Buffer structure and bamboo stopping device for bamboo descending

Abstract

The application discloses a bamboo material downhill buffering structure and a bamboo material stopping device, and belongs to the technical field of bamboo material conveying. The buffering structure comprises a hard receiving part, the hard receiving part is provided with a receiving surface facing the output direction of the bamboo material, and an expansion surface is formed on the outer periphery of the part in contact with the bamboo material; and a buffering part is arranged on the side of the hard receiving part away from the receiving surface, and the buffering part comprises a part capable of being elastically deformed when impacted by the bamboo material. The application has the advantages of good buffering effect and low damage to the bamboo material.

Description

Technical Field

[0001] This utility model belongs to the field of bamboo material conveying technology, specifically relating to a buffer structure with good buffering effect and bamboo material not easily damaged, and a bamboo stopping device using the buffer structure. Background Technology

[0002] Moso bamboo, as a fast-growing and biodegradable high-quality natural material, has wide application and economic value in many fields such as construction, furniture, papermaking, and medicine. However, in major moso bamboo producing areas in my country, such as economically developed regions like Zhejiang, the economic model of harvesting moso bamboo from the mountains is facing severe challenges due to the rapid increase in labor costs year by year. In recent years, the labor cost of cutting down moso bamboo from the mountains and transporting it down has exceeded the market value that the bamboo itself can generate. This price inversion has led farmers in bamboo-producing areas to believe that cutting down moso bamboo is unprofitable, and therefore they have abandoned the transportation, leaving it to die naturally.

[0003] Moso bamboo has a specific lifespan, typically dying naturally in large patches after about 13 years of growth. The direct consequence of farmers abandoning harvesting is that once lush green bamboo mountains are now covered with patches of yellow, dead bamboo forests formed by the withering and death of the bamboo. This not only represents a huge waste of precious natural resources but also has a negative visual and ecological impact on the local green landscape, running counter to the concept of sustainable development.

[0004] In conclusion, there is an urgent need for an innovative technical solution, such as using a hypothetical pipeline to transport bamboo from a high mountain to the foot of the mountain by the bamboo's own weight and inertia. However, the impact force generated by the bamboo is enormous, and how to prevent the negative effects of this impact force is a technical problem that urgently needs to be solved. Utility Model Content

[0005] This utility model provides a buffer structure and a bamboo stopping device for bamboo to descend a mountain, which has a good impact buffering effect on bamboo and is not easily damaged by the bamboo itself.

[0006] The technical solution of this utility model is based on many problems such as poor buffering effect, short service life of buffering structure, and easy damage of bamboo itself.

[0007] The specific technical solution is explained below:

[0008] The buffer structure for bamboo transported downhill includes:

[0009] The rigid receiving part has a receiving surface facing the bamboo output direction, and the receiving surface has an expanding surface formed on the outer periphery of the part in contact with the bamboo.

[0010] A buffer section is provided on the side of the rigid support section away from the support surface, and the buffer section includes a part that undergoes elastic deformation when impacted by bamboo.

[0011] In a further embodiment, a rotating part is also included, wherein the rotating part is provided with a rotating shaft, and the receiving surface has a rotational stroke around the rotating shaft and forms different bamboo impact positions on the rotational stroke.

[0012] In a further preferred embodiment, one end of the rotating shaft is fixed to the middle of the rigid bearing portion, and the shaft body of the rotating shaft is rotatably connected to a connecting seat.

[0013] In a further embodiment, the buffer portion has a gradient buffer portion with elastic decreasing along the impact direction of the bamboo material.

[0014] In a further preferred embodiment, along the impact direction of the bamboo, the gradient buffer portion is composed of a solid elastic layer and a porous elastic layer in sequence.

[0015] In a further embodiment, the buffer portion includes a crack-resistant buffer portion having a compression stroke that is compressed when impacted by bamboo.

[0016] In a further preferred embodiment, the anti-breakage buffer is a spring arranged around the rotating shaft, and the compression stroke of the spring is in line with the axial direction of the rotating shaft.

[0017] In a preferred embodiment, the spring is disposed between the rigid receiving portion and the connecting seat.

[0018] The bamboo-stopping device uses the buffer structure described in any of the above technical solutions to buffer the lowered bamboo.

