A digging protection device for transplanting of forest and fruit seedling

Abstract

The utility model belongs to the field of forest fruit nursery stock transplanting technology especially relates to a kind of excavating protection device for forest fruit nursery stock transplanting, including bottom plate and universal wheel, the bottom plate upper portion is provided with excavating protection structure, the excavating protection structure includes protection mechanism and auxiliary mechanism, the protection mechanism includes protection box, protective box, guide rod, moving plate, fixed bolt one, the protection box top and protective box bottom are interconnected.The excavating protection device for forest fruit nursery stock transplanting realizes that the height of clamping plate can be flexibly changed, adapts to different length of nursery stock;Symmetrical clamping plate spacing can be adjusted simultaneously, the main stem of different thickness of nursery stock can be stably clamped, so that different size of nursery stock can be clamped and fixed quickly and conveniently, and the nursery stock is prevented from shaking and colliding during transfer (reduce lateral branch breakage rate), so that the root of nursery stock is always soaked in water, root system is continuously in wet environment, and the rate of fibrous root dryness can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of forest and fruit seedling transplantation technology, specifically a digging and protection device for forest and fruit seedling transplantation. Background Technology

[0002] Transplanting of fruit and forest seedlings is a crucial step in forestry planting, orchard renewal, and landscaping. Its core objective is to preserve the integrity of the root system and the stability of the soil ball to the greatest extent possible during seedling transplantation, thereby ensuring the survival rate after transplanting. Therefore, digging and protective devices are needed to transport and transplant the seedlings during the transplanting process.

[0003] Existing excavation protection devices typically involve placing seedlings into the device for transport and transplanting. However, in actual use, they cannot quickly and easily clamp and secure seedlings of different sizes. Furthermore, during transport, the roots of the seedlings cannot be soaked in water. Over long periods of transport, the seedlings are prone to excessive moisture evaporation, leading to wilting and death, thus reducing the efficiency of the excavation protection device.

[0004] Therefore, we urgently need to provide a digging and protection device for transplanting fruit and forest seedlings. Utility Model Content

[0005] The purpose of this utility model is to provide a digging and protection device for transplanting fruit seedlings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a digging protection device for transplanting fruit seedlings, comprising a base plate and casters, wherein a digging protection structure is provided above the base plate; The excavation protection structure includes a protection mechanism and an auxiliary mechanism; The protective mechanism includes a protective box, a guide rod, a movable plate, and a fixing bolt. The top and bottom of the protective box are connected to each other. The inner wall of the protective box is connected to one end of the guide rod. The outer wall of the guide rod is slidably connected to the inner wall of the movable plate. The inner wall of the movable plate is threadedly connected to the outer wall of the fixing bolt. A connecting plate is fixedly installed at one end of the movable plate. A threaded rod is threadedly connected to the inner wall of the connecting plate. A clamping plate is rotatably connected to one end of the threaded rod. A fixing plate is fixedly installed on the inner wall of the protective box. A placement plate is fixedly installed at one end of the fixing plate.

[0007] A further improvement is that there are four guide rods, which are symmetrically distributed on the inner wall of the protective box. An adjustment hole is opened on one side of each guide rod, and one end of each fixing bolt is threaded to the inner wall of the adjustment hole, so that the adjustment can be made quickly and conveniently, and the seedlings can be clamped and fixed better, thus enabling better transportation and transplanting.

[0008] A further improvement is that the number of movable plates is four, and the movable plates are symmetrically distributed on the outer walls of the four guide rods. The number of connecting plates is two, and the connecting plates are symmetrically distributed between the four movable plates. This allows for quick and convenient adjustment of the height of the clamping plates, thereby enabling the clamping and fixing of seedlings of different lengths.

[0009] A further improvement is that there are two clamping plates, which are symmetrically distributed on one side of the two connecting plates. The surface of the placement plate is provided with filter holes. There are also two fixing plates, which are symmetrically distributed on the outside of the placement plate. This allows for quick and convenient clamping and fixing of seedlings of different sizes, thus enabling better transportation and transplanting.

