Vertical water injection sandbag and detachable mobile transfer device thereof

Abstract

The present application belongs to the technical field of sports equipment, and particularly relates to a vertical water-filled sandbag and a detachable mobile transfer device thereof, which comprises a sandbag body and a transfer device. The sandbag body comprises a water tank provided with a water inlet, a support assembly vertically arranged in the middle of the water tank, a decorative ring sleeved on the support assembly, and a buffer layer wrapped outside the decorative ring and sleeved on the outside of the support assembly, and the water tank is provided with a clamping portion; the support rod of the support assembly is detachably connected with the positioning rod fixed in the buffer layer through a fastener, so that the buffer layer can be replaced as a whole. The transfer device comprises a frame provided with rollers, a lifting mechanism and an auxiliary support mechanism arranged on the frame, and a bracket connected with the movable part of the lifting mechanism, and the bracket is detachably matched with the clamping portion and driven by the lifting mechanism to lift the water tank, so that the sandbag body can be moved and transferred without draining water. The problems of the existing water-filled sandbag, such as laborious movement and non-replaceable buffer layer, are solved.

Description

Technical Field

[0001] This invention belongs to the field of sports equipment technology, and specifically relates to a vertical water-filled sandbag and its detachable mobile transfer device. Background Technology

[0002] Vertical water-filled sandbags, a common fitness training tool, are gaining popularity due to their advantages such as adjustable weight via water filling and ease of storage. However, existing vertical water-filled sandbags still have many shortcomings in practical use.

[0003] First, the weight of water-filled sandbags is considerable, typically reaching tens or even hundreds of kilograms. Moving them after training often requires significant physical exertion, which is extremely inconvenient. Second, current methods of transporting sandbags mostly involve manual dragging or lifting, which not only easily damages the ground but also poses a safety hazard due to improper handling that could cause the sandbags to tip over. Third, while some sandbags are equipped with a movable base, the moving mechanism is often an integral part of the sandbag itself, requiring the entire bag to be moved during transport, resulting in poor flexibility. Furthermore, the moving mechanism occupies space at the bottom of the sandbag, affecting its stability and aesthetics.

[0004] To address the aforementioned issues, some improvements have been made in existing technologies. For example, rollers are installed at the bottom of the sandbag base to enable movement. However, the roller structure can cause the sandbag to sway during training, affecting the training experience. Another approach is to use a detachable mobile cart, but this usually requires manual lifting of the sandbag and placement on the cart, which remains cumbersome.

[0005] Therefore, there is an urgent need for a vertical water-filled sandbag and a matching transfer device that can ensure the stability of the sandbag during training and can be easily and effortlessly transferred when needed. Summary of the Invention

[0006] To address the problems of excessive weight and difficulty in moving existing water-filled sandbags after filling, and to achieve a detachable design between the sandbag body and the transfer device, a vertical water-filled sandbag and its detachable mobile transfer device are provided.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows.

[0008] A vertical water-filled sandbag, i.e., the sandbag body, includes a water tank, a support assembly, a decorative ring, and a buffer layer. The water tank has an inlet at the top for injecting water or other liquid media to increase the bottom stability of the sandbag. The support assembly is positioned vertically in the middle of the water tank, serving as the skeletal support structure of the sandbag body. The decorative ring is fitted onto the support assembly, serving both decorative and protective functions. The buffer layer covers the outside of the decorative ring and is fitted onto the outside of the support assembly, used to withstand impacts and cushion the force. The water tank is provided with a locking part for engaging with a detachable mobile transfer device.

[0009] Furthermore, the support assembly includes a support rod and a positioning rod. The lower end of the support rod is fixedly connected to the water tank, and the positioning rod is fixed inside the buffer layer. The positioning rod is sleeved on the outside of the support rod, and the two are detachably fixed together by fasteners. A decorative ring is provided on the outside of the fasteners. Through the sleeved engagement of the support rod and the positioning rod and the locking of the fasteners, a stable connection between the buffer layer and the water tank is achieved, while facilitating disassembly and maintenance.

