide along both sides of the block 26.
[0030] Please see Figure 8 A block 26 is fixedly installed inside the groove 32. The strip opening 24 can slide along both sides of the block 26 to adjust the distance between the support frame 4 and the concrete. The block 26 and the strip opening 24 are connected by a spring 30, so that the sliding of the support frame 4 has resistance. A sliding rod is also fixedly installed inside the strip opening 24. The block 26 is slidably connected to the sliding rod. The sliding rod is located inside the spring 30 and supports the spring 30 to prevent it from deforming or tilting laterally. In this way, when the hand-held machine body is cutting concrete, if the downward resistance is too great, it means that the cutting blade 1 has been inserted too deeply into the concrete. It can be lifted in time to prevent the machine body from moving along the concrete. The support frame 4 also has the function of guiding and supporting. By supporting the concrete with the support frame 4, the overall equipment is easier to operate.
[0031] See Figures 5-11 A second gear 22 is provided on one side of the arc-shaped slider 13, and multiple teeth 14 are fixedly installed at equal intervals on the outer peripheral wall of the arc-shaped slider 13. The teeth 14 mesh with the second gear 22. A turntable 12 is fixedly installed at the end of the connecting shaft 11 away from the rotating shaft 7. A mounting rod 23 is rotatably connected to one end of the turntable 12. The end of the mounting rod 23 away from the turntable 12 is fixedly connected to the end of the second gear 22. The inner wall of the strip opening 24 is provided with a strip groove 28, and a slide plate 29 is slidably connected in the strip groove 28. One side of the slide plate 29 extends into the strip opening 24 and is fixedly connected to a rack 27. A third gear 25 that meshes with the rack 27 is fixedly installed on the outer wall of the mounting rod 23. The inner bottom wall of the strip opening 24 is provided with a movable plate 31. The end of the rack 27 away from the third gear 25 is fixedly connected to the movable plate 31. The end of the spring 30 away from the block 26 is fixedly connected to the outer wall of the movable plate 31. The movable plate 31 can slide along the inside of the strip opening 24.
[0032] Please see Figure 6 and Figures 2-3When the arc-shaped slider 13 rotates, it drives the second gear 22 to rotate through the teeth 14. When the second gear 22 rotates, it drives the mounting rod 23 and the third gear 25 to rotate. After the third gear 25 rotates, it drives the rack 27 to slide along the strip opening 24. The rack 27 is slidably connected to the strip groove 28 through the slide plate 29. When the rack 27 slides, the slide plate 29 slides along the strip groove 28. When the rack 27 slides, it will pull the moving plate 31 to move. When the machine body is tilted, the arc-shaped slider 13 rotates clockwise around the connecting shaft 11, causing the second gear 22 to rotate counterclockwise. Then the mounting rod 23 and the third gear 25 also rotate counterclockwise. At this time, the rack 27 will slide towards the moving plate 31, causing the moving plate 31 to slide towards the bottom of the strip opening 24. At this time, the spring 30 is in a relaxed state. When the machine body tilts down, it means that the machine body is closer to the concrete. At this time, the mounting rod 23 and the third gear 25 will rotate clockwise. Then the rack 27 will slide towards the block 26 and pull the moving plate 31 towards the block 26. Then the moving plate 31 will squeeze the spring 30, making the spring 30 tighten. If the support frame 4 slides down along the through groove 32 at this time, there will be more resistance, reminding the user that the cutting blade 1 has inserted too deep into the concrete and the machine body is too close to the concrete. The strip opening 24 is clamped on both sides of the block 26. The two are in close contact, with high friction, and it will not easily slip.
[0033] See Figures 1-4 A strip-shaped outer shell 6 is fixedly installed on the outer wall of the safety cover 2. The end of the strip-shaped outer shell 6 away from the safety cover 2 extends to the rotating shaft 7. The connecting shaft 11 and the mounting rod 23 pass through the strip-shaped outer shell 6. The strip-shaped outer shell 6 covers the rotating shaft 7, the rotating wheel 8 and the transmission rope 9.
[0034] The strip-shaped outer shell 6 is connected between the rotating shaft 7 and the safety cover 2 to shield the rotating wheel 8, the transmission rope 9, the arc-shaped slider 13 and the second gear 22, so as to prevent the splashed mud from affecting the transmission of the teeth 14 and the second gear 22, and also to prevent the mud from sticking to the transmission rope 9.
[0035] See The splash guard 3 arches towards the machine body, forming a curved state with an inner arc surface corresponding to the cutting blade 1. The end of the splash guard 3 away from the adapter 10 is set as an arc surface.
[0036] The curvature of the inner arc surface of the splash guard 3 can form a flow channel. When debris and sewage come into contact with the inner arc surface, they will slide smoothly down along the inclined direction of the arc surface instead of accumulating on the splash guard 3. The outer curved surface avoids the problem of debris getting stuck at right-angled and acute edges. If it is a right-angled end, debris is easy to get stuck in the gap between the edge of the splash guard 3 and the working surface. The curved surface allows debris to be smoothly discharged along the edge, while reducing the accumulation of mud at the edge.
