Dust-proof cutting machine

Abstract

The utility model discloses a dustproof cutting machine relates to cutting device technical field, it includes cutting machine body, cutting cover and blade still includes: spray subassembly, sets up at the front side of cutting cover, can telescopic dust collection cylinder, sets up at the bottom side of cutting machine body, its top side is equipped with the opening for collecting the chippings, and the front end of opening extends to the front end face of telescopic dust collection cylinder, and the bottom of blade is through the opening and is inserted into telescopic section. In the utility model, spray subassembly can spray and settle the lightweight floating dust generated in the cutting process of blade, inhibit dust to float and disperse, and the top opening of telescopic dust collection cylinder extends to the front end face, can be telescopic with the cutting of blade and advances reverse contraction, and the front end face always sticks to the working face, can undertake the heavy cutting chippings and the settlement of most dust falling in the cutting process, and the overall dustproof performance of cutting machine is greatly promoted, and the construction site operation environment is optimized, and the construction cleaning workload is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cutting device technology, and in particular to a dustproof cutting machine. Background Technology

[0002] Currently, most dustproof cutting machines on the market use a suction-type dustproof system. This involves connecting a suction pipe and an air pump to a cutting shroud around the blade. When the air pump is working, the dust cut by the blade is sucked into the cutting shroud and suction pipe. However, cutting debris on construction sites typically includes both light, floating dust and heavy cutting debris. For example, when cutting grooves in a wall, cement fragments may fly out. When the air pump is working, it can only suck the light, floating dust into the cutting shroud and suction pipe, while the heavy cutting debris will fall directly to the ground under gravity, resulting in a messy construction site.

[0003] Therefore, existing technologies still need to be improved and enhanced. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a dustproof cutting machine, which aims to solve the problem that when the air-suction dustproof cutting machine is working, heavy cutting debris will fall directly to the ground under the action of gravity, resulting in a dirty and messy construction site.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows: In a first aspect, this utility model provides a dustproof cutting machine, including a cutting machine body, a cutting cover disposed on the cutting machine body, and a blade disposed on the cutting machine body and partially located within the cutting cover, and further comprising: A spray assembly is disposed on the front side of the cutting cover to spray water toward the side of the blade; A retractable dust collection cylinder has an opening on its top side for collecting debris. The front end of the opening extends to the front end face of the retractable dust collection cylinder, and the bottom of the blade extends into the retractable dust collection cylinder through the opening. The retractable dust collection cylinder includes: A fixed section is provided on the bottom side of the cutting machine body, and the rear half of the opening is provided on the top front end of the fixed section. A first limiting ring is provided on the outer periphery of the fixed section. The telescopic section is sleeved on the front end of the fixed section, the front half of the opening is located on the top side of the telescopic section, and a second limiting ring is provided on the outer periphery of the front end of the telescopic section. Several telescopic guide rods are provided, with the front end of each telescopic guide rod connected to the second limiting retaining ring, and the rear end of each telescopic guide rod movably passing through the first limiting retaining ring. The distribution direction of each telescopic guide rod is consistent with the axial direction of the telescopic dust collection cylinder. Nuts are threadedly connected to the rear ends of each of the telescopic guide rods, and the front side of each nut abuts against the side of the first limiting ring that is away from the second limiting ring. Several springs are respectively sleeved on each of the telescopic guide rods and correspond one-to-one. The two ends of each spring abut against the first limiting ring and the second limiting ring, respectively.

[0006] As a further improved technical solution, when the spring is in its natural state, the front end of the blade is vertically aligned with the front end of the telescopic section; when the telescopic section retracts to abut against the first limiting ring, the front end of the telescopic section is vertically aligned with the front side of the cutting cover.

[0007] As a further improved technical solution, the second limiting ring has several circular grooves on the side near the first limiting ring, and the front end of each of the telescopic guide rods is respectively inserted into and interference-fitted with each of the circular grooves.

[0008] As a further improvement, the dustproof cutting machine also includes: An L-shaped connecting plate is attached to the bottom side of the cutting machine body by screws on one side. The U-shaped rods are provided in at least two, and each U-shaped rod is spaced apart and encircles the fixed section, and the open end of each U-shaped rod is detachably connected to the other side of the L-shaped connecting plate.

