A vacuum suction device

Abstract

The present invention discloses a vacuum suction device, which includes a vacuum adsorption mechanism, a fixing mechanism and a tension applying mechanism. The vacuum adsorption mechanism is configured to be able to suck the part to be tested through the suction port. The fixing mechanism can fix the vacuum suction device on the supporting mechanism. The tension applying mechanism is arranged at the other end of the vacuum suction device along the axial direction of the vacuum suction device, and is connected to the vacuum adsorption mechanism. The vacuum suction device disclosed in the present invention performs a loading test by applying tension to the wall panel. The vacuum suction device is placed on the outside of the wall panel, so that the tester can adjust the tension applied to the part to be tested by pulling the tension applying mechanism.

Description

Technical Field

[0001] The invention relates to the field of test and detection devices, and in particular to a vacuum suction device suitable for a wallboard loading test. Background Art

[0002] Some relevant acceptance standards for aircraft have strict regulations on the appearance of composite materials. For example, the appearance of composite parts such as wall panels should be checked according to the appearance inspection mold. The inspection mold has inspection sections set at intervals of no more than 300mm along the span, and the mold gap does not exceed 0.2mm. When inspecting, it is allowed to apply a local pressure of up to 45N within a minimum interval of 300mm (or an equivalent smaller interval) in the assembly connection area.

[0003] The existing wall panel loading test is carried out by installing a pressure plate from the inside of the wall panel and using the pressure plate to apply local pressure to the wall panel. This method requires building a frame for installing the pressure plate on the inside of the wall panel. Before inspecting the wall panel, the pressure plate in the frame structure must be removed before the wall panel can be installed. After the wall panel is installed, the frame structure is adjusted to a position where the wall panel can be pressed. According to this loading test method, the distance between the pressure plate and the wall panel must be controlled to ensure that there is enough space to apply pressure. In addition, there are as many as a dozen pressure plates in the frame structure, and the opening and closing operations of the pressure plates for each wall panel inspection are complicated. In addition, there are long beams and other components on the inside of the wall panel. When using the pressure plate, the long beams may be pressed, thereby damaging the wall panel structure.

[0004] In addition, the force-fixing device used in the existing wall panel loading test device is a force gauge composed of a spring and a pressure bar. When the force gauge pressure bar acts on the wall panel, the applied force of the pressure bar is controlled to be no more than 45N according to the scale value on the force gauge. The loading test device needs to build a frame for installing the force gauge on the inner side of the wall panel to ensure that the force gauge pressure bar applies force to the wall panel. This form of loading method causes the force gauge to only apply thrust to the wall panel, but not tension.

[0005] Therefore, it is necessary to design a new type of wall panel loading test to overcome the above difficulties. Summary of the invention

[0006] One of the purposes of the present invention is to provide a vacuum suction device which can apply a tensile force to a part to be inspected on its outside, so that a complicated frame does not need to be set up on the inside of the wall panel during the loading process.

[0007] The objective of the present invention is achieved through the following technical solution: A vacuum suction device, comprising a vacuum adsorption mechanism, a fixing mechanism and a tension applying mechanism. The vacuum adsorption mechanism is arranged at one end of the vacuum suction device along the axial direction of the vacuum suction device, and is configured to be able to suck the part to be detected through the suction port. The fixing mechanism is configured to be able to fix the vacuum suction device on a supporting mechanism, wherein the supporting mechanism is used to support the vacuum suction device and is located outside the part to be detected. The tension applying mechanism is arranged at the other end of the vacuum suction device along the axial direction of the vacuum suction device, is connected to the vacuum adsorption mechanism, and is configured to be able to adjust the tension applied to the part to be detected through the vacuum adsorption mechanism on the outside of the part to be detected.

[0008] The vacuum suction device disclosed in the present invention changes the previous mode of loading test by applying pressure, and performs loading test by applying tension to the wall panel. The vacuum suction device is placed on the outside of the wall panel, so the tester does not need to install a frame on the inside of the wall panel that needs to avoid various interference structures and is convenient for the tensile machine to apply pressure load. After the vacuum suction device is sucked on the part to be tested (wall panel) through the vacuum adsorption mechanism and fixed to the support mechanism through the fixing mechanism, the tester can adjust the tension applied to the part to be tested by pulling the tension applying mechanism.