[0010] A further improvement is that the auxiliary mechanism includes a mounting plate, a filter screen, a limiting plate, two fixing bolts, and a water pump. The inner side of the mounting plate is in contact with both sides of the filter screen. The bottom of the filter screen is connected to the top of the limiting plate. The inner wall of the limiting plate is threadedly connected to the outer wall of the two fixing bolts. The inner wall of the protective box is connected to one end of the water pump. One end of the water pump is connected to a water guide pipe. One end of the water guide pipe is connected to a nozzle. One end of the nozzle is fixedly mounted with a connecting plate.

[0011] A further improvement is that a limiting hole is opened at the bottom of the mounting plate, and the top of the second fixing bolt is threaded to the inner wall of the limiting hole. There are two water guide pipes, which are symmetrically distributed on both sides of the protective box. There are several nozzles, which are symmetrically distributed on one side of the four connecting plates. This allows for quick and convenient spraying of liquid onto the seedlings and quick and convenient disassembly and assembly of the filter screen, thus enabling better transportation and transplanting work.

[0012] A further improvement is that the bottom of the base plate is connected to the top of the caster wheel, the top of the base plate is connected to the bottom of the protective box, the inner wall of the protective box is connected to both sides of the mounting plate, and the inner wall of the protective box is connected to one side of the connecting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This excavation and protection device for transplanting fruit and forest seedlings features an adjustable structure consisting of a guide rod, a movable plate, and a fixing bolt. This structure allows for flexible adjustment of the clamping plate height. Loosening the fixing bolt allows the movable plate to slide along the guide rod, accommodating seedlings of different lengths (from seedlings to mature seedlings with a diameter at breast height of over 10cm). Simultaneously, rotating the threaded rod on the connecting plate adjusts the spacing of the symmetrical clamping plates, ensuring stable clamping of seedling trunks of varying thicknesses (applicable to diameters from 5cm to 20cm). This enables quick and convenient clamping and securing of seedlings of different sizes, preventing shaking and collisions during transport (reducing the breakage rate of lateral branches). The placement plate inside the protective box has filter holes on its surface, allowing stored water to permeate through these holes to the top of the placement plate, keeping the seedling roots constantly submerged in water and maintaining a consistently moist environment, effectively reducing the rate of root drying.

[0014] 2. This excavation and protection device for transplanting fruit and forest seedlings, through an auxiliary mechanism, enables a water pump to deliver clean water from the protection box to multiple nozzles via double-sided water pipes. The nozzles are evenly distributed on the inner wall of the protection box, allowing for all-around spraying of the seedling branches and leaves, preventing wilting caused by excessive leaf water evaporation. Furthermore, the water flowed back through the bottom of the protection box after spraying, and the water flowing back to the protection box is filtered through a filter screen to intercept leaf debris, soil impurities, etc., brought in during the spraying process, preventing impurities from clogging the water pump or nozzles. At the same time, it enables the recycling of clean water, and the filter screen can be quickly and easily installed and removed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the protection mechanism of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the protection mechanism of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the auxiliary mechanism of this utility model. Figure 1 ; Figure 6 This is a schematic diagram of the auxiliary mechanism of this utility model. Figure 2 .

