Adjustable spacing seedling plug positioning device

Abstract

The utility model relates to agricultural seedling raising equipment technical field discloses a kind of adjustable spacing seedling hole tray positioning device, including outer frame, reinforcing rod, inner frame, hole tray, connecting frame, fitting mechanism, lug and buckle assembly, outer frame top is equipped with buckle assembly, inner frame both ends are equipped with lug and are connected with buckle assembly, connecting frame and inner frame are equipped with fitting mechanism between, fitting mechanism includes the inverted trapezoidal block of connecting frame outer wall and the inverted trapezoidal groove of the length direction array opening of inner frame inner wall, inverted trapezoidal block is inserted in inverted trapezoidal groove.The utility model realizes the flexible adjustment of hole tray spacing by fitting mechanism, adapts to different growth needs, realizes tool-free quick disassembly of inner and outer frame using buckle assembly, connection is stable and convenient for later cleaning maintenance, solve the problem that spacing of existing device is not adjustable and disassembly is complicated.

Description

Technical Field

[0001] This utility model relates to the field of seedling tray technology, and in particular to an adjustable spacing seedling tray positioning device. Background Technology

[0002] In modern large-scale agricultural seedling production, seedling trays are typically placed on dedicated positioning frames for centralized management and cultivation. Existing seedling tray positioning devices mostly use fixed-structure grids or slots to hold the trays, meaning the spacing between the trays cannot be changed once manufactured. However, in actual seedling production, as seedlings grow, their leaf extension range gradually increases. If the tray spacing is not adjusted in time, overly dense arrangement can lead to seedlings shading each other, poor ventilation, and consequently, excessive growth or pests and diseases, affecting seedling quality.

[0003] Furthermore, existing positioning device frames are often assembled using standard fasteners such as bolts and nuts. While this connection method is sturdy, the cumbersome disassembly process, which requires thorough cleaning and disinfection of the device after the seedling cycle to prevent residual pathogens, is time-consuming and laborious. Additionally, the fasteners are prone to rust or loss, causing significant inconvenience for daily maintenance.

[0004] Therefore, this utility model proposes an adjustable spacing seedling tray positioning device to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an adjustable spacing seedling tray positioning device, which aims to improve the existing technology where the spacing of the seedling trays is fixed and cannot be adjusted, resulting in an inability to adapt to the growth space requirements of seedlings, and the frame component connection structure is complex, leading to cumbersome disassembly and assembly, and inconvenient cleaning and maintenance.

[0006] To achieve the above objectives, this utility model provides an adjustable spacing seedling tray positioning device, comprising: an outer frame, a reinforcing rod, an inner frame, a seedling tray, a connecting frame, a fitting mechanism, hanging ears, and a buckle assembly; the reinforcing rod is fixedly connected to the inside of the outer frame, the buckle assembly is fixedly installed on the top edge of the outer frame, the inner frame is disposed inside the outer frame, the hanging ears are fixedly connected to both ends of the inner frame respectively, the hanging ears are snapped and fixed to the buckle assembly, the connecting frame is fixedly connected to the top edge of the seedling tray, and the fitting mechanism is provided between the connecting frame and the inner frame.

[0007] The inverted trapezoidal block is fixedly connected to the outer wall of the connecting frame, and the inverted trapezoidal grooves are arrayed along the length direction on the inner side wall of the inner frame. The inverted trapezoidal block is inserted into the inside of the inverted trapezoidal groove. By cooperating with the inverted trapezoidal block and the inverted trapezoidal grooves at different positions, the position of the acupuncture plate inside the inner frame can be adjusted.

[0008] Preferably, the buckle assembly has a structure of a deformation locking post and a limiting plate. The limiting plate is fixedly connected to the top of the deformation locking post, and a deformation groove is provided at the center of the deformation locking post to provide deformation space.

[0009] Preferably, the hanging ear has an installation hole, the deformation locking post passes through the installation hole, and the hanging ear abuts against the bottom surface of the limiting plate and the outer wall of the deformation locking post to achieve the positioning of the inner frame.

[0010] Preferably, the deformation groove is provided through the deformation post along its axial direction, so that the deformation post can contract and deform into the interior space of the deformation groove when it is compressed, which facilitates the installation of the lug.

