A shock isolation device for ensuring high-precision installation of equipment and a processing method thereof

Abstract

The present invention provides an impact isolation device for ensuring high-precision installation of equipment, including a loading bracket, an equipment end bracket, a metal rubber damper, a process pad, an adjustment gasket and a fastener. The loading bracket is installed on the spacecraft structure, and the equipment end bracket is installed on the loading bracket through the metal rubber damper, the process pad and the adjustment pad. The processing method is: first, the loading bracket and the equipment end bracket are processed according to the drawings and a combined processing allowance is reserved; secondly, the loading bracket is combined with the spacecraft structure to process the equipment end bracket installation surface; thirdly, the equipment end bracket is installed on the loading bracket through the metal rubber damper, the process pad and the adjustment pad to ensure that there is no gap between the equipment end bracket and the loading bracket; thirdly, the equipment installation surface of the equipment end bracket is combined and processed; finally, the process pad and the adjustment pad are removed. The device and processing method meet the installation requirements of low impact load, high precision and rigidity of spacecraft equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace vehicle product assembly design, and in particular to an impact isolation device for ensuring high-precision installation of equipment and a processing method thereof. Background Art

[0002] Each spacecraft of the manned space station Phase III uses a linear explosive strip consisting of an expansion tube and a double groove plate to connect and separate from the rocket. Although it can ensure good connection rigidity, strength and separation reliability, it causes the impact load transmitted by the rocket to the space station cabin to increase from 6000g when the strap is separated and unlocked during the manned space flight Phase II to about 13000g. The large impact environment has a significant impact on the function and performance of the instruments and equipment on the space station. Therefore, it is urgent to carry out shock isolation design for the installation of the product to ensure the environmental adaptability of the product. However, due to the high-precision installation requirements of some cabin equipment, this requires that the shock isolation device can not only ensure good equipment installation rigidity and installation accuracy, but also have the ability to reduce the impact load. In addition, the interfaces of instruments and equipment that need to be disassembled and assembled by astronauts on orbit cannot be changed, and shock reduction cannot be achieved through various installation methods such as gaskets and rubber pads that are easy to fall out. It is necessary to study new high-precision installation shock isolation devices. Summary of the invention

[0003] The object of the present invention is to provide an impact isolation device and a processing method thereof for ensuring high-precision installation of equipment, which can not only adapt to the installation mechanical interface of the cabin equipment and ensure high-precision installation of the equipment, but also meet the needs of equipment shock reduction.

[0004] The technical solution of the present invention is: to provide an impact isolation device for ensuring high-precision installation of equipment, including a loading bracket, an equipment end bracket, a metal rubber shock absorber, a process pad, an adjustment pad and a fastener;

[0005] The loading bay bracket is installed on the spacecraft structure, and the equipment-end bracket is installed on the loading bay bracket through the metal rubber damper and fastener a; the equipment is installed on the equipment-end bracket; when the equipment-end bracket equipment mounting surface is assembled and processed, the process pad, adjustment gasket and fastener b are installed between the equipment-end bracket and the loading bay bracket.

[0006] Furthermore, the loading bracket is provided with no less than 3 threaded holes a, and the threaded holes a are located on the mounting surface of the metal rubber damper; the loading bracket is provided with no less than 2 threaded holes b, and the threaded holes b are located on the mounting surface of the process pad.

[0007] Furthermore, the equipment end bracket is provided with a plurality of through holes c, the through holes c have the same diameter and thickness, and have requirements on precision;

[0008] The through hole c is provided with two end faces, which respectively cooperate with the metal rubber damper, and the metal rubber damper and the fastener a pass through the through hole c; the equipment end bracket is provided with multiple through holes d, and the through holes d are located on the equipment installation surface, and a support plate nut is provided on the back of the equipment installation surface; the size and position of the through hole d and the support plate nut are matched with the installation interface of the cabin equipment; the equipment end bracket is provided with an ear piece, and a through hole e is provided on the ear piece; the position, number and size of the through hole e are matched with the threaded hole b of the cabin bracket.

[0009] Furthermore, the metal rubber shock absorber has impact resistance and connection stiffness, and the type and quantity of the metal rubber shock absorber are jointly determined according to the impact reduction requirements of the tank loading products and the environmental test conditions of the tank loading products.

