A device for the demolition of old windows with lossless preservation of the window and door openings

By designing old window removal equipment that preserves door and window openings without damage, and utilizing adjustment components and motor-driven milling cutter components, precise milling of window frames is achieved. This solves the problem of damage to the wall decoration layer during the replacement of old window frames, improves removal efficiency, and reduces costs.

CN117967091BActive Publication Date: 2026-05-19HUNAN HENGDI CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN HENGDI CONSTR ENG CO LTD
Filing Date
2024-01-31
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In existing technologies, the replacement of old window frames can easily damage the wall decoration layer, resulting in cumbersome, time-consuming, and costly repair work, and conventional demolition methods are inefficient.

Method used

Design an old window removal device that preserves door and window openings without damage, including components such as a first track, support rod, sliding support, milling cutter assembly and robotic arm. By adjusting the components and motor drive, precise milling of the window frame can be achieved, avoiding damage to the wall decoration layer.

Benefits of technology

It enables the non-destructive removal of window frames, reduces damage to the wall decoration layer, improves removal efficiency, reduces costs, and simplifies repair work.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of old window removal, and particularly relates to an old window removal equipment capable of preserving door and window openings without damage, which aims to solve the problems that the existing old window frame replacement process inevitably causes damage to the wall decoration layer, the wall decoration layer needs to be repaired after the replacement is completed, the entire window frame replacement process is time-consuming, low in efficiency and high in cost, and the like, and the following scheme is proposed, which comprises a first track used for adjusting the horizontal distance of a sliding rail, support rods used for adjusting the length and fixedly connected with a window are arranged at the two ends of the first track, a sliding support is arranged on the first track, a second track for sliding of a milling cutter assembly is fixedly arranged on the sliding support, the second track comprises a straight section and a curved section, the application can simultaneously remove multiple window edges of a window, can avoid damage to the decoration surface of the exposed part of the window, and significantly improves the old window removal efficiency.
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Description

Technical Field

[0001] This invention relates to the field of old window removal technology, and in particular to an old window removal device that preserves the door and window openings without damage. Background Technology

[0002] Door and window removal is widely used in energy conservation and old house renovation. However, conventional door and window removal methods usually involve violently damaging the windows, which can easily damage the original wall insulation structure and window decoration. On the one hand, this can lead to the risk of air leakage and rain leakage during subsequent door and window installation. On the other hand, it can cause trouble and inconvenience for families who need to replace windows, especially when wallpapering, tiling, or covering wooden windows. Violent window removal cannot meet the needs of customers.

[0003] The replacement of old window frames inevitably damages the wall decoration layer. After the replacement is completed, the wall decoration layer needs to be repaired again, which makes the entire window frame replacement process time-consuming, inefficient and costly. Summary of the Invention

[0004] This invention provides an old window removal device that preserves door and window openings without damage, solving the problems of existing technologies where replacing old window frames inevitably damages the wall decoration layer, requiring repair of the wall decoration layer after replacement, resulting in a time-consuming, inefficient, and costly window frame replacement process.

[0005] This invention provides the following technical solution:

[0006] A device for removing old windows without damaging door and window openings includes a first track for adjusting the horizontal distance of a sliding rail. Support rods for adjusting the length and fixed connection to the window are installed at both ends of the first track. A sliding support is installed on the first track. A second track for sliding a milling cutter assembly is fixedly installed on the sliding support. The second track includes a straight section and a curved section. A first rack is arranged along the second track. A sliding block is installed on the second track. A first motor is installed on the sliding block. The output shaft of the first motor passes through the sliding block and is fixedly connected to a first gear. The first gear meshes with the first rack. A cylinder is installed on the sliding block. The output shaft of the cylinder passes through the sliding block and is fixedly connected to a third track. A robotic arm is slidably installed on the third track. An adjusting disc driven by a second motor is installed at the end of the robotic arm. A milling cutter assembly is installed on the adjusting disc.

[0007] As a further improvement to the above solution, preferably, a toothed ring is fixed on the side of the adjusting disk, the toothed ring meshes with the second gear, the second gear is rotatably mounted on the robotic arm through a bearing seat, and the upper side of the second gear meshes with the second rack on the lower side of the third track.

