Concrete cutting machine with dust reduction function

CN224915072UActive Publication Date: 2026-10-30SHANGHAI TIANGU TESTING TECH CO LTD
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Patent Information

Application Number
CN202522123349.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-09
Publication Date
2026-10-30
Estimated Expiration
2035-10-09

AI Technical Summary

Technical Problem

[0005]通过设置过尘网、安装槽和风机,能够使吸取切割机在切割过程中产生的灰尘,但是风机主要从底部对灰尘进行吸取,同时缺乏相应的遮挡机构,使得切割过程中灰尘向四周溅射扩散,依靠风机从底部吸取难以进行充分阻挡,使得部分灰尘散落到底板四周各处,导致降尘效果变差,为此,本实用新型提出了一种具有降尘功能的混凝土切割机

Benefits of technology

[0020]1、本技术方案通过设置的一对伸缩气缸带动一对夹板相向运动,能够对混凝土构件进行夹持固定,使其保持稳定,同时驱动一对第二电动伸缩杆带动电机和切割刀片向下运动,靠近混凝土构件,并驱动电机带动切割刀片旋转,使其在滑杆气缸的辅助下沿着混凝土构件进行切割处理。

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Abstract

The utility model discloses a concrete cutting machine with dust falling function relates to concrete cutting machine technical field, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with the dust cover body in the concrete cutting machine, and the dust cover body is equipped with
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Description

Technical Field

[0001] This utility model belongs to the technical field of concrete cutting machines, and in particular relates to a concrete cutting machine with dust reduction function. Background Technology

[0002] Concrete is an engineering composite material in which aggregates (such as sand and gravel) are bound together by cementing materials (such as cement and lime). A concrete cutter is a mechanical device used to cut concrete components, commonly used for cutting concrete walls, floor slabs, pavements, and other structures. Its core working principle is to grind and cut the concrete using a high-speed rotating diamond saw blade or wire saw.

[0003] For example, the concrete cutting machine proposed in announcement number CN207156188U includes a base plate. A motor is fixedly installed on the top left side of the base plate. A disc is fixedly connected to the output end of the motor. A pin is fixedly connected to the top left side of the disc. A connecting rod is movably connected to the surface of the pin. A connecting seat is movably connected to the right end of the connecting rod via a rotating shaft. A moving rod is fixedly connected to the right side of the connecting seat. A support rod is fixedly connected to the top of the base plate and to the right of the motor. A limit block is fixedly connected to the top of the support rod. This utility model, through the combination of the base plate, motor, disc, pin, connecting rod, connecting seat, moving rod, support rod, limit block, through hole, clamping plate one, clamping plate two, mounting rod, mounting plate, electric telescopic rod, motor two, and cutting disc, achieves good clamping effect, prevents concrete from shaking during cutting, ensures precise cutting, and saves materials.

[0004] The above-mentioned patent has the following defects in use:

[0005] By setting up a dust filter, mounting slots, and a fan, the dust generated during the cutting process can be absorbed. However, the fan mainly absorbs dust from the bottom, and there is a lack of corresponding shielding mechanisms, which causes dust to splash and spread in all directions during the cutting process. Relying on the fan to absorb dust from the bottom is not enough to block it sufficiently, causing some dust to scatter around the base plate, resulting in poor dust reduction effect. Therefore, this utility model proposes a concrete cutting machine with dust reduction function. Utility Model Content

[0006] This utility model provides a concrete cutting machine with dust reduction function. A telescopic cylinder and clamping plate can clamp and fix the concrete component, keeping it stable. Simultaneously, a drive motor drives the cutting blade, assisted by a sliding cylinder and a second electric telescopic rod, to cut along the concrete component. A dust collection mechanism uses negative pressure to drive a pair of dust collection frames on both sides of the cutting blade to collect the dust generated during cutting. A dust cover and sealing door form a sealed space to block some of the splashed dust that is not collected, preventing it from scattering around the cutting table and effectively blocking the splashed dust, thus enhancing the dust reduction effect. A deflection adjustment mechanism drives the first electric telescopic rod to deflect the inclined tube, adjusting the dust collection angle of the dust collection frames according to usage requirements, thereby enhancing the dust collection effect. In summary, this invention solves the problems in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model discloses a concrete cutting machine with dust reduction function, comprising:

[0009] A cutting table and a dust cover are provided. The top of the cutting table is fixedly connected to the bottom of the dust cover. The dust cover has a pair of L-shaped plates inside. The opposite sides of the pair of L-shaped plates are rotatably connected to a cutting blade through a bearing and a rotating shaft. A motor is fixedly connected to the inner wall of one side of the L-shaped plate, and the output end of the motor is fixedly connected to the rotating shaft on one side.