[0009] As a further improved technical solution, the spray assembly includes: The spray pipe has a U-shaped branch pipe at its front end. The spray pipe is mounted on the cutting cover. The two sides of the upper half of the blade are respectively positioned opposite to the two opposite sides of the U-shaped branch pipe. The nozzles are provided in a plurality of rows, each nozzle being arranged vertically in two opposite rows on opposite sides of the U-shaped branch pipe and connected to the U-shaped branch pipe, so as to spray water toward both sides of the blade. A water pump, with the rear end of the spray pipe connected to the water pump; A water tank, wherein the water pump is mounted on the water tank and one end extends into the water tank for pumping water.

[0010] As a further improved technical solution, the spray pipe includes: The first water pipe is detachably mounted on the cutting cover, with the U-shaped branch pipe at its front end and the first connector at its rear end. The second water pipe has a second connector at its front end, which is detachably connected to the first connector. The rear end of the second water pipe is connected to the water pump.

[0011] As a further improved technical solution, the outer side of the cutting cover is provided with several elastic buckles, and the U-shaped branch pipe is fixedly engaged with each of the elastic buckles.

[0012] As a further improved technical solution, a limiting hole is provided on the outer side of the cutting cover, and the front end of the second water pipe passes through the limiting hole.

[0013] As a further improved technical solution, the water tank includes: The housing has an opening on its top side; A cover plate is provided on the top side of the box body. The cover plate is provided with a mounting hole and several positioning posts. Each positioning post is distributed around the mounting hole. Several positioning holes are provided on the outer periphery of the water pump. Each positioning hole is fitted onto each positioning post and corresponds to it. The bottom end of the water pump extends into the water tank through the mounting hole. The box body is equipped with multiple casters on its bottom side.

[0014] Compared with the prior art, the embodiments of this utility model have the following advantages: This invention features a spray assembly on the front side of the cutting cover that sprays water towards the side of the blade, and a retractable dust collection cylinder mounted on the bottom side of the cutting machine body. The spray assembly can spray and settle the light floating dust generated during the cutting process, suppressing dust dispersion and preventing light dust from overflowing and polluting the working environment and affecting the health of construction workers. At the same time, the top opening of the retractable dust collection cylinder extends to the front end face, and the bottom of the blade extends into the retractable dust collection cylinder. During the cutting operation, the dust collection cylinder can retract in the opposite direction as the blade moves, and the front end face always fits against the working surface. It can collect heavy cutting debris that falls during the cutting process and most of the settled dust, preventing heavy debris from falling to the ground. It achieves a dual dust prevention and dust collection effect of spraying and settling light dust and collecting heavy debris, greatly improving the overall dust prevention performance of the cutting machine, optimizing the working environment at the construction site, and reducing the amount of cleaning work. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a dustproof cutting machine provided by this utility model; Figure 2 This is a schematic diagram of the assembly structure of the cutting machine body and the retractable dust collection cylinder in this utility model; Figure 3 for Figure 2 Enlarged diagram of A in the middle; Figure 4 This is a three-dimensional structural diagram of the retractable dust collection cylinder in this utility model; Figure 5 This is a three-dimensional structural diagram of the spray assembly in this utility model; Figure 6 for Figure 5 Enlarged diagram of B in the middle; Figure 7 This is a three-dimensional structural diagram of the cutting machine body in this utility model; Figure 8 This is a three-dimensional structural diagram of the water tank in this utility model; Figure 9 This is a three-dimensional structural diagram of the water pump in this utility model.

