Construction bush hammer

Abstract

A construction bush hammer comprises a moving device. An inner groove is formed in the front side of the moving device in a penetrating mode, and the scabbling device is installed in the inner groove; the dust collecting device is mounted on the front side of the scabbling device; the water mist dust suppression device is mounted on the inner side of the dust collection device; chippings are effectively prevented from splashing, and construction safety and neatness are guaranteed; the dust collection cover is matched with the scabbling box, so that the construction surface can be tightly covered, an approximately closed working space is formed, high-speed splashing sand and stone chips generated by scabbling are effectively restrained in the cover body, and the safety threat to operators and the surrounding environment is eliminated; source dust suppression and whole-process dust control are achieved, and wrapping and wetting can be conducted at the moment when dust is generated. The water mist effectively increases the weight of dust particles, so that the dust particles are rapidly settled, the dissipation of dust is obviously reduced from the source, the concentration of air dust in an operation area can be reduced by more than 80%, and the harm to the health of operators and the pollution to the environment are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, and in particular to a construction roughening machine. Background Technology

[0002] In the field of building construction, to ensure a strong bond between new and old concrete, or between concrete and plaster layers, tiles, or other finishing materials, it is usually necessary to roughen the existing concrete surface to remove laitance and create a rough surface. Roughening equipment is a key tool for achieving this process.

[0003] Existing construction surface roughening equipment, from manual hammers to mechanically powered electric or pneumatic roughening machines, largely focuses on high-frequency impact from the chisel needle to achieve demolition. However, long-term use of this equipment has revealed several common and pressing technical defects. The impact head (chisel needle) of traditional roughening equipment is usually directly exposed. Under high-speed impact, the broken concrete fragments and gravel fly haphazardly in all directions. This not only poses a threat to the personal safety of operators (potentially causing injury), but the flying debris also contaminates the surrounding completed construction surface, increasing cleanup workload and reducing overall construction efficiency and environmental cleanliness. Simultaneously, it leads to dust permeating the construction site, severely deteriorating the working environment, affecting the health of operators, and prolonged inhalation of cement dust may cause occupational diseases such as silicosis.

[0004] To address the above issues, we provide a construction roughening machine. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a construction roughening machine.

[0006] The objective of this invention is achieved as follows:

[0007] A construction surface roughening machine, including a moving device;

[0008] A chiseling device, wherein an inner groove is provided through the front side of the moving device, and the chiseling device is installed in the inner groove;

[0009] Dust collection device; a dust collection device is installed on the front side of the chiseling device.

[0010] A water mist dust suppression device is installed inside the dust collection device.

[0011] Furthermore, the mobile device includes a base plate, casters, and a handle. Casters are installed at the corners of the bottom surface of the base plate, and a handle is installed on the rear side of the top surface of the base plate.

[0012] Furthermore, the grip area of ​​the movable handle is provided with a cushioning device.

[0013] Furthermore, the buffer device includes an inner support ring and an outer ring sleeve. The inner support rings are all semi-circular tube structures. Several inner support rings are evenly spaced at the grip of the movable handle, and the outer ring sleeve covers the outer side of the inner support rings.

[0014] Furthermore, the chiseling device includes a chiseling box, a mounting frame, a cutter head assembly, a motor, and a telescopic push rod. The chiseling box is installed on the upper part of the inner groove. The chiseling box is a hollow box structure with an open bottom and front side. A pair of telescopic push rods are installed on the top surface of the inner cavity of the chiseling box. A mounting frame is provided at the bottom end of the telescopic push rods. The cutter head assembly is rotatably connected to the inner side of the mounting frame. The motor is installed on the outer side of the mounting frame. The output shaft of the motor extends to the inner side of the mounting frame and is fixedly connected to the cutter head assembly.

[0015] Furthermore, the cutter head assembly includes a cutter body, a first cutter head, a second cutter head, and a connecting shaft. A plurality of the connecting shafts are circumferentially distributed. A plurality of cutter bodies are equally spaced on the connecting shafts. A plurality of first cutter heads are equally spaced on the outer side of the cutter body. A second cutter head is disposed between each pair of adjacent first cutter heads.