[0010] A pair of dust collection mechanisms are provided on one side of the cutting blade and are used to collect dust generated during the cutting process.

[0011] A pair of deflection adjustment mechanisms are provided at the bottom of the L-shaped plate, and the deflection adjustment mechanisms are used to adjust the suction angle of the suction mechanism.

[0012] The dust collection mechanism includes a dust collection box fixedly connected to the top of an L-shaped plate. An air extractor is fixedly connected to the top of the L-shaped plate, and an air extraction pipe is fixedly connected between the air extraction end of the air extractor and one side of the dust collection box. A dust filter is fixedly connected to the inner wall of the air extraction pipe. A connecting bend is fixedly connected to the side of the dust collection box away from the air extraction pipe, and the bottom end of the connecting bend penetrates the top of the L-shaped plate and is fixedly connected to a flexible hose. One end of the flexible hose is fixedly connected to an inclined tube, and one end of the inclined tube is fixedly connected to a dust collection frame.

[0013] Furthermore, a pair of telescopic cylinders are fixedly connected to the inner wall of the dust cover, and the output ends of the pair of telescopic cylinders are fixedly connected to clamps.

[0014] Furthermore, a damp sponge pad is placed on the inner wall of the dust collection box, the front side of the dust collection box is open, and a sealing plate is hinged to the front side of the dust collection box.

[0015] Furthermore, the deflection adjustment mechanism includes a connecting plate sleeved on the inclined tube, a connecting horizontal plate fixedly connected to the top of the connecting plate, a first electric telescopic rod provided at the top of the connecting horizontal plate, and deflection movable blocks fixedly connected to both ends of the first electric telescopic rod. Arc-shaped pieces are rotatably connected to both sides of a pair of deflection movable blocks through a rotating shaft and bearings, and the sides of the two pairs of arc-shaped pieces that are far apart are fixedly connected to the inner top of the dust cover and the top of the connecting horizontal plate, respectively.

[0016] Furthermore, a sliding cylinder is fixedly connected to the inner top of the dust cover, and a top plate is fixedly connected to the output end of the sliding cylinder. A pair of second electric telescopic rods are embedded in the top plate, and the bottom ends of the pair of second electric telescopic rods are respectively fixedly connected to the top ends of a pair of L-shaped plates.

[0017] Furthermore, a pair of I-shaped rods are fixedly connected to the inner top of the dust cover, and a movable sleeve block is fitted on the outer wall of the I-shaped rod. One side of the movable sleeve block is fixedly connected to the outer wall of the second electric telescopic rod.

[0018] Furthermore, the front side of the dust cover is open, and a pair of mutually contacting sealing doors are hinged to the front side of the dust cover.

[0019] The present invention has the following advantages over the prior art:

[0020] 1. This technical solution uses a pair of telescopic cylinders to drive a pair of clamping plates to move in opposite directions, which can clamp and fix the concrete component to keep it stable. At the same time, it drives a pair of second electric telescopic rods to drive the motor and cutting blades to move downwards, close to the concrete component, and drive the motor to drive the cutting blades to rotate, so that they can cut along the concrete component with the assistance of the sliding cylinder.

[0021] 2. This technical solution uses a dust extraction mechanism to drive an air pump to draw air from the dust collection box and various pipes and discharge it outwards, generating negative pressure. This negative pressure drives a pair of dust extraction frames on both sides of the cutting blade to collect the generated dust. At the same time, the dust cover and sealing door form a sealed space to block some of the splashed dust that is not collected, preventing it from scattering around the cutting table. This effectively blocks the splashed dust and enhances the dust reduction effect.

[0022] 3. This technical solution uses a deflection adjustment mechanism to drive the first electric telescopic rod to deflect the inclined tube, thereby adjusting the suction angle of the dust collection frame according to usage requirements and enhancing the suction effect.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of a concrete cutting machine with dust reduction function according to the present invention;

[0026] Figure 2 This is a partial cross-sectional view of a concrete cutting machine with dust reduction function according to the present invention.

