Concrete demolition construction device
By installing a transparent cover and atomizing nozzle on the outside of the pneumatic hammer, the problem of insufficient protection of existing equipment is solved, dust control and debris splash prevention are achieved, and the safety and environmental protection of concrete demolition operations are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHICHENG WANJING CONCRETE CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-06-09
AI Technical Summary
Existing concrete demolition equipment lacks effective protective measures due to "exposed operation," resulting in dust affecting visibility and personnel health, flying debris damaging equipment and threatening personal safety, and increasing cleanup costs.
A transparent cover and a diversion ring are installed on the outside of the pneumatic drill body. The transparent cover physically blocks dust and debris, and the atomizing nozzle at the bottom of the diversion ring sprays a water curtain to absorb fine dust. Combined with a simple connection mechanism, it can be easily disassembled and assembled.
It effectively prevents dust diffusion and debris splashing, ensures visibility in the working environment, reduces health risks, reduces cleaning workload, and improves construction safety and environmental protection.
Smart Images

Figure CN224338685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of concrete demolition devices, and more specifically, to a concrete demolition construction device. Background Technology
[0002] In fields such as building renovation, road refurbishment, and emergency rescue, the demolition of concrete structures is a crucial construction phase. Due to its high strength and durability, concrete requires specialized equipment for effective breaking during demolition. Currently, the mainstream demolition equipment in the industry mainly includes pneumatic drills, electric drills, and air drills. These devices typically operate on the core principle of mechanical impact, converting power into high-frequency impact kinetic energy through an internal transmission structure. This energy is applied to the concrete surface or weak points within the concrete structure, thereby breaking and peeling off concrete blocks. They are widely used in small-scale precision demolition, wall breaking, and ground chiseling, and are indispensable basic equipment in current concrete demolition operations.
[0003] However, existing concrete demolition equipment, such as pneumatic drills, generally suffers from the technical defect of "exposed operation" in actual operation, lacking effective protective measures. This leads to a series of problems affecting the working environment and construction safety. On the one hand, when pneumatic drills impact and break concrete, they instantly generate a large amount of fine concrete dust. This dust, without any cover, directly diffuses into the work area, severely reducing visibility and affecting operators' accurate judgment of work locations. It can also be inhaled by workers, posing a potential health hazard. On the other hand, the impact of pneumatic drills produces a large amount of flying concrete fragments. These fragments have a strong impact force, which can cause collision damage to surrounding construction equipment and building components, and may also pose a personal safety threat to other personnel in the work area. At the same time, the flying fragments increase the workload and cost of subsequent cleanup of the construction environment, thus restricting the safety, environmental protection, and efficiency of concrete demolition operations.
[0004] In conclusion, in order to improve the working environment, enhance construction safety and work efficiency of concrete demolition operations, it is necessary to address the problems caused by the lack of effective protective measures for existing demolition equipment, such as pneumatic hammers, which operate in an "exposed" state. This leads to dust pollution affecting visibility and personnel health, as well as flying debris damaging equipment, threatening personal safety, and increasing cleanup costs. The goal is to significantly improve the safety, environmental friendliness, and efficiency of concrete demolition operations. Utility Model Content
[0005] The concrete demolition construction device provided by this utility model aims to solve the following problems: existing demolition equipment, represented by pneumatic hammers, lacks effective protective measures due to "exposed operation," resulting in dust affecting visibility and personnel health, flying debris damaging equipment and threatening personal safety, and increasing cleanup costs.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete demolition construction device, including a pneumatic hammer body, a nested part movably sleeved on the outer side of the pneumatic hammer body, an abutment ring provided on the upper side of the nested part, the abutment ring being fixedly connected to the outer side of the pneumatic hammer body, a fixed sleeve being fixedly connected to the upper part of the outer side of the nested part, a diversion ring pipe and a transparent cover being provided on the lower side of the fixed sleeve, the diversion ring pipe being located inside the transparent cover, and multiple atomizing nozzles and a water inlet pipe being fixedly connected to the bottom of the diversion ring pipe, a first connecting mechanism being provided between the fixed sleeve and the diversion ring pipe, the first connecting mechanism being used for the disassembly and assembly of the diversion ring pipe on the fixed sleeve, and a second connecting mechanism being provided between the fixed sleeve and the transparent cover, the second connecting mechanism being used for the disassembly and assembly of the transparent cover on the fixed sleeve.