[0016] Furthermore, the shaving device also includes a hydraulic rod, a rear connecting seat, a front connecting seat, and a linkage rod. The hydraulic rod is mounted on the top surface of the moving device, and the output end of the hydraulic rod is mounted on the rear connecting seat. A connecting hole is opened through the rear side wall of the shaving box. A front connecting seat is provided on the top of the mounting frame. A linkage rod is sleeved inside the front connecting seat. The middle part of the linkage rod is rotatably connected to the inside of the connecting hole, and the rear end of the linkage rod is sleeved inside the rear connecting seat.

[0017] Furthermore, barrier membranes are provided on both the front and rear sides of the connection hole.

[0018] Furthermore, the dust collection device includes a front frame, a dust collection hood, drive wheels, connecting rods, and slide rails. The dust collection hood is provided on the front side of the chiseling device. The dust collection hood is made of flexible material. The front frame is provided at the front end of the dust collection hood. Drive wheels are installed on both sides of the front frame. Connecting rods are provided on both sides of the front frame. Slide rails are vertically provided on both sides of the chiseling device. The slide rails are slidably connected to the rear end of the connecting rods.

[0019] Furthermore, the dust collection device also includes a dust collection box, a dust collection bag, a fan, and an inlet pipe. The dust collection box is installed on the top surface of the mobile device, and a dust collection bag is fitted inside the dust collection box. A fan is installed on the top surface of the dust collection box, and an inlet pipe is installed through one end of the dust collection box. The inner end of the inlet pipe extends into the inside of the dust collection bag. The inlet pipe is connected to the inner cavity of the dust collection hood through a pipe, and the fan is connected to the inner cavity of the dust collection box through a pipe.

[0020] Furthermore, the dust collection device also includes a rear air duct, and the rear air ducts are vertically installed on both sides of the inner cavity of the chiseling box. The rear air ducts are connected to the inlet pipe through a pipeline.

[0021] Furthermore, the water mist dust suppression component includes a water tank, a water pump, and a spray bar. The spray bar is installed on the front side of the inner cavity of the dust collection hood, the water tank is installed on the top surface of the mobile device, and the water pump is installed on the outside of the water tank. The water pump is connected to the water tank and the spray bar through pipes.

[0022] Furthermore, a construction roughening machine also includes a protective device installed on the bottom surface of the mobile device.

[0023] Furthermore, the protective device includes a main shield, a side shield, and traveling rollers. The main shield is installed on the bottom surface of the mobile device, and the side shield is slidably connected to the inner side of the main shield. Traveling rollers are installed on both sides of the side shield.

[0024] Furthermore, a construction roughening machine includes a turning device mounted on the bottom surface of the moving device.

[0025] Furthermore, there are two actuating devices, which are arranged in a figure-eight configuration.

[0026] Furthermore, the actuating device includes an actuating motor, a roller frame, a transmission shaft, a track, and actuating plates. Roller frames are respectively installed on both sides of the bottom surface of the moving device. Several transmission shafts are rotatably connected to the inner side of the roller frame. The outer side of the transmission shaft is covered by the track. Several actuating plates are equally spaced on the outer side of the track. An actuating motor is installed on the top surface of the roller frame. The output shaft of the actuating motor extends to the inner side of the roller frame and is fixedly connected to the outermost transmission shaft.

[0027] Advantages of this invention:

[0028] 1. The technical solution of this application effectively prevents debris from splashing, ensuring construction safety and cleanliness. The dust collection device, especially the dust collection hood and the chiseling box, can tightly cover the construction surface, forming a nearly enclosed working space, effectively confining the high-speed flying sand and gravel debris generated during chiseling within the hood, eliminating safety threats to operators and the surrounding environment.

[0029] 2. The technical solution of this application achieves source dust suppression and full-process dust control. Through the synergistic effect of the dust collection hood and water mist dust suppression device installed around the chiseling device, dust can be enveloped and moistened the instant it is generated. The water mist effectively increases the weight of dust particles, causing them to settle rapidly, significantly reducing dust dispersion at the source. The air dust concentration in the work area can be reduced by more than 80%, greatly improving the health hazards to operators and the environmental pollution. Attached Figure Description

[0030] Figure 1 A schematic diagram of a construction roughening machine. Figure 1 .

[0031] Figure 2 A schematic diagram of a construction roughening machine. Figure 2 .

[0032] Figure 3 This is a schematic diagram of a half-section structure of a construction scabbing machine.

