Vertical wall cutting device and construction method
Through track cutting devices and spiral structure-driven diamond saw blade cutting, the problems of low cutting efficiency and poor safety of traditional walls are solved, efficient and accurate wall cutting is achieved, and the safety and cleanliness of the construction environment are improved.
Patent Information
- Application Number
- CN202510843261.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-08-05
AI Technical Summary
Traditional wall cutting methods are inefficient, poorly accurate, and have safety hazards, which affect construction progress and operator health.
The track-type cutting device, including tracks, fixtures and cutting components, is used to drive diamond saw blades to cut with a brushless motor, combining spiral structure and water spray cooling to ensure cutting accuracy and safety.
The wall cutting efficiency is improved by 30%-50%, ensuring that the flatness error of the cutting surface is ≤3mm, significantly improving the safety and cleanliness of the construction environment, and reducing later repair work.
Smart Images
Figure CN120425916A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of demolition and reconstruction of urban renewal construction projects, and particularly relates to a vertical wall cutting device and a construction method. Background Art
[0002] With the increasing number of urban renewal and building demolition and renovation projects, higher requirements are being placed on the efficiency, precision, safety, and environmental friendliness of wall cutting. Traditional wall cutting methods (such as manual angle grinders, handheld saws, and other tools) have significant drawbacks.
[0003] Traditional technologies rely on manual operation, resulting in slow cutting speeds and insufficient capacity for large-scale construction. Furthermore, manual operation is susceptible to human error, making it difficult to ensure the flatness and verticality of the cut surface, necessitating extensive subsequent repair work. Furthermore, the noise, dust, and flying debris generated during the cutting process pose a direct threat to the operator's hearing, respiratory system, and overall health. Handheld tools are also unstable and prone to operational errors.
[0004] Therefore, a new solution is urgently needed. Summary of the Invention
[0005] The object of the present invention is to provide a vertical wall cutting device, which not only improves the efficiency and accuracy of wall cutting, but also significantly improves the safety and cleanliness of the construction environment.
[0006] To achieve the above objectives, the present invention provides a vertical wall cutting device and construction method, including a track fixed to the surface of the wall, a fixing frame provided on the track, and a cutting assembly provided on the fixing frame.
[0007] Preferably, fixing holes are provided on the surface of the wall, and the track is connected to the wall through fixing hole bolts, with a bolt spacing of 300 mm. The fixing holes are evenly distributed along the length direction of the track, and a vertical rack is provided on the inner side of the track.
[0008] Preferably, the cutting assembly includes a first knob, which passes through the bottom of the fixing frame and extends to the back of the fixing frame to connect to the gear. The gear is fixed to the back of the fixing frame through a bearing, and the gear is vertically meshed with the track rack.
[0009] Preferably, a second knob is provided above the first knob, the second knob is fixed in the fixing frame, one end of the second knob is connected to the motor via a spiral screw, and the front end of the spiral screw is hinged to the motor housing.
[0010] Preferably, the motor is a brushless motor, the motor axis is horizontally facing the wall to be cut, and a vertical guide rail is provided at the bottom of the motor.
[0011] Preferably, the motor output shaft is fixedly connected to the saw blade via a flange, the saw blade is made of diamond, a water spray hole is provided on the left side of the saw blade, and the water spray hole is fixed on the fixing frame.
[0012] The present invention also provides a construction method of a vertical wall cutting device, comprising the following steps: S1. Identify the material and thickness of the wall to be demolished, use an ink fountain to draw lines on the surface of the wall to be demolished, mark the cutting range and track installation position, and plan the demolition sequence; S2. Drill holes in the wall using a drilling device according to the track positions marked in S1. Clean the dust in the holes, align the cutting assembly tracks with the drilled holes, insert expansion bolts in sequence, and tighten them to secure the tracks to the wall surface. S3. Assemble the fixing frame and cutting device components and install them on the track. Connect the water spray hose to the self-provided water source, aim the water spray direction at the saw blade cutting area, manually drive the up and down movement rotary device to test the sliding smoothness of the cutting assembly on the track, adjust the cutting depth rotary device, and check the saw blade cutting depth; S4. Turn on the motor to drive the saw blade to rotate, start the water spray assembly synchronously, and lower the cutting assembly at a constant speed by moving the rotating device up and down, cutting from the top to the bottom of the wall. According to the thickness of the wall, the saw blade's cutting depth is gradually increased by the deep and shallow rotating device; S5. Turn off the motor and water spray assembly, remove the cutting assembly and track, clean up the construction site, and collect cutting waste and wastewater.