[0027] Figure 3 This is a partial cross-sectional structural diagram of the L-shaped plate, the dust collection mechanism, and the deflection adjustment mechanism in this utility model;

[0028] Figure 4 This is a partial three-dimensional structural diagram of the dust collection mechanism and the deflection adjustment mechanism in this utility model;

[0029] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0030] Figure 6 This is a partial three-dimensional structural diagram of a concrete cutting machine with dust reduction function from an upward viewing angle according to this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Cutting table; 2. Dust cover; 3. Telescopic cylinder; 4. Clamping plate; 5. L-shaped plate; 6. Cutting blade; 7. Motor; 8. Dust collection mechanism; 801. Dust collection box; 802. Air extractor; 803. Air extraction pipe; 804. Dust filter; 805. Connecting bend; 806. Flexible hose; 807. Inclined pipe; 808. Dust collection frame; 809. Wet sponge pad; 8010. Sealing plate; 9. Deflection adjustment mechanism; 901. Connecting plate; 902. Connecting cross plate; 903. Arc-shaped piece; 904. Deflection movable block; 905. First electric telescopic rod; 10. Sliding rod cylinder; 11. Top plate; 12. Second electric telescopic rod; 13. I-shaped rod; 14. Moving sleeve block; 15. Sealing door. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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. Specific Implementation

[0035] Please see Figures 1-6 As shown, this utility model discloses a concrete cutting machine with dust reduction function, comprising:

[0036] The cutting table 1 and the dust cover 2 are fixedly connected at the top and bottom of the dust cover 2. The dust cover 2 is provided with a pair of L-shaped plates 5 inside, and the cutting blades 6 are rotatably connected between the opposite sides of the pair of L-shaped plates 5 through bearings and a rotating shaft. A motor 7 is fixedly connected to the inner wall of one side of the L-shaped plate 5, and the output end of the motor 7 is fixedly connected to the rotating shaft on one side.

[0037] A pair of dust collection mechanisms 8 are provided on one side of the cutting blade 6, and the dust collection mechanisms 8 are used to collect the dust generated by the cutting blade 6 during the cutting process.

[0038] A pair of deflection adjustment mechanisms 9 are provided at the bottom of the L-shaped plate 5, and the deflection adjustment mechanisms 9 are used to adjust the suction angle of the suction mechanism 8.

[0039] The dust collection mechanism 8 includes a dust collection box 801 fixedly connected to the top of the L-shaped plate 5. An air extractor 802 is fixedly connected to the top of the L-shaped plate 5. An air extraction pipe 803 is fixedly connected between the air extraction end of the air extractor 802 and one side of the dust collection box 801. A dust filter 804 is fixedly connected to the inner wall of the air extraction pipe 803. A connecting bend 805 is fixedly connected to the side of the dust collection box 801 away from the air extraction pipe 803. The bottom end of the connecting bend 805 passes through the top of the L-shaped plate 5 and is fixedly connected to a flexible hose 806. One end of the flexible hose 806 is fixedly connected to an inclined tube 807, and one end of the inclined tube 807 is fixedly connected to a dust collection frame 808.

[0040] In the specific implementation process, a concrete component is placed and fixed on the cutting table 1. Then, the cutting blade 6 is driven to contact the cutting position of the concrete component, and the motor 7 drives the cutting blade 6 to rotate, so that it cuts the concrete component. At the same time, the exhaust fan 802 is driven to extract the air from the dust collection box 801 and each pipe and discharge it to the outside, so that the dust collection box 801 and each pipe are generated with negative pressure. Under the attraction of this negative pressure, the dust generated near the cutting blade 6 is sucked into the dust collection frame 808 on both sides with the air flow, and then flows into the dust collection box 801 through the inclined pipe 807, the hose 806 and the connecting bend pipe 805. The dust is filtered and blocked by the dust filter 804, so that the dust stays in the dust collection box 801, and the air is discharged to the outside through the exhaust pipe 803. This realizes the collection of dust generated by the cutting blade 6 during the cutting process.

[0041] Among them, a pair of telescopic cylinders 3 are fixedly connected to the inner wall of the dust cover 2, and the output ends of the pair of telescopic cylinders 3 are fixedly connected to clamps 4.

[0042] A pair of telescopic cylinders 3 drive a pair of clamping plates 4 to move in opposite directions, which can clamp and fix the concrete components placed on the cutting table 1, keeping them stable.

[0043] The dust collection box 801 has a damp sponge pad 809 placed on its inner wall, and the front of the dust collection box 801 is open. A sealing plate 8010 is hinged to the front of the dust collection box 801.