[0011] Preferably, the cross-sectional shape of the inverted trapezoidal block has an inverted trapezoidal structure that is wider at the top and narrower at the bottom, and the cross-sectional shape of the inverted trapezoidal groove is adapted to the cross-sectional shape of the inverted trapezoidal block so as to achieve locking by utilizing geometric shapes.

[0012] Preferably, the inverted trapezoidal block is embedded vertically from top to bottom into the inverted trapezoidal groove, and the inverted trapezoidal block and the inverted trapezoidal groove cooperate to restrict the horizontal displacement of the acupuncture plate and prevent the acupuncture plate from shaking.

[0013] Preferably, the connecting frame has a rectangular frame structure, and the connecting frame is fixed around the peripheral edge of the cavitary plate to enhance the edge strength of the cavitary plate.

[0014] Preferably, the two ends of the reinforcing rod are fixedly connected between the inner walls of opposite sides of the outer frame, and the reinforcing rod is located below the inner frame to provide auxiliary support.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by arraying inverted trapezoidal grooves along the length direction on the inner side wall of the inner frame and forming an interlocking mechanism with the inverted trapezoidal blocks on the outer side wall of the connecting frame, the problem of fixed and unadjustable spacing between seedling trays in existing seedling devices is solved. This achieves the technical effect of flexibly adjusting the density of the seedling trays according to the growth of seedlings or the planting density requirements of different crops, thus improving the versatility of the device.

[0016] 2. This utility model solves the problems of cumbersome assembly, tool-required and inconvenient disassembly of traditional frame connections by setting a buckle assembly including deformation pins, deformation grooves and limiting plates on the top of the outer frame, which is then fixed in conjunction with the hanging ears at both ends of the inner frame. This achieves the technical effect of tool-free quick assembly and disassembly between the inner and outer frames, which facilitates subsequent cleaning, disinfection and maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the adjustable spacing seedling tray positioning device proposed in this utility model; Figure 2 This is a schematic diagram of the inverted trapezoidal block structure of the adjustable spacing seedling tray positioning device proposed in this utility model; Figure 3 This is a schematic diagram of the hanging ear structure of the adjustable spacing seedling tray positioning device proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] Legend: 1. Outer frame; 2. Reinforcing rod; 3. Inner frame; 4. Hole plate; 5. Connecting frame; 6. Fitting mechanism; 601. Inverted trapezoidal block; 602. Inverted trapezoidal groove; 7. Hanging ear; 8. Buckle assembly; 801. Deformation locking post; 802. Deformation groove; 803. Limiting plate. Detailed Implementation

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

[0020] Reference Figures 1-4 This utility model provides an adjustable spacing seedling tray positioning device, which aims to solve the structural defects in the prior art, such as difficulty in adjusting the spacing of seedling trays, inability to adapt to different seedling growth densities, and cumbersome connection and disassembly of frame components, making cleaning and maintenance inconvenient.

[0021] The main structure of the adjustable-spacing seedling tray positioning device includes an outer frame 1, which serves as the basic support skeleton, and reinforcing rods 2 fixedly connected inside the outer frame 1. The outer frame 1 is made entirely of rigid plastic or rust-resistant metal material with excellent structural strength, forming the mounting base of the entire device and providing stable housing space and physical protection for the internal components. The two ends of the reinforcing rods 2 are fixedly connected to the inner walls of opposite sides of the outer frame 1 by welding or integral injection molding. The reinforcing rods 2 span the internal space of the outer frame 1, and in terms of spatial layout, the reinforcing rods 2 are located below the subsequently installed inner frame 3, thereby providing auxiliary support and significantly enhancing the overall torsional rigidity of the outer frame 1, preventing deformation of the outer frame 1 when handling heavy objects or under pressure.

[0022] An inner frame 3 is set inside the outer frame 1. The outer contour dimensions of the inner frame 3 are designed to be slightly smaller than the internal accommodating dimensions of the outer frame 1, allowing the inner frame 3 to be smoothly embedded and placed within the outer frame 1. The inner frame 3 serves as the core functional carrier, housing and supporting the seedling trays 4, which hold the seedling substrate and seeds. In the connection structure between the inner frame 3 and the outer frame 1, the longitudinal ends of the inner frame 3 are integrally formed or fixedly connected with hanging ears 7, while corresponding fastener components 8 are fixedly installed at the top edge of the outer frame 1. The hanging ears 7 and the fastener components 8 are locked together by a vertical pressing action. This connection method establishes the horizontal and vertical positions of the inner frame 3 within the outer frame 1, forming a stable two-dimensional frame structure system for the device.