[0013] Therefore, the present invention adopts the above-mentioned vertical wall cutting device and construction method. Compared with the prior art, the present invention has the following significant beneficial effects: (1) The present invention has a stable output power and a 30%-50% increase in cutting speed, and is particularly suitable for reinforced concrete and masonry walls with a thickness of ≤260mm. In addition, a protective cover is used to fully cover the outside of the saw blade to block stones, concrete fragments and cooling water flying during the cutting process, thereby reducing the risk of injury. (2) The rail-type sliding platform of the present invention provides a stable moving path, avoiding the shaking and pauses of manual operation, achieving continuous uniform cutting speed, and shortening the single-section wall cutting time by more than 40%. The saw blade cutting depth is controlled by the spiral structure, and the cutting speed can be dynamically adjusted according to the wall material, ensuring that the flatness error of the cutting surface is ≤3mm, without the need for post-grinding treatment; (3) The spiral propulsion rotary device of the present invention can achieve precise adjustment of the vertical movement speed and cutting depth of the cutting component. The operator can control the cutting rhythm by manually rotating at a constant speed, without the need to frequently adjust the posture or stop for calibration, thus reducing the loss of manual intervention. In addition, the track length can be adjusted to adapt to walls of different heights. (4) The present invention uses ink fountain marking to clearly define the cutting boundary and rail installation position, and combines the fixed rail spacing to ensure that the rail verticality deviation is ≤2mm / m, thus controlling the straightness and verticality of the cutting path from the source; (5) The present invention adopts a modular setting. The track, cutting components and control components are all detachable modules. The weight of a single set of devices is ≤50kg, which is convenient for transportation and on-site assembly. In addition, the manual spiral control device does not require professional technical training. The operator can control the cutting parameters by simply rotating it.
[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of a vertical wall cutting device according to the present invention; Figure 2 for Figure 1 Enlarged cross-sectional view at point A in the middle.
[0016] Reference numerals 1. Track; 2. Wall; 3. Cutting assembly; 301. Motor; 302. Saw blade; 303. First knob; 304. Second knob; 305. Protective cover; 306. Water spray hole; 307. Fixed bracket; 308. Gear; 4. Fixing hole; 5. Vertical rack. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.
[0018] Example 1 like Figure 1As shown, a vertical wall cutting device of the present invention includes a track 1, with preset bolt holes on the back of the track 1, which are aligned with the fixing holes 4 (diameter matching M16 bolts) on the wall 2. The track 1 is fixed to the surface of the existing reinforced concrete wall 2 by expansion bolts. The track 1 and the wall 2 are connected by M16 expansion bolts, with a bolt spacing of 300mm, which is evenly distributed along the length of the track 1. The track 1 is made of high-strength aluminum alloy material, and its length can be adjusted according to the height of the demolished wall 2. The width is 200mm. The track 1 adopts a lightweight design (40% lighter than steel tracks), which is convenient for on-site transportation and installation. The adjustable length of the track 1 can adapt to walls 2 of different heights (such as 2m, 3.5m, 5m), improving the versatility of the device.
[0019] Cutting assembly 3 is mounted on track 1 and connected to track 1 through meshing. A mounting bracket 307 is mounted on track 1 and is welded from high-strength steel. This rigid frame disperses cutting reaction forces, reduces vibration, and improves cutting stability. Cutting assembly 3 is mounted on mounting bracket 307.
[0020] like Figure 2 As shown, the cutting assembly 3 includes a first knob 303, which extends through the bottom of a mounting bracket 307 to the back of the bracket, where it is connected to a gear 308. Gear 308 is fixed to the back of the bracket 307 via a bearing and meshes with a vertical rack 5 on the inside of the track 1. When the operator rotates the first knob 303, the gear 308 engages the vertical rack 5, driving the bracket 307 to slide vertically along the track 1, achieving the up and down movement of the cutting assembly 3.
