Impact-resistant lithium battery impact rammer

Abstract

The application discloses an impact-resistant lithium battery impact rammer, which comprises a rack body, a ram plate and a driving motor are assembled on the rack body, and a mounting bracket is installed on the top of the rack body. The application forms continuous and uniform flexible constraint on the side of the battery through the buffer, when the equipment works, the impact and vibration energy is absorbed and dissipated by the elastic deformation of the buffer, effectively blocking the direct transmission of high-frequency vibration to the battery, significantly reducing the performance attenuation and damage risk of the battery caused by long-term mechanical stress, and prolonging the service life of the battery. After the battery is installed, the clamping of the supporting leg and the clamping section realizes the axial firm locking, and the buffer simultaneously keeps the elastic compression of the side of the battery, the axial locking and the lateral buffering cooperate, and constitute the stable constraint of the battery in multiple degrees of freedom, which fundamentally eliminates the safety hidden danger of accidental loosening.

Description

Technical Field

[0001] This invention relates to the field of impact rammer technology, and more particularly to an impact-resistant lithium-ion battery impact rammer. Background Technology

[0002] As an important foundation compaction equipment, the impact rammer compacts compact soil or pavement materials through high-frequency impact. It is widely used in construction, road maintenance and landscaping. The working principle of the lithium battery impact rammer is that the lithium battery is used as an energy source to drive the DC motor, which drives the eccentric impact block to compact the ground. The lithium battery is not a disposable battery, but a rechargeable battery, which needs to be removed and charged by mains power frequently.

[0003] Currently, lithium-ion battery impact rammers mostly use clips, pins, or screws for battery fixing. While these structures can meet basic fixing requirements in static or low-vibration environments, they have significant shortcomings in high-vibration equipment like impact rammers: rigid locking structures lack effective buffering design, and the high-frequency vibration energy generated during impact rammer operation is directly transmitted to the battery body, which may damage the stability of the battery's internal electrode structure, leading to faster battery capacity decay and severely shortening its service life; in addition, screw locking and other methods involve cumbersome disassembly steps, and clip structures are prone to wear and deformation due to long-term vibration, leading to locking failure or disassembly difficulties, further reducing the ease of use of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides the following technical solution:

[0005] Impact-resistant lithium battery impact rammer, including:

[0006] The frame body is equipped with a tamping plate and a drive motor, and a mounting bracket is installed on the top of the frame body.

[0007] The battery mechanism includes a battery box mounted on the mounting bracket, a placement cavity opened in the battery box for accommodating the battery, and multiple sets of L-shaped movable cavities opened on the battery box and surrounding the placement cavity. A buffer member is slidably connected in the movable cavity. A switching plate is engaged with the bottom side of the buffer member by a limiting member. A spring is provided between the switching plate and the inner wall of the movable cavity. An insertion slot for inserting the battery support foot is opened on the switching plate. The insertion slot includes an inclined guide part and an engaging section communicating with it.

[0008] When installing the battery, the support leg slides along the inclined guide and drives the switching plate to compress the second spring and move in the first direction, while driving the buffer to press against the side of the battery. When the support leg slides to the position corresponding to the locking section, the switching plate moves in the second direction under the action of the second spring, driving the support leg to lock into the locking section to achieve axial locking. At the same time, the buffer is in the state of pressing the side of the battery.

[0009] When removing the battery, drive the switching plate to move in the first direction, so that the locking section is disengaged from the support leg and the locking is released. Then continue to move the switching plate so that the support leg abuts against the limiting member, control the limiting member to disengage from the buffer member, and the buffer member is reset to release the lateral pressure.

[0010] As an improvement to the above technical solution, the buffer includes a movable plate slidably disposed in the movable cavity, a connecting rod integrally formed and disposed at the bottom of the movable plate, and multiple sets of springs spaced apart along the extension direction of the movable plate. A connecting hole is provided on the side wall of the battery box for the movable cavity to communicate with the placement cavity. One end of the spring extends through the connecting hole into the placement cavity. The end of the spring extending into the placement cavity is fixedly connected to the buffer plate. The connecting rod is engaged and inserted into the switching plate by a limiting member.

[0011] As an improvement to the above technical solution, the limiting member includes:

[0012] The movable rod is slidably disposed within the switching plate and located on both sides of the connecting rod;

[0013] A movable block is movably disposed within the switching plate, and its direction of movement is perpendicular to the sliding direction of the movable rod.

[0014] A wedge-shaped portion is disposed on the movable block;

[0015] The movable rod has a groove that mates with the wedge-shaped part, and the sliding of the movable rod generates a vertical thrust on the movable block through the inclined surface of the wedge-shaped part.

