A collapsible shelving structure

Abstract

The utility model discloses a detachable shelf structure, including support no.

Description

Technical Field

[0001] This utility model relates to the field of ground drilling technology, and in particular to a detachable frame structure for a ground drilling machine. Background Technology

[0002] The ground drill is a handheld digging tool widely used in seedling planting, fence post installation, fruit tree fertilization and other scenarios. Its main body consists of an engine, gearbox, drill rod and bracket. The bracket is used to install important components such as the engine and gearbox, and also to protect the components installed inside the bracket. The upper part of the bracket forms two longitudinally extending handles on the left and right, which are used by the operator to hold and control the machine to complete the drilling operation.

[0003] For example, the Chinese utility model patent "Handheld Hole Drilling Machine with Safety Protection Structure" with patent announcement number CN223437382U includes a hole drilling machine body and a hole drill bit. The hole drilling machine body includes a bracket, an engine mounted on the bracket, a gearbox, a throttle switch and an engine stop switch. The bracket includes a base, two U-shaped bends fixed on the left and right sides of the base and a top frame fixed on the top of the U-shaped bends. The engine is mounted on the base and housed inside the bracket. The left and right rods of the top frame are used directly as handles.

[0004] The above structure uses welding or riveting to fix the U-shaped bends to the top frame as a whole, which cannot be disassembled during factory packaging. The two U-shaped bends and the top frame always occupy fixed space, resulting in a large packaging volume, low transportation efficiency, and a significant increase in warehousing and logistics costs. It also causes great inconvenience to end users in handling and storage. Utility Model Content

[0005] This invention addresses the problems of existing drilling rigs' integrated, non-detachable support structures, which result in large packaging volume, high logistics costs, and inconvenient handling. The technical problem this invention aims to solve is by providing a detachable support structure to address these issues. This detachable support structure results in a compact packaging volume, convenient transportation, and simple assembly. Once assembled, the structure is stable, effectively protecting the internal components and extending their service life.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a detachable frame structure, including a first support, a second support, a handle frame and a base plate; the base plate is horizontally straddling between the first support and the second support, and both ends of the base plate are detachably connected to the bottom of the first support and the bottom of the second support respectively; the lower ends of the handle frame are detachably connected to the upper ends of the first support and the second support respectively; the first support, the second support, the handle frame and the base plate together form an installation chamber for installing the engine.

[0007] A further preferred embodiment of this utility model is as follows: the upper side of the first bracket is bent away from the second bracket to form a protective arm 1 that covers one side of the engine; the upper side of the second bracket is bent away from the first bracket to form a protective arm 2 that covers the other side of the engine; both the first and second protective arms are U-shaped or n-shaped structures with openings facing the installation chamber.

[0008] A further preferred embodiment of this utility model is: a U-shaped handle is installed laterally on the handle frame, extending inwards, and the engine is installed behind the mounting chamber, with the U-shaped handle located above the engine.

[0009] A further preferred embodiment of this utility model is as follows: both the first bracket and the second bracket are provided with a first connection end on the same side of the installation chamber, and the lower ends of the handle frame are provided with second connection ends on both sides. The two second connection ends are respectively detachably connected to the corresponding first connection end through a bolt and nut assembly or a snap-fit ​​structure.

[0010] A further preferred embodiment of this utility model is as follows: the first connecting end is a sleeve extending from the bend of the first or second bracket towards the bottom, the second connecting end is a connecting rod adapted to the sleeve, and the sleeve and the connecting rod are detachably connected by a bolt and nut assembly or a spring pin.

[0011] A further preferred embodiment of this utility model is as follows: the first bracket includes an upward-opening U-shaped support rod and an L-shaped rod body and an extension rod integrally formed with the upper ends of the two arms of the U-shaped support rod, respectively. A connecting bracket is detachably provided between the L-shaped rod body and the extension rod to connect the L-shaped rod body and the extension rod. The L-shaped rod body, the extension rod and the connecting bracket form the first protective arm. The second bracket has a structure that is mirror-symmetrical to the first bracket.

[0012] A further preferred embodiment of this utility model is that rubber pads are provided between the connecting bracket and the L-shaped rod, and between the connecting bracket and the extension rod.

[0013] A further preferred embodiment of this utility model is: the U-shaped support rod, L-shaped rod, extension rod and connecting bracket together form a “7” frame with a locking position in the middle, which is used to hold the engine.

