A worm self-locking locking mechanism for traceless rain erosion specimens

Abstract

The present invention discloses a worm self-locking, traceless rain erosion specimen locking mechanism, comprising a loading platform, a test specimen, a support block, a locking member, a driving member, and a transmission member. The loading platform has a mounting notch on the portion to be tested, the test specimen is mounted on the surface of the support block, the locking member and the transmission member are disposed within the mounting notch, the driving member is mounted within the loading platform and is connected to the locking member via a transmission member. When locking, the support block is inserted into the mounting notch, and the rotating driving member drives the transmission member to rotate, thereby driving the locking member to move and lock the support block. The test specimen on the surface of the support block is flush with all surfaces of the loading platform, forming a surface traceless structure. When unlocking, the rotating driving member drives the transmission member to rotate, thereby driving the locking member to reset and release the locking force on the support block. The mechanism has the advantages of simple and convenient installation and disassembly, and stable and accurate testing.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed rotary table equipment simulated rain erosion experimental testing, in particular to a worm self-locking type traceless rain erosion specimen locking mechanism. Background Art

[0002] Rain erosion is the process by which repeated raindrops impact a material's surface, gradually destroying it. This phenomenon is common in large, high-speed equipment operating in rainy conditions, such as the leading edges of wind turbine blades, tunnel ventilation fan blades, aircraft engine fan blades, aircraft skins, and radomes. The damage caused by rain erosion often destroys materials, degrading component performance and structural strength, and impacting equipment efficiency and safety.

[0003] Materials need to undergo rain erosion testing to evaluate their rain erosion resistance and assess damage during operation. Currently, high-speed rotating tables are often used to simulate rain erosion tests. During these tests, protective material test specimens need to be locked and fixed to the rotating table test blades. However, current locking devices all use bolts for fastening, which is cumbersome, time-consuming, and labor-intensive to install and disassemble. The huge centrifugal force of the rotating structure can easily induce failure risks. Furthermore, gaps or defects may exist on the blade surface after installation, affecting the aerodynamic performance of the blades during high-speed rotation, affecting the blade's rotational stability and the test results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a worm self-locking traceless rain erosion specimen locking mechanism which is simple and convenient to install and disassemble and has a firm and reliable installation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] Compared with the prior art, the advantages of the present invention are:

[0007] A worm self-locking markless rain erosion specimen locking mechanism comprises a loading platform, a test specimen, a support block, a locking member, a driving member and a transmission member. The loading platform is provided with a mounting notch on the part to be tested, the test specimen is mounted on the surface of the support block, the locking member and the transmission member are arranged in the mounting notch, the driving member is mounted in the loading platform and is connected to the locking member through the transmission member. When locking, the support block is inserted into the mounting notch, and the transmission member is driven to rotate by the rotating driving member to drive the locking member to move and lock the support block to form a fixed position. The test specimen on the surface of the support block is flush with the surfaces of the loading platform to form a surface markless structure; when unlocking, the transmission member is driven to rotate by the rotating driving member to drive the locking member to reset to release the locking force on the support block.

[0008] As a further improvement of the above technical solution:

[0009] A mounting groove communicating with the mounting notch is provided in the loading platform, and the locking member and the transmission member are installed together in the mounting groove. Locking grooves are provided on the front and rear end walls of the support block. When locking, the driving member drives the transmission member to rotate to drive the locking member to move into the locking groove to lock and fix the support block; when unlocking, the driving member drives the transmission member to rotate to drive the locking member to return to the mounting groove to release the locking force on the support block.

[0010] The locking member includes a front locking block and a rear locking block, the front locking block and the rear locking block are slidably mounted in the mounting groove, and the front locking block and the rear locking block are provided with a rack connected to the transmission member. When locking, the front locking block is driven by the driving member to slide into the locking groove on the front end wall of the supporting block, and the rear locking block is driven by the driving member to slide into the locking groove on the rear end wall of the supporting block to form a locking fixation on the supporting block; when unlocking, the driving member drives the transmission member to rotate to simultaneously drive the front locking block and the rear locking block to slide into the mounting groove to release the locking fixing force on the supporting block.

[0011] The driving member includes a worm and a crank. The worm is movably installed in the loading platform through a bearing. One end of the worm is located in the installation groove and is provided with helical teeth connected to the transmission member. The other end extends to the end surface of the loading platform and is provided with a slot for connecting with the crank.

[0012] A torsion spring is arranged in the installation groove and is connected to the end of the worm.