[0019] In summary, the technical solution described in this utility model has the following main beneficial effects:

[0020] Compared with existing technologies, the technical solution of this utility model can stably and efficiently absorb and dissipate the impact force of bamboo, and prevent damage to the buffer structure and bamboo stopping device.

[0021] At the same time, bamboo itself is not easily damaged by impact, which can ensure the integrity of the bamboo material and facilitate its later processing and use.

[0022] Further or more detailed beneficial effects will be described in conjunction with specific embodiments in the detailed implementation. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the bamboo-stopping device in use in a specific implementation embodiment;

[0024] Figure 2 This is a three-dimensional structural diagram of the bamboo-stopping device in a specific implementation method;

[0025] Figure 3 yes Figure 2 Enlarged view of the structure of area A;

[0026] Figure 4 This is a side view of the bamboo-stopping device in a specific implementation method;

[0027] Figure 5 yes Figure 4 Enlarged view of the structure of area A;

[0028] Figure 6 This is a schematic diagram of a buffer structure with a rupture-resistant buffer section in a specific implementation.

[0029] Figure label:

[0030] a: Location for placing bamboo on the mountain; b: Bamboo placement pipe; c: Hillside or valley; d: Bamboo stopping device; e: Bamboo placement platform; f: Recycled bamboo.

[0031] 1.1: Rigid bearing part; 1.11: Bearing surface; 1.11a: Diffusion surface;

[0032] 1.2: Buffer section; 1.21: Gradient buffer section; 1.21a: Solid elastic layer; 1.21b: Porous elastic layer; 1.22: Anti-rupture buffer section;

[0033] 1.3: Rotating part, 1.31: Rotating shaft, 1.32: Connecting seat. Detailed Implementation

[0034] The present invention will be further explained in conjunction with the embodiments:

[0035] The core technical problem faced by the technical solution of this application embodiment stems from the inventor's accurate understanding of the prior art. Therefore, how to better stabilize the impact force brought by bamboo and make the bamboo itself less prone to breakage is a technical problem that the inventor urgently needs to solve.

[0036] It should be noted that the embodiments do not constitute a limitation on the scope of protection of the claims of this utility model. All technical solutions that can be reasonably expected by those skilled in the art based on the technical concepts provided / proved by the embodiments should be covered within the scope of protection of the claims of this utility model.

[0037] The implementation method is described in detail below:

[0038] This embodiment relates to a buffer structure for bamboo hauling downhill and a bamboo-stopping device including the buffer structure, aiming to solve the problems of high cost and low efficiency in bamboo hauling downhill in the prior art, as well as the easy damage and poor protective effect of existing buffer methods. The technical solution of the present invention will be described in detail below through specific embodiments.

[0039] Please refer to the attached document. Figures 1-5 In this embodiment, the buffer structure for bamboo hauling mainly includes a rigid support portion 1.1 and a buffer portion 1.2. The rigid support portion 1.1 can be made of a steel plate of a certain thickness or other high-strength metal material, and it has a support surface 1.11 facing the direction of bamboo output. This support surface 1.11 is designed to form an outwardly expanding diffusion surface 1.11a on the outer periphery of the part in contact with the bamboo end. For example, the diffusion surface 1.11a can be an annular surface that smoothly transitions outward from the central contact area. The buffer portion 1.2 is fixedly installed on the side of the rigid support portion 1.1 away from the support surface 1.11, that is, on the back side of the rigid support portion 1.1. The buffer portion 1.2 includes a part that can generate elastic deformation when impacted by bamboo, for example, it is made of a high-molecular elastic material such as rubber or polyurethane. The technical advantage of this design lies in the fact that when bamboo is transported at high speed from a high altitude on a mountain to the bamboo-stopping device below by gravity or inertia, its end first impacts the receiving surface 1.11 of the rigid receiving part 1.1. Because the rigid receiving part 1.1 is made of rigid material, its receiving surface 1.11 hardly deforms upon impact, and can stably withstand the initial impact force. Crucially, the diffusion surface 1.11a of the outer periphery of the receiving surface 1.11 gives the entire receiving surface 1.11 a larger effective area relative to the radial cross-section of the bamboo. Therefore, the impact force of the bamboo can be transferred backward to the buffer part 1.2 through this larger area. This significantly reduces the impact pressure per unit area, allowing the impact energy density generated by the bamboo under gravity and inertia to be dispersed and weakened, thus providing a good buffering effect in the initial stage. Subsequently, the remaining impact energy is further absorbed and dissipated by the buffer part 1.2 through its own elastic deformation, jointly achieving effective attenuation of the impact force and protecting the device structure.

