A quick clamping and positioning device suitable for extravehicular environment

Abstract

The present application relates to a kind of fast clamping positioning device suitable for extravehicular environment, including handle clamping mechanism and alignment constraint component.Astronauts through the operation handle, prompting handle clamping mechanism to open clamping space, convenient to put into flexible equipment surface both sides, alignment constraint component is realized with extravehicular flexible equipment accurate alignment by shape concave-convex matching;When astronauts release operation handle, handle clamping mechanism is automatically closed clamping space, under the action of mechanism self-closing energy storage spring, it is automatically clamped on the surface of flexible equipment, effectively prevent clamping tool from drifting off product surface.The present application solves the technical problem of the operability that astronauts conveniently use and effectively constrain product surface in extravehicular environment, realizes the operability of maintenance replacement by improving the rigidity of extravehicular flexible equipment, ensures the long-term safe operation of space station.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of space maintenance, and relates to a quick clamping and positioning device suitable for an extravehicular environment. BACKGROUND

[0002] With the development of space technology in China, space maintenance tasks in the extravehicular environment involving astronauts will increase day by day.

[0003] In view of the fixing requirement of the loose shape of the extravehicular flexible equipment of the space station, clamping needs to be added to the surface of the extravehicular equipment to assist in increasing the rigidity of the surface of the extravehicular equipment and facilitate subsequent maintenance operations. In view of the characteristics of the loose shape of the specific extravehicular flexible equipment, in order to ensure that the equipment shape has a certain rigidity, the technical problem of the operability of conveniently using and effectively restraining the surface of the product in the extravehicular environment by astronauts needs to be solved. SUMMARY

[0004] The technical problem solved by the application is to overcome the shortcomings of the prior art, propose a quick clamping and positioning device suitable for an extravehicular environment, solve the technical problem of the operability of conveniently using and effectively restraining the surface of the product in the extravehicular environment by astronauts, and realize the operability of maintenance and replacement by improving the rigidity of the extravehicular flexible equipment, thereby ensuring the long-term safe operation of the space station.

[0005] The technical solution of the application is as follows:

[0006] A quick clamping and positioning device suitable for an extravehicular environment comprises a handle clamping mechanism and a positioning restraint component; the handle clamping mechanism comprises a clamping support, a pressing plate handle, a fixed handle, a cross adapter rod, a closed energy storage spring, a connecting rod and a closed bottom plate.

[0007] The pressing plate handle and the fixed handle are both frame structures, and the lower end surface center of the fixed handle is fixed on the positioning restraint component through the clamping support; the clamping support is a cylindrical structure, and the upper and lower frame beams of the fixed handle are processed with through holes, the lower end and the side wall of the pressing plate handle pass through the through holes, and the lower end surface center of the pressing plate handle is connected with the upper end of the connecting rod through the cross adapter rod; the connecting rod is located inside the clamping support, and the lower end of the connecting rod is fixed with the closed bottom plate through the positioning restraint component; the closed energy storage spring is located inside the clamping support and is sleeved on the connecting rod, and the connecting rod is provided with a spring limiting ring; the positioning restraint component is used for matching and positioning with the extravehicular flexible equipment.

[0008] Preferably, the positioning restraint component comprises a feature positioning plate and an observation plate; the observation plate is fixed with the clamping support, and the feature positioning plate is fixed on the upper surface of the closed bottom plate; the feature positioning plate is provided with a boss matched with the protrusion on the surface of the extravehicular flexible equipment.

[0009] Preferably, a window is processed on the observation plate, so as to facilitate the determination of the positioning relationship between the positioning plate and the shape characteristics of the extravehicular flexible equipment during the operation process.

[0010] Preferably, the lower end of the closed energy storage spring is fixed on the clamping support.

[0011] Preferably, the closed bottom plate is of a frame structure, and the height of the side connected with the connecting rod is greater than the height of the cantilever end of the opposite side.

[0012] Preferably, the material of the closed bottom plate is titanium alloy.

[0013] Preferably, the material of the alignment constraint part is laminated fiber plate.

