Radar transportation supporting and damping device

Abstract

The invention discloses a radar transportation supporting and damping device which comprises a supporting platform, a rack, a magnetorheological damper, a first connecting rod, a second connecting rod, a first sliding block and a second sliding block. The first sliding block is slidably mounted on the supporting platform, the second sliding block is slidably mounted on the rack, and the sliding directions of the first sliding block and the second sliding block are parallel; one end of the first connecting rod is rotationally connected with the rack, and the other end is rotationally connected with the first sliding block; one end of the second connecting rod is rotationally connected with the rack, and the other end is rotationally connected with the second sliding block; the first connecting rod and the second connecting rod are crossed; the two ends of the magneto-rheological damper are connected with the rack and the second sliding block correspondingly. When the supporting platform vibrates relative to the rack, the first sliding block slides relative to the supporting platform, the second sliding block slides relative to the rack, buffering is conducted through the magnetorheological damper, damping can be adjusted by changing the current input into the magnetorheological damper so as to adapt to vibration generated under different working conditions, and the supporting and vibration reduction effects can be better.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction devices, and in particular to a radar transport support vibration reduction device. Background Art

[0002] As a relatively precise instrument, radar has high requirements on the vibration reduction capacity of the suspension device of the transport vehicle during transportation. Most of the suspension devices of traditional transport vehicles adopt mechanical structures, which use the elasticity and damping of vibration reduction elements such as springs and rubber pads to reduce vibration. They have good stability and relatively mature designs. Most of the suspension devices of traditional transport vehicles are passive control systems. They do not require external energy drive, but rely on the characteristics of the material itself to absorb and attenuate vibration. Therefore, they are relatively stable and have good effects on vibrations in a specific frequency range. However, they perform generally in complex environments with large frequency changes, and it is difficult to effectively control wide-band vibrations. In addition, the mechanical structure cannot adjust the damping or stiffness in real time according to the actual situation, and is not adaptable to vibrations under different working conditions. Therefore, it is necessary to design a radar transport support vibration reduction device applied to the suspension device of the vehicle, which can adjust the damping or stiffness in real time, so as to facilitate the transportation of precision instruments with high vibration reduction requirements, such as radars. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a radar transport support vibration reduction device capable of adjusting damping or stiffness in real time.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a radar transport support and vibration reduction device, comprising a support platform, a frame, a magnetorheological damper, a first connecting rod, a second connecting rod, a first slider and a second slider; the first slider is slidably installed on the support platform, the second slider is slidably installed on the frame, and the sliding directions of the first slider and the second slider are parallel; one end of the first connecting rod is rotatably connected to the frame, the other end of the first connecting rod is rotatably connected to the first slider, one end of the second connecting rod is rotatably connected to the frame, the other end of the second connecting rod is rotatably connected to the second slider, and the first connecting rod and the second connecting rod are cross-arranged; the two ends of the magnetorheological damper are respectively connected to the frame and the second slider.

[0005] The beneficial effect of the present invention is that when the support platform of the radar transport support vibration reduction device vibrates relative to the frame, the first slider will slide relative to the support platform, the second slider will slide relative to the frame, and the second slider is buffered by the magnetorheological damper, thereby reducing the vibration of the support platform. Furthermore, by changing the current input to the magnetorheological damper, the damping can be adjusted to adapt to the vibration occurring under different working conditions, so that the support and vibration reduction effects are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the overall structure of the radar transport support vibration reduction device according to the first embodiment of the present invention; Figure 2 It is a top view of a magnetorheological damper, a second guide shaft and a second sliding block in a radar transport support vibration reduction device according to Embodiment 1 of the present invention; Figure 3 It is a front view of the bottom plate, the mounting plate and the height adjustment assembly of the radar transport support and vibration reduction device according to the first embodiment of the present invention; Figure 4 It is a front view of the support platform, the first guide shaft, the first connecting rod, the second connecting rod, the second guide shaft and the mounting plate in the radar transport support and vibration reduction device according to the first embodiment of the present invention; Figure 5 This is a force analysis diagram of the radar transport support vibration reduction device according to the first embodiment of the present invention.