[0021] A second knob 304 is provided above the first knob 303, and the second knob 304 is fixed in the fixing frame 307. One end of the second knob 304 is connected to the motor 301 via a spiral screw, and the front end of the spiral screw is hinged to the housing of the motor 301. The motor 301 is a brushless motor, and the axis of the motor 301 is horizontally facing the wall 2 to be cut. A vertical guide rail is provided at the bottom of the motor 301. When the second knob 304 is rotated, the spiral screw drives the motor 301 to move up and down along the vertical guide rail, thereby adjusting the depth of the saw blade 302 cutting into the wall 2 (accuracy ±1mm). The spiral transmission adopts high precision, and the cutting depth of the saw blade 302 can be accurately controlled. The manual knob adjustment (each turn of the knob corresponds to a depth change of 2mm) is intuitive to operate and reduces personnel training costs.
[0022] The output shaft of motor 301 is fixedly connected to diamond saw blade 302 via a flange. A water jet hole 306 is located on the left side of saw blade 302 and secured to a mounting bracket 307 via a clamp. Water jet hole 306 is connected to a self-supplied water source (pumped via a suction pump) via a 10 mm diameter hose. Water is sprayed toward the contact point between saw blade 302 and wall 2, cooling the diamond saw blade 302 and ensuring it is protected from damage and degradation due to high temperatures during operation of cutting assembly 3.
[0023] A curved steel plate protective cover 305 is installed to the right of the saw blade 302 and is bolted to a mounting bracket 307. The bottom edge of the cover 305 is flush with the bottom of the saw blade 302, while the top edge extends 100mm beyond the top of the blade 302, creating a three-dimensional protective zone for the operator. The curved structure effectively reflects splashing objects (pebbles and water), while the protective area extends beyond the operator's field of vision, reducing the risk of injury. The impact-resistant steel plate ensures long-term wear and tear.
[0024] A construction method for a vertical wall cutting device comprises the following steps: S1. Identify the material and thickness of the wall 2 to be demolished. The maximum thickness of the wall 2 to be demolished is 260mm for reinforced concrete walls 2 and brick walls 2. Use professional measuring tools to measure the reinforced concrete wall 2 to be demolished and determine the cutting range. Use an ink fountain to draw lines on the surface of the wall 2 to mark the installation location of the track 1. Also, mark the starting and ending points of the cutting, ensuring that the line setting accuracy is within the allowable error range, providing an accurate basis for subsequent construction. S2. Drill fixing holes 4 in wall 2, using the track positions marked in S1. The hole diameter matches the M16 expansion bolts. Use high-strength aluminum alloy track 1. Adjust its length to the appropriate size based on the height of wall 2, with a width of 200mm and a pitch of 5mm for the inner vertical rack 5. Align the pre-set bolt holes on the back of track 1 with the fixing holes 4 in wall 2. Secure with M16 expansion bolts, keeping the bolt spacing at 300mm and evenly distributed along the length of the track. After installation, check the verticality and stability of the track to ensure it is securely fixed to the surface of wall 2. S3. Assemble the fixing frame 307 welded with high-strength steel and the other parts of the cutting assembly 3. Install it on the track 1, connect the water nozzle hose to the self-supplied water source, and align the water spray direction with the cutting area of the saw blade 302. After the assembly of the cutting assembly 3 is completed, debug it. Rotate the first knob 303 to check the engagement of the gear 308 with the rack of track 1 to ensure that the fixing frame 307 can slide smoothly vertically along the track 1. Rotate the second knob 304 to test the movement of the spiral screw drive motor 301 along the vertical guide rail, and verify the cutting depth adjustment function of the saw blade 302 with an adjustment accuracy of ±1mm. At the same time, check the water spray hole 306 to ensure that the water spray hole 306 sprays water normally and can effectively cool the saw blade 302. Check the operation of the brushless motor 301 to ensure that the motor 301 runs smoothly; S4. Start the motor 301. After the motor 301 reaches a stable speed, turn on the water spray assembly. The operator slowly rotates the first knob 303 to move the cutting assembly 3 vertically downward from the top of the wall 2 along the track 1. The initial cutting speed is set to 0.5m / min. During the cutting process, the depth of the saw blade 302 penetrating the wall 2 is gradually adjusted by rotating the second knob 304, depending on the material of the wall 2 and the cutting situation. Each adjustment is controlled within 1-2mm to ensure a stable cutting process and a smooth cut surface. During the cutting process, assign a dedicated person to monitor the construction process. Closely observe the operation of the cutting assembly 3, including the sound of the motor 301, the cutting status of the saw blade 302, the moving speed of the cutting device, etc., to ensure the normal operation of the equipment. At the same time, pay attention to the working status of the water nozzle to ensure that the saw blade 302 is fully cooled to avoid damage to the saw blade 302 or reduced cutting efficiency due to high temperature. Check the stability of the track 1 and the fixed frame 307. If there is any looseness or abnormality, stop construction immediately and deal with it; S5. After completing the cutting of wall 2, turn off brushless motor 301 and the water spray assembly. Remove cutting assembly 3 and clean dust, debris, and other debris from the surfaces of track 1 and wall 2. Inspect and maintain the components of cutting assembly 3, such as checking the wear of saw blade 302, cleaning water spray holes 306, and lubricating the transmission components, to prepare for the next use. Store the removed track 1 and cutting assembly 3 properly for future use.