[0016] In the diagram: 1. Cutting machine body; 2. Cutting cover; 21. Elastic buckle; 22. Limiting hole; 3. Blade; 4. Spray assembly; 41. Spray pipe; 411. First water pipe; 4111. U-shaped branch pipe; 4112. First connector; 412. Second water pipe; 4121. Second connector; 42. Nozzle; 43. Water pump; 431. Positioning hole; 44. Water tank; 441. Box body; 442. Cover plate; 4421. Mounting hole; 4422. Positioning post; 443. Caster wheel; 5. Telescopic dust collection cylinder; 51. Fixed section; 511. First limiting retaining ring; 52. Telescopic section; 521. Second limiting retaining ring; 53. Telescopic guide rod; 54. Nut; 55. Spring; 6. L-shaped connecting plate; 7. U-shaped rod. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] Example Please see Figures 1 to 9 The dustproof cutting machine includes a cutting machine body 1, a cutting cover 2 mounted on the cutting machine body 1, and a blade 3 mounted on the cutting machine body 1 and partially located within the cutting cover 2. It also includes a spray assembly 4, located on the front side of the cutting cover 2, for spraying water towards the side of the blade 3; and a retractable dust collection cylinder 5, located on the bottom side of the cutting machine body 1. Along the length of the retractable dust collection cylinder 5, its top side has an opening for collecting debris, the front end of which extends to the front end face of the retractable dust collection cylinder 5. The bottom of the blade 3 extends into the retractable dust collection cylinder 5 through the opening. When the front end of the blade 3 touches the working surface and moves forward to cut, the retractable dust collection cylinder 5 retracts in the opposite direction of the blade 3's cutting motion, and its front end face always abuts against the working surface.

[0019] like Figure 1As shown, in one embodiment of this invention, the dustproof cutting machine includes a cutting machine body 1, a cutting cover 2 disposed on the cutting machine body 1, and a blade 3 disposed on the cutting machine body 1 and partially located within the cutting cover 2. It also includes a spray assembly 4 and a retractable dust collection cylinder 5. Specifically, the cutting cover 2 is fixedly disposed on the rear half of the upper half of the blade 3, providing a protective shield for a portion of the blade 3 and providing a stable mounting point for the spray assembly 4. The spray assembly 4 is positioned directly opposite the cutting area of ​​the blade 3, continuously spraying water mist or small water droplets onto the side of the blade 3 as it rotates at high speed to cut the material. The high-speed rotation of the blade 3 causes the water mist or droplets to be thrown forward and sideways, quickly enveloping and settling the lightweight floating dust generated during cutting, effectively suppressing the dust from spreading in all directions. The retractable dust collection cylinder 5 adopts a telescopic segmented structure, which can adaptively extend and retract according to the cutting feed stroke of the cutting machine. Its front end face always fits tightly against the working surface to be cut, forming a fully enclosed receiving space for the bottom cutting area of ​​the blade 3. Heavy cutting debris generated during the cutting process of the blade 3 falls directly into the retractable dust collection cylinder 5 under the action of gravity, and will not fall to the ground. At the same time, the through-hole on the top side of the retractable dust collection cylinder 5 can adapt to the cutting trajectory of the blade 3, avoiding interference or jamming between the blade 3 and the dust collection cylinder during operation, ensuring the smoothness of the cutting operation of the cutting machine. Combined with the dust suppression function of the spray component 4 and the debris collection function of the retractable dust collection cylinder 5, the overall dust prevention and dust collection effect of the equipment is comprehensively improved, the cleanliness of the construction site is improved, and the cleaning difficulty is reduced. It should be noted that the size of the retractable dust collection cylinder 5 in this embodiment is not limited. The size and opening size can be adjusted according to actual needs. The larger the retractable dust collection cylinder 5 and the larger the opening, the better its effect of collecting settled dust.