[0016] As an improvement to the above technical solution, the limiting member further includes a spring three disposed between the moving rod and the switching plate for resetting the moving rod.

[0017] As an improvement to the above technical solution, the connecting rod is provided with a groove that matches the moving block, and a limiting part is fixedly provided at one end of the connecting rod located inside the switching plate.

[0018] As an improvement to the above technical solution, it also includes a mounting groove at the bottom of the battery box, in which a push rod is slidably connected, the push rod extending into the moving cavity and being fixedly connected to the switching plate.

[0019] As an improvement to the above technical solution, it also includes a through hole formed on the battery box and for the placement cavity to communicate with the moving cavity, the through hole being adapted to the support leg.

[0020] The beneficial effects of this invention are:

[0021] The buffer component forms a continuous and uniform compression constraint on the side of the battery. When the equipment is working, the impact and vibration energy is absorbed and dissipated by the elastic deformation of the buffer component, effectively blocking the direct transmission of high-frequency vibration to the battery, significantly reducing the risk of performance degradation and damage caused by long-term mechanical stress, and extending the battery life.

[0022] After the battery is installed, the engagement of its legs and the locking section achieves a firm axial lock, while the buffer simultaneously maintains elastic pressure on the side of the battery. The axial lock and the lateral buffer work together to form a stable constraint on the battery in multiple degrees of freedom, ensuring that the battery can maintain extremely high installation reliability even under continuous strong vibration conditions, fundamentally eliminating the safety hazard of accidental loosening.

[0023] Based on the linkage structure of the switching plate, limiting component and buffer component, the battery can be installed by simply pressing down to automatically complete the lateral pre-tightening and axial locking; during disassembly, the axial locking and lateral clamping can be released in sequence by a single pushing action. This structure enables fast, manual operation, which greatly improves the efficiency of battery installation and removal and optimizes the user experience in scenarios where batteries are frequently replaced. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention in state one;

[0026] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the second state structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0029] Figure 6 This is a schematic diagram of the three-state structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C.

[0031] Reference numerals: 10. Frame body; 11. Ramming plate; 12. Motor; 13. Mounting bracket; 14. Handrail; 20. Battery mechanism; 21. Battery box; 22. Placement cavity; 23. Moving cavity; 24. Moving plate; 241. Spring 1; 242. Buffer plate; 243. Connecting rod; 25. Spring 2; 26. Push rod; 27. Switching plate; 271. Inclined guide; 272. Engaging section; 273. Moving rod; 274. Moving block; 2741. Wedge-shaped part; 275. Spring 3; 276. Insertion slot; 28. Through hole; 30. Battery; 31. Support leg. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The impact-resistant lithium battery impact rammer includes: a frame body 10, on which a rammer plate 11 and a drive motor 12 are mounted, and a mounting bracket 13 is installed on the top of the frame body 10.

[0034] The battery mechanism 20 includes a battery box 21 mounted on the mounting bracket 13, a placement cavity 22 opened in the battery box 21 for accommodating the battery 30, and multiple sets of L-shaped moving cavities 23 opened on the battery box 21 and surrounding the placement cavity 22. A buffer member is slidably connected in the moving cavity 23. A switching plate 27 is engaged with the bottom side of the buffer member by a limiting member. A spring 25 is provided between the switching plate 27 and the inner wall of the moving cavity 23. An insertion slot 276 is opened on the switching plate 27 for inserting the support leg 31 of the battery 30. The insertion slot 276 includes an inclined guide part 271 and an engaging section 272 communicating with it.

[0035] When installing the battery 30, the support leg 31 slides along the inclined guide 271 and drives the switching plate 27 to compress the second spring 25 and move in the first direction. At the same time, the limiting member drives the buffer member to press against the side of the battery 30. When the support leg 31 slides to the position corresponding to the engaging section 272, the switching plate 27 resets in the second direction under the action of the second spring 25, driving the support leg 31 to engage with the engaging section 272 to achieve axial locking, and the buffer member keeps the battery pressed.

[0036] When removing the battery, drive the switching plate 27 to move in the first direction, so that the locking section 272 is disengaged from the support leg 31 and the locking is released. Then continue to move the switching plate 27 so that the support leg 31 abuts against the limiting member, control the limiting member to disengage from the buffer member, and the buffer member is reset to release the lateral pressure.

