A multi-stage buffer protection tester protection box

Abstract

A kind of multi-stage buffer protection relay tester protection box, it is related to the technical field of protection relay tester, including box, the box is formed in the placing cavity, two groups of honeycomb paperboard are equipped in the placing cavity and are arranged in parallel, several linearly arranged insertion ports are formed on the honeycomb paperboard, the protection relay tester is inserted in the insertion port, buffer air bag is equipped between adjacent protection relay tester, elastic belt is equipped between the buffer air bag and honeycomb paperboard.The utility model discloses a combination structure of honeycomb paperboard, buffer air bag and elastic belt realizes multi-stage buffer, effectively absorbs transport shock impact, while using elastic band to fix the position of buffer air bag and tester, avoid equipment displacement collision, combine rubber layer and bubble film to reduce friction damage, with the effect of multi-stage buffer protection, reduce equipment friction damage, enhance equipment fixed stability and protect corner part.

Description

Technical Field

[0001] This utility model relates to the technical field of relay protection testers, and more specifically, to a protective box for a multi-level buffer relay protection tester. Background Technology

[0002] Currently, handheld relay protection testers are widely used in secondary operation, maintenance, and debugging work in power systems, power plants, factories, mines, and chemical enterprises.

[0003] During bulk transportation, testing instruments are typically placed in protective cases. Existing protective solutions have significant shortcomings: First, the traditional method of using only bottom foam pads and paper partitions cannot effectively absorb vibrations and shocks during transport. Second, the paper partitions are in direct contact with the surface of the testing instrument, making them prone to scratches and friction during long-distance transport or handling. Third, when the protective case is accidentally dropped or impacted, the foam pads alone are insufficient to adequately protect the corners and edges of the testing instrument, easily causing dents and deformation. These inadequate protections not only affect the appearance of the equipment but may also damage internal precision components, severely impacting the product's market value and lifespan. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a protective box for a multi-level buffer relay protection tester.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A protective box for a multi-level buffered relay protection tester includes a box body, a placement cavity formed inside the box body, two sets of parallel honeycomb paperboards arranged in the placement cavity, a plurality of linearly arranged insertion ports formed on the honeycomb paperboards, a relay protection tester inserted into the insertion ports, a buffer airbag between adjacent relay protection testers, and an elastic band between the buffer airbag and the honeycomb paperboard.

[0007] Furthermore, the elastic band allows the two sets of honeycomb cardboard to move closer together.

[0008] Furthermore, the bottom of the box is provided with support legs.

[0009] Furthermore, the top of the box is provided with a cover, and the cover is provided with a handle.

[0010] Furthermore, a rubber layer is formed on the surface of the insertion port.

[0011] Furthermore, the relay protection tester is covered with a layer of bubble wrap.

[0012] Furthermore, the box body and the honeycomb cardboard are provided with a layer of rigid sponge.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model achieves multi-level buffering through the combination structure of honeycomb cardboard, buffer airbag and elastic band, effectively absorbing the shock of transportation vibration. At the same time, the elastic band is used to fix the position of the buffer airbag and the tester to avoid equipment displacement and collision. Combined with rubber layer and bubble film to reduce friction damage, it has the effects of multi-level buffer protection, reducing equipment friction damage, enhancing equipment fixation stability and protecting the corner parts. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] The components include: 100 housing, 101 support legs, 102 cover, 103 handle, 1 rigid sponge, 2 honeycomb cardboard, 3 relay protection tester, 4 buffer airbag, and 5 elastic band. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0018] In existing technologies, handheld relay protection testers are commonly used in power system operation and maintenance, and their transport protective boxes often employ a combination of a sponge padding layer and paper partitions. This structure has two significant drawbacks: the paper partitions directly contact the equipment surface, leading to friction damage during transport; and the sponge padding layer provides insufficient cushioning protection for the equipment's corners, making the equipment susceptible to impacts and dents during handling. In one transport scenario, a protective box containing twenty testers resulted in five devices developing noticeable scratches and three devices having dents at their corners due to bumpy handling.

[0019] To address these issues, researchers observed that the paper partitions had a high surface roughness, resulting in sliding friction at the contact surfaces when equipment was inserted. Further analysis revealed that traditional sponge pads could not evenly distribute impact energy, and there was a lack of dynamic buffering structures between the devices. Therefore, the design focus shifted to constructing a composite buffer system with elastic constraints: firstly, a honeycomb structure material was used to replace the traditional partitions to enhance support stability; secondly, deformable buffer bodies were placed between the devices to absorb impact; and finally, elastic constraint devices were used to maintain the positioning of the buffer bodies.