[0044] The damp sponge pad 809 can be used to moisten the dust collected inside the dust collection box 801, making it less likely to be stirred up and splashed inside the dust collection box 801. After collection is completed, the sealing plate 8010 can be opened and the damp sponge pad 809 can be removed to clean the dust inside the damp sponge pad 809 and the dust collection box 801.

[0045] The deflection adjustment mechanism 9 includes a connecting plate 901 sleeved on the inclined tube 807. A connecting horizontal plate 902 is fixedly connected to the top of the connecting plate 901. A first electric telescopic rod 905 is provided on the top of the connecting horizontal plate 902. Both ends of the first electric telescopic rod 905 are fixedly connected to deflection movable blocks 904. Both sides of a pair of deflection movable blocks 904 are rotatably connected to arc-shaped pieces 903 through a rotating shaft and bearing. The sides of the two pairs of arc-shaped pieces 903 that are far apart are fixedly connected to the inner top of the dust cover 2 and the top of the connecting horizontal plate 902, respectively.

[0046] The first electric telescopic rod 905 is driven to extend and retract, causing the connecting horizontal plate 902 to move up or down via the deflection block 904 at the bottom. This causes the connecting horizontal plate 902 to drive the inclined tube 807 to deflect up and down with the assistance of the hose 806 via the connecting plate 901. The suction angle of the vacuum frame 808 is adjusted according to the usage requirements to enhance the suction effect.

[0047] The dust cover 2 has a slide cylinder 10 fixedly connected to its inner top end, and the output end of the slide cylinder 10 is fixedly connected to a top plate 11. A pair of second electric telescopic rods 12 are embedded in the top plate 11, and the bottom ends of the pair of second electric telescopic rods 12 are fixedly connected to the top ends of a pair of L-shaped plates 5 respectively.

[0048] By driving a pair of second electric telescopic rods 12, the motor 7 and the cutting blade 6 can be moved downwards, close to the concrete component, until the cutting blade 6 contacts the cutting position of the concrete component, and the cutting blade 6, driven by the sliding cylinder 10, performs cutting along the concrete component.

[0049] Among them, a pair of I-shaped rods 13 are fixedly connected to the inner top of the dust cover 2, and a movable sleeve block 14 is sleeved on the outer wall of the I-shaped rod 13. One side of the movable sleeve block 14 is fixedly connected to the outer wall of the second electric telescopic rod 12.

[0050] Driven by the slide cylinder 10, a pair of second electric telescopic rods 12 are driven to move in the front-back direction. At this time, a pair of moving sleeves 14 move synchronously along a pair of I-shaped rods 13 to assist the movement of the second electric telescopic rods 12 and keep them moving stably.

[0051] The dust cover 2 has an opening on its front side, and a pair of sealing doors 15 that are in contact with each other are hinged to the front side of the dust cover 2.

[0052] By using the dust cover 2 and the sealing door 15 to form a sealed space, some of the splashed dust that has not been collected is blocked, preventing it from scattering to various places around the cutting table 1, thus achieving sufficient blocking of splashed dust and enhancing the dust reduction effect.

[0053] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0054] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0055] The working principle of this utility model is as follows:

[0056] In use, this invention first opens a pair of sealing doors 15, places the concrete component on the cutting table 1, and drives a pair of telescopic cylinders 3 to move a pair of clamping plates 4 towards each other to clamp and fix it. After fixing, the sealing doors 15 are closed. Then, a pair of second electric telescopic rods 12 are driven to move the motor 7 and the cutting blade 6 downwards, close to the concrete component, until the cutting blade 6 contacts the cutting position of the concrete component. Immediately afterwards, the motor 7 drives the cutting blade 6 to rotate, and under the action of the sliding cylinder 10, it cuts along the concrete component. At the same time, the exhaust fan 802 is driven to extract the air from the dust collection box 801 and each pipe and discharge it to the outside, creating a negative pressure inside the dust collection box 801 and each pipe. Under the attraction of this negative pressure, the dust generated near the cutting blade 6 is drawn away with the air. The airflow is drawn into the dust collection frames 808 on both sides, then flows through the inclined tube 807, hose 806, and connecting bend 805 into the dust collection box 801. The dust is filtered and blocked by the dust filter 804, causing the dust to remain on the moist sponge pad 809 inside the dust collection box 801. This drives the first electric telescopic rod 905 to extend and retract, causing it to move the connecting horizontal plate 902 up or down via the bottom deflection block 904. This causes the connecting horizontal plate 902 to drive the inclined tube 807 to deflect up and down with the assistance of the hose 806, adjusting the suction angle of the dust collection frame 808 according to usage requirements. Some of the splashed dust that is not collected is blocked on the cutting table 1 within the sealed space formed by the dust cover 2 and the sealing door 15, effectively blocking the dust generated during cutting.