[0010] Furthermore, the process pad is provided with two parallel surfaces, one of which cooperates with the ear piece of the equipment end bracket, and the other parallel surface cooperates with the installation surface of the process pad of the loading bracket; a through hole f is provided at the center of the process pad, and the size of the through hole f matches the size of the threaded hole b of the loading bracket, and the process pad is installed between the loading bracket and the equipment end bracket through the fastener b.

[0011] Furthermore, the adjustment gasket is provided with two parallel surfaces, and the thickness between the two parallel surfaces is 0.02 mm; a notch is provided from the center to the edge of the adjustment gasket, and a handle is provided on the other side opposite to the notch.

[0012] Furthermore, the through hole c of the equipment end bracket is clamped in the middle of the metal rubber damper, and the metal vibration damping pads of the metal rubber damper are distributed on both sides of the through hole c.

[0013] Another technical solution of the present invention provides a method for processing an impact isolation device to ensure high-precision installation of equipment, comprising the following steps:

[0014] Step 1: The loading bracket and the equipment end bracket are processed according to the drawings and a combined processing allowance is reserved;

[0015] Step 2: installing the cabin bracket on the spacecraft structure;

[0016] The third step is to process the cabin bracket together with the spacecraft structure to process the metal rubber damper mounting surface, threaded hole a, process pad mounting surface and threaded hole b; after the combined processing, the metal rubber damper mounting surface, threaded hole a, process pad mounting surface and threaded hole b meet the accuracy index requirements;

[0017] Step 4: clamp the through hole c of the equipment-end bracket between the metal vibration-damping pads of the metal rubber damper, and pass the fastener a through the through hole c of each component of the metal rubber damper and the equipment-end bracket, and install the equipment-end bracket and the metal rubber damper on the metal rubber damper mounting surface and threaded hole a of the cabin bracket. Tighten the fastener a with a fixed force as required to ensure that the internal components of the metal rubber damper fit and are installed in place;

[0018] Step 5: Place the process pad between the process pad installation surface of the loading bracket and the ear piece of the equipment end bracket, and sequentially pass the fastener b through the through hole e of the equipment end bracket and the through hole f of the process pad, and screw it into the threaded hole b of the loading bracket, without tightening the fastener b;

[0019] Step 6: Place the process pad close to the installation surface of the process pad of the loading bracket, measure the gap between the process pad and the ear piece of the equipment end bracket, insert the adjustment pad, adjust the gap to ensure that the gap is less than 0.02mm, and tighten the fastener b to the required force;

[0020] Step 7: Processing the equipment mounting surface of the equipment end bracket together with the cabin bracket and the spacecraft structure to the required accuracy;

[0021] Step 8: Remove the fastener b connected to the process pad, and take out the process pad and the adjustment pad;

[0022] Step 9: Install the device on the device installation surface of the device end bracket.

[0023] The impact isolation device and processing method thereof for ensuring high-precision installation of equipment provided by the present invention have the following beneficial effects:

[0024] 1) According to the mass, center of mass position, shock reduction and vibration isolation requirements of the loading equipment, by selecting appropriate metal vibration damping pads and the number of connected shock absorbers, it can be ensured that the shock reduction index requirements are met and the product response in the vibration environment is within the required range;

[0025] 2) Ensure the installation accuracy of the equipment by setting process blocks, adjusting gaskets, and combined processing;

[0026] 3) It can adapt to the mechanical interface of the loading product, without changing the product interface or adding extra gaskets, thus achieving the impact reduction requirements;

[0027] 4) The device materials are all metal materials, and no non-metal materials such as rubber pads are used. This can better maintain the system characteristics and adapt to the external space environment of the spacecraft.

[0028] The present invention provides an impact isolation device for ensuring high-precision installation of equipment, which can not only reduce impact, but also ensure the loading accuracy of the product. It has been verified by force, heat and other tests, and has good accuracy assurance effect during use, and can be widely used in various satellites and spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The invention will be further described below in conjunction with the accompanying drawings:

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a shock isolation device for ensuring high-precision installation of equipment provided in an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the exploded three-dimensional structure of a shock isolation device for ensuring high-precision installation of equipment provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the three-dimensional structure of a cabin loading bracket provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the three-dimensional structure of a device-end bracket provided in an embodiment of the present invention;

[0034] Figure 5 A schematic cross-sectional view of the metal rubber shock absorber after installation provided by an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of a three-dimensional structure of a process pad provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the three-dimensional structure of an adjusting gasket provided in an embodiment of the present invention.

