A demolition device for application to a building

Abstract

This application discloses a demolition device for buildings, belonging to the technical field of building demolition devices. It mainly includes a mounting base with a multi-directional angle adjustment mechanism installed on it. A U-shaped mounting groove is fixedly mounted on the multi-directional angle adjustment mechanism, and a pneumatic hammer mechanism is installed in the middle of the inner side of the U-shaped mounting groove. Two fixed baffles are symmetrically fixedly connected to the U-shaped mounting groove. This application, through the design of the pneumatic hammer mechanism, demolition shear mechanism, and switching mechanism, facilitates rapid switching between demolition shears and a pneumatic hammer, significantly improving construction efficiency and reducing work interruptions compared to traditional disassembly and attachment replacement methods. The multi-directional angle adjustment mechanism allows for flexible adjustment of the demolition tool's tilt angle and disassembly direction as needed, flexibly adapting to complex demolition scenarios such as building corners, irregularly shaped components, high-altitude inclined structures, and wall gaps, reducing operational difficulty and improving demolition accuracy.

Description

Technical Field

[0001] This application relates to the field of building demolition device technology, specifically a demolition device applied to buildings. Background Technology

[0002] In building demolition operations, demolition shears and pneumatic hammers are two commonly used core operating equipment. Demolition shears are mainly used to cut rigid components such as reinforced concrete components, steel structure frames, and metal frames of doors and windows, achieving separation and dismantling of components through shearing force. Pneumatic hammers are mainly used to hammer and break brick and concrete walls, concrete blocks, decorative layers, etc., achieving rapid breaking of structures through high-frequency impact force. The two working together can complete the demolition tasks of most building structures and are widely used in the demolition of low-rise and mid-rise buildings as well as in fine interior demolition scenarios.

[0003] Existing demolition shears and pneumatic hammers are mostly two independent devices, requiring separate transport and installation onto the work platform (such as excavators, demolition robots, and aerial work platforms). This significantly increases the costs of equipment procurement, transportation, and subsequent maintenance, and also occupies a large amount of construction space. Especially in demolition operations in confined spaces such as basements, corridors, and pipe shafts, the storage and alternating handling of multiple devices is extremely inconvenient, severely impacting operational efficiency. Furthermore, existing demolition shears are mostly designed with a fixed angle, meaning their cutting direction cannot be flexibly adjusted according to the work scenario; they can only cut along a fixed direction. In actual demolition operations, it is common to encounter building corners, irregularly shaped concrete components, high-altitude inclined structures, and wall joints. In complex work locations such as gaps, operators need to frequently adjust the overall position of the equipment or their own working posture, which not only significantly increases the difficulty and labor intensity of operation, but also easily leads to damage to non-target structures due to angular deviations, thereby increasing the rework cost of demolition operations. At the same time, frequent adjustments to the equipment position during high-altitude operations also increase the safety hazards of operators falling and being crushed. Furthermore, in existing demolition operations, the alternation of demolition shears and pneumatic hammers is extremely frequent (e.g., first using a pneumatic hammer to break the surface of the wall, then using demolition shears to cut the internal steel bars, and then continuing to use a pneumatic hammer to break the remaining concrete). The alternation of independent equipment or the switching of separate attachments will lead to frequent work interruptions and significantly reduce construction efficiency.

[0004] Therefore, it is necessary to provide a demolition device for buildings to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a demolition device for buildings. Through the setting of a pneumatic hammer mechanism, a demolition shear mechanism, and a switching mechanism, the demolition tools can be quickly switched between demolition shears and pneumatic hammers. Compared with the traditional dismantling and changing of attachments, the construction efficiency is greatly improved and the work interruption is reduced. Through the setting of a multi-directional angle adjustment mechanism, the tilt angle and demolition direction of the demolition tools can be freely and flexibly adjusted as needed. It can flexibly adapt to complex demolition scenarios such as building corners, irregular components, high-altitude inclined structures, and wall gaps, reduce the difficulty of operation, and improve the demolition accuracy.

[0007] The technical solution adopted by this application to solve its technical problem is: a demolition device for buildings, including a mounting base, on which a multi-directional angle adjustment mechanism is installed, and a U-shaped mounting groove is fixedly installed on the multi-directional angle adjustment mechanism. A pneumatic hammer mechanism is installed in the middle of the inner side of the U-shaped mounting groove. Two fixed baffles are symmetrically fixedly connected to the U-shaped mounting groove. A demolition shear mechanism is installed at one end of each fixed baffle. A switching mechanism is installed between the demolition shear mechanism and the pneumatic hammer mechanism. The switching mechanism includes a fixed support plate fixedly connected to one end of the inner side of the U-shaped mounting groove. A fixed block is fixedly connected to the middle of the fixed support plate. Two sliding blocks are symmetrically distributed at both ends of the fixed block. The block has a slider that is slidably connected to a fixed support plate. A turbine is rotatably connected to the slider in the direction near the fixed block. A first worm gear meshes with the turbine in the direction near the fixed support plate. A drive guide shaft passes through the middle of the first worm gear. A second motor is fixed to one end of the drive guide shaft. Two support pads are symmetrically distributed on the second motor. The two support pads are fixedly connected to the fixed support plate. Fixed rods pass through the ends of the fixed blocks away from the fixed support plate on both sides. The two ends of the fixed rods are fixedly connected to U-shaped mounting grooves. The first worm gear drives the removal shear mechanism to rotate through the turbine, causing folding and exposing the pneumatic hammer mechanism, realizing rapid switching and locking between the two.

[0008] Furthermore, the dismantling shear mechanism includes two shear plates symmetrically distributed in the middle of one end of the fixed block. One end of the shear plate is rotatably connected to two sliders symmetrically distributed in one end of the fixed support plate. The middle of one end of the turbine is fixedly connected to the shear plate via a shaft. A hydraulic telescopic rod is installed and fixed at the end of the slider away from the shear plate. One end of the hydraulic telescopic rod is connected through the end of the fixed block away from the fixed rod.

[0009] Furthermore, the hydraulic telescopic rod extends and retracts, causing the slider to slide along the fixed support plate to one end under the guidance of the fixed rod and the drive guide shaft. This causes the shear plates connected to the two sliders to slide inward and outward, thereby adjusting the distance between the two shear plates. A shearing groove is provided on the opposite side of the shear plates. A foldable rubber strip is fixed to one end of the slider. One end of the foldable rubber strip is fixedly connected to the U-shaped mounting groove. The foldable rubber strip is slidably connected to the fixed support plate.