[0033] Figure 4 This is a schematic diagram of the chiseling device and dust collection device.

[0034] In the diagram: 1. Moving device, 11. Base plate, 12. Casters, 13. Moving handle, 14. Buffer device, 141. Inner support ring, 142. Outer ring sleeve;

[0035] 2. Chipping device; 21. Chipping box; 22. Mounting bracket; 23. Cutter head assembly; 231. Cutter body; 232. First cutter head; 233. Second cutter head; 234. Connecting shaft; 24. Motor; 25. Telescopic push rod; 26. Hydraulic rod; 27. Rear end connecting seat; 28. Front end connecting seat; 29. ​​Linkage rod;

[0036] 3. Dust collection device; 31. Front frame; 32. Dust collection hood; 33. Drive wheel; 34. Connecting rod; 35. Slide rail; 36. Dust collection box; 37. Dust collection bag; 38. Fan; 39. Inlet pipe; 40. Rear air duct;

[0037] 5. Water mist dust suppression device; 51. Water storage tank; 52. Water pump; 53. Spray bar;

[0038] 6. Protective devices; 61. Main shield; 62. Side shield; 63. Traveling rollers;

[0039] 7. Actuating device; 71. Actuating motor; 72. Roller frame; 73. Drive shaft; 74. Track; 75. Actuating plate. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0041] This application provides a construction roughening machine.

[0042] Example 1, as Figure 1-4 As shown.

[0043] A construction surface roughening machine includes a moving device 1;

[0044] The mobile device 1 includes a base plate 11, casters 12, and a handle 13. Casters 12 are installed at the bottom corners of the base plate 11, and a handle 13 is installed on the rear side of the top surface of the base plate 11. In use, the construction worker can hold the handle 13 to push the roughening machine to move and perform roughening operations.

[0045] The grip of the movable handle 13 is equipped with a buffer device 14 to reduce the impact on the hands of construction workers during the roughening operation.

[0046] The buffer device 14 includes an inner support ring 141 and an outer ring sleeve 142. The inner support rings 141 are all semi-circular tube structures. Several inner support rings 141 are evenly spaced at the grip of the movable handle 13, and the outer ring sleeves 142 cover the outer side of each inner support ring 141. The vibration generated by chiseling can be effectively absorbed by the several inner support rings 141 and the outer ring sleeves 142.

[0047] A construction roughening machine includes a roughening device 2. The front side of the moving device 1 is provided with an inner groove, that is, the front side of the base plate 11 is provided with an inner groove. The roughening device 2 is installed in the inner groove, and the roughening operation is realized by the roughening device 2.

[0048] The chiseling device 2 includes a chiseling box 21, a mounting frame 22, a cutter head assembly 23, a motor 24, and telescopic push rods 25. The chiseling box 21 is mounted on the upper part of the inner groove. The chiseling box 21 is a hollow box structure with an open bottom and front side. A pair of telescopic push rods 25 are mounted on the top surface of the inner cavity of the chiseling box 21. The mounting frame 22 is provided at the bottom end of the telescopic push rods 25. The cutter head assembly 23 is rotatably connected to the inner side of the mounting frame 22, and the motor 24 is mounted on the outer side of the mounting frame 22. The output shaft of the motor 24 extends to the inner side of the mounting frame 22 and is fixedly connected to the cutter head assembly 23. The cutter head assembly 23 is located inside the chiseling box 21. During the chiseling process, it can largely intercept flying debris, protecting the safety of on-site construction personnel.

[0049] In use, the motor 24 drives the cutter head assembly 23 inside the mounting bracket 22 to rotate, thereby roughening the concrete surface.

[0050] The cutter head assembly 23 includes a cutter body 231, a first cutter head 232, a second cutter head 233, and connecting shafts 234. A plurality of connecting shafts 234 are circumferentially distributed. A plurality of cutter bodies 231 are evenly spaced on each connecting shaft 234, and a plurality of first cutter heads 232 are evenly spaced on the outer side of each cutter body 231. A second cutter head 233 is positioned between every pair of adjacent first cutter heads 232. During roughening, the first cutter heads 232 and second cutter heads 233 work together to roughen the concrete surface. The second cutter heads 233 are lower than the first cutter heads 232, creating a staggered height that increases roughening efficiency. Simultaneously, the second cutter heads 233 can also deflect the roughened stone to the sides of the cutter body 231, preventing it from getting stuck inside the cutter head assembly 23. The design of the plurality of connecting shafts 234 also helps to prevent stone fragments from flying off; the stone fragments knocked away by the cutter head are intercepted by the connecting shafts 234, thus reducing the amount of flying debris.

