Low-scattering metal support pitching assembly
By adopting hydraulic cylinder transmission and multi-stage cylinder forms in the low-scattering metal bracket pitch mechanism, combined with fine-tuning columns to achieve mechanical positioning locking, the problems of low efficiency, large space and high cost in the pitch mechanism in the prior art are solved, and an efficient, compact and low-cost pitch structure is achieved.
Patent Information
- Application Number
- CN202422356264.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing low-scattering metal bracket pitch mechanism has problems such as poor heavy load accuracy, slow speed, low transmission efficiency and high failure rate. The pitch structure occupies a large space, which increases the difficulty of darkroom design and construction cost.
The hydraulic cylinder transmission method is adopted to achieve small space and large strokes through the multi-stage cylinder form, and the pitch twisted points of the rear low-scattering metal bracket are set up to achieve mechanical positioning and locking of the column.
It improves the efficiency and stability of the pitch action of the low-scattering metal bracket, reduces the failure rate and space occupation, reduces the cost of darkroom construction, and simplifies the working locking and adjustment process.
Smart Images
Figure CN223019846U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-scattering metal brackets for microwave anechoic chamber measurement, and specifically relates to a pitch assembly of a low-scattering metal bracket. Background Art
[0002] The low-scattering metal bracket is an important component for supporting the target to be measured in the RCS measurement of the compact range of the microwave anechoic chamber. It has a low RCS value at high frequencies and is suitable for supporting targets to be measured with high frequencies, heavy loads, and large volumes. The pitch assembly is mainly applied to the retractable low-scattering metal bracket system to realize the functions of deploying the low-scattering metal bracket in the working state and storing and hiding it in the non-working state. The existing pitch mechanisms of low-scattering metal brackets generally adopt the form of a screw-driven slider link or an electric rod-driven pitch hinge to achieve the pitch of the bracket. At the same time, the pitch hinge points are often set at the front end of the pitch assembly. Therefore, there are the following deficiencies: 1. The screw-driven structure has problems such as poor accuracy under heavy loads, slow speed, low transmission efficiency, and high failure rate, while the electric rod drive has problems such as large volume of the heavy-duty electric rod and insufficient pushing and pulling force. 2. Due to the limitation of the stroke, the pitch rotation hinge points are set at the front end of the structure, resulting in a larger space occupied by the entire pitch structure, increasing the difficulty of anechoic chamber design and construction costs. 3. After the pitch structure is opened, the flange of the bracket column needs to be connected and locked with the pitch structure by manually screwing bolts, with high labor intensity and long switching time. Therefore, it is particularly necessary to design an efficient, stable, and multifunctional pitch structure for low-scattering metal brackets. Summary of the Utility Model
[0003] In order to solve the above problems, the utility model provides a pitch assembly of a low-scattering metal bracket, including a column support seat, a pitch rail vehicle, and a hydraulic cylinder; the column support seat is installed on the pitch rail vehicle through a pitch shaft; the hydraulic cylinder is fixedly installed on the pitch rail vehicle, and the upper end of the hydraulic cylinder is fixedly connected with the column support seat through a cylinder pin shaft.
[0004] Further, the column support seat is integrally in a box structure, specifically including: a fine-tuning column, a flange plate, an oil cylinder double ear seat, and a rotating shaft; the fine-tuning column is arranged below the front end of the column support seat for adjusting the forward inclination angle of the column; the flange plate is fixedly installed at the upper end of the column support seat; the oil cylinder double ear seat is arranged inside the box near the fine-tuning column for connecting with the hydraulic cylinder; the rotating shaft is arranged at the lower end of the box for connecting with the pitch rail vehicle.
[0005] Further, the fine-tuning column is screwed to the column support seat, and the forward inclination angle of the flange plate is adjusted by a knob thread.