[0010] Furthermore, a limiting ring is provided at the top of the support rod, which is located between the support rod and the positioning rod to limit the axial movement of the positioning rod relative to the support rod; a cover plate is fixed to the top of the positioning rod, which presses against the top of the buffer layer to compress and position the buffer layer.

[0011] Furthermore, the buffer layer is composed of at least two layers of flexible materials stacked together, consisting of an EPP cotton layer, a PE high-elasticity buffer cotton layer, and a high-resilience sponge layer from the inside out, with an outermost protective layer, such as a PVC protective layer. This multi-layer composite structure can effectively absorb impact energy and provide good resilience and surface durability.

[0012] Furthermore, the bottom of the water tank is provided with an anti-slip mat, the top surface of which has a limiting structure, and the bottom surface of the water tank has a storage groove for accommodating the limiting structure. When the anti-slip mat is attached to the bottom surface of the water tank, the limiting structure is housed in the storage groove, thereby achieving a smooth fit between the anti-slip mat and the bottom surface of the water tank, which not only provides an anti-slip function but also prevents the limiting structure from being exposed and causing scratches on the ground.

[0013] Furthermore, a base plate is connected to the bottom of the support rod, and a limiting block is clamped between the base plate and the bottom wall of the water tank. A second limiting block is clamped between the top of the water tank and the support rod. The clamping of the upper and lower sets of limiting blocks further improves the stability of the connection between the support rod and the water tank.

[0014] A detachable mobile transport device for the aforementioned vertical water-filled sandbags includes a frame, a lifting mechanism, and a bracket. The frame is equipped with wheels at its bottom for easy overall movement. The lifting mechanism is mounted on the frame, and the bracket is connected to the movable part of the lifting mechanism. The bracket is designed to detachably engage with the locking part and, driven by the lifting mechanism, raises and lowers the water tank to achieve the mobile transport of the sandbag body.

[0015] Furthermore, the transfer device also includes an auxiliary support mechanism, which includes at least one support member. One end of the support member is hinged to the vehicle frame, and the other end is hinged to the bracket. The support member is used to provide support force to the bracket after the bracket is raised, thereby improving the load-bearing stability of the bracket during the transfer process.

[0016] Furthermore, the frame is provided with a support part, one end of the support member is hinged to the support part, and the support part is also provided with a receiving block. When the bracket is lowered to the low position, the bracket abuts against the receiving block, which plays a role in limiting and supporting.

[0017] Furthermore, the lifting mechanism includes a pull rod, a transmission rod, and at least one driven rod. One end of the pull rod is hinged to the vehicle frame, the transmission rod is hinged to the body of the pull rod, the end of the transmission rod away from the pull rod is hinged to the lower ends of all the driven rods, and the upper ends of each driven rod are hinged to the bracket. By pulling the pull rod, the transmission rod and the driven rod are driven in tandem, thereby realizing the lifting movement of the bracket.

[0018] Furthermore, the locking part is at least one locking groove provided at the bottom of the water tank, and the bracket is provided with a mating part that engages with the locking part, so as to lift the water tank off the ground when raised. The engagement method of the locking groove and the mating part is simple and reliable, and facilitates quick docking and separation.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] First, by setting a snap-fit ​​part on the water tank and designing a detachable mobile transfer device, the heavy sandbags can be easily moved after being filled with water. In use, the bracket of the transfer device is connected to the snap-fit ​​part of the water tank, and the sandbag body is lifted off the ground by the lifting mechanism. The sandbag can then be easily pushed to the target position with the help of rollers, without the need for manual dragging or lifting, saving time and effort, and avoiding friction damage between the sandbag body and the ground.

[0021] Secondly, the support components adopt a structure in which support rods and positioning rods are sleeved together and fasteners are locked, making the connection firm and reliable. It is not easy to loosen after long-term use, which effectively improves the overall structural stability and safety of the sandbag.