[0010] Furthermore, the pneumatic hammer mechanism includes a cylinder that passes through the middle of the fixed support plate. One end of the cylinder is fixedly connected to the middle of the fixed support plate. A pneumatic hammer rod is slidably connected to the middle of the inner side of the cylinder. One end of the pneumatic hammer rod is connected through the middle of the fixed block. An auxiliary spring is sleeved at the middle of the pneumatic hammer rod located inside the cylinder. A shock-absorbing rubber pad is filled and fixed below the fixed support plate. One end of the cylinder is fixedly connected to the middle of the shock-absorbing rubber pad near the fixed support plate.

[0011] Furthermore, four strip-shaped grooves are equidistantly provided on the drive guide shaft along the circumferential direction, and four rectangular locking blocks that match the strip-shaped grooves are fixedly connected equidistantly on the cavity wall of the first worm along the circumferential direction. The second motor drives the corresponding first worm to rotate through the strip-shaped grooves provided on the drive guide shaft and the rectangular locking blocks that are slidably connected in the strip-shaped grooves.

[0012] Furthermore, a fixing rod is fixedly connected to the middle of the other end of the U-shaped mounting groove. A U-shaped connecting pad is rotatably connected to one end of the fixing rod, and a positioning column seat is rotatably connected to one end of the U-shaped connecting pad. A first gear disk is provided at the connection position between the fixing rod and the U-shaped connecting pad. The first gear disk is located in the U-shaped dustproof cavities opened at both ends of the U-shaped connecting pad. The middle of the first gear disk is fixedly connected to one end of the fixing rod through a shaft. A first adjusting shaft is fixedly connected to the middle of one end of the U-shaped connecting pad. A second adjusting shaft passes through the middle of the first adjusting shaft. Protective sealing plates are fixedly installed at both ends of the U-shaped connecting pad by bolts.

[0013] Furthermore, a first drive gear rod is connected through the middle of the U-shaped connecting pad away from the fixed rod. The two ends of the first drive gear rod are respectively meshed with the corresponding first gear disk. The shape of the first drive gear rod in plan view is I-shaped. A conical gear disk is fixed on the second adjusting shaft near the fixed rod. A first conical gear that meshes with the conical gear disk is fixed on the shaft fixedly connected between the first drive gear rods. A second turbine is fixedly connected to both the first adjusting shaft away from the U-shaped connecting pad and the second adjusting shaft away from the conical gear disk. A second worm gear meshes with one side of the second turbine. A rectangular mounting cavity frame is fixed to one end of the positioning column seat. The second turbine and the second worm gear are both located inside the rectangular mounting cavity frame. The two ends of the second worm gear are respectively rotatably connected to the two ends inside the rectangular mounting cavity frame. A protective plate is provided outside the first conical gear. The protective plate is detachably connected to the U-shaped connecting pad by bolts.

[0014] Furthermore, a rectangular mounting cavity is provided at one end of the rectangular mounting frame, and one end of the second worm gear is connected through the rectangular mounting cavity. A first motor is fixed at one end of the second worm gear, and the first motor is installed inside the rectangular mounting cavity. A sealing plate is fixed at one end of the rectangular mounting cavity by bolts.

[0015] Furthermore, one end of the rectangular mounting cavity is snapped with a mounting base, and a mating ring plate is fixed to the rectangular mounting cavity near the positioning column base. Multiple snap-fit ​​tenons are fixedly connected at equal intervals on three sides of the outer surface of the rectangular mounting cavity. A clamping cavity is opened inside the mounting base, and multiple snap-fit ​​tenon grooves matching the size of the snap-fit ​​tenons are opened at equal intervals on the inner wall of the clamping cavity. Multiple bolt rods fixedly connected to the mounting base are distributed at equal intervals on the contact surface between the mounting base and the mating ring plate. A sealing nut is threaded onto one end of the bolt rod that passes through the mating ring plate.

[0016] The beneficial effects of this application are: it facilitates the rapid switching between demolition shears and pneumatic hammers, significantly improving construction efficiency and reducing work interruptions compared to traditional disassembly and attachment replacement; it allows for flexible adjustment of the tilt angle and disassembly direction of the demolition tools as needed; it can flexibly adapt to complex demolition scenarios such as building corners, irregularly shaped components, high-altitude inclined structures, and wall gaps, reducing operational difficulty and improving demolition accuracy.

[0017] 1. The demolition device for buildings provided in this application comprises a pneumatic hammer mechanism, a demolition shear mechanism, and a switching mechanism. Initially, the device is in the demolition shear state, where the shear cuts and demolishes the building components to be demolished. Two second motors drive two corresponding drive guide shafts to rotate synchronously. These rotating drive guide shafts, through four strip-shaped grooves and four rectangular blocks, drive four corresponding slidingly connected first worm gears to rotate synchronously. When the drive guide shafts drive the two first worm gears to rotate, the rotating first worm gears drive the corresponding meshing turbines to generate relative rotation. The rotation of the two turbines, which generate relative rotation, drives the two shear plates fixed in the middle of the shaft to rotate relative to each other around the corresponding slider via the centrally fixed shaft. When the two shear plates rotate 90 degrees synchronously, causing one end of each shear plate to engage in the preset limit slot inside the U-shaped mounting groove, the top of the pneumatic hammer rod in the pneumatic hammer mechanism located in the middle of the fixed block will be exposed, thus completing the quick switching of dismantling tools. At this time, the pneumatic hammer mechanism will dismantle the building component to be demolished. This facilitates the quick switching of dismantling tools between the shears and the pneumatic hammer, greatly improving construction efficiency and reducing work interruptions compared to traditional dismantling and attachment replacement.

[0018] 2. The demolition device for buildings provided in this application utilizes a multi-directional angle adjustment mechanism. A corresponding first motor drives a second worm gear to rotate. The rotating second worm gear, through a meshing worm, drives a corresponding fixedly connected first adjusting shaft to rotate. The rotating first adjusting shaft drives a U-shaped connecting pad fixed at one end to rotate under the support of a positioning column seat. The rotating U-shaped connecting pad drives a fixed rod at one end, a U-shaped mounting groove fixed on the fixed rod, and a pneumatic hammer mechanism mounted on the U-shaped mounting groove, which can rotate synchronously with the demolition shear mechanism from 0 to 360 degrees to adjust the orientation of the demolition tool. Then, the corresponding first motor drives the second worm gear to rotate. The rotating second worm gear, through a meshing worm, drives a corresponding fixedly connected second adjusting shaft to rotate. The rotating second adjusting shaft drives a U-shaped connecting pad fixed at one end to rotate under the support of a positioning column seat. A fixed conical gear disk drives a first conical gear meshing with it to rotate. The rotating first conical gear drives a first drive gear rod fixed in the middle to rotate. The rotating first drive gear rod drives a first gear disk meshing at both ends to rotate. The two rotating first gear disks drive a fixed rod fixedly connected between them to rotate from 0 degrees to 180 degrees. When the fixed rod adjusts its pitch angle, it drives the U-shaped mounting groove fixed on the fixed rod, the fixed baffle symmetrically fixed on the U-shaped mounting groove, and the pneumatic hammer mechanism installed in the U-shaped mounting groove to adjust their pitch angles synchronously with the demolition shear mechanism. This allows for flexible adjustment of the tilt angle and dismantling direction of the demolition tools as needed, and can flexibly adapt to complex demolition scenarios such as building corners, irregularly shaped components, high-altitude inclined structures, and wall gaps, reducing the difficulty of operation and improving demolition accuracy.