[0006] Further, the overall structure of the pitching rail vehicle is in a 'concave' shape, specifically including: a base, two vehicle frames, an oil cylinder support, a slewing ear seat, a guide rail slider, and a hydraulic motor; the oil cylinder support is arranged on the base and connected to a hydraulic oil cylinder; the overall shape of the vehicle frame is a right trapezoid; the slewing ear seat is arranged at the top of the vehicle frame and connected to a column support seat through a pin shaft; the guide rail slider is arranged at the bottom of the base and used to realize the sliding of the rail vehicle; there is a cavity inside the base, and the hydraulic motor is arranged in the cavity inside the base.
[0007] Further, it also includes a counterweight mounting plate and counterweight blocks; the counterweight mounting plate is fixedly installed on the outer side of the long side of the vehicle frame through nuts, a chute is arranged on the counterweight mounting plate, and the counterweight blocks are installed on the counterweight mounting plate through the chute.
[0008] Further, it also includes a mechanical limit structure, which is arranged on the base and used to prevent the column support seat from colliding with the pitching rail vehicle during slewing.
[0009] Further, it also includes a pitching angle feedback component, and the pitching angle feedback component specifically includes a pitching angle encoder; the pitching angle encoder is arranged on the outer side of the pitching single ear seat and used to detect whether the pitching angle of the column support seat meets the standard.
[0010] Further, both ends of the hydraulic oil cylinder are provided with oil cylinder pin shafts, and the oil cylinder pin shafts are respectively used to connect the column support seat and the pitching rail vehicle.
[0011] The present utility model provides a pitching component of a low-scattering metal bracket, which has the following beneficial effects:
[0012] 1. The pitching component provided by the present utility model adopts a hydraulic oil cylinder drive mode to realize the pitching action of the low-scattering metal bracket. Since the hydraulic oil cylinder has high speed, large force and good stability, the efficiency of the pitching action of the low-scattering metal bracket is higher, and the probability of failure is lower.
[0013] 2. By using the pitching component provided by the present utility model in the form of a multi-stage oil cylinder, a large stroke can be realized in a small space, and the pitching hinge point of the rear-mounted low-scattering metal bracket is adopted, thereby reducing the front space of the pitching hinge point, making the pitching transmission structure more compact, occupying less space, and greatly reducing the construction cost of the darkroom.
[0014] 3. The pitching component provided by the present utility model can realize mechanical positioning and locking of the column after the low-scattering metal bracket is pitched and opened by setting a fine-tuning column, reducing the labor intensity of mechanical positioning and locking, making the locking and adjustment in the working state simpler, and having lower operating costs. Description of the Drawings
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0016] Figure 1 Structural schematic diagram of the pitching assembly of the low-scattering metal bracket provided by the present invention;
[0017] Figure 2 Structural schematic diagram of the recovered state of the pitching assembly of the low-scattering metal bracket provided by the present invention;
[0018] Figure 3 Structural schematic diagram of the column support seat provided by the present invention;
[0019] Figure 4 Structural schematic diagram of the pitching rail vehicle provided by the present invention.
[0020] In the figure, 1 is the column support seat; 2 is the pitching rail vehicle; 3 is the hydraulic cylinder; 11 is the fine-tuning column; 12 is the flange plate; 13 is the double-ear seat of the oil cylinder; 14 is the rotating shaft; 21 is the vehicle frame; 22 is the oil cylinder support; 23 is the rotating ear seat; 24 is the guide rail slider; 25 is the hydraulic motor; 26 is the counterweight mounting plate; 27 is the pitching angle feedback assembly; 31 is the oil cylinder pin shaft. Detailed implementation manners
[0021] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0022] The following will detail the implementation methods of the present invention in conjunction with the drawings. What is described is only some embodiments, not all embodiments. For the purpose of clarity, representations and descriptions unrelated to the present invention are omitted in the drawings and the description.
[0023] To have a clearer understanding of the technical features, objectives, and beneficial effects of the present invention, the technical solutions of the present invention are now described in detail as follows. Obviously, the described embodiments are some embodiments of the present invention, not all embodiments, and should not be construed as limiting the scope of implementation of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.