[0016] In the diagram: 1. Base plate; 2. Casters; 3. Protective mechanism; 301. Protective box; 302. Protective housing; 303. Guide rod; 304. Moving plate; 305. Fixing bolt one; 306. Connecting plate one; 307. Threaded rod; 308. Clamping plate; 309. Fixing plate; 310. Placement plate; 4. Auxiliary mechanism; 401. Mounting plate; 402. Filter screen; 403. Limiting plate; 404. Fixing bolt two; 405. Water pump; 406. Water guide pipe; 407. Nozzle; 408. Connecting plate two. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-6 This utility model provides a technical solution: Example 1: A digging and protection device for transplanting fruit seedlings includes a base plate 1 and casters 2, with a digging and protection structure provided on the top of the base plate 1. The excavation protection structure includes protection mechanism 3 and auxiliary mechanism 4; The protective mechanism 3 includes a protective box 301, a protective box 302, a guide rod 303, a movable plate 304, and a fixing bolt 305. The top of the protective box 301 is connected to the bottom of the protective box 302. The inner wall of the protective box 302 is connected to one end of the guide rod 303. The outer wall of the guide rod 303 is slidably connected to the inner wall of the movable plate 304. The inner wall of the movable plate 304 is threadedly connected to the outer wall of the fixing bolt 305. A connecting plate 306 is fixedly installed at one end of the movable plate 304. A threaded rod 307 is threadedly connected to the inner wall of the connecting plate 306. A clamping plate 308 is rotatably connected to one end of the threaded rod 307. A fixing plate 309 is fixedly installed on the inner wall of the protective box 301. A placement plate 310 is fixedly installed at one end of the fixing plate 309. In this embodiment, there are four guide rods 303, which are symmetrically distributed on the inner wall of the protective box 302. An adjustment hole is provided on one side of the guide rod 303, and one end of the fixing bolt 305 is threaded to the inner wall of the adjustment hole, so that the adjustment can be made quickly and conveniently, and the seedlings can be clamped and fixed better, thus enabling better transportation and transplanting. Furthermore, there are four movable plates 304, which are symmetrically distributed on the outer walls of the four guide rods 303. There are two connecting plates 306, which are symmetrically distributed between the four movable plates 304. This allows for quick and convenient adjustment of the height of the clamping plate 308, thereby enabling the clamping and fixing of seedlings of different lengths. Furthermore, there are two clamping plates 308, which are symmetrically distributed on one side of the two connecting plates 306. The surface of the placement plate 310 is provided with filter holes. There are two fixing plates 309, which are symmetrically distributed on the outside of the placement plate 310. This allows for quick and convenient clamping and fixing of seedlings of different sizes, thus enabling better transportation and transplanting.

[0019] Placement plate and liquid related details Liquid type and dosage: The liquid stored in the protective box 301 should be clean water or a seedling-specific nutrient solution with a concentration of 0.1%-0.3% (such as a water-soluble fertilizer containing nitrogen, phosphorus and potassium). Avoid using pure tap water (it needs to be left to stand for 24 hours to remove chlorine). The liquid dosage should be such that "the liquid level covers 1 / 2 to 2 / 3 of the root ball of the seedling", and should not exceed 5cm above the top surface of the placement board 310 (to prevent the root ball from floating and causing the roots to detach from the soil).

[0020] Filter hole specifications: The filter holes on the surface of the placement plate 310 are circular through holes with a diameter of 3-5mm and a spacing of 2-3cm (holes that are too small are prone to clogging, while holes that are too large are prone to soil leakage; the spacing must ensure the stability of the root ball); the edges of the filter holes are rounded (R1-R2mm) to avoid sharp edges scratching the roots.

[0021] Clamping and Adjustment Component Details Threaded rod 307 parameters: material is 304 stainless steel (corrosion resistant), diameter 8-12mm, length 15-25cm (adapted to the width of the protective box); the end of the threaded rod is welded with a Φ30mm anti-slip knob (knurled surface treatment), which can be manually adjusted without tools. The knob is connected to the clamping plate 308 through a deep groove ball bearing (model 6202) (to prevent the clamping plate from rotating with the threaded rod during adjustment).

[0022] Optimized Clamping Board 308: The clamping board has an arc-shaped structure (the radius of curvature matches that of common seedling trunks, such as 5-15cm), and a 3-5mm thick nitrile rubber buffer layer (Shore hardness 50-60HA, which is both anti-slip and prevents damage to the bark from compression) is pasted on the inner side; the clamping board is 10-15cm high to ensure a contact area with the trunk ≥20cm². 2 (To prevent excessive local pressure).

[0023] Guide rod 303 and adjustment hole: The guide rod is made of solid round steel with a diameter of 10-12mm and chrome-plated surface (to reduce sliding friction); the adjustment hole is a threaded hole with a diameter of 5-6mm and a hole spacing of 5cm (to ensure height adjustment accuracy). The adjustment range is "30-80cm from the bottom of the protective box 302" (suitable for seedlings with a height of 1-3m).