[0037] Specifically, battery 30 is electrically connected to drive motor 12, state one: battery installation trigger buffer and locking:

[0038] refer to Figure 2 as well as Figure 3 When it is necessary to install the battery 30, align the battery 30 with the placement cavity 22 of the battery box 21, so that the support foot at the bottom of the battery 30 is inserted into the insertion slot 276 of the switching plate 27. The support foot 31 of the battery 30 first contacts the inclined guide part 271 of the insertion slot 276. When sliding along the inclined surface, it generates a lateral thrust, driving the switching plate 27 to move in the first direction. During the movement of the switching plate 27, the second spring 25 is compressed. At the same time, the buffer is driven to slide along the moving cavity 23 through the limiting member. The buffer moves synchronously with the switching plate 27. One end of the buffer is gradually pressed against the side of the battery 30, initially realizing the limitation of the circumferential surface of the battery. Because the impact tamping operation will generate strong vibration and impact, the impact force is transmitted to the battery box 21 and the battery 30 inside through the frame. At this time, the locked buffer plays a core role: the impact force will try to push the battery 30 to move, and the battery 30 will press against the buffer that is in close contact with it. The buffer effectively absorbs and buffers this part of the impact energy through its own elastic deformation.

[0039] As the battery 30 continues to move downwards, the support leg 31 slides along the inclined guide 271 to the position corresponding to the engaging section 272 of the insertion slot 276. The switching plate 27 is no longer constrained by the lateral thrust of the support leg 31, the lateral thrust disappears, and the compressed spring 25 releases its elastic potential energy, driving the switching plate 27 to move in the second direction. During this movement, the switching plate 27 causes the support leg 31 of the battery 30 to engage with the engaging section 272, creating mechanical interference. The structural limitation of the engaging section 272 achieves axial locking of the battery 30, preventing the battery 30 from disengaging during impact operations. During the process, when the switching plate 27 moves in the second direction, it does not completely return to its initial position. Therefore, the buffer remains pressed against the side of the battery, and the limiting member and the buffer are locked together to prevent the buffer from shifting during operation vibration. This continuously provides lateral buffering for the battery and counteracts the impact of the vibration during the impact tamping operation on the battery. In addition, the elastic pressing method of the buffer plate 242 avoids rigid large-area contact between the battery shell and the inner wall of the placement cavity 22. The gap naturally formed between the two is conducive to air circulation, thereby improving the heat dissipation conditions of the battery during operation.

[0040] State 2; Battery Removal

[0041] refer to Figure 4 as well as Figure 5When it is necessary to remove the battery 30, the switching plate 27 is moved in the first direction by external force. At this time, the locking section 272 disengages from the support leg and the lock is released. During this movement, since the limiting member has not been triggered, the buffer member is still locked to the switching plate 27, so the lateral pressing state is temporarily maintained. This avoids the battery 30 from being released immediately after the axial lock is released, and also avoids the limiting member being triggered when the support leg 31 of the battery 30 is inserted. Therefore, it is necessary to continue to move the switching plate 27 in the first direction until the support leg 31 pushes the limiting member to move, so that the limiting member and the buffer member are disengaged. After the buffer member and the limiting member are disengaged, the buffer member moves away from the side of the battery 30 under its own restoring force, releasing the lateral pressing on the battery 30. At this time, the axial lock and the lateral buffer of the battery 30 are released, and the battery 30 can be directly taken out from the placement cavity 22 to complete the disassembly.

[0042] State 3;

[0043] refer to Figure 6 as well as Figure 7 After disassembly, the external force on the switching plate 27 is removed. Under its own restoring force, the buffer slides along the moving cavity 23 away from the battery 30 until it is blocked by the mechanical limiting structure on the side wall of the moving cavity 23. At this time, the moving plate 24 returns to its maximum limit position. At the same time, the switching plate 27 moves in the second direction under the drive of the second spring 25. At the end of this reset stroke, the limiting member on the switching plate 27 and the connecting rod 243 on the buffer realign and engage, thereby automatically restoring the locked state between the switching plate 27 and the buffer. The entire mechanism is thus completely reset and is in a stable standby state. In the installed state, the top of the mounting bracket 13 is fixedly connected to a handrail 14. During high-frequency impact operation, the whole machine generates strong vibrations. The handrail 14 is designed to provide the operator with a stable grip point, effectively suppressing equipment jumping, reducing operator fatigue, and preventing safety risks caused by loss of control. The "first direction" refers to the direction in which the switching plate 27 moves closer to the center of the battery 30 when the battery is removed; the "second direction" refers to the direction in which the switching plate 27 moves away from the center of the battery 30 under the action of the second spring 25 during the battery installation process, and the second direction is opposite to the first direction.