[0014] An application of a quick clamping and positioning device suitable for extravehicular environment, comprising:

[0015] The astronaut holds the pressing plate handle, and pushes the closed bottom plate and the characteristic alignment plate to open through the connecting rod.

[0016] The astronaut places the extravehicular flexible equipment into the space between the observation plate and the characteristic alignment plate, and performs complementary matching alignment through the protrusion of the extravehicular flexible equipment and the boss of the characteristic alignment plate.

[0017] The astronaut releases the pressing plate handle after confirming effective alignment through the observation port.

[0018] The closed bottom plate and the characteristic alignment plate are automatically closed under the resetting elastic force of the closed energy storage spring, so as to realize the fixed constraint of the movement degree of freedom of the extravehicular flexible equipment.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] (1) The application achieves the characteristics of quick and accurate alignment of the tool through the complementarity of the alignment constraint part and the surface shape features of the flexible equipment.

[0021] (2) The application uses the operation of the astronaut to open the handle clamping mechanism, facilitates the placement of the flexible equipment surface on both sides, and uses the automatic closing characteristics of the handle clamping mechanism to effectively prevent the clamping tool from drifting away from the product surface, solves the technical problem of operability of conveniently using and effectively constraining the product surface of the astronaut in the extravehicular environment, realizes the operability of maintenance and replacement by improving the rigidity of the extravehicular flexible equipment, and ensures the long-term safe operation of the space station. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of a quick clamping and positioning device suitable for extravehicular environment.

[0023] Figure 2 It is a schematic diagram of the composition of the handle clamping mechanism.

[0024] Figure 3 It is a schematic diagram of the open state of the handle clamping mechanism.

[0025] Figure 4 This is a schematic diagram of the closed state of the handle clamping mechanism;

[0026] Figure 5 This is a schematic diagram of the alignment constraint components;

[0027] Figure 6 This is a schematic diagram of the feature alignment plate;

[0028] Figure 7 This is a schematic diagram illustrating the alignment and constraint components and the surface of the external flexible equipment.

[0029] Figure 8 This is a schematic diagram illustrating the alignment and constraint components and the surface of the external flexible equipment.

[0030] Figure 9 A schematic diagram of the fixing part of the fast clamping and positioning device;

[0031] Figure 10 A schematic diagram of the moving parts of the rapid clamping and positioning device;

[0032] Figure 11 The flowchart shows the operation of the fast clamping and positioning device, where (a) is the non-operation state, (b) is the open state of the closed base plate and the feature alignment plate relative to the observation plate, and (c) is the automatic closing state.

[0033] Figure 12 This is a schematic diagram of the operating distance of the fast clamping and positioning device, where (a) is the operating distance when pressing down and (b) is the distance after automatic closing. Detailed Implementation

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] This invention provides an extravehicular environment clamping and positioning device suitable for astronauts to grip. For example... Figure 1 As shown, the device consists of two parts: an alignment constraint component and a handle clamping mechanism.

[0036] like Figure 2 As shown, the handle clamping mechanism consists of a clamping bracket, a pressure plate handle, a fixed handle, a cross-shaped adapter rod, a closed energy storage spring, a connecting rod, and a closed base plate.

[0037] like Figure 5 and 6 As shown, the alignment constraint component includes a feature alignment plate and an observation plate.

[0038] The fixed handle and the pressing handle are frame structures, and the lower end surface of the fixed handle is fixed to the observation plate through a clamping support; the clamping support is a cylindrical structure, and the upper and lower frame beams of the fixed handle are provided with through holes, the lower end of the pressing handle and the side wall pass through the through holes, and the lower end surface of the pressing handle is connected to the upper end of a connecting rod through a cross-shaped adapter rod, the connecting rod is located inside the clamping support, and the lower end of the connecting rod is fixed to a closing bottom plate through an alignment constraint component; the closing energy storage spring is located inside the clamping support and is sleeved on the connecting rod, the connecting rod is provided with a spring limiting ring, and the lower end of the closing energy storage spring is fixed to the clamping support. The alignment constraint component is used for matching alignment with the extravehicular flexible equipment. The alignment constraint component comprises a feature alignment plate and an observation plate; the observation plate is fixed to the clamping support, and the feature alignment plate is fixed to the upper surface of the closing bottom plate. The feature alignment plate is provided with three feature matching bosses according to the concave-convex features of the surface shape of the extravehicular flexible equipment, as shown in Figure 6 . The feature alignment plate and the shape features of the extravehicular flexible equipment are complementary matched, and the alignment validity can be confirmed, as shown in Figure 7 . The observation plate is installed on the upper surface of the extravehicular flexible equipment to form an up-down freedom degree constraint, the left-right freedom degree constraint is formed through the shape feature complementarity, and finally the extravehicular flexible equipment is fixed. The observation plate is also designed with an observation port, through which the alignment relationship between the alignment plate and the shape features of the extravehicular flexible equipment can be determined in the operation process, and the alignment precision alignment can be confirmed, as shown in Figure 8 .