[0024] When it is necessary to transport and transplant fruit seedlings, the operator places the seedling roots into the placement plate 310 inside the protective box 301. Since the protective box 301 contains liquid, and the surface of the placement plate 310 has filter holes, the liquid can enter the placement plate 310, thus immersing the seedling roots in the liquid. At this time, the threaded rod 307 is rotated to move it along the inner wall of the connecting plate 306. The movement of the threaded rod 307 drives the clamping plate 308 to move, allowing for quick and convenient clamping and fixing of seedlings of different sizes. To clamp and fix seedlings of different lengths, rotate the fixing bolt 305 to move it along the inner wall of the moving plate 304. The movement of the fixing bolt 305 allows it to be pulled out from one side of the guide rod 303, thus removing the limiting fixation on the moving plate 304. At this time, pull the connecting plate 306 to make the moving plate 304 slide on the guide rod 303, thereby quickly and conveniently adjusting the height of the clamping plate 308, which can clamp and fix seedlings of different lengths, thus enabling better transportation and transplanting work and making it more convenient for operators to use.

[0025] Seedling Placement and Clamping Process First, fill the protective box 301 with the preset amount of liquid. When placing the seedling, make sure that the center line of the root ball is aligned with the center line of the placement plate 310 (to avoid the root ball cracking due to unilateral force). When adjusting the height of the clamping plate, first loosen the fixing bolts 305 on both sides (loosen symmetrically to avoid tilting the moving plate 304), push the connecting plate 306 to the middle and lower part of the main trunk of the seedling corresponding to the clamping plate 308 (10-15cm away from the soil ball), and then tighten the fixing bolts 305 (tighten until you can't tighten them by hand, then use a Φ10mm open wrench to tighten them another 1 / 4 turn to ensure they are locked firmly). When rotating the threaded rod 307, it is necessary to adjust symmetrically on both sides (rotate 1-2 turns on each side and then switch to the other side) until the buffer layer of the clamping plate is in contact with the trunk. The standard for proper clamping is "no obvious displacement when gently shaking the seedling" (avoid excessive tightness that could damage the bark).

[0026] Adaptation Boundary Description This conservation organization is suitable for forest and fruit seedlings (such as apple seedlings, cherry seedlings, and landscape tree seedlings) with a diameter at breast height of 2-15cm, a height of 1-3m, and a root ball diameter of 20-60cm. Not suitable for "bare-root seedlings transplanted without soil ball" (requires additional root fixing netting) and "large seedlings with a diameter at breast height > 15cm" (the device is not strong enough and requires replacement with thicker guide rods and base plates).

[0027] Example 2: Based on Embodiment 1, the auxiliary mechanism 4 includes a mounting plate 401, a filter screen 402, a limiting plate 403, a second fixing bolt 404, and a water pump 405. The inner side of the mounting plate 401 is in contact with both sides of the filter screen 402. The bottom of the filter screen 402 is connected to the top of the limiting plate 403. The inner wall of the limiting plate 403 is threadedly connected to the outer wall of the second fixing bolt 404. The inner wall of the protective box 301 is connected to one end of the water pump 405. One end of the water pump 405 is connected to a water guide pipe 406. One end of the water guide pipe 406 is connected to a nozzle 407. One end of the nozzle 407 is fixedly installed with a second connecting plate 408. In this embodiment, a limiting hole is provided at the bottom of the mounting plate 401, and the top of the fixing bolt 404 is threaded to the inner wall of the limiting hole. There are two water pipes 406, which are symmetrically distributed on both sides of the protective box 301. There are several nozzles 407, which are symmetrically distributed on one side of the four connecting plates 408. This allows the liquid to be sprayed onto the seedlings quickly and conveniently, and the filter screen 402 can be disassembled and assembled quickly and conveniently, thus enabling better transportation and transplanting work. Furthermore, the bottom of the base plate 1 is connected to the top of the caster wheel 2, the top of the base plate 1 is connected to the bottom of the protective box 301, the inner wall of the protective box 301 is connected to both sides of the mounting plate 401, and the inner wall of the protective box 302 is connected to one side of the connecting plate 408.