[0014] A further preferred embodiment of this utility model is as follows: the base plate includes two limiting rods and two connecting plates disposed between the two limiting rods. The two connecting plates are respectively located on both sides of the two limiting rods and are integrally formed with the two limiting rods. The two limiting rods are arched upwards to limit the front and rear sides of the engine. The outer ends of the two connecting plates each have flanges that abut against the outer bottom of bracket one and bracket two. The flanges fix the base plate to bracket one and bracket two by bolt and nut assembly.

[0015] A further preferred embodiment of this utility model is: the inner ends of the two connecting plates extend towards each other to form a base support for fixing the engine, and there is a gap between the two base supports, which forms a mounting port for the engine output end to pass through.

[0016] Compared with the prior art, the present invention has the following advantages: 1. By designing the frame structure as a detachable connection of four major modules: Frame 1, Frame 2, Handle Frame, and Base Plate, these four modules can be disassembled individually before transportation, which greatly reduces the packaging volume, saves space, and makes handling more convenient and flexible. This fundamentally solves the core defect of the background technology that "the inability to disassemble leads to a large packaging volume", greatly improves transportation efficiency and reduces overall costs.

[0017] 2. The four main modules enclose the mounting chamber, surrounding the engine at the center and creating a complete protective frame. This structure effectively absorbs and buffers impacts from all directions, ensuring that the impact is first absorbed by the frame structure rather than directly acting on the engine body. This provides more comprehensive protection for critical engine components (such as spark plugs and fuel lines), thereby extending the engine's service life. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present invention; Figure 2 This is an exploded view of a preferred embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the base plate of a preferred embodiment of the present invention.

[0020] In the diagram: 1. Bracket 1; 11. Protective arm 1; 111. L-shaped rod; 112. Extension rod; 113. Connecting bracket; 1131. Connector; 1132. Fixing hole; 12. U-shaped support rod; 121. Limiting hole 2; 13. Sleeve; 14. Connecting hole; 2. Bracket 2; 212. Circular limiting platform; 3. Handle frame; 31. U-shaped handle; 32. Connecting rod; 321. Through hole; 4. Base plate; 41. Limiting rod; 42. Connecting plate; 421. Flanged edge; 4211. Limiting hole 1; 43. Mounting port; 5. Locking position; 6. Rubber pad. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0023] This embodiment mainly describes a detachable frame structure, as follows: like Figures 1 to 3 As shown, a detachable frame structure consists of four main modules: a first support 1, a second support 2, a handle frame 3, and a base plate 4. The base plate 4 straddles the first support 1 and the second support 2 laterally. Both ends of the base plate 4 are detachably connected to the bottom of the first support 1 and the bottom of the second support 2, respectively. The base plate 4 not only bears the entire weight of the engine but also rigidly connects the lower ends of the left and right supports to form a "base frame," preventing the engine from deforming outwards during transport. The lower ends of the handle frame 3 are detachably connected to the upper ends of the first support 1 and the second support 2, respectively. The first support 1, the second support 2, the handle frame 3, and the base plate 4 together form a mounting chamber for the engine. The engine is enclosed within this chamber, and any impact from any direction is absorbed by the frame first, rather than directly acting on the engine body. When packaging and transport are required, the first support 1, the second support 2, and the handle frame 3 can be directly disassembled, solving the pain point of the integrated support structure in the background technology, which leads to large packaging volume and inconvenient transportation.

[0024] Specifically, the upper side of bracket 1 is bent away from bracket 2 to form an "n or U" shaped protective arm 11 with its opening facing the installation chamber, covering one side of the engine. When the drilling rig moves between seedlings or digs a hole close to a wall, in the event of a lateral collision, the protective arm 11 will contact the obstacle before the engine, preventing direct impact to vulnerable parts such as spark plugs and oil pipes. Simultaneously, both protective arms 11 can be used as handles during operation.

[0025] Specifically, a U-shaped handle 31 is installed laterally on the upper side of the handle frame 3, extending inward. After the engine is installed in the mounting chamber, the U-shaped handle 31 is suspended just above the engine and maintains a safe gap with the top of the engine. When handling, the entire machine can be lifted by simply holding the U-shaped handle 31, without the need for additional external handles, thus reducing the number of parts. At the same time, during transportation, the U-shaped handle 31 can protect the top of the engine and prevent the top of the engine from being hit.