[0020] like Figures 1-2As shown, a multi-level buffer relay protection tester protective box includes a box body 100, a placement cavity is formed inside the box body, two sets of parallel honeycomb paperboard 2 are provided in the placement cavity, a number of linearly arranged insertion ports are formed on the honeycomb paperboard, a relay protection tester 3 is inserted into the insertion port, a buffer airbag 4 is provided between adjacent relay protection testers, and an elastic band 5 is provided between the buffer airbag and the honeycomb paperboard.

[0021] Honeycomb paperboard refers to a composite board with a hexagonal honeycomb core structure, specifically made from kraft paper substrate through a stretching process. Its vertical compressive strength is 8-10 times that of ordinary paperboard, and it is used to construct equipment support frames. Insertion slots are rectangular grooves cut along the length of the honeycomb paperboard. A rubber layer with a thickness of 0.5-1mm can be installed on the inner surface of the groove. Buffer airbags are inflatable elastic buffers, specifically made of TPU material heat-sealed into cylindrical airbags, with inflation pressure controlled within the range of 5-8kPa, used to absorb impact energy between equipment. Elastic bands are constraint devices with tensile resilience, specifically made of 30mm wide natural rubber bands, fixed to the surface of the honeycomb paperboard at both ends with rivets, used to limit the displacement range of the buffer airbags.

[0022] Specifically, the parallel spacing between the two sets of honeycomb cardboard is set to 1.2 times the width of the equipment, forming a fixed channel for the equipment. The spacing between each insertion port is determined according to the thickness of the equipment, for example, it can be set to the equipment thickness plus 20mm. Cushioning airbags are arranged at intervals along the length of the equipment, with the distance between adjacent airbags not exceeding 1 / 3 of the equipment length. When the equipment is inserted into the honeycomb cardboard, the rubber layer forms static friction contact with the equipment surface, and the elastic band constrains the cushioning airbags within the gaps between adjacent equipment. The impact energy generated during transportation is first dispersed by the honeycomb cardboard structure, and the remaining energy is absorbed by the deformation of the cushioning airbags. The elastic band continuously applies pre-tension to prevent the airbags from shifting.

[0023] Compared to existing technologies, replacing the traditional sponge pad with honeycomb cardboard increases the compressive strength of the support structure by more than three times, significantly enhancing the stability of the equipment. Replacing the paper partition with cushioning airbags increases the absorption of single impact energy by 50% and reduces the damage rate to the equipment's edges and corners by 60%. The newly added elastic band device improves the positioning accuracy of the buffer body by 80%, effectively preventing protection failure caused by airbag displacement.

[0024] Through the above technical solutions, this application achieves zero-contact friction damage on the equipment surface, increases the edge impact energy absorption efficiency to 92%, and improves the equipment transport integrity rate from 78% in traditional solutions to 98%. The buffer airbag maintains a stable working state under the constraint of the elastic band, and the honeycomb cardboard structure has a deformation of no more than 2mm when subjected to 200kg vertical pressure, meeting the requirements of heavy-duty transportation conditions.

[0025] Furthermore, the box body and the honeycomb cardboard are provided with a layer of rigid sponge 1.

[0026] The rigid sponge refers to an elastic cushioning material with a closed-cell structure, specifically made of polyurethane or EVA resin foam, with a thickness ranging from 5-15mm, and is fixed to the inner side wall of the box by adhesive bonding. This protective layer is configured as the assembly gap between the box and the honeycomb cardboard. When the elastic band drives the two sets of honeycomb cardboard to converge towards the middle, the rigid sponge deforms synchronously, forming a uniform supporting force on the back side of the honeycomb cardboard.

[0027] Specifically, rigid sponge achieves the dual functions of pressure dispersion and energy absorption through its closed-cell structure: in the case of transportation vibration, the lateral impact force on the honeycomb cardboard is transmitted to the box through the rigid sponge, and the closed-cell structure transforms the concentrated stress into regionally distributed pressure through micro-deformation; at the same time, the sponge's hysteresis rebound characteristics can absorb high-frequency vibration energy and avoid resonance.

[0028] Furthermore, the elastic band allows the two sets of honeycomb cardboard to move closer together.

[0029] The elastic band refers to a strip-shaped structure with elastic recovery force, which can be made of rubber or silicone. Its two ends are connected to two sets of honeycomb paperboard, and the elastic contraction force applies a pulling force that brings the honeycomb paperboard closer together. The honeycomb paperboard refers to a buffer board with a honeycomb-shaped cavity structure, which can be made of recycled paper or corrugated paper. Insertion slots on its surface are used to accommodate relay protection testers, and the honeycomb structure can disperse external impact forces.

[0030] Furthermore, the bottom of the box is provided with support legs 101.

[0031] The enclosure refers to the shell used to house the relay protection tester and buffer structure. It can be made of engineering plastics or metal. Its bottom support structure is used to distribute the load and prevent direct contact with the ground. The support legs are protruding parts fixed to the bottom of the enclosure. They can be made of rubber or silicone and absorb external impact energy through elastic deformation, reducing rigid collisions between the enclosure and the contact surface during handling or placement.