[0009] Preferably, the tension applying mechanism comprises:

[0010] A movable shaft, the movable shaft being connected to the vacuum adsorption mechanism, and when the movable shaft moves along a side away from the vacuum adsorption mechanism, the pulling force applied to the part to be inspected can be adjusted;

[0011] A guide cylinder, which can be fixed on the support mechanism and has a guide channel formed inside for guiding the movable shaft, and a wall surface of the guide channel is provided with a positioning hole along the extension direction of the guide channel;

[0012] A positioning pin, the positioning pin being configured to be movable in the positioning hole along the extending direction and capable of passing through the positioning hole to be connected to the movable shaft;

[0013] A locking piece is configured to maintain the position of the positioning pin in the extending direction.

[0014] The locking member may be a locking nut having an internal threaded portion. At this time, the outer wall surface of the guide tube is formed with an external threaded portion that matches the internal threaded portion of the locking nut.

[0015] Preferably, the positioning holes are arranged in pairs at radially opposite ends of the guide cylinder, and the positioning pin can pass through the two positioning holes located at the radially opposite ends.

[0016] The movable shaft is provided with a convex shoulder at one end adjacent to the vacuum adsorption mechanism, and the convex shoulder is formed as a single plate-like member extending circumferentially around the movable shaft, or a plurality of plate-like members arranged at different circumferential positions of the movable shaft.

[0017] Preferably, the vacuum suction device further comprises a second return spring, two ends of which abut against the boss portion and the guide tube respectively.

[0018] Preferably, the vacuum suction device also includes a sleeve for guiding the boss portion, the sleeve having a first end wall and a second end wall located at its axial ends, wherein the first end wall is sleeved on the vacuum adsorption mechanism, and the second end wall is slidably sleeved on the guide tube.

[0019] Preferably, two ends of the second return spring abut against the boss portion and the second end wall respectively.

[0020] Preferably, the second return spring is sleeved on the moving shaft.

[0021] Preferably, the outer wall of the guide tube protrudes outward to form a flange portion, wherein the flange portion and the second end wall are axially opposite to each other and are provided with corresponding through holes, and fasteners can pass through the through holes of the flange portion and the second end wall to fix the vacuum suction device on the support mechanism.

[0022] Preferably, the vacuum suction device further comprises a flat plate member capable of being clamped between the second end wall and the flange portion.

[0023] Preferably, the wall surface of the sleeve is provided with a guide hole extending along the extension direction of the sleeve, and the boss portion is provided with a guide rod protruding radially outward along the movable axis, and the guide rod is configured to be slidably fixed in the guide hole.

[0024] Preferably, the vacuum suction device further comprises a scale extending longitudinally along the vacuum suction device and used to indicate the pulling force, wherein the scale is arranged at an end of the movable axis away from the vacuum adsorption mechanism, or at an end of the positioning pin away from the vacuum adsorption mechanism.

[0025] Preferably, the support mechanism comprises a support plate and a support frame, wherein a hinge shaft is provided on opposite sides of the support plate, a hinge hole for accommodating the hinge shaft is provided on the support frame, and the hinge hole extends along the axial direction of the tension applying mechanism.

[0026] Preferably, the vacuum adsorption mechanism includes a suction cup for adsorbing on the surface of the part, and a hollow shaft for supporting the suction cup and connected to the suction port fluid of the suction cup, wherein the hollow shaft includes an exhaust port connected to the internal channel fluid thereof.

[0027] Preferably, the positioning pin is connected to the movable shaft via a first return spring.

[0028] Preferably, the vacuum suction device further comprises a sensor for detecting the distance between the moving shaft and the positioning pin, and a display mechanism communicatively connected to the sensor, wherein the sensor is mounted on the moving shaft or the positioning pin, and the display mechanism is configured to generate and display the tension value of the tension based on the distance.

[0029] The beneficial effects of the present invention are:

[0030] 1. The test personnel can apply tensile force from the outer surface of the part to be tested to perform a loading test. Compared with the method of applying pressure from the inside, the vacuum suction device disclosed in the present invention allows the test personnel to avoid being affected by complex structures such as long beams on the inner side of the wall panel during the force application process, thereby protecting the overall appearance of the wall panel. In addition, the vacuum suction device does not need to arrange a frame structure for installing a force gauge on the inner side of the wall panel of the inspection tool, which makes the entire inspection tool simpler. Moreover, before inspecting the wall panel, the test personnel do not need to adjust the force application device, thereby improving the measurement efficiency of the wall panel.