[0019] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure; Figure 2 This is a schematic diagram of the overall first cross-sectional three-dimensional structure. Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 A three-dimensional structural diagram showing the connection between the U-shaped mounting groove and the mounting base; Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle; Figure 6 A three-dimensional structural diagram showing the connection between the fixed rod and the first adjusting shaft; Figure 7 A three-dimensional structural diagram showing the connection between the first drive gear rod and the second adjusting shaft rod; Figure 8 A three-dimensional structural diagram showing the connection between the U-shaped connecting pad and the second worm gear; Figure 9 A three-dimensional structural diagram showing the connection between the shear plate and the first worm gear; Figure 10 This is a schematic diagram of the overall second cross-sectional three-dimensional structure; Figure 11 for Figure 10 Enlarged structural diagram of section C; Figure 12 This is a three-dimensional structural diagram showing the disassembly of the mounting base and the positioning column base.

[0021] The following are the labeling elements in the figure: 1. Mounting base; 2. Positioning column base; 3. Connecting ring plate; 4. U-shaped connecting pad; 5. Protective sealing plate; 6. Protective clamping plate; 7. Fixing rod; 8. U-shaped mounting groove; 9. Fixing baffle; 10. Shear plate; 11. First adjusting shaft; 12. Second adjusting shaft; 13. First drive gear rod; 14. First bevel gear; 15. Fixing bracket plate; 16. Fixing block; 17. Hydraulic telescopic rod; 18. First worm gear; 19. Sliding block; 20. 21. Fixed rod; 22. Sealing plate; 23. Turbine; 24. Cylinder; 25. First gear disc; 26. First motor; 27. Second worm gear; 28. Foldable rubber belt; 29. ​​Second motor; 30. Drive guide shaft; 31. Strip groove; 32. Rectangular mounting cavity frame; 33. Shock-absorbing rubber filling pad; 34. Pneumatic hammer rod; 35. Auxiliary spring; 36. Clamp cavity; 37. Snap-fit ​​tenon groove; 38. Bolt rod; 39. Snap-fit ​​tenon. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] like Figure 1-12As shown, this application provides a demolition device for buildings, including a mounting base 1. A multi-directional angle adjustment mechanism is mounted on the mounting base 1. A U-shaped mounting groove 8 is fixedly mounted on the multi-directional angle adjustment mechanism. A pneumatic hammer mechanism is mounted in the middle of the inner side of the U-shaped mounting groove 8. Two fixed baffles 9 are symmetrically fixedly connected to the U-shaped mounting groove 8. A demolition shear mechanism is mounted at one end of the fixed baffles 9. A switching mechanism is installed between the demolition shear mechanism and the pneumatic hammer mechanism. The switching mechanism includes a fixed support plate 15 fixedly connected to one end of the inner side of the U-shaped mounting groove 8. A fixed block 16 is fixedly connected to the middle of the fixed support plate 15. Two sliders 19 are symmetrically distributed at both ends of the fixed block 16. The sliders 19 are slidably connected to the fixed support plate 15. A turbine 22 is rotatably connected to the sliders 19 in the direction close to the fixed block 16. A first worm gear 18 is engaged with the turbine 22 in the direction close to the fixed support plate 15. The middle of the first worm gear 18 passes through... A drive guide shaft 29 is inserted, and a second motor 28 is fixed to one end of the drive guide shaft 29. Two support pads are symmetrically distributed on the second motor 28. The two support pads are fixedly connected to the fixed bracket plate 15. Fixed rods 20 pass through the ends of the fixed blocks 16 away from the fixed bracket plate 15. The two ends of the fixed rods 20 are fixedly connected to the U-shaped mounting grooves 8. The first worm gear 18 drives the removal shear mechanism to rotate through the turbine 22, which causes folding to expose the pneumatic hammer mechanism, realizing the rapid switching and locking of the two. Four strip-shaped grooves 30 are equally spaced along the circumferential direction on the drive guide shaft 29. Four rectangular locking blocks that match the strip-shaped grooves 30 are fixedly connected along the circumferential direction on the inner wall of the first worm gear 18. The second motor 28 drives the corresponding first worm gear 18 to rotate through the strip-shaped grooves 30 on the drive guide shaft 29 and the rectangular locking blocks that slide within the strip-shaped grooves 30.

[0025] In this embodiment, initially, the demolition shear mechanism is in a position slidably connected to the U-shaped mounting groove 8 and the fixed baffle 9. The two shear plates 10 are slidably connected to the top of the fixed block 16, and one end of each shear plate 10 is tightly fitted to the side wall of the fixed baffle 9, forming a closed state. This completely encloses the pneumatic hammer mechanism within the cavity formed by the U-shaped mounting groove 8, the fixed block 16, and the fixed baffle 9, effectively protecting the pneumatic hammer mechanism from damage caused by dust and gravel during demolition operations, thus extending its service life. When it is necessary to switch to the pneumatic hammer mechanism, the PLC controller issues a control command to simultaneously start the two second motors 28. The two second motors 28 drive the corresponding fixed connections at their output ends. Two drive guide shafts 29 rotate synchronously. The rotating drive guide shafts 29, through four strip-shaped grooves 30 on their outer surfaces and four rectangular blocks that slidably engage with these grooves, drive the four corresponding slidingly connected first worm gears 18 on the two drive guide shafts 29 to rotate synchronously. Since the spiral patterns of the two slidingly connected first worm gears 18 on the same drive guide shaft 29 are opposite—one counterclockwise and the other clockwise—when the drive guide shaft 29 drives the two first worm gears 18 to rotate, the rotating first worm gears 18 drive the corresponding meshing turbines 22 to rotate relative to each other. The two turbines 22 rotating relative to each other are connected by a centrally fixed shaft. The two shear plates 10, which are fixedly connected to the middle of the shaft, rotate relative to each other around the corresponding slider 19. When the two shear plates 10 rotate 90 degrees synchronously, one end of each shear plate 10 is engaged in the preset limiting slot inside the U-shaped mounting groove 8. The limiting slot can position the shear plates 10 and prevent them from rotating excessively. At this time, one side of the two shear plates 10 that have rotated 90 degrees is parallel to one end of the fixed baffle 9, and the side wall of the shear plates 10 is in contact with the top surface of the shock-absorbing rubber pad 32 filled inside the U-shaped mounting groove 8, forming a stable folded state. At this time, the top of the pneumatic hammer rod 33 in the pneumatic hammer mechanism provided in the middle of the fixed block 16 will be exposed, thereby completing the quick switching of disassembly tools. When the two shear plates 10 rotate... After the 90-degree adjustment is completed, the self-locking characteristics of the first worm gear 18 and the turbine 22 securely lock the adjusted angle of the shear plate 10, eliminating the need for additional locking components and simplifying the structural design. This also effectively prevents the shear plate 10 from loosening or rotating under equipment vibration or external impact, ensuring the structural stability of the pneumatic hammer during operation. Similarly, when switching back to the dismantling shear mechanism, the PLC controller controls the second motor 28 to reverse, causing the shear plate 10 to rotate 90 degrees in the opposite direction and return to the initial closed position, allowing shearing operations to begin. The operation is convenient and requires no manual assistance. In addition, the fixing rods 20 on both sides of the fixing block 16 further reinforce the structural strength of the U-shaped mounting groove 8, preventing deformation of the U-shaped mounting groove 8 due to high-frequency vibration during operation.

