Flat plate sample fixing device and flat plate sample mounting structure for determining rain erosion experiment

Abstract

The utility model relates to a flat sample fixing device and a flat sample mounting structure for a rain erosion test. Comprising a fixing plate, one side of the fixing plate is provided with a slot, the top and the bottom of the slot are respectively communicated with the top and the bottom of the fixing plate, the inner wall of the slot is circumferentially provided with a bulge, the bulge and the inner wall of the slot are enclosed by a mounting gap, an adjusting plate is inserted in the slot, the adjusting plate is circumferentially provided with a chute matched with the bulge, and the adjusting plate and the fixing plate are enclosed by a test port. First countersunk holes are formed in the fixed plate, first countersunk bolts are in threaded connection with the interiors of the first countersunk holes, second countersunk screw holes are formed in the adjusting plate, and second countersunk bolts are in threaded connection with the interiors of the second countersunk screw holes; through the structural design of the flat plate sample fixing device, the technical problems that an existing testing machine is only provided with a tool with one flat plate sample size, and an existing flat plate sample fixing tool cannot conveniently meet the requirement for replacing flat plate samples with different sizes are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a flat sample fixing device for measuring rain erosion, in particular to a flat sample fixing device and a flat sample installation structure for measuring rain erosion experiments. Background Art

[0002] Wind turbine blades are the key components of wind turbines. The leading edge of the blades is the main wind-cutting part of the blades. The blades need to work in different environments. Their performance is directly related to the power generation efficiency of the entire system, so a test machine is needed to simulate the rain erosion environment.

[0003] However, the biggest challenge for the test machine is to simulate the actual blade environment. Not only does it need to accurately simulate the environment of the blade being hit by rain under high-speed rotation, but it also needs to properly adjust the sample size and firmly fix the sample on the high-speed rotating disk to simulate the erosion of the blade in the real rain erosion environment. The existing test machine only has a tooling for the size of a flat sample, but the blade will shake at a certain angle in the wind, and the sample needs to be fixed in real time. The current test machine cannot fully meet this requirement, and the existing test machine cannot easily meet the needs of replacing flat samples of different sizes.

[0004] Therefore, in view of the above problems, the utility model urgently needs to provide a flat sample fixing device and a flat sample installation structure for measuring rain erosion experiments. Utility Model Content

[0005] The utility model aims to provide a flat sample fixing device and a flat sample installation structure for measuring rain erosion experiments. The structural design of the flat sample fixing device solves the technical problem that the existing testing machine has only one flat sample size tooling and cannot conveniently meet the technical problem of replacing flat samples of different sizes.

[0006] The utility model provides a flat sample fixing device, comprising a fixing plate, a slot is provided on one side of the fixing plate, the top and bottom of the slot are respectively connected with the top and bottom of the fixing plate, a protrusion is provided circumferentially on the inner wall of the slot, an installation gap is provided around the protrusion and the inner wall of the slot, an adjustment plate is inserted in the slot, a sliding groove matching the protrusion is provided circumferentially on the adjustment plate, a test port is provided around the adjustment plate and the fixing plate, a first countersunk hole is provided on the fixing plate, a first countersunk bolt is screwed in each of the first countersunk holes, a second countersunk screw hole is provided on the adjustment plate, a second countersunk bolt is screwed in each of the second countersunk screw holes.

[0007] Furthermore, it also includes a pad located below the test port, which is inserted into the installation gap and has a thickness less than the thickness of the installation gap; a pressure plate extending outward is provided on the front side of the adjustment plate, and a groove is provided around the pressure plate and the front side wall of the adjustment plate, and the height of the groove is equal to the height of the installation gap.

[0008] Furthermore, the pad is a polyurethane pad.

[0009] Furthermore, the fixing plate is made of aluminum.

[0010] Furthermore, the material of the adjustment plate is aluminum.

[0011] Furthermore, the fixing plate is provided with four rows of first countersunk holes at intervals along the length; the first countersunk bolt comprises a first countersunk screw and a first nut, and a first flat washer is sleeved on the first countersunk screw.

[0012] Furthermore, the adjustment plate is provided with three rows of second countersunk screw holes at intervals along the length; the second countersunk bolt comprises a second countersunk screw and a second nut, and a second flat washer is sleeved on the second countersunk screw.

