A shearing fork wave-absorbing translation mechanism

Abstract

The utility model discloses a kind of shearing fork type wave absorption translation mechanism, including translation component, containing translation platform and slide rail laid horizontally on ground, the translation platform is connected with slide rail by translation drive component;Lifting assembly contains base, shearing fork type lifting mechanism, lifting platform and lifting drive mechanism;The base is fixedly installed on ground, shearing fork type lifting mechanism lower end connects base, upper end connects lifting platform;The lifting drive mechanism acts on shearing fork type lifting mechanism to drive its lifting;The slide rail extends to the area below lifting platform, when lifting platform is lifted, translation platform can be horizontally moved to the below lifting platform to let out the unloading area right in front of shielding door. By the cooperation of shearing fork type lifting and translation movement, form the space below when lifting state is contained, so that complete operation area before shielding door can be accurately released after translation platform moves in, provide unobstructed passageway for large equipment to enter and exit.

Description

Technical Field

[0001] This utility model relates to the field of microwave anechoic chamber absorbing translation technology, and in particular to a scissor-type absorbing translation mechanism. Background Technology

[0002] In recent years, with the rapid development of electromagnetic technology, the demand for various microwave anechoic chambers, such as those for radar cross section (RCS) testing and electromagnetic compatibility (EMC), has been increasing. As the size and number of devices under test (DUTs) grow, the area and frequency of removing and reinstalling absorbing material during DUT installation have also increased. Current solutions often involve designing a traverse trolley at the main entrance, with absorbing material installed on its surface. During use, the trolley is manually moved to remove the absorbing material, and after DUT installation, it is moved back to the trolley. This solution is labor-intensive, inefficient, and the trolley's poor repositioning ability affects the consistency of the anechoic chamber's electromagnetic performance. Another common solution involves digging a pit at the main entrance of the anechoic chamber, installing lifting poles, raising and lowering the absorbing plate to a certain height, and then moving the traverse absorbing plate below the raising and lowering plate to create space for the DUT to enter the anechoic chamber. This solution increases the amount of civil engineering work by excavating multiple pits, and the multiple lifting poles have poor synchronization and weak resistance to lateral tilting, making them prone to significant swaying. In summary, all existing solutions suffer from low efficiency and poor stability. Therefore, it is particularly necessary to design a high-efficiency and stable wave-absorbing translation mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a scissor-type wave-absorbing translation mechanism to solve the problems of poor lifting synchronization and stability, complex construction due to ground excavation, and low efficiency of manual handling in existing solutions.

[0004] This utility model is achieved using the following technical solution: a scissor-type wave-absorbing translation mechanism, characterized in that it includes a translation component comprising a translation platform and a horizontally laid slide rail on the ground, the translation platform being connected to the slide rail via a translation drive component; a lifting component comprising a base, a scissor-type lifting mechanism, a lifting platform, and a lifting drive mechanism; the base is fixedly installed on the ground, the lower end of the scissor-type lifting mechanism is connected to the base, and the upper end is connected to the lifting platform; the lifting drive mechanism acts on the scissor-type lifting mechanism to drive its lifting; the slide rail extends to the area below the lifting platform, and when the lifting platform is raised, the translation platform can move horizontally to below the lifting platform to make way for the unloading area directly in front of the shielded door. Through the coordination of scissor-type lifting and translation movements, a lower accommodating space is formed in the raised state, allowing the translation platform to accurately release the complete working area in front of the shielded door after it moves in, providing an unobstructed passage for the entry and exit of large equipment. Furthermore, the translation drive assembly includes a drive motor, a gear connected to the drive motor, and a rack fixed to the translation platform; the gear meshes with the rack. The use of a gear and rack transmission structure ensures stable output of the translation drive force and precise displacement control; the cooperation between the servo motor and the gear and rack ensures seamless splicing after the absorbing material is reset. Furthermore, the racks are symmetrically arranged on both sides of the translation platform, and two sets of gears and drive motors are correspondingly arranged. The dual-sided symmetrical drive layout effectively counteracts the eccentric torque during translation, significantly improving the stability of platform movement; at the same time, the dual-motor redundancy design enhances system reliability, ensuring basic operational functions can be maintained even if one side fails.