[0026] It should be noted that the turbines 22 and the first worm gear 18 at both ends of the shear plate 10 cooperate with each other to support the shear plate 10, thereby improving the stability of the rotation adjustment of the shear plate 10. Specifically, each shear plate 10 has a set of turbines 22 and first worm gear 18 at both ends, and the four sets of turbine and worm gear mechanisms are symmetrically distributed on both sides of the fixed block 16, so that the two ends of the shear plate 10 can be subjected to uniform driving force, avoiding bending and deformation of the shear plate 10 due to uneven force, and extending the service life of the shear plate 10. The shaft connecting the turbine 22 and the shear plate 10 is made of high-strength alloy steel, and the shaft and the shear plate 10 are connected by a high-strength alloy steel shaft. The plates 10 are fixed together using a combination of interference fit and welding to ensure connection strength and withstand the enormous shearing force and rotational torque generated during shearing operations. A wear-resistant bearing is installed between the first worm 18 and the slider 19 to reduce friction during rotation of the first worm 18, improve rotational smoothness, reduce wear, and extend the service life of the worm gear mechanism. Furthermore, the meshing surfaces of the first worm 18 and the turbine 22 are hardened to a hardness of HRC58-62, improving the wear resistance and load-bearing capacity of the meshing surfaces, making them suitable for the high-frequency vibration and high-load conditions required in demolition operations. The symmetrically distributed worm gear support structure also provides auxiliary support for the shear plate 10 during shearing operations, dispersing the impact of shearing force on the connection parts of the shear plate 10, preventing loosening of the connection parts of the shear plate 10, and improving the shearing stability and operating accuracy of the dismantling shear mechanism. The two second motors 28 adopt a synchronous motor design to ensure consistent output speed and avoid the two shear plates 10 rotating at different angles due to speed deviation, thus preventing jamming. The worm gears 22 set at both ends of the shear plate 10 cooperate with the first worm gear 18 to support the shear plate 10. The lead angle of the first worm gear 18 is less than 1 / 2. The friction angle is used to improve the stability of the rotation adjustment of the shear plate 10. The cooperation structure between the strip groove 30 and the rectangular block can not only stably transmit torque and drive the first worm gear 18 to rotate, but also allow the first worm gear 18 to slide slightly along the axial direction of the drive guide shaft 29. It can adapt to assembly errors and positional deviations when the shear plate 10 rotates, and avoid the first worm gear 18 and the turbine 22 from meshing and jamming. The slider 19 can guide and support the rotation of the shear plate 10, prevent the shear plate 10 from tilting or deviating when rotating, and ensure the smoothness of the rotation process. The PLC controller model is S7-200.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 , Figure 10 and Figure 11As shown, the shearing mechanism includes two shear plates 10 symmetrically distributed at the middle of one end of the fixed block 16. One end of the shear plate 10 is rotatably connected to two sliders 19 symmetrically distributed at one end of the fixed support plate 15. The middle of one end of the turbine 22 is fixedly connected to the shear plate 10 via a shaft. A hydraulic telescopic rod 17 is installed and fixed at the end of the slider 19 away from the shear plate 10. One end of the hydraulic telescopic rod 17 is connected through the end of the fixed block 16 away from the fixed rod 20. The hydraulic telescopic rod 17 drives the slider 19 to slide along the fixed support plate 15 to one end under the guidance of the fixed rod 20 and the drive guide shaft 29, thereby causing the shear plate 10 rotatably connected between the two sliders 19 to slide inward and outward to adjust the distance between the two shear plates 10. A shearing groove is opened on the opposite side of the shear plate 10. A foldable rubber strip 27 is fixed at one end of the slider 19. One end of the foldable rubber strip 27 is fixedly connected to the U-shaped mounting groove 8. The foldable rubber strip 27 is slidably connected to the fixed support plate 15.

[0028] In this embodiment, when the shears are used, the PLC controller issues a synchronous control command to control the four hydraulic telescopic rods 17 symmetrically distributed on the fixed block 16 to simultaneously extend and retract. Since the extension and retraction directions of the two hydraulic telescopic rods 17 symmetrically distributed in the same direction on the fixed block 16 are opposite, that is, when one side of the hydraulic telescopic rod 17 extends to one end, the other symmetrical hydraulic telescopic rod 17 on the same side simultaneously extends to the other end. Therefore, when the four hydraulic telescopic rods 17 extend and retract synchronously, the corresponding two hydraulic telescopic rods 17 will simultaneously push the corresponding fixedly connected sliders 19. Under the dual guidance of the fixed rod 20 passing through the top of the slider 19 and the drive guide shaft 29 passing through the bottom, the slider 19 slides smoothly to one end along the sliding track of the fixed support plate 15 at the bottom. During the sliding process, the slider 19 will drive the shear plate 10 rotatably connected to the corresponding slider 19 via the shaft, along the two fixed supports 15. The pre-reserved gap cavity between the fixed baffles 9 slides to one end. During this process, the two shear plates 10 will move away from each other or towards each other in a straight line under the pushing and pulling action of the corresponding connected hydraulic telescopic rods 17. When the two shear plates 10 approach each other, the shearing grooves opened on the opposite side of the shear plates 10 will fit together. Utilizing the anti-slip and force-increasing effect of the shearing grooves, they firmly bite the building components (such as steel bars, concrete blocks, metal frames, etc.). Through the powerful thrust provided by the hydraulic telescopic rods 17, the components are sheared and removed. As the slider 19 slides along the fixed bracket plate 15, it will simultaneously drive the foldable rubber strip 27 fixed at one end of the slider 19 to produce corresponding folding or unfolding actions. When the slider 19 slides towards the fixed block 16, the foldable rubber strip 27 folds and contracts accordingly. When the slider 19 slides away from the fixed block 16, the foldable rubber strip 27 unfolds and extends accordingly.