[0008] Preferably, a threaded sleeve is fixed to the end of the output shaft of the cylinder, and a screw is connected to the threaded sleeve by a thread. The end of the screw is rotatably connected to the third track through a bearing chamber. A third gear is also fixed to the end of the screw. A third rack is fixed to one side of the upper part of the robotic arm, and a fourth rack is fixed to the other side. The third rack and the fourth rack are located on both sides of the third gear.

[0009] Preferably, an adjustment assembly is connected to one side of the sliding support. The adjustment assembly includes a horizontally arranged first adjustment rod, one end of which is fixedly connected to the sliding support and the other end of which is fixedly connected to the connecting seat. A vertically arranged second adjustment rod is fixedly attached to the lower side of the connecting seat, and the other end of which is fixedly connected to the top of the second track.

[0010] Preferably, limit frames are installed on both sides of the sliding block, and a limit rod is installed on the upper part of the third track, with the limit rod extending into the limit frames. It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0011] In this invention, the distance between the second track and the first track, as well as the height between the second track and the window frame, can be adjusted by the adjustment component, so that multiple demolition devices can be installed at the same window at the same time, so that the multiple demolition devices form a frame. The adjustment component avoids mutual interference between the multiple demolition devices, and the second track can be adjusted more conveniently after it is fixed.

[0012] The combination of the first and second tracks allows the demolition equipment to be used for windows of most sizes. By setting up straight and curved sections, the milling machine can complete milling operations on straight and corner sections.

[0013] The first motor drives the first gear to rotate, thereby driving the sliding block to slide along the second track.

[0014] The adjustment disk is driven to rotate by the second motor. When the adjustment disk rotates, it will drive the second gear to rotate. The rotation of the second gear will drive the robotic arm to slide. Therefore, when the milling cutter assembly adjusts the angle, it will simultaneously adjust the horizontal position of the robotic arm so that the end of the milling cutter is always at the center line position.

[0015] When the adjusting disc adjusts the angle of the milling cutter assembly, it drives the second gear to rotate. The rotation of the second gear drives the robotic arm to slide along the third track. When the robotic arm is in the middle, the milling cutter assembly on the adjusting disc is in a vertical state, and the third gear is located between the third rack and the fourth rack. After the adjusting disc rotates, the milling cutter assembly rotates to one side, and the third rack or the fourth rack meshes with the third gear. During the movement of the robotic arm, the third gear is driven to rotate, which causes the screw to rotate, while the threaded sleeve cannot rotate. Therefore, the connection length between the screw and the threaded sleeve changes, so that the end of the milling cutter assembly can always be kept in the center during the rotation of the milling cutter, and the height of the milling cutter assembly remains unchanged.

[0016] By installing multiple old window removal devices at the window, and adjusting their positions using the first and second adjusting rods, multiple second tracks are positioned on the same plane. By adjusting the sliding supports, the second tracks can be adapted to windows of different sizes. Each second track can complete the removal of a straight edge and a corner at the end. The old window removal devices can precisely mill off the subframe and some of the lower material without damaging other wall decoration layers of the window. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a combined demolition device for non-destructively preserving door and window openings provided in an embodiment of the present invention.

[0018] Figure 2 A three-dimensional structural diagram of an old window removal device that preserves door and window openings without damage, provided in an embodiment of the present invention;

[0019] Figure 3 This is a partially enlarged structural diagram of an old window removal device that preserves door and window openings without damage, provided in an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Support rod; 2. First track; 3. Second track; 4. Milling cutter assembly; 5. Adjusting disc; 6. Second gear; 7. Third track; 8. Limiting rod; 9. Sliding support; 10. First adjusting rod; 11. Connecting seat; 12. Second adjusting rod; 13. First rack; 14. Sliding block; 15. Threaded sleeve; 16. Third rack; 17. Third gear; 18. Fourth rack; 19. Second rack; 20. Robotic arm. Detailed Implementation

[0022] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0024] In this embodiment of the invention, 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. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0027] Example