[0040] Please continue to refer to the appendix. Figures 1-5In a further embodiment, the buffer structure is further enhanced with a rotating part 1.3. The rotating part 1.3 includes a rotating shaft 1.31. The installation of the rotating shaft 1.31 allows the aforementioned rigid receiving part 1.1 and its receiving surface 1.11 to rotate around the axis of the rotating shaft 1.31, thus forming a rotation stroke. Through rotation, different areas on the receiving surface 1.11 can alternately correspond to the impact direction of the bamboo, forming different bamboo impact positions. This design is mainly to solve the problem of material fatigue. In practical applications, after repeated impacts from bamboo, the buffer structure (especially the receiving surface 1.11 of the rigid receiving part 1.1 and its connection area with the buffer part 1.2) is prone to material fatigue at local stress concentration points, leading to irreversible damage such as plastic deformation and cracking, ultimately reducing the service life of the entire buffer structure. By introducing the rotating part 1.3, the operator can periodically (e.g., after a certain period of work or after receiving a certain number of bamboo) manually or automatically rotate the shaft 1.31 via a drive device, thereby changing the position on the rigid bearing part 1.1 that bears the impact. In this way, the impact load is distributed to different areas of the entire bearing surface 1.11, avoiding long-term impact on a single location, greatly delaying the occurrence of material fatigue, and significantly improving the durability and service life of the buffer structure.

[0041] Please continue to refer to the appendix. Figures 1-5 In a further embodiment, the specific connection method of the rotating part 1.3 is as follows: one end of the rotating shaft 1.31 is fixedly connected to approximately the middle position of the rigid receiving part 1.1 to provide a stable rotation center. The shaft of the rotating shaft 1.31 passes through a connecting seat 1.32 and is rotatably connected to the connecting seat 1.32 through components such as bearings or bushings. The connecting seat 1.32 can be, for example, a box made of steel. The technical advantage of this connection method is that it constructs a motion mechanism that is both stable and flexible. The connecting seat 1.32 can be firmly installed on the frame or foundation of the stopping device, providing stable support for the entire rotation and buffering system. The rotatable connection between the rotating shaft 1.31 and the connecting seat 1.32 ensures that the rigid receiving part 1.1 can rotate smoothly and reliably around the axis to achieve the change of impact position. This structure takes into account both the realization of the rotation function and the mechanical strength of the overall structure, ensuring the stable operation of the device under long-term impact loads.

[0042] Please continue to refer to the appendix. Figures 1-5In a further embodiment, the buffer portion 1.2 is designed to have a gradually changing elasticity along the impact direction of the bamboo, forming a gradient buffer portion 1.21. Specifically, the elasticity of the buffer portion 1.2 decreases along the direction of the bamboo impact force transmission, i.e., from the receiving surface 1.11 backward. The technical effect of this gradient design is that it can achieve a better energy absorption curve. When the impact force is received, the relatively "hard" front part of the gradient buffer portion 1.21 can respond quickly, bearing and dispersing most of the initial peak impact force; subsequently, the impact energy is transmitted backward to the increasingly "soft" buffer portion, where it is absorbed and dissipated more gently. This transition from hard to soft, compared to a uniform buffer material, can more effectively reduce the peak impact and prolong the impact duration, thereby providing a smoother and more efficient buffering effect, further reducing impact damage to the device and the bamboo itself.