[0031] 2. Using the spring Hooke's law, the movement of the locking nut is converted into the movement of the positioning pin, so that the first return spring is used, and the combined force of the elastic force of the first return spring and other forces is engraved on the visible part of the device to visualize the pulling force acting on the suction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0033] Figure 1 It is a schematic structural diagram of the vacuum suction device of the present invention.

[0034] Figure 2 for Figure 1 An enlarged view of a part A of the vacuum suction device.

[0035] Figure 3 for Figure 1 Exploded view of the vacuum extraction device.

[0036] Figure 4 Shows Figure 1 A cross-sectional view of the vacuum suction device from the front view direction.

[0037] Figure 5 Shows Figure 1 A perspective view of the vacuum suction device from above.

[0038] Figure 6 A schematic diagram showing a vacuum suction device in use.

[0039] Description of reference numerals:

[0040] Vacuum suction device: 100

[0041] Siding: 200

[0042] Vacuum adsorption mechanism: 10

[0043] Fixed mechanism: 20

[0044] Tension applying mechanism: 30

[0045] Support mechanism: 40

[0046] Sleeve: 50

[0047] Second return spring: 60

[0048] Flat pieces: 70

[0049] Suction cups: 11

[0050] Hollow shaft: 12

[0051] Internal channels: 13

[0052] Air extraction port: 14

[0053] Moving axis: 21

[0054] Shoulder: 21A

[0055] Guide rod: 21B

[0056] Guide tube: 22

[0057] Guide channel: 22A

[0058] Positioning pins: 23

[0059] Lock nut: 24

[0060] Positioning holes: 25

[0061] Flange: 26

[0062] Fasteners: 27

[0063] Scale: 28

[0064] First return spring: 29

[0065] Support plate: 41

[0066] Support frame: 42

[0067] Hinge holes: 43

[0068] Articulation axis: 44

[0069] Guide holes: 52

[0070] First end wall: 54

[0071] Second end wall: 56 DETAILED DESCRIPTION

[0072] Next, the inventive concept of the present invention will be described in detail with reference to the accompanying drawings. What is described here is only the preferred embodiment of the present invention, and those skilled in the art can think of other ways to implement the present invention on the basis of the preferred embodiment, and the other ways also fall into the scope of the present invention. In the following specific description, directional terms such as "upper", "lower", "inner", "outer", "longitudinal", "horizontal", etc. are used with reference to the directions described in the accompanying drawings. The components of the embodiments of the present invention can be placed in a variety of different directions, and the directional terms are for illustrative purposes and are not restrictive.

[0073] Figure 1 FIG. 1 shows a three-dimensional view of a vacuum suction device 100 according to the present invention. Figure 1 As shown, the vacuum suction device 100 is composed of a vacuum suction mechanism 10, a fixing mechanism 20, and a tension applying mechanism 30. The vacuum suction mechanism 10 is arranged at one end of the vacuum suction device 100 along the axial direction X of the vacuum suction device 100 (i.e., the longitudinal direction of the vacuum suction device 100), and is configured to suck the part to be inspected through the suction port. In the following, for the sake of convenience, the part to be inspected will be schematically described by taking the "wallboard" as an example.

[0074] Combination Figure 3-5 As shown, Figure 3 shows an exploded view of the vacuum suction device 100, Figure 4 Shows Figure 1 A cross-sectional view of the vacuum suction device 100 in the front view direction, Figure 5 Shows Figure 1 A perspective view of the vacuum suction device 100 from a top view. Figure 3-5The vacuum adsorption mechanism 10 has a suction cup 11 for adsorbing on the surface of the wall panel 200, and a hollow shaft 12 for supporting the suction cup 11 and being fluidly connected to the suction port of the suction cup 11, wherein the hollow shaft 12 includes an air suction port 14 fluidly connected to its internal channel 13. The suction cup 11 is a conventional component made of a flexible material, and the small diameter end on one side is sealedly fixed on the hollow shaft 12, and the large diameter section (air suction port) on the other side is used to engage the part to be tested (i.e., the wall panel 200). Referring to FIG. 4, the internal channel 13 of the hollow shaft 12 made of a rigid material is provided with the above-mentioned air suction port 14 at the end of its extension direction. The air suction port 14 can be provided with a conventional interface for connecting an air pump. When in use, the tester places the air suction port of the suction cup 11 against the wall panel 200 and then turns on the air suction pump. The air suction pump sucks away the air in the space formed by the suction cup 11 and the wall panel 200 to form a vacuum environment. Under the effect of external air pressure, the vacuum adsorption mechanism 10 (vacuum suction device 100 ) can firmly attract the wall panel 200 .