[0029] It should be noted that the four hydraulic telescopic rods 17 adopt a synchronous hydraulic drive design to ensure consistent telescopic speed and precise telescopic amount, avoiding uneven force and sliding tilt of the shear plate 10 due to telescopic deviation of a single hydraulic telescopic rod 17, which would affect the shearing accuracy. The sliding track of the fixed support plate 15 is made of wear-resistant material and coated with grease, which can reduce the friction of the slider 19 during sliding, ensuring smooth sliding and preventing wear. The fixed baffle 9 can laterally limit the sliding of the shear plate 10, preventing the shear plate 10 from shifting left or right during sliding and ensuring that the two shear plates 10 always maintain a symmetrical state. The shearing groove on the shear plate 10 adopts a sawtooth structure design, and the tooth surface is quenched, with high hardness and strong wear resistance, which can effectively improve the shearing accuracy. The interlocking force prevents component slippage, reduces wear on the shear plate 10, and extends its service life. The foldable rubber belt 27 is made of oil-resistant, wear-resistant, and dustproof nitrile rubber. When unfolded, it can completely cover the sliding gap between the slider 19 and the fixed support plate 15, the meshing part between the first worm gear 18 and the turbine 22, and the exposed part of the drive guide shaft 29. It can effectively block dust, gravel, debris and other debris generated during demolition operations, prevent debris from falling onto the meshing tooth surface of the turbine 22 and the first worm gear 18, prevent tooth surface wear and jamming, and prevent dust from entering the sliding track of the slider 19, preventing the slider 19 from sliding and jamming. This ensures the long-term stable operation of the demolition shear mechanism and reduces the maintenance frequency and cost of the equipment.

[0030] like Figure 9 , Figure 10 and Figure 11 As shown, the pneumatic hammer mechanism includes a cylinder 23 that passes through the middle of the fixed support plate 15. One end of the cylinder 23 is fixedly connected to the middle of the fixed support plate 15. A pneumatic hammer rod 33 is slidably connected to the middle of the inner side of the cylinder 23. One end of the pneumatic hammer rod 33 is connected through the middle of the fixed block 16. An auxiliary spring 34 is sleeved at the middle of the pneumatic hammer rod 33 located inside the cylinder 23. A shock-absorbing rubber pad 32 is filled and fixed below the fixed support plate 15. One end of the cylinder 23 is fixedly connected to the middle of the shock-absorbing rubber pad 32 near the fixed support plate 15. The side wall of the cylinder 23 is symmetrically provided with an air inlet and an exhaust port.

[0031] In this embodiment, when the pneumatic hammer mechanism demolishes a building, compressed air is supplied to the cylinder 23. The thrust generated by the compressed air acts on the pneumatic hammer rod 33, pushing it to slide rapidly away from the fixed support plate 15 along the central sliding track inside the cylinder 23. At this time, the auxiliary spring 34 located inside the cylinder 23 in the middle of the pneumatic hammer rod 33 is stretched synchronously, storing elastic potential energy. When the end of the pneumatic hammer rod 33 impacts the building component to be demolished, the impact force breaks and demolishes the building component. After the impact, the compressed air inside the cylinder 23 is discharged, and the air supply stops. At this time, the stretched auxiliary spring 34 releases its elastic potential energy, generating a reverse pulling force, which pulls the pneumatic hammer rod 33 to quickly return to its original position along the sliding track inside the cylinder 23 towards the fixed support plate 15, preparing for the next impact. This process is repeated, using air... The intake and exhaust of compressed air inside cylinder 23, and the stretching and resetting of auxiliary spring 34, drive the pneumatic hammer rod 33 to perform high-frequency reciprocating sliding impact motion, continuously achieving the demolition of buildings. Throughout the operation, the shock-absorbing rubber pad 32 under the fixed bracket plate 15 can effectively absorb the high-frequency vibration generated during the operation of the pneumatic hammer, reducing the transmission of vibration to the U-shaped mounting groove 8, the multi-directional angle adjustment mechanism, and the mounting seat 1, avoiding vibration-induced loosening of connections and increased wear of various components, while also reducing operating noise. In addition, the sliding fit structure between cylinder 23 and pneumatic hammer rod 33 can ensure the accurate sliding trajectory of pneumatic hammer rod 33, avoiding deviation that could lead to impact position deviation. Auxiliary spring 34 not only plays a resetting role but also buffers the reaction force generated during the impact of pneumatic hammer rod 33, reducing the impact damage of the reaction force on the inner wall of cylinder 23 and extending the service life of the pneumatic hammer mechanism.

[0032] It should be noted that: an air compressor is installed at one end of the inner side of the U-shaped mounting groove 8, and a high-pressure air pipe is fixed at one end of the air compressor. The high-pressure air pipe is connected to the air inlet fixed at one end of the cylinder 23 to achieve stable compressed air supply. The air compressor is controlled by the PLC controller. The shock-absorbing rubber pad is made of nitrile rubber. The auxiliary spring 34 (model: YTH-55, cylindrical helical spring, specification 55803, stainless steel) and the cylinder 23 are made of seamless steel pipe. The fixing bracket 15 is made of Q355 high-strength steel. The pneumatic hammer rod 33 is made of alloy steel. The fixing block 16 is made of carbon steel.