[0057] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A concrete cutting machine with dust reduction function, characterized in that, include: A cutting table (1) and a dust cover (2) are provided inside the dust cover (2). The top of the cutting table (1) is fixedly connected to the bottom of the dust cover (2). A pair of L-shaped plates (5) are provided inside the dust cover (2). A cutting blade (6) is rotatably connected between the opposite sides of the pair of L-shaped plates (5) through a bearing and a rotating shaft. A motor (7) is fixedly connected to the inner wall of the L-shaped plate (5) on one side. The output end of the motor (7) is fixedly connected to the rotating shaft on one side. A pair of dust collection mechanisms (8) are provided on one side of the cutting blade (6) and the dust collection mechanisms (8) are used to collect the dust generated during the cutting process of the cutting blade (6); A pair of deflection adjustment mechanisms (9) are provided at the bottom of the L-shaped plate (5), and the deflection adjustment mechanisms (9) are used to adjust the suction angle of the suction mechanism (8); The dust collection mechanism (8) includes a dust collection box (801) fixedly connected to the top of the L-shaped plate (5), an air extractor (802) fixedly connected to the top of the L-shaped plate (5), and an air extraction pipe (803) fixedly connected between the air extraction end of the air extractor (802) and one side of the dust collection box (801). A dust filter (804) is fixedly connected to the inner wall of the air extraction pipe (803). A connecting bend (805) is fixedly connected to the side of the dust collection box (801) away from the air extraction pipe (803). The bottom end of the connecting bend (805) passes through the top of the L-shaped plate (5) and is fixedly connected to a flexible hose (806). One end of the flexible hose (806) is fixedly connected to an inclined tube (807), and one end of the inclined tube (807) is fixedly connected to a dust collection frame (808).

2. A concrete cutting machine with dust reduction function according to claim 1, characterized in that, The inner wall of the dust cover (2) is fixedly connected to a pair of telescopic cylinders (3), and the output ends of the pair of telescopic cylinders (3) are fixedly connected to clamps (4).

3. A concrete cutting machine with dust reduction function according to claim 1, characterized in that, The inner wall of the dust collection box (801) is provided with a moist sponge pad (809). The front side of the dust collection box (801) is open, and a sealing plate (8010) is hinged to the front side of the dust collection box (801) via a hinge.

4. A concrete cutting machine with dust reduction function according to claim 1, characterized in that, The deflection adjustment mechanism (9) includes a connecting plate (901) sleeved on the inclined tube (807). A connecting horizontal plate (902) is fixedly connected to the top of the connecting plate (901). A first electric telescopic rod (905) is provided on the top of the connecting horizontal plate (902). Both ends of the first electric telescopic rod (905) are fixedly connected to deflection movable blocks (904). Both sides of a pair of deflection movable blocks (904) are rotatably connected to arc-shaped pieces (903) through a rotating shaft and bearing. The two pairs of arc-shaped pieces (903) are respectively fixedly connected to the inner top of the dust cover (2) and the top of the connecting horizontal plate (902) on opposite sides.

5. A concrete cutting machine with dust reduction function according to claim 1, characterized in that, The dust cover (2) is fixedly connected to a slide cylinder (10) at its inner top end, and the output end of the slide cylinder (10) is fixedly connected to a top plate (11). A pair of second electric telescopic rods (12) are embedded and connected on the top plate (11), and the bottom ends of the pair of second electric telescopic rods (12) are fixedly connected to the top ends of a pair of L-shaped plates (5).

6. A concrete cutting machine with dust reduction function according to claim 5, characterized in that, The dust cover (2) has a pair of I-shaped rods (13) fixedly connected to its inner top end, and the outer wall of the I-shaped rods (13) is fitted with a movable sleeve (14), one side of which is fixedly connected to the outer wall of the second electric telescopic rod (12).

7. A concrete cutting machine with dust reduction function according to claim 1, characterized in that, The front side of the dust cover (2) is open, and a pair of sealing doors (15) that are in contact with each other are hinged to the front side of the dust cover (2).

Citation Information

Patent Citations

  • Concrete cutting machine

    CN207156188U