A pre-press shock absorbing device for precision equipment transportation

Abstract

The utility model relates to a pre -compression damping device for precision equipment transportation belongs to transportation damping technical field, the utility model discloses a damping unit, the damping unit includes the upper steel sheet and lower steel sheet of opposite setting, is equipped with the damping pad between the upper steel sheet and lower steel sheet, is equipped with the pre -tensioning piece for adjusting the pre -compression amount between the upper steel sheet and lower steel sheet. The utility model is through the semi -closed cavity for the constraint polyurethane foaming board can only occur vertical direction's deformation, thoroughly solves the lateral rheology problem, through the pre -compression technology matching equipment weight distribution, and the different pre -compression amount is added to the damping unit of different position in array, makes all damping units to best working condition cooperation stress, avoids local overload failure.

Description

Technical Field

[0001] This utility model relates to a pre-compression shock absorption device for transporting precision equipment, belonging to the field of transportation shock absorption technology, and particularly to a shock absorption device for transporting heavy equipment such as servers and precision instruments, specifically a modular shock absorption system based on polyurethane foam pre-compression technology. Background Technology

[0002] Precision equipment is susceptible to damage from vibration and impact during transportation. Existing shock absorption solutions mostly use EPS foam filling or rubber pads. Shock absorption devices using EPS foam have poor deformation recovery capabilities and are prone to plastic deformation and failure after repeated impacts. Shock absorption devices using rubber pads are prone to creep under long-term static pressure, resulting in loss of preload and reduced shock absorption effect.

[0003] To address this issue, Chinese utility model patent application CN202220536565.1 discloses a server rack for buffering and damping server vibration, comprising a mounting frame installed inside the rack; the mounting frame includes four vertical columns; each of the four columns is equipped with a slide rail, on which sliders connected to the server's mounting lugs are slidably mounted; the slide rails are also equipped with damping springs that abut against the upper and lower ends of the sliders; and damping casters are installed at the bottom of the rack. The four front and rear mounting lugs of the server are fixedly mounted to the four sliders, with the upper and lower sides of the sliders elastically supported by damping springs; when the entire rack experiences bumps, swaying, or vibration, the upper and lower damping springs buffer and dampen the sliders, and the damping casters further reduce shock, effectively preventing server damage. However, this type of spring damping is prone to resonance and has poor lateral stability. Utility Model Content

[0004] To address the problems of low damping efficiency, easy failure, and poor stability in existing technologies, this utility model aims to provide a modular damping device that can suppress lateral rheology, achieve precise pressure bearing, and is easy to replace. It suppresses the lateral rheology of polyurethane through a semi-enclosed constraint cavity and matches the weight distribution of the equipment through pre-compression technology, thereby achieving efficient energy absorption and dissipation.

[0005] The technical solution adopted by this utility model is a pre-compression and shock absorption device for transporting precision equipment, including a shock absorption unit. The shock absorption unit includes an upper steel plate and a lower steel plate arranged opposite to each other. A shock absorption pad is provided between the upper steel plate and the lower steel plate, and a pre-tightening member for adjusting the pre-compression amount is provided between the upper steel plate and the lower steel plate.

[0006] As a further embodiment of this utility model, the preload includes a bolt and a nut. One end of the bolt is fixed to the lower steel plate, and the upper steel plate is provided with a reserved hole for the bolt to pass through. The other end of the bolt passes through the upper steel plate and is connected by a nut. The preload is set by adjusting the relative position of the nut on the bolt.

[0007] As a further embodiment of this invention, the shock-absorbing pad is made of polyurethane material.

[0008] As a further embodiment of this utility model, baffles are provided on both sides of the upper steel plate and the lower steel plate, and the baffles work together with the upper steel plate and the lower steel plate to constrain the shock-absorbing pad.

[0009] As a further embodiment of this utility model, the plurality of shock-absorbing units are distributed on the bottom surface of the housing.

[0010] As a further embodiment of this invention, the preload of the damping units at different locations is set to different amounts.

[0011] This utility model discloses a pre-compression shock absorption device for transporting precision equipment. Its advantages are that, compared with the prior art, this utility model, through pre-compression design, can adjust the initial pressure according to the force requirements of different positions of the box, avoiding local over-compression or under-compression and improving the shock absorption effect; the independent shock absorption unit can be replaced individually, reducing maintenance costs; the upper and lower steel plates with baffles constrain the shock absorption pad to only be compressed vertically, significantly improving the efficiency of kinetic energy conversion into internal energy; and the operation is simple, which can be adjusted by bolts and nuts, and can adapt to the pre-compression requirements of equipment of different weights. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the shock absorption device of this utility model installed on the bottom surface of the box; Figure 2 for Figure 1 Exploded view of the shock absorption device.