[0043] Please continue to refer to the appendix. Figures 1-5 In a further embodiment, along the impact direction of the bamboo, the gradient buffer 1.21 is composed of a solid elastic layer 1.21a and a porous elastic layer 1.21b in sequence. The solid elastic layer 1.21a can be made of high-density, highly abrasion-resistant rubber or polyurethane board, which is tightly attached to the back of the rigid support 1.1. The porous elastic layer 1.21b can be made of closed-cell or open-cell foam materials (such as polyurethane foam, EVA sponge, etc.). The technical advantage of this layered structure is that it achieves a gradient distribution of functions. The solid elastic layer 1.21a directly bears the force transmitted from the rigid support 1.1, and due to its density and durability, it can provide reliable and durable impact absorption in the initial stage and effectively transfer energy to the rear. The porous elastic layer 1.21b utilizes its numerous internal pores to further absorb and dissipate energy when subjected to pressure through deformations such as bending and closing of the pore walls. At the same time, due to its porous nature, it has a low density, which helps to reduce the weight of the entire buffer structure. Furthermore, the pores have a certain damping effect on vibration and sound, and can also produce a certain degree of noise reduction.

[0044] Please refer to the attached document as well. Figure 6In a further embodiment, the buffer 1.2 specifically includes a crack-resistant buffer 1.22. This crack-resistant buffer 1.22 is designed to have a defined stroke that can be compressed upon impact with the bamboo. For example, it can be one or more springs, or an elastic body with an internal cavity that can contract under pressure. This design primarily focuses on protecting the bamboo itself. Because bamboo is a hollow structural material, when it impacts the rigid bearing surface 1.11 at a high speed, the enormous instantaneous impact force can cause crushing, splitting, or other damage to the bamboo ends. The crack-resistant buffer 1.22, through its compressible stroke, undergoes compressive deformation upon impact. This process prolongs the time the bamboo experiences force from contact to cessation. According to the momentum theorem, a longer force application time significantly reduces the instantaneous impact force (impulse) on the bamboo. Therefore, this design effectively reduces the risk of bamboo breakage due to collision, ensuring the integrity of the bamboo during its descent and improving its utilization value.

[0045] Please continue to refer to the appendix. Figure 6 In a further embodiment, the anti-breakage buffer 1.22 is combined with the aforementioned rotating part 1.3. That is, the anti-breakage buffer 1.22 with a compression stroke is also integrated into the rotating buffer structure that includes the rotating shaft 1.31 and the connecting seat 1.32. The technical effect of this combination is that it simultaneously solves the problems of device durability and bamboo integrity. The rotating part 1.3 extends the device's lifespan by changing the impact point, while the anti-breakage buffer 1.22 directly protects the bamboo itself. The two work together, enabling the buffer structure to not only operate stably for a long time, but also to ensure the quality of the harvested bamboo, achieving a dual optimization effect. Furthermore, the anti-breakage buffer 1.22 is specifically a spring arranged around the rotating shaft 1.31. The compression stroke of the spring is designed to follow the axial direction of the rotating shaft 1.31, that is, when the bamboo impacts the bearing surface 1.11, the impact force is transmitted through the rigid bearing part 1.1 and is ultimately converted into a force that compresses the spring along the axial direction of the rotating shaft 1.31. The technical advantage of this design lies in the fact that the pivot 1.31 itself provides a clear guide and constraint for the compression and rebound of the spring, ensuring that the spring always moves along the predetermined axial direction, avoiding lateral bending or unstable deformation, thereby forming a stable and reliable compression / rebound path and guaranteeing consistent cushioning performance. Furthermore, the anti-rupture buffer 1.22 can also be used in combination with the gradient buffer 1.21 mentioned in the aforementioned embodiments. In terms of spatial arrangement, along the impact direction of the bamboo, the anti-rupture buffer 1.22 can be located behind the gradient buffer 1.21, forming a multi-stage buffer system. The gradient buffer 1.21 first absorbs and disperses the initial energy, and then the anti-rupture buffer 1.22 further reduces the impact force through its compression stroke.

[0046] Please continue to refer to the appendix. Figures 1-6In a further embodiment, the spring is specifically disposed between the rigid support portion 1.1 and the connecting seat 1.32. For example, one end of the spring rests against the back of the rigid support portion 1.1 (or against another rigid plate disposed opposite to the rigid support portion 1.1, in which case the gradient buffer portion 1.21 is located between the rigid support portion 1.1 and the other rigid plate), while the other end rests against the connecting seat 1.32. The technical advantage of this arrangement is that the connecting seat 1.32, as a fixed support base, provides the spring with the necessary reaction force support point when compressed. When the bamboo impacts, the rigid support portion 1.1 transmits the force to the spring, which compresses and absorbs energy; after the impact, the spring releases its elastic potential energy, pushing the rigid support portion 1.1 back to its original position. During this process, the rigid support portion 1.1 transmits the impact force and also bears the spring's rebound force, while the connecting seat 1.32 ensures the stability of the entire mechanical path.