[0023] Regarding the fit between the seedling tray 4 and the inner frame 3, a connecting frame 5 is fixedly connected to the top edge of the seedling tray 4. The connecting frame 5 serves as an intermediate connecting transition piece, and its size is adapted to the edge contour of the seedling tray 4. A fitting mechanism 6 is provided between the connecting frame 5 and the inner frame 3. The fitting mechanism 6 is not a single part, but is composed of mutually fitting structural features respectively provided on the connecting frame 5 and the inner frame 3. Through the mechanical cooperation of the fitting mechanism 6, the seedling tray 4 can be suspended or supported inside the inner frame 3, and the fitting mechanism 6 allows the seedling tray 4 to be installed in different horizontal positions, thus providing a physical structural basis for flexible adjustment of the seedling spacing.

[0024] The adjustable spacing seedling tray positioning device also includes an interlocking mechanism 6.

[0025] The fitting mechanism 6 specifically consists of an inverted trapezoidal block 601 fixedly mounted on the connecting frame 5 and an inverted trapezoidal groove 602 formed on the inner frame 3. The outer wall of the connecting frame 5 protrudes outward to form the inverted trapezoidal block 601. This inverted trapezoidal block 601 serves as a convex positioning element, and its number and position are set according to the connection stability requirements, usually symmetrically distributed on both sides of the connecting frame 5. Correspondingly, the inner wall of the inner frame 3 has several inverted trapezoidal grooves 602 arranged in a linear array along its length. These inverted trapezoidal grooves 602 constitute multiple continuous or spaced optional installation positions, providing a multi-level positioning basis for the cavity tray 4.

[0026] In the assembled state, the inverted trapezoidal block 601 on the connecting frame 5 is inserted into the inverted trapezoidal groove 602 on the inner side wall of the inner frame 3. By aligning the inverted trapezoidal block 601 with the inverted trapezoidal groove 602 at different positions on the inner frame 3 and embedding it, the operator can change the relative position of the seedling tray 4 in the inner frame 3. Since the inverted trapezoidal grooves 602 are arranged in an array along the length of the inner frame 3, the spacing between adjacent seedling trays 4 can be flexibly adjusted according to the space requirements for seedling growth or the planting density requirements of different crops. This structural fit not only achieves stable installation of the seedling tray 4, but also gives the device extremely high versatility and ease of adjustment.

[0027] Meanwhile, to achieve a quick and stable connection between the inner frame 3 and the outer frame 1, the buckle assembly 8 on the outer frame 1 includes a vertically extending deformation locking post 801 and a limiting plate 803 fixedly connected to the top of the deformation locking post 801. A deformation groove 802 is provided at the center of the deformation locking post 801, extending axially along the deformation locking post 801 and dividing it into elastic petal-like structures, thus providing the deformation locking post 801 with an inwardly contracting elastic deformation space.

[0028] The mounting lug 7 has an installation hole. During installation, the inner frame 3 is pressed down, and the inner wall of the mounting hole of the lug 7 contacts and presses against the limiting plate 803 at the top of the deformable locking post 801 and the outer side of the post. Under this pressure, the deformable locking post 801 contracts and deforms inward using the internal space provided by the deformation groove 802, reducing its effective outer diameter, allowing the lug 7 to pass smoothly over the limiting plate 803. When the lug 7 is fully pressed down, the deformable locking post 801 elastically resets due to the loss of pressure, returning to its initial open state. At this time, the deformable locking post 801 passes through the mounting hole of the lug 7, and the upper surface of the lug 7 is blocked by the bottom surface of the limiting plate 803. The lug 7 is tightly abutted between the bottom surface of the limiting plate 803 and the contact surface between the outer wall of the deformable locking post 801 and the outer frame 1. This structure utilizes the elastic properties of the material itself to achieve a snap-locking mechanism without the need for additional tools such as screwdrivers. This ensures the stability of the connection and greatly facilitates subsequent disassembly, cleaning, and maintenance.