[0039] The closing bottom plate is made of a metal material with a small thermal expansion coefficient, and the closing bottom plate and the feature alignment plate form a movement whole, the closing bottom plate ensures the overall rigidity and deformation amount of the alignment plate through material properties and frame configuration design, so as to meet the stability under the condition of 200℃ alternating temperature difference in the extravehicular environment. In one embodiment, the closing bottom plate is made of titanium alloy material, the closing bottom plate is a frame structure, and the height of one side connected with the connecting rod is greater than the height of the cantilever end of the other side. The total area of the upper surface of the closing bottom plate (including the area of the opening) is greater than 80% of the area of the lower surface of the feature alignment plate.

[0040] The observation plate and the feature alignment plate are made of insulating materials with high friction coefficient, so that when the clamping and positioning device contacts the extravehicular equipment, the product charge state is not affected and the safety of the user of the clamping and positioning device is protected. In one embodiment, the observation plate and the feature alignment plate are made of pressure-bearing fiber plates.

[0041] The main structures such as the fixed handle, the pressing handle and the clamping support are made of aluminum alloy materials for aerospace, which have the characteristics of light weight and high strength.

[0042] Taking the clamping support as the force bearing reference, the handle is pinched downward, the closing bottom plate is pushed downward through the cross-shaped connecting rod and the connecting rod, and the closing energy storage spring inside the clamping support is compressed, as shown in Figure 3 .

[0043] After releasing the handle, the push rod moves upward under the action of the closing energy spring, driving the closing bottom plate to restore the initial closing position, as shown in Figure 4 .

[0044] In the present application, the astronaut squeezes the handle of the pressing plate to make the cross connecting rod push the connecting rod to open the clamping space of the handle clamping mechanism, facilitating the placement of the flexible equipment on both sides of the surface; when the astronaut releases the handle, the handle clamping mechanism automatically closes the clamping space, and under the action of the self-closing energy spring of the mechanism, it is automatically clamped on the surface of the flexible equipment, effectively preventing the clamping tool from drifting away from the product surface.

[0045] In view of the concave-convex features of the surface of the extravehicular flexible equipment, the feature alignment plate is designed at the front end of the tool, and the concave-convex features of the feature alignment plate and the flexible equipment are complementary, and the accuracy of the tool alignment is confirmed by the complementary matching between the features.

[0046] In view of the observation requirement of the tool alignment constraint condition, an observation port is designed above the feature alignment plate at the front end of the tool, which facilitates the astronaut to confirm the complementary matching between the front end design of the tool and the features of the flexible equipment by visual method.

[0047] A quick clamping and positioning device suitable for extravehicular environment, which is mainly composed of a fixed part and a moving part when operated by an astronaut.

[0048] The fixed handle, clamping bracket and observation plate form the fixed part, which does not move during the operation of the astronaut clamping and positioning device, as shown in Figure 9 .

[0049] The pressing plate handle, cross connecting rod, connecting rod, closing bottom plate and feature alignment plate form the moving part, which will move up and down relative to the fixed part during the operation of the astronaut clamping and positioning device, as shown in Figure 10 .

[0050] The operation process of the clamping device of the present application is as follows:

[0051] The astronaut squeezes the fixed handle and the pressing plate handle, and pushes the closing bottom plate and the feature alignment plate to open, as shown in Figure 11 (b) of Figure 12 (a).