[0020] like Figures 2 to 4As shown, in one embodiment of this example, the retractable dust collection cylinder 5 includes a fixed section 51, a telescopic section 52, a telescopic guide rod 53, a nut 54, and a spring 55. The fixed section 51 is located on the bottom side of the cutting machine body 1, and the rear half of the opening is located on the top front end of the fixed section 51. A first limiting ring 511 is provided on the outer periphery of the fixed section 51. The telescopic section 52 is sleeved on the front end of the fixed section 51, and the front half of the opening is located on the top side of the telescopic section 52. A second limiting ring 521 is provided on the outer periphery of the front end of the telescopic section 52. Several telescopic guide rods 53 are provided, and the front end of each telescopic guide rod 53 is respectively connected to... The second limiting ring 521 is connected, and the rear ends of each of the telescopic guide rods 53 are respectively movably inserted through the first limiting ring 511. The distribution direction of each of the telescopic guide rods 53 is consistent with the axial direction of the telescopic dust collection cylinder 5. The rear ends of each of the telescopic guide rods 53 are respectively threaded with nuts 54, and the front side of each nut 54 abuts against the side of the first limiting ring 511 away from the second limiting ring 521. Several springs 55 are provided, and each spring 55 is respectively sleeved on each of the telescopic guide rods 53 and corresponds to it. The two ends of each spring 55 abut against the first limiting ring 511 and the second limiting ring 521 respectively.

[0021] Specifically, the fixed section 51 serves as a base and is securely connected to the cutting machine body 1, providing an installation reference for the entire retractable dust collection cylinder 5. The rear end of the fixed section 51 is equipped with a sealing plug (not shown) to close the port. The rear port has an internal thread section, which is threaded to the external thread section on the sealing plug. This allows for the temporary storage of a certain amount of debris. When the debris in the rear end of the fixed section 51 needs to be discharged, its rear port is aligned with the garbage bag, and the sealing plug is rotated to remove it, thus opening the rear port of the fixed section 51 and discharging the debris into the garbage bag. The sealing plug is then rotated again to re-fix the fixed section 51 at the rear port.

[0022] The telescopic section 52 can slide axially along the outer side of the fixed section 51, forming a continuous and through-hole debris collection opening together with the top side of the fixed section 51, ensuring that debris can fall smoothly into the cylinder during the movement of the blade 3. The telescopic guide rod 53 acts as a sliding guide for the telescopic section 52, restricting the telescopic section 52 to move only axially, preventing radial swaying and torsion of the telescopic section 52, and avoiding interference between the blade 3 and the side wall of the dust collection cylinder. The spring 55 continuously applies a forward elastic thrust to the second limiting retaining ring 521, so that the front end face of the telescopic section 52 can always press against the working surface; when the cutting machine moves forward to cut, the working surface pushes the telescopic section 52 backward, and the telescopic section 52 pushes the telescopic guide rod 53 backward through the second limiting retaining ring 521, the spring 55 is compressed, and the telescopic section achieves adaptive contraction of the dust collection cylinder; after the cutting path retracts, the elastic force of the spring 55 pushes the telescopic section 52 to automatically extend forward, continuously maintaining the front end face in contact with the working surface. The nut 54 at the rear end of the telescopic guide rod 53 limits the maximum forward extension of the telescopic section 52, preventing the telescopic section 52 from completely disengaging from the fixed section 51 under the thrust of the spring 55, thus serving as a travel limit. Specifically, the rear end of the telescopic guide rod 53 has a short thread for engaging with the nut 54 for limiting and fixing. This structure relies on the spring 55 for automatic clamping, and the guide rod ensures smooth and reliable telescopic movement without requiring additional power. The structure is simple and durable, capable of continuously absorbing heavy debris generated during cutting, effectively preventing debris from scattering.

[0023] Furthermore, when the spring 55 is in its natural state, the front end of the blade 3 is vertically aligned with the front end of the telescopic section 52; when the telescopic section 52 retracts to abut against the first limiting retaining ring 511, the front end of the telescopic section 52 is vertically aligned with the front side of the cutting cover 2. Specifically, the spring 55 being in its naturally extended state corresponds to the initial cutting condition of the cutting machine. At this time, the telescopic section 52 extends to its maximum stroke, and the front end of the telescopic section 52 is vertically aligned with the front end of the blade 3. When the blade 3 just contacts the working surface to start cutting, the front end of the telescopic section 52 can immediately fit against the working surface, so that a closed collection area is simultaneously formed below the cutting point of the blade 3. The debris can fall into the dust collection cylinder from the moment it is generated, preventing the debris from falling directly at the beginning of the cutting stage. As the cutting machine moves forward to cut, the working surface pushes the telescopic section 52 backward to compress the spring 55, and the telescopic section 52 moves backward smoothly along the telescopic guide rod 53; until the rear end of the telescopic section 52 abuts against the first limit stop ring 511, it reaches the limit retraction position. At this time, the front end of the telescopic section 52 is vertically aligned with the front side of the cutting cover 2, limiting the maximum feed distance of the cutting machine. In actual use, since the spray end of the spray assembly 4 is located on the front side of the cutting cover 2, the maximum feed degree of the cutting machine is that the spray assembly 4 must stop moving forward when it gets close to the working surface.