[0007] Description of labels: 1. Support platform; 11. First guide shaft; 2. Frame; 21. Second guide shaft; 22. Bottom plate; 23. Mounting plate; 24. Height adjustment assembly; 241. Fixing bolt; 242. Adjusting bolt; 243. Locking nut; 25. Frame; 3. Magnetorheological damper; 4. First connecting rod; 5. Second connecting rod; 6. The first slider; 7. Second slider; 8. Elastic parts. DETAILED DESCRIPTION

[0008] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0009] Please refer to Figures 1 to 5 A radar transport support vibration reduction device comprises a support platform 1, a frame 2, a magnetorheological damper 3, a first connecting rod 4, a second connecting rod 5, a first slider 6 and a second slider 7; the first slider 6 is slidably mounted on the support platform 1, the second slider 7 is slidably mounted on the frame 2, and the sliding directions of the first slider 6 and the second slider 7 are parallel; one end of the first connecting rod 4 is rotatably connected to the frame 2, the other end of the first connecting rod 4 is rotatably connected to the first slider 6, one end of the second connecting rod 5 is rotatably connected to the frame 2, the other end of the second connecting rod 5 is rotatably connected to the second slider 7, and the first connecting rod 4 and the second connecting rod 5 are cross-arranged; the two ends of the magnetorheological damper 3 are respectively connected to the frame 2 and the second slider 7.

[0010] From the above description, it can be seen that the beneficial effect of the present invention is that when the support platform 1 of the radar transport support and vibration reduction device vibrates relative to the frame 2, the first slider 6 will slide relative to the support platform 1, the second slider 7 will slide relative to the frame 2, and the second slider 7 is buffered by the magnetorheological damper 3, thereby reducing the vibration of the support platform 1. Furthermore, by changing the current input to the magnetorheological damper 3, the damping can be adjusted to adapt to the vibration occurring under different working conditions, so that the support and vibration reduction effects are better.

[0011] Furthermore, the axial direction of the magnetorheological damper 3 is parallel to the sliding direction of the first sliding block 6 .

[0012] It can be known from the above description that the axial direction of the magnetorheological damper 3 is parallel to the sliding direction of the first slider 6 , which can facilitate the calculation of the current input into the magnetorheological damper 3 .

[0013] Furthermore, the middle portion of the first connecting rod 4 and the middle portion of the second connecting rod 5 are rotatably connected.

[0014] It can be seen from the above description that the first connecting rod 4 and the second connecting rod 5 move synchronously, which is beneficial to improving the overall structural strength of the vibration reduction device and extending the service life of the first connecting rod 4 and the second connecting rod 5.

[0015] Furthermore, it also includes an elastic member 8, two ends of which are respectively in contact with the frame 2 and the second sliding block 7.

[0016] It can be seen from the above description that the elastic member 8 can provide rigidity for the system and can drive the second sliding block 7 to return to the normal position.

[0017] Furthermore, the elastic member 8 is a spring, a spring sheet or a spring washer.

[0018] It can be seen from the above description that the type of the elastic member 8 can be selected according to actual use requirements or production conditions.

[0019] Furthermore, a first guide shaft 11 is provided on the support platform 1 , and the first sliding block 6 is slidably matched with the first guide shaft 11 .

[0020] It can be seen from the above description that the first guide shaft 11 can accurately constrain the sliding direction of the first sliding block 6 .

[0021] Furthermore, the frame 2 is provided with a second guide shaft 21 , and the second sliding block 7 is slidably matched with the second guide shaft 21 .

[0022] It can be seen from the above description that the second guide shaft 21 can accurately constrain the sliding direction of the second sliding block 7 .

[0023] Furthermore, there are multiple second guide shafts 21 , and the axial directions of the multiple second guide shafts 21 are arranged in parallel. The second sliding block 7 is slidably matched with the multiple second guide shafts 21 .