[0051] The chiseling device 2 also includes a hydraulic rod 26, a rear connecting seat 27, a front connecting seat 28, and a linkage rod 29. The hydraulic rod 26 is installed on the top surface of the moving device 1, that is, the hydraulic rod 26 is installed on the top surface of the base plate 11. The output end of the hydraulic rod 26 is installed with the rear connecting seat 27. A connecting hole is opened through the rear side wall of the chiseling box 21. The top of the mounting frame 22 is provided with the front connecting seat 28. The linkage rod 29 is sleeved inside the front connecting seat 28. The middle part of the linkage rod 29 is rotatably connected to the inner side of the connecting hole. The rear end of the linkage rod 29 is sleeved inside the rear connecting seat 27. During chiseling, the extension and retraction of the hydraulic rod 26 drives the lifting and lowering of the mounting frame 22 through the linkage rod 29, thereby realizing the lifting and lowering of the cutter head assembly 23, which can control the chiseling depth and chiseling force. The design of the lifting push rod is to limit the vertical movement trajectory of the mounting frame 22.

[0052] The connecting hole is equipped with a barrier membrane on both its front and rear sides to prevent gravel from splashing out of the connecting hole and reaching the rear. The barrier membrane is made of rubber and will not affect the linkage rod 29 when it swings.

[0053] A construction surface roughening machine includes a dust collection device 3, which is installed on the front side of the roughening device 2. This suppresses dust at the source of construction.

[0054] The dust collection device 3 includes a front frame 31, a dust collection hood 32, drive wheels 33, connecting rods 34, and slide rails 35. The dust collection hood 32, made of flexible material, is located at the front of the chiseling device 2. The front frame 31 is mounted on both sides of the front frame 31, and drive wheels 33 are mounted on both sides of the front frame 31. Connecting rods 34 are mounted on both sides of the front frame 31. Slide rails 35 are vertically mounted on both sides of the chiseling device 2, and the slide rails 35 are slidably connected to the rear ends of the connecting rods 34. The dust collection hood 32, being made of flexible material, is always positioned in front of the cutter head assembly 23 under the fixation of the front frame 31, completely covering the chiseling area. The front frame 31 can move via the drive wheels 33 and, under its own weight, remains in contact with the ground, thus preventing the work area from being exposed. The connecting rod 34 and the slide rail 35 are designed to allow the front frame 31 to move forward when the shaving machine moves, and to allow the front frame 31 to move up and down within a certain range when the ground is uneven.

[0055] The dust collection hood 32 works in conjunction with the chiseling box 21 to achieve near-sealing of the chiseling area from the source, thereby preventing gravel from flying to the outside and causing injury to construction workers.

[0056] The dust collection device 3 also includes a dust collection box 36, a dust collection bag 37, a fan 38, and an inlet pipe 39. The dust collection box 36 is installed on the top surface of the mobile device 1. The dust collection bag 37 is fitted inside the dust collection box 36. The fan 38 is installed on the top surface of the dust collection box 36. An inlet pipe 39 is installed through one end of the dust collection box 36. The inner end of the inlet pipe 39 extends into the interior of the dust collection bag 37. The inlet pipe 39 is connected to the inner cavity of the dust collection hood 32 through a pipe. The fan 38 is connected to the inner cavity of the dust collection box 36 through a pipe.

[0057] During the roughening process, the fan 38 is activated, drawing the flying gravel and dust within the covered area of ​​the dust collection hood 32 into the inlet pipe 39. The dust and gravel are then filtered into the dust collection bag 37, while the air is drawn out by the fan 38 to the outside of the dust collection box 36. This achieves the collection of gravel and dust. After use, the dust collection bag 37 is replaced. Each corner of the dust collection bag 37 is fixed to the corner of the inner cavity of the dust collection box 36.