[0024] Such as Figure 1 、 Figure 2As shown in the figure, the present utility model provides a pitch assembly of a low-scattering metal bracket, which includes a column support base 1, a pitch rail vehicle 2, and a hydraulic cylinder 3; the column support base 1 is installed on the pitch rail vehicle 2 by bolts; the hydraulic cylinder 3 is fixedly installed on the pitch rail vehicle 2, and the upper end of the hydraulic cylinder 3 is fixedly connected to the column support base 1 by nuts. Among them, both ends of the hydraulic cylinder 3 are provided with cylinder pin shafts 31, and the cylinder pin shafts 31 are respectively used to connect the column support base 1 and the pitch rail vehicle 2.
[0025] As Figure 3 shown, the column support base 1 is integrally in a box structure, specifically including: a fine-tuning column 11, a flange plate 12, an oil cylinder double ear seat 13, and a rotating shaft 14; the fine-tuning column 11 is arranged below the front end of the column support base 1 and is used to adjust the forward inclination angle of the column; the flange plate 12 is fixedly installed at the upper end of the column support base 1; the oil cylinder double ear seat 13 is arranged inside the box near the fine-tuning column 11 and is used to connect with the hydraulic cylinder 3; the rotating shaft 14 is arranged at the lower end of the box and is used to connect the pitch rail vehicle 2. The fine-tuning column 11 is screwed to the column support base 1, and the forward inclination angle of the flange plate 12 is adjusted by rotating the screw thread.
[0026] As Figure 4 shown, the pitch rail vehicle 2 is integrally in a 'concave' shape structure, specifically including: a base, two vehicle frames 21, an oil cylinder support 22, a rotating ear seat 23, a guide rail slider 24, and a hydraulic motor 25; the oil cylinder support 22 is arranged on the base and is connected to the hydraulic cylinder 3; the vehicle frame 21 is integrally in a right-angled trapezoid shape; the rotating ear seat 23 is arranged at the top of the vehicle frame 21 and is connected to the column support base 1 by a pin shaft; the guide rail slider 24 is arranged at the bottom of the base and is used to realize the sliding of the rail vehicle; there is a cavity inside the base, and the hydraulic motor 25 is arranged in the cavity inside the base.
[0027] It further includes a counterweight mounting plate 26, a counterweight block, a mechanical limit structure, and a pitch angle feedback assembly 27; the counterweight mounting plate 26 is fixedly installed on the outer side of the long side of the vehicle frame 21 by nuts, a chute is arranged on the counterweight mounting plate 26, and the counterweight block is installed on the counterweight mounting plate 26 through the chute; the mechanical limit structure is arranged on the base and is used to prevent the column support base 1 from colliding with the pitch rail vehicle 2 during rotation; the pitch angle feedback assembly 27 specifically includes a pitch angle encoder; the pitch angle encoder is arranged on the outside of the pitch single ear seat and is used to detect whether the pitch angle of the column support base 1 meets the standard.
[0028] The working principle of the pitching assembly of the low-scattering metal bracket provided by the utility model is as follows: when the darkroom is ready to start testing with the low-scattering metal bracket, first drive the piston of the secondary oil cylinder to gradually extend completely. At this time, the mounting plate on the upper surface of the column support base 1 tends to be horizontal. Through the detection of the pitching angle encoder, when the upper surface mounting plate is about 1° greater than the horizontal, stop the operation of the oil cylinder. Then drive the hydraulic motor 25 of the pitching trolley to run the entire pitching assembly to the working position in the middle of the guide rail through the guide rail slider 24. At this time, retract the oil cylinder to place the fine-tuning support column on the column of the auxiliary support rail car, and then manually turn the fine-tuning support column to adjust the mounting plate of the column support column to the horizontal state, and then conduct the test. After the test is completed, lift the column support base 1 by the oil cylinder to separate the fine-tuning support column from the column of the auxiliary support rail car, and then drive the hydraulic motor 25 to run the pitching assembly to the hidden position at the end of the rail, and continue to retract the stroke of the oil cylinder piston rod. At this time, the pitching assembly reaches the storage state. Repeat the same action to realize the reciprocating pitching process of the pitching assembly.