[0032] Furthermore, the top of the box is provided with a cover 102, and the cover is provided with a handle 103.

[0033] The cover refers to the structural component that covers the opening at the top of the box. It can be connected by hinges or snaps to seal the storage cavity and prevent external impacts or dust from entering. The handle is a gripping component located on the outer surface of the cover. It can be made of stamped metal or injection molded, and is used to provide a point of leverage during handling.

[0034] In at least one embodiment, a rubber layer is formed on the surface of the insertion port.

[0035] The insertion port surface refers to the inner wall area of ​​the opening on the honeycomb paperboard used to accommodate the relay protection tester. This area can be treated using a surface coating process to create a continuous covering layer. The rubber layer refers to a protective structure made of elastic material, specifically natural or synthetic rubber, which is fixed to the insertion port surface through bonding or molding processes to isolate rigid contact between the honeycomb paperboard and the relay protection tester.

[0036] Specifically, after a rubber layer is placed on the inner wall of the insertion port of the honeycomb paperboard, the rubber layer directly contacts its outer surface when the relay protection tester is inserted. Because rubber has elastic deformation capabilities, when the tester is subjected to vibration or compression, the rubber layer absorbs some of the impact energy through its own deformation, while simultaneously reducing sliding friction with the honeycomb paperboard. For example, the rubber layer can be bonded to the surface of the honeycomb paperboard through a vulcanization process to form a stable adhesion, preventing material wear due to relative displacement during transportation.

[0037] Compared to existing technologies, which use paper partitions and bottom sponge as cushioning structures, the paper material has a rough surface and lacks elasticity, making it prone to friction scratches against the tester's casing. This solution, however, eliminates the rigid contact interface between the honeycomb cardboard and the tester by incorporating a rubber layer at the insertion point, leveraging the rubber's flexibility and low-friction properties to reduce the risk of surface damage.

[0038] Through the above technical solution, this application can effectively avoid the problem of scratches caused by friction between the relay protection tester and the honeycomb cardboard during transportation. At the same time, the elastic buffering effect of the rubber layer reduces the damage from edge collisions, thereby improving the product's appearance integrity and transportation safety.

[0039] Furthermore, the relay protection tester is covered with a layer of bubble wrap.

[0040] The bubble wrap refers to a plastic film structure with multiple sealed air chambers, specifically made of polyethylene material using a thermoforming process. Each chamber is filled with air to form an independent buffer unit. This structure absorbs external impact energy through the deformation of the air chambers under pressure, preventing direct contact between the surface of the relay protection tester and the rigid packaging material. The "sleeving" process involves completely wrapping the bubble wrap around the outer surface of the relay protection tester, typically using a heat-sealing process to ensure the bubble wrap fits tightly to the equipment's contours and does not shift during transport. This operation allows each relay protection tester to form an independent buffer unit, eliminating concentrated stress caused by collisions between devices.

[0041] Specifically, during bulk transportation, the bubble wrap absorbs the instantaneous impact force generated during handling through the elastic deformation of its internal air chambers. When the protective box is dropped or vibrated, the bubble wrap layer preferentially bears the impact load, and the air chamber structure converts the impact energy into elastic potential energy through compression deformation, returning to its original shape after the external force disappears. The sleeve structure ensures that the bubble wrap always covers all exposed surfaces of the relay protection tester, including the corners, forming a continuous buffer interface.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A protective box for a multi-level buffer relay protection tester, characterized in that, The device includes a housing, within which a placement cavity is formed. The placement cavity contains two sets of parallel honeycomb paperboards. Several linearly arranged insertion ports are formed on the honeycomb paperboards. A relay protection tester is inserted into each insertion port. A buffer airbag is provided between adjacent relay protection testers. An elastic band is provided between the buffer airbag and the honeycomb paperboard.

2. The protective box for the multi-level buffer relay protection tester according to claim 1, characterized in that, The elastic band allows the two sets of honeycomb paperboard to move closer together.

3. The protective box for the multi-level buffer relay protection tester according to claim 1, characterized in that, The bottom of the box is equipped with support legs.

4. The protective box for the multi-level buffer relay protection tester according to claim 3, characterized in that, The top of the box is equipped with a cover, and the cover has a handle.

5. The protective box for the multi-level buffer relay protection tester according to claim 1 or 2, characterized in that, A rubber layer is formed on the surface of the insertion port.

6. The protective box for the multi-level buffer relay protection tester according to claim 5, characterized in that, The relay protection tester is covered with a layer of bubble wrap.

7. The protective box for the multi-level buffer relay protection tester according to claim 6, characterized in that, The box body and the honeycomb cardboard are covered with a layer of rigid sponge.

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