Claims
1. A concrete block cutting device comprising a machine body, a cutting blade (1) is arranged on the machine body, a safety cover (2) is arranged on the cutting blade (1), characterized in that, Also include, The splash guard (3) is connected with the adapter on one side, and is hinged to one side of the safety shield (2) through the adapter. One side of the safety shield (2) is connected with a rotating shaft (7), the rotating shaft (7) coincides with the axis of the cutting blade (1), and there is a gap between the rotating shaft (7) and the cutting blade (1) in the axial direction. The rotating shaft (7) is connected with the adapter, and when the fuselage swings together with the rotating shaft (7), the adapter is pulled to rotate through the transmission member, and the rotation of the adapter drives the splash guard (3) to swing in the opposite direction of the inclination of the fuselage.
2. A concrete block cutting apparatus as defined in claim 1, wherein: The adapter further comprises, The rotating wheel (8) is rotatably connected to the safety shield (2) through the shaft rod (16), and the transmission member is wound on the outer wall of the rotating wheel (8). The shaft rod (16) is coaxially arranged with the rotating wheel (8); The safety shield (2) is provided with an embedded groove (15), and the inner wall of the embedded groove (15) is rotatably connected with an adapter (10). One end of the adapter (10) corresponding to the rotating wheel (8) is connected with a connecting rod (17). The end of the shaft rod (16) away from the rotating wheel (8) extends into the embedded groove (15), and the connecting rod (17) is provided with a first gear (18) on the outer wall. The two first gears (18) are meshed and connected. The outer wall of the splash guard (3) is fixedly connected with the outer wall of the adapter (10).
3. A concrete block cutting apparatus as defined in claim 2 wherein: The side wall of the embedded groove (15) corresponding to the connecting rod (17) is provided with an annular groove (19). A plurality of protrusions (20) are fixedly installed on the inner circumferential wall of the annular groove (19). The plurality of protrusions (20) are arranged at equal intervals in the circumferential direction of the annular groove (19); The end of the connecting rod (17) away from the adapter (10) extends into the annular groove (19) and is connected with a pressing block (21). The pressing block (21) is located on the outer wall of the connecting rod (17). The end of the pressing block (21) away from the connecting rod (17) extends between the adjacent two protrusions (20) and is close to the inner circumferential wall of the annular groove (19).
4. A concrete block cutting apparatus as claimed in claim 3 wherein: The end of the rotating shaft (7) away from the cutting blade (1) is rotatably connected with a connecting shaft (11). The outer wall of the connecting shaft (11) is slidably connected with an arc-shaped sliding block (13). The arc of the arc-shaped sliding block (13) is smaller than half the circumference of the connecting shaft (11). The side wall of the arc-shaped sliding block (13) is connected with the rotating shaft (7); The transmission member comprises a transmission rope (9) wound on the rotating wheel (8). The two ends of the transmission rope (9) are connected with the two ends of the arc-shaped sliding block (13), respectively.
5. A concrete block cutting apparatus as defined in claim 4 wherein: The cutting blade (1) is provided with a support frame (4) on one side. The connecting shaft (11) is provided with a through slot (32). One end of the support frame (4) penetrates the through slot (32) and is slidably connected with the through slot (32).
6. A concrete block cutting apparatus as claimed in claim 5 wherein: The support frame (4) is provided with a strip-shaped opening (24) penetratingly. A spring (30) is arranged in the strip-shaped opening (24). A plug (26) is fixedly installed on the inner wall of the through slot (32). One end of the spring (30) is connected with the inner bottom wall of the strip-shaped opening (24), and the other end is fixedly connected with the outer wall of the plug (26). The region of the support frame (4) inserted into the through slot (32) can slide along the two sides of the plug (26).
7. A concrete block cutting apparatus as defined in claim 6 wherein: One side of the arc-shaped slider (13) is provided with a second gear (22), and the outer peripheral wall of the arc-shaped slider (13) is fixedly installed with a plurality of teeth (14) at equal intervals, and the teeth (14) are meshed and connected with the second gear (22), The connecting shaft (11) is fixedly installed with a rotating disc (12) at one end away from the rotating shaft (7), one end of the rotating disc (12) is rotatably connected with a mounting rod (23), and the end of the mounting rod (23) away from the rotating disc (12) is fixedly connected with one end of the second gear (22); The inner wall of the strip-shaped opening (24) is provided with a strip-shaped sliding groove (28), and the strip-shaped sliding groove (28) is slidably connected with a sliding plate (29), one side of the sliding plate (29) extends into the strip-shaped opening (24) and is fixedly connected with a rack (27), and the outer wall of the mounting rod (23) is fixedly installed with a third gear (25) meshed with the rack (27); The inner bottom wall of the strip-shaped opening (24) is provided with a moving plate (31), one end of the rack (27) away from the third gear (25) is fixedly connected with the moving plate (31), one end of the spring (30) away from the plug (26) is fixedly connected with the outer wall of the moving plate (31), and the moving plate (31) can slide in the strip-shaped opening (24).
8. A concrete block cutting apparatus as defined in claim 7 wherein: The outer wall of the safety shield (2) is fixedly installed with a strip-shaped shell (6), one end of the strip-shaped shell (6) away from the safety shield (2) extends to the rotating shaft (7), the connecting shaft (11) and the mounting rod (23) pass through the strip-shaped shell (6), and the strip-shaped shell (6) is arranged outside the rotating shaft (7), the rotating wheel (8) and the transmission rope (9).
9. A concrete block cutting apparatus as defined in claim 1 wherein: The splash baffle (3) is arched towards the fuselage, forming a curved state with an arc, and the inner arc surface corresponds to the cutting piece (1), and one end of the splash baffle (3) away from the adapter (10) is provided as an arc surface.