[0024] Furthermore, the second limiting ring 521 has several circular grooves (not shown) on the side near the first limiting ring 511. The front end of each telescopic guide rod 53 is respectively inserted into each of the circular grooves with an interference fit. Specifically, by opening circular grooves on the second limiting ring 521, a positioning and mounting position is provided for the front end of the telescopic guide rod 53. The front end of the telescopic guide rod 53 and the circular groove are assembled by an interference fit, which can achieve a firm connection between the guide rod and the second limiting ring 521 without additional fasteners. This is convenient for assembly and facilitates subsequent disassembly and replacement of new parts, effectively preventing the telescopic guide rod 53 from loosening or rotating during reciprocating telescopic movement. At the same time, the circular grooves can provide radial constraint on the front end of the telescopic guide rod 53, ensuring that the axis of the guide rod is consistent with the axis of the telescopic dust collection cylinder 5, avoiding the guide rod from being skewed, ensuring that the telescopic section 52 slides smoothly along the axis, reducing jamming during telescopic movement, and improving the operational stability of the entire telescopic structure. It should be noted that the telescopic guide rod 53 and the circular grooves can also be fixedly connected by applying glue.

[0025] In one embodiment of this invention, the dustproof cutting machine further includes an L-shaped connecting plate 6 and U-shaped rods 7. One side of the L-shaped connecting plate 6 is connected to the bottom side of the cutting machine body 1 by screws. At least two U-shaped rods 7 are provided, each U-shaped rod 7 is spaced apart and encircles the fixed section 51, and the open end of each U-shaped rod 7 is detachably connected to the other side of the L-shaped connecting plate 6. Specifically, the L-shaped connecting plate 6 serves as a transition mounting base, and is fixedly assembled to the bottom side of the cutting machine body 1 using screws. The connection method is stable and reliable, and it also has the characteristics of convenient disassembly and assembly, facilitating subsequent equipment maintenance and parts replacement. The fixed section 51 of the retractable dust collection cylinder 5 is secured by multiple sets of U-shaped rods 7 arranged at intervals. This provides multi-point, all-around clamping and limiting constraint on the fixed section 51, effectively preventing it from shaking, shifting, twisting, or loosening during equipment operation. This ensures that the relative position of the fixed section 51 and the cutting machine body 1 remains constant, and that one side of the fixed section 51 is tightly pressed against one side of the cutting machine body 1, providing a stable installation reference for the smooth telescopic movement of the telescopic section 52. Simultaneously, the U-shaped rods 7 and the L-shaped connecting plate 6 are detachably connected, allowing workers to quickly disassemble the U-shaped rods 7 as needed, releasing the clamping constraint on the fixed section 51, and thus completing the overall disassembly, cleaning, maintenance, or replacement of the retractable dust collection cylinder 5. The specific connection method between the U-shaped rod 7 and the L-shaped connecting plate 6 is as follows: the open end of the U-shaped rod 7 passes through the L-shaped connecting plate 6, and both ends of its open end are provided with external thread sections. The external thread sections pass through the L-shaped connecting plate 6, and the U-shaped rod 7 is locked onto the L-shaped connecting plate 6 by installing hexagonal nuts on the external thread sections.