[0075] According to the present disclosure, the suction cup 11 of the vacuum suction device 100 is set to maintain a minimum vacuum pressure within the range of 30-80 kPa, thereby ensuring that a pulling force of not less than 45 N can be applied to the wall panel 200 .

[0076] The fixing mechanism 20 of the vacuum suction device 100 is used to fix the vacuum suction device 100 on the supporting mechanism 40, wherein the supporting mechanism 40 is used to support the vacuum suction device 100 and is located outside the part to be inspected. The fixing mechanism 20 can be any mechanism and device suitable for fixing the vacuum suction device 100, for example, it can be a clamping mechanism, a threaded fastening mechanism, a clamping mechanism, etc. The supporting mechanism 40 in the present disclosure can optionally be a Figure 1 , 3 -5, including a structural form of a support plate 41 and a support frame 42, wherein the support plate 41 is mounted and fixed on the support frame 42. As an optional fixing mechanism 20, the fixing mechanism 20 disclosed in the present invention is composed of a flange portion 26 of the guide cylinder 22, a second end wall 56 of the sleeve 50, and a fastening bolt 27 connecting the flange portion 26 and the second end wall 56. The flange portion 26 of the guide cylinder 22 and the second end wall 56 of the sleeve 50 will be further described below.

[0077] Continue to see Figure 1-5 The tension applying mechanism 30 is arranged at the other end of the vacuum suction device 100 along the axial direction X of the vacuum suction device 100, which is connected to the vacuum adsorption mechanism 10 and is configured to be able to adjust the tension applied to the wall panel 200 on the outside of the part to be inspected through the vacuum adsorption mechanism 10.

[0078] See also Figure 2-5The tension applying mechanism 30 is specifically composed of a moving shaft 21, a guide cylinder 22, a positioning pin 23, a sleeve 50, a second return spring 60, a first return spring 29 and a locking member. Figure 3 , 4 As shown, one end of the moving shaft 21 is fixed to the hollow shaft 12 of the vacuum adsorption mechanism 10, and the two are coaxially arranged. The other end of the moving shaft 21 is connected to the positioning pin 23. When the tester moves the positioning pin 23, the moving shaft 21 is driven to move along the side away from the vacuum adsorption mechanism 10 ( Figure 1-5 When the movable shaft 21 moves (the right side in the figure), the movable shaft 21 synchronously drives the hollow shaft 12 to move right, and the pulling force applied to the part to be inspected increases; similarly, when the movable shaft 21 moves left, the pulling force decreases.

[0079] In the embodiments 3-5, the other end of the movable shaft 21 is connected to the positioning pin 23 via the first return spring 29. Specifically, the other end of the movable shaft 21 and the positioning pin 23 are respectively provided with hanging holes, and the two ends of the first return spring 29 pass through the hanging holes to connect the movable shaft 21 and the positioning pin 23. After confirming the tensile load to be applied to the wall plate 200 and the elastic coefficient of the first return spring 29, the user can determine the moving distance of the positioning pin 23 according to Hooke's law. Through the set first return spring 29, the tester can accurately adjust the tensile force value applied to the wall plate 200.

[0080] In order to lock the position of the positioning pin 23 and ensure accurate adjustment of the tension value, the tension applying mechanism 30 is also provided with a guide cylinder 22 and a corresponding locking member. The guide cylinder 22 can be fixed on the support mechanism 40. Specifically, the outer wall surface of the guide cylinder 22 is provided with a flange portion 26 protruding outward, wherein the flange portion 26 is provided with a through hole, and a fastener such as a fastening bolt 27 or a fastening screw can pass through the through hole to fix the guide cylinder 22 (vacuum suction device 100) on the support plate 41 of the support mechanism 40. A guide channel 22A for guiding the movable shaft 21 is formed inside the guide cylinder 22. The wall surface of the guide channel 22A is provided with a positioning hole 25 along the extension direction X of the guide channel 22A as shown in 3 and 5. The positioning pin 23 can move in the extension direction X in the positioning hole 25, and can pass through the positioning hole 25 to connect with the movable shaft 21.