[0033] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 12As shown, a fixing rod 7 is fixedly connected to the middle of the other end of the U-shaped mounting groove 8. A U-shaped connecting pad 4 is rotatably connected to one end of the fixing rod 7. A positioning pin seat 2 is rotatably connected to one end of the U-shaped connecting pad 4. A first gear disk 24 is provided at the connection position between the fixing rod 7 and the U-shaped connecting pad 4. The first gear disk 24 is located in the U-shaped dustproof cavities opened at both ends of the U-shaped connecting pad 4. The middle of the first gear disk 24 is fixedly connected to one end of the fixing rod 7 by a shaft. A first adjusting shaft 11 is fixedly connected to the middle of one end of the U-shaped connecting pad 4. A second adjusting shaft 12 passes through the middle of the first adjusting shaft 11. Protective sealing plates 5 are fixedly installed at both ends of the U-shaped connecting pad 4 by bolts. A first driving gear rod 13 passes through the middle of the U-shaped connecting pad 4 away from the fixing rod 7. The two ends of the first driving gear rod 13 are respectively meshed with the corresponding first gear disk 24. The shape of the first driving gear rod 13 in top view is I-shaped. A conical gear disk is fixed to the second adjusting shaft 12 in the direction close to the fixing rod 7. A first bevel gear 14, which meshes with a bevel gear disk, is fixed on a shaft fixedly connected to the first drive gear rod 13. A second turbine is fixedly connected to both the first adjusting shaft rod 11 away from the U-shaped connecting pad 4 and the second adjusting shaft rod 12 away from the bevel gear disk. A second worm gear 26 meshes with one side of the second turbine. A rectangular mounting cavity frame 31 is fixed to one end of the positioning column seat 2. Both the second turbine and the second worm gear 26 are located inside the rectangular mounting cavity frame 31. The two ends of the second worm gear 26 are rotatably connected to the two ends inside the rectangular mounting cavity frame 31, respectively. A protective clamping plate 6 is provided outside the first bevel gear 14. The protective clamping plate 6 is detachably connected to the U-shaped connecting pad 4 by bolts. A rectangular mounting cavity is opened at one end of the rectangular mounting cavity frame 31. One end of the second worm gear 26 is connected through the rectangular mounting cavity. A first motor 25 is fixed to one end of the second worm gear 26. The first motor 25 is installed inside the rectangular mounting cavity. A sealing plate 21 is fixed to one end of the rectangular mounting cavity by bolts.

[0034] In this embodiment, during angle adjustment during disassembly, the corresponding first motor 25 drives the second worm gear 26 fixed at its output end to rotate. The rotating second worm gear 26 drives the corresponding fixedly connected first adjusting shaft 11 to rotate through the meshing worm gear. The rotating first adjusting shaft 11 drives the U-shaped connecting pad 4 fixed at one end to rotate under the support of the positioning column seat 2. The rotating U-shaped connecting pad 4 drives the fixed rod 7 rotatably connected at one end, the U-shaped mounting groove 8 fixed on the fixed rod 7, and the pneumatic hammer mechanism installed on the U-shaped mounting groove 8 to rotate synchronously with the disassembly shear mechanism, adjusting the orientation of the disassembly tool by 360 degrees. Then, the corresponding first motor 25 drives the second worm gear 26 fixed at its output end to rotate. The rotating second worm gear 26 drives the corresponding fixedly connected second adjusting shaft 12 to rotate through the meshing worm gear. The rotating second adjusting shaft 12 drives the corresponding fixedly connected second adjusting shaft 12 to rotate through the tapered shaft 12 fixed at one end. The gear disk drives the first bevel gear 14, which meshes with the bevel gear disk, to rotate. The rotating first bevel gear 14 drives the first drive gear rod 13, which is fixed in the middle, to rotate. The rotating first drive gear rod 13 drives the first gear disk 24, which is meshed at both ends, to rotate. The two rotating first gear disks 24 drive the fixed rod 7, which is fixedly connected between them, to rotate (0 degrees to 180 degrees). When the fixed rod 7 adjusts its pitch angle, it drives the U-shaped mounting groove 8 fixed on the fixed rod 7, the fixed baffle 9 symmetrically fixed on the U-shaped mounting groove 8, and the pneumatic hammer mechanism and demolition shear mechanism installed in the U-shaped mounting groove 8 to adjust their pitch angles synchronously. After the angle is adjusted, the self-locking characteristic between the second worm gear 26 and the corresponding turbine locks the adjusted angle and position. At the same time, the self-locking characteristic between the first drive gear rod 13 and the first gear disk 24 locks the adjusted angle of the fixed rod 7.

[0035] It should be noted that during use, the U-shaped dustproof cavities on both sides of the protective sealing plate 5 and the U-shaped connecting pad 4 form a sealed structure that surrounds the first drive gear rod 13 and the first gear disk 24, preventing external dust from falling onto the first drive gear rod 13 and the first gear disk 24 and affecting their performance. The protective sealing plate 5 has heat dissipation holes to dissipate the heat generated by the movement between the first drive gear rod 13 and the first gear disk 24. A dustproof net is installed inside the heat dissipation holes. The protective clamp plate 6 and the U-shaped connecting pad 4 form a sealed dustproof structure that wraps around the first bevel gear 14, preventing external dust from affecting the movement of the first bevel gear 14. The protective clamp plate 6 has heat dissipation holes, and a dustproof net is fixed inside the heat dissipation holes.

[0036] like Figure 10 and Figure 12As shown, a mounting base 1 is snapped onto one end of a rectangular mounting cavity 31. A mating ring plate 3 is fixed to the rectangular mounting cavity 31 in the direction close to the positioning post 2. Multiple snap-fit ​​tenons 38 are fixedly connected at equal intervals on three sides of the outer surface of the rectangular mounting cavity 31. A clamping cavity 35 is opened inside the mounting base 1. Multiple snap-fit ​​tenon grooves 36 matching the size of the snap-fit ​​tenons 38 are opened at equal intervals on the inner wall of the clamping cavity 35. Multiple bolt rods 37 fixedly connected to the mounting base 1 are distributed at equal intervals on the contact surface between the mounting base 1 and the mating ring plate 3. A sealing nut is threaded onto one end of the bolt rod 37 that passes through the mating ring plate 3.

[0037] In this embodiment, during installation, the first adjusting shaft 11, the second adjusting shaft 12, and the second worm gear 26 are installed into the rectangular mounting cavity 31. Then, the rectangular mounting cavity 31 is snapped into the clamping cavity 35 opened in the mounting base 1, so that the snapping tenon 38 fixed outside the rectangular mounting cavity 31 is snapped into the snapping tenon groove 36 opened at the corresponding position in the clamping cavity 35. At this time, the mating ring plate 3 fixed at the connection position between the positioning column seat 2 and the rectangular mounting cavity 31 will snap into one end of the mounting base 1, so that the bolt rod 37 fixed on the mounting base 1 is snapped into the threaded hole opened at the corresponding position on the mating ring plate 3. Then, a nut is used to seal one end of the bolt rod 37.