[0013] The transmission member includes a worm shaft and a gear mounted on the worm shaft. The worm shaft is movably mounted in the mounting groove through a bearing. The worm wheel on the worm shaft is meshed with the helical teeth. The gear is also meshed with the racks on the front locking block and the rear locking block.

[0014] The support block includes a support platform and an insertion platform arranged at the bottom of the support platform. The test specimen is covered and fixed on the surface of the support platform. The locking groove is opened on the end wall of the insertion platform.

[0015] Positioning notches are provided at both ends of the insertion platform, and positioning steps that cooperate with the positioning notches for positioning are also provided in the installation notch.

[0016] The bottom of the test specimen is bent to form an edge, and the edge is fastened to the bottom of the support platform by bolts.

[0017] The bottom of the test specimen is bent to form a rim, a slot is provided between the bottom of the support platform and the insertion platform, and the rim is inserted into the slot.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The worm self-locking traceless rain erosion specimen locking mechanism of the present invention is to first install the test specimen on the surface of the support block when conducting a rain erosion test, and then insert the support block into the installation notch on the loading platform. The transmission member is driven to rotate by the rotating driving member, thereby driving the locking member to move and lock the support block to achieve stable installation of the test specimen. When unlocking, the transmission member is driven to reset by the rotating driving member in the opposite direction, thereby releasing the locking force. The installation and disassembly operations are simple and convenient, saving time and effort, and the test specimen can be flush with the various surfaces of the loading platform to form a traceless structure, eliminating the gap after the test specimen is installed, and ensuring stable testing and accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention.

[0021] Figure 2 yes Figure 1 sectional view of .

[0022] Figure 3 It is a schematic structural diagram of the loading platform of the present invention.

[0023] Figure 4 yes Figure 3 sectional view of .

[0024] Figure 5 It is a partial structural diagram of the present invention.

[0025] Figure 6 It is a schematic diagram of the connection between the driving member, the transmission member and the locking member of the present invention.

[0026] Figure 7 It is a schematic diagram of the driving rod structure of the present invention.

[0027] Figure 8 It is a schematic structural diagram (stereoscopic diagram) of the support block of the present invention.

[0028] Figure 9 2 is a schematic diagram of the support block structure of Example 1 of the present invention (front view).

[0029] Figure 10 It is a schematic diagram of the support block structure of Example 2 of the present invention (front view).

[0030] Figure 11 2 is a schematic diagram of the support block structure of Example 3 of the present invention (front view).

[0031] The numbers in the figure represent:

[0032] 1. Loading platform; 11. Mounting notch; 111. Positioning step; 12. Mounting slot; 2. Test specimen; 21. Edge wrapping; 3. Support block; 31. Locking slot; 32. Support platform; 33. Insertion platform; 331. Positioning notch; 34. Slot; 4. Locking member; 41. Front locking block; 42. Rear locking block; 5. Driving member; 51. Worm; 511. Helical teeth; 512. Slot; 52. Crank handle; 6. Transmission member; 61. Worm gear shaft; 62. Gear; 7. Torsion spring; 8. Bolt. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 9 As shown, a first embodiment of the worm self-locking markless rain erosion specimen locking mechanism of the present invention includes a loading platform 1, a test specimen 2, a support block 3, a locking member 4, a driving member 5 and a transmission member 6. The loading platform 1 is provided with a mounting notch 11 on the part to be tested, and the test specimen 2 is mounted on the surface of the support block 3. The locking member 4 and the transmission member 6 are arranged in the mounting notch 11. The driving member 5 is mounted in the loading platform 1 and is connected to the locking member 4 through the transmission member 6. When locking, the support block 3 is inserted into the mounting notch 11, and the transmission member 6 is driven to rotate by the rotating driving member 5 to drive the locking member 4 to move and lock the support block 3. The test specimen 2 on the surface of the support block 3 is flush with the surfaces of the loading platform 1 to form a surface markless structure; when unlocking, the transmission member 6 is driven to rotate by the rotating driving member 5 to drive the locking member 4 to reset to release the locking and fixing force on the support block 3. When conducting a rain erosion test, the test specimen 2 is first mounted on the surface of the support block 3, and then the support block 3 is inserted into the mounting notch 11 on the loading platform 1. The transmission member 6 is driven to rotate by rotating the driving member 5, thereby driving the locking member 4 to move and lock the support block 3, so that the test specimen 2 is firmly installed. When unlocking, the transmission member 6 is driven to reset by rotating the driving member 5 in the opposite direction, thereby releasing the locking force. The installation and disassembly operations are simple and convenient, saving time and effort, and the test specimen 2 can be flush with the various surfaces of the loading platform 1 to form a seamless structure, eliminating the gap after the test specimen 2 is installed, and ensuring stable testing and accurate test results.

