Handheld electric forcible entry tool

Abstract

The utility model discloses a handheld electric forcible entry tool which comprises a drill bit body, a fixed block is fixedly connected to the side face of the drill bit body, a movable sleeve is fixedly connected to the side face of the fixed block, a movable rod is movably connected to the side face of the movable sleeve, and a spring is arranged on the outer side of the movable rod in a sleeved mode. And the other side of the movable rod is rotationally connected with an abutting head through a hinge, the side face of the abutting head is fixedly connected with a cushioning layer, and the outer side of the cushioning layer is fixedly connected with an anti-skid layer. According to the utility model, the movable sleeve and the fixed block form a floatable supporting structure, and the spring is pressed to generate an axial compression stroke of 15-25mm, so that impact energy can be effectively absorbed. Meanwhile, the cushioning layer with the thickness of 8 mm on the abutting head is made of the silica gel damping material with the shore hardness of 35 A, the cushioning effect is further enhanced, and the effective value of the vibration acceleration transmitted to the operation end is reduced to 3.2 m / s < 2 > from 8.5 m / s < 2 >. Due to the remarkable vibration reduction effect, resonance of vibration of the hands of an operator and the tool is avoided, and the holding stability is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of demolition equipment technology, specifically a handheld electric demolition tool. Background Technology

[0002] Electric demolition tools are electrically driven tools used for breaking down obstacles, characterized by high efficiency, environmental friendliness, and safety. They typically consist of an electric motor, a transmission mechanism, a demolition head, and a control circuit. The electric motor provides power, which is transmitted to the demolition head via the transmission mechanism, enabling cutting, expanding, and shearing actions on the object. The control circuit controls the tool's start, stop, and adjusts its working speed. Electric demolition tools are widely used in fire rescue, disaster relief, traffic accident rescue, and industrial demolition, quickly and effectively breaking down various obstacles, buying time for rescue operations and ensuring the safety of people and property. Common electric demolition tools include electric shears, electric spreaders, and electric cutting saws; different types of tools are suitable for different demolition scenarios and objects.

[0003] When existing electric demolition tools drill and break through walls, the high-frequency vibration generated by the high-speed operation of the motor is transmitted to the operating handle through the transmission device. This causes a resonance effect between the operator's hand muscles and the vibration frequency of the tool. This physical feedback not only reduces the stability of the grip, but also causes the drill bit positioning accuracy to deviate by more than ±5mm. After 30 minutes of continuous operation, the operator's hand fatigue increases by 60%, which directly leads to a 25% increase in drilling time per drill and a decrease in the hole position qualification rate to 78%. Utility Model Content

[0004] The purpose of this utility model is to provide a handheld electric demolition tool in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a handheld electric demolition tool, comprising: a drill bit body, a fixed block fixedly connected to the side of the drill bit body, a movable sleeve fixedly connected to the side of the fixed block, a movable rod movably connected to the side of the movable sleeve, a spring sleeved on the outside of the movable rod, a stop connected to the other side of the movable rod via a hinge, a shock-absorbing layer fixedly connected to the side of the stop, and an anti-slip layer fixedly connected to the outside of the shock-absorbing layer.

[0006] As a further improvement of this utility model: a slot is provided on the side of the fixing block, a threaded groove is provided inside the slot, a stable grip is installed at one end of the slot, a threaded mounting head is fixed to the side of the stable grip, and anti-slip texture is provided on the outer side of the stable grip.

[0007] As a further embodiment of this utility model: a drill bit is installed at one end of the drill bit body, and a drill rod mounting head is installed on the side of the drill bit.

[0008] As a further improvement of this utility model: a handle is fixedly connected to the lower part of the drill bit body, a battery compartment is fixedly connected to the lower part of the handle, and heat dissipation plates are installed on both sides of the drill bit body.

[0009] As a further embodiment of this utility model: the number of the fixed block, the movable sleeve, the movable rod, the spring, the abutment, the shock-absorbing layer and the anti-slip layer are all provided in two sets, symmetrically arranged on both sides of the drill bit body.

[0010] As a further improvement of this utility model: two sets of both the slot and the threaded groove are provided, and the slot is adapted to the stable grip, and the threaded groove is adapted to the thread of the threaded mounting head.

[0011] As a further improvement of this utility model, the drill rod mounting head is of the same size as the replaceable drill rods available on the market.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention employs a dynamic buffer system comprised of a movable rod, a movable sleeve, a spring, a stop, and a shock-absorbing layer, symmetrically arranged on both sides of the tool. When the drill bit contacts the wall for demolition, the movable rod, through the movable sleeve, forms a floating support structure with the fixed block. The spring, under pressure, generates an axial compression stroke of 15-25mm, effectively absorbing impact energy. Simultaneously, the 8mm thick shock-absorbing layer on the stop, made of silicone damping material with a Shore hardness of 35A, further enhances the buffering effect, reducing the effective value of the vibration acceleration transmitted to the operating end from 8.5m / s². 2 Reduced to 3.2 m / s 2 This significant vibration reduction effect avoids resonance between the operator's hand and the tool, greatly improving grip stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a handheld electric demolition tool described in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the butt in a handheld electric demolition tool described in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the stable grip in a handheld electric demolition tool described in this utility model;

[0017] Figure 4This is a side view of the handheld electric demolition tool described in this utility model.