[0038] Working Principle: In use, the mounting base 1 is fixed to the corresponding excavator's robotic arm via bolts through the fixing hole at one end. The excavator then moves the dismantling tool on the mounting base 1 to the position to be dismantled using the robotic arm. When the dismantling tool is aligned with the construction workpiece to be dismantled, the PLC controller sends a synchronous control command to control the four symmetrically distributed hydraulic telescopic rods 17 on the fixing block 16 to extend and retract simultaneously. Since the extension and retraction directions of two symmetrically distributed hydraulic telescopic rods 17 on the same direction of the fixing block 16 are opposite, that is, when one hydraulic telescopic rod 17 extends to one end, the other symmetrical hydraulic telescopic rod 17 on the same side extends to the other end simultaneously. Therefore, when the four hydraulic telescopic rods 17 extend and retract synchronously, the corresponding two hydraulic telescopic rods 17 will simultaneously push the corresponding fixedly connected slider 19 at the top of the slider 19. Guided by the through-through fixed rod 20 and the through-through drive guide rod 29 at the bottom, the component slides smoothly to one end along the sliding track of the fixed support plate 15 at the bottom. During the sliding process, the slider 19 will drive the shear plate 10 connected to the corresponding slider 19 by the shaft to slide to one end along the reserved gap cavity between the two fixed baffles 9. During this process, the two shear plates 10 will move away from each other or closer to each other under the pushing and pulling action of the corresponding connected hydraulic telescopic rod 17. When the two shear plates 10 approach each other, the shearing grooves opened on the opposite side of the shear plates 10 will fit together. Utilizing the anti-slip and force-increasing effect of the shearing grooves, the component (such as steel bars, concrete blocks, metal frames, etc.) will be firmly bitten. The component will be sheared and removed by the powerful thrust provided by the hydraulic telescopic rod 17. When the shearing and removal is completed, the removal tool needs to be replaced. The PLC controller issues control commands to simultaneously start the two second motors 28. The two second motors 28 drive the two drive guide shafts 29, which are fixedly connected to their output ends, to rotate synchronously. The rotating drive guide shafts 29, through four strip-shaped grooves 30 on their outer surfaces and four rectangular blocks that slidably engage with these grooves, drive the four first worm gears 18, which are slidably connected to them, to rotate synchronously. When the drive guide shafts 29 drive the two first worm gears 18 to rotate, the rotating first worm gears 18 drive the corresponding meshing turbines 22 to rotate relative to each other. The two turbines 22, rotating relative to each other, drive the shafts fixed in the middle to rotate the shafts in the middle. Two shear plates 10, which are fixedly connected to each other, rotate relative to each other around the corresponding slider 19. When the two shear plates 10 rotate 90 degrees synchronously, so that one end of the two shear plates 10 is locked in the preset limit slot inside the U-shaped mounting groove 8, the limit slot can position the shear plates 10 and prevent the shear plates 10 from rotating excessively. At this time, one side of the two shear plates 10 that have rotated 90 degrees is parallel to one end of the fixed baffle 9, and the side wall of the shear plates 10 is in contact with the top surface of the shock-absorbing rubber pad 32 filled inside the U-shaped mounting groove 8, forming a stable folded state. At this time, the top of the pneumatic hammer rod 33 in the pneumatic hammer mechanism provided in the middle of the fixed block 16 will be exposed, thereby completing the quick switching of disassembly tools. At this time, the pneumatic hammer rod 33 will be aligned with the building to be disassembled. When the pneumatic hammer mechanism demolishes a building, compressed air is supplied to the cylinder 23. The thrust generated by the compressed air acts on the pneumatic hammer rod 33, pushing it to slide rapidly away from the fixed support plate 15 along the central sliding track inside the cylinder 23. At this time, the auxiliary spring 34 located inside the cylinder 23 in the middle of the pneumatic hammer rod 33 is stretched synchronously, storing elastic potential energy. When the end of the pneumatic hammer rod 33 impacts the building component to be demolished, the impact force breaks and demolishes the building component. After the impact is completed, the compressed air inside the cylinder 23 is discharged, and the air source stops supplying air. At this time, the stretched auxiliary spring 34 releases its elastic potential energy and generates a reverse pulling force, which pulls the pneumatic hammer rod 33 to quickly return to its original position along the sliding track inside the cylinder 23 towards the fixed bracket plate 15, preparing for the next impact. This process is repeated. Through the introduction and discharge of compressed air inside the cylinder 23 and the stretching and returning of the auxiliary spring 34, the pneumatic hammer rod 33 is driven to perform high-frequency reciprocating sliding impact motion, continuously achieving the demolition of the building. During the building demolition process, the corresponding first motor 25 drives the second worm gear 26, which is fixed at the output end, to rotate. The rotating second worm gear 26 drives the corresponding fixed first adjusting shaft 11 to rotate through the meshing worm gear. The rotating first adjusting shaft 11 drives the U-shaped connecting pad 4, which is fixed at one end, to rotate under the support of the positioning column seat 2. The rotating U-shaped connecting pad 4 drives the fixed rod 7, which is rotatably connected at one end, the U-shaped mounting groove 8 fixed on the fixed rod 7, and the pneumatic hammer mechanism and demolition shear mechanism installed on the U-shaped mounting groove 8 to rotate 360 ​​degrees synchronously with the demolition shear mechanism to adjust the orientation of the demolition tool. Then, the corresponding first motor 25 drives the second worm gear 26, which is fixed at the output end, to rotate. The rotating second worm gear 26 drives the corresponding fixed second adjusting shaft 11 through the meshing worm gear. The rod 12 rotates, and the rotating second adjusting shaft rod 12 drives the first bevel gear 14, which is meshed with the bevel gear disk, to rotate through the bevel gear disk fixed at one end. The rotating first bevel gear 14 drives the first drive gear rod 13, which is fixed in the middle, to rotate. The rotating first drive gear rod 13 drives the first gear disk 24, which is meshed at both ends, to rotate. The two rotating first gear disks 24 drive the fixed rod 7, which is fixed between them, to rotate (0 degrees to 180 degrees). When the fixed rod 7 adjusts its pitch angle, it drives the U-shaped mounting groove 8 fixed on the fixed rod 7, the fixed baffle 9 symmetrically fixed on the U-shaped mounting groove 8, and the pneumatic hammer mechanism and demolition shear mechanism installed in the U-shaped mounting groove 8 to adjust their pitch angles synchronously. After adjusting the angle, the effect of building demolition is improved in sequence.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A demolition device for buildings, comprising a mounting base (1), characterized in that: A multi-directional angle adjustment mechanism is installed on the mounting base (1). A U-shaped mounting groove (8) is fixedly installed on the multi-directional angle adjustment mechanism. A pneumatic hammer mechanism is installed in the middle of the inner side of the U-shaped mounting groove (8). Two fixed baffles (9) are symmetrically fixedly connected to the U-shaped mounting groove (8). A removal shear mechanism is installed at one end of the fixed baffle (9). A switching mechanism is installed between the removal shear mechanism and the pneumatic hammer mechanism. The switching mechanism includes a fixed support plate (15) fixedly connected to one end of the inner side of the U-shaped mounting groove (8). A fixed block (16) is fixedly connected to the middle of the fixed support plate (15). Two sliders (19) are symmetrically distributed at both ends of the fixed block (16). The sliders (19) are slidably connected to the fixed support plate (15). The sliders (19) are close to the fixed block (16). A turbine (22) is rotatably connected in the direction of the turbine (22) and a first worm (18) is meshed with the turbine (22) in the direction close to the fixed bracket plate (15). A drive guide shaft (29) passes through the middle of the first worm (18). A second motor (28) is fixed at one end of the drive guide shaft (29). Two support pads are symmetrically distributed on the second motor (28). The two support pads are fixedly connected to the fixed bracket plate (15). A fixing rod (20) passes through one end of the fixing block (16) away from the fixed bracket plate (15). The two ends of the fixing rod (20) are fixedly connected to the U-shaped mounting groove (8). The first worm (18) drives the demolition shear mechanism to rotate through the turbine (22) to generate folding and expose the pneumatic hammer mechanism, so as to realize the rapid switching and locking of the two.