[0047] Please continue to refer to the appendix. Figures 1-3 This embodiment provides a bamboo stopping device. This device uses the buffer structure described in any of the preceding embodiments to buffer and decelerate the bamboo descending the mountain. When using this device, bamboo is placed from bamboo placement point a on the mountain into the bamboo placement pipe b, passes through the hillside or valley c, and reaches the bamboo stopping device d. The bamboo stopping device d is located on the bamboo placement platform e, and the retrieved bamboo f can be placed beside it.

[0048] This bamboo-stopping device, by integrating the aforementioned buffer structure, can effectively cope with the enormous impact energy brought by bamboo descending a mountain. Firstly, thanks to the design of the buffer structure, the device can stably and efficiently absorb and dissipate the impact force of the bamboo, preventing damage to the device itself due to overload. Secondly, the inclusion of the rotating part 1.3 disperses the impact load, significantly improving the service life of the core buffer component and reducing maintenance costs and replacement frequency. Finally, the inclusion of the anti-crack buffer part 1.22 reduces the impact force on the bamboo by extending the stress time, making the bamboo less prone to deformation or cracking during impact, thus ensuring the integrity of the bamboo. Therefore, this bamboo-stopping device as a whole has the advantages of good buffering effect, high durability, and high protection of bamboo, making it very suitable for solving the need for low-cost, high-efficiency bamboo descent mentioned in the background art, and contributing to the effective utilization of bamboo resources and ecological environmental protection.

[0049] In the description of this specification, the references to terms such as "embodiment," "basic embodiment," "preferred embodiment," "other embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0051] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A buffer structure for bamboo transported from the mountains, characterized in that: Including: The rigid receiving part (1.1) has a receiving surface (1.11) facing the bamboo output direction, and the receiving surface (1.11) has a spreading surface (1.11a) formed on the outer periphery of the part in contact with the bamboo. A buffer portion (1.2) is disposed on the side of the rigid support portion (1.1) away from the support surface (1.11), and the buffer portion (1.2) includes a part that undergoes elastic deformation when impacted by bamboo.

2. The buffer structure according to claim 1, characterized in that: It also includes a rotating part (1.3), which is provided with a rotating shaft (1.31). The receiving surface (1.11) has a rotational stroke around the rotating shaft (1.31) and forms different bamboo impact positions on the rotational stroke.

3. The buffer structure according to claim 2, characterized in that: One end of the rotating shaft (1.31) is fixed to the middle of the rigid bearing part (1.1), and the shaft of the rotating shaft (1.31) is rotatably connected to a connecting seat (1.32).

4. The buffer structure according to claim 1, characterized in that: The buffer section (1.2) has a gradient buffer section (1.21) with decreasing elasticity along the impact direction of the bamboo.

5. The buffer structure according to claim 4, characterized in that: Along the impact direction of the bamboo, the gradient buffer section (1.21) is composed of a solid elastic layer (1.21a) and a porous elastic layer (1.21b) in sequence.

6. The buffer structure according to claim 1, characterized in that: The buffer section (1.2) includes a crack-resistant buffer section (1.22) which has a compression stroke that is compressed when impacted by bamboo.

7. The buffer structure according to claim 3, characterized in that: The buffer section (1.2) includes a crack-resistant buffer section (1.22) which has a compression stroke that is compressed when impacted by bamboo.

8. The buffer structure according to claim 7, characterized in that: The anti-breakage buffer (1.22) is a spring arranged around the rotating shaft (1.31), and the compression stroke of the spring is in line with the axial direction of the rotating shaft (1.31).

9. The buffer structure according to claim 8, characterized in that: The spring is disposed between the rigid receiving part (1.1) and the connecting seat (1.32).

10. A bamboo-stopping device, characterized in that: The bamboo material is cushioned using the cushioning structure described in any one of claims 1 to 9.

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