[0024] It can be seen from the above description that the plurality of second guide shafts 21 can improve the overall structural strength and prevent the second sliding block 7 from being deflected during long-term use.

[0025] Furthermore, the second connecting rods 5 are respectively provided on both sides of the second sliding block 7 .

[0026] It can be seen from the above description that the plurality of second connecting rods 5 can reduce the risk of the supporting platform 1 tilting.

[0027] Furthermore, the frame 2 includes a base plate 22, a mounting plate 23 and a plurality of height adjustment components 24, the mounting plate 23 is connected to the base plate 22 via the plurality of height adjustment components 24, and the magnetorheological damper 3, the second slider 7 and the first connecting rod 4 are all connected to the mounting plate 23.

[0028] It can be seen from the above description that the height and the tilt angle of the mounting plate 23 can be adjusted by the height adjustment assembly 24 .

[0029] Please refer to Figures 1 to 5 , Embodiment 1 of the present invention is: a radar transport support vibration reduction device, comprising a support platform 1, a frame 2, a magnetorheological damper 3, a first connecting rod 4, a second connecting rod 5, a first slider 6 and a second slider 7; the first slider 6 is slidably installed on the support platform 1, the second slider 7 is slidably installed on the frame 2, and the sliding directions of the first slider 6 and the second slider 7 are parallel; one end of the first connecting rod 4 is rotatably connected to the frame 2, the other end of the first connecting rod 4 is rotatably connected to the first slider 6, one end of the second connecting rod 5 is rotatably connected to the frame 2, the other end of the second connecting rod 5 is rotatably connected to the second slider 7, and the first connecting rod 4 and the second connecting rod 5 are cross-arranged; the two ends of the magnetorheological damper 3 are respectively connected to the frame 2 and the second slider 7.

[0030] Specifically, Figure 1 and Figure 4As shown, the support platform 1 is horizontally arranged, the first connecting rod 4 and the second connecting rod 5 have the same outer dimensions, and the sliding directions of the first slider 6 and the second slider 7 are horizontal and parallel to each other. The axial direction of the magnetorheological damper 3 is parallel to the sliding direction of the first slider 6. The support platform 1 is provided with a first guide shaft 11, the number of the first guide shafts 11 is two, the axial directions of the two first guide shafts 11 are arranged in parallel, and the first slider 6 slides with the two first guide shafts 11. The frame 2 is provided with a second guide shaft 21, the number of the second guide shafts 21 is two, the circumferential directions of the two second guide shafts 21 are arranged in parallel, the axial direction of the second guide shaft 21 is arranged in parallel with the axial direction of the first guide shaft 11, and the two second sliders 7 slide with the second guide shaft 21. In other embodiments, the number of the first guide shafts 11 can be set to one, three or more; the number of the second guide shafts 21 can be set to one, three or more.

[0031] In order to make the first connecting rod 4 and the second connecting rod 5 move synchronously and improve the overall structural strength of the vibration reduction device, as shown in FIG. Figure 1 As shown, the middle portion of the first connecting rod 4 and the middle portion of the second connecting rod 5 are rotationally connected.

[0032] In order to prevent the support platform 1 from tilting to one side, Figure 1 As shown, first connecting rods 4 are respectively provided on both sides of the first slider 6, and second connecting rods 5 are respectively provided on both sides of the second slider 7, and the number of first connecting rods 4 and the number of second connecting rods 5 are connected in a one-to-one correspondence.