[0007] In a preferred embodiment, the connection mechanism includes a plug-in component and a locking component, which are interconnected between the fixed sleeve and the diversion ring tube. The plug-in component is used to plug the diversion ring tube into the fixed sleeve, and the locking component is used to fix the position of the plug-in component.
[0008] In a preferred embodiment, the plug-in assembly includes a plurality of insertion holes extending through the fixed sleeve and a support rod extending through and inserted into each insertion hole, the lower end of each support rod being fixedly connected to the diversion ring pipe.
[0009] In a preferred embodiment, the locking assembly includes a positioning ring fixed to the outer side of the middle portion of the support rod and an internally threaded positioning sleeve threaded to the outer side of the top of the support rod, wherein the top of the support rod is provided with a thread adapted to the internally threaded positioning sleeve.
[0010] In a preferred embodiment, the connecting mechanism two includes a threaded groove formed on the outer side of the bottom of the fixed sleeve, a threaded ring threadedly connected in the threaded groove, and a mounting ring fixedly connected to the bottom of the threaded ring, with the mounting ring and the transparent cover being fixedly connected.
[0011] In a preferred embodiment, the outer side of the pneumatic pick body is fixedly connected with multiple locking strips, and the nested inner side is provided with multiple slots for the locking strips to be inserted.
[0012] In a preferred embodiment, a groove is provided on the lower outer side of the pneumatic pick body, and a limiting ring is rotatably connected in the groove. Multiple corner blocks with the same cross-section and distribution as the locking strip are fixedly connected to the outer side of the limiting ring, and each corner block is fixed to the nest by bolts.
[0013] In a preferred embodiment, the outer side of the transparent cover has multiple perforations, and two opposing handles are fixedly connected to the outer side of the transparent cover.
[0014] The beneficial effects of this utility model are as follows:
[0015] This invention, by installing a transparent cover on the outside of the pneumatic pick, can directly and physically shield the dust and flying debris generated by the pneumatic pick impacting concrete, preventing dust from spreading into the work area and debris from flying randomly. At the same time, the transparent material can ensure that the operator can clearly observe the work point. It solves the problems of dust reducing visibility and debris damaging equipment / threatening personal safety in the existing "exposed operation". It not only improves the visibility of the working environment, but also reduces the safety hazards of debris to surrounding equipment and personnel, and reduces the amount of subsequent cleanup work.
[0016] This invention utilizes a diversion ring pipe and multiple atomizing nozzles connected to the bottom. When water is introduced through a water inlet pipe, the atomizing nozzles form a uniform water curtain, which adsorbs fine dust particles that are not completely blocked within the transparent cover. This further reduces the dust concentration in the work area. Compared to relying solely on physical shielding, this atomizing dust suppression design reduces dust diffusion at the source, effectively preventing construction workers from inhaling dust and harming their health. It compensates for the lack of active dust suppression measures in existing equipment, significantly improving the environmental friendliness of the operation and the level of personnel health protection.
[0017] This utility model enables convenient assembly and disassembly of the diversion ring pipe and the fixed sleeve through a first connecting mechanism, and quick assembly and disassembly of the transparent cover and the fixed sleeve through a second connecting mechanism. At the same time, the nested design, with positioning by clips and slots and fixing by limiting ring corner blocks and bolts, allows for flexible assembly and disassembly with the pneumatic pick body. No complicated tools are required for the assembly and disassembly of each component, which can be flexibly combined according to the needs of the construction scenario. This solves the problem of fixed connection of components in traditional equipment and difficulty in combining them as needed, and improves the adaptability and work efficiency of the device to different demolition scenarios. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.