[0035] In this embodiment, a mounting groove 12 communicating with the mounting notch 11 is defined within the loading platform 1. The locking member 4 and the transmission member 6 are mounted together within the mounting groove 12. Locking grooves 31 are defined on the front and rear end walls of the support block 3. When locking, the driving member 5 rotates the transmission member 6 to drive the locking member 4 into the locking groove 31, thereby locking and securing the support block 3. When unlocking, the driving member 5 rotates the transmission member 6 to drive the locking member 4 back into the mounting groove 12, thereby releasing the locking force on the support block 3. In this structure, the rotating driving member 5 generates a force that drives the transmission member 6 to drive the locking member 4 into the locking groove 31 on the support block 3, thereby securing the support block 3. When unlocking, the driving member 5 drives the locking member 4 back into the locking groove 31, releasing the locking force. This structure is simple, reliable, and easy to operate.

[0036] In this embodiment, the locking member 4 includes a front locking block 41 and a rear locking block 42, which are slidably mounted in the mounting groove 12. The front locking block 41 and the rear locking block 42 are provided with racks connected to the transmission member 6. When locking, the front locking block 41 is driven by the driving member 5 to slide into the locking groove 31 on the front end wall of the support block 3, and the rear locking block 42 is driven by the driving member 5 to slide into the locking groove 31 on the rear end wall of the support block 3, thereby locking and fixing the support block 3. When unlocking, the driving member 5 drives the transmission member 6 to rotate, thereby simultaneously driving the front locking block 41 and the rear locking block 42 to slide into the mounting groove 12, thereby releasing the locking force on the support block 3. In this structure, the front locking block 41 and the rear locking block 42 are provided to lock and fix the support block 3 front and back, and the connection is firm and reliable.

[0037] In this embodiment, the driving member 5 includes a worm 51 and a crank 52. The worm 51 is movably mounted within the loading platform 1 via a bearing. One end of the worm 51 is located within the mounting slot 12 and is provided with a helical tooth 511 that connects to the transmission member 6. The other end extends to the end surface of the loading platform 1 and defines a slot 512 that engages with the crank 52. In this structure, the crank 52 and worm 51 are provided separately. When the worm 51 needs to be rotated, the crank 52 engages with the slot 512 to rotate the worm 51, which is simple and convenient to operate.

[0038] In this embodiment, a torsion spring 7 is disposed within the mounting groove 12 and is connected to the end of the worm 51. In this structure, the torsion spring 7 is connected to the end of the worm 51. When the support block 3 is locked, the torsion spring 7 is in a taut state, which can generate a certain force to tighten the worm 51. When the worm 51 rotates counterclockwise, the torsion spring 7 will continue to tighten, generating resistance that hinders the rotation of the worm 51, preventing the worm 51 from rotating and unlocking due to the action of centrifugal force during the test.

[0039] In this embodiment, the transmission member 6 includes a worm gear shaft 61 and a gear 62 mounted on the worm gear shaft 61. The worm gear shaft 61 is movably mounted within the mounting slot 12 via a bearing. The worm gear on the worm gear shaft 61 is meshed with the helical teeth 511, and the gear 62 is meshed with the racks on both the front locking block 41 and the rear locking block 42. In this structure, the meshing of the worm gear with the helical teeth 511 on the worm 51 provides a relatively large transmission ratio, so even slight deflection of the worm 51 does not affect the locking and securing effect. Furthermore, the meshing connection between the worm gear and the helical teeth on the worm 51 is inherently self-locking; after the worm 51 stops rotating, the worm gear cannot drive the worm 51 to rotate. Specifically, the front locking block 41 is set to a hook shape, and the front locking block 41 is connected to the bottom of the gear 62 through a rack meshing, and the rear locking block 42 is set to a long strip shape, which is meshed with the gear 62 above the gear 62 through a rack. When the worm 51 is rotated clockwise, the gear 62 on the worm shaft 61 rotates synchronously with the worm wheel, so that the front locking block 41 moves to the left to the locking groove 31 at the front end of the support block 3, and the rear locking block 42 moves to the right to the locking groove 31 at the rear end of the support block 3, locking the support block 3 in the installation notch 11.

[0040] In this embodiment, the support block 3 comprises a support platform 32 and an insertion platform 33 disposed at the bottom of the support platform 32. The test specimen 2 is wrapped and fixed to the surface of the support platform 32, and a locking slot 31 is defined in the end wall of the insertion platform 33. In this structure, the support platform 32 supports and shapes the test specimen 2, making it flush with all surfaces of the loading platform 1, forming a seamless structure.