[0033] like Figure 1 and Figure 2 As shown, the radar transport support vibration reduction device also includes an elastic member 8, and the two ends of the elastic member 8 are respectively against the frame 2 and the second slider 7. Specifically, the elastic member 8 is a compression spring. The elastic member 8 is sleeved on the second guide shaft 21, and the two ends of the second slider 7 are respectively provided with elastic members 8. The elastic member 8 is used to apply elastic force to the second slider 7 so as to drive the second slider 7 to return to the normal state. When the second slider 7 moves in one direction, the length of one elastic member 8 decreases and is in a compressed state, and the length of the other elastic member 8 increases, but does not restore the original length and is still in a compressed state. The elastic member 8 is used to provide stiffness for the system, and the selection of the stiffness of the elastic member 8 matches the maximum output and the limit amplitude of the magnetorheological damper 3, that is, the spring coefficient is selected according to the displacement of the second slider 7 at the limit amplitude and the maximum output of the magnetorheological damper 3. In other embodiments, the elastic member 8 can be set as a spring sheet or a spring pad.

[0034] like Figure 1As shown, the frame 2 includes a frame 25, a bottom plate 22, a mounting plate 23 and a plurality of height adjustment components 24, the mounting plate 23 is connected to the bottom plate 22 through the plurality of height adjustment components 24, and the magnetorheological damper 3, the second slider 7 and the first connecting rod 4 are all connected to the mounting plate 23. The frame 25 is fixedly connected to the bottom plate 22, the mounting platform, the magnetorheological damper 3, the second slider 7, the first connecting rod 4 and the second connecting rod 5 are all arranged on the inner side of the frame 25, and the support platform 1 is arranged above the frame 25. Specifically, as Figure 3 As shown, the height adjustment assembly 24 includes a fixing bolt 241, an adjusting bolt 242 and a locking nut 243. The bottom end of the fixing bolt 241 is rotatably connected to the base plate 22. The adjusting bolt 242 is sleeved outside the fixing bolt 241. The fixing bolt 241 serves as the central axis of the adjusting bolt, and the central hole of the adjusting bolt 242 cooperates with the thread of the fixing bolt 241. The adjusting bolt 242 passes through the mounting plate 23 and is connected to the mounting plate 23 through a thread. The locking nut 243 cooperates with the adjusting bolt 242, and the mounting plate 23 is placed above the locking nut 243. When the height or tilt angle of the mounting plate 23 needs to be adjusted, the fixing bolt 241 is screwed so that it no longer presses against the adjusting bolt 242. At this time, the height of the mounting plate 23 can be adjusted by rotating the adjusting bolt 242. The rotation direction determines the direction of the up and down movement of the adjusting bolt 242, and the rotation angle determines the movement amplitude of the adjusting bolt 242. After determining the height of the mounting plate 23, the fixing bolt 241 is rotated so that the fixing bolt 241 presses against the adjusting bolt 242 to lock the adjusting bolt 242. Then, the locking nut 243 is tightened so that the locking nut presses against the bottom surface of the mounting plate 23 to prevent the mounting plate 23 from accidentally loosening during use. When the mounting plate 23 is at the lowest position, the bottom surface of the support platform 1 presses against the top surface of the frame 25, and the radar transport support vibration reduction device is in an idle state. When the radar transport support vibration reduction device needs to be used, the height of the mounting plate 23 is adjusted by the height adjustment component 24, so that the support platform 1 is suspended relative to the frame 2, and the support platform 1 can be fixedly connected to the radar subarray.