[0026] like Figure 5As shown, in one embodiment of this example, the spray assembly 4 includes a spray pipe 41, nozzles 42, a water pump 43, and a water tank 44. The front end of the spray pipe 41 is provided with a U-shaped branch pipe 4111. The spray pipe 41 is mounted on the cutting cover 2. The two sides of the upper half of the blade 3 are respectively arranged opposite to the two opposite sides of the U-shaped branch pipe 4111. Several nozzles 42 are provided, and each nozzle 42 is arranged in two rows vertically opposite to the two opposite sides of the U-shaped branch pipe 4111 and is connected to the U-shaped branch pipe 4111 to spray water onto both sides of the blade 3. The rear end of the spray pipe 41 is connected to the water pump 43. The water pump 43 is mounted on the water tank 44 and one end extends into the water tank 44 for pumping water.

[0027] Specifically, the front end of the spray pipe 41 is fixedly mounted on the outside of the cutting cover 2, forming a stable support structure with the cutting cover 2. This effectively prevents the spray pipe 41 from shifting or loosening under cutting vibration conditions, ensuring the accuracy of the spray position. The U-shaped branch pipe 4111 at the front end is arranged around the upper half of the blade 3 on both sides. Together with multiple nozzles 42 arranged in two rows opposite each other along the vertical direction, a large spray range can be formed for the cutting dust-generating areas on both sides of the blade 3. During operation, the water pump 43 draws water from the water tank 44 and delivers it to the U-shaped branch pipe 4111 through the spray pipe 41. Finally, the spray water mist is evenly sprayed out by the nozzles 42 on both sides. The water mist can quickly envelop the fine, light dust generated during the cutting process, causing the floating dust to settle quickly and inhibiting the spread of dust from the source. Meanwhile, the vertically arranged nozzles 42 on both sides can conform to the cutting trajectory of the blade 3, continuously spraying the surface of the blade 3 to cool it down and reduce dust. This not only effectively improves the dust pollution problem at the construction site and protects the health of the operators, but also reduces the high-temperature wear generated by the high-speed cutting of the blade 3 and extends the service life of the blade 3. In addition, the overall pipeline layout is compact and will not interfere with the cutting operation of the blade 3 or the extension and retraction of the telescopic dust collection cylinder 5. The overall operational stability and dust prevention effect of the equipment are significantly improved.

[0028] like Figure 6As shown, the spray pipe 41 further includes a first water pipe 411 and a second water pipe 412. The first water pipe 411 is detachably mounted on the cutting cover 2, with a U-shaped branch pipe 4111 at its front end and a first connector 4112 at its rear end. The second water pipe 412 has a second connector 4121 at its front end and is detachably connected to the first connector 4112 through the second connector 4121. The rear end of the second water pipe 412 is connected to the water pump 43. Specifically, the first water pipe 411, together with the U-shaped branch pipe 4111 at its front end and the nozzle 42, is integrated and installed on the cutting cover 2, moving synchronously with the cutting machine body 1. The second water pipe 412 connects the water pump 43 and the water tank 44, serving as a water supply transition pipeline. The first connector 4112 and the second connector 4121 enable quick assembly and disassembly, allowing the spray pipe 41 to be split into two sections. When the cutting machine needs to be moved, stored, or the cutting cover 2, blade 3, and nozzle 42 need to be inspected or replaced, the two sections of the water pipe can be quickly separated without disassembling the entire spray assembly 4. This convenient operation is achieved because the first connector 4112 and the second connector 4121 are existing mechanical parts. Furthermore, the segmented pipe structure reduces the difficulty of pipe assembly, facilitates the individual cleaning of the nozzle 42 and the U-shaped branch pipe 4111, and prevents dust and impurities generated during cutting from clogging the nozzle 42. In case of pipe damage, the corresponding pipe section can be replaced selectively, without replacing the entire spray pipe 41, thus reducing future maintenance costs.