[0005] Furthermore, the scissor lift mechanism consists of two sets of interlocking links; the lift drive mechanism is a telescopic assembly, with both ends hinged to the two sets of interlocking links. The interlocking links form a stable triangular mechanical structure, giving the lifting process excellent anti-sway performance; the telescopic assembly directly drives the scissor hinge point, efficiently converting linear thrust into vertical lifting motion of the platform. Furthermore, the upper surfaces of both the translation platform and the lifting platform are covered with microwave absorbing material, and in the reset state, their surfaces remain flush with the microwave absorbing material on the ground. During reset, the microwave absorbing material on the platform forms a seamless plane with the microwave absorbing material on the fixed ground, fully meeting the stringent requirements of microwave anechoic chambers for electromagnetic wave uniformity.

[0006] Furthermore, the scissor lift mechanism has a symmetrical structure.

[0007] Furthermore, the scissor lift mechanism is connected to the base and the lifting platform in the same way.

[0008] The scissor-type wave-absorbing translation mechanism described in this utility model has the following advantages: By using a scissor lift mechanism directly installed on the ground in conjunction with the translation components, the construction complexity and poor lifting synchronization and stability issues caused by digging a pit at the entrance of the dark room to install the lifting pole, as well as the problems of conventional solutions, are avoided. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0010] Figure 1 A schematic diagram of a scissor-type wave-absorbing translation mechanism in its lifting state; Figure 2 A schematic diagram of the stowed state of a scissor-type wave-absorbing translation mechanism; Figure 3 This is a schematic diagram of a scissor-type microwave absorbing translation mechanism in a state where no microwave absorbing material is placed. Figure 4 This is a schematic diagram of the translation component; Figure 5 This is a schematic diagram of the lifting assembly; In the diagram, 1-translation assembly, 2-lifting assembly, 3-ground, 4-shielded door, 5-wave-absorbing material, 6-unloading area, 11-translation platform, 12-drive motor, 13-gear, 14-slide rail, 15-rack, 21-lifting platform, 22-scissor lift assembly, 23-base, 24-telescopic assembly, 25-track. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0012] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0013] like Figure 1-5 As shown, a scissor-type microwave absorbing translation mechanism is specifically applied to the entrance area of ​​a microwave anechoic chamber. This mechanism mainly includes a translation component 1 and a lifting component 2, both fixedly mounted on the ground 3 inside the shielded door 4 of the microwave anechoic chamber. The translation component 1 is located near the shielded door 4. When the lifting component 2 is in the raised state, the vertical space it occupies is released, allowing the translation component 1 to move horizontally and be completely retracted below the raised lifting component 2. Through this coordinated action, the unloading area 6, originally covered by the translation component 1 and located directly in front of the shielded door 4, is completely cleared, providing the necessary space for the entry, placement, and operation of large test components.

[0014] Specifically, the translation component 1 includes a translation platform 11 and a slide rail 14, with the translation platform 11 being the core load-bearing structure. The translation platform 11 is typically welded or assembled from a robust metal frame and load-bearing panels, possessing sufficient rigidity and load-bearing capacity. The upper surface of the translation platform 11 is used to lay or install microwave absorbing material 5. In the reset state, its microwave absorbing material 5 must be precisely flush with the microwave absorbing material of the surrounding ground 3 and the lifting platform 21, together forming a complete anechoic chamber microwave absorbing floor.

