A portable multi-functional fire rescue and demolition tool

Abstract

This invention relates to the field of demolition tools, specifically a portable multi-functional fire-fighting demolition tool, including a fire axe with a demolition impact cone at the top and an axe handle assembly at the bottom. In this invention, a pre-loaded impact mechanism composed of an impact slider, a main compression spring, and locking teeth achieves the coupling of energy pre-storage and instantaneous release, enabling the device to output high-intensity impact under limited operating force. Simultaneously, the differentiated design of the stop surface and the inclined guide surface ensures locking stability and triggering reliability. The adjustable position of the impact slider within the guide groove allows for adjustment of the main compression spring's compression and impact stroke as needed, thereby achieving controllable output of impact intensity and effective distance. This solves the problem of existing demolition tools having limited impact characteristics and being difficult to adapt to different operational scenarios.

Description

Technical Field

[0001] This invention relates to the field of demolition tools, specifically a portable multi-functional fire-fighting demolition tool. Background Technology

[0002] Firefighting breaching tools are essential equipment used in fire rescue operations to break down doors, windows, walls, obstacles, and create emergency exits. Common types include fire axes, crowbars, and breaching spikes. Among them, fire axes, due to their multiple functions such as chopping and prying, are widely used in various fire and rescue scenarios.

[0003] In existing technologies, traditional fire axes mostly adopt an integral rigid structure, which mainly relies on the kinetic energy generated by the operator's swing to achieve demolition operations. Such tools have a simple structure and high reliability, but they still have obvious limitations in actual use: on the one hand, in confined spaces or restricted environments (such as indoor corridors, vehicle interiors, gaps in collapsed structures, etc.), the operator has difficulty obtaining sufficient swing stroke, resulting in insufficient impact energy and a significant decrease in demolition efficiency; on the other hand, the single rigid impact method has poor adaptability when facing targets of different materials (such as brittle materials and tough materials), and it is difficult to meet multiple demolition needs such as piercing, splitting, and pressing.

[0004] To address the aforementioned issues, CN221583669U discloses a fire-fighting demolition tool that, by incorporating a spring energy storage mechanism or a catapult-type demolition structure into a fire axe, enables the tool to output instantaneous impact force within a confined space, thereby improving its demolition capabilities. However, such structures typically rely on complex built-in transmission and triggering components, resulting in not only a complex structure and limited reliability, but also difficulty in flexibly adjusting the impact stroke and output characteristics, making it challenging to adapt to the needs of different operational scenarios. Therefore, we propose a portable, multi-functional fire-fighting demolition tool. Summary of the Invention

[0005] The purpose of this invention is to provide a portable, multi-functional fire-fighting demolition tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a portable multi-functional fire-fighting demolition tool is provided, including a fire axe with a demolition impact cone at the top and an axe handle assembly connected to the bottom. The fire axe is equipped with a guide groove, and an impact slider is slidably connected in the guide groove. A main compression spring is provided between the impact slider and the bottom of the guide groove for preloading the impact slider. The side of the impact slider is provided with a locking tooth block, and the side wall of the fire axe is provided with a locking spring and a trigger handle. The locking spring is used to drive the locking tooth block to keep the impact slider locked. When the trigger handle is pressed, the locking tooth block is disengaged from the impact slider, so that the impact slider moves along the guide groove under the action of the main compression spring and drives the demolition impact cone to generate impact. The axe handle assembly includes a front handle and a rear handle, which are rotatably connected by a folding joint. The folding joint is provided with a load-bearing locking sleeve. One end of the load-bearing locking sleeve is connected to the rear handle, and the other end extends into the bottom of the front handle and is covered by it.

[0007] Furthermore: the locking spring is an elastic metal sheet, one end of which is fixed to the fire axe, and the other end is connected to or abuts against the locking tooth block.

[0008] Furthermore, the trigger handle portion is exposed on the outer wall of the fire axe.

[0009] Furthermore, the contact surface between the locking tooth block and the impact slider includes a stop surface for bearing impact loads and an inclined guide surface for guiding disengagement.

[0010] Furthermore: the front handle has protrusions on both sides of its top, and the protrusions contain inertial sliders and damping cavities.

[0011] Furthermore, the damping cavity is a closed or semi-closed structure, filled with air or a damping medium.

[0012] Furthermore: the two ends of the rear handle are provided with threaded structures, and the load-bearing lock sleeve is connected to the rear handle by threads.