[0035] The telescopic structure composed of the first connecting rod 4 and the second connecting rod 5 converts the up and down vibration of the support platform 1 into the reciprocating motion of the piston rod of the magnetorheological damper 3. Ignoring factors such as friction and inelastic deformation, there is a functional relationship between the vertical force acting on the support platform 1 and the horizontal force on the piston rod of the magnetorheological damper 3. Please refer to Figure 5 , assuming that the distance between the rotation axes at both ends of the first connecting rod 4 is , assuming that the relative height of the rotation axis at both ends of the first connecting rod 4 in the vertical direction is , the force acting on the supporting platform 1 The piston rod of the magnetorheological damper 3 is in horizontal force The relationship between them is: . Amplitude of the piston rod of the magnetorheological damper 3 in the horizontal direction Amplitude of vertical vibration of support platform 1 The relationship between them is: .make ,when When the vertical force on the supporting platform 1 is Smaller than the force on the piston rod of the magnetorheological damper 3 in the horizontal direction , the amplitude of the support platform 1 in the vertical direction Greater than the horizontal amplitude of the piston rod of the magnetorheological damper 3 , that is, after the motion and force are transmitted through the telescopic structure, the force that the support platform 1 can bear is smaller than the force that the magnetorheological damper 3 can provide, but the maximum amplitude of the support platform 1 is larger than the horizontal amplitude of the piston rod of the magnetorheological damper 3. When the vibration amplitude of the support platform 1 is sacrificed, the force that the support platform 1 can bear is increased. By reasonably selecting the length of the connecting rod of the telescopic structure and the relative height of the hinge points at both ends of the connecting rod, a balance can be made between the force and amplitude of the support platform 1. ,Right now When , a more balanced vibration reduction performance can be obtained. At this time, the ratio of the force applied to the support platform 1 to the force applied to the piston rod is close to one, and the ratio of the amplitude of the support platform 1 in the vertical direction to the horizontal amplitude of the piston rod of the magnetorheological damper 3 is also close to one.

[0036] In summary, when the support platform of the radar transport support vibration reduction device provided by the present invention vibrates relative to the frame, the first slider will slide relative to the support platform, the second slider will slide relative to the frame, and the second slider is buffered by the magnetorheological damper, thereby reducing the vibration of the support platform. Furthermore, by changing the current input to the magnetorheological damper, the damping can be adjusted to adapt to the vibration occurring under different working conditions, so that the support and vibration reduction effects are better.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A radar transport support vibration reduction device, characterized in that: It includes a supporting platform, a frame, a magnetorheological damper, a first connecting rod, a second connecting rod, a first slider and a second slider; the first slider is slidably installed on the supporting platform, the second slider is slidably installed on the frame, and the sliding directions of the first slider and the second slider are parallel; one end of the first connecting rod is rotatably connected to the frame, the other end of the first connecting rod is rotatably connected to the first slider, one end of the second connecting rod is rotatably connected to the frame, the other end of the second connecting rod is rotatably connected to the second slider, and the first connecting rod and the second connecting rod are cross-arranged; the two ends of the magnetorheological damper are respectively connected to the frame and the second slider.

2. The radar transport support vibration reduction device according to claim 1, characterized in that: The axial direction of the magnetorheological damper is parallel to the sliding direction of the first sliding block.

3. The radar transport support vibration reduction device according to claim 1, characterized in that: The middle portion of the first connecting rod and the middle portion of the second connecting rod are rotatably connected.

4. The radar transport support vibration reduction device according to claim 1, characterized in that: It also includes an elastic member, two ends of which are respectively in contact with the frame and the second sliding block.

5. The radar transport support vibration reduction device according to claim 4, characterized in that: The elastic member is a spring, a spring sheet or an elastic washer.

6. The radar transport support vibration reduction device according to claim 1, characterized in that: A first guide shaft is disposed on the support platform, and the first sliding block is slidably matched with the first guide shaft.

7. The radar transport support vibration reduction device according to claim 1, characterized in that: The frame is provided with a second guide shaft, and the second sliding block is slidably matched with the second guide shaft.

8. The radar transport support vibration reduction device according to claim 7, characterized in that: There are multiple second guide shafts, the axes of the multiple second guide shafts are arranged in parallel, and the second sliding block is slidably matched with the multiple second guide shafts.

9. The radar transport support vibration reduction device according to claim 1, characterized in that: The second connecting rods are respectively disposed on both sides of the second sliding block.

10. The radar transport support vibration reduction device according to claim 1, characterized in that: The frame comprises a base plate, a mounting plate and a plurality of height adjustment components, the mounting plate is connected to the base plate through the plurality of height adjustment components, and the magnetorheological damper, the second slider and the first connecting rod are all connected to the mounting plate.

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