[0081] The positioning holes 25 are preferably arranged in pairs at radially opposite ends of the guide cylinder 22, and the positioning pin 23 can pass through the two positioning holes 25 located at the radially opposite ends to ensure that when the positioning pin 23 is moved to the desired position, it will not be pulled into the guide channel 22A of the guide cylinder 22 by the elastic action of the first return spring 29.

[0082] The locking member is configured to maintain the position of the positioning pin 23 in the extension direction. The locking member may be in the form of a locking nut 24 having an internal thread portion. At this time, the outer wall surface of the guide cylinder 22 is formed with an external thread portion that matches the internal thread portion of the locking nut 24. The tester can adjust the position of the positioning pin 23 in the extension direction X of the guide cylinder 22 by screwing the locking nut 24, thereby adjusting the tension value.

[0083] Alternatively, the locking member can also be a clamp. When the locating pin 23 moves to the desired position, it is locked on the guide tube 22 by the clamp.

[0084] The movable shaft 21 may optionally be provided with a shoulder portion 21A at one end adjacent to the vacuum adsorption mechanism 10. Figure 3-5 In the embodiment shown, the shoulder portion 21A is formed as a single plate-like member extending circumferentially around the moving shaft 21, that is, the plate-like member is perpendicular to the Figure 1 Alternatively, the shoulder portion 21A may also be formed as a plurality of plate-like members disposed at different circumferential positions of the moving shaft 21 .

[0085] After the convex shoulder 21A is provided on the movable shaft 21, the vacuum suction device 100 can be reset by the second reset spring 60 abutting against the convex shoulder 21A. The two ends of the second reset spring 60 can be optionally Figure 4 , 5 As shown, the second return spring 60 abuts against the boss portion 21A and the guide tube 22. The second return spring 60 can be sleeved on the moving shaft 21 optionally.

[0086] In addition, the vacuum suction device 100 may also be provided with a sleeve 50 for guiding the convex shoulder 21A of the movable shaft 21. In the process of the movable shaft 21 being moved by the pulling action of the positioning pin 23, the convex shoulder 21A slides along the inner wall surface of the sleeve 50. Under the guiding action of the sleeve 50, the movable shaft 21 will not deflect during the movement, causing the vacuum suction mechanism 10 to be disturbed and separated from the wall plate 200. It can be understood that in order to ensure that the movable shaft 21 will not deflect during the movement, it can also be achieved by having a longer fitting distance between the movable shaft 21 and the guide cylinder 22 in the extension direction X of the guide cylinder 22. For example, at any time between the initial moment when the vacuum suction device 100 does not apply a pulling force and the end moment when the vacuum suction device 100 applies a maximum pulling force, the length of the movable shaft 21 located in the guide channel 22A of the guide cylinder 22 is set to be not less than 50%, 60%, etc. of its total length.

[0087] The sleeve 50 has a first end wall 54 and a second end wall 56 at both ends of the sleeve 50 in the axial direction, wherein the first end wall 54 is sleeved on the vacuum suction mechanism 10, and the second end wall 56 is sleeved on the guide tube 22. A plurality of through holes may be provided on the second end wall 56, and the through holes are aligned with the through holes on the guide tube 22. The fastener (fastening bolt) 27 can pass through the through holes of the flange portion 26 and the second end wall 56 respectively to fix the vacuum suction device 100 on the support mechanism 40. It can be understood that the second end wall 56, the flange portion 26 and the fastener (fastening bolt) 27 at this time form a fixing mechanism 20 for fixing the vacuum suction device 100, and the fixing mechanism 20 is clamped on the support plate 41 of the support mechanism 40.

[0088] In the case where the sleeve 50 is provided, since the sleeve 50 is an immovable part fixed to the support mechanism 40, the two ends of the second return spring 60 can also be replaced to be respectively abutted against the convex shoulder 21A and the second end wall 56. In addition, multiple second return springs 60 can be provided. Multiple return springs can be evenly arranged in the space S defined by the convex shoulder 21A of the moving shaft 21 and the second end wall 56 of the sleeve 50. It should be understood that at this time, the second return springs 60 can also be respectively sleeved on the moving shaft 21 and set in the space S defined by the convex shoulder 21A of the moving shaft 21 and the second end wall 56 of the sleeve 50.