[0013] Furthermore, the bottom of the boss is provided with a positioning slot, which is used to limit the position of the load-bearing locking sleeve in the folded state.

[0014] Furthermore, the impact slider and the guide groove are in a clearance fit or a low-friction sliding fit.

[0015] Furthermore: the inner wall dimension of the load-bearing locking sleeve is not less than the dimension of the folding joint, and the load-bearing locking sleeve forms a covering structure for the folding joint in the unfolded state.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the preloaded impact mechanism, consisting of an impact slider, a main compression spring, and a locking tooth block, achieves the coupling of energy pre-storage and instantaneous release, enabling the device to output high-intensity impact under limited operating force. At the same time, the division of labor between the stop surface and the inclined guide surface ensures locking stability and triggering reliability. 2. By adjusting the position of the impact slider within the guide groove, the compression of the main compression spring and the impact stroke can be adjusted according to requirements, thereby achieving controllable output of impact intensity and action distance. This solves the problem that existing demolition tools have a single impact characteristic and are difficult to adapt to different operating scenarios. 3. The load-bearing locking sleeve extends into the front handle to form a covering fit and externally constrains the folding joint, so that the impact load is transmitted between the front handle and the load-bearing locking sleeve in the form of surface contact, avoiding the load concentration in the thread and joint parts. At the same time, the inertial slider and damping cavity are combined to delay the impact process, which improves the demolition efficiency and usage stability while ensuring structural strength. Attached Figure Description

[0017] Figure 1 This is a schematic elevation view of a portable multi-functional fire-fighting demolition tool according to the present invention; Figure 2 This is a schematic diagram of the structure of a portable multi-functional fire-fighting demolition tool according to the present invention; Figure 3 This is a schematic diagram of the folded state of a portable multi-functional fire-fighting demolition tool according to the present invention; Figure 4 For the present invention Figure 2 Enlarged view of a portion of the image; Figure 5 This is a bottom-view schematic diagram of the present invention.

[0018] In the diagram: 1. Fire axe; 2. Demolition impact cone; 3. Axe handle assembly; 4. Guide groove; 5. Impact slider; 6. Main compression spring; 7. Locking tooth block; 8. Locking spring; 9. Trigger handle; 10. Front handle; 11. Rear handle; 12. Folding joint shaft; 13. Load-bearing lock sleeve; 14. Boss; 15. Inertia slider; 16. Damping cavity; 17. Positioning slot. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-5 The figure shows a preferred embodiment of the present invention, a portable multi-functional fire demolition tool, including a fire axe 1, which is provided with a demolition impact cone 2 at the top and an axe handle assembly 3 at the bottom; The fire axe 1 is equipped with a guide groove 4, and an impact slider 5 is slidably connected in the guide groove 4. A main compression spring 6 is provided between the impact slider 5 and the bottom of the guide groove 4 for preloading the impact slider 5. The side of the impact slider 5 is provided with a locking tooth block 7, and the side wall of the fire axe 1 is provided with a locking spring 8 and a trigger handle 9. The locking spring 8 is used to drive the locking tooth block 7 to keep the impact slider 5 locked. When the trigger handle 9 is pressed, the locking tooth block 7 is disengaged from the impact slider 5, so that the impact slider 5 moves along the guide groove 4 under the action of the main compression spring 6 and drives the demolition impact cone 2 to generate impact. The axe handle assembly 3 includes a front handle 10 and a rear handle 11, which are rotatably connected by a folding joint 12. The folding joint 12 is provided with a load-bearing locking sleeve 13. One end of the load-bearing locking sleeve 13 is connected to the rear handle 11, and the other end extends into the bottom of the front handle 10 and is covered by it.

[0021] Specifically, the locking spring 8 is an elastic metal sheet, one end of which is fixed to the fire axe 1, and the other end is connected to or abuts against the locking tooth block 7; it is used to provide a continuous elastic preload to the locking tooth block 7, so that it is stably pressed against the side of the impact slider 5 in the non-triggered state, thereby ensuring the locking reliability of the impact slider 5 and realizing automatic reset.

[0022] In addition, the trigger handle 9 is partially exposed on the outer wall of the fire axe 1; it is used to drive the locking tooth block 7 to overcome the elastic force of the locking spring 8 under the action of external force, so that the locking tooth block 7 is disengaged from the impact slider 5, thereby realizing the manual controllable release of the impact mechanism.