[0020] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the central part of the structure.
[0021] Figure 4 This is a schematic diagram of the overall disassembly structure of this utility model. Figure 1 .
[0022] Figure 5 This is a schematic diagram of the overall disassembly structure of this utility model. Figure 2 .
[0023] Figure 6 This is a three-dimensional structural diagram of the transparent cover of this utility model.
[0024] Figure 7 This is a schematic diagram of the nested three-dimensional structure of this utility model. Figure 1 .
[0025] Figure 8 This is a schematic diagram of the nested three-dimensional structure of this utility model. Figure 2 .
[0026] Figure 9 This is a schematic diagram of the three-dimensional structure of the diversion ring pipe of this utility model.
[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the limiting ring of this utility model.
[0028] The attached diagram is labeled as follows: 1. Pneumatic pick body; 2. Nesting; 3. Abutment ring; 4. Fixing sleeve; 5. Diverter ring pipe; 6. Transparent cover; 701. Embedded hole; 702. Support rod; 703. Positioning ring; 704. Internal threaded positioning sleeve; 801. Threaded groove; 802. Threaded ring; 803. Mounting ring; 9. Atomizing nozzle; 10. Locking strip; 11. Locking groove; 12. Groove; 13. Limiting ring; 14. Corner block; 15. Water inlet pipe; 16. Perforation; 17. Handle. Detailed Implementation
[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0030] Refer to the instruction manual appendix Figures 1 to 10 A concrete demolition construction device includes a pneumatic hammer body 1. A nest 2 is movably sleeved on the outside of the pneumatic hammer body 1. An abutment ring 3 is provided on the upper side of the nest 2. The abutment ring 3 is fixedly connected to the outside of the pneumatic hammer body 1. A fixing sleeve 4 is fixedly connected to the upper part of the outer side of the nest 2. A diversion ring pipe 5 and a transparent cover 6 are provided on the lower side of the fixing sleeve 4. The diversion ring pipe 5 is located inside the transparent cover 6, and multiple atomizing nozzles 9 and a water inlet pipe 15 are fixedly connected to the bottom of the diversion ring pipe 5. A first connecting mechanism is provided between the fixing sleeve 4 and the diversion ring pipe 5. The first connecting mechanism is used for the disassembly and assembly of the diversion ring pipe 5 on the fixing sleeve 4. A second connecting mechanism is provided between the fixing sleeve 4 and the transparent cover 6. The second connecting mechanism is used for the disassembly and assembly of the transparent cover 6 on the fixing sleeve 4.
[0031] It should be noted that the nest 2 is movably sleeved on the outside of the jackhammer body 1, and the axial initial limiting is achieved by the abutment ring 3. The fixed sleeve 4 is fixed on the upper part of the outside of the nest 2 as a key connecting carrier. The diversion ring pipe 5 and the transparent cover 6 are simultaneously assembled on its lower side, and the diversion ring pipe 5 is located inside the transparent cover 6, ensuring that the atomizing nozzle 9 and the water pipe 15 at the bottom of the diversion ring pipe 5 can accurately act on the working area. At the same time, the diversion ring pipe 5, the transparent cover 6 and the fixed sleeve 4 can be independently disassembled and assembled by the connecting mechanism one and the connecting mechanism two, respectively.
[0032] It is worth noting that the design of the diversion ring pipe 5 located inside the transparent cover 6 is to ensure that the spray range of the atomizing nozzle 9 at the bottom of the diversion ring pipe 5 completely covers the work point and is not blocked by the transparent cover 6; at the same time, the connecting mechanisms one and two must operate independently to avoid mutual interference that would prevent a certain component from being disassembled or installed separately.