[0026] Specifically, bracket 1 and bracket 2 are located on the same side of the installation chamber (such as the front or rear side of the installation chamber) and are each equipped with a connecting end 1. The lower ends of the handle 3 extend to the two connecting ends 2. The two connecting ends 2 are fixed to the connecting ends 1 by bolt and nut assemblies or snap-fit ​​structures. The specific connection method is as follows: the connecting end 1 is a sleeve 13 that extends vertically to the bottom from the bend of bracket 1 or bracket 2. The connecting end 2 is a connecting rod 32 that is adapted to the sleeve 13. The sleeve 13 is provided with a transverse through connecting hole 14. The connecting rod 32 is provided with a through hole 321 corresponding to the connecting hole 14. The connecting rod 32 is provided with an annular limiting platform 212. During installation, the connecting rod 32 slides into the sleeve 13 from top to bottom. The annular limiting platform 212 abuts against the upper end of the sleeve 13. At this time, the connecting hole 14 corresponds to the through hole 321. The connecting rod 32 and the sleeve 13 are fixed by bolts passing through the connecting hole 14 and the through hole 321 in sequence and with nuts. Another connection method between the sleeve 13 and the connecting rod 32 is as follows: the connecting rod 32 has a spring pin that passes through it laterally, and the sleeve 13 has locking holes for the two free ends of the spring pin to pass through. During installation, the connecting rod 32 is inserted into the sleeve 13, and the two ends of the spring pin automatically spring into the locking holes. When packaging at the end of the production line, workers only need to press the two ends of the spring pin or remove the bolts, and the handle 3 can be separated from the bracket 1 and bracket 2, reducing the packaging volume. When it reaches the end user, if the engine suddenly needs to be disassembled in the field, it can be quickly disassembled by pressing the two ends of the spring pin with an adjustable wrench or by hand, overcoming the embarrassment of "welded and must be returned to the factory" in the past.

[0027] Specifically, bracket 1 consists of an upward-opening U-shaped support rod 12, an L-shaped rod body 111 integrally formed with the upper ends of the two arms of the U-shaped support rod 12, and an extension rod 112. A connecting bracket 113 is provided between the L-shaped rod body 111 and the extension rod 112. The connecting bracket 113 is used to connect the L-shaped rod body 111 and the extension rod 112. The connection method between the connecting bracket 113 and the L-shaped rod body 111 and the extension rod 112 is as follows: the two ends of the connecting bracket 113 are provided with connectors 1131 corresponding to the ends of the L-shaped rod body 111 and the extension rod 112, respectively. The connectors 1131 are provided with fixing holes 1132. The L-shaped rod body 111 and the extension rod 112 are both provided with internal threaded holes corresponding to the fixing holes 1132. One end of the connecting bracket 113 is threadedly connected to the threaded hole of the L-shaped rod body 111 by a bolt passing through the fixing hole 1132, and the other end is also threadedly connected to the threaded hole of the extension rod 112 by a bolt passing through the fixing hole 1132. The L-shaped rod 111, the extension rod 112, and the connecting bracket 113 form the aforementioned "n-shaped or U-shaped" protective arm 11. The structure of the second bracket 2 is the same as that of the first bracket 1 but is mirror-symmetrical. A detachable connecting bracket 113 is provided between the L-shaped rod 111 and the extension rod 112 of the first bracket and the second bracket 2. This allows for the easy application of an anti-slip sleeve onto the L-shaped rod 111. Furthermore, after the connecting bracket 113 is removed, a gap exists between the L-shaped rod 111 and the extension rod 112, allowing for a certain amount of deformation in the first bracket and the second bracket 2, which facilitates the installation of large-sized engines.

[0028] Specifically, the U-shaped support rod 12, L-shaped rod 111, extension rod 112 and connecting frame 113 together form a "7" frame with a locking position 5 in the middle. After the engine is installed in the installation chamber, the left and right sides of the engine fall into the locking positions 5 of bracket 1 and bracket 2 respectively. The two arms of the U-shaped support rod 12 of bracket 1 can provide anti-collision protection for the front and rear sides of the left side of the engine, and the U-shaped support rod 12 of bracket 1 can provide anti-collision protection for the front and rear sides of the right side of the engine.

[0029] Specifically, to improve the user experience and enhance the shock absorption effect, rubber pads 6 are provided between the connecting bracket 113 and the L-shaped rod 111, and between the connecting bracket 113 and the extension rod 112. When the high-frequency vibration of the engine is transmitted through the bracket 111, the rubber pads 6 first undergo shear deformation, which has a shock absorption effect, so that the user's hands will not feel numb after long-term operation; at the same time, it also prevents the bolts from loosening due to the vibration of the engine.