[0044] In one embodiment, the buffer includes a movable plate 24 slidably disposed in the movable cavity 23, a connecting rod 243 integrally formed and disposed at the bottom of the movable plate 24, and multiple sets of springs 241 spaced apart along the extension direction of the movable plate 24. A connecting hole is provided on the side wall of the battery box 21 for communicating between the movable cavity 23 and the placement cavity 22. One end of the spring 241 extends through the connecting hole into the placement cavity 22. The end of the spring 241 extending into the placement cavity 22 is fixedly connected to the buffer plate 242. The connecting rod 243 is engaged and inserted into the switching plate 27 by a limiting member.

[0045] When the battery 30 is installed, the support leg 31 drives the switching plate 27 to move via the inclined guide part 271 of the insertion slot 276. The switching plate 27 then drives the connecting rod 243 to slide along the moving cavity 23 via the limiting member, so that the entire buffer component moves closer to the battery 30. Since the connecting rod 243 is integrally formed with the moving plate 24 and located at its bottom, its engagement with the limiting member ensures reliable linkage between the switching plate 27 and the moving plate 24. As the moving plate 24 moves towards the battery 30, the multiple sets of springs 241 fixed on it drive the buffer plate 242 to directly contact the side of the battery 30. Under the continuous movement of the moving plate 24, the springs 241 are pre-compressed, and the buffer plate 242 then adheres to and presses against the outer surface of the battery 30, forming a uniformly distributed lateral constraint. During the impact tamping operation, the high-frequency vibration and impact load transmitted by the frame body 10 will cause the battery 30 to sway slightly. At this time, the elastic deformation of the spring 241 absorbs and dissipates energy, realizing vibration isolation and buffer protection for the battery 30. Since multiple sets of springs 241 are arranged at intervals along the extension direction of the moving plate 24, they can achieve multi-point and balanced buffer support for the side of the battery 30, avoid local stress concentration, and improve the installation stability and service life of the battery 30. When disassembling the battery 30, the support leg 31 pushes the limiting member, so that the limiting member releases the locking of the connecting rod 243. Under the restoring force of the spring 241, the moving plate 24 drives the buffer plate 242 to reset away from the battery 30, and the circumferential pressing state of the battery 30 is released.

[0046] In one embodiment, the limiting member includes: a movable rod 273 slidably disposed within the switching plate 27 and located on both sides of the connecting rod 243; a movable block 274 movably disposed within the switching plate 27, its movement direction being perpendicular to the sliding direction of the movable rod 273; and a wedge-shaped portion 2741 disposed on the movable block 274; wherein, the movable rod 273 has a groove that mates with the wedge-shaped portion 2741, and the sliding of the movable rod 273 generates a vertical thrust on the movable block 274 through the inclined surface of the wedge-shaped portion 2741; the limiting member further includes a spring 275 disposed between the movable rod 273 and the switching plate 27 for providing a reset for the movable rod 273;

[0047] When it is necessary to remove the battery 30, push the switching plate 27 in the first direction. The switching plate 27 first causes the engaging section 272 to disengage from the battery support leg 31, releasing the axial lock. Continue pushing the switching plate 27, and the support leg 31 will push the moving rod 273 to slide against the elastic force of the spring 275. The lateral movement of the moving rod 273 is converted into a vertical upward thrust on the moving block 274 through the engagement of its slot with the inclined surface of the wedge-shaped part 2741 of the moving block 274. This forces the moving block 274 to lift out of the groove of the connecting rod 243, thereby releasing the engaging connection between the switching plate 27 and the connecting rod 243. Once the moving block 274 disengages from the groove, the buffer loses the mechanical force from the switching plate 27. Under the constraint of the restoring force of the spring 241, the moving plate 24 drives the buffer plate 242 to slide along the moving cavity 23 away from the battery 30, releasing the lateral pressure on the battery. At this time, the battery 30 can be removed. After disassembly, the external force is removed, and the switching plate 27 resets in the second direction under the action of the spring 25. When the moving block 274 moves to align with the groove on the connecting rod 243, the spring 275 pushes the moving rod 273 to reset. The moving rod 273 is converted into a vertical downward pushing force on the moving block 274 through the inclined surface of the wedge 2741, so that the moving block 274 enters the groove and restores the locking state between the switching plate 27 and the buffer.