[0018] In the diagram: 1. Drill bit body; 2. Fixing block; 3. Movable sleeve; 4. Movable rod; 5. Spring; 6. Butt; 7. Shock-absorbing layer; 8. Anti-slip layer; 9. Slot; 10. Threaded groove; 11. Stable grip; 12. Threaded mounting head; 13. Anti-slip texture; 14. Drill bit; 15. Drill rod mounting head; 16. Handle; 17. Battery compartment; 18. Heat sink. Detailed Implementation

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

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0021] Reference Figures 1 to 4In this embodiment of the utility model, a handheld electric demolition tool includes: a drill bit body 1, a fixing block 2 fixedly connected to the side of the drill bit body 1, a movable sleeve 3 fixedly connected to the side of the fixing block 2, a movable rod 4 movably connected to the side of the movable sleeve 3, a spring 5 sleeved on the outside of the movable rod 4, and a stop 6 rotatably connected to the other side of the movable rod 4 via a hinge. A shock-absorbing layer 7 is fixedly connected to the side of the stop 6. Two sets of the fixing block 2, movable sleeve 3, movable rod 4, spring 5, stop 6, shock-absorbing layer 7, and anti-slip layer 8 are symmetrically arranged on both sides of the drill bit body 1. An anti-slip layer 8 is fixedly connected to the outside of the shock-absorbing layer 7. When the tool is working, the lithium-ion battery pack in the battery compartment 17 powers the high-speed motor inside the drill bit body 1, driving the drill rod mounting head 15 to rotate the standard-sized drill bit 14 at a speed of 3000-5000 rpm. When drill bit 14 contacts the wall, the symmetrically arranged movable rods 4 on both sides form a floating support structure with the fixed block 2 through the movable sleeve 3. The spring 5 is compressed to generate an axial compression stroke of 15-25mm to absorb the impact energy. In conjunction with the 8mm thick damping layer 7 on the butt head 6, which is made of silicone damping material with a Shore hardness of 35A, the effective value of the vibration acceleration transmitted to the operating end is reduced from 8.5m / s². 2 Reduced to 3.2 m / s 2 .

[0022] The fixing block 2 has a slot 9 on its side, and a threaded groove 10 inside the slot 9. A stabilizing grip 11 is installed at one end of the slot 9, and a threaded mounting head 12 is fixed to the side of the stabilizing grip 11. There are two sets of both the slot 9 and the threaded groove 10. The slot 9 is compatible with the stabilizing grip 11, and the threaded groove 10 is threadedly compatible with the threaded mounting head 12. The outer side of the stabilizing grip 11 has anti-slip texture 13. The stabilizing grip 11 is installed by rotating ±180° with the slot 9 of the fixing block 2 through the threaded mounting head 12. The anti-slip texture 13 on its outer side and the diamond-shaped anti-slip layer 8 on the outer surface of the shock-absorbing layer 7 form a grip torque of 0.8 N·m. Together with the ergonomically designed handle 16, it forms a triangular support grip system, so that the drilling positioning accuracy reaches ±2 mm.

[0023] A drill bit 14 is mounted on one end of the drill bit body 1, and a drill rod mounting head 15 is mounted on the side of the drill bit 14. The drill rod mounting head 15 is the same size as commercially available replaceable drill rods. A handle 16 is fixedly attached to the bottom of the drill bit body 1, and a battery compartment 17 is fixedly attached to the bottom of the handle 16. Heat sinks 18 are mounted on both sides of the drill bit body 1. The heat sinks 18 adopt a finned aluminum alloy structure with a spacing of 2.5mm, and together with the motor axial flow fan, can control the temperature rise during continuous operation to within 55℃. Through the synergistic effect of the dynamic buffer system and the modular grip structure, this device reduces fatigue by 42% after 30 minutes of operation compared to traditional tools, and increases single-drilling efficiency by 35%.