[0028] Reference Figures 1-3A non-destructive window removal device for preserving door and window openings includes a first track 2 for adjusting the horizontal distance of a sliding rail. Support rods 1 for adjusting the length and fixed connection to the window are installed at both ends of the first track 2. A sliding support 9 is installed on the first track 2. An adjustment assembly is connected to one side of the sliding support 9. The adjustment assembly includes a horizontally arranged first adjustment rod 10, one end of which is fixedly connected to the sliding support 9, and the other end of which is fixedly connected to a connecting seat 11. A vertically arranged second adjustment rod 12 is fixed to the lower side of the connecting seat 11, and the other end of the second adjustment rod 12 is fixedly connected to the top of a second track 3. The adjustment assembly allows for adjustment of the distance between the second track 3 and the window opening. The distance between the first track 2 and the height of the second track 3 relative to the window frame allow multiple demolition devices to be installed simultaneously at the same window, forming a frame. An adjustment component prevents interference between the multiple demolition devices, and after fixing, the second track 3 can be adjusted more easily via the adjustment component. The sliding support 9 is fixedly equipped with the second track 3 for the milling cutter assembly 4 to slide on. The second track 3 includes a straight section and a curved section. The cooperation of the first track 2 and the second track 3 allows the demolition devices to be used with windows of most sizes. The straight and curved sections enable the milling cutter to perform milling operations on straight and corner sections. A first rack 13 is arranged along the track 3. A sliding block 14 is installed on the second track 3. A first motor is installed on the sliding block 14. The output shaft of the first motor passes through the sliding block 14 and is fixedly connected to a first gear. The first gear meshes with the first rack 13. The first motor drives the first gear to rotate, thereby driving the sliding block 14 to slide along the second track 3. Limit frames are installed on both sides of the sliding block 14. A cylinder is installed on the sliding block 14. The output shaft of the cylinder passes through the sliding block 14 and is fixedly connected to a third track 7. A limit rod 8 is installed on the upper part of the third track 7. The limit rod 8 extends into the limit frame. A robotic arm 20 is slidably mounted. An adjustment disk 5 driven by a second motor is mounted at the end of the robotic arm 20. A milling cutter assembly 4 is mounted on the adjustment disk 5. A toothed ring is fixed to the side of the adjustment disk 5. The toothed ring meshes with a second gear 6. The second gear 6 is rotatably mounted on the robotic arm 20 through a bearing seat. The upper side of the second gear 6 meshes with the second rack 19 on the lower side of the third track 7. The adjustment disk 5 is driven to rotate by the second motor. When the adjustment disk 5 rotates, it will drive the second gear 6 to rotate. The rotation of the second gear 6 will drive the robotic arm 20 to slide. Therefore, when the milling cutter assembly 4 adjusts the angle, it will simultaneously adjust the horizontal position of the robotic arm 20, so that the end of the milling cutter is always at the center line position.A threaded sleeve 15 is fixed to the end of the output shaft of the cylinder. A screw is threadedly connected to the threaded sleeve 15. The end of the screw is rotatably connected to the third track 7 through a bearing chamber. A third gear 17 is also fixed to the end of the screw. A third rack 16 is fixed to one side of the upper part of the robotic arm 20, and a fourth rack 18 is fixed to the other side. The third rack 16 and the fourth rack 18 are located on both sides of the third gear 17. When the adjusting disc 5 adjusts the angle of the milling cutter assembly 4, it will drive the second gear 6 to rotate. The rotation of the second gear 6 will drive the robotic arm 20 to slide along the third track 7. When the robotic arm 20 is in the middle... At this time, the milling cutter assembly 4 on the adjusting disk 5 is in a vertical state, and the third gear 17 is located between the third rack 16 and the fourth rack 18. After the adjusting disk 5 rotates, the milling cutter assembly 4 rotates to one side by an angle, and the third rack 16 or the fourth rack 18 meshes with the third gear 17. During the movement of the robotic arm 20, the third gear 17 is driven to rotate, thereby causing the screw to rotate, while the threaded sleeve 15 cannot rotate. Therefore, the connection length between the screw and the threaded sleeve 15 changes, so that the end of the milling cutter assembly 4 can always be kept at the center during the rotation of the milling cutter, and the height of the milling cutter assembly 4 remains unchanged.