[0037] Among them, 1. loading bracket, 1a. threaded hole a, 1b. metal rubber shock absorber installation surface, 1c. threaded hole b, 1d. process pad installation surface, 2. equipment end bracket, 2a. through hole c, 2b. through hole c diameter, 2c. through hole c thickness, 2d. through hole c end face a, 2e. through hole c end face b, 2f. through hole d, 2g. equipment installation surface, 2h. support plate nut, 2i. ear piece, 2j. through hole e, 3. metal rubber shock absorber, 3a. steel sleeve a, 3b. metal vibration damping pad, 3c. limiting sleeve, 3d. limiting gasket, 4. process pad, 4a. pad plane a, 4b. pad plane b, 4c. through hole f, 5. adjustment gasket, 5a. gasket plane a, 5b. gasket plane b, 5c. notch, 5d. handle, 6. fastener a, 7. fastener b. DETAILED DESCRIPTION

[0038] The impact isolation device and its processing method for ensuring high-precision installation of equipment proposed by the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] As attached Figures 1-2 As shown, an impact isolation device for ensuring high-precision installation of equipment is composed of a cabin bracket 1, an equipment end bracket 2, a metal rubber damper 3, a process pad 4, an adjustment pad 5, and fasteners 6 to 7. The cabin bracket 1 is installed on the spacecraft structure, the equipment end bracket 2 is installed on the cabin bracket 1 through the metal rubber damper 3 and fasteners a4, and the equipment is installed on the equipment end bracket 2.

[0040] As attached Figures 1-2 As shown in FIG. 3 , when the equipment mounting surface 2e of the equipment end bracket 2 is assembled and processed, the process pad 4 , the adjustment gasket 5 , and the fastener b7 are installed between the equipment end bracket 2 and the loading bracket 1 .

[0041] As attached Figure 3 As shown, the loading bracket 1 is provided with 4 threaded holes a1a, which are located on the metal rubber damper mounting surface 1b. The loading bracket 1 is provided with 2 threaded holes b1c, which are located on the process pad mounting surface 1d.

[0042] As attached Figure 4 , 5 As shown, the equipment end bracket 2 is provided with 4 through holes c2a, and the diameter 2b and thickness 2c of the through holes c are the same, and there are requirements on the accuracy. The through hole c2a is provided with two end faces 2d and 2f. The equipment end bracket 2 is provided with 4 through holes d2f, and the through hole d2f is located on the equipment installation surface 2g, and a support plate nut 2h is provided on the back. The size and position of the through hole d2f and the support plate nut 2h are matched with the installation interface of the cabin equipment. The equipment end bracket 2 is provided with an ear piece 2i, and a through hole e2j is provided on the ear piece 2i. The position, number and size of the through hole e2j match the threaded hole b1c of the cabin bracket.

[0043] As attached Figure 5As shown, the metal rubber shock absorber 3 is composed of two steel sleeves 3a, two metal vibration damping pads 3b, a limiting sleeve 3c, and a limiting gasket 3d. The two steel sleeves 3a are respectively clamped on the end face a2d and the end face b2e of the through hole c. The two metal vibration damping pads 3b are respectively clamped between the steel sleeve 3a and the limiting sleeve 3c, and between the steel sleeve 3a and the limiting gasket 3d. The limiting sleeve is installed on the metal rubber shock absorber installation surface of the loading bracket and passes through the through hole side b. The fastener a6 passes through the limiting gasket 3d and the limiting sleeve 3c to fix the metal rubber shock absorber 3 and the equipment end bracket 2 on the metal rubber shock absorber installation surface 1b of the loading bracket. The impact resistance characteristics, connection stiffness and quantity of the metal shock absorber 3 are jointly determined by the impact reduction requirements of the loading product and the environmental test conditions of the loading product.