[0025] Therefore, the present invention adopts the above-mentioned vertical wall cutting device and construction method, which not only improves the efficiency and accuracy of wall cutting, but also significantly improves the safety and cleanliness of the construction environment.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.
Claims
1. A vertical wall cutting device, characterized in that: The utility model comprises a track, wherein the track is fixed on the surface of the wall, a fixing frame is arranged on the track, and a cutting component is arranged on the fixing frame.
2. A vertical wall cutting device according to claim 1, characterized in that: The wall surface is provided with fixing holes, and the track is connected to the wall through fixing hole bolts, with a bolt spacing of 300 mm. The fixing holes are evenly distributed along the length direction of the track, and a vertical rack is provided on the inner side of the track.
3. A vertical wall cutting device according to claim 2, characterized in that: The cutting assembly includes a first knob, which passes through the bottom of the fixing frame and extends to the back of the fixing frame to connect with a gear. The gear is fixed to the back of the fixing frame through a bearing, and the gear is engaged with the vertical rack.
4. A vertical wall cutting device according to claim 3, characterized in that: A second knob is arranged above the first knob, and the second knob is fixed in the fixing frame. One end of the second knob is connected to the motor through a spiral screw, and the front end of the spiral screw is hinged to the motor housing.
5. A vertical wall cutting device according to claim 4, characterized in that: The motor is a brushless motor, the motor axis is horizontally oriented toward the wall to be cut, and a vertical guide rail is provided at the bottom of the motor.
6. A vertical wall cutting device according to claim 5, characterized in that: The motor output shaft is fixedly connected to the saw blade through a flange. The saw blade is made of diamond. A water spray hole is arranged on the left side of the saw blade, and the water spray hole is fixed on the fixing frame.
7. A vertical wall cutting device according to claim 6, characterized in that: An arc-shaped steel plate structure protective cover is provided on the right side of the saw blade. The protective cover is fixed to the fixing frame by bolts, and the lower edge of the protective cover is flush with the bottom of the saw blade.
8. A construction method of the vertical wall cutting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Identify the material and thickness of the wall to be demolished, use an ink fountain to draw lines on the surface of the wall to be demolished, mark the cutting range and track installation position, and plan the demolition sequence; S2. Drill holes in the wall using a drilling device according to the track positions marked in S1. Clean the dust in the holes, align the cutting assembly tracks with the drilled holes, insert expansion bolts in sequence, and tighten them to secure the tracks to the wall surface. S3. Assemble the fixing frame and cutting device components and install them on the track. Connect the water spray hose to the self-provided water source, aiming the water spray direction at the saw blade cutting area. Manually drive the up and down movement rotary device to test the sliding smoothness of the cutting assembly on the track. Adjust the cutting depth rotary device to check the saw blade's cutting depth. S4. Turn on the motor to drive the saw blade to rotate, start the water spray assembly synchronously, and lower the cutting assembly at a constant speed by moving the rotating device up and down, cutting from the top to the bottom of the wall. According to the thickness of the wall, the saw blade's cutting depth is gradually increased by the deep and shallow rotating device; S5. Turn off the motor and water spray assembly, remove the cutting assembly and track, clean up the construction site, and collect cutting waste and wastewater.