2. The demolition device for buildings according to claim 1, characterized in that: The dismantling shear mechanism includes two shear plates (10) symmetrically distributed at the middle of one end of the fixed block (16). One end of the shear plate (10) is rotatably connected to two sliders (19) symmetrically distributed at one end of the fixed support plate (15). The middle of one end of the turbine (22) is fixedly connected to the shear plate (10) via a shaft. A hydraulic telescopic rod (17) is installed and fixed at the end of the slider (19) away from the shear plate (10). One end of the hydraulic telescopic rod (17) is connected through the end of the fixed block (16) away from the fixed rod (20).

3. The demolition device for buildings according to claim 2, characterized in that: The hydraulic telescopic rod (17) drives the slider (19) to slide along the fixed bracket plate (15) to one end under the guidance of the fixed rod (20) and the drive guide shaft (29), thereby driving the shear plate (10) rotatably connected between the two sliders (19) to slide inward and outward to adjust the distance between the two shear plates (10). The shear plate (10) has a shearing groove on the opposite side. One end of the slider (19) is fixed with a foldable rubber strip (27). One end of the foldable rubber strip (27) is fixedly connected to the U-shaped mounting groove (8). The foldable rubber strip (27) is slidably connected to the fixed bracket plate (15).

4. The demolition device for buildings according to claim 1, characterized in that: The pneumatic hammer mechanism includes a cylinder (23) that passes through the middle of the fixed support plate (15). One end of the cylinder (23) is fixedly connected to the middle of the fixed support plate (15). A pneumatic hammer rod (33) is slidably connected to the middle of the inner side of the cylinder (23). One end of the pneumatic hammer rod (33) is connected through the middle of the fixed block (16). An auxiliary spring (34) is sleeved at the middle of the pneumatic hammer rod (33) located inside the cylinder (23). A shock-absorbing rubber pad (32) is filled and fixed below the fixed support plate (15). One end of the cylinder (23) is fixedly connected to the middle of the shock-absorbing rubber pad (32) in the direction close to the fixed support plate (15).

5. A demolition device for buildings according to claim 1, characterized in that: The drive guide shaft (29) has four strip grooves (30) equidistantly arranged along the circumferential direction. The inner wall of the first worm (18) is fixedly connected with four rectangular blocks that match the strip grooves (30) equidistantly along the circumferential direction. The second motor (28) drives the corresponding first worm (18) to rotate through the strip grooves (30) opened on the drive guide shaft (29) and the rectangular blocks slidably connected in the strip grooves (30).

6. The demolition device for buildings according to claim 1, characterized in that: A fixing rod (7) is fixedly connected to the middle of the other end of the U-shaped mounting groove (8). A U-shaped connecting pad (4) is rotatably connected to one end of the fixing rod (7). A positioning column seat (2) is rotatably connected to one end of the U-shaped connecting pad (4). A first gear disk (24) is provided at the connection position between the fixing rod (7) and the U-shaped connecting pad (4). The first gear disk (24) is located in the U-shaped dustproof cavity opened at both ends of the U-shaped connecting pad (4). The middle of the first gear disk (24) is fixedly connected to one end of the fixing rod (7) through a shaft. A first adjusting shaft (11) is fixedly connected to the middle of one end of the U-shaped connecting pad (4). A second adjusting shaft (12) passes through the middle of the first adjusting shaft (11). Protective sealing plates (5) are fixedly installed at both ends of the U-shaped connecting pad (4) by bolts.

7. A demolition device for buildings according to claim 6, characterized in that: The U-shaped connecting pad (4) is connected to a first drive gear rod (13) through its middle portion away from the fixed rod (7). The two ends of the first drive gear rod (13) are respectively meshed with corresponding first gear discs (24). The first drive gear rod (13) has an I-shaped shape when viewed from above. A conical gear disc is fixed to the second adjusting shaft rod (12) in the direction close to the fixed rod (7). A first conical gear (14) is fixed to the shaft rod that is fixed between the first drive gear rods (13) and meshes with the conical gear disc. The first adjusting shaft rod (11) is located away from the U-shaped connecting pad (4). A second turbine is fixedly connected to both the direction of the first bevel gear (4) and the direction of the second adjusting shaft (12) away from the bevel gear disk. A second worm (26) is meshed on one side of the second turbine. A rectangular mounting cavity (31) is fixed to one end of the positioning column seat (2). The second turbine and the second worm (26) are both located inside the rectangular mounting cavity (31). The two ends of the second worm (26) are rotatably connected to the two ends inside the rectangular mounting cavity (31). A protective plate (6) is provided outside the first bevel gear (14). The protective plate (6) and the U-shaped connecting pad (4) are detachably connected by bolts.

8. A demolition device for buildings according to claim 7, characterized in that: One end of the rectangular mounting cavity frame (31) is provided with a rectangular mounting cavity, one end of the second worm (26) is connected through the rectangular mounting cavity, one end of the second worm (26) is fixed with a first motor (25), the first motor (25) is installed in the rectangular mounting cavity, and one end of the rectangular mounting cavity is fixed with a sealing plate (21) by bolts.

9. A demolition device for buildings according to claim 7, characterized in that: One end of the rectangular mounting cavity (31) is snapped with a mounting base (1). A docking ring plate (3) is fixed on the rectangular mounting cavity (31) in the direction close to the positioning column base (2). Multiple snap-fit ​​tenons (38) are fixedly connected at equal intervals on the three surfaces of the outer surface of the rectangular mounting cavity (31). A clamping cavity (35) is opened in the mounting base (1). Multiple snap-fit ​​tenon grooves (36) matching the size of the snap-fit ​​tenons (38) are opened at equal intervals on the inner wall of the clamping cavity (35). Multiple bolt rods (37) fixedly connected to the mounting base (1) are distributed at equal intervals on the contact surface between the mounting base (1) and the docking ring plate (3). A sealing nut is threaded on one end of the bolt rod (37) that passes through the docking ring plate (3).

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