[0028] Water pumps and sprinkler systems Water pump 405 parameters: It adopts a 12V DC miniature submersible pump (power 15-30W, flow rate 1-2L / min), waterproof rating IP67 (suitable for liquid environment inside the protection box); a 50mm pre-installed filter screen needs to be installed at the water pump inlet (to prevent large particles of impurities from directly entering the water pump and extend its service life).

[0029] Water guide pipe 406 and nozzle 407: The water guide pipe is a food-grade PVC flexible tube with a diameter of Φ8-12mm (resistant to aging, bending radius ≥5cm); the nozzle is an atomizing nozzle (atomized particle size 50-100μm), with a spray angle of 60°-90°, and a single nozzle coverage area of ​​0.2-0.3m². 2 The distance between adjacent nozzles should be 15-20cm (to ensure that there are no dead corners in the spraying of the seedlings and branches). Filter 402 details Filter parameters: material is nylon 66 mesh (acid and alkali resistant), mesh size is 150-200 mesh (can intercept leaf debris and fine soil particles without affecting water flow back); filter size is "width matches the inner wall of the protective box (e.g., 30-50cm), height is 20-30cm", and the top extends 5cm beyond the liquid surface inside the protective box (to prevent impurities from being introduced when the liquid overflows).

[0030] Disassembly and positioning structure: The inner side of the mounting plate 401 is provided with two Φ5mm positioning protrusions, and the filter screen 402 is provided with corresponding positioning holes (hole diameter Φ5.2mm) on both sides. During installation, the protrusions are aligned with the holes (to ensure that the filter screen is centered and to avoid displacement that would cause impurities to leak from the side); a 1mm thick rubber gasket is pasted on the mating surface of the limiting plate 403 and the mounting plate 401 (to enhance the sealing and prevent unfiltered liquid from seeping in). Operation of spray and filtration systems Before powering on the water pump, ensure that it is completely submerged in the liquid (to avoid dry running and burning out), and that the 406 water pipe is free of bends (to prevent water flow blockage). The spraying frequency should be adjusted according to the ambient temperature: at normal temperature (15-25℃), spray once every 60 minutes for 1 minute each time; at high temperature (>25℃), spray once every 30 minutes for 1.5 minutes each time; at low temperature (<10℃), spray once every 120 minutes for 30 seconds each time (to avoid freezing the roots). Filter maintenance: Check once every 2 hours of operation. If impurities cover more than 1 / 3 of the filter area, stop the machine and disassemble for cleaning (rinse with clean water only, do not use a hard brush to clean, to prevent damage to the screen). When reinstalling after cleaning, ensure that the positioning protrusion is fully engaged with the hole, and then tighten the fixing bolts 404 (tighten until the rubber gasket is slightly deformed, avoid over-tightening and damaging the filter).

[0031] Troubleshooting Tips If the 407 nozzle does not dispense water: First check if the water pipe is bent, then disassemble the nozzle and clean the internal blockage (you can use a Φ1mm steel wire to unclog it). If the water pump is too noisy: check if there are impurities wrapped around the water pump impeller. The water pump needs to be removed and the pre-filter and impeller cleaned (power must be turned off before cleaning to avoid electric shock).