[0089] In the above description, the movable shaft 21 can be guided by the guide tube 22 and / or the sleeve 50 without being deflected in the longitudinal direction X of the vacuum suction device 100. As a preferred embodiment of the present disclosure, the vacuum suction device 100 is also provided with a mechanism for ensuring that the movable shaft 21 does not rotate in the transverse direction Y of the vacuum suction device 100. The mechanism includes a guide hole 52 provided in the sleeve 50 and a guide rod 21B provided on the boss portion 21A of the movable shaft 21. The guide hole 52 extends along the extension direction of the sleeve 50. The guide rod 21B protrudes outward in the radial direction of the movable shaft 21. See FIG. Figure 5 , the guide rod 21B can be a screw that can be threadedly engaged with the boss portion 21A.

[0090] Preferably, a plurality of guide holes 52 may be provided. For example, in an embodiment in which the sleeve 50 is provided with a circular cross section, the guide holes 52 are provided at radially opposite ends of the sleeve 50. Under the premise that the movable shaft 21 does not rotate, the guide holes 52 may be provided at different circumferential positions on the wall surface of the sleeve 50. Correspondingly, a plurality of guide rods 21B may be provided accordingly.

[0091] See also Figure 3-5Optionally, the vacuum suction device 100 may be provided with a flat piece 70, which may be provided between the second end wall 56 and the flange portion 26. After the fastener 27 passes through the second end wall 56, the flat piece 70, and the flange portion 26, the clamping force applied by the fastener 27 can be dispersedly transmitted to the sleeve 50 through the flat piece 70, so that the sleeve 50 can avoid stress concentration.

[0092] See also Figure 1-2 In order to facilitate the test personnel to identify the tension value applied to the wall panel 200, according to the present disclosure, the vacuum suction device 100 is also provided with a scale 28 extending along its longitudinal direction and used to indicate the tension. The scale 28 is arranged at the end of the movable shaft 21 away from the vacuum adsorption mechanism 10, or the end of the positioning pin 23 away from the vacuum adsorption mechanism 10. Specifically, the surface of the scale 28 is provided with a scale, and extends out from the opening of the guide cylinder 22. When the test personnel turns the locking nut 24 to adjust the tension, the scale 28 will move synchronously with the movable shaft 21 or the positioning pin 23, so that different scales are aligned with the end face of the sleeve 50. By reading the scale on the scale 28, the test personnel can know the tension applied to the wall panel 200 by the vacuum suction device 100.

[0093] It can be understood that the scale set on the ruler 28 is positively correlated with the elastic coefficients of the first return spring 29 and the second return spring 60. Designers can set the scale by calculation, or set the scale by experiment. In the present disclosure, the elastic coefficient of the second return spring 60 can be set to be much smaller than the elastic coefficient of the first return spring 29. For example, the elastic coefficient of the second return spring 60 is set to 0.98N / mm, and the elastic coefficient of the first return spring 29 is set to 5.58N / mm. In this case, when the loading test is carried out, the deformation scale of the second return spring 60 is small, and correspondingly, the moving distance of the moving shaft 21 is relatively small, so the vacuum adsorption device will always be tightly attached to the wall panel 200.

[0094] See also Figure 1 , 3 In order to expand the application scope of the vacuum suction device 100 according to the present disclosure, the opposite side of the support plate 41 in the support mechanism 40 of the present disclosure is provided with a hinge shaft 44 in the form of a screw or bolt, and the support frame 42 is provided with a hinge hole 43 for accommodating the hinge shaft 44. Each hinge hole 43 extends along the axial direction of the tension applying mechanism (30). After the support frame 42 is fixed in place, the tester can rotate and translate the vacuum suction device 100 around the hinge hole 43 according to the position and shape of the wall panel 200 and then lock it. Then, the tensile load is applied to the wall panel 200 by moving the positioning pin 23.