[0030] Specifically, the base plate 4 includes two limiting rods 41 and two connecting plates 42 disposed between the two limiting rods 41. The two connecting plates 42 are located on both sides of the two limiting rods 41 and are integrally formed with the two limiting rods 41. The two limiting rods 41 are arched upward to limit the front and rear sides of the engine. The outer ends of the two connecting plates 42 each have a flange 421 that abuts against the outer side of the bottom of the U-shaped support rod 12 of bracket 1 and bracket 2. The inner ends of the two connecting plates 42 extend towards each other to form a base support for fixing the engine. There is a gap between the two base supports, which forms a mounting port 43 for the engine output end to pass through. The two flanges 421 are provided with limiting holes 4211. The bottom of the U-shaped support rod 12 of the right support 2 of bracket 1 is provided with limiting holes 121 corresponding to the limiting holes 4211. The two flanges 421 are fixed to the U-shaped support rod 12 of bracket 1 and bracket 2 respectively by bolts passing through the limiting holes 4211 and 121. The lower end of the engine is fixed to the base with screws, and the front and rear sides of the engine bottom are limited and protected by two limiting rods 41. The bottom of the U-shaped support rod 12 of bracket 1 and bracket 2 provides anti-collision protection for the bottom of the engine.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. 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.

[0032] The above provides a detailed description of the detachable shelf structure provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A detachable frame structure, characterized in that: It includes a first bracket, a second bracket, a handle frame, and a base plate; the base plate straddles the first and second brackets laterally, and its two ends are detachably connected to the bottom of the first bracket and the bottom of the second bracket, respectively; the lower ends of the handle frame are detachably connected to the upper ends of the first and second brackets, respectively; the first bracket, the second bracket, the handle frame, and the base plate together form an installation chamber for mounting the engine.

2. The detachable frame structure according to claim 1, characterized in that: The upper side of bracket one is bent away from bracket two to form a protective arm one that covers one side of the engine. The upper side of bracket two is bent away from bracket one to form a protective arm two that covers the other side of the engine. Both protective arm one and protective arm two are U-shaped or n-shaped structures with openings facing the installation chamber.

3. A detachable frame structure according to claim 1 or 2, characterized in that: The handle is laterally mounted on the frame and extends inward to form a U-shaped handle. The engine is installed behind the mounting chamber, and the U-shaped handle is located above the engine.

4. The detachable frame structure according to claim 2, characterized in that: Both bracket one and bracket two are provided with connection end one on the same side of the installation chamber. Both sides of the lower end of the handle frame are provided with connection end two. The two connection ends two are detachably connected to the corresponding connection end one through bolt and nut assemblies or snap-fit ​​structures.

5. A detachable frame structure according to claim 4, characterized in that: The first connecting end is a sleeve extending from the bend of the first or second bracket towards the bottom, and the second connecting end is a connecting rod adapted to the sleeve. The sleeve and the connecting rod are detachably connected by a bolt and nut assembly or a spring pin.

6. A detachable frame structure according to claim 2, characterized in that: The first bracket includes an upward-opening U-shaped support rod and an L-shaped rod body and an extension rod integrally formed with the upper ends of the two arms of the U-shaped support rod. A connecting bracket is detachably provided between the L-shaped rod body and the extension rod to connect the L-shaped rod body and the extension rod. The L-shaped rod body, the extension rod and the connecting bracket form the first protective arm. The second bracket has a structure that is mirror-symmetrical to the first bracket.

7. A detachable frame structure according to claim 6, characterized in that: Rubber pads are provided between the connecting bracket and the L-shaped rod, and between the connecting bracket and the extension rod.

8. A detachable frame structure according to claim 6, characterized in that: The U-shaped support rod, L-shaped rod, extension rod, and connecting bracket together form a "7"-shaped frame with a locking position in the middle, used to hold the engine.

9. A detachable frame structure according to claim 1, characterized in that: The base plate includes two limiting rods and two connecting plates disposed between the two limiting rods. The two connecting plates are located on both sides of the two limiting rods and are integrally formed with the two limiting rods. The two limiting rods are arched upwards to limit the front and rear sides of the engine. The outer ends of the two connecting plates have flanges that abut against the outer bottom of bracket one and bracket two. The flanges fix the base plate to bracket one and bracket two by bolt and nut assembly.

10. A detachable frame structure according to claim 9, characterized in that: The inner ends of the two connecting plates extend toward each other to form a base for fixing the engine. There is a gap between the two bases, which forms a mounting port for the engine output end to pass through.

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