[0029] like Figure 7 As shown, further, the outer side of the cutting cover 2 is provided with several elastic buckles 21, and the U-shaped branch pipe 4111 is engaged and fixed with each of the elastic buckles 21. The outer side of the cutting cover 2 is provided with a limiting hole 22, and the front end of the second water pipe 412 passes through the limiting hole 22. Specifically, the multiple elastic buckles 21 arranged on the outer side of the cutting cover 2 are used to engage and limit the U-shaped branch pipe 4111. During assembly, the U-shaped branch pipe 4111 can be directly pressed into the elastic buckle 21 to complete the fixation. During disassembly, the elastic buckle 21 can be pried outward to release the constraint, realizing the quick assembly and disassembly of the U-shaped branch pipe 4111, which facilitates the cleaning and maintenance of the nozzle 42 and the U-shaped branch pipe 4111. The elastic buckles 21 can adapt to the vibration generated by the cutting operation, effectively constrain the U-shaped branch pipe 4111, prevent the pipeline from shaking and shifting during the spraying process, and ensure the stability of the spraying direction of the nozzle 42. The limiting hole 22 on the outside of the cutting cover 2 provides positioning constraint for the front end of the second water pipe 412, restricting the second water pipe 412 from swinging excessively during operation, preventing pipe twisting and pulling on the joint between the first water pipe 411 and the second water pipe 412, and preventing the joint from loosening and leaking. The elastic buckle 21 and the limiting hole 22 cooperate with each other to form multi-point positioning support for the spray pipe 41, making the pipe layout neat and orderly, reducing the risk of interference between the pipe and the blade 3 and the workpiece, and ensuring the long-term stable operation of the spray assembly 4.

[0030] like Figure 8 and Figure 9 As shown, in one embodiment of this example, the water tank 44 includes a tank body 441, a cover plate 442, and casters 443. The top side of the tank body 441 is open, covering the top side of the tank body 441. The cover plate 442 is provided with a mounting hole 4421 and a plurality of positioning posts 4422. Each of the positioning posts 4422 is distributed around the mounting hole 4421. The water pump 43 is provided with a plurality of positioning holes 431 on its outer periphery. Each of the positioning holes 431 is respectively fitted onto each of the positioning posts 4422 and corresponds to it one by one. The bottom end of the water pump 43 extends into the water tank 44 through the mounting hole 4421. The bottom side of the tank body 441 is provided with a plurality of casters 443.

[0031] Specifically, the housing 441 adopts a top-side opening structure, which, together with the removable cover plate 442, achieves a complete sealed coverage of the housing 441. This facilitates the operator's daily addition of clean water and cleaning of accumulated dust and dirt inside the housing 441, while effectively preventing external debris and cutting fragments from falling into the water tank 44 during operation, thus avoiding water pollution and blockage of the water pump 43. Multiple positioning posts 4422 arranged around the mounting holes 4421 on the cover plate 442 precisely engage with the positioning holes 431 on the outer periphery of the water pump 43, providing circumferential positioning and limiting constraints on the water pump 43. This effectively restricts the displacement, rotation, and shaking of the water pump 43 caused by motor vibration during operation, ensuring the stability of the water pump 43's installation position. This allows the bottom suction end of the water pump 43 to be stably suspended in the water inside the housing 441, ensuring continuous and stable pumping operations. The water pump 43 is arranged vertically through the mounting holes 4421, resulting in a compact structure and simple assembly, facilitating quick disassembly, maintenance, and replacement. Meanwhile, multiple casters 443 mounted on the bottom of the tank 441 enable the entire water tank 44 to move flexibly, allowing it to follow the cutting machine's operating position and adapt to varying cutting conditions on the construction site. This eliminates the need for frequent manual handling of the water tank 44, significantly reducing labor intensity and improving the overall ease of use and operational flexibility of the equipment.

[0032] Furthermore, the top end of each positioning post 4422 can be set as an external thread section. By adding a hexagonal nut to the external thread section at the top end of each positioning post 4422, the hexagonal nut can press and fix the water pump 43 onto the cover plate 442, thereby improving the connection stability between the water pump 43 and the cover plate 442.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Of course, the above description of the embodiments of this utility model is quite detailed, but it should not be construed as a limitation on the scope of protection of this utility model. This utility model may have other implementation methods. Based on this implementation method, other implementation methods obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model. The scope of protection of this utility model is determined by the appended claims.