[0095] The following is a schematic illustration of the test process by applying a tensile load of no more than 45N to the wall panel 200. First, the support frame 42 is installed on the wall panel 200. Figure 6 The vacuum suction device 100 is attached to the predetermined position of the wall panel 200 by the vacuum suction mechanism 10. Then, the locking nut 24 is rotated to move the positioning pin 23 installed on the positioning hole 25 of the guide cylinder 22 to the left. At this time, the first return spring 29 is stretched, driving the moving shaft 21 to move to the right. In the case where the moving distance of the second return spring 60 is small, the influence of the deformation of the second return spring 60 on the moving distance of the positioning pin 23 can be ignored. According to the spring Hooke's law F = ks, the initial tension of the first spring = 20N, k = 5.58N / m, and the moving distance s≈4.5mm of the positioning pin 23 is calculated. The value "45N" is engraved 4.5mm outward from the initial position of the ruler 28. Pulling the positioning pin 23 to the "45N" scale value position can apply a pulling force of 45N to the wall panel 200. Since the rigidity of the end wall panel 200 of the suction cup 11 is unknown, assuming that the suction cup 11 is stationary, the pulling force applied by the suction cup 11 on the horizontal tail wall panel 200 is 45N; assuming that the suction cup 11 moves a short distance to the right, since the k value of the compression spring is very small, the pulling force applied by the suction cup 11 on the wall panel 200 will be slightly less than 45N. Both cases meet the condition that the applied pulling force is not greater than 45N.

[0096] In addition to obtaining the applied tension by reading the above-mentioned scale 28, the tension value of the vacuum suction device 100 according to the present disclosure can also be measured by detecting the relative displacement change between the positioning pin 23 and the movable shaft 21. Specifically, the vacuum suction device 100 can be provided with a sensor for measuring the distance between the positioning pin 23 or the movable shaft 21, and the sensor is connected in communication with a display mechanism for displaying the tension value. As analyzed above, since the distance between the positioning pin 23 and the movable shaft 21 is positively correlated with the tension value, when the distance changes, the force value on the display mechanism also changes accordingly. This method can avoid the occurrence of errors in reading the tension value.

[0097] Optionally, the vacuum suction device 100 is further provided with an alarm connected to the above-mentioned sensor. When the applied pulling force reaches a predetermined value, such as 45N, the alarm sounds an alarm, which can remind the experimenter to avoid applying too much pulling force.

[0098] According to the above description, the vacuum suction device 100 disclosed in the present invention changes the previous mode of performing loading tests by applying pressure, and performs loading tests by applying tension to the wall panel 200. The vacuum suction device 100 is placed on the outside of the wall panel 200, so the tester does not need to install a frame on the inside of the wall panel 200 that needs to avoid various interference structures and is convenient for the tensile machine to apply pressure loads. After the vacuum suction device 100 is sucked on the part to be tested (wall panel 200) through the vacuum adsorption mechanism 10 and fixed to the support mechanism 40 through the fixing mechanism 20, the tester can adjust the tension applied to the part to be tested by pulling the tension applying mechanism 30.

[0099] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum suction device (100), characterized in that: The vacuum suction device (100) comprises: A vacuum adsorption mechanism (10), the vacuum adsorption mechanism (10) being arranged at one end of the vacuum adsorption device (100) along the axial direction of the vacuum adsorption device (100) and being configured to be able to adsorb the part to be inspected through the suction port; a fixing mechanism (20), the fixing mechanism (20) being configured to fix the vacuum suction device (100) on a supporting mechanism (40), wherein the supporting mechanism (40) is used to support the vacuum suction device (100) and is located outside the part to be inspected; and a tension applying mechanism (30), the tension applying mechanism (30) being arranged at the other end of the vacuum suction device (100) along the axial direction of the vacuum suction device (100), being connected to the vacuum adsorption mechanism (10), and being configured to be able to adjust the tension applied to the part to be inspected on the outside of the part to be inspected through the vacuum adsorption mechanism (10); Wherein, the tension applying mechanism (30) comprises: A movable shaft (21), the movable shaft (21) being connected to the vacuum adsorption mechanism (10), and when the movable shaft (21) moves along a side away from the vacuum adsorption mechanism (10), the pulling force applied to the part to be inspected can be adjusted; A guide tube (22), the guide tube (22) being capable of being fixed on the support mechanism (40), and having a guide channel (22A) formed therein for guiding the movable shaft (21), and a wall surface of the guide channel (22A) being provided with a positioning hole (25) along an extension direction of the guide channel (22A); a positioning pin (23), the positioning pin (23) being configured to be movable in the positioning hole (25) along the extending direction, and capable of passing through the positioning hole (25) and being connected to the movable shaft (21) via a first return spring (29); and a locking member configured to maintain the position of the positioning pin (23) in the extending direction; Furthermore, after the user confirms the tensile load to be applied to the part to be inspected and the elastic coefficient of the first return spring (29), the moving distance of the positioning pin (23) can be determined according to Hooke's law, and the tensile force value applied to the part to be inspected can be accurately adjusted by setting the first return spring (29) and the positioning pin (23).