[0013] Furthermore, a first slope is provided on one side of the fixing plate.

[0014] Furthermore, the upper end surface of the protrusion is provided with a second slope surface.

[0015] The utility model also provides a flat sample installation structure for measuring rain erosion experiments, including the flat sample fixing device and a rotating disk as described above, wherein the rotating disk is provided with first installation holes and second installation holes corresponding to each first countersunk hole and each second countersunk screw hole respectively.

[0016] Compared with the prior art, the flat sample fixing device provided by the utility model has the following improvements:

[0017] 1. The utility model provides a flat sample fixing device, a slot is provided on one side of the fixing plate, the top and bottom of the slot are respectively connected with the top and bottom of the fixing plate, a protrusion is provided on the inner wall of the slot, and an installation gap is provided around the protrusion and the inner wall of the slot, the flat sample is inserted from one end of the slot, and the outer edge of the flat sample is inserted into the installation gap, and at the same time, an adjustment plate is inserted into the slot, and a sliding groove matching the protrusion is provided on the adjustment plate in the circumference, and the adjustment plate can move laterally in the slot, and a test port is provided around the adjustment plate and the fixing plate, and the size of the test port can be adjusted by the lateral movement of the adjustment plate, a first countersunk hole is provided on the fixing plate, and a first countersunk bolt is screwed in each first countersunk hole, a second countersunk screw hole is provided on the adjustment plate, and a second countersunk bolt is screwed in each second countersunk screw hole, and the positioning of the fixing plate and the adjustment plate is realized by the first countersunk bolt and the second countersunk bolt respectively. Due to the pull-out design of the adjustment plate, the plate sample fixing device can test flat samples of different sizes, and the first countersunk bolt and the second countersunk bolt can firmly fix the fixing plate and the adjustment plate on the rotating disk to ensure the accuracy of the test results.

[0018] 2. The utility model prepares a pad with the same size as the flat sample through the design of the pad. The thickness can be adjusted according to the size, so that the flat sample is firmly fixed in the installation gap. At the same time, the pressure plate on the adjustment plate 4 is pressed to ensure the circumferential pressure connection of the flat sample to avoid displacement during rotation. At the same time, the polyurethane pad is light in weight and has good shockproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram (stereoscopic diagram) of the flat sample fixing device described in the utility model;

[0021] Figure 2 It is a structural schematic diagram of the fixing plate described in the utility model (three-dimensional top view);

[0022] Figure 3 It is a structural schematic diagram of the fixing plate described in the utility model (bottom-view stereogram);

[0023] Figure 4 It is an assembly diagram (stereoscopic diagram) of the adjustment plate and the second countersunk bolt described in the utility model;

[0024] Figure 5 It is an assembly diagram (stereoscopic diagram) of the fixing plate, the first countersunk bolt and the backing plate described in the utility model;

[0025] Figure 6 It is a structural schematic diagram (stereoscopic diagram) of a flat plate sample installation structure for measuring rain erosion experiment described in the utility model.

[0026] Description of reference numerals:

[0027] 1. Fixing plate; 101. First countersunk hole; 102. First slope; 2. Slot; 3. Protrusion; 301. Second slope; 4. Adjusting plate; 401. Slide groove; 402. Second countersunk screw hole; 403. Groove; 5. Test port; 6. First countersunk bolt; 61. First countersunk screw; 62. First nut; 7. Second countersunk bolt; 71. Second countersunk screw; 72. Second nut; 8. Pad; 9. First flat washer; 10. Second flat washer; 11. Rotating disk. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a flat specimen fixing device, including a fixing plate 1, a slot 2 is provided on one side of the fixing plate 1, the top and bottom of the slot 2 are respectively connected with the top and bottom of the fixing plate 1, a protrusion 3 is circumferentially provided on the inner wall of the slot 2, and an installation gap is arranged around the protrusion 3 and the inner wall of the slot 2, an adjustment plate 4 is inserted in the slot 2, a slide groove 401 matching the protrusion 3 is circumferentially provided on the adjustment plate 4, a test port 5 is arranged around the adjustment plate 4 and the fixing plate 1, a first countersunk hole 101 is provided on the fixing plate 1, and a first countersunk bolt 6 is screwed into each of the first countersunk holes 101, a second countersunk screw hole 402 is provided on the adjustment plate 4, and a second countersunk bolt 7 is screwed into each of the second countersunk screw holes 402.