[0029] In the utility model, the pitching speed is faster, the force is greater, the stability is better, the failure rate is lower, and the work efficiency is greatly improved; the pitching transmission structure is more compact, occupies less space, and greatly reduces the construction cost of the darkroom; the locking and adjustment in the working state are simpler, and the operation cost is lower.
[0030] The above is only the preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the utility model shall fall within the protection scope of the appended claims of the utility model.
Claims
1. A low-scattering metal bracket pitch assembly, characterized in that: It comprises a column support seat (1), a pitch rail vehicle (2), and a hydraulic cylinder (3); The column support seat (1) is mounted on the pitch rail vehicle (2) via a pitch axis; the hydraulic cylinder (3) is fixedly mounted on the pitch rail vehicle (2), and the upper end of the hydraulic cylinder (3) is fixedly connected to the column support seat (1) via a cylinder pin.
2. The low-scattering metal bracket pitch assembly according to claim 1, characterized in that: The column support seat (1) is a box structure as a whole, and specifically comprises: a fine-tuning column (11), a flange plate (12), a cylinder double-ear seat (13), and a rotary shaft (14); The fine-tuning column (11) is arranged below the front end of the column support seat (1) and is used to adjust the forward tilt angle of the column; the flange plate (12) is fixedly mounted on the upper end of the column support seat (1); the cylinder double-ear seat (13) is arranged inside the box body near the fine-tuning column (11) and is used to be connected to the hydraulic cylinder (3); the rotary shaft (14) is arranged at the lower end of the box body and is used to be connected to the pitch rail car (2).
3. The low-scattering metal bracket pitch assembly according to claim 2, characterized in that: The fine-tuning column (11) is screwed to the column support seat (1), and the forward tilt angle of the flange plate (12) is adjusted by means of a knob thread.
4. The low-scattering metal bracket pitch assembly according to claim 1, characterized in that: The pitch rail vehicle (2) is in an overall "concave" structure, specifically comprising: a base, two vehicle frames (21), a cylinder support (22), a swivel ear seat (23), a guide rail slider (24), and a hydraulic motor (25); The oil cylinder support (22) is arranged on the base and connected to the hydraulic oil cylinder (3); the vehicle frame (21) is in the shape of a right-angled trapezoid as a whole; the swivel ear seat (23) is arranged at the top of the vehicle frame (21) and is connected to the column support seat (1) via a pin shaft; the guide rail slider (24) is arranged at the bottom of the base and is used to realize the sliding of the rail vehicle; there is a cavity in the base, and the hydraulic motor (25) is arranged in the cavity in the base.
5. The low-scattering metal support pitch assembly according to claim 4, characterized in that: It also includes a counterweight mounting plate (26) and a counterweight block; the counterweight mounting plate (26) is fixedly mounted on the outer side of the long side of the vehicle frame (21) by means of nuts; a slide groove is provided on the counterweight mounting plate (26); and the counterweight block is mounted on the counterweight mounting plate (26) by means of the slide groove.
6. The low-scattering metal support pitch assembly according to claim 5, characterized in that: It also comprises a mechanical limiting structure, which is arranged on the base and is used to prevent the column support seat (1) from colliding with the pitch rail vehicle (2) when rotating.
7. The low-scattering metal support pitch assembly according to claim 6, characterized in that: It also includes a pitch angle feedback component (27), which specifically includes a pitch angle encoder; the pitch angle encoder is arranged on the outside of the pitch single ear seat and is used to detect whether the pitch angle of the column support seat (1) meets the standard.
8. The low-scattering metal support pitch assembly according to claim 1, characterized in that: Both ends of the hydraulic cylinder (3) are provided with cylinder pins (31), and the cylinder pins (31) are used to connect the column support seat (1) and the pitch rail car (2) respectively.