[0029] By setting up multiple old window removal devices at the window, and adjusting their positions using the first adjusting rod 10 and the second adjusting rod 12, multiple second tracks 3 are positioned on the same plane. By adjusting the sliding support 9, the second tracks 3 can be adapted to windows of different sizes. Each second track 3 can complete the removal of a straight edge and a corner at the end.

[0030] During the demolition process, the first track 2 is first fixed at the window, making it parallel to one side of the window. The position of the second track 3 is finely adjusted by adjusting the first adjusting rod 10 and the second adjusting rod 12. The angle of the milling cutter assembly 4 is adjusted by rotating the adjusting disk 5. After the milling cutter assembly 4 rotates, it drives the second gear 6 to rotate. The rotation of the second gear 6 drives the robotic arm 20 to move, so that the end of the milling cutter assembly 4 is always on the center line of the milling path. The movement of the robotic arm 20 drives the third gear 17 to rotate, thereby adjusting the height of the milling cutter assembly 4. This ensures that the height of the milling cutter assembly 4 remains consistent during angle adjustment and rotation from one side to the other. One old window demolition device can completely mill a path. After milling, the milled waste can be directly removed. The old window demolition device can accurately mill off the subframe and some materials at the bottom without damaging other wall decoration layers of the window.

[0031] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for removing old windows while preserving door and window openings without damage, characterized in that, The system includes a first track (2) for adjusting the horizontal distance of the slide rails. Support rods (1) for adjusting the length and fixed connection to the window are installed at both ends of the first track (2). A sliding support (9) is installed on the first track (2). A second track (3) for sliding the milling cutter assembly (4) is fixedly installed on the sliding support (9). The second track (3) includes a straight section and a curved section. A first rack (13) is arranged along the track on the second track (3). A sliding block (14) is installed on the second track (3). A first motor is installed on the sliding block (14). The output shaft of the first motor passes through the sliding block (14) and is fixedly connected to a first gear. The first gear meshes with the first rack (13). A cylinder is installed on the sliding block (14). The output shaft of the cylinder passes through the sliding block (14) and is fixedly connected to a third track (7). A sliding cylinder is installed on the third track (7). There is a robotic arm (20), and an adjustment disk (5) driven by a second motor is installed at the end of the robotic arm (20). A milling cutter assembly (4) is installed on the adjustment disk (5). A toothed ring is fixed on the side of the adjustment disk (5). The toothed ring meshes with a second gear (6). The second gear (6) is rotatably mounted on the robotic arm (20) through a bearing seat. The upper side of the second gear (6) meshes with the second rack (19) on the lower side of the third track (7). A threaded sleeve (15) is fixed at the end of the output shaft of the cylinder. A screw is connected to the threaded sleeve (15) through a thread. The end of the screw is rotatably connected to the third track (7) through a bearing chamber. A third gear (17) is also fixed at the end of the screw. A third rack (16) is fixed on one side of the upper part of the robotic arm (20), and a fourth rack (18) is fixed on the other side. The third rack (16) and the fourth rack (18) are located on both sides of the third gear (17).

2. The old window removal equipment for non-destructively preserving door and window openings according to claim 1, characterized in that, An adjustment assembly is connected to one side of the sliding support (9). The adjustment assembly includes a horizontally arranged first adjustment rod (10). One end of the first adjustment rod (10) is fixedly connected to the sliding support (9), and the other end is fixedly connected to the connecting seat (11). A vertically arranged second adjustment rod (12) is fixed to the lower side of the connecting seat (11), and the other end of the second adjustment rod (12) is fixedly connected to the top of the second track (3).

3. The old window removal equipment for non-destructive preservation of door and window openings according to claim 1, characterized in that, Limiting frames are installed on both sides of the sliding block (14), and a limiting rod (8) is installed on the upper part of the third track (7), with the limiting rod (8) extending into the limiting frame.