[0032] The utility model provides a flat sample fixing device, a slot 2 is provided on one side of a fixing plate 1, the top and bottom of the slot 2 are respectively connected with the top and bottom of the fixing plate 1, a protrusion 3 is circumferentially provided on the inner wall of the slot 2, and an installation gap is arranged around the protrusion 3 and the inner wall of the slot 2, the flat sample is inserted from one end of the slot 2, and the outer edge of the flat sample is inserted into the installation gap. At the same time, an adjustment plate 4 is inserted in the slot 2, and a slide groove 401 matching the protrusion 3 is circumferentially provided on the adjustment plate 4, and the adjustment plate 4 can move laterally in the slot 2, and a test port 5 is arranged around the adjustment plate 4 and the fixing plate 1, and the size of the test port 5 can be adjusted by lateral movement of the adjustment plate 4, a first countersunk hole 101 is provided on the fixing plate 1, and a first countersunk bolt 6 is screwed in each of the first countersunk holes 101, a second countersunk screw hole 402 is provided on the adjustment plate 4, and a second countersunk bolt 7 is screwed in each of the second countersunk screw holes 402, and the positioning of the fixing plate 1 and the adjusting plate 4 is respectively realized by the first countersunk bolt 6 and the second countersunk bolt 7. Due to the pull-out design of the adjustment plate 4, the flat specimen fixing device can fix flat specimens of different sizes, and the first countersunk bolt 6 and the second countersunk bolt 7 can firmly fix the fixing plate 1 and the adjustment plate 4 on the rotating disk to ensure the accuracy of the test results.

[0033] like Figure 4 As shown, the utility model also includes a pad 8 located below the test port 5, the pad 8 is inserted into the installation gap, and the thickness of the pad 8 is less than the thickness of the installation gap; a pressure plate extending outward is provided on the front side of the adjustment plate 4, and a groove 403 is provided around the pressure plate and the front side wall of the adjustment plate 4, and the height of the groove 403 is equal to the height of the installation gap.

[0034] The utility model prepares a pad with the same size as the flat sample through the design of the pad 8, and the thickness can be adjusted according to the size, so that the flat sample is firmly fixed in the installation gap. At the same time, the pressure plate on the adjustment plate 4 is crimped to ensure the circumferential crimping of the flat sample to avoid displacement during rotation, and the shockproof effect is good. At the same time, the polyurethane pad is light in weight and does not increase the overall weight.

[0035] The fixing plate 1 of the utility model is made of aluminum, and adopts high-strength hard aluminum, which is light in weight, high in strength, good in corrosion resistance, and prolongs the service life.

[0036] The material of the regulating plate 4 of the utility model is aluminum, and high-strength hard aluminum is adopted, which has light weight, high strength, good corrosion resistance and prolonged service life.

[0037] like Figure 1 , Figure 5As shown, the fixing plate 1 of this embodiment is provided with four rows of first countersunk holes 101 at intervals along the length; the first countersunk bolt 6 includes a first countersunk screw 61 and a first nut 62, and the first countersunk screw 61 is also sleeved with a first flat washer 9; the four rows of first countersunk holes 101 and the corresponding first countersunk bolts 6 cooperate to ensure the installation strength, so that the fixing plate 1 is firmly fixed on the rotating disk. In addition, the design of the first flat washer 9 can increase the contact area of ​​the first nut 62 to avoid loosening during vibration.

[0038] like Figure 1 As shown, the adjustment plate 4 of this embodiment is provided with three rows of second countersunk screw holes 402 at intervals along the length; the second countersunk bolt 7 includes a second countersunk screw 71 and a second nut 72, and the second countersunk screw 71 is sleeved with a second flat washer 10; the design of the three rows of second countersunk screw holes 402 facilitates the adjustment of the position while ensuring the installation strength, so that the adjustment plate 4 is firmly connected to the rotating disk, and the design of the second flat washer 10 can increase the contact area of ​​the second nut 72 to avoid loosening during vibration.