[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0025] The working principle of this utility model is as follows: Carefully inspect the appearance of the drill bit body 1 for damage, confirm that the components such as the fixed block 2, movable sleeve 3, movable rod 4, spring 5, stop 6, shock-absorbing layer 7, and anti-slip layer 8 are firmly connected and undamaged, check whether the stabilizing handle 11 can be smoothly installed through the threaded mounting head 12 and the slot 9 of the fixed block 2, check the thread compatibility, select a drill bit 14 that matches the size of the drill rod mounting head 15 from the market according to the needs of the demolition operation, and install it on one end of the drill bit body 1. Align the threaded mounting head 12 of the stabilizing handle 11 with the thread groove 10 in the slot 9 on the side of the fixed block 2, rotate the stabilizing handle 11 to install it, and rotate the stabilizing handle 11 to a suitable angle according to the working posture and needs. To achieve ±180° rotational positioning and installation, open the battery compartment 17 and check if the lithium-ion battery pack has sufficient power. If the power is insufficient, charge it promptly. The operator holds the handle 16 and adjusts their hand position according to the principle of the triangular support grip system, so that the anti-slip texture 13 on the outer side of the stable grip 11 cooperates with the diamond-shaped anti-slip layer 8 on the outer surface of the shock-absorbing layer 7 to form a stable grip torque, ensuring stable tool grip. Turn on the switch, and the lithium-ion battery pack in the battery compartment 17 powers the high-speed motor inside the drill bit body 1, driving the drill rod mounting head 15 to rotate the drill bit 14 at a speed of 3000-5000 rpm. Align the rotating drill bit 14 with the wall or other object surface to be broken, and slowly apply pressure. The drill bit 14 is brought into contact with the wall to begin demolition. When the drill bit 14 contacts the wall, the symmetrically arranged movable rods 4 on both sides, through the floating support structure formed by the movable sleeve 3 and the fixed block 2, begin to function. The spring 5 is compressed, generating an axial compression stroke of 15-25mm, absorbing the impact energy generated during demolition. This, combined with the shock-absorbing layer 7 on the butt 6, further buffers the vibration, reducing the vibration acceleration transmitted to the operating end. During demolition, the tool position is adjusted according to actual needs using the triangular support grip system. Because this system achieves a drilling positioning accuracy of ±2mm, it allows for relatively precise control of the drilling position. During continuous operation, the heat sink 18, with its finned aluminum alloy structure with a spacing of 2.5mm, works in conjunction with... The axial flow fan of the motor dissipates the heat generated by the drill bit body 1 in a timely manner, ensuring that the temperature rise during continuous operation is controlled within 55℃, thus guaranteeing the normal operation of the equipment. During operation, the working status of each part of the tool should be checked regularly, such as the movement of the movable rod 4, the elasticity of the spring 5, and the tightness of the installation of the stabilizing handle 11. If any abnormal wear or looseness is found, it should be adjusted or replaced in time. After the demolition operation is completed, turn off the switch to stop the rotation of the drill bit 14, remove the installed drill bit 14 from the drill rod mounting head 15, and store it properly. At the same time, remove the stabilizing handle 11 from the fixing block 2, wipe the tool clean, close the battery compartment 17, and store the equipment in a dry and ventilated place for the next use.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A handheld electric demolition tool, characterized in that, include: The drill bit body (1) has a fixed block (2) fixed to its side, a movable sleeve (3) fixed to its side, a movable rod (4) movably connected to the side of the movable sleeve (3), a spring (5) sleeved on the outside of the movable rod (4), and a stop (6) rotatably connected to the other side of the movable rod (4) via a hinge, a shock-absorbing layer (7) fixed to the side of the stop (6), and an anti-slip layer (8) fixed to the outside of the shock-absorbing layer (7).

2. The handheld electric demolition tool according to claim 1, characterized in that, The fixing block (2) has a slot (9) on its side, and a threaded groove (10) is provided inside the slot (9). A stabilizing grip (11) is installed at one end of the slot (9). A threaded mounting head (12) is fixed to the side of the stabilizing grip (11). Anti-slip texture (13) is provided on the outer side of the stabilizing grip (11).

3. The handheld electric demolition tool according to claim 1, characterized in that, The drill bit body (1) has a drill bit (14) installed at one end, and a drill rod mounting head (15) is installed on the side of the drill bit (14).

4. A handheld electric demolition tool according to claim 1, characterized in that, A handle (16) is fixedly attached to the bottom of the drill bit body (1), and a battery compartment (17) is fixedly attached to the bottom of the handle (16). Heat sinks (18) are installed on both sides of the drill bit body (1).

5. A handheld electric demolition tool according to claim 1, characterized in that, The number of the fixed block (2), the movable sleeve (3), the movable rod (4), the spring (5), the abutment (6), the shock-absorbing layer (7) and the anti-slip layer (8) are all provided in two sets, and are symmetrically arranged on both sides of the drill bit body (1).

6. A handheld electric demolition tool according to claim 2, characterized in that, The number of the slots (9) and the threaded grooves (10) are both provided in two sets, and the slots (9) are adapted to the stable grip (11), and the threaded grooves (10) are adapted to the threaded mounting head (12).

7. A handheld electric demolition tool according to claim 3, characterized in that, The drill pipe mounting head (15) is the same size as commercially available replacement drill pipes.

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