Claims

1. A dustproof cutting machine, comprising a cutting machine body, a cutting cover disposed on the cutting machine body, and a blade disposed on the cutting machine body and partially located within the cutting cover, characterized in that, Also includes: A spray assembly is disposed on the front side of the cutting cover to spray water toward the side of the blade; A retractable dust collection cylinder has an opening on its top side for collecting debris. The front end of the opening extends to the front end face of the retractable dust collection cylinder, and the bottom of the blade extends into the retractable dust collection cylinder through the opening. The retractable dust collection cylinder includes: A fixed section is provided on the bottom side of the cutting machine body, and the rear half of the opening is provided on the top front end of the fixed section. A first limiting ring is provided on the outer periphery of the fixed section. The telescopic section is sleeved on the front end of the fixed section, the front half of the opening is located on the top side of the telescopic section, and a second limiting ring is provided on the outer periphery of the front end of the telescopic section. Several telescopic guide rods are provided, with the front end of each telescopic guide rod connected to the second limiting retaining ring, and the rear end of each telescopic guide rod movably passing through the first limiting retaining ring. The distribution direction of each telescopic guide rod is consistent with the axial direction of the telescopic dust collection cylinder. Nuts are threadedly connected to the rear ends of each of the telescopic guide rods, and the front side of each nut abuts against the side of the first limiting ring that is away from the second limiting ring. Several springs are respectively sleeved on each of the telescopic guide rods and correspond one-to-one. The two ends of each spring abut against the first limiting ring and the second limiting ring, respectively.

2. The dustproof cutting machine according to claim 1, characterized in that, When the spring is in its natural state, the front end of the blade is vertically aligned with the front end of the telescopic section; when the telescopic section retracts to abut against the first limiting ring, the front end of the telescopic section is vertically aligned with the front side of the cutting cover.

3. The dustproof cutting machine according to claim 1, characterized in that, The second limiting ring has several circular grooves on the side near the first limiting ring, and the front end of each telescopic guide rod is respectively inserted into each of the circular grooves and interference fits.

4. The dustproof cutting machine according to claim 1, characterized in that, Also includes: An L-shaped connecting plate is attached to the bottom side of the cutting machine body by screws on one side. The U-shaped rods are provided in at least two, and each U-shaped rod is spaced apart and encircles the fixed section, and the open end of each U-shaped rod is detachably connected to the other side of the L-shaped connecting plate.

5. The dustproof cutting machine according to claim 1, characterized in that, The spray assembly includes: The spray pipe has a U-shaped branch pipe at its front end. The spray pipe is mounted on the cutting cover. The two sides of the upper half of the blade are respectively positioned opposite to the two opposite sides of the U-shaped branch pipe. The nozzles are provided in a plurality of rows, each nozzle being arranged vertically in two opposite rows on opposite sides of the U-shaped branch pipe and connected to the U-shaped branch pipe, so as to spray water toward both sides of the blade. A water pump, with the rear end of the spray pipe connected to the water pump; A water tank, wherein the water pump is mounted on the water tank and one end extends into the water tank for pumping water.

6. The dustproof cutting machine according to claim 5, characterized in that, The spray pipe includes: The first water pipe is detachably mounted on the cutting cover, with the U-shaped branch pipe at its front end and the first connector at its rear end. The second water pipe has a second connector at its front end, which is detachably connected to the first connector. The rear end of the second water pipe is connected to the water pump.

7. The dustproof cutting machine according to claim 6, characterized in that, The outer side of the cutting cover is provided with several elastic buckles, and the U-shaped branch pipe is fixedly engaged with each of the elastic buckles.

8. The dustproof cutting machine according to claim 6, characterized in that, The outer side of the cutting cover is provided with a limiting hole, and the front end of the second water pipe passes through the limiting hole.

9. The dustproof cutting machine according to claim 5, characterized in that, The water tank includes: The housing has an opening on its top side; A cover plate is provided on the top side of the box body. The cover plate is provided with a mounting hole and several positioning posts. Each positioning post is distributed around the mounting hole. Several positioning holes are provided on the outer periphery of the water pump. Each positioning hole is fitted onto each positioning post and corresponds to it. The bottom end of the water pump extends into the water tank through the mounting hole. The box body is equipped with multiple casters on its bottom side.

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