[0032] When it is necessary to transport and transplant fruit seedlings, the operator places the seedling roots into the placement plate 310 inside the protective box 301. Since the protective box 301 contains liquid, and the surface of the placement plate 310 has filter holes, the liquid can enter the placement plate 310, thus immersing the seedling roots in the liquid. The protective mechanism 3 allows for quick and convenient clamping and fixing of seedlings of different sizes and lengths, facilitating better transport and transplanting. During the transport process, the water pump 405 operates to transport the liquid from the protective box 301 to the spray nozzle 407 through the water pipe 406. The liquid is sprayed onto the seedlings through nozzle 407, which helps maintain the seedlings' normal moisture and prevents wilting and withering. The sprayed liquid can be filtered through filter screen 402 to remove impurities and then recycled. When it is necessary to disassemble the filter screen 402, the fixing bolt 404 is rotated to move it inside the limiting plate 403. The movement of the fixing bolt 404 allows it to be pulled out from the bottom of the mounting plate 401, thereby removing the limiting fixation of the filter screen 402 and disassembling it. When it is necessary to install, the above steps are repeated in reverse for better use.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A digging and protection device for transplanting fruit tree seedlings, comprising a base plate (1) and casters (2), characterized in that: An excavation protection structure is provided above the base plate (1); The excavation protection structure includes a protection mechanism (3) and an auxiliary mechanism (4). The protective mechanism (3) includes a protective box (301), a protective box (302), a guide rod (303), a movable plate (304), and a fixing bolt (305). The top of the protective box (301) is connected to the bottom of the protective box (302). The inner wall of the protective box (302) is connected to one end of the guide rod (303). The outer wall of the guide rod (303) is slidably connected to the inner wall of the movable plate (304). The inner wall of the movable plate (304) is threadedly connected to the outer wall of the fixing bolt (305). A connecting plate (306) is fixedly installed at one end of the movable plate (304). A threaded rod (307) is threadedly connected to the inner wall of the connecting plate (306). A clamping plate (308) is rotatably connected to one end of the threaded rod (307). A fixing plate (309) is fixedly installed on the inner wall of the protective box (301). A placement plate (310) is fixedly installed at one end of the fixing plate (309).

2. The excavation and protection device for transplanting fruit seedlings according to claim 1, characterized in that: There are four guide rods (303), which are symmetrically distributed on the inner wall of the protective box (302). An adjustment hole is provided on one side of each guide rod (303), and one end of the fixing bolt (305) is threaded to the inner wall of the adjustment hole.

3. The excavation and protection device for transplanting fruit tree seedlings according to claim 1, characterized in that: The number of movable plates (304) is four, and the movable plates (304) are symmetrically distributed on the outer wall of the four guide rods (303). The number of connecting plates (306) is two, and the connecting plates (306) are symmetrically distributed between the four movable plates (304).

4. The excavation and protection device for transplanting fruit seedlings according to claim 1, characterized in that: There are two clamping plates (308), which are symmetrically distributed on one side of the two connecting plates (306). The surface of the placement plate (310) is provided with filter holes. There are two fixing plates (309), which are symmetrically distributed on the outside of the placement plate (310).

5. The excavation and protection device for transplanting fruit tree seedlings according to claim 1, characterized in that: The auxiliary mechanism (4) includes a mounting plate (401), a filter screen (402), a limiting plate (403), a fixing bolt (404), and a water pump (405). The inner side of the mounting plate (401) is pressed against both sides of the filter screen (402). The bottom of the filter screen (402) is connected to the top of the limiting plate (403). The inner wall of the limiting plate (403) is threaded to the outer wall of the fixing bolt (404). The inner wall of the protective box (301) is connected to one end of the water pump (405). One end of the water pump (405) is connected to a water guide pipe (406). One end of the water guide pipe (406) is connected to a nozzle (407). One end of the nozzle (407) is fixedly installed with a connecting plate (408).

6. The excavation and protection device for transplanting fruit seedlings according to claim 5, characterized in that: The mounting plate (401) has a limiting hole at the bottom. The top of the fixing bolt (404) is threaded to the inner wall of the limiting hole. There are two water pipes (406), which are symmetrically distributed on both sides of the protective box (301). There are several nozzles (407), which are symmetrically distributed on one side of the four connecting plates (408).

7. The excavation and protection device for transplanting fruit seedlings according to claim 1, characterized in that: The bottom of the base plate (1) is connected to the top of the caster wheel (2), the top of the base plate (1) is connected to the bottom of the protective box (301), the inner wall of the protective box (301) is connected to both sides of the mounting plate (401), and the inner wall of the protective box (302) is connected to one side of the connecting plate (408).

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