[0044] As attached Figures 1-2 As shown in Figures 6 and 7, the process pad 4 has two parallel surfaces 4a and 4b, the pad plane a4a cooperates with the equipment end bracket ear 2i, the pad plane b4b cooperates with the loading bracket process pad installation surface 1d, and a through hole f4c is provided at the center of the process pad 4. The size of the through hole f4c matches the size of the threaded hole b1c of the loading bracket. The process pad 4 is installed between the loading bracket process pad installation surface 1d and the equipment end bracket ear 2i by the fastener b7.

[0045] As attached Figures 1-2 As shown in Figures 7 and 8, the adjusting gasket 5 has two parallel surfaces 5a and 5b, and the thickness between the gasket plane a5a and the gasket plane b5b is generally 0.02 mm. A notch 5c is provided from the center to the edge of the adjusting gasket 5, which is used to be inserted between the equipment bracket ear 2i and the process pad 4 to avoid the fastener b7. A handle 5d is provided on the other side of the adjusting gasket 5, which is convenient for the operator to hold the adjusting gasket 5 and insert it between the equipment bracket ear 2i and the process pad 4.

[0046] like Figures 1 to 7 As shown, a method for processing an impact isolation device for ensuring high-precision installation of equipment includes the following steps:

[0047] In the first step, the loading bracket 1 and the equipment end bracket 2 are processed according to the drawings and a combined processing allowance is reserved.

[0048] The second step is to install the cabin bracket 1 on the spacecraft structure.

[0049] The third step is to process the cabin bracket 1 with the spacecraft structure to produce the metal rubber damper mounting surface 1b, threaded hole a1a, process pad mounting surface 1d and threaded hole b1d. After the combined processing, the metal rubber damper mounting surface 1b, threaded hole a1a, process pad mounting surface 1d and threaded hole b1c meet the accuracy index requirements.

[0050] The fourth step is to clamp the through hole c2a of the equipment end bracket between the metal rubber shock absorber metal vibration damping pad 3b, and pass the fastener a6 through the components of the metal rubber shock absorber 3 and the through hole c2a of the equipment end bracket. Install the equipment end bracket 2 and the metal rubber shock absorber 3 on the mounting surface 1b and the threaded hole a1a of the metal rubber shock absorber of the cabin bracket. Tighten the fastener a6 with a fixed force as required to ensure that the internal components of the metal rubber shock absorber 3 fit and are installed in place.

[0051] The fifth step is to place the process pad 3 between the process pad installation surface 1d of the loading bracket and the equipment end bracket ear piece 2i, and pass the fastener b7 through the equipment end bracket through hole e2j and the process pad through hole f4c in sequence, and screw it into the threaded hole b1c of the loading bracket. The fastener b7 is not tightened.

[0052] The sixth step is to place the process pad 4 close to the process pad installation surface 1d of the loading bracket, measure the gap between the process pad 4 and the equipment end bracket ear 2i, insert the adjustment gasket 5, adjust the gap to ensure that the gap is less than 0.02mm, and tighten the fastener b7 to fix the force as required.

[0053] The seventh step is to process the mounting surface of the cabin bracket 1 and the spacecraft structure assembly equipment end bracket 2g to the required accuracy.

[0054] Step 8: Remove the fastener b7 connected to the process pad 4, and take out the process pad 4 and the adjustment pad 5.

[0055] Step 9. Install the device on the device mounting surface 2g of the device end bracket.

[0056] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

[0057] The contents not described in detail in this specification belong to the prior art known to those skilled in the art. It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A shock isolation device for ensuring high-precision installation of equipment, characterized in that: Including loading bracket, equipment end bracket, metal rubber damper, process pad, adjustment gasket and fasteners; The loading bay bracket is installed on the spacecraft structure, and the equipment-end bracket is installed on the loading bay bracket through the metal rubber damper and fastener a; the equipment is installed on the equipment-end bracket; when the equipment-end bracket equipment mounting surface is assembled and processed, the process pad, adjustment gasket and fastener b are installed between the equipment-end bracket and the loading bay bracket.

2. The impact isolation device for ensuring high-precision installation of equipment according to claim 1, characterized in that: The loading bracket is provided with no less than 3 threaded holes a, and the threaded holes a are located on the mounting surface of the metal rubber damper; the loading bracket is provided with no less than 2 threaded holes b, and the threaded holes b are located on the mounting surface of the process pad.