[0029] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, to utilize gravity for self-locking and prevent accidental horizontal displacement of the seedling tray 4, the cross-sectional shape of the inverted trapezoidal block 601 is designed as an inverted trapezoidal structure, wider at the top and narrower at the bottom. Correspondingly, the cross-sectional shape of the inverted trapezoidal groove 602 perfectly matches the cross-sectional shape of the inverted trapezoidal block 601. This mating structure allows the inverted trapezoidal block 601 to be embedded vertically into the inverted trapezoidal groove 602 from top to bottom, with the inclined surface of the inverted trapezoidal block 601 and the inclined surface of the inverted trapezoidal groove 602 closely fitting together. This fitting forms a mechanical interlocking structure similar to a dovetail groove, and the mating of the inverted trapezoidal block 601 and the inverted trapezoidal groove 602 restricts the horizontal displacement of the seedling tray 4. Unless the seedling tray 4 is manually lifted upwards to release the mating, the seedling tray 4 cannot wobble forward, backward, left, or right, effectively preventing the seedling tray 4 from becoming displaced due to handling and collisions during the seedling cultivation process.

[0030] In another preferred embodiment, the connecting frame 5 is designed as a rectangular frame structure, and the connecting frame 5 is fixed around the peripheral edge of the cavity tray 4. The rectangular frame structure of the connecting frame 5 can evenly distribute the weight of the cavity tray 4 and its internal matrix. By fixing it around the perimeter, it enhances the overall structural strength of the edge of the cavity tray 4, avoids the edge of the cavity tray 4 from cracking due to single-point stress, and also provides a solid and flat mounting base for the inverted trapezoidal block 601, ensuring positioning accuracy.

[0031] As a further preferred embodiment, to enhance the overall load-bearing capacity of the device and prevent the inner frame 3 from deforming under full load, the two ends of the reinforcing rod 2 are respectively fixedly connected between the inner walls of opposite sides of the outer frame 1, and the reinforcing rod 2 is located below the inner frame 3. When the inner frame 3 is installed in place, the reinforcing rod 2 provides additional auxiliary support to the bottom of the inner frame 3, sharing the load-bearing pressure of the hanging lug 7 and the buckle assembly 8. Especially when the weight of the seed tray 4 increases significantly after watering, the reinforcing rod 2 located below can effectively support the inner frame 3, preventing excessive downward bending deformation and ensuring the structural stability and safety of the device during long-term use. Regarding the specific number of reinforcing rods 2, those skilled in the art can set one or more according to the size of the outer frame 1 to achieve the best support effect.

[0032] Regarding the details of the fit between the lug 7 and the buckle assembly 8, the mounting hole diameter of the lug 7 is designed to be slightly larger than the diameter of the rod body after the deformation locking post 801 is reset, but must be smaller than the outer diameter of the limiting plate 803. This dimensional difference ensures that the limiting plate 803 can effectively press the lug 7 onto the outer frame 1, preventing it from falling upwards. At the same time, the deformation locking post 801 is integrally injection molded from engineering plastics (such as PP or ABS) with good resilience properties to ensure that it can maintain sufficient locking force after multiple disassemblies and reassemblies.