[0023] The contact surface between the locking tooth block 7 and the impact slider 5 includes a stop surface for bearing the impact load and an inclined guide surface for guiding the release. Both the stop surface and the inclined guide surface are provided with inclined and parallel inclined baffles to limit the displacement of the impact slider. The stop surface is used to bear the impact load released by the main compression spring 6, and the inclined guide surface is used to guide the locking tooth block 7 to smoothly release from the impact slider 5 under the action of the trigger handle 9, thereby realizing the separation of the load-bearing function and the unlocking function.

[0024] Meanwhile, the front handle 10 has protrusions 14 on both sides of the top, and the protrusions 14 have an inertial slider 15 and a damping cavity 16. During the impact process, the inertial slider 15 generates an inertial lag motion relative to the front handle 10 and is restricted in motion within the damping cavity 16, thereby delaying the impact process.

[0025] In addition, the damping cavity 16 is a closed or semi-closed structure, filled with air or a damping medium; it is used to provide damping resistance during the movement of the inertial slider 15, reduce the peak impact and prolong the action time.

[0026] Specifically, the two ends of the rear handle 11 are provided with threaded structures, and the load-bearing locking sleeve 13 is connected to the rear handle 11 by threads; it can axially lock the front handle 10 and the rear handle 11 in the unfolded state and provide structural preload.

[0027] Understandably, the bottom of the boss 14 is provided with a positioning slot 17, which is used to limit the position of the load-bearing lock sleeve 13 in the folded state; one end of the load-bearing lock sleeve 13 can be screwed into the positioning slot 17, and the other end can be fixed to the rear handle 11. The positioning slot 17 is used to limit the position of the load-bearing lock sleeve 13 in the folded state, so that the rear handle 11 is stably fixed in the storage state, preventing it from shaking or falling off.

[0028] The impact slider 5 and the guide groove 4 are fitted with a clearance or a low-friction sliding fit to reduce motion resistance and improve the response speed and energy output efficiency of the impact slider 5 when the main compression spring 6 is released.

[0029] In addition, the inner wall dimension of the load-bearing locking sleeve 13 is not less than the dimension of the folding joint 12. When the load-bearing locking sleeve 13 is unfolded, it forms a covering structure for the folding joint 12. The outer wall of the load-bearing locking sleeve 13 fits snugly with the inner wall of the front handle 10 and the outer wall of the rear handle 11 to withstand impact loads, thereby limiting the relative rotation of the front handle 10 and the rear handle 11 and forming an external constraint support.

[0030] In this embodiment, during use, the load-bearing locking sleeve 13 is first screwed onto the rear handle 11, with its upper end extending into the bottom of the front handle 10. The front handle 10 forms a covering structure for the load-bearing locking sleeve 13. In the unfolded state, the outer wall of the load-bearing locking sleeve 13 and the inner wall of the front handle 10 form a circumferential contact fit, thereby forming a surface contact load-bearing path under axial impact load, so that the impact force is transmitted from the front handle 10 through the load-bearing locking sleeve 13 to the rear handle 11, avoiding the load concentration on the folding joint 12 and the threaded connection part.

[0031] Before the demolition operation, the demolition impact cone 2 and the impact slider 5 are compressed inward along the guide groove 4 by external force, causing the main compression spring 6 to store energy. Under the action of the locking spring 8, the locking tooth block 7 forms a stop with the impact slider 5, achieving the locking state. The contact surface between the locking tooth block 7 and the impact slider 5 includes a stop surface for bearing the impact load and an inclined guide surface for guiding the release. Inclined and parallel inclined baffles are arranged on both the stop surface and the inclined guide surface to limit the position of the impact slider 5 and enhance contact stability. The stop surface is used to bear the impact load released by the main compression spring 6, and the inclined guide surface is used to guide the locking tooth block 7 to smoothly release from the impact slider 5 under the action of the trigger handle 9, thereby realizing the separation of the load-bearing function and the unlocking function.

[0032] When the trigger lever 9 is pressed to disengage the locking tooth block 7 from the impact slider 5, the impact slider 5 is in a freely movable state within the guide groove 4. The operator can adjust the initial position of the impact slider 5 in the guide groove 4 according to the actual operation requirements, thereby changing the compression amount of the main compression spring 6 and the effective stroke of the impact slider 5. After being locked again, when the impact slider 5 is released at different initial positions, it will generate different impact strokes and impact energy outputs, realizing the adjustability of impact intensity and action distance, thereby adapting to the needs of different demolition objects and working spaces.