[0058] The dust collection device 3 also includes a rear air duct 40. The rear air duct 40 is vertically installed on both sides of the inner cavity of the chisel box 21. The surface of the rear air duct 40 has several suction holes. The rear air duct 40 is connected to the inlet pipe 39 through a pipe. Similarly, the gravel and dust inside the chisel box 21 are sucked into the dust collection bag 37.

[0059] A construction roughening machine includes a water mist dust suppression device 5, which is installed inside the dust collection device 3. This achieves source dust suppression and full-process dust control. Through the synergistic effect of the dust collection hood 32 surrounding the roughening device 2 and the water mist dust suppression device 5, dust can be instantly enveloped and moistened upon generation. The water mist effectively increases the weight of dust particles, causing them to settle rapidly, significantly reducing dust dispersion at the source. The air dust concentration in the work area can be reduced by more than 80%, greatly mitigating the health hazards to operators and reducing environmental pollution.

[0060] The water mist dust suppression device 5 includes a water tank 51, a water pump 52, and a spray bar 53. The spray bar 53 is installed on the front side of the inner cavity of the dust collection hood 32, and the water tank 51 is installed on the top surface of the mobile device 1, i.e., the water tank 51 is installed on the top surface of the base plate 11. The water pump 52 is installed on the outside of the water tank 51, and the water pump 52 is connected to the water tank 51 and the spray bar 53 through pipes. The water pump 52 draws water from the water tank 51 and pumps it into the spray bar 53, and then sprays it out through the spray bar 53. The water mist combines with the dust, achieving rapid dust settling.

[0061] A construction roughening machine also includes a protective device 6, which is installed on the bottom surface of the mobile device 1.

[0062] The protective device 6 includes a main shield 61, side shields 62, and traveling rollers 63. The main shield 61 is installed on the bottom surface of the mobile device 1, that is, the main shield 61 is installed on the bottom surface of the base plate 11. The side shields 62 are slidably connected to the inner side of the main shield 61, and traveling rollers 63 are installed on both sides of the side shields. During the roughening process of the roughening machine, the traveling rollers 63 always roll in close contact with the ground. The main shield 61 and the side shields 62 can completely block the gap between the base plate 11 and the ground, preventing gravel from flying out from the gap and causing injury to the feet and legs of the construction workers.

[0063] A construction roughening machine includes a pushing device 7, which is mounted on the bottom surface of a moving device 1. The pushing device 7 pushes the gravel aside to both sides, reducing resistance during the movement of the roughening machine.

[0064] There are two actuating devices 7, which are arranged in a V-shape. They push the crushed stone away to both sides in the direction of movement of the chisel.

[0065] The actuating device 7 includes an actuating motor 71, a roller frame 72, a transmission shaft 73, a track 74, and actuating plates 75. The roller frame 72 is installed on both sides of the bottom surface of the moving device 1. Several transmission shafts 73 are rotatably connected to the inner side of the roller frame 72. The track 74 is covered on the outer side of the transmission shaft 73. Several actuating plates 75 are evenly spaced on the outer side of the track 74. The actuating motor 71 is installed on the top surface of the roller frame 72. The output shaft of the actuating motor 71 extends to the inner side of the roller frame 72 and is fixedly connected to the outermost transmission shaft 73.

[0066] When in use, the actuating motor 71 starts, driving the transmission shaft 73 to rotate, which in turn drives the actuating plate 75 to rotate through the outer covered track 74, pushing the gravel on the ground to both sides.

[0067] When using this invention:

[0068] Construction workers push the chiseling machine to the designated position, and then start the chiseling device, dust collection device, and water mist dust suppression device.

[0069] When the electric motor is started, it drives the cutter head assembly inside the mounting bracket to rotate, thereby roughening the concrete surface.

[0070] The extension of the hydraulic rod, through the linkage rod, drives the mounting bracket to descend, thereby pressing the cutter head assembly towards the ground for roughening. The extension length of the hydraulic rod is adjusted according to the roughening depth and force.

[0071] When the fan starts, it draws the flying gravel and dust within the covered area of ​​the dust collection hood into the inlet pipe through the pipeline. The dust and gravel are then drawn into the dust collection bag, where they are filtered out. The air is then drawn out of the dust collection box by the fan. This achieves the collection of gravel and dust. After use, the dust collection bag can be replaced. Similarly, the gravel and dust inside the chiseling box are also drawn into the dust collection bag.