3. The impact isolation device for ensuring high-precision installation of equipment according to claim 1 or 2, characterized in that: The equipment end bracket is provided with a plurality of through holes c, the diameters and thicknesses of the through holes c are the same, and the precision is required; The through hole c is provided with two end faces, which respectively cooperate with the metal rubber damper, and the metal rubber damper and the fastener a pass through the through hole c; the equipment end bracket is provided with multiple through holes d, and the through holes d are located on the equipment installation surface, and a support plate nut is provided on the back of the equipment installation surface; the size and position of the through hole d and the support plate nut are matched with the installation interface of the cabin equipment; the equipment end bracket is provided with an ear piece, and a through hole e is provided on the ear piece; the position, number and size of the through hole e are matched with the threaded hole b of the cabin bracket.

4. The impact isolation device for ensuring high-precision installation of equipment as claimed in claim 3, characterized in that: The metal rubber shock absorber has impact resistance and connection stiffness, and the type and quantity of the metal rubber shock absorber are jointly determined according to the impact reduction requirements of the tank loading products and the environmental test conditions of the tank loading products.

5. The impact isolation device for ensuring high-precision installation of equipment as claimed in claim 3, characterized in that: The process pad is provided with two parallel surfaces, one of which cooperates with the ear piece of the equipment end bracket, and the other parallel surface cooperates with the installation surface of the process pad of the loading bracket; a through hole f is provided in the center of the process pad, and the size of the through hole f matches the size of the threaded hole b of the loading bracket, and the process pad is installed between the loading bracket and the equipment end bracket through the fastener b.

6. The impact isolation device for ensuring high-precision installation of equipment as claimed in claim 3, characterized in that: The adjusting gasket is provided with two parallel surfaces, and the thickness between the two parallel surfaces is 0.02mm; a notch is provided from the center to the edge of the adjusting gasket, and a handle is provided on the other side opposite to the notch.

7. The impact isolation device for ensuring high-precision installation of equipment as claimed in claim 3, characterized in that: The through hole c of the equipment end bracket is clamped in the middle of the metal rubber damper, and the metal vibration damping pads of the metal rubber damper are distributed on both sides of the through hole c.

8. A method for processing a shock isolation device for ensuring high-precision installation of equipment, applied to the shock isolation device for ensuring high-precision installation of equipment as claimed in any one of claims 3 to 7, characterized in that: The steps include: Step 1: The loading bracket and the equipment end bracket are processed according to the drawings and a combined processing allowance is reserved; Step 2: installing the cabin bracket on the spacecraft structure; The third step is to process the cabin bracket together with the spacecraft structure to process the metal rubber damper mounting surface, threaded hole a, process pad mounting surface and threaded hole b; after the combined processing, the metal rubber damper mounting surface, threaded hole a, process pad mounting surface and threaded hole b meet the accuracy index requirements; Step 4: clamp the through hole c of the equipment-end bracket between the metal vibration-damping pads of the metal rubber damper, and pass the fastener a through the components of the metal rubber damper and the through hole c of the equipment-end bracket. Install the equipment-end bracket and the metal rubber damper on the mounting surface and threaded hole a of the metal rubber damper of the cabin bracket. Tighten the fastener a with a fixed force as required to ensure that the internal components of the metal rubber damper fit and are installed in place. Step 5: Place the process pad between the process pad installation surface of the loading bracket and the ear piece of the equipment end bracket, and sequentially pass the fastener b through the through hole e of the equipment end bracket and the through hole f of the process pad, and screw it into the threaded hole b of the loading bracket, without tightening the fastener b; Step 6: Place the process pad close to the installation surface of the process pad of the loading bracket, measure the gap between the process pad and the ear piece of the equipment end bracket, insert the adjustment pad, adjust the gap to ensure that the gap is less than 0.02mm, and tighten the fastener b to the required force; Step 7: Processing the equipment mounting surface of the equipment end bracket together with the cabin bracket and the spacecraft structure to the required accuracy; Step 8: Remove the fastener b connected to the process pad, and take out the process pad and the adjustment pad; Step 9: Install the device on the device installation surface of the device end bracket.

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