2. The vacuum suction device (100) according to claim 1, characterized in that: An external threaded portion is formed on the outer wall surface of the guide tube (22), and the locking piece is a locking nut (24) having an internal threaded portion that cooperates with the external threaded portion.

3. The vacuum suction device (100) according to claim 2, characterized in that: The positioning holes (25) are arranged in pairs at radially opposite ends of the guide cylinder (22), and the positioning pin (23) can pass through the two positioning holes (25) located at the radially opposite ends.

4. The vacuum suction device (100) according to any one of claims 1 to 3, characterized in that: The movable shaft (21) is provided with a boss portion (21A) at one end adjacent to the vacuum adsorption mechanism (10); the boss portion (21A) is formed as a single plate-like member extending circumferentially around the movable shaft (21), or as a plurality of plate-like members arranged at different circumferential positions of the movable shaft (21).

5. The vacuum suction device (100) according to claim 4, characterized in that: The vacuum suction device (100) further comprises a second return spring (60), the two ends of the second return spring (60) respectively abutting against the boss portion (21A) and the guide tube (22).

6. The vacuum suction device (100) according to claim 4, characterized in that: The vacuum suction device (100) further comprises a sleeve (50) for guiding the boss portion (21A), wherein the sleeve (50) has a first end wall (54) and a second end wall (56) located at two axial ends thereof, wherein the first end wall (54) is sleeved on the vacuum suction mechanism (10), and the second end wall (56) is slidably sleeved on the guide tube (22).

7. The vacuum suction device (100) according to claim 6, characterized in that: The vacuum suction device (100) further comprises a second return spring (60), and two ends of the second return spring (60) respectively abut against the boss portion (21A) and the second end wall (56).

8. The vacuum suction device (100) according to claim 7, characterized in that: The second return spring (60) is sleeved on the movable shaft (21).

9. The vacuum suction device (100) according to any one of claims 6 to 8, characterized in that: The outer wall of the guide tube (22) protrudes outward to form a flange portion (26), wherein the flange portion (26) and the second end wall (56) are axially opposed and are provided with corresponding through holes, and fasteners can pass through the through holes of the flange portion (26) and the second end wall (56) to fix the vacuum suction device (100) on the support mechanism (40).

10. The vacuum suction device (100) according to claim 9, characterized in that: The vacuum suction device (100) further comprises a flat plate member (70) capable of being clamped between the second end wall (56) and the flange portion (26).

11. The vacuum suction device (100) according to claim 6, characterized in that: The wall surface of the sleeve (50) is provided with a guide hole (52) extending along the extension direction of the sleeve (50), and the boss portion (21A) is provided with a guide rod (21B) protruding radially outward along the movable shaft (21), and the guide rod (21B) is configured to be slidably fixed in the guide hole (52).

12. The vacuum suction device (100) according to claim 2 or 3, characterized in that: The vacuum suction device (100) further comprises a scale (28) extending in the longitudinal direction of the vacuum suction device (100) and used to indicate the pulling force, wherein the scale (28) is arranged at an end of the movable shaft (21) facing away from the vacuum adsorption mechanism (10), or at an end of the positioning pin (23) facing away from the vacuum adsorption mechanism (10).

13. The vacuum suction device (100) according to claim 1, characterized in that: The support mechanism (40) comprises a support plate (41) and a support frame (42), wherein a hinge shaft (44) is provided on the opposite side of the support plate (41), and a hinge hole (43) for accommodating the hinge shaft (44) is provided on the support frame (42), and the hinge hole (43) extends along the axial direction of the tension applying mechanism (30).

14. The vacuum suction device (100) according to claim 1, characterized in that: The vacuum adsorption mechanism (10) comprises a suction cup for adsorbing on the surface of the part, and a hollow shaft (12) for supporting the suction cup and connected to the suction port fluid of the suction cup, wherein the hollow shaft (12) comprises an air extraction port (14) connected to the fluid of its internal channel (13).

15. The vacuum suction device (100) according to claim 1, characterized in that: The vacuum suction device (100) further comprises a sensor for detecting the distance between the movable shaft (21) and the positioning pin (23), and a display mechanism communicatively connected to the sensor, wherein the sensor is mounted on the movable shaft (21) or the positioning pin (23), and the display mechanism is configured to generate and display a tension value of the tension based on the distance.

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