[0022] Third, the cushioning layer adopts a composite structure of EPP cotton layer, PE high-elasticity cushioning cotton layer and high-resilience sponge layer from the inside out, which takes into account multiple properties such as cushioning and energy absorption, elastic recovery and surface wear resistance, thereby improving the hitting comfort and service life of the sandbag.

[0023] Fourth, the bottom of the water tank is equipped with a retractable anti-slip mat, which not only provides a reliable anti-slip effect during use, but also allows the limiting structure to be housed in the storage slot when stored, preventing the exposed structure from damaging the ground. The structural design is ingenious and practical.

[0024] Fifth, the transfer device is equipped with an auxiliary support mechanism, which provides additional support after the bracket is raised, thereby enhancing the load-bearing stability and safety during the transfer process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure in use of the present invention.

[0026] Figure 2 This is a schematic diagram of the transfer device structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the lifting state structure of the transfer device of the present invention.

[0028] Figure 4 This is a schematic diagram of the sandbag body structure of the present invention.

[0029] Figure 5 This is an exploded view of the sandbag body structure of the present invention.

[0030] Figure 6 This is a cross-sectional view of the water tank of the present invention.

[0031] Figure 7 This is a cross-sectional view of the limiting ring of the present invention.

[0032] Figure label:

[0033] 1. Sandbag body; 2. Transfer device;

[0034] 11. Water tank; 12. Decorative ring; 14. Buffer layer; 15. Protective layer;

[0035] 101. Anti-slip mat; 102. Limiting block one; 103. Limiting block two; 104. Base plate; 105. Cover plate;

[0036] 111. Connecting part; 112. Water inlet;

[0037] 131. Support rod; 132. Positioning rod; 133. Limiting ring;

[0038] 141. EPP cotton layer; 142. PE high-elasticity cushioning cotton layer; 143. High-resilience sponge layer;

[0039] 21. Frame; 22. Tie rod; 23. Drive rod; 24. Driven rod; 25. Roller;

[0040] 211. Supporting part; 212. Supporting component; 213. Bracket; 2111. Receiving block. Detailed Implementation

[0041] 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.

[0042] like Figures 1-7 As shown, the present invention provides a vertical water-filled sandbag, namely the sandbag body 1, which includes a water tank 11, a support assembly, a decorative ring 12 and a buffer layer 14.

[0043] The water tank 11 has a hollow shell structure and can be integrally injection molded from high-strength plastic, possessing sufficient structural strength and impact resistance. A water inlet 112 is located at the top of the water tank 11, and a sealing cap can be installed at the inlet 112. After water is filled, the sealing cap is tightened to prevent water leakage. The capacity of the water tank 11 can be designed as needed, preferably 20L to 50L, providing a stable bottom counterweight for the sandbag body 1 after filling.

[0044] The support assembly is positioned upright in the middle of the water tank 11. For example... Figures 5-7 As shown, the support assembly includes a support rod 131 and a positioning rod 132. The lower end of the support rod 131 is fixedly connected to the water tank 11—specifically, a base plate 104 is connected to the bottom of the support rod 131, a limiting block 102 is clamped between the base plate 104 and the inner bottom wall of the water tank 11, and a limiting block 103 is clamped between the top of the water tank 11 and the support rod 131. Through the clamping of the limiting blocks 102 and 103, the support rod 131 is firmly positioned on the central axis of the water tank 11. The support rod 131 is preferably made of metal tubing with a rust-proof surface treatment.

[0045] The positioning rod 132 is fixed inside the buffer layer 14 and sleeved on the outside of the support rod 131, and the two are detachably fixed together by fasteners. The outer side of the fastener is covered with a decorative ring 12, which not only beautifies the appearance but also protects the fastener from impact damage.