[0014] As shown in the figure: 1. Bottom surface; 2. Vibration damping unit; 3. Upper steel plate; 4. Lower steel plate; 5. Vibration damping pad; 6. Bolt; 7. Nut; 8. Baffle. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] To further understand the utility model content of this utility model, the technical solution will be further described below in conjunction with specific embodiments.

[0017] Example 1: As Figures 1-2 As shown, this embodiment provides a pre-compression shock absorption device for transporting precision equipment. This embodiment includes a shock absorption unit 2, which comprises an upper steel plate 3 and a lower steel plate 4 arranged opposite to each other. A shock absorption pad 5 is sandwiched between the upper steel plate 3 and the lower steel plate 4. A pre-tightening element for adjusting the pre-compression amount is provided between the upper steel plate 3 and the lower steel plate 4. The shock absorption pad 5 is made of polyurethane foam board with dimensions of 264mm x 90mm x 35mm and a density of 350kg / m³. 3 .like Figure 1 As shown, nine damping units 2 are evenly distributed on the bottom surface 1 of the housing. The preload of the damping units 2 at different positions is set differently. In this embodiment, the preload of the damping units 2 located at the four corners of the housing is set to 400N, and the preload of the other damping units 2 is set to 300N. The nine preloaded damping units 2 are fixed to the bottom surface 1 of the housing with screws. When the performance of a certain damping unit 2 deteriorates, its nut 7 can be removed individually and a new polyurethane foam board can be replaced. There is no need to disassemble other damping units 2 or the housing, resulting in low maintenance costs and convenient replacement.

[0018] Example 2: Figures 1-2 As shown, based on Embodiment 1, as a specific implementation of this embodiment, the preload includes a bolt 6 and a nut 7. One end of the bolt 6 is fixed to the lower steel plate 4, and the upper steel plate 3 has a reserved hole for the bolt 6 to pass through. The other end of the bolt 6 passes through the upper steel plate 3 and is connected by the nut 7. The preload is set by adjusting the relative position of the nut 7 on the bolt 6. Baffles 8 are welded to both sides of the upper steel plate 3 and the lower steel plate 4 along their length. The baffles 8 cooperate with the upper steel plate 3 and the lower steel plate 4 to constrain the shock-absorbing pad 5, so that the polyurethane foam board can only be compressed in the vertical direction, efficiently converting kinetic energy into internal energy. The energy absorption density is increased by more than 70%, which can effectively reduce the vibration and impact during transportation, protect the precision of the equipment, and ensure the safety and stability of the equipment during transportation.

[0019] This invention uses a semi-enclosed cavity to constrain the polyurethane foam board to deform only in the vertical direction, thus completely solving the lateral rheological problem. By using pre-compression technology to match the weight distribution of the equipment, different pre-compression amounts are applied to the damping units 2 at different positions in the array, so that all damping units 2 can work together in the best working state to avoid local overload failure. It has strong stability. Combined with hundreds of tests, the thickness retention rate of the polyurethane foam board is >99%, and there is no permanent deformation.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pre-stressing and shock-absorbing device for transporting precision equipment, comprising a shock-absorbing unit (2), characterized in that, The damping unit (2) includes an upper steel plate (3) and a lower steel plate (4) arranged opposite to each other. A damping pad (5) is provided between the upper steel plate (3) and the lower steel plate (4). A pre-tightening member for adjusting the preload is provided between the upper steel plate (3) and the lower steel plate (4).

2. The pre-compression shock absorption device for transporting precision equipment according to claim 1, characterized in that, The preload includes a bolt (6) and a nut (7). One end of the bolt (6) is fixed on the lower steel plate (4). The upper steel plate (3) has a reserved hole for the bolt (6) to pass through. The other end of the bolt (6) passes through the upper steel plate (3) and is connected by the nut (7). The preload is set by adjusting the relative position of the nut (7) on the bolt (6).

3. The pre-compression shock absorption device for transporting precision equipment according to claim 1, characterized in that, The shock-absorbing pad (5) is made of polyurethane material.

4. A pre-compression shock absorption device for transporting precision equipment according to claim 1, characterized in that, Both sides of the upper steel plate (3) and the lower steel plate (4) are provided with baffles (8), which are used in conjunction with the upper steel plate (3) and the lower steel plate (4) to constrain the shock-absorbing pad (5).

5. A pre-compression shock absorption device for transporting precision equipment according to claim 1, characterized in that, Multiple damping units (2) are distributed on the bottom surface (1) of the box.

6. A pre-compression shock absorption device for transporting precision equipment according to claim 5, characterized in that, The preload of the damping unit (2) at different locations is different.

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