[0072] The water pump starts, drawing water from the storage tank and pumping it into the spray bar, from which it is then sprayed out. The water mist combines with the dust, causing the dust to settle rapidly.

[0073] The starting motor drives the drive shaft to rotate, which in turn drives the toggle plate to rotate through the outer track, pushing the gravel on the ground to both sides.

[0074] It should be noted that, in this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0075] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims. It should be understood that this application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A construction roughening machine, characterized in that: Including mobile devices; A chiseling device, wherein an inner groove is provided through the front side of the moving device, and the chiseling device is installed in the inner groove; Dust collection device; a dust collection device is installed on the front side of the chiseling device. A water mist dust suppression device is installed inside the dust collection device.

2. The construction roughening machine according to claim 1, characterized in that: The mobile device includes a base plate, casters, and a handle. Casters are installed at the corners of the bottom surface of the base plate, and a handle is installed on the rear side of the top surface of the base plate.

3. A construction roughening machine according to claim 2, characterized in that: The grip area of ​​the movable handle is equipped with a cushioning device.

4. A construction roughening machine according to claim 3, characterized in that: The buffer device includes an inner support ring and an outer ring sleeve. The inner support rings are all semi-circular tube structures. Several inner support rings are evenly spaced at the grip of the movable handle. The outer ring sleeve covers the outer side of the inner support rings.

5. A construction roughening machine according to claim 1, characterized in that: The chiseling device includes a chiseling box, a mounting frame, a cutter head assembly, a motor, and a telescopic push rod. The chiseling box is installed on the upper part of the inner groove. The chiseling box is a hollow box structure with an open bottom and front side. A pair of telescopic push rods are installed on the top surface of the inner cavity of the chiseling box. The bottom end of the telescopic push rod is provided with a mounting frame. The cutter head assembly is rotatably connected to the inner side of the mounting frame. The motor is installed on the outer side of the mounting frame. The output shaft of the motor extends to the inner side of the mounting frame and is fixedly connected to the cutter head assembly.

6. A construction roughening machine according to claim 5, characterized in that: The cutter head assembly includes a cutter body, a first cutter head, a second cutter head, and a connecting shaft. A plurality of the connecting shafts are arranged in a circular pattern. A plurality of cutter bodies are arranged at equal intervals on the connecting shafts. A plurality of first cutter heads are arranged at equal intervals on the outer side of the cutter body. A second cutter head is arranged between each pair of adjacent first cutter heads.

7. A construction roughening machine according to claim 5, characterized in that: The shaving device also includes a hydraulic rod, a rear connecting seat, a front connecting seat, and a linkage rod. The hydraulic rod is mounted on the top surface of the moving device, and the output end of the hydraulic rod is mounted on the rear connecting seat. A connecting hole is opened through the rear side wall of the shaving box. The front connecting seat is provided on the top of the mounting frame. A linkage rod is sleeved inside the front connecting seat. The middle part of the linkage rod is rotatably connected to the inside of the connecting hole, and the rear end of the linkage rod is sleeved inside the rear connecting seat.

8. A construction roughening machine according to claim 7, characterized in that: Barrier membranes are provided on both the front and rear sides of the connection hole.

9. A construction roughening machine according to claim 1, characterized in that: The dust collection device includes a front frame, a dust collection hood, drive wheels, connecting rods, and slide rails. The dust collection hood is provided on the front side of the chiseling device. The dust collection hood is made of flexible material. The front frame is provided at the front end of the dust collection hood. Drive wheels are installed on both sides of the front frame. Connecting rods are provided on both sides of the front frame. Slide rails are vertically provided on both sides of the chiseling device. The slide rails are slidably connected to the rear end of the connecting rods.

10. A construction roughening machine according to claim 9, characterized in that: The dust collection device also includes a dust collection box, a dust collection bag, a fan, and an inlet pipe. The dust collection box is installed on the top surface of the mobile device. A dust collection bag is fitted inside the dust collection box. A fan is installed on the top surface of the dust collection box. An inlet pipe is installed through one end of the dust collection box. The inner end of the inlet pipe extends into the inside of the dust collection bag. The inlet pipe is connected to the inner cavity of the dust collection hood through a pipe. The fan is connected to the inner cavity of the dust collection box through a pipe.

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