[0046] A limiting ring 133 is provided at the top of the support rod 131. The limiting ring 133 is located between the support rod 131 and the positioning rod 132 and is used to limit the engagement depth of the positioning rod 132 to prevent the positioning rod 132 from moving too far downward. A cover plate 105 is fixed to the top of the positioning rod 132. The cover plate 105 presses against the top of the buffer layer 14, so that the upper end of the buffer layer 14 is effectively positioned and pressed.

[0047] The cushioning layer 14 covers the outside of the decorative ring 12 and is fitted over the support assembly. The cushioning layer 14 is composed of three layers of flexible material stacked sequentially from the inside out: the innermost layer is an EPP cotton layer 141, which has excellent impact resistance and energy absorption capacity; the middle layer is a PE high-elasticity cushioning cotton layer 142, providing good elastic recovery; and the outermost layer is a high-resilience sponge layer 143, providing a soft impact feel. The outermost layer is covered with a protective layer 15, which is wear-resistant, tear-resistant, and easy to clean. The layers can be bonded together with adhesive or sewn together.

[0048] The snap-fit ​​part 111 is provided on the water tank 11. In this embodiment, the snap-fit ​​part 111 is at least one snap-fit ​​groove provided at the bottom of the water tank 11, preferably two, symmetrically arranged on both sides of the water tank 11, and the snap-fit ​​groove is used to engage with the bracket 213 of the detachable mobile transfer device 2.

[0049] An anti-slip mat 101 is disposed at the bottom of the water tank 11. The top surface of the anti-slip mat 101 has a limiting structure, such as a protrusion or a raised strip, and the bottom surface of the water tank 11 has a receiving groove for accommodating the limiting structure. When the anti-slip mat 101 is attached to the bottom surface of the water tank 11, the limiting structure is received within the receiving groove, ensuring that the upper surface of the anti-slip mat 101 is flush with the bottom surface of the water tank 11. The lower surface of the anti-slip mat 101 may have anti-slip textures to increase friction with the ground. The anti-slip mat 101 may be made of rubber or TPE material.

[0050] like Figures 1-3 As shown, the transfer device 2 includes a frame 21, a lifting mechanism, and a bracket 213.

[0051] The frame 21 is a frame structure, which can be made of metal tubing welded or bolted together. The bottom of the frame 21 is equipped with rollers 25, preferably swivel casters, to facilitate multi-directional movement and positioning of the transfer device 2.

[0052] The lifting mechanism is mounted on the frame 21. For example... Figures 2-3 As shown, the lifting mechanism includes a pull rod 22, a transmission rod 23, and at least one driven rod 24. In this embodiment, two rods are preferred, symmetrically arranged on both sides of the frame 21. One end of the pull rod 22 is hinged to the frame 21, and the transmission rod 23 is hinged to the body of the pull rod 22. The end of the transmission rod 23 away from the pull rod 22 is hinged to the lower end of all the driven rods 24, and the upper end of each driven rod 24 is hinged to the bracket 213. A handle can be provided at the free end of the pull rod 22 for the operator to hold and apply lifting force.

[0053] The bracket 213 is connected to the upper end of the driven rod 24, the movable part of the lifting mechanism. The bracket 213 has a mating part, such as a protrusion or pin, that engages with the slot of the water tank 11's locking part 111. When it is necessary to transfer the sandbag body 1, the transfer device 2 is pushed under the sandbag body 1, aligning the mating part of the bracket 213 with the slot at the bottom of the water tank 11 and embedding it. Then, the pull rod 22 is pressed down, driving the driven rod 24 upward via the transmission rod 23, thereby lifting the bracket 213 and the water tank 11 together, causing the sandbag body 1 to detach from the ground. At this point, the operator can push the frame 21 and use the rollers 25 to move the sandbag body 1 to the target position. Upon reaching the destination, the pull rod 22 is lifted upward, the bracket 213 descends, the sandbag body 1 falls back to the ground, and then the transfer device 2 is pulled out from under the sandbag body 1, separating the sandbag body 1 from the transfer device 2.