[0033] Refer to the instruction manual appendix Figure 3 The connecting mechanism includes a plug-in component and a locking component. The plug-in component and the locking component are connected to each other between the fixed sleeve 4 and the diversion ring pipe 5. The plug-in component is used to plug the diversion ring pipe 5 into the fixed sleeve 4, and the locking component is used to fix the position of the plug-in component.
[0034] It should be noted that the connection mechanism consists of a plug-in component and a locking component. The two work together between the fixed sleeve 4 and the diversion ring tube 5. The plug-in component is responsible for quickly aligning the installation position of the diversion ring tube 5 and the fixed sleeve 4, while the locking component reinforces the structure after plugging in, preventing the diversion ring tube 5 from loosening due to the vibration of the pneumatic hammer body 1 during operation, thus balancing the convenience of disassembly and assembly with structural stability.
[0035] Refer to the instruction manual appendix Figure 3 , Figure 7 and Figure 8 The plug-in assembly includes multiple insertion holes 701 that are opened through the fixed sleeve 4 and a support rod 702 that is inserted through each insertion hole 701. The lower end of each support rod 702 is fixedly connected to the diversion ring pipe 5.
[0036] It should be noted that the plug-in assembly adopts a corresponding design of "embedded hole 701 + support rod 702". The embedded hole 701 is opened through the fixed sleeve 4. The lower end of the support rod 702 is fixed to the diversion ring tube 5, and the upper end is inserted through the embedded hole 701. The initial positioning of the diversion ring tube 5 can be completed directly through the cooperation of the two. The structure is simple and the positioning accuracy is high, which lays the foundation for the subsequent locking steps.
[0037] Refer to the instruction manual appendix Figure 3 , Figure 7 and Figure 8The locking assembly includes a positioning ring 703 fixed to the outer side of the middle part of the support rod 702 and an internally threaded positioning sleeve 704 threaded to the outer side of the top of the support rod 702. The top of the support rod 702 is provided with a thread that is adapted to the internally threaded positioning sleeve 704.
[0038] It should be noted that the locking assembly achieves bidirectional limiting through "positioning ring 703 + internal thread positioning sleeve 704". The positioning ring 703 is fixed to the outer side of the middle part of the support rod 702 and can abut against the bottom of the fixing sleeve 4 to form the lower limit. The internal thread positioning sleeve 704 is threaded to the top of the support rod 702 and, after being tightened, abuts against the top of the fixing sleeve 4 to form the upper limit. The support rod 702 is firmly fixed by the upper and lower clamps to prevent axial displacement of the diversion ring tube 5.
[0039] Refer to the instruction manual appendix Figure 6 and Figure 8 The second connecting mechanism includes a threaded groove 801 opened on the outer side of the bottom of the fixed sleeve 4, a threaded ring 802 threadedly connected in the threaded groove 801, and a mounting ring 803 fixedly connected to the bottom of the threaded ring 802. The mounting ring 803 is fixedly connected to the transparent cover 6.
[0040] It should be noted that the second connecting mechanism adopts a threaded connection structure. The threaded groove 801 is opened on the outer side of the bottom of the fixed sleeve 4. The threaded ring 802 is adapted to the threaded groove 801. The mounting ring 803 fixes the threaded ring 802 to the transparent cover 6. The transparent cover 6 can be disassembled and assembled simply by rotating the threaded ring 802. Moreover, the threaded connection has good sealing performance, which can reduce dust leakage from the connection.
[0041] Refer to the instruction manual appendix Figure 4 The outer side of the pneumatic pick body 1 is fixedly connected with multiple clips 10, and the inner side of the nest 2 is provided with multiple slots 11 for the clips 10 to be inserted.
[0042] It should be noted that the circumferential rotation is restricted by the "strip 10 + slot 11". The strip 10 is fixed to the outside of the jackhammer body 1, and the slot 11 is opened on the inside of the nest 2. After the two are interlocked, the nest 2 cannot rotate around the jackhammer body 1, ensuring that the position of subsequent components such as the fixing sleeve 4 and the transparent cover 6 is stable after installation.