[0052] The astronaut places the extravehicular flexible equipment into the space between the observation plate and the feature alignment plate, and performs alignment by complementary matching between the shape features of the extravehicular flexible equipment and the feature bosses of the alignment plate;

[0053] The astronaut releases the handle after confirming effective alignment through the observation port;

[0054] The closing bottom plate and the feature alignment plate are automatically closed under the reset elastic force of the closing energy storage spring, and the movement freedom of the extravehicular flexible device is fixed and constrained. Figure 11 In the (c), Figure 12 In the (b).

[0055] The application is a kind of fast clamping positioning device suitable for extravehicular environment, which is an important guarantee for astronauts to quickly position and effectively clamp the surface of extravehicular flexible device in extravehicular environment, can realize precise positioning and effective operation of astronauts in extravehicular maintenance, solve the technical problem of convenient use and effective constraint of product surface of astronauts in extravehicular environment, realize the operability of maintenance and replacement by improving the rigidity of extravehicular flexible device, and ensure the long-term safe operation of space station.

[0056] The contents not described in detail in the specification of the application belong to the known technology of the person skilled in the art.

Claims

1. A quick clamping positioning device for extravehicular environment, characterized in that: The handle clamping mechanism and the alignment constraint component; the handle clamping mechanism comprises a clamping support, a pressing plate handle, a fixed handle, a cross adapter rod, a closing energy storage spring, a connecting rod and a closing bottom plate; The pressing plate handle and the fixed handle are both frame structures, and the lower end surface center of the fixed handle is fixed on the alignment constraint component through the clamping support; the clamping support is a cylindrical structure, and the upper and lower frame beams of the fixed handle are processed with through holes, the lower end and the side wall of the pressing plate handle pass through the through holes, and the lower end surface center of the pressing plate handle is connected with the upper end of the connecting rod through the cross adapter rod; the connecting rod is located in the clamping support, and the lower end of the connecting rod passes through the alignment constraint component and is fixed with the closing bottom plate; the closing energy storage spring is located in the clamping support and is sleeved on the connecting rod, and the connecting rod is provided with a spring limiting ring; the alignment constraint component is used for matching and aligning with the extravehicular flexible equipment.

2. A quick clamping positioning device for extravehicular environment according to claim 1, characterized in that: The alignment constraint component comprises a feature alignment plate and an observation plate; the observation plate is fixed with the clamping support, and the feature alignment plate is fixed on the upper surface of the closing bottom plate. The feature alignment plate is provided with a boss matched with the surface protrusion of the extravehicular flexible equipment.

3. A quick clamping positioning device for use in an extravehicular environment according to claim 2, wherein: The observation plate is processed with a window, which facilitates the determination of the alignment relationship between the alignment plate and the extravehicular flexible equipment in the operation process.

4. The quick clamping positioning device for extravehicular environment according to claim 1, characterized in that: The lower end of the closing energy storage spring is fixed on the clamping support.

5. A quick clamping positioning device for use in an extravehicular environment according to claim 1, wherein: The closing bottom plate is a frame structure, and the height of the side connected with the connecting rod is greater than the height of the cantilever end of the opposite side.

6. A quick clamping positioning device for use in an extravehicular environment according to claim 1, wherein: The material of the closing bottom plate is titanium alloy.

7. A quick clamping positioning device for use in an extravehicular environment according to claim 1, wherein: The material of the alignment constraint component is laminated fiber plate.

8. Use of a quick clamping positioning device suitable for extravehicular environment, characterized in that, The quick clamping and positioning device suitable for extravehicular environment is realized by the device of claim 3, comprising: The astronaut holds the pressing plate handle, and pushes the closing bottom plate and the feature alignment plate to open through the connecting rod; The astronaut puts the extravehicular flexible equipment into the space between the observation plate and the feature alignment plate, and performs complementary matching and alignment through the protrusion of the extravehicular flexible equipment and the boss of the feature alignment plate; The astronaut releases the pressing plate handle after confirming effective alignment through the observation port; The closing bottom plate and the feature alignment plate are automatically closed under the resetting elastic force of the closing energy storage spring, so as to realize the fixed constraint of the movement degree of freedom of the extravehicular flexible equipment.

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