[0033] Working principle: This device mainly consists of an outer frame 1 and reinforcing rods 2 fixedly connected to it, forming a basic support structure. An inner frame 3 is placed side-by-side inside the outer frame 1. The working principle is mainly divided into two parts: spacing adjustment and structural installation. Regarding spacing adjustment, a connecting frame 5 is provided on the edge of the seedling tray 4, and the two together are fitted with the inner frame 3 via a fitting mechanism 6. Multiple inverted trapezoidal grooves 602 are linearly arrayed along the length of the inner sidewall of the inner frame 3, while inverted trapezoidal blocks 601 are correspondingly provided on the outer side of the connecting frame 5. During adjustment, the seedling tray 4 is moved horizontally, aligning the inverted trapezoidal blocks 601 with the target inverted trapezoidal groove 602 and embedding them. Utilizing the geometric limiting characteristics of the inverted trapezoidal structure, the inverted trapezoidal blocks 601 are stably fitted inside the inverted trapezoidal groove 602, thereby fixing the relative position of the seedling tray 4 within the inner frame 3. By changing the fitting position, the spacing of the seedling trays 4 can be flexibly adjusted. In terms of component installation and disassembly, the inner frame 3 is fixed to the outer frame 1 by the lugs 7 at its ends and locked by the snap-fit ​​assembly 8. During installation, the lugs 7 are aligned with the snap-fit ​​assembly 8 and pressed down, causing the lugs 7 to exert a squeezing effect on the limiting plate 803 and the column body at the top of the deformation locking post 801. At this time, utilizing the contraction space provided by the deformation groove 802 in the center of the deformation locking post 801, the deformation locking post 801 contracts and deforms inward, thereby passing through the installation hole of the lugs 7. When installed in place, the deformation locking post 801 loses the squeezing force and elastically returns to its original position, so that the lugs 7 are tightly locked between the outer wall of the deformation locking post 801 and the bottom of the limiting plate 803, achieving a stable connection and positioning between the inner frame 3 and the outer frame 1.

Claims

1. An adjustable spacing seedling tray positioning device, comprising: The outer frame (1), reinforcing rod (2), inner frame (3), acupoint plate (4), connecting frame (5), fitting mechanism (6), hanging ear (7), and buckle assembly (8) are provided. The reinforcing rod (2) is fixedly connected to the inside of the outer frame (1). The buckle assembly (8) is fixedly installed on the top edge of the outer frame (1). The inner frame (3) is located inside the outer frame (1). The hanging ear (7) is fixedly connected to both ends of the inner frame (3). The hanging ear (7) is snapped and fixed to the buckle assembly (8). The connecting frame (5) is fixedly connected to the top edge of the acupoint plate (4). The fitting mechanism (6) is provided between the connecting frame (5) and the inner frame (3). The fitting mechanism (6) is characterized in that it includes an inverted trapezoidal block (601) and an inverted trapezoidal groove (602). The inverted trapezoidal block (601) is fixedly connected to the outer wall of the connecting frame (5), and the inverted trapezoidal groove (602) is arrayed along the length direction on the inner wall of the inner frame (3), and the inverted trapezoidal block (601) is inserted into the inside of the inverted trapezoidal groove (602).

2. The adjustable spacing seedling tray positioning device according to claim 1, characterized in that, The buckle assembly (8) includes a deformation locking post (801) and a limiting plate (803). The limiting plate (803) is fixedly connected to the top of the deformation locking post (801), and a deformation groove (802) is provided at the center of the deformation locking post (801).

3. The adjustable spacing seedling tray positioning device according to claim 2, characterized in that, The hanging ear (7) has an installation hole, the deformation locking post (801) passes through the installation hole, and the hanging ear (7) abuts against the bottom surface of the limiting plate (803) and the outer wall of the deformation locking post (801).

4. The adjustable spacing seedling tray positioning device according to claim 2, characterized in that, The deformation groove (802) is provided through the deformation pin (801) along the axial direction. When the deformation pin (801) is compressed, it contracts and deforms into the internal space of the deformation groove (802).

5. The adjustable spacing seedling tray positioning device according to claim 1, characterized in that, The cross-sectional shape of the inverted trapezoidal block (601) is an inverted trapezoidal structure that is wider at the top and narrower at the bottom, and the cross-sectional shape of the inverted trapezoidal groove (602) is adapted to the cross-sectional shape of the inverted trapezoidal block (601).

6. The adjustable spacing seedling tray positioning device according to claim 5, characterized in that, The inverted trapezoidal block (601) is embedded vertically from top to bottom into the interior of the inverted trapezoidal groove (602), and the inverted trapezoidal block (601) and the inverted trapezoidal groove (602) cooperate to restrict the horizontal displacement of the cavity plate (4).

7. The adjustable spacing seedling tray positioning device according to claim 1, characterized in that, The connecting frame (5) is a rectangular frame structure, and the connecting frame (5) is fixed around the peripheral edge of the acupuncture plate (4).

8. The adjustable spacing seedling tray positioning device according to claim 1, characterized in that, The two ends of the reinforcing rod (2) are fixedly connected between the inner walls of opposite sides of the outer frame (1), and the reinforcing rod (2) is located below the inner frame (3).

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