[0041] In this embodiment, the insertion platform 33 is provided with positioning notches 331 at both ends, and the installation notch 11 is further provided with positioning steps 111 that cooperate with the positioning notches 331. In this structure, the positioning notches 331 cooperate with the positioning steps 111 to facilitate the positioning and installation of the support block 3.

[0042] Example 2:

[0043] In this embodiment, the bottom of the test specimen 2 is bent to form a rim 21, which is fastened to the bottom of the support platform 32 by bolts 8. In this structure, the connection and fixation by bolts 8 are stable and firm.

[0044] Example 3:

[0045] In this embodiment, the test specimen 2 has a bent edge 21 at the bottom. A slot 34 is provided between the bottom of the support platform 32 and the insertion platform 33, and the edge 21 is inserted into the slot 34. By providing the slot 34 at the bottom of the support platform 32 and inserting the edge 21, the test specimen 2 is firmly mounted on the surface of the support platform 2 and is not easily removed.

[0046] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A worm self-locking, traceless rain erosion specimen locking mechanism, characterized by: The invention comprises a loading platform (1), a test specimen (2), a support block (3), a locking member (4), a driving member (5) and a transmission member (6), wherein the loading platform (1) is provided with a mounting notch (11) at a portion to be tested, a mounting groove (12) communicating with the mounting notch (11) is provided in the loading platform (1), the locking member (4) and the transmission member (6) are installed together in the mounting groove (12), a locking groove (31) is provided on the front and rear end walls of the support block (3), the support block (3) comprises a support platform (32) and an insertion platform (33) arranged at the bottom of the support platform (32), the test specimen (2) is covered The locking member (4) is fixed on the surface of the support platform (32), the locking groove (31) is opened on the end wall of the insertion platform (33), the locking member (4) includes a front locking block (41) and a rear locking block (42), the front locking block (41) and the rear locking block (42) are slidably mounted in the installation groove (12), and the front locking block (41) and the rear locking block (42) are provided with a rack connected to the transmission member (6), the driving member (5) includes a worm (51) and a crank (52), the worm (51) is movably mounted in the loading platform (1) through a bearing, one end of the worm (51) is located in the installation groove (12) and is provided with a spiral connected to the transmission member (6). The tooth (511) is provided with a slot (512) for engaging with the crank (52) at the other end, and the transmission member (6) comprises a worm shaft (61) and a gear (62) mounted on the worm shaft (61). The worm shaft (61) is movably mounted in the mounting groove (12) through a bearing. The worm on the worm shaft (61) is meshed with the helical tooth (511). The gear (62) is also meshed with the racks on the front locking block (41) and the rear locking block (42). When locked, the crank (52) is driven to rotate the worm (51), and the helical tooth (511) rotates synchronously and drives the front locking block (41) and the rear locking block (42). The worm shaft (61) rotates, and the gear (62) rotates synchronously and drives the front locking block (41) to slide into the locking groove (31) on the front end wall of the insertion platform (33), and the rear locking block (42) to slide into the locking groove (31) on the rear end wall of the insertion platform (33) to lock and fix the support block (3). At this time, the test specimen (2) and the surfaces of the loading platform (1) are flush to form a surface-markless structure; when unlocking, the crank (52) is driven to rotate the worm (51) in the opposite direction to simultaneously drive the front locking block (41) and the rear locking block (42) to slide into the installation groove (12) to release the locking force on the support block (3).

2. The worm self-locking non-marking rain erosion specimen locking mechanism according to claim 1 is characterized in that: A torsion spring (7) is provided in the installation groove (12), and the torsion spring (7) is connected to the end of the worm (51).

3. The worm self-locking non-marking rain erosion specimen locking mechanism according to claim 2, characterized in that: Positioning notches (331) are provided at both ends of the insertion platform (33), and a positioning step (111) is further provided in the installation notch (11) for cooperating with the positioning notches (331) for positioning.

4. The worm self-locking non-marking rain erosion specimen locking mechanism according to claim 3 is characterized in that: The bottom of the test specimen (2) is bent to form a rim (21), and the rim (21) is fastened to the bottom of the support platform (32) via bolts (8).

5. The worm self-locking non-marking rain erosion specimen locking mechanism according to claim 4 is characterized in that: The bottom of the test specimen (2) is bent to form a rim (21), a slot (34) is provided between the bottom of the support platform (32) and the insertion platform (33), and the rim (21) is inserted into the slot (34).

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