[0054] The auxiliary support mechanism includes four symmetrically arranged support members 212. One end of each support member 212 is hinged to the frame 21, and the other end is hinged to the bracket 213. A support portion 211 is provided on the frame 21, and one end of each support member 212 is hinged to the support portion 211. When the bracket 213 is raised, the support member 212 moves with the bracket 213 and remains in the raised position, providing auxiliary support force to the bracket 213 and enhancing the load-bearing stability of the bracket 213. The support portion 211 is also provided with a receiving block 2111. When the bracket 213 descends to its lowest position, the bracket 213 abuts against the receiving block 2111, which serves to limit and support the bracket, preventing it from descending excessively.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vertical water-filled sandbag, characterized in that, The device includes a water tank, a support assembly, a decorative ring, and a buffer layer. The water tank has a water inlet at the top. The support assembly is placed upright in the middle of the water tank. The decorative ring is sleeved on the support assembly. The buffer layer covers the outside of the decorative ring and is sleeved on the outside of the support assembly. The water tank has a snap-fit ​​part for cooperating with a detachable mobile transfer device.

2. A detachable mobile transfer device for the vertical water-filling sandbag as described in claim 1, characterized in that, The device includes a frame, a lifting mechanism, and a bracket. The frame is equipped with rollers at its bottom. The lifting mechanism is mounted on the frame. The bracket is connected to the movable part of the lifting mechanism. The bracket is used to detachably engage with the snap-fit ​​part and, driven by the lifting mechanism, moves the water tank up and down to achieve the movement and transfer of sandbags.

3. The vertical water-filled sandbag according to claim 1, characterized in that, The support assembly includes a support rod and a positioning rod. The lower end of the support rod is fixedly connected to the water tank. The positioning rod is fixed inside the buffer layer. The positioning rod is sleeved on the outside of the support rod and the two are detachably fixed together by fasteners. A decorative ring is provided on the outside of the fasteners.

4. The vertical water-filled sandbag according to claim 3, characterized in that, A limiting ring is provided at the top of the support rod, and the limiting ring is located between the support rod and the positioning rod; a cover plate is fixed to the top of the positioning rod, and the cover plate presses against the top of the buffer layer.

5. The vertical water-filled sandbag according to claim 3, characterized in that, The buffer layer is composed of at least two layers of flexible materials stacked together, from the inside out: an EPP cotton layer, a PE high-elasticity buffer cotton layer, and a high-resilience sponge layer, with the outermost layer covered by a PVC protective layer.

6. The vertical water-filled sandbag according to claim 3, characterized in that, The bottom of the water tank is provided with an anti-slip mat, the top surface of the anti-slip mat is provided with a limiting structure, and the bottom surface of the water tank is provided with a storage groove for accommodating the limiting structure. When the anti-slip mat is attached to the bottom surface of the water tank, the limiting structure is accommodated in the storage groove.

7. The vertical water-filling sandbag according to claim 3, characterized in that, The bottom of the support rod is connected to a base plate, and a limiting block is clamped between the base plate and the bottom wall of the water tank. A limiting block is clamped between the top of the water tank and the support rod.

8. The detachable mobile transfer device according to claim 2, characterized in that, It also includes an auxiliary support mechanism, which includes at least one support member, one end of which is hinged to the frame and the other end of which is hinged to the bracket, for providing support force to the bracket after the bracket is raised.

9. The detachable mobile transfer device according to claim 8, characterized in that, The frame is provided with a support part, one end of the support member is hinged to the support part, and the support part is also provided with a receiving block. When the bracket is lowered to the low position, the bracket abuts against the receiving block.

10. The detachable mobile transfer device according to claim 2, characterized in that, The lifting mechanism includes a pull rod, a transmission rod, and at least one driven rod. One end of the pull rod is hinged to the vehicle frame, and the transmission rod is hinged to the body of the pull rod. The end of the transmission rod away from the pull rod is hinged to the lower end of all the driven rods, and the upper end of each driven rod is hinged to the bracket.

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