[0015] The lifting assembly 2 includes a lifting platform 21 and a scissor lift assembly 22. The lifting platform 21 is mounted above the scissor lift assembly 22 and has a structure similar to the translation platform 11, consisting of a rigid frame and a panel, on which wave-absorbing material 5 is also laid. In the reset state, the lifting platform 21 is at its lowest position, and its wave-absorbing material surface is flush with the wave-absorbing material of the translation platform 11 and the ground 3. When the lifting assembly 2 is driven to lift, the lifting platform 21 rises to a set height as the scissor lift assembly 22 extends.

[0016] The slide rail 14 is located below the scissor lift assembly 22 and extends to the unloading area 6. The translation platform 11 is slidably connected to the slide rail 14 and is driven to move on the slide rail 14 by the drive assembly. The lifting platform 21 is located above the scissor lift assembly 22 and is lifted by the telescopic assembly 24 driving the scissor lift assembly 22.

[0017] The driving component of the translation assembly 1 includes a drive motor 12, a gear 13 and a rack 15. The rack 15 is disposed on both sides of the translation platform 11. The gear 13 and the rack 15 mesh. The drive motor 12 drives the gear 13 to rotate, thereby driving the rack 15 to move, so as to realize the movement of the translation platform 11 on the slide rail 14.

[0018] The scissor lift assembly 22 consists of two sets of interlocking hinged links. The telescopic component 24 is positioned between the two sets of links. By converting the telescopic movement of the telescopic component 24 into the rotational movement of the two sets of links, the lifting effect of the scissor lift assembly 22 is achieved. The lifting platform 21 is connected to the upper part of the scissor lift assembly 22, and a base 23 is connected to the lower part. The scissor lift assembly 22 has a symmetrical structure, and it uses the same connection method with both the lifting platform 21 and the base 23. Taking the base 23 as an example, one end of the bottom of the scissor lift assembly 22 is hinged to the base 23, and the other end is slidably connected to the track 25 on the base 23.

[0019] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A scissor-type wave-absorbing translation mechanism, characterized in that, The system includes a translation component (1), comprising a translation platform (11) and a slide rail (14) laid horizontally on the ground (3), wherein the translation platform (11) is connected to the slide rail (14) via a translation drive component; and a lifting component (2), comprising a base (23), a scissor lift mechanism, a lifting platform (21), and a lifting drive mechanism; wherein the base (23) is fixedly installed on the ground (3), the lower end of the scissor lift mechanism is connected to the base (23), and the upper end is connected to the lifting platform (21); the lifting drive mechanism acts on the scissor lift mechanism to drive it to lift; the slide rail (14) extends to the area below the lifting platform (21), and when the lifting platform (21) is raised, the translation platform (11) can move horizontally to the area below the lifting platform (21) to make way for the unloading area (6) directly in front of the shielding door (4).

2. The scissor-type wave-absorbing translation mechanism according to claim 1, characterized in that, The translation drive assembly includes a drive motor (12), a gear (13) connected to the drive motor (12), and a rack (15) fixed to the translation platform (11); the gear (13) meshes with the rack (15).

3. The scissor-type wave-absorbing translation mechanism according to claim 2, characterized in that, The rack (15) is symmetrically arranged on both sides of the translation platform (11), and the gear (13) and drive motor (12) are arranged in two sets respectively.

4. The scissor-type wave-absorbing translation mechanism according to claim 3, characterized in that, The scissor lift mechanism consists of two sets of interlocking links; the lifting drive mechanism is a telescopic assembly (24), whose two ends are respectively hinged to the two sets of interlocking links.

5. A scissor-type wave-absorbing translation mechanism according to claim 1, characterized in that, The upper surfaces of the translation platform (11) and the lifting platform (21) are covered with wave-absorbing material (5), and in the reset state, their surfaces are flush with the wave-absorbing material (5) on the ground (3).

6. The scissor-type wave-absorbing translation mechanism according to claim 1, characterized in that, The scissor lift mechanism has a symmetrical structure.

7. A scissor-type wave-absorbing translation mechanism according to claim 6, characterized in that, The scissor lift mechanism is connected to the base (23) and the lifting platform (21) in the same way.

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