[0043] It is worth noting that there should be no obvious gap after the locking strip 10 and the locking slot 11 are engaged. If the gap is too large, the nest 2 may still rotate slightly around the jackhammer body 1, causing the subsequent fixed sleeve 4, transparent cover 6 and other components to shift, affecting the operation accuracy.
[0044] Refer to the instruction manual appendix Figure 4 and Figure 10The lower outer side of the jackhammer body 1 has a groove 12. A limit ring 13 is rotatably connected inside the groove 12. Multiple corner blocks 14 with the same cross section and distribution as the clip 10 are fixedly connected to the outer side of the limit ring 13. Each corner block 14 is fixed to the nest 2 by bolts.
[0045] It should be noted that the axial fixation of the nest 2 is achieved by "groove 12 + limiting ring 13 + corner block 14". The groove 12 is opened on the lower outer side of the jackhammer body 1. The limiting ring 13 rotates in the groove 12. The corner block 14 is fixed on the outside of the limiting ring 13 and is consistent with the cross section and distribution of the clip 10. After rotating the limiting ring 13 to align the corner block 14 with the nest 2, the corner block 14 and the nest 2 are fixed with bolts to prevent the nest 2 from sliding up and down along the jackhammer body 1.
[0046] Refer to the instruction manual appendix Figure 6 and Figure 7 The outer side of the transparent cover 6 has multiple perforations 16, and two opposing handles 17 are fixedly connected to the outer side of the transparent cover 6.
[0047] It should be noted that multiple perforations 16 pass through the transparent cover 6 to allow external water pipes to pass through and connect to the internal water inlet pipe 15 for water supply. Two opposing handles 17 are fixed to the outside of the transparent cover 6 to facilitate the operator in adjusting the position of the transparent cover 6.
[0048] Working principle:
[0049] 1. Assembly of the pneumatic pick body 1 and the nest 2
[0050] First, align the slot 11 on the inner side of the nest 2 with the locking strip 10 on the outer side of the jackhammer body 1, and insert it into the jackhammer body 1 along the axial direction until the upper side of the nest 2 abuts against the abutment ring 3 fixed on the outer side of the jackhammer body 1, completing the initial positioning; then rotate the limiting ring 13 in the lower groove 12 on the outer side of the jackhammer body 1, so that the corner block 14 on the outer side of the limiting ring 13 aligns with the bottom of the nest 2, and fix the corner block 14 to the nest 2 with bolts to prevent the nest 2 from sliding up and down or rotating circumferentially along the jackhammer body 1.
[0051] 2. Assembly of the fixed sleeve 4 and the diversion ring pipe 5
[0052] Since the fixed sleeve 4 has been pre-fixed on the upper outer side of the nest 2, the diversion ring tube 5 is installed directly: the multiple support rods 702 fixed at the top of the diversion ring tube 5 are inserted into the through-holes 701 on the fixed sleeve 4 until the positioning ring 703 in the middle of the support rod 702 abuts against the bottom of the fixed sleeve 4; then the internal thread positioning sleeve 704 is screwed into the threaded section at the top of the support rod 702 until the internal thread positioning sleeve 704 abuts against the top of the fixed sleeve 4, and the diversion ring tube 5 is firmly fixed to the lower side of the fixed sleeve 4 by the "upper and lower limit".
[0053] 3. Assembly of the transparent cover 6 and connection with the water pipe.
[0054] Pick up the transparent cover 6 with handle 17, align the mounting ring 803 and threaded ring 802 fixed at the top with the threaded groove 801 on the outer side of the bottom of the fixing sleeve 4, rotate the threaded ring 802 to tighten it with the threaded groove 801, and complete the assembly of the transparent cover 6 (at this time, the diversion ring pipe 5 is located inside the transparent cover 6); finally, pass the external water supply pipe through the perforation 16 on the transparent cover 6 and connect it to the water inlet pipe 15 on the diversion ring pipe 5 to ensure that the water supply path is unobstructed.