[0033] When an impact is required, press the trigger handle 9 to disengage the locking tooth block 7 from the impact slider 5. Under the action of the main compression spring 6, the impact slider 5 moves rapidly along the guide groove 4, driving the demolition impact cone 2 to punch outward and generate an instantaneous impact force on the target structure.

[0034] During the demolition process, the inertial slider 15 located in the boss 14 of the front handle 10 lags behind the front handle 10 under the action of inertia and is damped in the damping cavity 16, thereby delaying the impact process and changing the impact output from a single pulse to a composite impact with time extension characteristics. This improves the efficiency of destroying the target structure and reduces the instantaneous impact peak of the structure.

[0035] After completing the task, the load-bearing lock sleeve 13 can be unscrewed, allowing the front handle 10 and the rear handle 11 to rotate and fold around the folding joint 12. The rear handle 11 is then fixed in place by the positioning slot 17, thus achieving portable storage.

[0036] Finally, it should be noted that, in order to facilitate a clear demonstration and understanding of the structure of the present invention, the accompanying drawings are not drawn to scale. The drawings may contain enlarged, reduced, or distorted representations of specific components, spacing, or angles. Those skilled in the art should understand that, in actual production or manufacturing, the dimensions, tolerances, and proportional relationships described in this text shall prevail. In the description of the present invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0038] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A portable, multi-functional fire-fighting demolition tool, characterized in that, include: A fire axe (1) with a demolition impact cone (2) at the top and an axe handle assembly (3) at the bottom; The fire axe (1) is provided with a guide groove (4), and an impact slider (5) is slidably connected in the guide groove (4). A main compression spring (6) is provided between the impact slider (5) and the bottom of the guide groove (4) for preloading the impact slider (5). The side of the impact slider (5) is provided with a locking tooth block (7), and the side wall of the fire axe (1) is provided with a locking spring (8) and a trigger handle (9). The locking spring (8) is used to drive the locking tooth block (7) to keep the impact slider (5) locked. When the trigger handle (9) is pressed, the locking tooth block (7) is disengaged from the impact slider (5), so that the impact slider (5) moves along the guide groove (4) under the action of the main compression spring (6) and drives the demolition impact cone (2) to generate impact. The axe handle assembly (3) includes a front handle (10) and a rear handle (11), the front handle (10) and the rear handle (11) being rotatably connected by a folding joint (12); The folding joint (12) is provided with a load-bearing lock sleeve (13). One end of the load-bearing lock sleeve (13) is connected to the rear handle (11), and the other end extends into the bottom of the front handle (10) and is covered by it.

2. The portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The locking spring (8) is an elastic metal sheet, one end of which is fixed to the fire axe (1), and the other end is connected to or abuts against the locking tooth block (7).

3. The portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The trigger handle (9) is partially exposed on the outer wall of the fire axe (1).

4. The portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The contact surface between the locking tooth block (7) and the impact slider (5) includes a stop surface for bearing impact loads and an inclined guide surface for guiding separation.

5. A portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The front handle (10) has protrusions (14) on both sides of its top, and the protrusions (14) have an inertial slider (15) and a damping cavity (16).

6. A portable multi-functional fire-fighting demolition tool according to claim 5, characterized in that: The damping cavity (16) is a closed or semi-closed structure, filled with air or damping medium.

7. A portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The rear handle (11) has threaded structures at both ends, and the load-bearing lock sleeve (13) is connected to the rear handle (11) by threads.

8. A portable multi-functional fire-fighting demolition tool according to claim 5, characterized in that: The bottom of the boss (14) is provided with a positioning slot (17) for limiting the position of the load-bearing lock sleeve (13) in the folded state.

9. A portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The impact slider (5) and the guide groove (4) are in a clearance fit or a low-friction sliding fit.

10. A portable multi-functional fire-fighting demolition tool according to claim 1, characterized in that: The inner wall dimension of the load-bearing lock sleeve (13) is not lower than the dimension of the folding joint (12), and the load-bearing lock sleeve (13) forms a covering structure for the folding joint (12) in the unfolded state.

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