[0039] like Figure 2 As shown, a first slope 102 is provided on one side of the fixing plate 1 of this embodiment.

[0040] like Figure 2 As shown, the upper end surface of the protrusion 3 of this embodiment is provided with a second slope 301 to facilitate the assembly of the adjustment plate 4 and the protrusion 3.

[0041] like Figure 6 As shown, the utility model also provides a flat sample installation structure for measuring rain erosion experiments, including a flat sample fixing device and a rotating disk 11 as described in any one of the above, and the rotating disk 11 is provided with a first installation hole and a second installation hole corresponding to each first countersunk hole 101 and each second countersunk screw hole 402 respectively.

[0042] Flat specimen installation process:

[0043] The fixing plate 1 is fixed to the rotating disk 11 by the first countersunk bolt, the flat sample and the pad 8 are stacked, the pad 8 is inserted from one end of the notch of the slot 2, and slides into the inner end of the slot 2 along the installation gap, and is located below the test port 5. The adjustment plate 4 is slidably inserted into the slot 2, and the pressure plate of the adjustment plate 4 is pressed onto the top of the flat sample. The position of the adjustment plate 1 is adjusted, and it is fixed to the rotating disk 11 by the second countersunk bolt.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A flat sample fixing device, characterized in that: The invention comprises a fixing plate (1), a slot (2) is provided on one side of the fixing plate (1), the top and bottom of the slot (2) are respectively connected with the top and bottom of the fixing plate (1), a protrusion (3) is provided on the inner wall of the slot (2) in the circumferential direction, an installation gap is provided between the protrusion (3) and the inner wall of the slot (2), an adjustment plate (4) is inserted into the slot (2), a sliding groove (401) matching the protrusion (3) is provided on the circumferential direction of the adjustment plate (4), a test port (5) is provided between the adjustment plate (4) and the fixing plate (1), a first countersunk hole (101) is provided on the fixing plate (1), a first countersunk bolt (6) is screwed into each of the first countersunk holes (101), a second countersunk screw hole (402) is provided on the adjustment plate (4), a second countersunk bolt (7) is screwed into each of the second countersunk screw holes (402).

2. The flat sample fixing device according to claim 1, characterized in that: It also includes a pad (8) located below the test port (5), the pad (8) being inserted into the installation gap, the thickness of the pad (8) being less than the thickness of the installation gap; a pressure plate extending outward is provided on the front side of the adjustment plate (4), the pressure plate and the front side wall of the adjustment plate (4) are surrounded by a groove (403), the height of the groove (403) being equal to the height of the installation gap.

3. The flat sample fixing device according to claim 2, characterized in that: The backing plate (8) is a polyurethane backing plate.

4. The flat sample fixing device according to claim 1, characterized in that: The fixing plate (1) is made of aluminum.

5. The flat sample fixing device according to claim 1, characterized in that: The material of the adjustment plate (4) is aluminum.

6. The flat sample fixing device according to claim 1, characterized in that: The fixing plate (1) is provided with four rows of first countersunk holes (101) at intervals along the length; the first countersunk bolt (6) comprises a first countersunk screw (61) and a first nut (62); and a first flat washer (9) is sleeved on the first countersunk screw (61).

7. The flat sample fixing device according to claim 1, characterized in that: The adjustment plate (4) is provided with three rows of second countersunk screw holes (402) at intervals along the length; the second countersunk bolt (7) comprises a second countersunk screw (71) and a second nut (72); and a second flat washer (10) is sleeved on the second countersunk screw (71).

8. The flat sample fixing device according to claim 1, characterized in that: A first slope surface (102) is provided on one side of the fixing plate (1).

9. The flat sample fixing device according to claim 1, characterized in that: The upper end surface of the protrusion (3) is provided with a second slope surface (301).

10. A flat plate sample installation structure for measuring rain erosion test, characterized in that: The device comprises a flat sample fixing device and a rotating disk (11) as claimed in any one of claims 1 to 9, wherein the rotating disk (11) is provided with a first mounting hole and a second mounting hole respectively corresponding to each first countersunk hole (101) and each second countersunk screw hole (402).

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