[0055] During actual operation, the transparent cover 6 can directly cover the work site, physically blocking concrete debris from splashing and limiting the spread of most dust. The transparent material also ensures that operators can clearly observe the work site. At the same time, the external water supply pipe passes through the perforation 16 of the transparent cover 6 and connects to the water inlet pipe 15. The water flows through the diversion ring pipe 5 and is sprayed out from multiple atomizing nozzles 9 to form an atomized water curtain, which adsorbs fine dust inside the cover to further reduce dust. This achieves dual protection of "covering + dust reduction", ensuring safe, environmentally friendly and efficient completion of concrete demolition.
[0056] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A concrete demolition construction device, characterized in that: The device includes a pneumatic pick body (1), a nest (2) is movably sleeved on the outside of the pneumatic pick body (1), an abutment ring (3) is provided on the upper side of the nest (2), the abutment ring (3) is fixedly connected to the outside of the pneumatic pick body (1), a fixed sleeve (4) is fixedly connected to the upper part of the outside of the nest (2), a diversion ring pipe (5) and a transparent cover (6) are provided on the lower side of the fixed sleeve (4), the diversion ring pipe (5) is located inside the transparent cover (6), and multiple atomizing nozzles (9) and a water inlet pipe (15) are fixedly connected to the bottom of the diversion ring pipe (5). A first connecting mechanism is provided between the fixed sleeve (4) and the diversion ring pipe (5), the first connecting mechanism is used for the disassembly and assembly of the diversion ring pipe (5) on the fixed sleeve (4), and a second connecting mechanism is provided between the fixed sleeve (4) and the transparent cover (6), the second connecting mechanism is used for the disassembly and assembly of the transparent cover (6) on the fixed sleeve (4).
2. The concrete demolition construction device according to claim 1, characterized in that: The connection mechanism includes a plug-in component and a locking component. The plug-in component and the locking component are connected to each other between the fixed sleeve (4) and the diversion ring pipe (5). The plug-in component is used to plug the diversion ring pipe (5) into the fixed sleeve (4), and the locking component is used to fix the position of the plug-in component.
3. The concrete demolition construction device according to claim 2, characterized in that: The plug-in assembly includes multiple insertion holes (701) through which the fixed sleeve (4) is opened and a support rod (702) through which each insertion hole (701) is inserted. The lower end of each support rod (702) is fixedly connected to the diversion ring pipe (5).
4. The concrete demolition construction device according to claim 3, characterized in that: The locking assembly includes a positioning ring (703) fixed to the outer side of the middle part of the support rod (702) and an internal thread positioning sleeve (704) threaded to the outer side of the top of the support rod (702). The top of the support rod (702) is provided with a thread that is adapted to the internal thread positioning sleeve (704).
5. The concrete demolition construction device according to claim 1, characterized in that: The second connecting mechanism includes a threaded groove (801) opened on the outer side of the bottom of the fixed sleeve (4), a threaded ring (802) threaded in the threaded groove (801), and a mounting ring (803) fixedly connected to the bottom of the threaded ring (802). The mounting ring (803) and the transparent cover (6) are fixedly connected.
6. The concrete demolition construction device according to claim 1, characterized in that: The outer side of the pneumatic pick body (1) is fixedly connected with multiple clips (10), and the inner side of the nest (2) is provided with multiple slots (11) for the clips (10) to be inserted.
7. The concrete demolition construction device according to claim 6, characterized in that: The lower outer side of the jackhammer body (1) has a groove (12) and a limit ring (13) is rotatably connected inside the groove (12). Multiple corner blocks (14) with the same cross section and distribution as the clip (10) are fixedly connected to the outside of the limit ring (13). Each corner block (14) is fixed to the nest (2) by bolts.
8. The concrete demolition construction device according to claim 1, characterized in that: Multiple perforations (16) are provided through the outer side of the transparent cover (6), and two opposing handles (17) are fixedly connected to the outer side of the transparent cover (6).