[0048] In one embodiment, a through hole 28 is provided on the battery box 21 to communicate between the placement cavity 22 and the moving cavity 23. The through hole 28 is adapted to the support leg 31. When the battery is inserted into the placement cavity 22, the support leg 31 at its bottom first passes through the through hole 28, enters the area of ​​the moving cavity 23, and aligns with the insertion slot 276 on the switching plate 27. The through hole 28 guides and limits the insertion path of the support leg 31, ensuring that the support leg 31 accurately enters the tilt guide part 271, avoiding deflection or jamming, and improving installation reliability. At the same time, the through hole 28 can restrict the horizontal movement of the battery in the placement cavity 22. The cooperation between the support leg 31 and the through hole 28 constitutes the initial positioning of the battery 30 on the horizontal plane, which, together with the lateral pressing of the buffer, constrains the battery 30 and improves the overall installation stability of the battery 30 in a vibration environment.

[0049] In one embodiment, a mounting groove is further provided at the bottom of the battery box 21. A push rod 26 is slidably connected in the mounting groove. The push rod 26 extends into the moving cavity 23 and is fixedly connected to the switching plate 27. When the battery 30 needs to be removed, a pushing force is applied to the push rod 26 in the direction of the battery 30. The push rod 26 drives the switching plate 27 fixed to it to move in a first direction: First, the engaging section 272 of the switching plate 27 disengages from the battery support leg 31, releasing the axial lock; the push rod 26 is pushed further, and the push rod 26 continues to drive the switching plate 27 to move. The support leg 31 of the battery 30 triggers the action of the limiting member inside the switching plate 27, causing the moving block 274 to lift and disengage from the groove of the connecting rod 243, thereby releasing the lateral pressing lock of the buffer member.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An impact-resistant lithium-ion battery-powered impact rammer, characterized in that, include: The frame body is equipped with a tamping plate and a drive motor, and a mounting bracket is installed on the top of the frame body. The battery mechanism includes a battery box mounted on the mounting bracket, a placement cavity opened in the battery box for accommodating the battery, and multiple sets of L-shaped movable cavities opened on the battery box and surrounding the placement cavity. A buffer member is slidably connected in the movable cavity. A switching plate is engaged with the bottom side of the buffer member by a limiting member. A spring is provided between the switching plate and the inner wall of the movable cavity. An insertion slot for inserting the battery support foot is opened on the switching plate. The insertion slot includes an inclined guide part and an engaging section communicating with it. When installing the battery, the support leg slides along the inclined guide and drives the switching plate to compress the second spring and move in the first direction, while driving the buffer to press against the side of the battery. When the support leg slides to the position corresponding to the locking section, the switching plate moves in the second direction under the action of the second spring, driving the support leg to lock into the locking section to achieve axial locking. At the same time, the buffer is in the state of pressing the side of the battery. When removing the battery, drive the switching plate to move in the first direction, so that the locking section is disengaged from the support leg and the locking is released. Continue to move the switching plate so that the support leg abuts against the limiting member, control the limiting member to disengage from the buffer member, and the buffer member is reset to release the lateral pressure. The buffer component includes a movable plate slidably disposed within the movable cavity, an integrally formed connecting rod disposed at the bottom of the movable plate, and multiple sets of springs spaced apart along the extension direction of the movable plate. A connection hole is provided on the side wall of the battery box for communication between the movable cavity and the placement cavity. One end of each spring extends through the connection hole into the placement cavity, and the end of the spring extending into the placement cavity is fixedly connected to the buffer plate. The connecting rod is engaged and inserted into the switching plate by a limiting member. The limiting member includes: The movable rod is slidably disposed within the switching plate and located on both sides of the connecting rod; A movable block is movably disposed within the switching plate, and its direction of movement is perpendicular to the sliding direction of the movable rod. A wedge-shaped portion is disposed on the movable block; The movable rod has a groove that mates with the wedge-shaped part, and the sliding of the movable rod generates a vertical thrust on the movable block through the inclined surface of the wedge-shaped part. The limiting component also includes a spring three disposed between the moving rod and the switching plate for resetting the moving rod.

2. The impact-resistant lithium-ion battery impact rammer according to claim 1, characterized in that: The connecting rod has a groove that matches the moving block, and a limiting part is fixedly provided at one end of the connecting rod inside the switching plate.

3. The impact-resistant lithium-ion battery impact rammer according to claim 1, characterized in that: It also includes a mounting slot at the bottom of the battery box, in which a push rod is slidably connected, the push rod extending into the moving cavity and being fixedly connected to the switching plate.

4. The impact-resistant lithium-ion battery impact rammer according to claim 1, characterized in that: It also includes a through hole formed on the battery box and communicating between the placement cavity and the movable cavity, the through hole being adapted to the support leg.

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